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-rw-r--r--erts/emulator/beam/atom.names4
-rw-r--r--erts/emulator/beam/beam_bif_load.c101
-rw-r--r--erts/emulator/beam/beam_emu.c13
-rw-r--r--erts/emulator/beam/bif.c1733
-rw-r--r--erts/emulator/beam/bif.h8
-rw-r--r--erts/emulator/beam/bif.tab15
-rw-r--r--erts/emulator/beam/break.c137
-rw-r--r--erts/emulator/beam/dist.c1764
-rw-r--r--erts/emulator/beam/dist.h58
-rw-r--r--erts/emulator/beam/erl_alloc.c23
-rw-r--r--erts/emulator/beam/erl_alloc.types15
-rw-r--r--erts/emulator/beam/erl_bif_info.c916
-rw-r--r--erts/emulator/beam/erl_bif_port.c66
-rw-r--r--erts/emulator/beam/erl_bif_trace.c3
-rw-r--r--erts/emulator/beam/erl_db_util.c4
-rw-r--r--erts/emulator/beam/erl_debug.c36
-rw-r--r--erts/emulator/beam/erl_gc.c247
-rw-r--r--erts/emulator/beam/erl_gc.h4
-rw-r--r--erts/emulator/beam/erl_hl_timer.c40
-rw-r--r--erts/emulator/beam/erl_init.c66
-rw-r--r--erts/emulator/beam/erl_lock_check.c3
-rw-r--r--erts/emulator/beam/erl_message.c327
-rw-r--r--erts/emulator/beam/erl_message.h259
-rw-r--r--erts/emulator/beam/erl_monitor_link.c1341
-rw-r--r--erts/emulator/beam/erl_monitor_link.h2326
-rw-r--r--erts/emulator/beam/erl_monitors.c1073
-rw-r--r--erts/emulator/beam/erl_monitors.h187
-rw-r--r--erts/emulator/beam/erl_nif.c373
-rw-r--r--erts/emulator/beam/erl_node_container_utils.h2
-rw-r--r--erts/emulator/beam/erl_node_tables.c408
-rw-r--r--erts/emulator/beam/erl_node_tables.h52
-rw-r--r--erts/emulator/beam/erl_port.h48
-rw-r--r--erts/emulator/beam/erl_proc_sig_queue.c3772
-rw-r--r--erts/emulator/beam/erl_proc_sig_queue.h665
-rw-r--r--erts/emulator/beam/erl_process.c1906
-rw-r--r--erts/emulator/beam/erl_process.h83
-rw-r--r--erts/emulator/beam/erl_process_dump.c112
-rw-r--r--erts/emulator/beam/erl_process_lock.c98
-rw-r--r--erts/emulator/beam/erl_process_lock.h56
-rw-r--r--erts/emulator/beam/erl_ptab.h6
-rw-r--r--erts/emulator/beam/erl_rbtree.h181
-rw-r--r--erts/emulator/beam/erl_term.h7
-rw-r--r--erts/emulator/beam/erl_time.h8
-rw-r--r--erts/emulator/beam/erl_time_sup.c84
-rw-r--r--erts/emulator/beam/external.h5
-rw-r--r--erts/emulator/beam/global.h13
-rw-r--r--erts/emulator/beam/io.c755
-rw-r--r--erts/emulator/beam/msg_instrs.tab95
48 files changed, 12795 insertions, 6703 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index 38b5f0c5e3..7963386e1d 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1996-2017. All Rights Reserved.
+# Copyright Ericsson AB 1996-2018. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -106,6 +106,7 @@ atom atom
atom atom_used
atom attributes
atom auto_connect
+atom await_exit
atom await_microstate_accounting_modifications
atom await_port_send_result
atom await_proc_exit
@@ -214,7 +215,6 @@ atom dist_data
atom Div='/'
atom div
atom dmonitor_node
-atom dmonitor_p
atom DollarDollar='$$'
atom DollarUnderscore='$_'
atom dollar_endonly
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 87367b44ab..5c76aafae7 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1999-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1999-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -37,6 +37,7 @@
#include "erl_bits.h"
#include "erl_thr_progress.h"
#include "erl_nfunc_sched.h"
+#include "erl_proc_sig_queue.h"
#ifdef HIPE
# include "hipe_bif0.h"
# define IF_HIPE(X) (X)
@@ -65,7 +66,6 @@ static struct {
Process *erts_code_purger = NULL;
-Process *erts_dirty_process_code_checker;
erts_atomic_t erts_copy_literal_area__;
#define ERTS_SET_COPY_LITERAL_AREA(LA) \
erts_atomic_set_nob(&erts_copy_literal_area__, \
@@ -607,7 +607,9 @@ BIF_RETTYPE erts_internal_check_dirty_process_code_2(BIF_ALIST_2)
int reds = 0;
Eterm res;
- if (BIF_P != erts_dirty_process_code_checker)
+ if (BIF_P != erts_dirty_process_signal_handler
+ && BIF_P != erts_dirty_process_signal_handler_high
+ && BIF_P != erts_dirty_process_signal_handler_max)
BIF_ERROR(BIF_P, EXC_NOTSUP);
if (is_not_internal_pid(BIF_ARG_1))
@@ -901,15 +903,59 @@ static void hfrag_literal_copy(Eterm **hpp, ErlOffHeap *ohp,
Eterm *start, Eterm *end,
char *lit_start, Uint lit_size);
+static ERTS_INLINE void
+msg_copy_literal_area(ErtsMessage *msgp, int *redsp,
+ char *literals, Uint lit_bsize)
+{
+ ErlHeapFragment *hfrag, *hf;
+ Uint lit_sz = 0;
+
+ *redsp += 1;
+
+ if (!ERTS_SIG_IS_INTERNAL_MSG(msgp) || !msgp->data.attached)
+ return;
+
+ if (msgp->data.attached == ERTS_MSG_COMBINED_HFRAG)
+ hfrag = &msgp->hfrag;
+ else
+ hfrag = msgp->data.heap_frag;
+
+ for (hf = hfrag; hf; hf = hf->next) {
+ lit_sz += hfrag_literal_size(&hf->mem[0],
+ &hf->mem[hf->used_size],
+ literals, lit_bsize);
+ *redsp += 1;
+ }
+
+ *redsp += lit_sz / 16; /* Better value needed... */
+ if (lit_sz > 0) {
+ ErlHeapFragment *bp = new_message_buffer(lit_sz);
+ Eterm *hp = bp->mem;
+
+ for (hf = hfrag; hf; hf = hf->next) {
+ hfrag_literal_copy(&hp, &bp->off_heap,
+ &hf->mem[0],
+ &hf->mem[hf->used_size],
+ literals, lit_bsize);
+ hfrag = hf;
+ }
+
+ /* link new hfrag last */
+ ASSERT(hfrag->next == NULL);
+ hfrag->next = bp;
+ bp->next = NULL;
+ }
+}
+
Eterm
erts_proc_copy_literal_area(Process *c_p, int *redsp, int fcalls, int gc_allowed)
{
ErtsLiteralArea *la;
- ErtsMessage *msgp;
struct erl_off_heap_header* oh;
char *literals;
Uint lit_bsize;
ErlHeapFragment *hfrag;
+ ErtsMessage *mfp;
la = ERTS_COPY_LITERAL_AREA();
if (!la)
@@ -927,46 +973,13 @@ erts_proc_copy_literal_area(Process *c_p, int *redsp, int fcalls, int gc_allowed
*/
erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ);
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
+ erts_proc_sig_fetch(c_p);
erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
- for (msgp = c_p->msg.first; msgp; msgp = msgp->next) {
- ErlHeapFragment *hf;
- Uint lit_sz = 0;
-
- *redsp += 1;
-
- if (msgp->data.attached == ERTS_MSG_COMBINED_HFRAG)
- hfrag = &msgp->hfrag;
- else if (is_value(ERL_MESSAGE_TERM(msgp)) && msgp->data.heap_frag)
- hfrag = msgp->data.heap_frag;
- else
- continue; /* Content on heap or in external term format... */
-
- for (hf = hfrag; hf; hf = hf->next) {
- lit_sz += hfrag_literal_size(&hf->mem[0], &hf->mem[hf->used_size],
- literals, lit_bsize);
- *redsp += 1;
- }
-
- *redsp += lit_sz / 16; /* Better value needed... */
- if (lit_sz > 0) {
- ErlHeapFragment *bp = new_message_buffer(lit_sz);
- Eterm *hp = bp->mem;
-
- for (hf = hfrag; hf; hf = hf->next) {
- hfrag_literal_copy(&hp, &bp->off_heap,
- &hf->mem[0], &hf->mem[hf->used_size],
- literals, lit_bsize);
- hfrag = hf;
- }
-
- /* link new hfrag last */
- ASSERT(hfrag->next == NULL);
- hfrag->next = bp;
- bp->next = NULL;
- }
- }
+ ERTS_FOREACH_SIG_PRIVQS(c_p, msgp, msg_copy_literal_area(msgp,
+ redsp,
+ literals,
+ lit_bsize));
if (gc_allowed) {
/*
@@ -1041,8 +1054,8 @@ erts_proc_copy_literal_area(Process *c_p, int *redsp, int fcalls, int gc_allowed
* process off heap structure.
* - Check for literals
*/
- for (msgp = c_p->msg_frag; msgp; msgp = msgp->next) {
- hfrag = erts_message_to_heap_frag(msgp);
+ for (mfp = c_p->msg_frag; mfp; mfp = mfp->next) {
+ hfrag = erts_message_to_heap_frag(mfp);
for (; hfrag; hfrag = hfrag->next) {
Eterm *hp, *hp_end;
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index fbd0e38735..fb87be3f17 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -44,6 +44,7 @@
#include "hipe_bif1.h"
#endif
#include "dtrace-wrapper.h"
+#include "erl_proc_sig_queue.h"
/* #define HARDDEBUG 1 */
@@ -1454,7 +1455,7 @@ handle_error(Process* c_p, BeamInstr* pc, Eterm* reg, ErtsCodeMFA *bif_mfa)
reg[3] = c_p->ftrace;
if ((new_pc = next_catch(c_p, reg))) {
c_p->cp = 0; /* To avoid keeping stale references. */
- c_p->msg.saved_last = 0; /* No longer safe to use this position */
+ ERTS_RECV_MARK_CLEAR(c_p); /* No longer safe to use this position */
return new_pc;
}
if (c_p->catches > 0) erts_exit(ERTS_ERROR_EXIT, "Catch not found");
@@ -2419,8 +2420,8 @@ erts_hibernate(Process* c_p, Eterm* reg)
* shrink the heap.
*/
erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- if (!c_p->msg.len) {
+ erts_proc_sig_fetch(c_p);
+ if (!c_p->sig_qs.len) {
erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
c_p->fvalue = NIL;
PROCESS_MAIN_CHK_LOCKS(c_p);
@@ -2428,8 +2429,8 @@ erts_hibernate(Process* c_p, Eterm* reg)
ERTS_VERIFY_UNUSED_TEMP_ALLOC(c_p);
PROCESS_MAIN_CHK_LOCKS(c_p);
erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- if (!c_p->msg.len)
+ erts_proc_sig_fetch(c_p);
+ if (!c_p->sig_qs.len)
erts_atomic32_read_band_relb(&c_p->state, ~ERTS_PSFLG_ACTIVE);
ASSERT(!ERTS_PROC_IS_EXITING(c_p));
}
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index 652b95105f..adea7d007e 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -46,8 +46,10 @@
#include "erl_bif_unique.h"
#include "erl_map.h"
#include "erl_msacc.h"
+#include "erl_proc_sig_queue.h"
Export *erts_await_result;
+static Export await_exit_trap;
static Export* flush_monitor_messages_trap = NULL;
static Export* set_cpu_topology_trap = NULL;
static Export* await_proc_exit_trap = NULL;
@@ -92,83 +94,51 @@ BIF_RETTYPE spawn_3(BIF_ALIST_3)
/* Utility to add a new link between processes p and another internal
* process (rpid). Process p must be the currently executing process.
*/
-static int insert_internal_link(Process* p, Eterm rpid)
-{
- Process *rp;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK;
-
- ASSERT(is_internal_pid(rpid));
-
- if (IS_TRACED(p)
- && (ERTS_TRACE_FLAGS(p) & (F_TRACE_SOL|F_TRACE_SOL1))) {
- rp_locks = ERTS_PROC_LOCKS_ALL;
- }
-
- erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
-
- /* get a pointer to the process struct of the linked process */
- rp = erts_pid2proc_opt(p, ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK,
- rpid, rp_locks,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
-
- if (!rp) {
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- return 0;
- }
-
- if (p != rp) {
- erts_add_link(&ERTS_P_LINKS(p), LINK_PID, rp->common.id);
- erts_add_link(&ERTS_P_LINKS(rp), LINK_PID, p->common.id);
-
- ASSERT(IS_TRACER_VALID(ERTS_TRACER(p)));
-
- if (IS_TRACED(p)) {
- if (ERTS_TRACE_FLAGS(p) & (F_TRACE_SOL|F_TRACE_SOL1)) {
- ERTS_TRACE_FLAGS(rp) |= (ERTS_TRACE_FLAGS(p) & TRACEE_FLAGS);
- erts_tracer_replace(&rp->common, ERTS_TRACER(p));
- if (ERTS_TRACE_FLAGS(p) & F_TRACE_SOL1) { /* maybe override */
- ERTS_TRACE_FLAGS(rp) &= ~(F_TRACE_SOL1 | F_TRACE_SOL);
- ERTS_TRACE_FLAGS(p) &= ~(F_TRACE_SOL1 | F_TRACE_SOL);
- }
- }
- }
- }
- if (IS_TRACED_FL(rp, F_TRACE_PROCS))
- trace_proc(p, p == rp ? rp_locks : ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK,
- rp, am_getting_linked, p->common.id);
-
- if (p == rp)
- erts_proc_unlock(p, rp_locks & ~ERTS_PROC_LOCK_MAIN);
- else {
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- erts_proc_unlock(rp, rp_locks);
- }
-
- return 1;
-}
-
/* create a link to the process */
BIF_RETTYPE link_1(BIF_ALIST_1)
{
- DistEntry *dep;
-
if (IS_TRACED_FL(BIF_P, F_TRACE_PROCS)) {
trace_proc(BIF_P, ERTS_PROC_LOCK_MAIN, BIF_P, am_link, BIF_ARG_1);
}
/* check that the pid or port which is our argument is OK */
if (is_internal_pid(BIF_ARG_1)) {
- if (insert_internal_link(BIF_P, BIF_ARG_1)) {
- BIF_RET(am_true);
- }
- else {
- goto res_no_proc;
- }
+ int created;
+ ErtsLinkData *ldp;
+ ErtsLink *lnk;
+
+ if (BIF_P->common.id == BIF_ARG_1)
+ BIF_RET(am_true);
+
+ if (!erts_proc_lookup(BIF_ARG_1))
+ goto res_no_proc;
+
+ lnk = erts_link_tree_lookup_create(&ERTS_P_LINKS(BIF_P),
+ &created,
+ ERTS_LNK_TYPE_PROC,
+ BIF_P->common.id,
+ BIF_ARG_1);
+ if (!created)
+ BIF_RET(am_true);
+
+ ldp = erts_link_to_data(lnk);
+
+
+ if (erts_proc_sig_send_link(BIF_P, BIF_ARG_1, &ldp->b))
+ BIF_RET(am_true);
+
+ erts_link_tree_delete(&ERTS_P_LINKS(BIF_P), lnk);
+ erts_link_release_both(ldp);
+ goto res_no_proc;
}
if (is_internal_port(BIF_ARG_1)) {
- int send_link_signal = 0;
+ int created;
+ ErtsLinkData *ldp;
+ ErtsLink *lnk;
+ Eterm ref;
+ Eterm *refp;
Port *prt = erts_port_lookup(BIF_ARG_1,
(erts_port_synchronous_ops
? ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP
@@ -177,31 +147,31 @@ BIF_RETTYPE link_1(BIF_ALIST_1)
goto res_no_proc;
}
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
-
- if (erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, BIF_ARG_1) >= 0)
- send_link_signal = 1;
- /* else: already linked */
-
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
+ lnk = erts_link_tree_lookup_create(&ERTS_P_LINKS(BIF_P),
+ &created,
+ ERTS_LNK_TYPE_PORT,
+ BIF_P->common.id,
+ BIF_ARG_1);
+ if (!created)
+ BIF_RET(am_true);
- if (send_link_signal) {
- Eterm ref;
- Eterm *refp = erts_port_synchronous_ops ? &ref : NULL;
+ ldp = erts_link_to_data(lnk);
+ refp = erts_port_synchronous_ops ? &ref : NULL;
- switch (erts_port_link(BIF_P, prt, BIF_P->common.id, refp)) {
- case ERTS_PORT_OP_DROPPED:
- case ERTS_PORT_OP_BADARG:
- goto res_no_proc;
- case ERTS_PORT_OP_SCHEDULED:
- if (refp) {
- ASSERT(is_internal_ordinary_ref(ref));
- BIF_TRAP3(await_port_send_result_trap, BIF_P, ref, am_true, am_true);
- }
- default:
- break;
- }
- }
+ switch (erts_port_link(BIF_P, prt, &ldp->b, refp)) {
+ case ERTS_PORT_OP_DROPPED:
+ case ERTS_PORT_OP_BADARG:
+ erts_link_tree_delete(&ERTS_P_LINKS(BIF_P), lnk);
+ erts_link_release_both(ldp);
+ goto res_no_proc;
+ case ERTS_PORT_OP_SCHEDULED:
+ if (refp) {
+ ASSERT(is_internal_ordinary_ref(ref));
+ BIF_TRAP3(await_port_send_result_trap, BIF_P, ref, am_true, am_true);
+ }
+ default:
+ break;
+ }
BIF_RET(am_true);
}
else if (is_external_port(BIF_ARG_1)
@@ -210,317 +180,203 @@ BIF_RETTYPE link_1(BIF_ALIST_1)
}
if (is_external_pid(BIF_ARG_1)) {
+ ErtsLinkData *ldp;
+ int created;
+ DistEntry *dep;
+ ErtsLink *lnk;
+ int code;
+ ErtsDSigData dsd;
+
+ dep = external_pid_dist_entry(BIF_ARG_1);
+ if (dep == erts_this_dist_entry)
+ goto res_no_proc;
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
-
- /* We may earn time by checking first that we're not linked already */
- if (erts_lookup_link(ERTS_P_LINKS(BIF_P), BIF_ARG_1) != NULL) {
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
- BIF_RET(am_true);
- }
- else {
- ErtsLink *lnk;
- int code;
- ErtsDSigData dsd;
- dep = external_pid_dist_entry(BIF_ARG_1);
- if (dep == erts_this_dist_entry) {
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
- goto res_no_proc;
- }
-
- code = erts_dsig_prepare(&dsd, dep, BIF_P,
- (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
- ERTS_DSP_RLOCK, 0, 1);
- switch (code) {
- case ERTS_DSIG_PREP_NOT_ALIVE:
- case ERTS_DSIG_PREP_NOT_CONNECTED: {
- ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK;
- erts_aint32_t state;
- erts_proc_lock(BIF_P, (ERTS_PROC_LOCKS_ALL & ~locks));
- locks = ERTS_PROC_LOCKS_ALL;
- erts_send_exit_signal(BIF_P, BIF_ARG_1, BIF_P, &locks,
- am_noconnection, NIL, NULL, 0);
- erts_proc_unlock(BIF_P, locks & ERTS_PROC_LOCKS_ALL_MINOR);
-
- /*
- * Copy-paste from old dist_exit_3, not sure if we really
- * need erts_handle_pending_exit when exit_2 does not.
- */
- state = erts_atomic32_read_acqb(&BIF_P->state);
- if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
- if (state & ERTS_PSFLG_PENDING_EXIT)
- erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
- ERTS_BIF_EXITED(BIF_P);
- }
- BIF_RET(am_true);
- }
- case ERTS_DSIG_PREP_PENDING:
- case ERTS_DSIG_PREP_CONNECTED:
- /*
- * We have (pending) connection.
- * Setup link and enqueue link signal.
- */
- erts_de_links_lock(dep);
-
- erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, BIF_ARG_1);
- lnk = erts_add_or_lookup_link(&(dep->nlinks),
- LINK_PID,
- BIF_P->common.id);
- ASSERT(lnk != NULL);
- erts_add_link(&ERTS_LINK_ROOT(lnk), LINK_PID, BIF_ARG_1);
-
- erts_de_links_unlock(dep);
- erts_de_runlock(dep);
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
-
- code = erts_dsig_send_link(&dsd, BIF_P->common.id, BIF_ARG_1);
- if (code == ERTS_DSIG_SEND_YIELD)
- ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
- BIF_RET(am_true);
- default:
- ERTS_ASSERT(! "Invalid dsig prepare result");
- }
- }
+ lnk = erts_link_tree_lookup_create(&ERTS_P_LINKS(BIF_P),
+ &created,
+ ERTS_LNK_TYPE_DIST_PROC,
+ BIF_P->common.id,
+ BIF_ARG_1);
+
+ if (!created)
+ BIF_RET(am_true); /* Already present... */
+
+ ldp = erts_link_to_data(lnk);
+
+ code = erts_dsig_prepare(&dsd, dep, BIF_P,
+ ERTS_PROC_LOCK_MAIN,
+ ERTS_DSP_RLOCK, 0, 1);
+ switch (code) {
+ case ERTS_DSIG_PREP_NOT_ALIVE:
+ case ERTS_DSIG_PREP_NOT_CONNECTED:
+ erts_link_set_dead_dist(&ldp->b, dep->sysname);
+ erts_proc_sig_send_link_exit(NULL, BIF_ARG_1, &ldp->b,
+ am_noconnection, NIL);
+ BIF_RET(am_true);
+
+ case ERTS_DSIG_PREP_PENDING:
+ case ERTS_DSIG_PREP_CONNECTED: {
+ /*
+ * We have (pending) connection.
+ * Setup link and enqueue link signal.
+ */
+#ifdef DEBUG
+ int inserted =
+#endif
+ erts_link_dist_insert(&ldp->b, dep->mld);
+ ASSERT(inserted);
+ erts_de_runlock(dep);
+
+ code = erts_dsig_send_link(&dsd, BIF_P->common.id, BIF_ARG_1);
+ if (code == ERTS_DSIG_SEND_YIELD)
+ ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
+ BIF_RET(am_true);
+ break;
+ }
+ default:
+ ERTS_ASSERT(! "Invalid dsig prepare result");
+ }
}
BIF_ERROR(BIF_P, BADARG);
-res_no_proc: {
- erts_aint32_t state = erts_atomic32_read_nob(&BIF_P->state);
- if (state & ERTS_PSFLG_TRAP_EXIT) {
- ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN;
- erts_deliver_exit_message(BIF_ARG_1, BIF_P, &locks, am_noproc, NIL);
- erts_proc_unlock(BIF_P, ~ERTS_PROC_LOCK_MAIN & locks);
- BIF_RET(am_true);
- }
- else
- BIF_ERROR(BIF_P, EXC_NOPROC);
+res_no_proc:
+ if (BIF_P->flags & F_TRAP_EXIT) {
+ ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN;
+ erts_deliver_exit_message(BIF_ARG_1, BIF_P, &locks, am_noproc, NIL);
+ erts_proc_unlock(BIF_P, ~ERTS_PROC_LOCK_MAIN & locks);
+ BIF_RET(am_true);
+ }
+ else {
+ /*
+ * This behaviour is *really* sad but link/1 has
+ * behaved like this for ages (and this behaviour is
+ * actually documented)... :'-(
+ *
+ * The proper behavior would have been to
+ * send calling process an exit signal..
+ */
+ BIF_ERROR(BIF_P, EXC_NOPROC);
}
}
-/* This function is allowed to return range of values handled by demonitor/1-2
- * Namely: atoms true, false, yield, internal_error, badarg or THE_NON_VALUE
- */
static Eterm
-remote_demonitor(Process *c_p, DistEntry *dep, Eterm ref, Eterm to)
+demonitor(Process *c_p, Eterm ref, Eterm *multip)
{
- ErtsDSigData dsd;
- ErtsMonitor *dmon;
- ErtsMonitor *mon;
- int code;
- Eterm res = am_false;
-
- ERTS_LC_ASSERT((ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK)
- == erts_proc_lc_my_proc_locks(c_p));
+ ErtsMonitor *mon; /* The monitor entry to delete */
- code = erts_dsig_prepare(&dsd, dep, c_p, ERTS_PROC_LOCK_MAIN,
- ERTS_DSP_RLOCK, 0, 0);
- switch (code) {
- case ERTS_DSIG_PREP_NOT_ALIVE:
- case ERTS_DSIG_PREP_NOT_CONNECTED:
- /*
- * In the smp case this is possible if the node goes
- * down just before the call to demonitor.
- */
- if (dep) {
- erts_de_links_lock(dep);
- dmon = erts_remove_monitor(&dep->monitors, ref);
- erts_de_links_unlock(dep);
- if (dmon)
- erts_destroy_monitor(dmon);
- }
- mon = erts_remove_monitor(&ERTS_P_MONITORS(c_p), ref);
- erts_proc_unlock(c_p, ERTS_PROC_LOCK_LINK);
-
- res = am_true;
- break;
-
- case ERTS_DSIG_PREP_PENDING:
- case ERTS_DSIG_PREP_CONNECTED:
-
- erts_de_links_lock(dep);
- mon = erts_remove_monitor(&ERTS_P_MONITORS(c_p), ref);
- dmon = erts_remove_monitor(&dep->monitors, ref);
- erts_de_links_unlock(dep);
- erts_de_runlock(dep);
- erts_proc_unlock(c_p, ERTS_PROC_LOCK_LINK);
-
- if (!dmon) {
- /*
- * This is possible when smp support is enabled.
- * 'DOWN' message just arrived.
- */
- res = am_true;
- }
- else {
- /*
- * Soft (no force) send, use ->data in dist slot
- * monitor list since in case of monitor name
- * the atom is stored there. Yield if necessary.
- */
- code = erts_dsig_send_demonitor(&dsd,
- c_p->common.id,
- (mon->name != NIL
- ? mon->name
- : mon->u.pid),
- ref,
- 0);
- res = (code == ERTS_DSIG_SEND_YIELD ? am_yield : am_true);
- erts_destroy_monitor(dmon);
- }
- break;
- default:
- ERTS_ASSERT(! "Invalid dsig prepare result");
- }
-
-
- /*
- * We aren't allowed to destroy 'mon' until now, since 'to'
- * may refer into 'mon' (external pid).
- */
- ASSERT(mon); /* Since link lock wasn't released between
- lookup and remove */
- erts_destroy_monitor(mon);
-
- ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN == erts_proc_lc_my_proc_locks(c_p));
- return res;
-}
+ *multip = am_false;
-static ERTS_INLINE void
-demonitor_local_process(Process *c_p, Eterm ref, Eterm to, Eterm *res)
-{
- Process *rp = erts_pid2proc_opt(c_p,
- ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK,
- to,
- ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- ErtsMonitor *mon = erts_remove_monitor(&ERTS_P_MONITORS(c_p), ref);
+ if (is_not_internal_ref(ref)) {
+ if (is_external_ref(ref)
+ && (erts_this_dist_entry
+ == external_ref_dist_entry(ref))) {
+ return am_false;
+ }
+ return am_badarg; /* Not monitored by this monitor's ref */
+ }
- if (!mon)
- *res = am_false;
- else
- {
- *res = am_true;
- erts_destroy_monitor(mon);
- }
- if (rp) {
- ErtsMonitor *rmon;
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), ref);
- if (rp != c_p)
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (rmon != NULL)
- erts_destroy_monitor(rmon);
- }
- else {
- ERTS_ASSERT_IS_NOT_EXITING(c_p);
- }
-}
+ mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p), ref);
+ if (!mon)
+ return am_false;
-static ERTS_INLINE BIF_RETTYPE
-demonitor_local_port(Process *origin, Eterm ref, Eterm target)
-{
- BIF_RETTYPE res = am_false;
- Port *port = erts_port_lookup_raw(target);
+ if (!erts_monitor_is_origin(mon))
+ return am_badarg;
- if (!port) {
- BIF_ERROR(origin, BADARG);
- }
- erts_proc_unlock(origin, ERTS_PROC_LOCK_LINK);
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p), mon);
- if (port) {
- Eterm trap_ref;
- switch (erts_port_demonitor(origin, ERTS_PORT_DEMONITOR_NORMAL,
- port, ref, &trap_ref)) {
- case ERTS_PORT_OP_DROPPED:
- case ERTS_PORT_OP_BADARG:
- break;
- case ERTS_PORT_OP_SCHEDULED:
- BIF_TRAP3(await_port_send_result_trap, origin, trap_ref,
- am_busy_port, am_true);
- /* the busy_port atom will never be returned, because it cannot be
- * returned from erts_port_(de)monitor, but just in case if in future
- * internal API changes - you may see this atom */
- default:
- break;
- }
- }
- else {
- ERTS_ASSERT_IS_NOT_EXITING(origin);
- }
- BIF_RET(res);
-}
+ switch (mon->type) {
-/* Can return atom true, false, yield, internal_error, badarg or
- * THE_NON_VALUE if error occurred or trap has been set up
- */
-static
-BIF_RETTYPE demonitor(Process *c_p, Eterm ref, Eterm *multip)
-{
- ErtsMonitor *mon = NULL; /* The monitor entry to delete */
- Eterm to = NIL; /* Monitor link traget */
- DistEntry *dep = NULL; /* Target's distribution entry */
- BIF_RETTYPE res = am_false;
- int unlock_link = 1;
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ *multip = am_true;
+ erts_demonitor_time_offset(mon);
+ return am_true;
+
+ case ERTS_MON_TYPE_PORT: {
+ Port *prt;
+ ASSERT(is_internal_port(mon->other.item));
+ prt = erts_port_lookup(mon->other.item, ERTS_PORT_SFLGS_DEAD);
+ if (!prt || erts_port_demonitor(c_p, prt, mon) == ERTS_PORT_OP_DROPPED)
+ erts_monitor_release(mon);
+ return am_true;
+ }
- erts_proc_lock(c_p, ERTS_PROC_LOCK_LINK);
+ case ERTS_MON_TYPE_PROC:
+ erts_proc_sig_send_demonitor(mon);
+ return am_true;
- if (is_not_internal_ref(ref)) {
- res = am_badarg;
- goto done; /* Cannot be this monitor's ref */
- }
+ case ERTS_MON_TYPE_DIST_PROC: {
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ Eterm to = mon->other.item;
+ DistEntry *dep;
+ int code = ERTS_DSIG_SEND_OK;
+ int deleted;
+ ErtsDSigData dsd;
- mon = erts_lookup_monitor(ERTS_P_MONITORS(c_p), ref);
- if (!mon) {
- goto done;
- }
+ ASSERT(is_external_pid(to) || is_node_name_atom(to));
- switch (mon->type) {
- case MON_TIME_OFFSET:
- *multip = am_true;
- erts_demonitor_time_offset(ref);
- res = am_true;
- break;
- case MON_ORIGIN:
- to = mon->u.pid;
- *multip = am_false;
- if (is_atom(to)) {
+ if (is_external_pid(to))
+ dep = external_pid_dist_entry(to);
+ else {
/* Monitoring a name at node to */
- ASSERT(is_node_name_atom(to));
dep = erts_sysname_to_connected_dist_entry(to);
ASSERT(dep != erts_this_dist_entry);
- } else if (is_port(to)) {
- if (port_dist_entry(to) != erts_this_dist_entry) {
- goto badarg;
+ if (!dep) {
+ erts_monitor_release(mon);
+ return am_false;
}
- res = demonitor_local_port(c_p, ref, to);
- unlock_link = 0;
- goto done;
- } else {
- ASSERT(is_pid(to));
- dep = pid_dist_entry(to);
}
- if (dep != erts_this_dist_entry) {
- res = remote_demonitor(c_p, dep, ref, to);
- /* remote_demonitor() unlocks link lock on c_p */
- unlock_link = 0;
+
+ code = erts_dsig_prepare(&dsd, dep, c_p, ERTS_PROC_LOCK_MAIN,
+ ERTS_DSP_RLOCK, 0, 0);
+
+ deleted = erts_monitor_dist_delete(&mdp->target);
+
+ switch (code) {
+ case ERTS_DSIG_PREP_NOT_ALIVE:
+ case ERTS_DSIG_PREP_NOT_CONNECTED:
+ /*
+ * In the smp case this is possible if the node goes
+ * down just before the call to demonitor.
+ */
+ break;
+
+ case ERTS_DSIG_PREP_PENDING:
+ case ERTS_DSIG_PREP_CONNECTED: {
+ Eterm watched;
+
+ erts_de_runlock(dep);
+
+ if (mon->flags & ERTS_ML_FLG_NAME)
+ watched = ((ErtsMonitorDataExtended *) mdp)->u.name;
+ else
+ watched = to;
+
+ /*
+ * Soft (no force) send, use ->data in dist slot
+ * monitor list since in case of monitor name
+ * the atom is stored there. Yield if necessary.
+ */
+ code = erts_dsig_send_demonitor(&dsd, c_p->common.id,
+ watched, mdp->ref, 0);
+ break;
}
- else { /* Local monitor */
- demonitor_local_process(c_p, ref, to, &res);
+
+ default:
+ ERTS_INTERNAL_ERROR("invalid result from erts_dsig_prepare()");
+ break;
}
- break;
- default /* case */ :
-badarg:
- res = am_badarg; /* will be converted to error by caller */
- *multip = am_false;
- break;
- }
-done:
- if (unlock_link)
- erts_proc_unlock(c_p, ERTS_PROC_LOCK_LINK);
+ if (deleted)
+ erts_monitor_release(&mdp->target);
- ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN == erts_proc_lc_my_proc_locks(c_p));
- BIF_RET(res);
+ erts_monitor_release(mon);
+ return code == ERTS_DSIG_SEND_YIELD ? am_yield : am_true;
+ }
+
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected monitor type");
+ return am_false;
+ }
}
BIF_RETTYPE demonitor_1(BIF_ALIST_1)
@@ -528,25 +384,23 @@ BIF_RETTYPE demonitor_1(BIF_ALIST_1)
Eterm multi;
switch (demonitor(BIF_P, BIF_ARG_1, &multi)) {
case am_false:
- case am_true: BIF_RET(am_true);
- case THE_NON_VALUE: BIF_RET(THE_NON_VALUE);
- case am_yield: ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
- case am_badarg: BIF_ERROR(BIF_P, BADARG);
-
- case am_internal_error:
+ case am_true:
+ BIF_RET(am_true);
+ case am_yield:
+ ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
+ case am_badarg:
default:
- ASSERT(! "demonitor(): internal error");
- BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
+ BIF_ERROR(BIF_P, BADARG);
}
}
BIF_RETTYPE demonitor_2(BIF_ALIST_2)
{
- BIF_RETTYPE res = am_true;
- Eterm multi = am_false;
- int info = 0;
- int flush = 0;
- Eterm list = BIF_ARG_2;
+ BIF_RETTYPE res;
+ Eterm multi = am_false;
+ int info = 0;
+ int flush = 0;
+ Eterm list = BIF_ARG_2;
while (is_list(list)) {
Eterm* consp = list_val(list);
@@ -566,10 +420,9 @@ BIF_RETTYPE demonitor_2(BIF_ALIST_2)
if (is_not_nil(list))
goto badarg;
+ res = am_true;
switch (demonitor(BIF_P, BIF_ARG_1, &multi)) {
- case THE_NON_VALUE:
- /* If other error occurred or trap has been set up - pass through */
- BIF_RET(THE_NON_VALUE);
+
case am_false:
if (info)
res = am_false;
@@ -578,20 +431,29 @@ flush_messages:
BIF_TRAP3(flush_monitor_messages_trap, BIF_P,
BIF_ARG_1, multi, res);
}
+ /* Fall through... */
+
case am_true:
if (multi == am_true && flush)
goto flush_messages;
BIF_RET(res);
+
case am_yield:
- ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
+ /* return true after yield... */
+ if (flush) {
+ ERTS_VBUMP_ALL_REDS(BIF_P);
+ goto flush_messages;
+ }
+ ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
+
case am_badarg:
-badarg:
- BIF_ERROR(BIF_P, BADARG);
- case am_internal_error:
default:
- ASSERT(! "demonitor(): internal error");
- BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
+ break;
+
}
+
+badarg:
+ BIF_ERROR(BIF_P, BADARG);
}
/* Type must be atomic object! */
@@ -631,292 +493,212 @@ erts_queue_monitor_message(Process *p,
erts_queue_message(p, *p_locksp, msgp, tup, am_system);
}
-static Eterm
-local_pid_monitor(Process *p, Eterm target, Eterm mon_ref, int boolean)
+BIF_RETTYPE monitor_2(BIF_ALIST_2)
{
- Eterm ret = mon_ref;
- Process *rp;
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK;
-
- if (target == p->common.id) {
- return ret;
- }
+ Eterm target = BIF_ARG_2;
+ Eterm tmp_heap[3];
+ Eterm ref, id, name;
+ ErtsMonitorData *mdp;
+
+ if (BIF_ARG_1 == am_process) {
+ DistEntry *dep;
+ int byname;
+
+ if (is_internal_pid(target)) {
+ name = NIL;
+ id = target;
+
+ local_process:
+
+ ref = erts_make_ref(BIF_P);
+ if (id != BIF_P->common.id) {
+ mdp = erts_monitor_create(ERTS_MON_TYPE_PROC,
+ ref, BIF_P->common.id,
+ id, name);
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(BIF_P),
+ &mdp->origin);
+
+ if (!erts_proc_sig_send_monitor(&mdp->target, id))
+ erts_proc_sig_send_monitor_down(&mdp->target,
+ am_noproc);
+ }
+ BIF_RET(ref);
+ }
- erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
- rp = erts_pid2proc_opt(p, p_locks,
- target, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- if (!rp) {
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- p_locks &= ~ERTS_PROC_LOCK_LINK;
- if (boolean)
- ret = am_false;
- else
- erts_queue_monitor_message(p, &p_locks,
- mon_ref, am_process, target, am_noproc);
- }
- else {
- ASSERT(rp != p);
+ if (is_atom(target)) {
+ local_named_process:
+ name = target;
+ id = erts_whereis_name_to_id(BIF_P, target);
+ if (is_internal_pid(id))
+ goto local_process;
+ target = TUPLE2(&tmp_heap[0], name,
+ erts_this_dist_entry->sysname);
+ goto noproc;
+ }
- if (boolean)
- ret = am_true;
+ if (is_external_pid(target)) {
+ ErtsDSigData dsd;
+ int code;
+
+ dep = external_pid_dist_entry(target);
+ if (dep == erts_this_dist_entry)
+ goto noproc;
+
+ id = target;
+ name = NIL;
+ byname = 0;
+
+ remote_process:
+
+ ref = erts_make_ref(BIF_P);
+ mdp = erts_monitor_create(ERTS_MON_TYPE_DIST_PROC, ref,
+ BIF_P->common.id, id, name);
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(BIF_P), &mdp->origin);
+
+ code = erts_dsig_prepare(&dsd, dep,
+ BIF_P, ERTS_PROC_LOCK_MAIN,
+ ERTS_DSP_RLOCK, 0, 1);
+ switch (code) {
+ case ERTS_DSIG_PREP_NOT_ALIVE:
+ case ERTS_DSIG_PREP_NOT_CONNECTED:
+ erts_monitor_set_dead_dist(&mdp->target, dep->sysname);
+ erts_proc_sig_send_monitor_down(&mdp->target, am_noconnection);
+ code = ERTS_DSIG_SEND_OK;
+ break;
- erts_add_monitor(&ERTS_P_MONITORS(p), MON_ORIGIN, mon_ref, target, NIL);
- erts_add_monitor(&ERTS_P_MONITORS(rp), MON_TARGET, mon_ref, p->common.id, NIL);
+ case ERTS_DSIG_PREP_PENDING:
+ case ERTS_DSIG_PREP_CONNECTED: {
+#ifdef DEBUG
+ int inserted =
+#endif
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- }
+ erts_monitor_dist_insert(&mdp->target, dep->mld);
+ ASSERT(inserted);
+ erts_de_runlock(dep);
- erts_proc_unlock(p, p_locks & ~ERTS_PROC_LOCK_MAIN);
+ code = erts_dsig_send_monitor(&dsd, BIF_P->common.id, target, ref);
+ break;
+ }
- return ret;
-}
+ default:
+ ERTS_ASSERT(! "Invalid dsig prepare result");
+ code = ERTS_DSIG_SEND_OK;
+ break;
+ }
-static BIF_RETTYPE
-local_port_monitor(Process *origin, Eterm target)
-{
- BIF_RETTYPE ref = erts_make_ref(origin);
- Port *port = erts_sig_lookup_port(origin, target);
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_MAIN;
+ if (byname)
+ erts_deref_dist_entry(dep);
- if (!port) {
-res_no_proc:
- /* Send the DOWN message immediately. Ref is made on the fly because
- * caller has never seen it yet. */
- erts_queue_monitor_message(origin, &p_locks, ref,
- am_port, target, am_noproc);
- }
- else {
- switch (erts_port_monitor(origin, port, target, &ref)) {
- case ERTS_PORT_OP_DROPPED:
- case ERTS_PORT_OP_BADARG:
- goto res_no_proc;
- case ERTS_PORT_OP_SCHEDULED:
- BIF_TRAP3(await_port_send_result_trap, origin, ref,
- am_busy_port, ref);
- /* the busy_port atom will never be returned, because it cannot be
- * returned from erts_port_monitor, but just in case if in future
- * internal API changes - you may see this atom */
- default:
- break;
+ if (code == ERTS_DSIG_SEND_YIELD)
+ ERTS_BIF_YIELD_RETURN(BIF_P, ref);
+ BIF_RET(ref);
}
- }
- erts_proc_unlock(origin, p_locks & ~ERTS_PROC_LOCK_MAIN);
- BIF_RET(ref);
-}
-/* Type = process | port :: atom(), 1st argument passed to erlang:monitor/2
- */
-static BIF_RETTYPE
-local_name_monitor(Process *self, Eterm type, Eterm target_name)
-{
- BIF_RETTYPE ret = erts_make_ref(self);
+ if (is_tuple(target)) {
+ Eterm *tpl = tuple_val(target);
+ if (arityval(tpl[0]) != 2)
+ goto badarg;
+ if (is_not_atom(tpl[1]) || is_not_atom(tpl[2]))
+ goto badarg;
+ if (!erts_is_alive && tpl[2] != am_Noname)
+ goto badarg;
+ target = tpl[1];
+ dep = erts_find_or_insert_dist_entry(tpl[2]);
+ if (dep == erts_this_dist_entry) {
+ erts_deref_dist_entry(dep);
+ goto local_named_process;
+ }
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK;
- Process *proc = NULL;
- Port *port = NULL;
+ id = dep->sysname;
+ name = target;
+ byname = 1;
+ goto remote_process;
+ }
- erts_proc_lock(self, ERTS_PROC_LOCK_LINK);
+ /* badarg... */
+ }
+ else if (BIF_ARG_1 == am_port) {
+
+ if (is_internal_port(target)) {
+ Port *prt;
+ name = NIL;
+ id = target;
+ local_port:
+ ref = erts_make_ref(BIF_P);
+ mdp = erts_monitor_create(ERTS_MON_TYPE_PORT, ref,
+ BIF_P->common.id, id, name);
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(BIF_P), &mdp->origin);
+ prt = erts_port_lookup(id, ERTS_PORT_SFLGS_INVALID_LOOKUP);
+ if (!prt || erts_port_monitor(BIF_P, prt, &mdp->target) == ERTS_PORT_OP_DROPPED)
+ erts_proc_sig_send_monitor_down(&mdp->target, am_noproc);
+ BIF_RET(ref);
+ }
- erts_whereis_name(self, p_locks, target_name,
- &proc, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X,
- &port, 0);
+ if (is_atom(target)) {
+ local_named_port:
+ name = target;
+ id = erts_whereis_name_to_id(BIF_P, target);
+ if (is_internal_port(id))
+ goto local_port;
+ target = TUPLE2(&tmp_heap[0], name,
+ erts_this_dist_entry->sysname);
+ goto noproc;
+ }
- /* If the name is not registered,
- * or if we asked for proc and got a port,
- * or if we asked for port and got a proc,
- * we just send the 'DOWN' message.
- */
- if ((!proc && !port) ||
- (type == am_process && port) ||
- (type == am_port && proc)) {
- DeclareTmpHeap(lhp,3,self);
- Eterm item;
- UseTmpHeap(3,self);
-
- erts_proc_unlock(self, ERTS_PROC_LOCK_LINK);
- p_locks &= ~ERTS_PROC_LOCK_LINK;
-
- item = TUPLE2(lhp, target_name, erts_this_dist_entry->sysname);
- erts_queue_monitor_message(self, &p_locks,
- ret,
- type, /* = process|port :: atom() */
- item, am_noproc);
- UnUseTmpHeap(3,self);
- }
- else if (port) {
- erts_proc_unlock(self, p_locks & ~ERTS_PROC_LOCK_MAIN);
- p_locks &= ~ERTS_PROC_LOCK_MAIN;
-
- switch (erts_port_monitor(self, port, target_name, &ret)) {
- case ERTS_PORT_OP_DONE:
- return ret;
- case ERTS_PORT_OP_SCHEDULED: { /* Scheduled a signal */
- ASSERT(is_internal_ordinary_ref(ret));
- BIF_TRAP3(await_port_send_result_trap, self,
- ret, am_true, ret);
- /* bif_trap returns */
- } break;
- default:
+ if (is_external_port(target)) {
+ if (erts_this_dist_entry == external_port_dist_entry(target))
+ goto noproc;
goto badarg;
}
- }
- else if (proc != self) {
- erts_add_monitor(&ERTS_P_MONITORS(self), MON_ORIGIN, ret,
- proc->common.id, target_name);
- erts_add_monitor(&ERTS_P_MONITORS(proc), MON_TARGET, ret,
- self->common.id, target_name);
- erts_proc_unlock(proc, ERTS_PROC_LOCK_LINK);
- }
-
- if (p_locks) {
- erts_proc_unlock(self, p_locks & ~ERTS_PROC_LOCK_MAIN);
- }
- BIF_RET(ret);
-badarg:
- if (p_locks) {
- erts_proc_unlock(self, p_locks & ~ERTS_PROC_LOCK_MAIN);
- }
- BIF_ERROR(self, BADARG);
-}
-
-static BIF_RETTYPE
-remote_monitor(Process *p, Eterm bifarg1, Eterm bifarg2,
- DistEntry *dep, Eterm target, int byname)
-{
- ErtsDSigData dsd;
- BIF_RETTYPE ret;
- int code;
- ASSERT(dep);
- erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
- code = erts_dsig_prepare(&dsd, dep,
- p, (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
- ERTS_DSP_RLOCK, 0, 1);
- switch (code) {
- case ERTS_DSIG_PREP_NOT_ALIVE:
- case ERTS_DSIG_PREP_NOT_CONNECTED:
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- ERTS_BIF_PREP_TRAP2(ret, dmonitor_p_trap, p, bifarg1, bifarg2);
- break;
- case ERTS_DSIG_PREP_PENDING:
- case ERTS_DSIG_PREP_CONNECTED:
- {
- Eterm p_trgt, p_name, d_name, mon_ref;
+ if (is_tuple(target)) {
+ Eterm *tpl = tuple_val(target);
+ if (arityval(tpl[0]) != 2)
+ goto badarg;
+ if (is_not_atom(tpl[1]) || is_not_atom(tpl[2]))
+ goto badarg;
+ if (tpl[2] == erts_this_dist_entry->sysname) {
+ target = tpl[1];
+ goto local_named_port;
+ }
+ }
- mon_ref = erts_make_ref(p);
+ /* badarg... */
+ }
+ else if (BIF_ARG_1 == am_time_offset) {
- if (byname) {
- p_trgt = dep->sysname;
- p_name = target;
- d_name = target;
- }
- else {
- p_trgt = target;
- p_name = NIL;
- d_name = NIL;
- }
+ if (target != am_clock_service)
+ goto badarg;
+ ref = erts_make_ref(BIF_P);
+ mdp = erts_monitor_create(ERTS_MON_TYPE_TIME_OFFSET,
+ ref, BIF_P->common.id,
+ am_clock_service, NIL);
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(BIF_P), &mdp->origin);
- erts_de_links_lock(dep);
+ erts_monitor_time_offset(&mdp->target);
- erts_add_monitor(&ERTS_P_MONITORS(p), MON_ORIGIN, mon_ref, p_trgt,
- p_name);
- erts_add_monitor(&(dep->monitors), MON_TARGET, mon_ref, p->common.id,
- d_name);
+ BIF_RET(ref);
+ }
- erts_de_links_unlock(dep);
- erts_de_runlock(dep);
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+badarg:
- code = erts_dsig_send_monitor(&dsd, p->common.id, target, mon_ref);
- if (code == ERTS_DSIG_SEND_YIELD)
- ERTS_BIF_PREP_YIELD_RETURN(ret, p, mon_ref);
- else
- ERTS_BIF_PREP_RET(ret, mon_ref);
- }
- break;
- default:
- ERTS_ASSERT(! "Invalid dsig prepare result");
- }
+ BIF_ERROR(BIF_P, BADARG);
- BIF_RET(ret);
-}
-
-BIF_RETTYPE monitor_2(BIF_ALIST_2)
-{
- Eterm target = BIF_ARG_2;
- BIF_RETTYPE ret;
- DistEntry *dep = NULL;
+noproc: {
+ ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN;
- /* Only process monitors are implemented */
- switch (BIF_ARG_1) {
- case am_time_offset: {
- Eterm ref;
- if (BIF_ARG_2 != am_clock_service) {
- goto badarg;
- }
- ref = erts_make_ref(BIF_P);
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
- erts_add_monitor(&ERTS_P_MONITORS(BIF_P), MON_TIME_OFFSET,
- ref, am_clock_service, NIL);
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
- erts_monitor_time_offset(BIF_P->common.id, ref);
- BIF_RET(ref);
- }
- case am_process:
- case am_port:
- break;
- default:
- goto badarg;
- }
+ ref = erts_make_ref(BIF_P);
+ erts_queue_monitor_message(BIF_P,
+ &locks,
+ ref,
+ BIF_ARG_1,
+ target,
+ am_noproc);
+ if (locks != ERTS_PROC_LOCK_MAIN)
+ erts_proc_unlock(BIF_P, locks & ~ERTS_PROC_LOCK_MAIN);
- if (is_internal_pid(target) && BIF_ARG_1 == am_process) {
-local_pid:
- ret = local_pid_monitor(BIF_P, target, erts_make_ref(BIF_P), 0);
- } else if (is_external_pid(target) && BIF_ARG_1 == am_process) {
- dep = external_pid_dist_entry(target);
- if (dep == erts_this_dist_entry)
- goto local_pid;
- ret = remote_monitor(BIF_P, BIF_ARG_1, BIF_ARG_2, dep, target, 0);
- } else if (is_internal_port(target) && BIF_ARG_1 == am_port) {
-local_port:
- ret = local_port_monitor(BIF_P, target);
- } else if (is_external_port(target) && BIF_ARG_1 == am_port) {
- dep = external_port_dist_entry(target);
- if (dep == erts_this_dist_entry) {
- goto local_port;
- }
- goto badarg; /* No want remote port */
- } else if (is_atom(target)) {
- ret = local_name_monitor(BIF_P, BIF_ARG_1, target);
- } else if (is_tuple(target)) {
- Eterm *tp = tuple_val(target);
- Eterm remote_node;
- Eterm name;
- if (arityval(*tp) != 2) {
- goto badarg;
- }
- remote_node = tp[2];
- name = tp[1];
- if (!is_atom(remote_node) || !is_atom(name)) {
- goto badarg;
- }
- if (!erts_is_alive && remote_node != am_Noname) {
- goto badarg; /* Remote monitor from (this) undistributed node */
- }
- dep = erts_find_or_insert_dist_entry(remote_node);
- if (dep == erts_this_dist_entry) {
- ret = local_name_monitor(BIF_P, BIF_ARG_1, name);
- } else {
- ret = remote_monitor(BIF_P, BIF_ARG_1, BIF_ARG_2, dep, name, 1);
- }
- erts_deref_dist_entry(dep);
- } else {
-badarg:
- ERTS_BIF_PREP_ERROR(ret, BIF_P, BADARG);
+ BIF_RET(ref);
}
- return ret;
}
/**********************************************************************/
@@ -1089,91 +871,74 @@ BIF_RETTYPE spawn_opt_1(BIF_ALIST_1)
/* remove a link from a process */
BIF_RETTYPE unlink_1(BIF_ALIST_1)
{
- Process *rp;
- DistEntry *dep;
- ErtsLink *l = NULL, *rl = NULL;
- ErtsProcLocks cp_locks = ERTS_PROC_LOCK_MAIN;
-
- /*
- * SMP specific note concerning incoming exit signals:
- * We have to have at least the status lock during removal of
- * the link half on current process, and check for and handle
- * a present pending exit while the status lock is held. This
- * in order to ensure that we wont be exited by a link after
- * it has been removed.
- *
- * (We also have to have the link lock, of course, in order to
- * be allowed to remove the link...)
- */
-
if (IS_TRACED_FL(BIF_P, F_TRACE_PROCS)) {
- trace_proc(BIF_P, cp_locks, BIF_P, am_unlink, BIF_ARG_1);
+ trace_proc(BIF_P, ERTS_PROC_LOCK_MAIN,
+ BIF_P, am_unlink, BIF_ARG_1);
}
- if (is_internal_port(BIF_ARG_1)) {
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
- if (ERTS_PROC_PENDING_EXIT(BIF_P))
- goto handle_pending_exit;
-
- l = erts_remove_link(&ERTS_P_LINKS(BIF_P), BIF_ARG_1);
+ if (is_internal_pid(BIF_ARG_1)) {
+ ErtsLink *lnk = erts_link_tree_lookup(ERTS_P_LINKS(BIF_P), BIF_ARG_1);
+ if (lnk) {
+ erts_link_tree_delete(&ERTS_P_LINKS(BIF_P), lnk);
+ erts_proc_sig_send_unlink(BIF_P, lnk);
+ }
+ BIF_RET(am_true);
+ }
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
+ if (is_internal_port(BIF_ARG_1)) {
+ ErtsLink *lnk = erts_link_tree_lookup(ERTS_P_LINKS(BIF_P), BIF_ARG_1);
- if (l) {
+ if (lnk) {
+ Eterm ref;
+ Eterm *refp = erts_port_synchronous_ops ? &ref : NULL;
+ ErtsPortOpResult res = ERTS_PORT_OP_DROPPED;
Port *prt;
- erts_destroy_link(l);
+ erts_link_tree_delete(&ERTS_P_LINKS(BIF_P), lnk);
/* Send unlink signal */
prt = erts_port_lookup(BIF_ARG_1, ERTS_PORT_SFLGS_DEAD);
if (prt) {
- ErtsPortOpResult res;
- Eterm ref;
- Eterm *refp = erts_port_synchronous_ops ? &ref : NULL;
#ifdef DEBUG
ref = NIL;
#endif
- res = erts_port_unlink(BIF_P, prt, BIF_P->common.id, refp);
+ res = erts_port_unlink(BIF_P, prt, lnk, refp);
- if (refp && res == ERTS_PORT_OP_SCHEDULED) {
- ASSERT(is_internal_ordinary_ref(ref));
- BIF_TRAP3(await_port_send_result_trap, BIF_P, ref, am_true, am_true);
- }
}
+
+ if (res == ERTS_PORT_OP_DROPPED)
+ erts_link_release(lnk);
+ else if (refp && res == ERTS_PORT_OP_SCHEDULED) {
+ ASSERT(is_internal_ordinary_ref(ref));
+ BIF_TRAP3(await_port_send_result_trap, BIF_P, ref, am_true, am_true);
+ }
}
BIF_RET(am_true);
}
- else if (is_external_port(BIF_ARG_1)
- && external_port_dist_entry(BIF_ARG_1) == erts_this_dist_entry) {
- BIF_RET(am_true);
- }
-
- if (is_not_pid(BIF_ARG_1))
- BIF_ERROR(BIF_P, BADARG);
if (is_external_pid(BIF_ARG_1)) {
- ErtsDistLinkData dld;
+ ErtsLink *lnk, *dlnk;
+ ErtsLinkData *ldp;
+ DistEntry *dep;
int code;
ErtsDSigData dsd;
- /* Blind removal, we might have trapped or anything, this leaves
- us in a state where monitors might be inconsistent, but the dist
- code should take care of it. */
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
- if (ERTS_PROC_PENDING_EXIT(BIF_P))
- goto handle_pending_exit;
- l = erts_remove_link(&ERTS_P_LINKS(BIF_P), BIF_ARG_1);
-
- erts_proc_unlock(BIF_P,
- ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
-
- if (l)
- erts_destroy_link(l);
dep = external_pid_dist_entry(BIF_ARG_1);
- if (dep == erts_this_dist_entry) {
+ if (dep == erts_this_dist_entry)
BIF_RET(am_true);
- }
+
+ lnk = erts_link_tree_lookup(ERTS_P_LINKS(BIF_P), BIF_ARG_1);
+ if (!lnk)
+ BIF_RET(am_true);
+
+ erts_link_tree_delete(&ERTS_P_LINKS(BIF_P), lnk);
+ dlnk = erts_link_to_other(lnk, &ldp);
+
+ if (erts_link_dist_delete(dlnk))
+ erts_link_release_both(ldp);
+ else
+ erts_link_release(lnk);
code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_PROC_LOCK_MAIN,
ERTS_DSP_NO_LOCK, 0, 0);
@@ -1181,74 +946,27 @@ BIF_RETTYPE unlink_1(BIF_ALIST_1)
case ERTS_DSIG_PREP_NOT_ALIVE:
case ERTS_DSIG_PREP_NOT_CONNECTED:
BIF_RET(am_true);
-
case ERTS_DSIG_PREP_PENDING:
case ERTS_DSIG_PREP_CONNECTED:
- erts_remove_dist_link(&dld, BIF_P->common.id, BIF_ARG_1, dep);
code = erts_dsig_send_unlink(&dsd, BIF_P->common.id, BIF_ARG_1);
- erts_destroy_dist_link(&dld);
if (code == ERTS_DSIG_SEND_YIELD)
ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
- BIF_RET(am_true);
-
+ break;
default:
ASSERT(! "Invalid dsig prepare result");
BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
}
- }
-
- /* Internal pid... */
-
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
-
- cp_locks |= ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS;
-
- /* get process struct */
- rp = erts_pid2proc_opt(BIF_P, cp_locks,
- BIF_ARG_1, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
-
- if (ERTS_PROC_PENDING_EXIT(BIF_P)) {
- if (rp && rp != BIF_P)
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- goto handle_pending_exit;
- }
-
- /* unlink and ignore errors */
- l = erts_remove_link(&ERTS_P_LINKS(BIF_P), BIF_ARG_1);
- if (l != NULL)
- erts_destroy_link(l);
- if (!rp) {
- ERTS_ASSERT_IS_NOT_EXITING(BIF_P);
+ BIF_RET(am_true);
}
- else {
- rl = erts_remove_link(&ERTS_P_LINKS(rp), BIF_P->common.id);
- if (rl != NULL)
- erts_destroy_link(rl);
-
- if (IS_TRACED_FL(rp, F_TRACE_PROCS) && rl != NULL) {
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_STATUS);
- cp_locks &= ~ERTS_PROC_LOCK_STATUS;
- trace_proc(BIF_P, (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
- rp, am_getting_unlinked, BIF_P->common.id);
- }
- if (rp != BIF_P)
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
+ if (is_external_port(BIF_ARG_1)) {
+ if (external_port_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
+ BIF_RET(am_true);
+ /* Links to Remote ports not supported... */
}
-
- erts_proc_unlock(BIF_P, cp_locks & ~ERTS_PROC_LOCK_MAIN);
- BIF_RET(am_true);
-
- handle_pending_exit:
- erts_handle_pending_exit(BIF_P, (ERTS_PROC_LOCK_MAIN
- | ERTS_PROC_LOCK_LINK
- | ERTS_PROC_LOCK_STATUS));
- ASSERT(ERTS_PROC_IS_EXITING(BIF_P));
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
- ERTS_BIF_EXITED(BIF_P);
+ BIF_ERROR(BIF_P, BADARG);
}
BIF_RETTYPE hibernate_3(BIF_ALIST_3)
@@ -1493,22 +1211,69 @@ BIF_RETTYPE raise_3(BIF_ALIST_3)
return am_badarg;
}
+static BIF_RETTYPE
+erts_internal_await_exit_trap(BIF_ALIST_0)
+{
+ /*
+ * We have sent ourselves an exit signal which will
+ * terminate ourselves. Handle all signals until
+ * terminated in order to ensure that signal order
+ * is preserved. Yield if necessary.
+ */
+ erts_aint32_t state;
+ int reds = ERTS_BIF_REDS_LEFT(BIF_P);
+ (void) erts_proc_sig_handle_incoming(BIF_P, &state, &reds,
+ reds, !0);
+ BUMP_REDS(BIF_P, reds);
+ if (state & ERTS_PSFLG_EXITING)
+ ERTS_BIF_EXITED(BIF_P);
+
+ ERTS_BIF_YIELD0(&await_exit_trap, BIF_P);
+}
+
/**********************************************************************/
-/* send an exit message to another process (if trapping exits) or
- exit the other process */
+/* send an exit signal to another process */
-BIF_RETTYPE exit_2(BIF_ALIST_2)
+static BIF_RETTYPE send_exit_signal_bif(Process *c_p, Eterm id, Eterm reason, int exit2)
{
- Process *rp;
+ BIF_RETTYPE ret_val;
- /*
- * If the first argument is not a pid, or a local port it is an error.
- */
+ /*
+ * 'id' not a process id, nor a local port id is a 'badarg' error.
+ */
- if (is_internal_port(BIF_ARG_1)) {
+ if (is_internal_pid(id)) {
+ /*
+ * Preserve the very old and *very strange* behaviour
+ * of erlang:exit/2...
+ *
+ * - terminate ourselves even though exit reason
+ * is normal (unless we trap exit)
+ * - terminate ourselves before exit/2 return
+ */
+ int exit2_suicide = (exit2
+ && c_p->common.id == id
+ && (reason == am_kill
+ || !(c_p->flags & F_TRAP_EXIT)));
+ erts_proc_sig_send_exit(c_p, c_p->common.id, id,
+ reason, NIL, exit2_suicide);
+ if (!exit2_suicide)
+ ERTS_BIF_PREP_RET(ret_val, am_true);
+ else {
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ);
+ erts_proc_sig_fetch(c_p);
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
+ ERTS_BIF_PREP_TRAP0(ret_val, &await_exit_trap, c_p);
+ }
+ }
+ else if (is_internal_port(id)) {
Eterm ref, *refp;
Uint32 invalid_flags;
Port *prt;
+ ErtsPortOpResult res = ERTS_PORT_OP_DONE;
+#ifdef DEBUG
+ ref = NIL;
+#endif
if (erts_port_synchronous_ops) {
refp = &ref;
@@ -1519,108 +1284,75 @@ BIF_RETTYPE exit_2(BIF_ALIST_2)
invalid_flags = ERTS_PORT_SFLGS_INVALID_LOOKUP;
}
- prt = erts_port_lookup(BIF_ARG_1, invalid_flags);
-
- if (prt) {
- ErtsPortOpResult res;
-
-#ifdef DEBUG
- ref = NIL;
-#endif
-
- res = erts_port_exit(BIF_P, 0, prt, BIF_P->common.id, BIF_ARG_2, refp);
-
- ERTS_BIF_CHK_EXITED(BIF_P);
-
- if (refp && res == ERTS_PORT_OP_SCHEDULED) {
- ASSERT(is_internal_ordinary_ref(ref));
- BIF_TRAP3(await_port_send_result_trap, BIF_P, ref, am_true, am_true);
- }
-
- }
-
- BIF_RET(am_true);
+ prt = erts_port_lookup(id, invalid_flags);
+ if (prt)
+ res = erts_port_exit(c_p, 0, prt, c_p->common.id, reason, refp);
+
+ if (!refp || res != ERTS_PORT_OP_SCHEDULED)
+ ERTS_BIF_PREP_RET(ret_val, am_true);
+ else {
+ ASSERT(is_internal_ordinary_ref(ref));
+ ERTS_BIF_PREP_TRAP3(ret_val, await_port_send_result_trap,
+ c_p, ref, am_true, am_true);
+ }
}
- else if(is_external_port(BIF_ARG_1)
- && external_port_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
- BIF_RET(am_true);
-
- /*
- * If it is a remote pid, send a signal to the remote node.
- */
-
- if (is_external_pid(BIF_ARG_1)) {
- int code;
- ErtsDSigData dsd;
- DistEntry *dep;
-
- dep = external_pid_dist_entry(BIF_ARG_1);
- ERTS_ASSERT(dep);
- if(dep == erts_this_dist_entry)
- BIF_RET(am_true);
-
- code = erts_dsig_prepare(&dsd, dep, BIF_P, ERTS_PROC_LOCK_MAIN,
- ERTS_DSP_NO_LOCK, 0, 1);
- switch (code) {
- case ERTS_DSIG_PREP_NOT_ALIVE:
- case ERTS_DSIG_PREP_NOT_CONNECTED:
- BIF_RET(am_true);
- case ERTS_DSIG_PREP_PENDING:
- case ERTS_DSIG_PREP_CONNECTED:
- code = erts_dsig_send_exit2(&dsd, BIF_P->common.id, BIF_ARG_1, BIF_ARG_2);
- if (code == ERTS_DSIG_SEND_YIELD)
- ERTS_BIF_YIELD_RETURN(BIF_P, am_true);
- BIF_RET(am_true);
- default:
- ERTS_ASSERT(! "Invalid dsig prepare result");
- }
+ else if (is_external_pid(id)) {
+ DistEntry *dep = external_pid_dist_entry(id);
+ if (dep == erts_this_dist_entry)
+ ERTS_BIF_PREP_RET(ret_val, am_true); /* Old incarnation of this node... */
+ else {
+ int code;
+ ErtsDSigData dsd;
+
+ code = erts_dsig_prepare(&dsd, dep, c_p, ERTS_PROC_LOCK_MAIN,
+ ERTS_DSP_NO_LOCK, 0, 1);
+ switch (code) {
+ case ERTS_DSIG_PREP_NOT_ALIVE:
+ case ERTS_DSIG_PREP_NOT_CONNECTED:
+ ERTS_BIF_PREP_RET(ret_val, am_true);
+ break;
+ case ERTS_DSIG_PREP_PENDING:
+ case ERTS_DSIG_PREP_CONNECTED:
+ code = erts_dsig_send_exit2(&dsd, c_p->common.id, id, reason);
+ if (code == ERTS_DSIG_SEND_YIELD)
+ ERTS_BIF_PREP_YIELD_RETURN(ret_val, c_p, am_true);
+ else
+ ERTS_BIF_PREP_RET(ret_val, am_true);
+ break;
+ default:
+ ASSERT(! "Invalid dsig prepare result");
+ ERTS_BIF_PREP_ERROR(ret_val, c_p, EXC_INTERNAL_ERROR);
+ break;
+ }
+ }
}
- else if (is_not_internal_pid(BIF_ARG_1)) {
- BIF_ERROR(BIF_P, BADARG);
+ else if (is_external_port(id)) {
+ DistEntry *dep = external_port_dist_entry(id);
+ if(dep == erts_this_dist_entry)
+ ERTS_BIF_PREP_RET(ret_val, am_true); /* Old incarnation of this node... */
+ else
+ ERTS_BIF_PREP_ERROR(ret_val, c_p, BADARG);
}
else {
- /*
- * The pid is internal. Verify that it refers to an existing process.
- */
- ErtsProcLocks rp_locks;
-
- if (BIF_ARG_1 == BIF_P->common.id) {
- rp_locks = ERTS_PROC_LOCKS_ALL;
- rp = BIF_P;
- erts_proc_lock(rp, ERTS_PROC_LOCKS_ALL_MINOR);
- }
- else {
- rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
- rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
- BIF_ARG_1, rp_locks);
- if (!rp) {
- BIF_RET(am_true);
- }
- }
+ /* Not an id of a process or a port... */
- /*
- * Send an exit signal.
- */
- erts_send_exit_signal(BIF_P,
- BIF_P->common.id,
- rp,
- &rp_locks,
- BIF_ARG_2,
- NIL,
- NULL,
- BIF_P == rp ? ERTS_XSIG_FLG_NO_IGN_NORMAL : 0);
- if (rp == BIF_P)
- rp_locks &= ~ERTS_PROC_LOCK_MAIN;
- if (rp_locks)
- erts_proc_unlock(rp, rp_locks);
- /*
- * We may have exited ourselves and may have to take action.
- */
- ERTS_BIF_CHK_EXITED(BIF_P);
- BIF_RET(am_true);
+ ERTS_BIF_PREP_ERROR(ret_val, c_p, BADARG);
}
+
+ return ret_val;
}
+BIF_RETTYPE exit_2(BIF_ALIST_2)
+{
+ return send_exit_signal_bif(BIF_P, BIF_ARG_1, BIF_ARG_2, !0);
+}
+
+BIF_RETTYPE exit_signal_2(BIF_ALIST_2)
+{
+ return send_exit_signal_bif(BIF_P, BIF_ARG_1, BIF_ARG_2, 0);
+}
+
+
/**********************************************************************/
/* this sets some process info- trapping exits or the error handler */
@@ -1709,36 +1441,13 @@ BIF_RETTYPE process_flag_2(BIF_ALIST_2)
BIF_RET(old_value);
}
else if (BIF_ARG_1 == am_trap_exit) {
- erts_aint32_t state;
- Uint trap_exit;
- if (BIF_ARG_2 == am_true) {
- trap_exit = 1;
- } else if (BIF_ARG_2 == am_false) {
- trap_exit = 0;
- } else {
- goto error;
- }
- /*
- * NOTE: It is important that we check for pending exit signals
- * and handle them before returning if trap_exit is set to
- * true. For more info, see implementation of
- * erts_send_exit_signal().
- */
- erts_proc_lock(BIF_P, ERTS_PROC_LOCKS_XSIG_SEND);
- if (trap_exit)
- state = erts_atomic32_read_bor_mb(&BIF_P->state,
- ERTS_PSFLG_TRAP_EXIT);
+ old_value = (BIF_P->flags & F_TRAP_EXIT) ? am_true : am_false;
+ if (BIF_ARG_2 == am_true)
+ BIF_P->flags |= F_TRAP_EXIT;
+ else if (BIF_ARG_2 == am_false)
+ BIF_P->flags &= ~F_TRAP_EXIT;
else
- state = erts_atomic32_read_band_mb(&BIF_P->state,
- ~ERTS_PSFLG_TRAP_EXIT);
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCKS_XSIG_SEND);
-
- if (state & ERTS_PSFLG_PENDING_EXIT) {
- erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
- ERTS_BIF_EXITED(BIF_P);
- }
-
- old_value = (state & ERTS_PSFLG_TRAP_EXIT) ? am_true : am_false;
+ goto error;
BIF_RET(old_value);
}
else if (BIF_ARG_1 == am_scheduler) {
@@ -2142,9 +1851,6 @@ do_send(Process *p, Eterm to, Eterm msg, Eterm *refp, ErtsSendContext *ctx)
}
switch (erts_port_command(p, ps_flags, pt, msg, refp)) {
- case ERTS_PORT_OP_CALLER_EXIT:
- /* We are exiting... */
- return SEND_USER_ERROR;
case ERTS_PORT_OP_BUSY:
/* Nothing has been sent */
if (ctx->suspend)
@@ -4373,14 +4079,88 @@ BIF_RETTYPE group_leader_0(BIF_ALIST_0)
}
/**********************************************************************/
-/* arg1 == leader, arg2 == new member */
+/* set group leader */
-BIF_RETTYPE group_leader_2(BIF_ALIST_2)
+int
+erts_set_group_leader(Process *proc, Eterm new_gl)
{
- Process* new_member;
+
+ erts_aint32_t state;
- if (is_not_pid(BIF_ARG_1)) {
- BIF_ERROR(BIF_P, BADARG);
+ ASSERT(is_pid(new_gl));
+
+ state = erts_atomic32_read_nob(&proc->state);
+
+ if (state & ERTS_PSFLG_EXITING)
+ return 0;
+
+ ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks(proc));
+
+ if (!(state & ERTS_PSFLG_DIRTY_RUNNING))
+ proc->group_leader = STORE_NC_IN_PROC(proc, new_gl);
+ else {
+ ErlHeapFragment *bp;
+ Eterm *hp;
+ /*
+ * Currently executing on a dirty scheduler,
+ * so we are not allowed to write to its heap.
+ * Store group leader pid in heap fragment.
+ */
+ bp = new_message_buffer(NC_HEAP_SIZE(new_gl));
+ hp = bp->mem;
+ proc->group_leader = STORE_NC(&hp,
+ &proc->off_heap,
+ new_gl);
+ bp->next = proc->mbuf;
+ proc->mbuf = bp;
+ proc->mbuf_sz += bp->used_size;
+ }
+
+ return !0;
+}
+
+BIF_RETTYPE erts_internal_group_leader_3(BIF_ALIST_3)
+{
+ if (is_not_pid(BIF_ARG_1))
+ BIF_ERROR(BIF_P, BADARG);
+ if (is_not_internal_pid(BIF_ARG_2))
+ BIF_ERROR(BIF_P, BADARG);
+ if (is_not_internal_ref(BIF_ARG_3))
+ BIF_ERROR(BIF_P, BADARG);
+
+ erts_proc_sig_send_group_leader(BIF_P,
+ BIF_ARG_2,
+ BIF_ARG_1,
+ BIF_ARG_3);
+ BIF_RET(am_ok);
+}
+
+BIF_RETTYPE erts_internal_group_leader_2(BIF_ALIST_2)
+{
+ if (is_not_pid(BIF_ARG_1))
+ BIF_RET(am_badarg);
+
+ if (is_internal_pid(BIF_ARG_2)) {
+ Process *rp;
+ int res;
+
+ if (BIF_ARG_2 == BIF_P->common.id)
+ rp = BIF_P;
+ else {
+ rp = erts_try_lock_sig_free_proc(BIF_ARG_2,
+ ERTS_PROC_LOCK_MAIN);
+ if (!rp)
+ BIF_RET(am_badarg);
+ if (rp == ERTS_PROC_LOCK_BUSY)
+ BIF_RET(am_false);
+ }
+
+ res = erts_set_group_leader(rp, BIF_ARG_1);
+
+ if (rp != BIF_P)
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+
+ BIF_RET(res ? am_true : am_badarg);
}
if (is_external_pid(BIF_ARG_2)) {
@@ -4408,74 +4188,8 @@ BIF_RETTYPE group_leader_2(BIF_ALIST_2)
ERTS_ASSERT(! "Invalid dsig prepare result");
}
}
- else if (is_internal_pid(BIF_ARG_2)) {
- int await_x;
- ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_STATUS;
- new_member = erts_pid2proc_nropt(BIF_P, ERTS_PROC_LOCK_MAIN,
- BIF_ARG_2, locks);
- if (!new_member)
- BIF_ERROR(BIF_P, BADARG);
-
- if (new_member == ERTS_PROC_LOCK_BUSY)
- ERTS_BIF_YIELD2(bif_export[BIF_group_leader_2], BIF_P,
- BIF_ARG_1, BIF_ARG_2);
-
- await_x = (new_member != BIF_P
- && ERTS_PROC_PENDING_EXIT(new_member));
- if (!await_x) {
- if (is_immed(BIF_ARG_1))
- new_member->group_leader = BIF_ARG_1;
- else {
- locks &= ~ERTS_PROC_LOCK_STATUS;
- erts_proc_unlock(new_member, ERTS_PROC_LOCK_STATUS);
- if (new_member == BIF_P
- || !(erts_atomic32_read_nob(&new_member->state)
- & ERTS_PSFLG_DIRTY_RUNNING)) {
- new_member->group_leader = STORE_NC_IN_PROC(new_member,
- BIF_ARG_1);
- }
- else {
- ErlHeapFragment *bp;
- Eterm *hp;
- /*
- * Other process executing on a dirty scheduler,
- * so we are not allowed to write to its heap.
- * Store in heap fragment.
- */
-
- bp = new_message_buffer(NC_HEAP_SIZE(BIF_ARG_1));
- hp = bp->mem;
- new_member->group_leader = STORE_NC(&hp,
- &new_member->off_heap,
- BIF_ARG_1);
- bp->next = new_member->mbuf;
- new_member->mbuf = bp;
- new_member->mbuf_sz += bp->used_size;
- }
- }
- }
-
- if (new_member == BIF_P)
- locks &= ~ERTS_PROC_LOCK_MAIN;
- if (locks)
- erts_proc_unlock(new_member, locks);
-
- if (await_x) {
- /* Wait for new_member to terminate; then badarg */
- Eterm args[2] = {BIF_ARG_1, BIF_ARG_2};
- ERTS_BIF_AWAIT_X_APPLY_TRAP(BIF_P,
- BIF_ARG_2,
- am_erlang,
- am_group_leader,
- args,
- 2);
- }
- BIF_RET(am_true);
- }
- else {
- BIF_ERROR(BIF_P, BADARG);
- }
+ BIF_RET(am_badarg);
}
BIF_RETTYPE system_flag_2(BIF_ALIST_2)
@@ -4662,7 +4376,6 @@ BIF_RETTYPE system_flag_2(BIF_ALIST_2)
BIF_RET(ret);
} else if (BIF_ARG_1 == make_small(1)) {
int i, max;
- ErtsMessage* mp;
erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_thr_progress_block();
@@ -4677,16 +4390,8 @@ BIF_RETTYPE system_flag_2(BIF_ALIST_2)
#endif
p->seq_trace_clock = 0;
p->seq_trace_lastcnt = 0;
- ERTS_MSGQ_MV_INQ2PRIVQ(p);
- mp = p->msg.first;
- while(mp != NULL) {
-#ifdef USE_VM_PROBES
- ERL_MESSAGE_TOKEN(mp) = (ERL_MESSAGE_DT_UTAG(mp) != NIL) ? am_have_dt_utag : NIL;
-#else
- ERL_MESSAGE_TOKEN(mp) = NIL;
-#endif
- mp = mp->next;
- }
+
+ erts_proc_sig_clear_seq_trace_tokens(p);
}
}
@@ -4949,58 +4654,17 @@ static BIF_RETTYPE bif_return_trap(BIF_ALIST_2)
BIF_RET(res);
}
-/*
- * NOTE: The erts_bif_prep_await_proc_exit_*() functions are
- * tightly coupled with the implementation of erlang:await_proc_exit/3.
- * The erts_bif_prep_await_proc_exit_*() functions can safely call
- * skip_current_msgq() since they know that erlang:await_proc_exit/3
- * unconditionally will do a monitor and then unconditionally will
- * wait for the corresponding 'DOWN' message in a receive, and no other
- * receive is done before this receive. This optimization removes an
- * unnecessary scan of the currently existing message queue (which
- * can be large). If the erlang:await_proc_exit/3 implementation
- * is changed so that the above isn't true, nasty bugs in later
- * receives, etc, may appear.
- */
-
-static ERTS_INLINE int
-skip_current_msgq(Process *c_p)
-{
- int res;
-#if defined(ERTS_ENABLE_LOCK_CHECK)
- erts_proc_lc_chk_only_proc_main(c_p);
-#endif
-
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- if (ERTS_PROC_PENDING_EXIT(c_p)) {
- KILL_CATCHES(c_p);
- c_p->freason = EXC_EXIT;
- res = 0;
- }
- else {
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- c_p->msg.save = c_p->msg.last;
- res = 1;
- }
- erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- return res;
-}
-
void
erts_bif_prep_await_proc_exit_data_trap(Process *c_p, Eterm pid, Eterm ret)
{
- if (skip_current_msgq(c_p)) {
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_data, ret);
- }
+ ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_data, ret);
}
void
erts_bif_prep_await_proc_exit_reason_trap(Process *c_p, Eterm pid)
{
- if (skip_current_msgq(c_p)) {
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p,
- pid, am_reason, am_undefined);
- }
+ ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p,
+ pid, am_reason, am_undefined);
}
void
@@ -5011,21 +4675,19 @@ erts_bif_prep_await_proc_exit_apply_trap(Process *c_p,
Eterm args[],
int nargs)
{
+ Eterm term;
+ Eterm *hp;
+ int i;
ASSERT(is_atom(module) && is_atom(function));
- if (skip_current_msgq(c_p)) {
- Eterm term;
- Eterm *hp;
- int i;
- hp = HAlloc(c_p, 4+2*nargs);
- term = NIL;
- for (i = nargs-1; i >= 0; i--) {
- term = CONS(hp, args[i], term);
- hp += 2;
- }
- term = TUPLE3(hp, module, function, term);
- ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_apply, term);
+ hp = HAlloc(c_p, 4+2*nargs);
+ term = NIL;
+ for (i = nargs-1; i >= 0; i--) {
+ term = CONS(hp, args[i], term);
+ hp += 2;
}
+ term = TUPLE3(hp, module, function, term);
+ ERTS_BIF_PREP_TRAP3_NO_RET(await_proc_exit_trap, c_p, pid, am_apply, term);
}
Export bif_return_trap_export;
@@ -5063,6 +4725,9 @@ void erts_init_bif(void)
am_erts_internal, am_dsend_continue_trap, 1,
dsend_continue_trap_1);
+ erts_init_trap_export(&await_exit_trap, am_erts_internal,
+ am_await_exit, 0, erts_internal_await_exit_trap);
+
flush_monitor_messages_trap = erts_export_put(am_erts_internal,
am_flush_monitor_messages,
3);
diff --git a/erts/emulator/beam/bif.h b/erts/emulator/beam/bif.h
index a2bc883dbe..dca53686f4 100644
--- a/erts/emulator/beam/bif.h
+++ b/erts/emulator/beam/bif.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -306,7 +306,7 @@ do { \
(Proc)->freason = TRAP; \
} while (0)
-#define BIF_TRAP0(p, Trap_) do { \
+#define BIF_TRAP0(Trap_, p) do { \
(p)->arity = 0; \
(p)->i = (BeamInstr*) ((Trap_)->addressv[erts_active_code_ix()]); \
(p)->freason = TRAP; \
@@ -404,7 +404,7 @@ do { \
#define ERTS_BIF_YIELD0(TRP, P) \
do { \
ERTS_VBUMP_ALL_REDS((P)); \
- BIF_TRAP0((TRP), (P)); \
+ BIF_TRAP0((TRP), (P)); \
} while (0)
#define ERTS_BIF_YIELD1(TRP, P, A0) \
@@ -428,7 +428,7 @@ do { \
#define ERTS_BIF_EXITED(PROC) \
do { \
KILL_CATCHES((PROC)); \
- BIF_ERROR((PROC), EXC_EXIT); \
+ BIF_ERROR((PROC), EXTAG_EXIT); \
} while (0)
#define ERTS_BIF_CHK_EXITED(PROC) \
diff --git a/erts/emulator/beam/bif.tab b/erts/emulator/beam/bif.tab
index be653ee2a0..93613ac2eb 100644
--- a/erts/emulator/beam/bif.tab
+++ b/erts/emulator/beam/bif.tab
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1996-2017. All Rights Reserved.
+# Copyright Ericsson AB 1996-2018. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -62,6 +62,7 @@ bif erlang:erase/0
bif erlang:erase/1
bif erlang:exit/1
bif erlang:exit/2
+bif erlang:exit_signal/2
bif erlang:external_size/1
bif erlang:external_size/2
gcbif erlang:float/1
@@ -73,7 +74,8 @@ bif erlang:get/0
bif erlang:get/1
bif erlang:get_keys/1
bif erlang:group_leader/0
-bif erlang:group_leader/2
+bif erts_internal:group_leader/2
+bif erts_internal:group_leader/3
bif erlang:halt/2
bif erlang:phash/2
bif erlang:phash2/1
@@ -187,6 +189,8 @@ bif erts_internal:release_literal_area_switch/0
bif erts_internal:scheduler_wall_time/1
+bif erts_internal:dirty_process_handle_signals/1
+
# inet_db support
bif erlang:port_set_data/2
bif erlang:port_get_data/1
@@ -435,13 +439,6 @@ bif erts_debug:dirty_io/2
bif erts_debug:dirty/3
#
-# Monitor testing bif's...
-#
-bif erts_debug:dump_monitors/1
-bif erts_debug:dump_links/1
-
-
-#
# Lock counter bif's
#
bif erts_debug:lcnt_control/2
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 3967f7f7fc..4dabac3512 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -39,6 +39,7 @@
#include "erl_instrument.h"
#include "erl_hl_timer.h"
#include "erl_thr_progress.h"
+#include "erl_proc_sig_queue.h"
/* Forward declarations -- should really appear somewhere else */
static void process_killer(void);
@@ -107,36 +108,11 @@ process_killer(void)
if ((j = sys_get_key(0)) <= 0)
erts_exit(0, "");
switch(j) {
- case 'k': {
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
- erts_aint32_t state;
- erts_proc_inc_refc(rp);
- erts_proc_lock(rp, rp_locks);
- state = erts_atomic32_read_acqb(&rp->state);
- if (state & (ERTS_PSFLG_FREE
- | ERTS_PSFLG_EXITING
- | ERTS_PSFLG_ACTIVE
- | ERTS_PSFLG_ACTIVE_SYS
- | ERTS_PSFLG_IN_RUNQ
- | ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_DIRTY_RUNNING
- | ERTS_PSFLG_DIRTY_RUNNING_SYS)) {
- erts_printf("Can only kill WAITING processes this way\n");
- }
- else {
- (void) erts_send_exit_signal(NULL,
- NIL,
- rp,
- &rp_locks,
- am_kill,
- NIL,
- NULL,
- 0);
- }
- erts_proc_unlock(rp, rp_locks);
- erts_proc_dec_refc(rp);
- }
+ case 'k':
+ /* Send a 'kill' exit signal from init process */
+ erts_proc_sig_send_exit(NULL, erts_init_process_id,
+ rp->common.id, am_kill, NIL,
+ 0);
case 'n': br = 1; break;
case 'r': return;
default: return;
@@ -161,47 +137,64 @@ static void doit_print_link(ErtsLink *lnk, void *vpcontext)
if (pcontext->is_first) {
pcontext->is_first = 0;
- erts_print(to, to_arg, "%T", lnk->pid);
+ erts_print(to, to_arg, "%T", lnk->other.item);
} else {
- erts_print(to, to_arg, ", %T", lnk->pid);
+ erts_print(to, to_arg, ", %T", lnk->other.item);
}
}
static void doit_print_monitor(ErtsMonitor *mon, void *vpcontext)
{
+ ErtsMonitorData *mdp;
PrintMonitorContext *pcontext = vpcontext;
fmtfn_t to = pcontext->to;
void *to_arg = pcontext->to_arg;
char *prefix = ", ";
- if (pcontext->is_first) {
- pcontext->is_first = 0;
- prefix = "";
- }
-
+ mdp = erts_monitor_to_data(mon);
switch (mon->type) {
- case MON_ORIGIN:
- if (is_atom(mon->u.pid)) { /* dist by name */
- ASSERT(is_node_name_atom(mon->u.pid));
- erts_print(to, to_arg, "%s{to,{%T,%T},%T}", prefix, mon->name,
- mon->u.pid, mon->ref);
- } else if (is_atom(mon->name)){ /* local by name */
- erts_print(to, to_arg, "%s{to,{%T,%T},%T}", prefix, mon->name,
- erts_this_dist_entry->sysname, mon->ref);
- } else { /* local and distributed by pid */
- erts_print(to, to_arg, "%s{to,%T,%T}", prefix, mon->u.pid, mon->ref);
- }
- break;
- case MON_TARGET:
- erts_print(to, to_arg, "%s{from,%T,%T}", prefix, mon->u.pid, mon->ref);
- break;
- case MON_NIF_TARGET: {
- ErtsResource* rsrc = mon->u.resource;
- erts_print(to, to_arg, "%s{from,{%T,%T},%T}", prefix, rsrc->type->module,
- rsrc->type->name, mon->ref);
- break;
- }
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_RESOURCE:
+ case ERTS_MON_TYPE_NODE:
+
+ if (pcontext->is_first) {
+ pcontext->is_first = 0;
+ prefix = "";
+ }
+
+ if (erts_monitor_is_target(mon)) {
+ if (mon->type != ERTS_MON_TYPE_RESOURCE)
+ erts_print(to, to_arg, "%s{from,%T,%T}", prefix, mon->other.item, mdp->ref);
+ else {
+ ErtsResource* rsrc = mon->other.ptr;
+ erts_print(to, to_arg, "%s{from,{%T,%T},%T}", prefix, rsrc->type->module,
+ rsrc->type->name, mdp->ref);
+ }
+ }
+ else {
+ if (!(mon->flags & ERTS_ML_FLG_NAME))
+ erts_print(to, to_arg, "%s{to,%T,%T}", prefix, mon->other.item, mdp->ref);
+ else {
+ ErtsMonitorDataExtended *mdep = (ErtsMonitorDataExtended *) mdp;
+ Eterm node;
+ if (mdep->dist)
+ node = mdep->dist->nodename;
+ else
+ node = erts_this_dist_entry->sysname;
+ erts_print(to, to_arg, "%s{to,{%T,%T},%T}", prefix, mdep->u.name,
+ node, mdp->ref);
+ }
+ }
+
+ break;
+
+ default:
+ /* ignore other monitors... */
+ break;
}
}
@@ -257,15 +250,22 @@ print_process_info(fmtfn_t to, void *to_arg, Process *p)
}
erts_print(to, to_arg, "Spawned by: %T\n", p->parent);
- ERTS_MSGQ_MV_INQ2PRIVQ(p);
- erts_print(to, to_arg, "Message queue length: %d\n", p->msg.len);
+
+ erts_proc_lock(p, ERTS_PROC_LOCK_MSGQ);
+ erts_proc_sig_fetch(p);
+ erts_proc_unlock(p, ERTS_PROC_LOCK_MSGQ);
+ erts_print(to, to_arg, "Message queue length: %d\n", p->sig_qs.len);
/* display the message queue only if there is anything in it */
- if (!ERTS_IS_CRASH_DUMPING && p->msg.first != NULL && !garbing) {
- ErtsMessage* mp;
+ if (!ERTS_IS_CRASH_DUMPING && p->sig_qs.first != NULL && !garbing) {
erts_print(to, to_arg, "Message queue: [");
- for (mp = p->msg.first; mp; mp = mp->next)
- erts_print(to, to_arg, mp->next ? "%T," : "%T", ERL_MESSAGE_TERM(mp));
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_NON_MSG((ErtsSignal *) mp))
+ erts_print(to, to_arg, mp->next ? "%T," : "%T",
+ ERL_MESSAGE_TERM(mp));
+ });
erts_print(to, to_arg, "]\n");
}
@@ -306,11 +306,12 @@ print_process_info(fmtfn_t to, void *to_arg, Process *p)
}
/* display the links only if there are any*/
- if (ERTS_P_LINKS(p) || ERTS_P_MONITORS(p)) {
+ if (ERTS_P_LINKS(p) || ERTS_P_MONITORS(p) || ERTS_P_LT_MONITORS(p)) {
PrintMonitorContext context = {1, to, to_arg};
erts_print(to, to_arg,"Link list: [");
- erts_doforall_links(ERTS_P_LINKS(p), &doit_print_link, &context);
- erts_doforall_monitors(ERTS_P_MONITORS(p), &doit_print_monitor, &context);
+ erts_link_tree_foreach(ERTS_P_LINKS(p), doit_print_link, &context);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(p), doit_print_monitor, &context);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(p), doit_print_monitor, &context);
erts_print(to, to_arg,"]\n");
}
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index cd799e04b8..fdf307da1b 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -45,6 +45,7 @@
#include "erl_binary.h"
#include "erl_thr_progress.h"
#include "dtrace-wrapper.h"
+#include "erl_proc_sig_queue.h"
#define DIST_CTL_DEFAULT_SIZE 64
@@ -109,7 +110,6 @@ int erts_dist_buf_busy_limit;
/* distribution trap functions */
Export* dmonitor_node_trap = NULL;
-Export* dmonitor_p_trap = NULL;
/* local variables */
static Export *dist_ctrl_put_data_trap;
@@ -184,6 +184,161 @@ get_suspended_on_de(DistEntry *dep, erts_aint32_t unset_qflgs)
}
}
+#define ERTS_MON_LNK_FIRE_LIMIT 100
+
+static void monitor_connection_down(ErtsMonitor *mon, void *unused)
+{
+ if (erts_monitor_is_origin(mon))
+ erts_proc_sig_send_demonitor(mon);
+ else
+ erts_proc_sig_send_monitor_down(mon, am_noconnection);
+}
+
+static void link_connection_down(ErtsLink *lnk, void *vdist)
+{
+ erts_proc_sig_send_link_exit(NULL, THE_NON_VALUE, lnk,
+ am_noconnection, NIL);
+}
+
+typedef enum {
+ ERTS_CML_CLEANUP_STATE_LINKS,
+ ERTS_CML_CLEANUP_STATE_MONITORS,
+ ERTS_CML_CLEANUP_STATE_ONAME_MONITORS,
+ ERTS_CML_CLEANUP_STATE_NODE_MONITORS
+} ErtsConMonLnkCleaupState;
+
+typedef struct {
+ ErtsConMonLnkCleaupState state;
+ ErtsMonLnkDist *dist;
+ void *yield_state;
+ int trigger_node_monitors;
+ Eterm nodename;
+ Eterm visability;
+ Eterm reason;
+ ErlOffHeap oh;
+ Eterm heap[1];
+} ErtsConMonLnkCleanup;
+
+static void
+con_monitor_link_cleanup(void *vcmlcp)
+{
+ ErtsConMonLnkCleanup *cmlcp = vcmlcp;
+ ErtsMonLnkDist *dist = cmlcp->dist;
+ ErtsSchedulerData *esdp;
+ int yield;
+
+ switch (cmlcp->state) {
+ case ERTS_CML_CLEANUP_STATE_LINKS:
+ yield = erts_link_list_foreach_delete_yielding(&dist->links,
+ link_connection_down,
+ NULL, &cmlcp->yield_state,
+ ERTS_MON_LNK_FIRE_LIMIT);
+ if (yield)
+ break;
+
+ ASSERT(!cmlcp->yield_state);
+ cmlcp->state = ERTS_CML_CLEANUP_STATE_MONITORS;
+ case ERTS_CML_CLEANUP_STATE_MONITORS:
+ yield = erts_monitor_list_foreach_delete_yielding(&dist->monitors,
+ monitor_connection_down,
+ NULL, &cmlcp->yield_state,
+ ERTS_MON_LNK_FIRE_LIMIT);
+ if (yield)
+ break;
+
+ ASSERT(!cmlcp->yield_state);
+ cmlcp->state = ERTS_CML_CLEANUP_STATE_ONAME_MONITORS;
+ case ERTS_CML_CLEANUP_STATE_ONAME_MONITORS:
+ yield = erts_monitor_tree_foreach_delete_yielding(&dist->orig_name_monitors,
+ monitor_connection_down,
+ NULL, &cmlcp->yield_state,
+ ERTS_MON_LNK_FIRE_LIMIT/2);
+ if (yield)
+ break;
+
+ cmlcp->dist = NULL;
+ erts_mon_link_dist_dec_refc(dist);
+
+ ASSERT(!cmlcp->yield_state);
+ cmlcp->state = ERTS_CML_CLEANUP_STATE_NODE_MONITORS;
+ case ERTS_CML_CLEANUP_STATE_NODE_MONITORS:
+ if (cmlcp->trigger_node_monitors) {
+ send_nodes_mon_msgs(NULL,
+ am_nodedown,
+ cmlcp->nodename,
+ cmlcp->visability,
+ cmlcp->reason);
+ }
+ erts_cleanup_offheap(&cmlcp->oh);
+ erts_free(ERTS_ALC_T_CML_CLEANUP, vcmlcp);
+ return; /* done */
+ }
+
+ /* yield... */
+
+ esdp = erts_get_scheduler_data();
+ ASSERT(esdp && esdp->type == ERTS_SCHED_NORMAL);
+ erts_schedule_misc_aux_work((int) esdp->no,
+ con_monitor_link_cleanup,
+ (void *) cmlcp);
+}
+
+static void
+schedule_con_monitor_link_cleanup(ErtsMonLnkDist *dist,
+ Eterm nodename,
+ Eterm visability,
+ Eterm reason)
+{
+ if (dist || is_value(nodename)) {
+ ErtsSchedulerData *esdp;
+ ErtsConMonLnkCleanup *cmlcp;
+ Uint rsz, size;
+
+ size = sizeof(ErtsConMonLnkCleanup);
+
+ if (is_non_value(reason) || is_immed(reason)) {
+ rsz = 0;
+ size -= sizeof(Eterm);
+ }
+ else {
+ rsz = size_object(reason);
+ size += sizeof(Eterm) * (rsz - 1);
+ }
+
+ cmlcp = erts_alloc(ERTS_ALC_T_CML_CLEANUP, size);
+
+ ERTS_INIT_OFF_HEAP(&cmlcp->oh);
+
+ cmlcp->yield_state = NULL;
+ cmlcp->dist = dist;
+ if (!dist)
+ cmlcp->state = ERTS_CML_CLEANUP_STATE_NODE_MONITORS;
+ else {
+ cmlcp->state = ERTS_CML_CLEANUP_STATE_LINKS;
+ erts_mtx_lock(&dist->mtx);
+ ASSERT(dist->alive);
+ dist->alive = 0;
+ erts_mtx_unlock(&dist->mtx);
+ }
+
+ cmlcp->trigger_node_monitors = is_value(nodename);
+ cmlcp->nodename = nodename;
+ cmlcp->visability = visability;
+ if (rsz == 0)
+ cmlcp->reason = reason;
+ else {
+ Eterm *hp = &cmlcp->heap[0];
+ cmlcp->reason = copy_struct(reason, rsz, &hp, &cmlcp->oh);
+ }
+
+ esdp = erts_get_scheduler_data();
+ ASSERT(esdp && esdp->type == ERTS_SCHED_NORMAL);
+ erts_schedule_misc_aux_work((int) esdp->no,
+ con_monitor_link_cleanup,
+ (void *) cmlcp);
+ }
+}
+
/*
** A full node name constists of a "n@h"
**
@@ -235,170 +390,6 @@ int is_node_name_atom(Eterm a)
return is_node_name((char*)atom_tab(i)->name, atom_tab(i)->len);
}
-typedef struct {
- DistEntry *dep;
- Eterm *lhp;
-} NetExitsContext;
-
-/*
-** This function is called when a distribution
-** port or process terminates
-*/
-static void doit_monitor_net_exits(ErtsMonitor *mon, void *vnecp)
-{
- Process *rp;
- ErtsMonitor *rmon;
- DistEntry *dep = ((NetExitsContext *) vnecp)->dep;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK;
-
- rp = erts_pid2proc(NULL, 0, mon->u.pid, rp_locks);
- if (!rp)
- goto done;
-
- if (mon->type == MON_ORIGIN) {
- /* local pid is being monitored */
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- /* ASSERT(rmon != NULL); nope, can happen during process exit */
- if (rmon != NULL) {
- erts_destroy_monitor(rmon);
- }
- } else {
- DeclareTmpHeapNoproc(lhp,3);
- Eterm watched;
- UseTmpHeapNoproc(3);
- ASSERT(mon->type == MON_TARGET);
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- /* ASSERT(rmon != NULL); can happen during process exit */
- if (rmon != NULL) {
- ASSERT(rmon->type == MON_ORIGIN);
- ASSERT(is_atom(rmon->name) || is_nil(rmon->name));
- watched = (is_atom(rmon->name)
- ? TUPLE2(lhp, rmon->name, dep->sysname)
- : rmon->u.pid);
- rp_locks |= ERTS_PROC_LOCKS_MSG_SEND;
- erts_proc_lock(rp, ERTS_PROC_LOCKS_MSG_SEND);
- erts_queue_monitor_message(rp, &rp_locks, mon->ref, am_process,
- watched, am_noconnection);
- erts_destroy_monitor(rmon);
- }
- UnUseTmpHeapNoproc(3);
- }
- erts_proc_unlock(rp, rp_locks);
- done:
- erts_destroy_monitor(mon);
-}
-
-typedef struct {
- NetExitsContext *necp;
- ErtsLink *lnk;
-} LinkNetExitsContext;
-
-/*
-** This is the function actually doing the job of sending exit messages
-** for links in a dist entry upon net_exit (the node goes down), NB,
-** only process links, not node monitors are handled here,
-** they reside in a separate tree....
-*/
-static void doit_link_net_exits_sub(ErtsLink *sublnk, void *vlnecp)
-{
- ErtsLink *lnk = ((LinkNetExitsContext *) vlnecp)->lnk; /* the local pid */
- ErtsLink *rlnk;
- Process *rp;
-
- ASSERT(lnk->type == LINK_PID);
- if (is_internal_pid(lnk->pid)) {
- int xres;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCKS_XSIG_SEND;
-
- rp = erts_pid2proc(NULL, 0, lnk->pid, rp_locks);
- if (!rp) {
- goto done;
- }
-
- rlnk = erts_remove_link(&ERTS_P_LINKS(rp), sublnk->pid);
- xres = erts_send_exit_signal(NULL,
- sublnk->pid,
- rp,
- &rp_locks,
- am_noconnection,
- NIL,
- NULL,
- 0);
-
- if (rlnk) {
- erts_destroy_link(rlnk);
- if (xres >= 0 && IS_TRACED_FL(rp, F_TRACE_PROCS)) {
- /* We didn't exit the process and it is traced */
- trace_proc(NULL, 0, rp, am_getting_unlinked, sublnk->pid);
- }
- }
- erts_proc_unlock(rp, rp_locks);
- }
- done:
- erts_destroy_link(sublnk);
-
-}
-
-
-
-
-
-/*
-** This function is called when a distribution
-** port or process terminates, once for each link on the high level,
-** it in turn traverses the link subtree for the specific link node...
-*/
-static void doit_link_net_exits(ErtsLink *lnk, void *vnecp)
-{
- LinkNetExitsContext lnec = {(NetExitsContext *) vnecp, lnk};
- ASSERT(lnk->type == LINK_PID);
- erts_sweep_links(ERTS_LINK_ROOT(lnk), &doit_link_net_exits_sub, (void *) &lnec);
-#ifdef DEBUG
- ERTS_LINK_ROOT(lnk) = NULL;
-#endif
- erts_destroy_link(lnk);
-}
-
-
-static void doit_node_link_net_exits(ErtsLink *lnk, void *vnecp)
-{
- DistEntry *dep = ((NetExitsContext *) vnecp)->dep;
- Eterm name = dep->sysname;
- Process *rp;
- ErtsLink *rlnk;
- Uint i,n;
- ASSERT(lnk->type == LINK_NODE);
- if (is_internal_pid(lnk->pid)) {
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK;
- ErlOffHeap *ohp;
- rp = erts_proc_lookup(lnk->pid);
- if (!rp)
- goto done;
- erts_proc_lock(rp, rp_locks);
- if (!ERTS_PROC_IS_EXITING(rp)) {
- rlnk = erts_remove_link(&ERTS_P_LINKS(rp), name);
- if (rlnk != NULL) {
- ASSERT(is_atom(rlnk->pid) && (rlnk->type == LINK_NODE));
- erts_destroy_link(rlnk);
- }
- n = ERTS_LINK_REFC(lnk);
- for (i = 0; i < n; ++i) {
- Eterm tup;
- Eterm *hp;
- ErtsMessage *msgp;
-
- msgp = erts_alloc_message_heap(rp, &rp_locks,
- 3, &hp, &ohp);
- tup = TUPLE2(hp, am_nodedown, name);
- erts_queue_message(rp, rp_locks, msgp, tup, am_system);
- }
- }
- erts_proc_unlock(rp, rp_locks);
- }
- done:
- erts_destroy_link(lnk);
-}
-
static void
set_node_not_alive(void *unused)
{
@@ -444,15 +435,8 @@ inc_no_nodes(void)
static void
kill_dist_ctrl_proc(void *vpid)
{
- Eterm pid = (Eterm) vpid;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
- Process *rp = erts_pid2proc(NULL, 0, pid, rp_locks);
- if (rp) {
- erts_send_exit_signal(NULL, rp->common.id, rp, &rp_locks,
- am_kill, NIL, NULL, 0);
- if (rp_locks)
- erts_proc_unlock(rp, rp_locks);
- }
+ erts_proc_sig_send_exit(NULL, (Eterm) vpid, (Eterm) vpid,
+ am_kill, NIL, 0);
}
static void
@@ -572,10 +556,7 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
}
}
else { /* Call from distribution controller (port/process) */
- NetExitsContext nec = {dep};
- ErtsLink *nlinks;
- ErtsLink *node_links;
- ErtsMonitor *monitors;
+ ErtsMonLnkDist *mld;
Uint32 flags;
erts_atomic_set_mb(&dep->dist_cmd_scheduled, 1);
@@ -601,14 +582,8 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
erts_mtx_unlock(&dep->qlock);
}
- erts_de_links_lock(dep);
- monitors = dep->monitors;
- nlinks = dep->nlinks;
- node_links = dep->node_links;
- dep->monitors = NULL;
- dep->nlinks = NULL;
- dep->node_links = NULL;
- erts_de_links_unlock(dep);
+ mld = dep->mld;
+ dep->mld = NULL;
nodename = dep->sysname;
flags = dep->flags;
@@ -617,15 +592,14 @@ int erts_do_net_exits(DistEntry *dep, Eterm reason)
erts_de_rwunlock(dep);
- erts_sweep_monitors(monitors, &doit_monitor_net_exits, (void *) &nec);
- erts_sweep_links(nlinks, &doit_link_net_exits, (void *) &nec);
- erts_sweep_links(node_links, &doit_node_link_net_exits, (void *) &nec);
-
- send_nodes_mon_msgs(NULL,
- am_nodedown,
- nodename,
- flags & DFLAG_PUBLISHED ? am_visible : am_hidden,
- reason == am_normal ? am_connection_closed : reason);
+ schedule_con_monitor_link_cleanup(mld,
+ nodename,
+ (flags & DFLAG_PUBLISHED
+ ? am_visible
+ : am_hidden),
+ (reason == am_normal
+ ? am_connection_closed
+ : reason));
clear_dist_entry(dep);
}
@@ -661,7 +635,6 @@ void init_dist(void)
/* Lookup/Install all references to trap functions */
dmonitor_node_trap = trap_function(am_dmonitor_node,3);
- dmonitor_p_trap = trap_function(am_dmonitor_p, 2);
dist_ctrl_put_data_trap = erts_export_put(am_erts_internal,
am_dist_ctrl_put_data,
2);
@@ -771,14 +744,6 @@ static void clear_dist_entry(DistEntry *dep)
cache = dep->cache;
dep->cache = NULL;
-#ifdef DEBUG
- erts_de_links_lock(dep);
- ASSERT(!dep->nlinks);
- ASSERT(!dep->node_links);
- ASSERT(!dep->monitors);
- erts_de_links_unlock(dep);
-#endif
-
erts_mtx_lock(&dep->qlock);
erts_atomic64_set_nob(&dep->in, 0);
@@ -887,8 +852,7 @@ erts_dsig_send_unlink(ErtsDSigData *dsdp, Eterm local, Eterm remote)
/* A local process that's being monitored by a remote one exits. We send:
- {DOP_MONITOR_P_EXIT, Local pid or name, Remote pid, ref, reason},
- which is rather sad as only the ref is needed, no pid's... */
+ {DOP_MONITOR_P_EXIT, Local pid or name, Remote pid, ref, reason} */
int
erts_dsig_send_m_exit(ErtsDSigData *dsdp, Eterm watcher, Eterm watched,
Eterm ref, Eterm reason)
@@ -909,12 +873,6 @@ erts_dsig_send_m_exit(ErtsDSigData *dsdp, Eterm watcher, Eterm watched,
ctl = TUPLE5(&ctl_heap[0], make_small(DOP_MONITOR_P_EXIT),
watched, watcher, ref, reason);
-#ifdef DEBUG
- erts_de_links_lock(dsdp->dep);
- ASSERT(!erts_lookup_monitor(dsdp->dep->monitors, ref));
- erts_de_links_unlock(dsdp->dep);
-#endif
-
res = dsig_send_ctl(dsdp, ctl, 1);
UnUseTmpHeapNoproc(6);
return res;
@@ -953,8 +911,7 @@ erts_dsig_send_monitor(ErtsDSigData *dsdp, Eterm watcher, Eterm watched,
/* A local process monitoring a remote one wants to stop monitoring, either
because of a demonitor bif call or because the local process died. We send
- {DOP_DEMONITOR_P, Local pid, Remote pid or name, ref}, which is once again
- rather redundant as only the ref will be needed on the other side... */
+ {DOP_DEMONITOR_P, Local pid, Remote pid or name, ref} */
int
erts_dsig_send_demonitor(ErtsDSigData *dsdp, Eterm watcher,
Eterm watched, Eterm ref, int force)
@@ -1276,8 +1233,6 @@ int erts_net_message(Port *prt,
Sint type;
Eterm token;
Eterm token_size;
- ErtsMonitor *mon;
- ErtsLink *lnk;
Uint tuple_arity;
int res;
Uint32 connection_id;
@@ -1375,88 +1330,89 @@ int erts_net_message(Port *prt,
token = NIL;
switch (type = unsigned_val(tuple[1])) {
- case DOP_LINK:
+ case DOP_LINK: {
+ ErtsDSigData dsd;
+ int code;
+
if (tuple_arity != 3) {
goto invalid_message;
}
from = tuple[2];
to = tuple[3]; /* local proc to link to */
- if (is_not_pid(from) || is_not_pid(to)) {
- goto invalid_message;
- }
+ if (is_not_external_pid(from))
+ goto invalid_message;
- rp = erts_pid2proc_opt(NULL, 0,
- to, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- if (!rp) {
- /* This is tricky (we MUST force a distributed send) */
- ErtsDSigData dsd;
- int code;
- code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED) {
- code = erts_dsig_send_exit(&dsd, to, from, am_noproc);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- break;
- }
+ if (dep != external_pid_dist_entry(from))
+ goto invalid_message;
- erts_de_links_lock(dep);
- res = erts_add_link(&ERTS_P_LINKS(rp), LINK_PID, from);
+ if (is_external_pid(to)) {
+ if (external_pid_dist_entry(to) != erts_this_dist_entry)
+ goto invalid_message;
+ /* old incarnation of node; reply noproc... */
+ }
+ else if (is_internal_pid(to)) {
+ ErtsLinkData *ldp = erts_link_create(ERTS_LNK_TYPE_DIST_PROC,
+ from, to);
+ ASSERT(ldp->a.other.item == to);
+ ASSERT(eq(ldp->b.other.item, from));
+#ifdef DEBUG
+ code =
+#endif
+ erts_link_dist_insert(&ldp->a, dep->mld);
+ ASSERT(code);
- if (res < 0) {
- /* It was already there! Lets skip the rest... */
- erts_de_links_unlock(dep);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- break;
- }
- lnk = erts_add_or_lookup_link(&(dep->nlinks), LINK_PID, rp->common.id);
- erts_add_link(&(ERTS_LINK_ROOT(lnk)), LINK_PID, from);
- erts_de_links_unlock(dep);
+ if (erts_proc_sig_send_link(NULL, to, &ldp->b))
+ break; /* done */
- if (IS_TRACED_FL(rp, F_TRACE_PROCS))
- trace_proc(NULL, 0, rp, am_getting_linked, from);
+ /* Failed to send signal; cleanup and reply noproc... */
+
+#ifdef DEBUG
+ code =
+#endif
+ erts_link_dist_delete(&ldp->a);
+ ASSERT(code);
+ erts_link_release_both(ldp);
+ }
+
+ code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
+ if (code == ERTS_DSIG_PREP_CONNECTED) {
+ code = erts_dsig_send_exit(&dsd, to, from, am_noproc);
+ ASSERT(code == ERTS_DSIG_SEND_OK);
+ }
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
break;
+ }
case DOP_UNLINK: {
- ErtsDistLinkData dld;
if (tuple_arity != 3) {
goto invalid_message;
}
from = tuple[2];
to = tuple[3];
- if (is_not_pid(from) || is_not_pid(to)) {
+ if (is_not_external_pid(from))
+ goto invalid_message;
+ if (dep != external_pid_dist_entry(from))
goto invalid_message;
- }
-
- rp = erts_pid2proc_opt(NULL, 0,
- to, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- if (!rp)
- break;
-
- lnk = erts_remove_link(&ERTS_P_LINKS(rp), from);
- if (IS_TRACED_FL(rp, F_TRACE_PROCS) && lnk != NULL) {
- trace_proc(NULL, 0, rp, am_getting_unlinked, from);
- }
+ if (is_external_pid(to)
+ && erts_this_dist_entry == external_pid_dist_entry(from))
+ break;
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
+ if (is_not_internal_pid(to))
+ goto invalid_message;
- erts_remove_dist_link(&dld, to, from, dep);
- erts_destroy_dist_link(&dld);
- if (lnk)
- erts_destroy_link(lnk);
+ erts_proc_sig_send_dist_unlink(dep, from, to);
break;
}
case DOP_MONITOR_P: {
/* A remote process wants to monitor us, we get:
{DOP_MONITOR_P, Remote pid, local pid or name, ref} */
- Eterm name;
-
+ Eterm pid, name;
+ ErtsDSigData dsd;
+ int code;
+
if (tuple_arity != 4) {
goto invalid_message;
}
@@ -1465,44 +1421,64 @@ int erts_net_message(Port *prt,
watched = tuple[3]; /* local proc to monitor */
ref = tuple[4];
- if (is_not_ref(ref)) {
+ if (is_not_external_pid(watcher))
+ goto invalid_message;
+ else if (external_pid_dist_entry(watcher) != dep)
+ goto invalid_message;
+
+ if (is_not_ref(ref))
goto invalid_message;
- }
- if (is_atom(watched)) {
- name = watched;
- rp = erts_whereis_process(NULL, 0,
- watched, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- }
- else {
- name = NIL;
- rp = erts_pid2proc_opt(NULL, 0,
- watched, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- }
+ if (is_internal_pid(watched)) {
+ name = NIL;
+ pid = watched;
+ }
+ else if (is_atom(watched)) {
+ name = watched;
+ pid = erts_whereis_name_to_id(NULL, watched);
+ /* if port or undefined; reply noproc... */
+ }
+ else if (is_external_pid(watched)
+ && external_pid_dist_entry(watched) == erts_this_dist_entry) {
+ name = NIL;
+ pid = am_undefined; /* old incarnation; reply noproc... */
+ }
+ else
+ goto invalid_message;
- if (!rp) {
- ErtsDSigData dsd;
- int code;
- code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED) {
- code = erts_dsig_send_m_exit(&dsd, watcher, watched, ref,
- am_noproc);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- }
- else {
- if (is_atom(watched))
- watched = rp->common.id;
- erts_de_links_lock(dep);
- erts_add_monitor(&(dep->monitors), MON_ORIGIN, ref, watched, name);
- erts_add_monitor(&ERTS_P_MONITORS(rp), MON_TARGET, ref, watcher, name);
- erts_de_links_unlock(dep);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- }
+ if (is_internal_pid(pid)) {
+ ErtsMonitorData *mdp;
+ mdp = erts_monitor_create(ERTS_MON_TYPE_DIST_PROC,
+ ref, watcher, pid, name);
- break;
+#ifdef DEBUG
+ code =
+#endif
+ erts_monitor_dist_insert(&mdp->origin, dep->mld);
+ ASSERT(code);
+
+ if (erts_proc_sig_send_monitor(&mdp->target, pid))
+ break; /* done */
+
+ /* Failed to send to local proc; cleanup reply noproc... */
+
+#ifdef DEBUG
+ code =
+#endif
+ erts_monitor_dist_delete(&mdp->origin);
+ ASSERT(code);
+ erts_monitor_release_both(mdp);
+
+ }
+
+ code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
+ if (code == ERTS_DSIG_PREP_CONNECTED) {
+ code = erts_dsig_send_m_exit(&dsd, watcher, watched, ref,
+ am_noproc);
+ ASSERT(code == ERTS_DSIG_SEND_OK);
+ }
+
+ break;
}
case DOP_DEMONITOR_P:
@@ -1513,36 +1489,43 @@ int erts_net_message(Port *prt,
if (tuple_arity != 4) {
goto invalid_message;
}
- /* watcher = tuple[2]; */
- /* watched = tuple[3]; May be an atom in case of monitor name */
+
+ watcher = tuple[2];
+ watched = tuple[3];
ref = tuple[4];
- if(is_not_ref(ref)) {
+ if (is_not_ref(ref)) {
goto invalid_message;
}
- erts_de_links_lock(dep);
- mon = erts_remove_monitor(&(dep->monitors),ref);
- erts_de_links_unlock(dep);
- /* ASSERT(mon != NULL); can happen in case of broken dist message */
- if (mon == NULL) {
- break;
- }
- watched = mon->u.pid;
- erts_destroy_monitor(mon);
- rp = erts_pid2proc_opt(NULL, 0,
- watched, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- if (!rp) {
- break;
- }
- mon = erts_remove_monitor(&ERTS_P_MONITORS(rp), ref);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- ASSERT(mon != NULL);
- if (mon == NULL) {
- break;
- }
- erts_destroy_monitor(mon);
+ if (is_not_external_pid(watcher) || external_pid_dist_entry(watcher) != dep)
+ goto invalid_message;
+
+ if (is_internal_pid(watched))
+ erts_proc_sig_send_dist_demonitor(watched, ref);
+ else if (is_external_pid(watched)
+ && external_pid_dist_entry(watched) == erts_this_dist_entry) {
+ /* old incarnation; ignore it */
+ ;
+ }
+ else if (is_atom(watched)) {
+ ErtsMonLnkDist *mld = dep->mld;
+ ErtsMonitor *mon;
+
+ erts_mtx_lock(&mld->mtx);
+
+ mon = erts_monitor_tree_lookup(mld->orig_name_monitors, ref);
+ if (mon)
+ erts_monitor_tree_delete(&mld->orig_name_monitors, mon);
+
+ erts_mtx_unlock(&mld->mtx);
+
+ if (mon)
+ erts_proc_sig_send_demonitor(mon);
+ }
+ else
+ goto invalid_message;
+
break;
case DOP_REG_SEND_TT:
@@ -1669,68 +1652,36 @@ int erts_net_message(Port *prt,
/* We are monitoring a process on the remote node which dies, we get
{DOP_MONITOR_P_EXIT, Remote pid or name, Local pid, ref, reason} */
-
- DeclareTmpHeapNoproc(lhp,3);
- Eterm sysname;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_MSG_SEND|ERTS_PROC_LOCK_LINK;
-
if (tuple_arity != 5) {
goto invalid_message;
}
- /* watched = tuple[2]; */ /* remote proc which died */
- /* watcher = tuple[3]; */
+ watched = tuple[2]; /* remote proc or name which died */
+ watcher = tuple[3];
ref = tuple[4];
reason = tuple[5];
- if(is_not_ref(ref)) {
+ if (is_not_ref(ref))
goto invalid_message;
- }
-
- erts_de_links_lock(dep);
- sysname = dep->sysname;
- mon = erts_remove_monitor(&(dep->monitors), ref);
- /*
- * If demonitor was performed at the same time as the
- * monitored process exits, monitoring side will have
- * removed info about monitor. In this case, do nothing
- * and everything will be as it should.
- */
- erts_de_links_unlock(dep);
- if (mon == NULL) {
- break;
- }
- rp = erts_pid2proc(NULL, 0, mon->u.pid, rp_locks);
- erts_destroy_monitor(mon);
- if (rp == NULL) {
- break;
- }
+ if (is_not_external_pid(watched) && is_not_atom(watched))
+ goto invalid_message;
- mon = erts_remove_monitor(&ERTS_P_MONITORS(rp), ref);
+ if (is_not_internal_pid(watcher)) {
+ if (!is_external_pid(watcher))
+ goto invalid_message;
+ if (erts_this_dist_entry == external_pid_dist_entry(watcher))
+ break;
+ goto invalid_message;
+ }
- if (mon == NULL) {
- erts_proc_unlock(rp, rp_locks);
- break;
- }
- UseTmpHeapNoproc(3);
-
- watched = (is_not_nil(mon->name)
- ? TUPLE2(&lhp[0], mon->name, sysname)
- : mon->u.pid);
-
- erts_queue_monitor_message(rp, &rp_locks,
- ref, am_process, watched, reason);
- erts_proc_unlock(rp, rp_locks);
- erts_destroy_monitor(mon);
- UnUseTmpHeapNoproc(3);
+ erts_proc_sig_send_dist_monitor_down(dep, ref, watched,
+ watcher, reason);
break;
}
case DOP_EXIT_TT:
case DOP_EXIT: {
- ErtsDistLinkData dld;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCKS_XSIG_SEND;
/* 'from', which 'to' is linked to, died */
if (type == DOP_EXIT) {
if (tuple_arity != 4) {
@@ -1750,56 +1701,19 @@ int erts_net_message(Port *prt,
token = tuple[4];
reason = tuple[5];
}
- if (is_not_pid(from) || is_not_internal_pid(to)) {
+ if (is_not_external_pid(from)
+ || dep != external_pid_dist_entry(from)
+ || is_not_internal_pid(to)) {
goto invalid_message;
}
- rp = erts_pid2proc(NULL, 0, to, rp_locks);
- if (!rp)
- lnk = NULL;
- else {
- lnk = erts_remove_link(&ERTS_P_LINKS(rp), from);
-
- /* If lnk == NULL, we have unlinked on this side, i.e.
- * ignore exit.
- */
- if (lnk) {
- int xres;
-#if 0
- /* Arndt: Maybe it should never be 'kill', but it can be,
- namely when a linked process does exit(kill). Until we know
- whether that is incorrect and what should happen instead,
- we leave the assertion out. */
- ASSERT(reason != am_kill); /* should never be kill (killed) */
-#endif
- xres = erts_send_exit_signal(NULL,
- from,
- rp,
- &rp_locks,
- reason,
- token,
- NULL,
- ERTS_XSIG_FLG_IGN_KILL);
- if (xres >= 0 && IS_TRACED_FL(rp, F_TRACE_PROCS)) {
- /* We didn't exit the process and it is traced */
- if (rp_locks & ERTS_PROC_LOCKS_XSIG_SEND) {
- erts_proc_unlock(rp, ERTS_PROC_LOCKS_XSIG_SEND);
- rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND;
- }
- trace_proc(NULL, 0, rp, am_getting_unlinked, from);
- }
- }
- erts_proc_unlock(rp, rp_locks);
- }
- erts_remove_dist_link(&dld, to, from, dep);
- if (lnk)
- erts_destroy_link(lnk);
- erts_destroy_dist_link(&dld);
+ erts_proc_sig_send_dist_link_exit(dep,
+ from, to,
+ reason, token);
break;
}
case DOP_EXIT2_TT:
- case DOP_EXIT2: {
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
+ case DOP_EXIT2:
/* 'from' is send an exit signal to 'to' */
if (type == DOP_EXIT2) {
if (tuple_arity != 4) {
@@ -1821,20 +1735,10 @@ int erts_net_message(Port *prt,
if (is_not_pid(from) || is_not_internal_pid(to)) {
goto invalid_message;
}
- rp = erts_pid2proc(NULL, 0, to, rp_locks);
- if (rp) {
- (void) erts_send_exit_signal(NULL,
- from,
- rp,
- &rp_locks,
- reason,
- token,
- NULL,
- 0);
- erts_proc_unlock(rp, rp_locks);
- }
+
+ erts_proc_sig_send_exit(NULL, from, to, reason, token, 0);
break;
- }
+
case DOP_GROUP_LEADER:
if (tuple_arity != 3) {
goto invalid_message;
@@ -1845,11 +1749,7 @@ int erts_net_message(Port *prt,
goto invalid_message;
}
- rp = erts_pid2proc(NULL, 0, to, ERTS_PROC_LOCK_MAIN);
- if (!rp)
- break;
- rp->group_leader = STORE_NC_IN_PROC(rp, from);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+ (void) erts_proc_sig_send_group_leader(NULL, to, from, NIL);
break;
default:
@@ -2989,57 +2889,55 @@ static void doit_print_monitor_info(ErtsMonitor *mon, void *vptdp)
{
fmtfn_t to = ((struct print_to_data *) vptdp)->to;
void *arg = ((struct print_to_data *) vptdp)->arg;
- Process *rp;
- ErtsMonitor *rmon;
- rp = erts_proc_lookup(mon->u.pid);
- if (!rp || (rmon = erts_lookup_monitor(ERTS_P_MONITORS(rp), mon->ref)) == NULL) {
- erts_print(to, arg, "Warning, stray monitor for: %T\n", mon->u.pid);
- } else if (mon->type == MON_ORIGIN) {
- /* Local pid is being monitored */
+ ErtsMonitorDataExtended *mdep;
+
+ ASSERT(mon->flags & ERTS_ML_FLG_EXTENDED);
+
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+
+ ASSERT(mdep->dist);
+
+ if (erts_monitor_is_origin(mon)) {
erts_print(to, arg, "Remotely monitored by: %T %T\n",
- mon->u.pid, rmon->u.pid);
- } else {
- erts_print(to, arg, "Remote monitoring: %T ", mon->u.pid);
- if (is_not_atom(rmon->u.pid))
- erts_print(to, arg, "%T\n", rmon->u.pid);
- else
- erts_print(to, arg, "{%T, %T}\n",
- rmon->name,
- rmon->u.pid); /* which in this case is the
- remote system name... */
+ mon->other.item, mdep->md.target.other.item);
+ }
+ else {
+ erts_print(to, arg, "Remote monitoring: %T ", mon->other.item);
+ if (mon->flags & ERTS_ML_FLG_NAME)
+ erts_print(to, arg, "{%T, %T}\n", mdep->u.name, mdep->dist->nodename);
+ else
+ erts_print(to, arg, "%T\n", mdep->md.origin.other.item);
}
}
-static void print_monitor_info(fmtfn_t to, void *arg, ErtsMonitor *mon)
+static void print_monitor_info(fmtfn_t to, void *arg, DistEntry *dep)
{
struct print_to_data ptd = {to, arg};
- erts_doforall_monitors(mon,&doit_print_monitor_info,&ptd);
-}
-
-typedef struct {
- struct print_to_data *ptdp;
- Eterm from;
-} PrintLinkContext;
-
-static void doit_print_link_info2(ErtsLink *lnk, void *vpplc)
-{
- PrintLinkContext *pplc = (PrintLinkContext *) vpplc;
- erts_print(pplc->ptdp->to, pplc->ptdp->arg, "Remote link: %T %T\n",
- pplc->from, lnk->pid);
+ if (dep->mld) {
+ erts_monitor_list_foreach(dep->mld->monitors,
+ doit_print_monitor_info,
+ (void *) &ptd);
+ erts_monitor_tree_foreach(dep->mld->orig_name_monitors,
+ doit_print_monitor_info,
+ (void *) &ptd);
+ }
}
static void doit_print_link_info(ErtsLink *lnk, void *vptdp)
{
- if (is_internal_pid(lnk->pid) && erts_proc_lookup(lnk->pid)) {
- PrintLinkContext plc = {(struct print_to_data *) vptdp, lnk->pid};
- erts_doforall_links(ERTS_LINK_ROOT(lnk), &doit_print_link_info2, &plc);
- }
+ struct print_to_data *ptdp = vptdp;
+ ErtsLink *lnk2 = erts_link_to_other(lnk, NULL);
+ erts_print(ptdp->to, ptdp->arg, "Remote link: %T %T\n",
+ lnk2->other.item, lnk->other.item);
}
-static void print_link_info(fmtfn_t to, void *arg, ErtsLink *lnk)
+static void print_link_info(fmtfn_t to, void *arg, DistEntry *dep)
{
struct print_to_data ptd = {to, arg};
- erts_doforall_links(lnk, &doit_print_link_info, (void *) &ptd);
+ if (dep->mld)
+ erts_link_list_foreach(dep->mld->links,
+ doit_print_link_info,
+ (void *) &ptd);
}
typedef struct {
@@ -3047,23 +2945,6 @@ typedef struct {
Eterm sysname;
} PrintNodeLinkContext;
-
-static void doit_print_nodelink_info(ErtsLink *lnk, void *vpcontext)
-{
- PrintNodeLinkContext *pcontext = vpcontext;
-
- if (is_internal_pid(lnk->pid) && erts_proc_lookup(lnk->pid))
- erts_print(pcontext->ptd.to, pcontext->ptd.arg,
- "Remote monitoring: %T %T\n", lnk->pid, pcontext->sysname);
-}
-
-static void print_nodelink_info(fmtfn_t to, void *arg, ErtsLink *lnk, Eterm sysname)
-{
- PrintNodeLinkContext context = {{to, arg}, sysname};
- erts_doforall_links(lnk, &doit_print_nodelink_info, &context);
-}
-
-
static int
info_dist_entry(fmtfn_t to, void *arg, DistEntry *dep, int visible, int connected)
{
@@ -3094,8 +2975,8 @@ info_dist_entry(fmtfn_t to, void *arg, DistEntry *dep, int visible, int connecte
erts_print(to, arg, "Name: %T", dep->sysname);
erts_print(to, arg, "\n");
if (!connected && is_nil(dep->cid)) {
- if (dep->nlinks) {
- erts_print(to, arg, "Error: Got links to not connected node:%T\n",
+ if (dep->mld) {
+ erts_print(to, arg, "Error: Got links/monitors to not connected node:%T\n",
dep->sysname);
}
return 0;
@@ -3104,9 +2985,8 @@ info_dist_entry(fmtfn_t to, void *arg, DistEntry *dep, int visible, int connecte
erts_print(to, arg, "Controller: %T\n", dep->cid, to);
erts_print_node_info(to, arg, dep->sysname, NULL, NULL);
- print_monitor_info(to, arg, dep->monitors);
- print_link_info(to, arg, dep->nlinks);
- print_nodelink_info(to, arg, dep->node_links, dep->sysname);
+ print_monitor_info(to, arg, dep);
+ print_link_info(to, arg, dep);
return 0;
@@ -3193,8 +3073,7 @@ BIF_RETTYPE setnode_2(BIF_ALIST_2)
goto error;
/* Check that all trap functions are defined !! */
- if (dmonitor_node_trap->addressv[0] == NULL ||
- dmonitor_p_trap->addressv[0] == NULL) {
+ if (dmonitor_node_trap->addressv[0] == NULL) {
goto error;
}
@@ -3582,25 +3461,16 @@ static Sint abort_connection(DistEntry* dep, Uint32 conn_id)
kill_connection(dep);
}
else if (dep->state == ERTS_DE_STATE_PENDING) {
- NetExitsContext nec = {dep};
- ErtsLink *nlinks;
- ErtsLink *node_links;
- ErtsMonitor *monitors;
ErtsAtomCache *cache;
ErtsDistOutputBuf *obuf;
ErtsProcList *resume_procs;
Sint reds = 0;
+ ErtsMonLnkDist *mld;
ASSERT(is_nil(dep->cid));
- erts_de_links_lock(dep);
- monitors = dep->monitors;
- nlinks = dep->nlinks;
- node_links = dep->node_links;
- dep->monitors = NULL;
- dep->nlinks = NULL;
- dep->node_links = NULL;
- erts_de_links_unlock(dep);
+ mld = dep->mld;
+ dep->mld = NULL;
cache = dep->cache;
dep->cache = NULL;
@@ -3619,9 +3489,8 @@ static Sint abort_connection(DistEntry* dep, Uint32 conn_id)
erts_de_rwunlock(dep);
- erts_sweep_monitors(monitors, &doit_monitor_net_exits, &nec);
- erts_sweep_links(nlinks, &doit_link_net_exits, &nec);
- erts_sweep_links(node_links, &doit_node_link_net_exits, &nec);
+ schedule_con_monitor_link_cleanup(mld, THE_NON_VALUE,
+ THE_NON_VALUE, THE_NON_VALUE);
if (resume_procs) {
int resumed = erts_resume_processes(resume_procs);
@@ -3861,8 +3730,8 @@ BIF_RETTYPE is_alive_0(BIF_ALIST_0)
static BIF_RETTYPE
monitor_node(Process* p, Eterm Node, Eterm Bool, Eterm Options)
{
- DistEntry *dep;
- ErtsLink *lnk;
+ BIF_RETTYPE ret;
+ DistEntry *dep = NULL;
Eterm l;
int async_connect = 1;
@@ -3881,33 +3750,71 @@ monitor_node(Process* p, Eterm Node, Eterm Bool, Eterm Options)
if (l != NIL) {
BIF_ERROR(p, BADARG);
}
+ if (l != NIL)
+ goto badarg;
- if (is_not_atom(Node) ||
- ((Bool != am_true) && (Bool != am_false)) ||
- ((erts_this_node->sysname == am_Noname)
- && (Node != erts_this_node->sysname))) {
- BIF_ERROR(p, BADARG);
+ if (is_not_atom(Node))
+ goto badarg;
+
+ if (erts_this_node->sysname == am_Noname && Node != am_Noname)
+ goto badarg;
+
+ switch (Bool) {
+
+ case am_false: {
+ ErtsMonitor *mon;
+ /*
+ * Before OTP-21, monitor_node(Node, false) triggered
+ * auto-connect and a 'nodedown' message if that failed.
+ * Now it's a simple no-op which feels more reasonable.
+ */
+ mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(p), Node);
+ if (mon) {
+ ErtsMonitorDataExtended *mdep;
+ ASSERT(erts_monitor_is_origin(mon));
+
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+
+ ASSERT((mdep->u.refc > 0));
+ if (--mdep->u.refc == 0) {
+ if (!mdep->uptr.node_monitors)
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(p), mon);
+ else {
+ ErtsMonitor *sub_mon;
+ ErtsMonitorDataExtended *sub_mdep;
+ sub_mon = erts_monitor_list_last(mdep->uptr.node_monitors);
+ erts_monitor_list_delete(&mdep->uptr.node_monitors, sub_mon);
+ sub_mon->flags &= ~ERTS_ML_FLG_IN_SUBTABLE;
+ sub_mdep = ((ErtsMonitorDataExtended *)
+ erts_monitor_to_data(sub_mon));
+ sub_mdep->uptr.node_monitors = mdep->uptr.node_monitors;
+ mdep->uptr.node_monitors = NULL;
+ erts_monitor_tree_replace(&ERTS_P_MONITORS(p), mon, sub_mon);
+ }
+ if (erts_monitor_dist_delete(&mdep->md.target))
+ erts_monitor_release_both((ErtsMonitorData *) mdep);
+ else
+ erts_monitor_release(mon);
+ }
+ }
+ break;
}
- if (Bool == am_true) {
+ case am_true: {
ErtsDSigData dsd;
dsd.node = Node;
+
dep = erts_find_or_insert_dist_entry(Node);
if (dep == erts_this_dist_entry)
- goto done;
-
- erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
+ break;
switch (erts_dsig_prepare(&dsd, dep, p,
- (ERTS_PROC_LOCK_MAIN | ERTS_PROC_LOCK_LINK),
+ ERTS_PROC_LOCK_MAIN,
ERTS_DSP_RLOCK, 0, async_connect)) {
case ERTS_DSIG_PREP_NOT_ALIVE:
case ERTS_DSIG_PREP_NOT_CONNECTED:
/* Trap to either send 'nodedown' or do passive connection attempt */
- trap:
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- erts_deref_dist_entry(dep);
- BIF_TRAP3(dmonitor_node_trap, p, Node, Bool, Options);
+ goto do_trap;
case ERTS_DSIG_PREP_PENDING:
if (!async_connect) {
/*
@@ -3915,68 +3822,87 @@ monitor_node(Process* p, Eterm Node, Eterm Bool, Eterm Options)
* to ensure passive connection attempt
*/
erts_de_runlock(dep);
- goto trap;
+ goto do_trap;
}
/*fall through*/
- case ERTS_DSIG_PREP_CONNECTED:
- erts_de_links_lock(dep);
- erts_de_runlock(dep);
- lnk = erts_add_or_lookup_link(&(dep->node_links), LINK_NODE,
- p->common.id);
- ++ERTS_LINK_REFC(lnk);
- lnk = erts_add_or_lookup_link(&ERTS_P_LINKS(p), LINK_NODE, Node);
- ++ERTS_LINK_REFC(lnk);
- erts_de_links_unlock(dep);
+ case ERTS_DSIG_PREP_CONNECTED: {
+ ErtsMonitor *mon;
+ ErtsMonitorDataExtended *mdep;
+ int created;
+
+ mon = erts_monitor_tree_lookup_create(&ERTS_P_MONITORS(p),
+ &created,
+ ERTS_MON_TYPE_NODE,
+ p->common.id,
+ Node);
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+ if (created) {
+#ifdef DEBUG
+ int inserted =
+#endif
+ erts_monitor_dist_insert(&mdep->md.target, dep->mld);
+ ASSERT(inserted);
+ ASSERT(mdep->dist->connection_id == dep->connection_id);
+ }
+ else if (mdep->dist->connection_id != dep->connection_id) {
+ ErtsMonitorDataExtended *mdep2;
+ ErtsMonitor *mon2;
+#ifdef DEBUG
+ int inserted;
+#endif
+ mdep2 = ((ErtsMonitorDataExtended *)
+ erts_monitor_create(ERTS_MON_TYPE_NODE, NIL,
+ p->common.id, Node, NIL));
+ mon2 = &mdep2->md.origin;
+#ifdef DEBUG
+ inserted =
+#endif
+ erts_monitor_dist_insert(&mdep->md.target, dep->mld);
+ ASSERT(inserted);
+ ASSERT(mdep2->dist->connection_id == dep->connection_id);
+
+ mdep2->uptr.node_monitors = mdep->uptr.node_monitors;
+ mdep->uptr.node_monitors = NULL;
+ erts_monitor_tree_replace(&ERTS_P_MONITORS(p), mon, mon2);
+ erts_monitor_list_insert(&mdep2->uptr.node_monitors, mon);
+ mon->flags |= ERTS_ML_FLG_IN_SUBTABLE;
+ mdep = mdep2;
+ }
+
+ mdep->u.refc++;
+
break;
+ }
+
default:
ERTS_ASSERT(! "Invalid dsig prepare result");
}
- erts_deref_dist_entry(dep);
- }
- else { /* Bool == false */
- dep = erts_sysname_to_connected_dist_entry(Node);
- if (!dep) {
- /*
- * Before OTP-21 this case triggered auto-connect
- * and a 'nodedown' message if that failed.
- * Now it's a simple no-op which feels more reasonable.
- */
- BIF_RET(am_true);
- }
- if (dep == erts_this_dist_entry)
- goto done;
- erts_proc_lock(p, ERTS_PROC_LOCK_LINK);
- erts_de_rlock(dep);
- if (dep->state == ERTS_DE_STATE_IDLE) {
- ASSERT(!dep->node_links);
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
- erts_de_runlock(dep);
- goto done;
- }
- erts_de_links_lock(dep);
erts_de_runlock(dep);
- lnk = erts_lookup_link(dep->node_links, p->common.id);
- if (lnk != NULL) {
- if ((--ERTS_LINK_REFC(lnk)) == 0) {
- erts_destroy_link(erts_remove_link(&(dep->node_links),
- p->common.id));
- }
- }
- lnk = erts_lookup_link(ERTS_P_LINKS(p), Node);
- if (lnk != NULL) {
- if ((--ERTS_LINK_REFC(lnk)) == 0) {
- erts_destroy_link(erts_remove_link(&ERTS_P_LINKS(p),
- Node));
- }
- }
- erts_de_links_unlock(dep);
+
+ break;
}
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+ default:
+ goto badarg;
+ }
- done:
- BIF_RET(am_true);
+ ERTS_BIF_PREP_RET(ret, am_true);
+
+do_return:
+
+ if (dep)
+ erts_deref_dist_entry(dep);
+
+ return ret;
+
+do_trap:
+ ERTS_BIF_PREP_TRAP3(ret, dmonitor_node_trap, p, Node, Bool, Options);
+ goto do_return;
+
+badarg:
+ ERTS_BIF_PREP_ERROR(ret, p, BADARG);
+ goto do_return;
}
BIF_RETTYPE monitor_node_3(BIF_ALIST_3)
@@ -4027,18 +3953,9 @@ BIF_RETTYPE net_kernel_dflag_unicode_io_1(BIF_ALIST_1)
#define ERTS_NODES_MON_OPT_TYPES \
(ERTS_NODES_MON_OPT_TYPE_VISIBLE|ERTS_NODES_MON_OPT_TYPE_HIDDEN)
-typedef struct ErtsNodesMonitor_ ErtsNodesMonitor;
-struct ErtsNodesMonitor_ {
- ErtsNodesMonitor *prev;
- ErtsNodesMonitor *next;
- Process *proc;
- Uint16 opts;
- Uint16 no;
-};
-
static erts_mtx_t nodes_monitors_mtx;
-static ErtsNodesMonitor *nodes_monitors;
-static ErtsNodesMonitor *nodes_monitors_end;
+static ErtsMonitor *nodes_monitors;
+static Uint no_nodes_monitors;
/*
* Nodes monitors are stored in a double linked list. 'nodes_monitors'
@@ -4057,109 +3974,169 @@ init_nodes_monitors(void)
erts_mtx_init(&nodes_monitors_mtx, "nodes_monitors", NIL,
ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
nodes_monitors = NULL;
- nodes_monitors_end = NULL;
+ no_nodes_monitors = 0;
}
-static ERTS_INLINE Uint
-nodes_mon_msg_sz(ErtsNodesMonitor *nmp, Eterm what, Eterm reason)
+Eterm
+erts_monitor_nodes(Process *c_p, Eterm on, Eterm olist)
{
- Uint sz;
- if (!nmp->opts) {
- sz = 3;
- }
- else {
- sz = 0;
+ Eterm key, old_value, opts_list = olist;
+ Uint opts = (Uint) 0;
- if (nmp->opts & ERTS_NODES_MON_OPT_TYPES)
- sz += 2 + 3;
+ ASSERT(c_p);
+ ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN);
- if (what == am_nodedown
- && (nmp->opts & ERTS_NODES_MON_OPT_DOWN_REASON)) {
- if (is_not_immed(reason))
- sz += size_object(reason);
- sz += 2 + 3;
+ if (on != am_true && on != am_false)
+ return THE_NON_VALUE;
+
+ if (is_not_nil(opts_list)) {
+ int all = 0, visible = 0, hidden = 0;
+
+ while (is_list(opts_list)) {
+ Eterm *cp = list_val(opts_list);
+ Eterm opt = CAR(cp);
+ opts_list = CDR(cp);
+ if (opt == am_nodedown_reason)
+ opts |= ERTS_NODES_MON_OPT_DOWN_REASON;
+ else if (is_tuple(opt)) {
+ Eterm* tp = tuple_val(opt);
+ if (arityval(tp[0]) != 2)
+ return THE_NON_VALUE;
+ switch (tp[1]) {
+ case am_node_type:
+ switch (tp[2]) {
+ case am_visible:
+ if (hidden || all)
+ return THE_NON_VALUE;
+ opts |= ERTS_NODES_MON_OPT_TYPE_VISIBLE;
+ visible = 1;
+ break;
+ case am_hidden:
+ if (visible || all)
+ return THE_NON_VALUE;
+ opts |= ERTS_NODES_MON_OPT_TYPE_HIDDEN;
+ hidden = 1;
+ break;
+ case am_all:
+ if (visible || hidden)
+ return THE_NON_VALUE;
+ opts |= ERTS_NODES_MON_OPT_TYPES;
+ all = 1;
+ break;
+ default:
+ return THE_NON_VALUE;
+ }
+ break;
+ default:
+ return THE_NON_VALUE;
+ }
+ }
+ else {
+ return THE_NON_VALUE;
+ }
}
- sz += 4;
+ if (is_not_nil(opts_list))
+ return THE_NON_VALUE;
}
- return sz;
+
+ key = make_small(opts);
+
+ if (on == am_true) {
+ ErtsMonitorDataExtended *mdep;
+ ErtsMonitor *omon;
+ int created;
+ omon = erts_monitor_tree_lookup_create(&ERTS_P_MONITORS(c_p),
+ &created,
+ ERTS_MON_TYPE_NODES,
+ c_p->common.id,
+ key);
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(omon);
+ if (created) {
+ erts_mtx_lock(&nodes_monitors_mtx);
+ no_nodes_monitors++;
+ erts_monitor_list_insert(&nodes_monitors, &mdep->md.target);
+ erts_mtx_unlock(&nodes_monitors_mtx);
+ }
+ old_value = mdep->u.refc;
+ mdep->u.refc++;
+ }
+ else {
+ ErtsMonitorDataExtended *mdep;
+ ErtsMonitor *omon;
+ omon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p), key);
+ if (!omon)
+ old_value = 0;
+ else {
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(omon);
+ old_value = mdep->u.refc;
+ ASSERT(mdep->u.refc > 0);
+ erts_mtx_lock(&nodes_monitors_mtx);
+ ASSERT(no_nodes_monitors > 0);
+ no_nodes_monitors--;
+ ASSERT(erts_monitor_is_in_table(&mdep->md.target));
+ erts_monitor_list_delete(&nodes_monitors, &mdep->md.target);
+ erts_mtx_unlock(&nodes_monitors_mtx);
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p), omon);
+ erts_monitor_release_both((ErtsMonitorData *) mdep);
+ }
+ }
+
+ return erts_make_integer(old_value, c_p);
}
-static ERTS_INLINE void
-send_nodes_mon_msg(Process *rp,
- ErtsProcLocks *rp_locksp,
- ErtsNodesMonitor *nmp,
- Eterm node,
- Eterm what,
- Eterm type,
- Eterm reason,
- Uint sz)
+void
+erts_monitor_nodes_delete(ErtsMonitor *omon)
{
- Eterm msg;
- Eterm *hp;
- ErtsMessage *mp;
- ErlOffHeap *ohp;
-#ifdef DEBUG
- Eterm *hend;
-#endif
+ ErtsMonitorData *mdp;
- mp = erts_alloc_message_heap(rp, rp_locksp, sz, &hp, &ohp);
-#ifdef DEBUG
- hend = hp + sz;
-#endif
+ ASSERT(omon->type == ERTS_MON_TYPE_NODES);
+ ASSERT(erts_monitor_is_origin(omon));
- if (!nmp->opts) {
- msg = TUPLE2(hp, what, node);
-#ifdef DEBUG
- hp += 3;
-#endif
- }
- else {
- Eterm tup;
- Eterm info = NIL;
+ mdp = erts_monitor_to_data(omon);
- if (nmp->opts & (ERTS_NODES_MON_OPT_TYPE_VISIBLE
- | ERTS_NODES_MON_OPT_TYPE_HIDDEN)) {
+ erts_mtx_lock(&nodes_monitors_mtx);
+ ASSERT(erts_monitor_is_in_table(&mdp->target));
+ ASSERT(no_nodes_monitors > 0);
+ no_nodes_monitors--;
+ erts_monitor_list_delete(&nodes_monitors, &mdp->target);
+ erts_mtx_unlock(&nodes_monitors_mtx);
+ erts_monitor_release_both(mdp);
+}
- tup = TUPLE2(hp, am_node_type, type);
- hp += 3;
- info = CONS(hp, tup, info);
- hp += 2;
- }
+typedef struct {
+ Eterm pid;
+ Eterm options;
+} ErtsNodesMonitorData;
- if (what == am_nodedown
- && (nmp->opts & ERTS_NODES_MON_OPT_DOWN_REASON)) {
- Eterm rsn_cpy;
-
- if (is_immed(reason))
- rsn_cpy = reason;
- else {
- Eterm rsn_sz = size_object(reason);
- rsn_cpy = copy_struct(reason, rsn_sz, &hp, ohp);
- }
+typedef struct {
+ ErtsNodesMonitorData *nmdp;
+ Uint i;
+} ErtsNodesMonitorContext;
- tup = TUPLE2(hp, am_nodedown_reason, rsn_cpy);
- hp += 3;
- info = CONS(hp, tup, info);
- hp += 2;
- }
+static void
+save_nodes_monitor(ErtsMonitor *mon, void *vctxt)
+{
+ ErtsNodesMonitorContext *ctxt = vctxt;
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
- msg = TUPLE3(hp, what, node, info);
-#ifdef DEBUG
- hp += 4;
-#endif
- }
+ ASSERT(erts_monitor_is_target(mon));
+ ASSERT(mon->type == ERTS_MON_TYPE_NODES);
+
+ ctxt->nmdp[ctxt->i].pid = mon->other.item;
+ ctxt->nmdp[ctxt->i].options = mdp->origin.other.item;
- ASSERT(hend == hp);
- erts_queue_message(rp, *rp_locksp, mp, msg, am_system);
+ ctxt->i++;
}
static void
send_nodes_mon_msgs(Process *c_p, Eterm what, Eterm node, Eterm type, Eterm reason)
{
- ErtsNodesMonitor *nmp;
- ErtsProcLocks rp_locks = 0; /* Init to shut up false warning */
- Process *rp = NULL;
+ Uint opts;
+ Uint i, no, reason_size;
+ ErtsNodesMonitorData def_buf[100];
+ ErtsNodesMonitorData *nmdp = &def_buf[0];
+ ErtsNodesMonitorContext ctxt;
ASSERT(is_immed(what));
ASSERT(is_immed(node));
@@ -4180,31 +4157,44 @@ send_nodes_mon_msgs(Process *c_p, Eterm what, Eterm node, Eterm type, Eterm reas
}
#endif
- ERTS_LC_ASSERT(!c_p
- || (erts_proc_lc_my_proc_locks(c_p)
- == ERTS_PROC_LOCK_MAIN));
+ ctxt.i = 0;
+
+ reason_size = is_immed(reason) ? 0 : size_object(reason);
+
erts_mtx_lock(&nodes_monitors_mtx);
+ if (no_nodes_monitors > sizeof(def_buf)/sizeof(def_buf[0]))
+ nmdp = erts_alloc(ERTS_ALC_T_TMP,
+ no_nodes_monitors*sizeof(ErtsNodesMonitorData));
+ ctxt.nmdp = nmdp;
+ erts_monitor_list_foreach(nodes_monitors,
+ save_nodes_monitor,
+ (void *) &ctxt);
+
+ ASSERT(ctxt.i == no_nodes_monitors);
+ no = no_nodes_monitors;
- for (nmp = nodes_monitors; nmp; nmp = nmp->next) {
- int i;
- Uint16 no;
- Uint sz;
+ erts_mtx_unlock(&nodes_monitors_mtx);
- ASSERT(nmp->proc != NULL);
+ for (i = 0; i < no; i++) {
+ Eterm tmp_heap[3+2+3+2+4 /* max need */];
+ Eterm *hp, msg;
+ Uint hsz;
- if (!nmp->opts) {
+ ASSERT(is_small(nmdp[i].options));
+ opts = (Uint) signed_val(nmdp[i].options);
+ if (!opts) {
if (type != am_visible)
continue;
}
else {
switch (type) {
case am_hidden:
- if (!(nmp->opts & ERTS_NODES_MON_OPT_TYPE_HIDDEN))
+ if (!(opts & ERTS_NODES_MON_OPT_TYPE_HIDDEN))
continue;
break;
case am_visible:
- if ((nmp->opts & ERTS_NODES_MON_OPT_TYPES)
- && !(nmp->opts & ERTS_NODES_MON_OPT_TYPE_VISIBLE))
+ if ((opts & ERTS_NODES_MON_OPT_TYPES)
+ && !(opts & ERTS_NODES_MON_OPT_TYPE_VISIBLE))
continue;
break;
default:
@@ -4212,342 +4202,162 @@ send_nodes_mon_msgs(Process *c_p, Eterm what, Eterm node, Eterm type, Eterm reas
}
}
- if (rp != nmp->proc) {
- if (rp) {
- if (rp == c_p)
- rp_locks &= ~ERTS_PROC_LOCK_MAIN;
- erts_proc_unlock(rp, rp_locks);
- }
+ hsz = 0;
+ hp = &tmp_heap[0];
- rp = nmp->proc;
- rp_locks = 0;
- if (rp == c_p)
- rp_locks |= ERTS_PROC_LOCK_MAIN;
- }
-
- ASSERT(rp);
-
- sz = nodes_mon_msg_sz(nmp, what, reason);
+ if (!opts) {
+ msg = TUPLE2(hp, what, node);
+ hp += 3;
+ }
+ else {
+ Eterm tup;
+ Eterm info = NIL;
- for (i = 0, no = nmp->no; i < no; i++)
- send_nodes_mon_msg(rp,
- &rp_locks,
- nmp,
- node,
- what,
- type,
- reason,
- sz);
- }
+ if (opts & (ERTS_NODES_MON_OPT_TYPE_VISIBLE
+ | ERTS_NODES_MON_OPT_TYPE_HIDDEN)) {
- if (rp) {
- if (rp == c_p)
- rp_locks &= ~ERTS_PROC_LOCK_MAIN;
- erts_proc_unlock(rp, rp_locks);
- }
+ tup = TUPLE2(hp, am_node_type, type);
+ hp += 3;
+ info = CONS(hp, tup, info);
+ hp += 2;
+ }
- erts_mtx_unlock(&nodes_monitors_mtx);
-}
+ if (what == am_nodedown
+ && (opts & ERTS_NODES_MON_OPT_DOWN_REASON)) {
+ hsz += reason_size;
+ tup = TUPLE2(hp, am_nodedown_reason, reason);
+ hp += 3;
+ info = CONS(hp, tup, info);
+ hp += 2;
+ }
-static Eterm
-insert_nodes_monitor(Process *c_p, Uint32 opts)
-{
- Uint16 no = 1;
- Eterm res = am_false;
- ErtsNodesMonitor *xnmp, *nmp;
+ msg = TUPLE3(hp, what, node, info);
+ hp += 4;
+ }
- ERTS_LC_ASSERT(erts_lc_mtx_is_locked(&nodes_monitors_mtx));
- ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) & ERTS_PROC_LOCK_MAIN);
+ ASSERT(hp - &tmp_heap[0] <= sizeof(tmp_heap)/sizeof(tmp_heap[0]));
- xnmp = c_p->nodes_monitors;
- if (xnmp) {
- ASSERT(!xnmp->prev || xnmp->prev->proc != c_p);
+ hsz += hp - &tmp_heap[0];
- while (1) {
- ASSERT(xnmp->proc == c_p);
- if (xnmp->opts == opts)
- break;
- if (!xnmp->next || xnmp->next->proc != c_p)
- break;
- xnmp = xnmp->next;
- }
- ASSERT(xnmp);
- ASSERT(xnmp->proc == c_p);
- ASSERT(xnmp->opts == opts
- || !xnmp->next
- || xnmp->next->proc != c_p);
-
- if (xnmp->opts != opts)
- goto alloc_new;
- else {
- res = am_true;
- no = xnmp->no++;
- if (!xnmp->no) {
- /*
- * 'no' wrapped; transfer all prevous monitors to new
- * element (which will be the next element in the list)
- * and set this to one...
- */
- xnmp->no = 1;
- goto alloc_new;
- }
- }
+ erts_proc_sig_send_persistent_monitor_msg(ERTS_MON_TYPE_NODES,
+ nmdp[i].options,
+ am_system,
+ nmdp[i].pid,
+ msg,
+ hsz);
}
- else {
- alloc_new:
- nmp = erts_alloc(ERTS_ALC_T_NODES_MON, sizeof(ErtsNodesMonitor));
- nmp->proc = c_p;
- nmp->opts = opts;
- nmp->no = no;
-
- if (xnmp) {
- ASSERT(nodes_monitors);
- ASSERT(c_p->nodes_monitors);
- nmp->next = xnmp->next;
- nmp->prev = xnmp;
- xnmp->next = nmp;
- if (nmp->next) {
- ASSERT(nodes_monitors_end != xnmp);
- ASSERT(nmp->next->prev == xnmp);
- nmp->next->prev = nmp;
- }
- else {
- ASSERT(nodes_monitors_end == xnmp);
- nodes_monitors_end = nmp;
- }
- }
- else {
- ASSERT(!c_p->nodes_monitors);
- c_p->nodes_monitors = nmp;
- nmp->next = NULL;
- nmp->prev = nodes_monitors_end;
- if (nodes_monitors_end) {
- ASSERT(nodes_monitors);
- nodes_monitors_end->next = nmp;
- }
- else {
- ASSERT(!nodes_monitors);
- nodes_monitors = nmp;
- }
- nodes_monitors_end = nmp;
- }
- }
- return res;
-}
-static Eterm
-remove_nodes_monitors(Process *c_p, Uint32 opts, int all)
-{
- Eterm res = am_false;
- ErtsNodesMonitor *nmp;
-
- ERTS_LC_ASSERT(erts_lc_mtx_is_locked(&nodes_monitors_mtx));
- ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) & ERTS_PROC_LOCK_MAIN);
-
- nmp = c_p->nodes_monitors;
- ASSERT(!nmp || !nmp->prev || nmp->prev->proc != c_p);
-
- while (nmp && nmp->proc == c_p) {
- if (!all && nmp->opts != opts)
- nmp = nmp->next;
- else { /* if (all || nmp->opts == opts) */
- ErtsNodesMonitor *free_nmp;
- res = am_true;
- if (nmp->prev) {
- ASSERT(nodes_monitors != nmp);
- nmp->prev->next = nmp->next;
- }
- else {
- ASSERT(nodes_monitors == nmp);
- nodes_monitors = nmp->next;
- }
- if (nmp->next) {
- ASSERT(nodes_monitors_end != nmp);
- nmp->next->prev = nmp->prev;
- }
- else {
- ASSERT(nodes_monitors_end == nmp);
- nodes_monitors_end = nmp->prev;
- }
- free_nmp = nmp;
- nmp = nmp->next;
- if (c_p->nodes_monitors == free_nmp)
- c_p->nodes_monitors = nmp && nmp->proc == c_p ? nmp : NULL;
- erts_free(ERTS_ALC_T_NODES_MON, free_nmp);
- }
- }
-
- ASSERT(!all || !c_p->nodes_monitors);
- return res;
+ if (nmdp != &def_buf[0])
+ erts_free(ERTS_ALC_T_TMP, nmdp);
}
+
-void
-erts_delete_nodes_monitors(Process *c_p, ErtsProcLocks locks)
-{
-#if defined(ERTS_ENABLE_LOCK_CHECK)
- if (c_p) {
- ErtsProcLocks might_unlock = locks & ~ERTS_PROC_LOCK_MAIN;
- if (might_unlock)
- erts_proc_lc_might_unlock(c_p, might_unlock);
- }
-#endif
- if (erts_mtx_trylock(&nodes_monitors_mtx) == EBUSY) {
- ErtsProcLocks unlock_locks = locks & ~ERTS_PROC_LOCK_MAIN;
- if (c_p && unlock_locks)
- erts_proc_unlock(c_p, unlock_locks);
- erts_mtx_lock(&nodes_monitors_mtx);
- if (c_p && unlock_locks)
- erts_proc_lock(c_p, unlock_locks);
- }
- remove_nodes_monitors(c_p, 0, 1);
- erts_mtx_unlock(&nodes_monitors_mtx);
-}
-
-Eterm
-erts_monitor_nodes(Process *c_p, Eterm on, Eterm olist)
-{
+typedef struct {
+ Eterm **hpp;
+ Uint *szp;
Eterm res;
- Eterm opts_list = olist;
- Uint16 opts = (Uint16) 0;
-
- ASSERT(c_p);
- ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN);
-
- if (on != am_true && on != am_false)
- return THE_NON_VALUE;
-
- if (is_not_nil(opts_list)) {
- int all = 0, visible = 0, hidden = 0;
-
- while (is_list(opts_list)) {
- Eterm *cp = list_val(opts_list);
- Eterm opt = CAR(cp);
- opts_list = CDR(cp);
- if (opt == am_nodedown_reason)
- opts |= ERTS_NODES_MON_OPT_DOWN_REASON;
- else if (is_tuple(opt)) {
- Eterm* tp = tuple_val(opt);
- if (arityval(tp[0]) != 2)
- return THE_NON_VALUE;
- switch (tp[1]) {
- case am_node_type:
- switch (tp[2]) {
- case am_visible:
- if (hidden || all)
- return THE_NON_VALUE;
- opts |= ERTS_NODES_MON_OPT_TYPE_VISIBLE;
- visible = 1;
- break;
- case am_hidden:
- if (visible || all)
- return THE_NON_VALUE;
- opts |= ERTS_NODES_MON_OPT_TYPE_HIDDEN;
- hidden = 1;
- break;
- case am_all:
- if (visible || hidden)
- return THE_NON_VALUE;
- opts |= ERTS_NODES_MON_OPT_TYPES;
- all = 1;
- break;
- default:
- return THE_NON_VALUE;
- }
- break;
- default:
- return THE_NON_VALUE;
- }
- }
- else {
- return THE_NON_VALUE;
- }
- }
-
- if (is_not_nil(opts_list))
- return THE_NON_VALUE;
- }
+} ErtsNodesMonitorInfoContext;
- erts_mtx_lock(&nodes_monitors_mtx);
- if (on == am_true)
- res = insert_nodes_monitor(c_p, opts);
- else
- res = remove_nodes_monitors(c_p, opts, 0);
-
- erts_mtx_unlock(&nodes_monitors_mtx);
-
- return res;
+static void
+nodes_monitor_info(ErtsMonitor *mon, void *vctxt)
+{
+ ErtsMonitorDataExtended *mdep;
+ ErtsNodesMonitorInfoContext *ctxt = vctxt;
+ Uint no, i, opts, *szp;
+ Eterm **hpp, res;
+
+ hpp = ctxt->hpp;
+ szp = ctxt->szp;
+ res = ctxt->res;
+
+ ASSERT(erts_monitor_is_target(mon));
+ ASSERT(mon->type == ERTS_MON_TYPE_NODES);
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+ no = mdep->u.refc;
+
+ ASSERT(is_small(mdep->md.origin.other.item));
+ opts = (Uint) signed_val(mdep->md.origin.other.item);
+
+ for (i = 0; i < no; i++) {
+ Eterm olist = NIL;
+ if (opts & ERTS_NODES_MON_OPT_TYPES) {
+ Eterm type;
+ switch (opts & ERTS_NODES_MON_OPT_TYPES) {
+ case ERTS_NODES_MON_OPT_TYPES: type = am_all; break;
+ case ERTS_NODES_MON_OPT_TYPE_VISIBLE: type = am_visible; break;
+ case ERTS_NODES_MON_OPT_TYPE_HIDDEN: type = am_hidden; break;
+ default: erts_exit(ERTS_ABORT_EXIT, "Bad node type found\n");
+ }
+ olist = erts_bld_cons(hpp, szp,
+ erts_bld_tuple(hpp, szp, 2,
+ am_node_type,
+ type),
+ olist);
+ }
+ if (opts & ERTS_NODES_MON_OPT_DOWN_REASON)
+ olist = erts_bld_cons(hpp, szp, am_nodedown_reason, olist);
+ res = erts_bld_cons(hpp, szp,
+ erts_bld_tuple(hpp, szp, 2,
+ mon->other.item,
+ olist),
+ res);
+ }
+
+ ctxt->hpp = hpp;
+ ctxt->szp = szp;
+ ctxt->res = res;
}
-/*
- * Note, this function is only used for debuging.
- */
-
Eterm
erts_processes_monitoring_nodes(Process *c_p)
{
- ErtsNodesMonitor *nmp;
- Eterm res;
+ /*
+ * Note, this function is only used for debugging.
+ */
+ ErtsNodesMonitorInfoContext ctxt;
Eterm *hp;
- Eterm **hpp;
Uint sz;
- Uint *szp;
#ifdef DEBUG
Eterm *hend;
#endif
ASSERT(c_p);
ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN);
+
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN);
+ erts_thr_progress_block();
+
erts_mtx_lock(&nodes_monitors_mtx);
sz = 0;
- szp = &sz;
- hpp = NULL;
+ ctxt.szp = &sz;
+ ctxt.hpp = NULL;
- bld_result:
- res = NIL;
-
- for (nmp = nodes_monitors_end; nmp; nmp = nmp->prev) {
- Uint16 i;
- for (i = 0; i < nmp->no; i++) {
- Eterm olist = NIL;
- if (nmp->opts & ERTS_NODES_MON_OPT_TYPES) {
- Eterm type;
- switch (nmp->opts & ERTS_NODES_MON_OPT_TYPES) {
- case ERTS_NODES_MON_OPT_TYPES: type = am_all; break;
- case ERTS_NODES_MON_OPT_TYPE_VISIBLE: type = am_visible; break;
- case ERTS_NODES_MON_OPT_TYPE_HIDDEN: type = am_hidden; break;
- default: erts_exit(ERTS_ABORT_EXIT, "Bad node type found\n");
- }
- olist = erts_bld_cons(hpp, szp,
- erts_bld_tuple(hpp, szp, 2,
- am_node_type,
- type),
- olist);
- }
- if (nmp->opts & ERTS_NODES_MON_OPT_DOWN_REASON)
- olist = erts_bld_cons(hpp, szp, am_nodedown_reason, olist);
- res = erts_bld_cons(hpp, szp,
- erts_bld_tuple(hpp, szp, 2,
- nmp->proc->common.id,
- olist),
- res);
- }
- }
+ while (1) {
+ ctxt.res = NIL;
+
+ erts_monitor_list_foreach(nodes_monitors,
+ nodes_monitor_info,
+ (void *) &ctxt);
+
+ if (ctxt.hpp)
+ break;
- if (!hpp) {
hp = HAlloc(c_p, sz);
#ifdef DEBUG
hend = hp + sz;
#endif
- hpp = &hp;
- szp = NULL;
- goto bld_result;
+ ctxt.hpp = &hp;
+ ctxt.szp = NULL;
}
ASSERT(hp == hend);
erts_mtx_unlock(&nodes_monitors_mtx);
- return res;
+ erts_thr_progress_unblock();
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
+
+ return ctxt.res;
}
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index b1b7ce9c78..c608fef816 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -120,7 +120,6 @@
/* distribution trap functions */
extern Export* dmonitor_node_trap;
-extern Export* dmonitor_p_trap;
typedef enum {
ERTS_DSP_NO_LOCK,
@@ -274,58 +273,13 @@ void erts_schedule_dist_command(Port *prt, DistEntry *dist_entry)
#endif
-typedef struct {
- ErtsLink *d_lnk;
- ErtsLink *d_sub_lnk;
-} ErtsDistLinkData;
-
-ERTS_GLB_INLINE void erts_remove_dist_link(ErtsDistLinkData *,
- Eterm,
- Eterm,
- DistEntry *);
-ERTS_GLB_INLINE int erts_was_dist_link_removed(ErtsDistLinkData *);
-ERTS_GLB_INLINE void erts_destroy_dist_link(ErtsDistLinkData *);
-
-#if ERTS_GLB_INLINE_INCL_FUNC_DEF
-
-ERTS_GLB_INLINE void
-erts_remove_dist_link(ErtsDistLinkData *dldp,
- Eterm lid,
- Eterm rid,
- DistEntry *dep)
-{
- erts_de_links_lock(dep);
- dldp->d_lnk = erts_lookup_link(dep->nlinks, lid);
- if (!dldp->d_lnk)
- dldp->d_sub_lnk = NULL;
- else {
- dldp->d_sub_lnk = erts_remove_link(&ERTS_LINK_ROOT(dldp->d_lnk), rid);
- dldp->d_lnk = (ERTS_LINK_ROOT(dldp->d_lnk)
- ? NULL
- : erts_remove_link(&dep->nlinks, lid));
- }
- erts_de_links_unlock(dep);
-}
-
-ERTS_GLB_INLINE int
-erts_was_dist_link_removed(ErtsDistLinkData *dldp)
-{
- return dldp->d_sub_lnk != NULL;
-}
-
-ERTS_GLB_INLINE void
-erts_destroy_dist_link(ErtsDistLinkData *dldp)
-{
- if (dldp->d_lnk)
- erts_destroy_link(dldp->d_lnk);
- if (dldp->d_sub_lnk)
- erts_destroy_link(dldp->d_sub_lnk);
-}
-
+#ifdef DEBUG
+#define ERTS_DBG_CHK_NO_DIST_LNK(D, R, L) \
+ erts_dbg_chk_no_dist_proc_link((D), (R), (L))
+#else
+#define ERTS_DBG_CHK_NO_DIST_LNK(D, R, L)
#endif
-
-
/* Define for testing */
/* #define EXTREME_TTB_TRAPPING 1 */
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index fa49096d2c..562225c6ca 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2002-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2002-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -40,7 +40,7 @@
#include "erl_bits.h"
#include "erl_instrument.h"
#include "erl_mseg.h"
-#include "erl_monitors.h"
+#include "erl_monitor_link.h"
#include "erl_hl_timer.h"
#include "erl_cpu_topology.h"
#include "erl_thr_queue.h"
@@ -643,10 +643,10 @@ erts_alloc_init(int *argc, char **argv, ErtsAllocInitOpts *eaiop)
fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_PROC)]
= sizeof(Process);
- fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_MONITOR_SH)]
- = ERTS_MONITOR_SH_SIZE * sizeof(Uint);
- fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_NLINK_SH)]
- = ERTS_LINK_SH_SIZE * sizeof(Uint);
+ fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_MONITOR)]
+ = sizeof(ErtsMonitorDataHeap);
+ fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_LINK)]
+ = sizeof(ErtsLinkData);
fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_DRV_SEL_D_STATE)]
= sizeof(ErtsDrvSelectDataState);
fix_type_sizes[ERTS_ALC_FIX_TYPE_IX(ERTS_ALC_T_NIF_SEL_D_STATE)]
@@ -2379,7 +2379,6 @@ erts_memory(fmtfn_t *print_to_p, void *print_to_arg, void *proc, Eterm earg)
}
tmp += erts_ptab_mem_size(&erts_proc);
tmp += erts_bif_timer_memory_size();
- tmp += erts_tot_link_lh_size();
size.processes = size.processes_used = tmp;
@@ -2390,12 +2389,11 @@ erts_memory(fmtfn_t *print_to_p, void *print_to_arg, void *proc, Eterm earg)
add_fix_values(&size.processes,
&size.processes_used,
fi,
- ERTS_ALC_T_MONITOR_SH);
-
+ ERTS_ALC_T_MONITOR);
add_fix_values(&size.processes,
&size.processes_used,
fi,
- ERTS_ALC_T_NLINK_SH);
+ ERTS_ALC_T_LINK);
add_fix_values(&size.processes,
&size.processes_used,
fi,
@@ -2626,11 +2624,6 @@ erts_allocated_areas(fmtfn_t *print_to_p, void *print_to_arg, void *proc)
i++;
values[i].arity = 2;
- values[i].name = "link_lh";
- values[i].ui[0] = erts_tot_link_lh_size();
- i++;
-
- values[i].arity = 2;
values[i].name = "process_table";
values[i].ui[0] = erts_ptab_mem_size(&erts_proc);
i++;
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index 8107f133aa..4a6a19b210 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 2003-2017. All Rights Reserved.
+# Copyright Ericsson AB 2003-2018. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -282,6 +282,11 @@ type THR_PRGR_IDATA LONG_LIVED SYSTEM thr_prgr_internal_data
type THR_PRGR_DATA LONG_LIVED SYSTEM thr_prgr_data
type T_THR_PRGR_DATA SHORT_LIVED SYSTEM temp_thr_prgr_data
type RELEASE_LAREA SHORT_LIVED SYSTEM release_literal_area
+type SIG_DATA SHORT_LIVED PROCESSES signal_data
+type DIST_DEMONITOR SHORT_LIVED PROCESSES dist_demonitor
+type CML_CLEANUP SHORT_LIVED SYSTEM connection_ml_cleanup
+type ML_YIELD_STATE SHORT_LIVED SYSTEM monitor_link_yield_state
+type ML_DIST STANDARD SYSTEM monitor_link_dist
type ENVIRONMENT SYSTEM SYSTEM environment
@@ -326,8 +331,8 @@ type LCNT_VECTOR SHORT_LIVED SYSTEM lcnt_sample_vector
type DEBUG SHORT_LIVED SYSTEM debugging
type DDLL_PROCESS STANDARD SYSTEM ddll_processes
-type MONITOR_LH STANDARD PROCESSES monitor_lh
-type NLINK_LH STANDARD PROCESSES nlink_lh
+type MONITOR_EXT STANDARD PROCESSES monitor_extended
+type LINK_EXT STANDARD PROCESSES link_extended
type CODE LONG_LIVED CODE code
type LITERAL LITERAL CODE literal
type LITERAL_REF SHORT_LIVED CODE literal_area_ref
@@ -340,8 +345,8 @@ type LL_TEMP_TERM LONG_LIVED SYSTEM ll_temp_term
type NIF_TRAP_EXPORT STANDARD PROCESSES nif_trap_export_entry
type NIF_EXP_TRACE FIXED_SIZE PROCESSES nif_export_trace
type EXPORT LONG_LIVED CODE export_entry
-type MONITOR_SH FIXED_SIZE PROCESSES monitor_sh
-type NLINK_SH FIXED_SIZE PROCESSES nlink_sh
+type MONITOR FIXED_SIZE PROCESSES monitor
+type LINK FIXED_SIZE PROCESSES link
type AINFO_REQ SHORT_LIVED SYSTEM alloc_info_request
type SCHED_WTIME_REQ SHORT_LIVED SYSTEM sched_wall_time_request
type GC_INFO_REQ SHORT_LIVED SYSTEM gc_info_request
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 6475f04c56..9a3c058e82 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1999-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1999-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -50,6 +50,7 @@
#define ERTS_PTAB_WANT_DEBUG_FUNCS__
#include "erl_ptab.h"
#include "erl_time.h"
+#include "erl_proc_sig_queue.h"
#ifdef HIPE
#include "hipe_arch.h"
#endif
@@ -211,21 +212,27 @@ bld_magic_ref_bin_list(Uint **hpp, Uint *szp, ErlOffHeap* oh)
make_monitor_list:
returns a list of records..
-record(erl_monitor, {
- type, % MON_ORIGIN or MON_TARGET (1 or 3)
- ref,
+ type, % process | port | time_offset | dist_process | resource
+ % | node | nodes | suspend
+ dir, % origin | target
+ ref, % reference or []
pid, % Process or nodename
- name % registered name or []
+ extra % registered name, integer or []
}).
*/
static void do_calc_mon_size(ErtsMonitor *mon, void *vpsz)
{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
Uint *psz = vpsz;
- *psz += NC_HEAP_SIZE(mon->ref);
- *psz += (mon->type == MON_NIF_TARGET ?
- erts_resource_ref_size(mon->u.resource) :
- (is_immed(mon->u.pid) ? 0 : NC_HEAP_SIZE(mon->u.pid)));
- *psz += 8; /* CONS + 5-tuple */
+ *psz += is_immed(mdp->ref) ? 0 : NC_HEAP_SIZE(mdp->ref);
+
+ if (mon->type == ERTS_MON_TYPE_RESOURCE && erts_monitor_is_target(mon))
+ *psz += erts_resource_ref_size(mon->other.ptr);
+ else
+ *psz += is_immed(mon->other.item) ? 0 : NC_HEAP_SIZE(mon->other.item);
+
+ *psz += 9; /* CONS + 6-tuple */
}
typedef struct {
@@ -237,35 +244,97 @@ typedef struct {
static void do_make_one_mon_element(ErtsMonitor *mon, void * vpmlc)
{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
MonListContext *pmlc = vpmlc;
- Eterm tup;
- Eterm r = STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mon->ref);
- Eterm p = (mon->type == MON_NIF_TARGET ?
- erts_bld_resource_ref(&(pmlc->hp), &MSO(pmlc->p), mon->u.resource)
- : (is_immed(mon->u.pid) ? mon->u.pid
- : STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mon->u.pid)));
- tup = TUPLE5(pmlc->hp, pmlc->tag, make_small(mon->type), r, p, mon->name);
- pmlc->hp += 6;
+ Eterm tup, t, d, r, p, x;
+
+ r = is_immed(mdp->ref) ? mdp->ref : STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mdp->ref);
+ if (mon->type == ERTS_MON_TYPE_RESOURCE && erts_monitor_is_target(mon))
+ p = erts_bld_resource_ref(&(pmlc->hp), &MSO(pmlc->p), mon->other.ptr);
+ else
+ p = (is_immed(mon->other.item)
+ ? mon->other.item
+ : STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mon->other.item));
+
+ if (mon->flags & ERTS_ML_FLG_NAME)
+ x = ((ErtsMonitorDataExtended *) mdp)->u.name;
+ else if (erts_monitor_is_target(mon))
+ x = NIL;
+ else if (mon->type == ERTS_MON_TYPE_NODE || mon->type == ERTS_MON_TYPE_NODES)
+ x = make_small(((ErtsMonitorDataExtended *) mdp)->u.refc);
+ else
+ x = NIL;
+
+ switch (mon->type) {
+ case ERTS_MON_TYPE_PROC:
+ t = am_process;
+ break;
+ case ERTS_MON_TYPE_PORT:
+ t = am_port;
+ break;
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ t = am_time_offset;
+ break;
+ case ERTS_MON_TYPE_DIST_PROC: {
+ ERTS_DECL_AM(dist_process);
+ t = AM_dist_process;
+ break;
+ }
+ case ERTS_MON_TYPE_RESOURCE: {
+ ERTS_DECL_AM(resource);
+ t = AM_resource;
+ break;
+ }
+ case ERTS_MON_TYPE_NODE:
+ t = am_node;
+ break;
+ case ERTS_MON_TYPE_NODES: {
+ ERTS_DECL_AM(nodes);
+ t = AM_nodes;
+ break;
+ }
+ case ERTS_MON_TYPE_SUSPEND:
+ t = am_suspend;
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unknown monitor type");
+ t = am_error;
+ break;
+ }
+ if (erts_monitor_is_target(mon)) {
+ ERTS_DECL_AM(target);
+ d = AM_target;
+ }
+ else {
+ ERTS_DECL_AM(origin);
+ d = AM_origin;
+ }
+ tup = TUPLE6(pmlc->hp, pmlc->tag, t, d, r, p, x);
+ pmlc->hp += 7;
pmlc->res = CONS(pmlc->hp, tup, pmlc->res);
pmlc->hp += 2;
}
static Eterm
-make_monitor_list(Process *p, ErtsMonitor *root)
+make_monitor_list(Process *p, int tree, ErtsMonitor *root, Eterm tail)
{
DECL_AM(erl_monitor);
Uint sz = 0;
MonListContext mlc;
+ void (*foreach)(ErtsMonitor *,
+ void (*)(ErtsMonitor *, void *),
+ void *);
- erts_doforall_monitors(root, &do_calc_mon_size, &sz);
- if (sz == 0) {
- return NIL;
- }
+ foreach = tree ? erts_monitor_tree_foreach : erts_monitor_list_foreach;
+
+ (*foreach)(root, do_calc_mon_size, &sz);
+ if (sz == 0)
+ return tail;
mlc.p = p;
mlc.hp = HAlloc(p,sz);
- mlc.res = NIL;
+ mlc.res = tail;
mlc.tag = AM_erl_monitor;
- erts_doforall_monitors(root, &do_make_one_mon_element, &mlc);
+ (*foreach)(root, do_make_one_mon_element, &mlc);
return mlc.res;
}
@@ -273,20 +342,22 @@ make_monitor_list(Process *p, ErtsMonitor *root)
make_link_list:
returns a list of records..
-record(erl_link, {
- type, % LINK_NODE or LINK_PID (1 or 3)
- pid, % Process or nodename
- targets % List of erl_link's or nil
+ type, % process | port | dist_process
+ pid, % Process or port
+ id % (address)
}).
*/
-static void do_calc_lnk_size(ErtsLink *lnk, void *vpsz)
+static void calc_lnk_size(ErtsLink *lnk, void *vpsz)
{
Uint *psz = vpsz;
- *psz += is_immed(lnk->pid) ? 0 : NC_HEAP_SIZE(lnk->pid);
- if (lnk->type != LINK_NODE && ERTS_LINK_ROOT(lnk) != NULL) {
- /* Node links use this pointer as ref counter... */
- erts_doforall_links(ERTS_LINK_ROOT(lnk),&do_calc_lnk_size,vpsz);
- }
+ Uint sz = 0;
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+
+ (void) erts_bld_uword(NULL, &sz, (UWord) ldp);
+
+ *psz += sz;
+ *psz += is_immed(lnk->other.item) ? 0 : size_object(lnk->other.item);
*psz += 7; /* CONS + 4-tuple */
}
@@ -297,37 +368,58 @@ typedef struct {
Eterm tag;
} LnkListContext;
-static void do_make_one_lnk_element(ErtsLink *lnk, void * vpllc)
+static void make_one_lnk_element(ErtsLink *lnk, void * vpllc)
{
LnkListContext *pllc = vpllc;
- Eterm tup;
- Eterm old_res, targets = NIL;
- Eterm p = (is_immed(lnk->pid)
- ? lnk->pid
- : STORE_NC(&(pllc->hp), &MSO(pllc->p), lnk->pid));
- if (lnk->type == LINK_NODE) {
- targets = make_small(ERTS_LINK_REFC(lnk));
- } else if (ERTS_LINK_ROOT(lnk) != NULL) {
- old_res = pllc->res;
- pllc->res = NIL;
- erts_doforall_links(ERTS_LINK_ROOT(lnk),&do_make_one_lnk_element, vpllc);
- targets = pllc->res;
- pllc->res = old_res;
- }
- tup = TUPLE4(pllc->hp, pllc->tag, make_small(lnk->type), p, targets);
+ Eterm tup, t, pid, id;
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+
+ id = erts_bld_uword(&pllc->hp, NULL, (UWord) ldp);
+
+ if (is_immed(lnk->other.item))
+ pid = lnk->other.item;
+ else {
+ Uint sz = size_object(lnk->other.item);
+ pid = copy_struct(lnk->other.item, sz, &(pllc->hp), &MSO(pllc->p));
+ }
+
+ switch (lnk->type) {
+ case ERTS_LNK_TYPE_PROC:
+ t = am_process;
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ t = am_port;
+ break;
+ case ERTS_LNK_TYPE_DIST_PROC: {
+ ERTS_DECL_AM(dist_process);
+ t = AM_dist_process;
+ break;
+ }
+ default:
+ ERTS_INTERNAL_ERROR("Unkown link type");
+ t = am_undefined;
+ break;
+ }
+
+ tup = TUPLE4(pllc->hp, pllc->tag, t, pid, id);
pllc->hp += 5;
pllc->res = CONS(pllc->hp, tup, pllc->res);
pllc->hp += 2;
}
static Eterm
-make_link_list(Process *p, ErtsLink *root, Eterm tail)
+make_link_list(Process *p, int tree, ErtsLink *root, Eterm tail)
{
DECL_AM(erl_link);
Uint sz = 0;
LnkListContext llc;
+ void (*foreach)(ErtsLink *,
+ void (*)(ErtsLink *, void *),
+ void *);
- erts_doforall_links(root, &do_calc_lnk_size, &sz);
+ foreach = tree ? erts_link_tree_foreach : erts_link_list_foreach;
+
+ (*foreach)(root, calc_lnk_size, (void *) &sz);
if (sz == 0) {
return tail;
}
@@ -335,7 +427,7 @@ make_link_list(Process *p, ErtsLink *root, Eterm tail)
llc.hp = HAlloc(p,sz);
llc.res = tail;
llc.tag = AM_erl_link;
- erts_doforall_links(root, &do_make_one_lnk_element, &llc);
+ (*foreach)(root, make_one_lnk_element, (void *) &llc);
return llc.res;
}
@@ -381,6 +473,8 @@ typedef struct {
Eterm term;
ErtsResource* resource;
}entity;
+ int named;
+ Uint16 type;
Eterm node;
/* pid is actual target being monitored, no matter pid/port or name */
Eterm pid;
@@ -423,78 +517,103 @@ static void collect_one_link(ErtsLink *lnk, void *vmicp)
{
MonitorInfoCollection *micp = vmicp;
EXTEND_MONITOR_INFOS(micp);
- if (!(lnk->type == LINK_PID)) {
- return;
- }
- micp->mi[micp->mi_i].entity.term = lnk->pid;
- micp->sz += 2 + NC_HEAP_SIZE(lnk->pid);
+ micp->mi[micp->mi_i].entity.term = lnk->other.item;
+ micp->sz += 2 + NC_HEAP_SIZE(lnk->other.item);
micp->mi_i++;
}
static void collect_one_origin_monitor(ErtsMonitor *mon, void *vmicp)
{
- MonitorInfoCollection *micp = vmicp;
+ if (erts_monitor_is_origin(mon)) {
+ MonitorInfoCollection *micp = vmicp;
- if (mon->type != MON_ORIGIN) {
- return;
- }
- EXTEND_MONITOR_INFOS(micp);
- if (is_atom(mon->u.pid)) { /* external by name */
- micp->mi[micp->mi_i].entity.term = mon->name;
- micp->mi[micp->mi_i].node = mon->u.pid;
- micp->sz += 3; /* need one 2-tuple */
- } else if (is_external_pid(mon->u.pid)) { /* external by pid */
- micp->mi[micp->mi_i].entity.term = mon->u.pid;
- micp->mi[micp->mi_i].node = NIL;
- micp->sz += NC_HEAP_SIZE(mon->u.pid);
- } else if (!is_nil(mon->name)) { /* internal by name */
- micp->mi[micp->mi_i].entity.term = mon->name;
- micp->mi[micp->mi_i].node = erts_this_dist_entry->sysname;
- micp->sz += 3; /* need one 2-tuple */
- } else { /* internal by pid */
- micp->mi[micp->mi_i].entity.term = mon->u.pid;
- micp->mi[micp->mi_i].node = NIL;
- /* no additional heap space needed */
- }
-
- /* have always pid at hand, to assist with figuring out if its a port or
- * a process, when we monitored by name and process_info is requested.
- * See: erl_bif_info.c:process_info_aux section for am_monitors */
- micp->mi[micp->mi_i].pid = mon->u.pid;
+ EXTEND_MONITOR_INFOS(micp);
+
+ micp->mi[micp->mi_i].type = mon->type;
+
+ switch (mon->type) {
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ if (!(mon->flags & ERTS_ML_FLG_NAME)) {
+ micp->mi[micp->mi_i].named = 0;
+ micp->mi[micp->mi_i].entity.term = mon->other.item;
+ micp->mi[micp->mi_i].node = NIL;
+ if (is_not_atom(mon->other.item))
+ micp->sz += NC_HEAP_SIZE(mon->other.item);
+ }
+ else {
+ ErtsMonitorDataExtended *mdep;
+ micp->mi[micp->mi_i].named = !0;
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+ micp->mi[micp->mi_i].entity.term = mdep->u.name;
+ if (mdep->dist)
+ micp->mi[micp->mi_i].node = mdep->dist->nodename;
+ else
+ micp->mi[micp->mi_i].node = erts_this_dist_entry->sysname;
+ micp->sz += 3; /* need one 2-tuple */
+ }
- micp->mi_i++;
- micp->sz += 2 + 3; /* For a cons cell and a 2-tuple */
+ /* have always pid at hand, to assist with figuring out if its a port or
+ * a process, when we monitored by name and process_info is requested.
+ * See: erl_bif_info.c:process_info_aux section for am_monitors */
+ micp->mi[micp->mi_i].pid = mon->other.item;
+
+ micp->mi_i++;
+ micp->sz += 2 + 3; /* For a cons cell and a 2-tuple */
+ break;
+ default:
+ break;
+ }
+ }
}
static void collect_one_target_monitor(ErtsMonitor *mon, void *vmicp)
{
MonitorInfoCollection *micp = vmicp;
- if (mon->type != MON_TARGET && mon->type != MON_NIF_TARGET) {
- return;
- }
+ if (erts_monitor_is_target(mon)) {
- EXTEND_MONITOR_INFOS(micp);
+ EXTEND_MONITOR_INFOS(micp);
+ micp->mi[micp->mi_i].type = mon->type;
+ micp->mi[micp->mi_i].named = !!(mon->flags & ERTS_ML_FLG_NAME);
+ switch (mon->type) {
+
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_DIST_PROC:
+
+ micp->mi[micp->mi_i].entity.term = mon->other.item;
+ micp->mi[micp->mi_i].node = NIL;
+ micp->sz += NC_HEAP_SIZE(mon->other.item);
+
+ micp->sz += 2; /* cons */;
+ micp->mi_i++;
+ break;
+
+ case ERTS_MON_TYPE_RESOURCE:
+
+ micp->mi[micp->mi_i].entity.resource = mon->other.ptr;
+ micp->mi[micp->mi_i].node = NIL;
+ micp->sz += erts_resource_ref_size(mon->other.ptr);
+
+ micp->sz += 2; /* cons */;
+ micp->mi_i++;
+ break;
+
+ default:
+ break;
+ }
- if (mon->type == MON_NIF_TARGET) {
- micp->mi[micp->mi_i].entity.resource = mon->u.resource;
- micp->mi[micp->mi_i].node = make_small(MON_NIF_TARGET);
- micp->sz += erts_resource_ref_size(mon->u.resource);
- }
- else {
- micp->mi[micp->mi_i].entity.term = mon->u.pid;
- micp->mi[micp->mi_i].node = NIL;
- micp->sz += NC_HEAP_SIZE(mon->u.pid);
}
- micp->sz += 2; /* cons */;
- micp->mi_i++;
}
typedef struct {
Process *c_p;
ErtsProcLocks c_p_locks;
- ErtsSuspendMonitor **smi;
+ ErtsMonitorSuspend **smi;
Uint smi_i;
Uint smi_max;
int sz;
@@ -517,10 +636,10 @@ do { \
(SMICP)->smi, \
((SMICP)->smi_max \
+ ERTS_SMI_INC) \
- * sizeof(ErtsSuspendMonitor *)) \
+ * sizeof(ErtsMonitorSuspend *)) \
: erts_alloc(ERTS_ALC_T_TMP, \
ERTS_SMI_INC \
- * sizeof(ErtsSuspendMonitor *))); \
+ * sizeof(ErtsMonitorSuspend *))); \
(SMICP)->smi_max += ERTS_SMI_INC; \
} \
} while (0)
@@ -533,12 +652,13 @@ do { \
} while (0)
static void
-collect_one_suspend_monitor(ErtsSuspendMonitor *smon, void *vsmicp)
+collect_one_suspend_monitor(ErtsMonitor *mon, void *vsmicp)
{
+ ErtsMonitorSuspend *smon = erts_monitor_suspend(mon);
ErtsSuspendMonitorInfoCollection *smicp = vsmicp;
Process *suspendee = erts_pid2proc(smicp->c_p,
smicp->c_p_locks,
- smon->pid,
+ mon->other.item,
0);
if (suspendee) { /* suspendee is alive */
Sint a, p;
@@ -572,29 +692,23 @@ collect_one_suspend_monitor(ErtsSuspendMonitor *smon, void *vsmicp)
#define ERTS_PI_FAIL_TYPE_BADARG 0
#define ERTS_PI_FAIL_TYPE_YIELD 1
-#define ERTS_PI_FAIL_TYPE_AWAIT_EXIT 2
+#define ERTS_PI_FAIL_TYPE_EXITED 2
static ERTS_INLINE ErtsProcLocks
pi_locks(Eterm info)
{
switch (info) {
- case am_status:
case am_priority:
- case am_trap_exit:
- return ERTS_PROC_LOCK_STATUS;
- case am_links:
- case am_monitors:
- case am_monitored_by:
- case am_suspending:
- return ERTS_PROC_LOCK_LINK;
+ case am_status:
+ return 0;
+ case am_suspended:
+ return ERTS_PROC_LOCK_STATUS;
case am_messages:
case am_message_queue_len:
case am_total_heap_size:
- return ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_MSGQ;
- case am_memory:
- return ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_MSGQ;
+ return ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_MSGQ;
default:
- return ERTS_PROC_LOCK_MAIN;
+ return ERTS_PROC_LOCK_MAIN;
}
}
@@ -743,7 +857,7 @@ process_info_init(void)
}
static ERTS_INLINE Process *
-pi_pid2proc(Process *c_p, Eterm pid, ErtsProcLocks info_locks)
+pi_lookup_proc(Process *c_p, Eterm pid, ErtsProcLocks *locks)
{
/*
* If the main lock is needed, we use erts_pid2proc_not_running()
@@ -758,23 +872,79 @@ pi_pid2proc(Process *c_p, Eterm pid, ErtsProcLocks info_locks)
* is currently running.
*/
- if (info_locks & ERTS_PROC_LOCK_MAIN)
- return erts_pid2proc_not_running(c_p, ERTS_PROC_LOCK_MAIN,
- pid, info_locks);
- else
- return erts_pid2proc(c_p, ERTS_PROC_LOCK_MAIN,
- pid, info_locks);
+ if ((*locks) & ERTS_PROC_LOCK_MAIN) {
+ erts_aint32_t state;
+ int local_only, done;
+ Process *rp;
+ ErtsProcLocks more_locks;
+
+ rp = erts_pid2proc_not_running(c_p, ERTS_PROC_LOCK_MAIN,
+ pid, ERTS_PROC_LOCK_MAIN);
+
+ if (!rp || rp == ERTS_PROC_LOCK_BUSY)
+ return rp;
+
+ if ((*locks) & ERTS_PROC_LOCK_MSGQ) {
+ /*
+ * Move in queue into private queue and
+ * release msgq lock, enabling others to
+ * send messages to the process while it
+ * is being inspected...
+ */
+ erts_proc_lock(rp, ERTS_PROC_LOCK_MSGQ);
+ erts_proc_sig_fetch(rp);
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MSGQ);
+ (*locks) &= ~ERTS_PROC_LOCK_MSGQ;
+ }
+
+ /*
+ * Handle all signals received up to this point
+ * in order to preserve signal order.
+ *
+ * FIX ME: Should be done yielding...
+ */
+ local_only = 0;
+ do {
+ int r = CONTEXT_REDS;
+ done = erts_proc_sig_handle_incoming(rp, &state, &r,
+ CONTEXT_REDS,
+ local_only);
+ local_only = !0;
+ BUMP_REDS(c_p, r);
+ } while (!done && !(state & ERTS_PSFLG_EXITING));
+
+ if (state & ERTS_PSFLG_EXITING) {
+ if (rp != c_p)
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+ return NULL;
+ }
+ more_locks = (*locks) & ~ERTS_PROC_LOCK_MAIN;
+ if (more_locks)
+ erts_proc_lock(rp, more_locks);
+ return rp;
+ }
+
+ ASSERT(!((*locks) & ERTS_PROC_LOCK_MSGQ));
+
+ if (*locks)
+ return erts_pid2proc(c_p, ERTS_PROC_LOCK_MAIN,
+ pid, *locks);
+
+ return erts_proc_lookup(pid);
}
+
+
static BIF_RETTYPE
process_info_aux(Process *BIF_P,
Process *rp,
ErtsProcLocks rp_locks,
Eterm rpid,
Eterm item,
- int always_wrap);
+ int always_wrap,
+ int *reds);
#define ERTS_PI_RES_ELEM_IX_BUF_INC 1024
#define ERTS_PI_DEF_RES_ELEM_IX_BUF_SZ ERTS_PI_ARGS
@@ -794,6 +964,7 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
ErtsProcLocks locks = (ErtsProcLocks) 0;
int res_len, ix;
Process *rp = NULL;
+ int reds = 0;
*fail_type = ERTS_PI_FAIL_TYPE_BADARG;
@@ -845,9 +1016,14 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
ASSERT(res_len > 0);
- rp = pi_pid2proc(c_p, pid, locks|ERTS_PROC_LOCK_STATUS);
+ rp = pi_lookup_proc(c_p, pid, &locks);
if (!rp) {
- res = am_undefined;
+ if (c_p->common.id != pid)
+ res = am_undefined;
+ else {
+ *fail_type = ERTS_PI_FAIL_TYPE_EXITED;
+ res = THE_NON_VALUE;
+ }
goto done;
}
else if (rp == ERTS_PROC_LOCK_BUSY) {
@@ -856,38 +1032,9 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
*fail_type = ERTS_PI_FAIL_TYPE_YIELD;
goto done;
}
- else if (c_p != rp && ERTS_PROC_PENDING_EXIT(rp)) {
- locks |= ERTS_PROC_LOCK_STATUS;
- res = THE_NON_VALUE;
- *fail_type = ERTS_PI_FAIL_TYPE_AWAIT_EXIT;
- goto done;
- }
- else {
- ErtsProcLocks unlock_locks = 0;
-
- if (c_p == rp)
- locks |= ERTS_PROC_LOCK_MAIN;
- if (!(locks & ERTS_PROC_LOCK_STATUS))
- unlock_locks |= ERTS_PROC_LOCK_STATUS;
-
- if (locks & ERTS_PROC_LOCK_MSGQ) {
- /*
- * Move in queue into private queue and
- * release msgq lock, enabling others to
- * send messages to the process while it
- * is being inspected...
- */
- ASSERT(locks & ERTS_PROC_LOCK_MAIN);
- ERTS_MSGQ_MV_INQ2PRIVQ(rp);
- locks &= ~ERTS_PROC_LOCK_MSGQ;
- unlock_locks |= ERTS_PROC_LOCK_MSGQ;
- }
-
- if (unlock_locks)
- erts_proc_unlock(rp, unlock_locks);
-
- }
+ if (c_p == rp)
+ locks |= ERTS_PROC_LOCK_MAIN;
/*
* We always handle 'messages' first if it should be part
@@ -899,16 +1046,23 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
if (want_messages) {
ix = pi_arg2ix(am_messages);
ASSERT(part_res[ix] == THE_NON_VALUE);
- part_res[ix] = process_info_aux(c_p, rp, locks, pid, am_messages, always_wrap);
- ASSERT(part_res[ix] != THE_NON_VALUE);
+ res = process_info_aux(c_p, rp, locks, pid, am_messages,
+ always_wrap, &reds);
+ ASSERT(res != am_undefined);
+ ASSERT(res != THE_NON_VALUE);
+ part_res[ix] = res;
}
for (; res_elem_ix_ix >= 0; res_elem_ix_ix--) {
ix = res_elem_ix[res_elem_ix_ix];
if (part_res[ix] == THE_NON_VALUE) {
arg = pi_ix2arg(ix);
- part_res[ix] = process_info_aux(c_p, rp, locks, pid, arg, always_wrap);
- ASSERT(part_res[ix] != THE_NON_VALUE);
+ res = process_info_aux(c_p, rp, locks, pid, arg,
+ always_wrap, &reds);
+ if (res == am_undefined)
+ goto done;
+ ASSERT(res != THE_NON_VALUE);
+ part_res[ix] = res;
}
}
@@ -948,6 +1102,8 @@ process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
if (res_elem_ix != &def_res_elem_ix_buf[0])
erts_free(ERTS_ALC_T_TMP, res_elem_ix);
+ BUMP_REDS(c_p, reds);
+
return res;
}
@@ -971,8 +1127,8 @@ BIF_RETTYPE process_info_1(BIF_ALIST_1)
BIF_ERROR(BIF_P, BADARG);
case ERTS_PI_FAIL_TYPE_YIELD:
ERTS_BIF_YIELD1(bif_export[BIF_process_info_1], BIF_P, BIF_ARG_1);
- case ERTS_PI_FAIL_TYPE_AWAIT_EXIT:
- ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
+ case ERTS_PI_FAIL_TYPE_EXITED:
+ ERTS_BIF_EXITED(BIF_P);
default:
erts_exit(ERTS_ABORT_EXIT, "%s:%d: Internal error", __FILE__, __LINE__);
}
@@ -989,7 +1145,7 @@ BIF_RETTYPE process_info_2(BIF_ALIST_2)
Process *rp;
Eterm pid = BIF_ARG_1;
ErtsProcLocks info_locks;
- int fail_type;
+ int fail_type, reds = 0;
if (is_external_pid(pid)
&& external_pid_dist_entry(pid) == erts_this_dist_entry)
@@ -1011,8 +1167,8 @@ BIF_RETTYPE process_info_2(BIF_ALIST_2)
case ERTS_PI_FAIL_TYPE_YIELD:
ERTS_BIF_YIELD2(bif_export[BIF_process_info_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
- case ERTS_PI_FAIL_TYPE_AWAIT_EXIT:
- ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
+ case ERTS_PI_FAIL_TYPE_EXITED:
+ ERTS_BIF_EXITED(BIF_P);
default:
erts_exit(ERTS_ABORT_EXIT, "%s:%d: Internal error",
__FILE__, __LINE__);
@@ -1027,44 +1183,23 @@ BIF_RETTYPE process_info_2(BIF_ALIST_2)
info_locks = pi_locks(BIF_ARG_2);
- rp = pi_pid2proc(BIF_P, pid, info_locks|ERTS_PROC_LOCK_STATUS);
- if (!rp)
- res = am_undefined;
+ rp = pi_lookup_proc(BIF_P, pid, &info_locks);
+ if (!rp) {
+ if (BIF_P->common.id == pid)
+ ERTS_BIF_EXITED(BIF_P);
+ BIF_RET(am_undefined);
+ }
else if (rp == ERTS_PROC_LOCK_BUSY)
ERTS_BIF_YIELD2(bif_export[BIF_process_info_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
- else if (rp != BIF_P && ERTS_PROC_PENDING_EXIT(rp)) {
- erts_proc_unlock(rp, info_locks|ERTS_PROC_LOCK_STATUS);
- ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
- }
- else {
- ErtsProcLocks unlock_locks = 0;
-
- if (BIF_P == rp)
- info_locks |= ERTS_PROC_LOCK_MAIN;
- if (!(info_locks & ERTS_PROC_LOCK_STATUS))
- unlock_locks |= ERTS_PROC_LOCK_STATUS;
-
- if (info_locks & ERTS_PROC_LOCK_MSGQ) {
- /*
- * Move in queue into private queue and
- * release msgq lock, enabling others to
- * send messages to the process while it
- * is being inspected...
- */
- ASSERT(info_locks & ERTS_PROC_LOCK_MAIN);
- ERTS_MSGQ_MV_INQ2PRIVQ(rp);
- info_locks &= ~ERTS_PROC_LOCK_MSGQ;
- unlock_locks |= ERTS_PROC_LOCK_MSGQ;
- }
+ if (BIF_P == rp)
+ info_locks |= ERTS_PROC_LOCK_MAIN;
- if (unlock_locks)
- erts_proc_unlock(rp, unlock_locks);
+ res = process_info_aux(BIF_P, rp, info_locks, pid, BIF_ARG_2,
+ 0, &reds);
- res = process_info_aux(BIF_P, rp, info_locks, pid, BIF_ARG_2, 0);
- }
- ASSERT(is_value(res));
+ BUMP_REDS(BIF_P, reds);
if (BIF_P == rp)
info_locks &= ~ERTS_PROC_LOCK_MAIN;
@@ -1081,11 +1216,14 @@ process_info_aux(Process *BIF_P,
ErtsProcLocks rp_locks,
Eterm rpid,
Eterm item,
- int always_wrap)
+ int always_wrap,
+ int *reds)
{
Eterm *hp;
Eterm res = NIL;
+ (*reds)++;
+
ASSERT(rp);
/*
@@ -1144,14 +1282,15 @@ process_info_aux(Process *BIF_P,
break;
case am_status:
- res = erts_process_status(rp, rpid);
- ASSERT(res != am_undefined);
+ res = erts_process_state2status(erts_atomic32_read_nob(&rp->state));
+ if (res == am_exiting || res == am_free)
+ return am_undefined;
hp = HAlloc(BIF_P, 3);
break;
case am_messages: {
- if (rp->msg.len == 0 || ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
+ if (rp->sig_qs.len == 0 || ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
hp = HAlloc(BIF_P, 3);
} else {
ErtsMessageInfo *mip;
@@ -1162,16 +1301,17 @@ process_info_aux(Process *BIF_P,
#endif
mip = erts_alloc(ERTS_ALC_T_TMP,
- rp->msg.len*sizeof(ErtsMessageInfo));
+ rp->sig_qs.len*sizeof(ErtsMessageInfo));
/*
* Note that message queue may shrink when calling
- * erts_prep_msgq_for_inspection() since it removes
+ * erts_proc_sig_prep_msgq_for_inspection() since it removes
* corrupt distribution messages.
*/
- heap_need = erts_prep_msgq_for_inspection(BIF_P, rp, rp_locks, mip);
+ heap_need = erts_proc_sig_prep_msgq_for_inspection(BIF_P, rp,
+ rp_locks, mip);
heap_need += 3; /* top 2-tuple */
- heap_need += rp->msg.len*2; /* Cons cells */
+ heap_need += rp->sig_qs.len*2; /* Cons cells */
hp = HAlloc(BIF_P, heap_need); /* heap_need is exact */
#ifdef DEBUG
@@ -1179,7 +1319,7 @@ process_info_aux(Process *BIF_P,
#endif
/* Build list of messages... */
- for (i = rp->msg.len - 1, res = NIL; i >= 0; i--) {
+ for (i = rp->sig_qs.len - 1, res = NIL; i >= 0; i--) {
Eterm msg = ERL_MESSAGE_TERM(mip[i].msgp);
Uint sz = mip[i].size;
@@ -1192,6 +1332,11 @@ process_info_aux(Process *BIF_P,
ASSERT(hp_end == hp + 3);
+ if (rp->sig_qs.len > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += rp->sig_qs.len / 4;
+
erts_free(ERTS_ALC_T_TMP, mip);
}
break;
@@ -1199,7 +1344,7 @@ process_info_aux(Process *BIF_P,
case am_message_queue_len:
hp = HAlloc(BIF_P, 3);
- res = make_small(rp->msg.len);
+ res = make_small(rp->sig_qs.len);
break;
case am_links: {
@@ -1209,7 +1354,7 @@ process_info_aux(Process *BIF_P,
INIT_MONITOR_INFOS(mic);
- erts_doforall_links(ERTS_P_LINKS(rp),&collect_one_link,&mic);
+ erts_link_tree_foreach(ERTS_P_LINKS(rp), collect_one_link, (void *) &mic);
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
@@ -1218,6 +1363,12 @@ process_info_aux(Process *BIF_P,
res = CONS(hp, item, res);
hp += 2;
}
+
+ if (mic.mi_i > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += mic.mi_i / 4;
+
DESTROY_MONITOR_INFOS(mic);
break;
}
@@ -1227,12 +1378,14 @@ process_info_aux(Process *BIF_P,
int i;
INIT_MONITOR_INFOS(mic);
- erts_doforall_monitors(ERTS_P_MONITORS(rp),
- &collect_one_origin_monitor, &mic);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(rp),
+ collect_one_origin_monitor,
+ (void *) &mic);
+
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
- if (is_atom(mic.mi[i].entity.term)) {
+ if (mic.mi[i].named) {
/* Monitor by name.
* Build {process|port, {Name, Node}} and cons it.
*/
@@ -1252,11 +1405,28 @@ process_info_aux(Process *BIF_P,
hp += 2;
}
else {
- /* Monitor by pid. Build {process|port, Pid} and cons it. */
+ /* Build {process|port|time_offset, Pid|clock_service} and cons it. */
Eterm t;
- Eterm pid = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity.term);
+ Eterm pid;
+ Eterm m_type;
+
+ if (is_atom(mic.mi[i].entity.term))
+ pid = mic.mi[i].entity.term;
+ else
+ pid = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity.term);
+
+ switch (mic.mi[i].type) {
+ case ERTS_MON_TYPE_PORT:
+ m_type = am_port;
+ break;
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ m_type = am_time_offset;
+ break;
+ default:
+ m_type = am_process;
+ break;
+ }
- Eterm m_type = is_port(mic.mi[i].pid) ? am_port : am_process;
ASSERT(is_pid(mic.mi[i].pid)
|| is_port(mic.mi[i].pid));
@@ -1266,6 +1436,12 @@ process_info_aux(Process *BIF_P,
hp += 2;
}
}
+
+ if (mic.mi_i > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += mic.mi_i / 4;
+
DESTROY_MONITOR_INFOS(mic);
break;
}
@@ -1276,20 +1452,34 @@ process_info_aux(Process *BIF_P,
Eterm item;
INIT_MONITOR_INFOS(mic);
- erts_doforall_monitors(ERTS_P_MONITORS(rp),&collect_one_target_monitor,&mic);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(rp),
+ collect_one_target_monitor,
+ (void *) &mic);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(rp),
+ collect_one_target_monitor,
+ (void *) &mic);
+
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
for (i = 0; i < mic.mi_i; ++i) {
- if (mic.mi[i].node == make_small(MON_NIF_TARGET)) {
- item = erts_bld_resource_ref(&hp, &MSO(BIF_P), mic.mi[i].entity.resource);
- }
- else {
- item = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity.term);
- }
+ if (mic.mi[i].type == ERTS_MON_TYPE_RESOURCE)
+ item = erts_bld_resource_ref(&hp,
+ &MSO(BIF_P),
+ mic.mi[i].entity.resource);
+ else
+ item = STORE_NC(&hp,
+ &MSO(BIF_P),
+ mic.mi[i].entity.term);
res = CONS(hp, item, res);
hp += 2;
}
+
+ if (mic.mi_i > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += mic.mi_i / 4;
+
DESTROY_MONITOR_INFOS(mic);
break;
}
@@ -1306,11 +1496,11 @@ process_info_aux(Process *BIF_P,
BIF_P,
(BIF_P == rp
? ERTS_PROC_LOCK_MAIN
- : 0) | ERTS_PROC_LOCK_LINK);
+ : 0) | ERTS_PROC_LOCK_STATUS);
- erts_doforall_suspend_monitors(rp->suspend_monitors,
- &collect_one_suspend_monitor,
- &smic);
+ erts_monitor_tree_foreach(rp->suspend_monitors,
+ &collect_one_suspend_monitor,
+ &smic);
hp = HAlloc(BIF_P, 3 + smic.sz);
#ifdef DEBUG
hp_end = hp + smic.sz;
@@ -1334,12 +1524,17 @@ process_info_aux(Process *BIF_P,
pending = small_to_big(p, hp);
hp += BIG_UINT_HEAP_SIZE;
}
- item = TUPLE3(hp, smic.smi[i]->pid, active, pending);
+ item = TUPLE3(hp, smic.smi[i]->mon.other.item, active, pending);
hp += 4;
res = CONS(hp, item, res);
hp += 2;
}
+ if (smic.smi_i > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += smic.smi_i / 4;
+
ERTS_DESTROY_SUSPEND_MONITOR_INFOS(smic);
ASSERT(hp == hp_end);
@@ -1347,18 +1542,22 @@ process_info_aux(Process *BIF_P,
}
case am_dictionary:
- if (ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
+ if (!rp->dictionary || (ERTS_TRACE_FLAGS(rp) & F_SENSITIVE)) {
res = NIL;
} else {
+ Uint num = rp->dictionary->numElements;
res = erts_dictionary_copy(BIF_P, rp->dictionary);
+ if (num > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += (int) num / 4;
}
hp = HAlloc(BIF_P, 3);
break;
case am_trap_exit: {
- erts_aint32_t state = erts_atomic32_read_nob(&rp->state);
hp = HAlloc(BIF_P, 3);
- if (state & ERTS_PSFLG_TRAP_EXIT)
+ if (rp->flags & F_TRAP_EXIT)
res = am_true;
else
res = am_false;
@@ -1415,7 +1614,6 @@ process_info_aux(Process *BIF_P,
}
case am_total_heap_size: {
- ErtsMessage *mp;
Uint total_heap_size;
Uint hsz = 3;
@@ -1425,10 +1623,19 @@ process_info_aux(Process *BIF_P,
total_heap_size += rp->mbuf_sz;
- if (rp->flags & F_ON_HEAP_MSGQ)
- for (mp = rp->msg.first; mp; mp = mp->next)
- if (mp->data.attached)
- total_heap_size += erts_msg_attached_data_size(mp);
+ if (rp->flags & F_ON_HEAP_MSGQ) {
+ ERTS_FOREACH_SIG_PRIVQS(
+ rp, mp,
+ {
+ if (ERTS_SIG_IS_MSG(mp) && mp->data.attached)
+ total_heap_size += erts_msg_attached_data_size(mp);
+ });
+
+ if (rp->sig_qs.len > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += rp->sig_qs.len / 4;
+ }
(void) erts_bld_uint(NULL, &hsz, total_heap_size);
hp = HAlloc(BIF_P, hsz);
@@ -1451,6 +1658,12 @@ process_info_aux(Process *BIF_P,
(void) erts_bld_uint(NULL, &hsz, size);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, size);
+
+ if (rp->sig_qs.len > CONTEXT_REDS*4)
+ *reds += CONTEXT_REDS*4;
+ else
+ *reds += rp->sig_qs.len / 4;
+
break;
}
@@ -1523,10 +1736,14 @@ process_info_aux(Process *BIF_P,
break;
}
- case am_priority:
+ case am_priority: {
+ erts_aint32_t state = erts_atomic32_read_nob(&rp->state);
+ if (ERTS_PSFLG_EXITING & state)
+ return am_undefined;
hp = HAlloc(BIF_P, 3);
- res = erts_get_process_priority(rp);
+ res = erts_get_process_priority(state);
break;
+ }
case am_trace:
hp = HAlloc(BIF_P, 3);
@@ -1629,6 +1846,8 @@ process_info_aux(Process *BIF_P,
(void) bld_magic_ref_bin_list(NULL, &sz, &MSO(rp));
hp = HAlloc(BIF_P, sz);
res = bld_magic_ref_bin_list(&hp, NULL, &MSO(rp));
+
+ *reds += 10;
break;
}
@@ -2863,6 +3082,16 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
BIF_ERROR(BIF_P, BADARG);
}
+static void monitor_size(ErtsMonitor *mon, void *vsz)
+{
+ *((Uint *) vsz) = erts_monitor_size(mon);
+}
+
+static void link_size(ErtsMonitor *lnk, void *vsz)
+{
+ *((Uint *) vsz) = erts_link_size(lnk);
+}
+
/**********************************************************************/
/* Return information on ports */
/* Info:
@@ -2898,7 +3127,7 @@ erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt,
INIT_MONITOR_INFOS(mic);
- erts_doforall_links(ERTS_P_LINKS(prt), &collect_one_link, &mic);
+ erts_link_tree_foreach(ERTS_P_LINKS(prt), collect_one_link, (void *) &mic);
if (szp)
*szp += mic.sz;
@@ -2922,11 +3151,11 @@ erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt,
else if (item == am_monitors) {
MonitorInfoCollection mic;
int i;
- Eterm item;
INIT_MONITOR_INFOS(mic);
- erts_doforall_monitors(ERTS_P_MONITORS(prt),
- &collect_one_origin_monitor, &mic);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(prt),
+ collect_one_origin_monitor,
+ (void *) &mic);
if (szp)
*szp += mic.sz;
@@ -2935,11 +3164,10 @@ erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt,
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
Eterm t;
- Eterm m_type;
- item = STORE_NC(hpp, ohp, mic.mi[i].entity.term);
- m_type = is_port(item) ? am_port : am_process;
- t = TUPLE2(*hpp, m_type, item);
+ ASSERT(mic.mi[i].type == ERTS_MON_TYPE_PORT);
+ ASSERT(is_internal_pid(mic.mi[i].entity.term));
+ t = TUPLE2(*hpp, am_process, mic.mi[i].entity.term);
*hpp += 3;
res = CONS(*hpp, t, res);
*hpp += 2;
@@ -2958,15 +3186,19 @@ erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt,
Eterm item;
INIT_MONITOR_INFOS(mic);
- erts_doforall_monitors(ERTS_P_MONITORS(prt),
- &collect_one_target_monitor, &mic);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(prt),
+ collect_one_target_monitor,
+ (void *) &mic);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(prt),
+ collect_one_target_monitor,
+ (void *) &mic);
if (szp)
*szp += mic.sz;
if (hpp) {
res = NIL;
for (i = 0; i < mic.mi_i; ++i) {
- ASSERT(mic.mi[i].node == NIL);
+ ASSERT(mic.mi[i].type != ERTS_MON_TYPE_RESOURCE);
item = STORE_NC(hpp, ohp, mic.mi[i].entity.term);
res = CONS(*hpp, item, res);
*hpp += 2;
@@ -3043,7 +3275,12 @@ erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt,
*/
Uint size = 0;
- erts_doforall_links(ERTS_P_LINKS(prt), &erts_one_link_size, &size);
+ erts_link_tree_foreach(ERTS_P_LINKS(prt),
+ link_size, (void *) &size);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(prt),
+ monitor_size, (void *) &size);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(prt),
+ monitor_size, (void *) &size);
size += erts_port_data_size(prt);
@@ -3278,8 +3515,7 @@ BIF_RETTYPE is_process_alive_1(BIF_ALIST_1)
BIF_RET(am_false);
}
else {
- if (erts_atomic32_read_acqb(&rp->state)
- & (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING))
+ if (erts_atomic32_read_acqb(&rp->state) & ERTS_PSFLG_EXITING)
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_false);
else
BIF_RET(am_true);
@@ -3311,16 +3547,6 @@ BIF_RETTYPE process_display_2(BIF_ALIST_2)
if (rp == ERTS_PROC_LOCK_BUSY)
ERTS_BIF_YIELD2(bif_export[BIF_process_display_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
- if (rp != BIF_P && ERTS_PROC_PENDING_EXIT(rp)) {
- Eterm args[2] = {BIF_ARG_1, BIF_ARG_2};
- erts_proc_unlock(rp, ERTS_PROC_LOCKS_ALL);
- ERTS_BIF_AWAIT_X_APPLY_TRAP(BIF_P,
- BIF_ARG_1,
- am_erlang,
- am_process_display,
- args,
- 2);
- }
erts_stack_dump(ERTS_PRINT_STDERR, NULL, rp);
erts_proc_unlock(rp, (BIF_P == rp
? ERTS_PROC_LOCKS_ALL_MINOR
@@ -3693,22 +3919,59 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
BIF_RET(erts_process_status(NULL, tp[2]));
}
}
+ else if (ERTS_IS_ATOM_STR("connection_id", tp[1])) {
+ DistEntry *dep;
+ Eterm *hp, res;
+ Uint con_id, hsz = 0;
+ if (!is_atom(tp[2]))
+ BIF_ERROR(BIF_P, BADARG);
+ dep = erts_sysname_to_connected_dist_entry(tp[2]);
+ if (!dep)
+ BIF_ERROR(BIF_P, BADARG);
+ erts_de_rlock(dep);
+ con_id = (Uint) dep->connection_id;
+ erts_de_runlock(dep);
+ (void) erts_bld_uint(NULL, &hsz, con_id);
+ hp = hsz ? HAlloc(BIF_P, hsz) : NULL;
+ res = erts_bld_uint(&hp, NULL, con_id);
+ BIF_RET(res);
+ }
else if (ERTS_IS_ATOM_STR("link_list", tp[1])) {
/* Used by erl_link_SUITE (emulator) */
if(is_internal_pid(tp[2])) {
+ erts_aint32_t state;
Eterm res;
Process *p;
+ int sigs_done, local_only;
p = erts_pid2proc(BIF_P,
ERTS_PROC_LOCK_MAIN,
tp[2],
- ERTS_PROC_LOCK_LINK);
+ ERTS_PROC_LOCK_MAIN);
if (!p) {
ERTS_ASSERT_IS_NOT_EXITING(BIF_P);
BIF_RET(am_undefined);
}
- res = make_link_list(BIF_P, ERTS_P_LINKS(p), NIL);
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+
+ local_only = 0;
+ do {
+ int reds = CONTEXT_REDS;
+ sigs_done = erts_proc_sig_handle_incoming(p,
+ &state,
+ &reds,
+ CONTEXT_REDS,
+ local_only);
+ local_only = !0;
+ } while (!sigs_done && !(state & ERTS_PSFLG_EXITING));
+
+ if (!(state & ERTS_PSFLG_EXITING))
+ res = make_link_list(BIF_P, 1, ERTS_P_LINKS(p), NIL);
+ else if (BIF_P == p)
+ ERTS_BIF_EXITED(BIF_P);
+ else
+ res = am_undefined;
+ if (BIF_P != p)
+ erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
}
else if(is_internal_port(tp[2])) {
@@ -3719,19 +3982,20 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
ERTS_PORT_SFLGS_INVALID_LOOKUP);
if(!p)
BIF_RET(am_undefined);
- res = make_link_list(BIF_P, ERTS_P_LINKS(p), NIL);
+ res = make_link_list(BIF_P, 1, ERTS_P_LINKS(p), NIL);
erts_port_release(p);
BIF_RET(res);
}
else if(is_node_name_atom(tp[2])) {
DistEntry *dep = erts_find_dist_entry(tp[2]);
if(dep) {
- Eterm subres;
- erts_de_links_lock(dep);
- subres = make_link_list(BIF_P, dep->nlinks, NIL);
- subres = make_link_list(BIF_P, dep->node_links, subres);
- erts_de_links_unlock(dep);
- BIF_RET(subres);
+ Eterm res = NIL;
+ if (dep->mld) {
+ erts_mtx_lock(&dep->mld->mtx);
+ res = make_link_list(BIF_P, 0, dep->mld->links, NIL);
+ erts_mtx_unlock(&dep->mld->mtx);
+ }
+ BIF_RET(res);
} else {
BIF_RET(am_undefined);
}
@@ -3740,27 +4004,54 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
else if (ERTS_IS_ATOM_STR("monitor_list", tp[1])) {
/* Used by erl_link_SUITE (emulator) */
if(is_internal_pid(tp[2])) {
+ erts_aint32_t state;
Process *p;
Eterm res;
+ int sigs_done, local_only;
p = erts_pid2proc(BIF_P,
ERTS_PROC_LOCK_MAIN,
tp[2],
- ERTS_PROC_LOCK_LINK);
+ ERTS_PROC_LOCK_MAIN);
if (!p) {
ERTS_ASSERT_IS_NOT_EXITING(BIF_P);
BIF_RET(am_undefined);
}
- res = make_monitor_list(BIF_P, ERTS_P_MONITORS(p));
- erts_proc_unlock(p, ERTS_PROC_LOCK_LINK);
+
+ local_only = 0;
+ do {
+ int reds = CONTEXT_REDS;
+ sigs_done = erts_proc_sig_handle_incoming(p,
+ &state,
+ &reds,
+ CONTEXT_REDS,
+ local_only);
+ local_only = !0;
+ } while (!sigs_done && !(state & ERTS_PSFLG_EXITING));
+
+ if (!(state & ERTS_PSFLG_EXITING)) {
+ res = make_monitor_list(BIF_P, 1, ERTS_P_MONITORS(p), NIL);
+ res = make_monitor_list(BIF_P, 0, ERTS_P_LT_MONITORS(p), res);
+ }
+ else {
+ if (BIF_P == p)
+ ERTS_BIF_EXITED(BIF_P);
+ else
+ res = am_undefined;
+ }
+ if (BIF_P != p)
+ erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
} else if(is_node_name_atom(tp[2])) {
DistEntry *dep = erts_find_dist_entry(tp[2]);
if(dep) {
- Eterm ml;
- erts_de_links_lock(dep);
- ml = make_monitor_list(BIF_P, dep->monitors);
- erts_de_links_unlock(dep);
+ Eterm ml = NIL;
+ if (dep->mld) {
+ erts_mtx_lock(&dep->mld->mtx);
+ ml = make_monitor_list(BIF_P, 1, dep->mld->orig_name_monitors, NIL);
+ ml = make_monitor_list(BIF_P, 0, dep->mld->monitors, ml);
+ erts_mtx_unlock(&dep->mld->mtx);
+ }
BIF_RET(ml);
} else {
BIF_RET(am_undefined);
@@ -3778,18 +4069,6 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
}
BIF_RET(res);
}
- else if (ERTS_IS_ATOM_STR("have_pending_exit", tp[1])) {
- Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
- tp[2], ERTS_PROC_LOCK_STATUS);
- if (!rp) {
- BIF_RET(am_undefined);
- }
- else {
- Eterm res = ERTS_PROC_PENDING_EXIT(rp) ? am_true : am_false;
- erts_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
- BIF_RET(res);
- }
- }
else if (ERTS_IS_ATOM_STR("binary_info", tp[1])) {
Eterm bin = tp[2];
if (is_binary(bin)) {
@@ -4116,57 +4395,6 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
erts_set_gc_state(BIF_P, enable);
BIF_RET(res);
}
- else if (ERTS_IS_ATOM_STR("send_fake_exit_signal", BIF_ARG_1)) {
- /* Used by signal_SUITE (emulator) */
-
- /* Testcases depend on the exit being received via
- a pending exit when the receiver is the same as
- the caller. */
- if (is_tuple(BIF_ARG_2)) {
- Eterm* tp = tuple_val(BIF_ARG_2);
- if (arityval(tp[0]) == 3
- && (is_pid(tp[1]) || is_port(tp[1]))
- && is_internal_pid(tp[2])) {
- int xres;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
- Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
- tp[2], rp_locks);
- if (!rp) {
- DECL_AM(dead);
- BIF_RET(AM_dead);
- }
-
- if (BIF_P == rp)
- rp_locks |= ERTS_PROC_LOCK_MAIN;
- xres = erts_send_exit_signal(NULL, /* NULL in order to
- force a pending exit
- when we send to our
- selves. */
- tp[1],
- rp,
- &rp_locks,
- tp[3],
- NIL,
- NULL,
- 0);
- if (BIF_P == rp)
- rp_locks &= ~ERTS_PROC_LOCK_MAIN;
- erts_proc_unlock(rp, rp_locks);
- if (xres > 1) {
- DECL_AM(message);
- BIF_RET(AM_message);
- }
- else if (xres == 0) {
- DECL_AM(unaffected);
- BIF_RET(AM_unaffected);
- }
- else {
- DECL_AM(exit);
- BIF_RET(AM_exit);
- }
- }
- }
- }
else if (ERTS_IS_ATOM_STR("colliding_names", BIF_ARG_1)) {
/* Used by ets_SUITE (stdlib) */
if (is_tuple(BIF_ARG_2)) {
diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index 1feb892b93..7fe4e02782 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2001-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2001-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -43,6 +43,7 @@
#include "erl_bits.h"
#include "erl_bif_unique.h"
#include "dtrace-wrapper.h"
+#include "erl_proc_sig_queue.h"
static Port *open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump);
static int merge_global_environment(erts_osenv_t *env, Eterm key_value_pairs);
@@ -53,10 +54,13 @@ char *erts_default_arg0 = "default";
BIF_RETTYPE erts_internal_open_port_2(BIF_ALIST_2)
{
+ BIF_RETTYPE ret;
Port *port;
Eterm res;
char *str;
int err_type, err_num;
+ ErtsLinkData *ldp;
+ ErtsLink *lnk;
port = open_port(BIF_P, BIF_ARG_1, BIF_ARG_2, &err_type, &err_num);
if (!port) {
@@ -78,6 +82,16 @@ BIF_RETTYPE erts_internal_open_port_2(BIF_ALIST_2)
BIF_RET(res);
}
+ ldp = erts_link_create(ERTS_LNK_TYPE_PORT, BIF_P->common.id, port->common.id);
+ ASSERT(ldp->a.other.item == port->common.id);
+ ASSERT(ldp->b.other.item == BIF_P->common.id);
+ /*
+ * This link should not already be present, but can potentially
+ * due to id wrapping...
+ */
+ lnk = erts_link_tree_lookup_insert(&ERTS_P_LINKS(BIF_P), &ldp->a);
+ erts_link_tree_insert(&ERTS_P_LINKS(port), &ldp->b);
+
if (port->drv_ptr->flags & ERL_DRV_FLAG_USE_INIT_ACK) {
/* Copied from erl_port_task.c */
@@ -86,39 +100,30 @@ BIF_RETTYPE erts_internal_open_port_2(BIF_ALIST_2)
erts_make_ref_in_array(port->async_open_port->ref);
port->async_open_port->to = BIF_P->common.id;
- erts_proc_lock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE | ERTS_PROC_LOCK_LINK);
- if (ERTS_PROC_PENDING_EXIT(BIF_P)) {
- /* need to exit caller instead */
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE | ERTS_PROC_LOCK_LINK);
- KILL_CATCHES(BIF_P);
- BIF_P->freason = EXC_EXIT;
- erts_port_release(port);
- BIF_RET(am_badarg);
- }
-
- ERTS_MSGQ_MV_INQ2PRIVQ(BIF_P);
- BIF_P->msg.save = BIF_P->msg.last;
-
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCKS_MSG_RECEIVE);
+ /*
+ * We unconditionaly *must* do a receive on a message
+ * containing the reference after this...
+ */
+ ERTS_RECV_MARK_SAVE(BIF_P);
+ ERTS_RECV_MARK_SET(BIF_P);
res = erts_proc_store_ref(BIF_P, port->async_open_port->ref);
} else {
res = port->common.id;
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
}
- erts_add_link(&ERTS_P_LINKS(port), LINK_PID, BIF_P->common.id);
- erts_add_link(&ERTS_P_LINKS(BIF_P), LINK_PID, port->common.id);
-
if (IS_TRACED_FL(BIF_P, F_TRACE_PROCS))
- trace_proc(BIF_P, ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK, BIF_P,
+ trace_proc(BIF_P, ERTS_PROC_LOCK_MAIN, BIF_P,
am_link, port->common.id);
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
+ ERTS_BIF_PREP_RET(ret, res);
erts_port_release(port);
- BIF_RET(res);
+ if (lnk)
+ erts_link_release(lnk);
+
+ return ret;
}
static ERTS_INLINE Port *
@@ -195,7 +200,6 @@ BIF_RETTYPE erts_internal_port_command_3(BIF_ALIST_3)
#endif
switch (erts_port_output(BIF_P, flags, prt, prt->common.id, BIF_ARG_2, &ref)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
case ERTS_PORT_OP_DROPPED:
ERTS_BIF_PREP_RET(res, am_badarg);
@@ -254,7 +258,6 @@ BIF_RETTYPE erts_internal_port_call_3(BIF_ALIST_3)
op = (unsigned int) uint_op;
switch (erts_port_call(BIF_P, prt, op, BIF_ARG_3, &retval)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_DROPPED:
case ERTS_PORT_OP_BADARG:
retval = am_badarg;
@@ -272,11 +275,8 @@ BIF_RETTYPE erts_internal_port_call_3(BIF_ALIST_3)
}
state = erts_atomic32_read_acqb(&BIF_P->state);
- if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
- if (state & ERTS_PSFLG_PENDING_EXIT)
- erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
+ if (state & ERTS_PSFLG_EXITING)
ERTS_BIF_EXITED(BIF_P);
- }
BIF_RET(retval);
}
@@ -302,7 +302,6 @@ BIF_RETTYPE erts_internal_port_control_3(BIF_ALIST_3)
op = (unsigned int) uint_op;
switch (erts_port_control(BIF_P, prt, op, BIF_ARG_3, &retval)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
case ERTS_PORT_OP_DROPPED:
retval = am_badarg;
@@ -320,11 +319,8 @@ BIF_RETTYPE erts_internal_port_control_3(BIF_ALIST_3)
}
state = erts_atomic32_read_acqb(&BIF_P->state);
- if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
- if (state & ERTS_PSFLG_PENDING_EXIT)
- erts_handle_pending_exit(BIF_P, ERTS_PROC_LOCK_MAIN);
+ if (state & ERTS_PSFLG_EXITING)
ERTS_BIF_EXITED(BIF_P);
- }
BIF_RET(retval);
}
@@ -347,7 +343,6 @@ BIF_RETTYPE erts_internal_port_close_1(BIF_ALIST_1)
BIF_RET(am_badarg);
switch (erts_port_exit(BIF_P, 0, prt, BIF_P->common.id, am_normal, &ref)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
case ERTS_PORT_OP_DROPPED:
BIF_RET(am_badarg);
@@ -380,7 +375,6 @@ BIF_RETTYPE erts_internal_port_connect_2(BIF_ALIST_2)
#endif
switch (erts_port_connect(BIF_P, 0, prt, BIF_P->common.id, BIF_ARG_2, &ref)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
case ERTS_PORT_OP_DROPPED:
BIF_RET(am_badarg);
@@ -418,7 +412,6 @@ BIF_RETTYPE erts_internal_port_info_1(BIF_ALIST_1)
}
switch (erts_port_info(BIF_P, prt, THE_NON_VALUE, &retval)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
BIF_RET(am_badarg);
case ERTS_PORT_OP_DROPPED:
@@ -457,7 +450,6 @@ BIF_RETTYPE erts_internal_port_info_2(BIF_ALIST_2)
}
switch (erts_port_info(BIF_P, prt, BIF_ARG_2, &retval)) {
- case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
BIF_RET(am_badarg);
case ERTS_PORT_OP_DROPPED:
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index 22942b40c4..a076f0bf54 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1999-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1999-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -40,6 +40,7 @@
#include "erl_binary.h"
#include "erl_thr_progress.h"
#include "erl_bif_unique.h"
+#include "erl_proc_sig_queue.h"
#define DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 956662aefa..3982b87e34 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1998-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1998-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -38,6 +38,7 @@
#include "erl_binary.h"
#include "erl_map.h"
#include "erl_thr_progress.h"
+#include "erl_proc_sig_queue.h"
#include "erl_db_util.h"
@@ -155,6 +156,7 @@ set_tracee_flags(Process *tracee_p, ErtsTracer tracer,
: am_false);
erts_tracer_replace(&tracee_p->common, tracer);
ERTS_TRACE_FLAGS(tracee_p) = flags;
+
return ret;
}
/*
diff --git a/erts/emulator/beam/erl_debug.c b/erts/emulator/beam/erl_debug.c
index bf8244564a..db78378257 100644
--- a/erts/emulator/beam/erl_debug.c
+++ b/erts/emulator/beam/erl_debug.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1998-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1998-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -404,15 +404,16 @@ void verify_process(Process *p)
erts_exit(ERTS_ERROR_EXIT,"Wild pointer found in " name " of %T!\n",p->common.id); }
- ErtsMessage* mp = p->msg.first;
-
VERBOSE(DEBUG_MEMORY,("Verify process: %T...\n",p->common.id));
- while (mp != NULL) {
- VERIFY_ETERM("message term",ERL_MESSAGE_TERM(mp));
- VERIFY_ETERM("message token",ERL_MESSAGE_TOKEN(mp));
- mp = mp->next;
- }
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_MSG(mp)) {
+ VERIFY_ETERM("message term",ERL_MESSAGE_TERM(mp));
+ VERIFY_ETERM("message token",ERL_MESSAGE_TOKEN(mp));
+ }
+ });
erts_check_stack(p);
erts_check_heap(p);
@@ -532,16 +533,15 @@ static void print_process_memory(Process *p)
erts_printf("-- %-*s ---%s-%s-%s-%s--\n",
PTR_SIZE, "PCB", dashes, dashes, dashes, dashes);
- if (p->msg.first != NULL) {
- ErtsMessage* mp;
- erts_printf(" Message Queue:\n");
- mp = p->msg.first;
- while (mp != NULL) {
- erts_printf("| 0x%0*lx | 0x%0*lx |\n",PTR_SIZE,
- ERL_MESSAGE_TERM(mp),PTR_SIZE,ERL_MESSAGE_TOKEN(mp));
- mp = mp->next;
- }
- }
+
+ erts_printf(" Message Queue:\n");
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_MSG(mp))
+ erts_printf("| 0x%0*lx | 0x%0*lx |\n",PTR_SIZE,
+ ERL_MESSAGE_TERM(mp),PTR_SIZE,ERL_MESSAGE_TOKEN(mp));
+ });
if (p->dictionary != NULL) {
int n = ERTS_PD_SIZE(p->dictionary);
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index 1c64644efc..5da8e3eda5 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2002-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2002-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -43,6 +43,7 @@
#include "erl_bif_unique.h"
#include "dist.h"
#include "erl_nfunc_sched.h"
+#include "erl_proc_sig_queue.h"
#define ERTS_INACT_WR_PB_LEAVE_MUCH_LIMIT 1
#define ERTS_INACT_WR_PB_LEAVE_MUCH_PERCENTAGE 20
@@ -154,7 +155,6 @@ static void offset_rootset(Process *p, Sint offs, char* area, Uint area_size,
Eterm* objv, int nobj);
static void offset_off_heap(Process* p, Sint offs, char* area, Uint area_size);
static void offset_mqueue(Process *p, Sint offs, char* area, Uint area_size);
-static void move_msgq_to_heap(Process *p);
static int reached_max_heap_size(Process *p, Uint total_heap_size,
Uint extra_heap_size, Uint extra_old_heap_size);
static void init_gc_info(ErtsGCInfo *gcip);
@@ -189,6 +189,21 @@ static struct {
ErtsGCInfo info;
} dirty_gc;
+static void move_msgs_to_heap(Process *c_p)
+{
+ Uint64 pre_oh, post_oh;
+
+ pre_oh = c_p->off_heap.overhead;
+ erts_proc_sig_move_msgs_to_heap(c_p);
+ post_oh = c_p->off_heap.overhead;
+
+ if (pre_oh != post_oh) {
+ /* Got new binaries; update bin vheap size... */
+ c_p->bin_vheap_sz = next_vheap_size(c_p, post_oh,
+ c_p->bin_vheap_sz);
+ }
+}
+
static ERTS_INLINE int
gc_cost(Uint gc_moved_live_words, Uint resize_moved_words)
{
@@ -565,20 +580,26 @@ young_gen_usage(Process *p)
hsz = p->mbuf_sz;
if (p->flags & F_ON_HEAP_MSGQ) {
- ErtsMessage *mp;
- for (mp = p->msg.first; mp; mp = mp->next) {
- /*
- * We leave not yet decoded distribution messages
- * as they are in the queue since it is not
- * possible to determine a maximum size until
- * actual decoding. However, we use their estimated
- * size when calculating need, and by this making
- * it more likely that they will fit on the heap
- * when actually decoded.
- */
- if (mp->data.attached)
- hsz += erts_msg_attached_data_size(mp);
- }
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ /*
+ * We leave not yet decoded distribution messages
+ * as they are in the queue since it is not
+ * possible to determine a maximum size until
+ * actual decoding. However, we use their estimated
+ * size when calculating need, and by this making
+ * it more likely that they will fit on the heap
+ * when actually decoded.
+ *
+ * We however ignore off heap messages...
+ */
+ if (ERTS_SIG_IS_MSG(mp)
+ && mp->data.attached
+ && mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ hsz += erts_msg_attached_data_size(mp);
+ }
+ });
}
hsz += p->htop - p->heap;
@@ -621,7 +642,7 @@ check_for_possibly_long_gc(Process *p, Uint ygen_usage)
sz = ygen_usage;
sz += p->hend - p->stop;
if (p->flags & F_ON_HEAP_MSGQ)
- sz += p->msg.len;
+ sz += p->sig_qs.len;
if (major)
sz += p->old_htop - p->old_heap;
@@ -761,13 +782,9 @@ do_major_collection:
long_gc/large_gc triggers when this happens as process was
killed before a GC could be done. */
if (reds == -2) {
- ErtsProcLocks locks = ERTS_PROC_LOCKS_ALL;
int res;
- erts_proc_lock(p, ERTS_PROC_LOCKS_ALL_MINOR);
- erts_send_exit_signal(p, p->common.id, p, &locks,
- am_kill, NIL, NULL, 0);
- erts_proc_unlock(p, locks & ERTS_PROC_LOCKS_ALL_MINOR);
+ erts_set_self_exiting(p, am_killed);
delay_gc_after_start:
/* erts_send_exit_signal looks for ERTS_PSFLG_GC, so
@@ -1375,7 +1392,7 @@ minor_collection(Process* p, ErlHeapFragment *live_hf_end,
new_sz, objv, nobj);
if (p->flags & F_ON_HEAP_MSGQ)
- move_msgq_to_heap(p);
+ move_msgs_to_heap(p);
new_mature = p->old_htop - prev_old_htop;
@@ -1760,7 +1777,7 @@ major_collection(Process* p, ErlHeapFragment *live_hf_end,
HIGH_WATER(p) = HEAP_TOP(p);
if (p->flags & F_ON_HEAP_MSGQ)
- move_msgq_to_heap(p);
+ move_msgs_to_heap(p);
ErtsGcQuickSanityCheck(p);
@@ -2332,9 +2349,9 @@ collect_live_heap_frags(Process* p, ErlHeapFragment *live_hf_end, Eterm* n_htop)
return n_htop;
}
-static ERTS_INLINE void
-copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
- ErlHeapFragment *bp, Eterm *refs, int nrefs)
+void
+erts_copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
+ ErlHeapFragment *bp, Eterm *refs, int nrefs)
{
Uint sz;
int i;
@@ -2440,61 +2457,6 @@ copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
bp->off_heap.first = NULL;
}
-static void
-move_msgq_to_heap(Process *p)
-{
-
- ErtsMessage **mpp = &p->msg.first;
- Uint64 pre_oh = MSO(p).overhead;
-
- while (*mpp) {
- ErtsMessage *mp = *mpp;
-
- if (mp->data.attached) {
- ErlHeapFragment *bp;
-
- /*
- * We leave not yet decoded distribution messages
- * as they are in the queue since it is not
- * possible to determine a maximum size until
- * actual decoding...
- */
- if (is_value(ERL_MESSAGE_TERM(mp))) {
-
- bp = erts_message_to_heap_frag(mp);
-
- if (bp->next)
- erts_move_multi_frags(&p->htop, &p->off_heap, bp,
- mp->m, ERL_MESSAGE_REF_ARRAY_SZ, 0);
- else
- copy_one_frag(&p->htop, &p->off_heap, bp,
- mp->m, ERL_MESSAGE_REF_ARRAY_SZ);
-
- if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
- mp->data.heap_frag = NULL;
- free_message_buffer(bp);
- }
- else {
- ErtsMessage *new_mp = erts_alloc_message(0, NULL);
- sys_memcpy((void *) new_mp->m, (void *) mp->m,
- sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ);
- erts_msgq_replace_msg_ref(&p->msg, new_mp, mpp);
- mp->next = NULL;
- erts_cleanup_messages(mp);
- mp = new_mp;
- }
- }
- }
-
- mpp = &(*mpp)->next;
- }
-
- if (pre_oh != MSO(p).overhead) {
- /* Got new binaries; update vheap size... */
- BIN_VHEAP_SZ(p) = next_vheap_size(p, MSO(p).overhead, BIN_VHEAP_SZ(p));
- }
-}
-
static Uint
setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
{
@@ -2583,11 +2545,10 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
* We do not have off heap message queue enabled, i.e. we
* need to add message queue to rootset...
*/
- ErtsMessage *mp;
/* Ensure large enough rootset... */
- if (n + p->msg.len > rootset->size) {
- Uint new_size = n + p->msg.len;
+ if (n + p->sig_qs.len > rootset->size) {
+ Uint new_size = n + p->sig_qs.len;
ERTS_GC_ASSERT(roots == rootset->def);
roots = erts_alloc(ERTS_ALC_T_ROOTSET,
new_size*sizeof(Roots));
@@ -2595,18 +2556,19 @@ setup_rootset(Process *p, Eterm *objv, int nobj, Rootset *rootset)
rootset->size = new_size;
}
- for (mp = p->msg.first; mp; mp = mp->next) {
-
- if (!mp->data.attached) {
- /*
- * Message may refer data on heap;
- * add it to rootset...
- */
- roots[n].v = mp->m;
- roots[n].sz = ERL_MESSAGE_REF_ARRAY_SZ;
- n++;
- }
- }
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_INTERNAL_MSG(mp) && !mp->data.attached) {
+ /*
+ * Message may refer data on heap;
+ * add it to rootset...
+ */
+ roots[n].v = mp->m;
+ roots[n].sz = ERL_MESSAGE_REF_ARRAY_SZ;
+ n++;
+ }
+ });
break;
}
}
@@ -3117,51 +3079,59 @@ offset_off_heap(Process* p, Sint offs, char* area, Uint area_size)
}
}
+#ifndef USE_VM_PROBES
+#define ERTS_OFFSET_DT_UTAG(MP, A, ASZ, O)
+#else
+#define ERTS_OFFSET_DT_UTAG(MP, A, ASZ, O) \
+ do { \
+ Eterm utag__ = ERL_MESSAGE_DT_UTAG((MP)); \
+ if (is_boxed(utag__) && ErtsInArea(ptr_val(utag__), (A), (ASZ))) { \
+ ERL_MESSAGE_DT_UTAG((MP)) = offset_ptr(utag__, (O)); \
+ } \
+ } while (0)
+#endif
+
+static ERTS_INLINE void
+offset_message(ErtsMessage *mp, Sint offs, char* area, Uint area_size)
+{
+ Eterm mesg = ERL_MESSAGE_TERM(mp);
+ if (ERTS_SIG_IS_MSG_TAG(mesg)) {
+ if (ERTS_SIG_IS_INTERNAL_MSG_TAG(mesg)) {
+ switch (primary_tag(mesg)) {
+ case TAG_PRIMARY_LIST:
+ case TAG_PRIMARY_BOXED:
+ if (ErtsInArea(ptr_val(mesg), area, area_size)) {
+ ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs);
+ }
+ break;
+ }
+ }
+ mesg = ERL_MESSAGE_TOKEN(mp);
+ if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
+ ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs);
+ }
+
+ ERTS_OFFSET_DT_UTAG(mp, area, area_size, offs);
+
+ ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) ||
+ is_tuple(ERL_MESSAGE_TOKEN(mp)) ||
+ is_atom(ERL_MESSAGE_TOKEN(mp))));
+ }
+}
+
/*
* Offset pointers in message queue.
*/
static void
offset_mqueue(Process *p, Sint offs, char* area, Uint area_size)
{
- ErtsMessage* mp = p->msg.first;
-
- if ((p->flags & (F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG)) != F_OFF_HEAP_MSGQ) {
-
- while (mp != NULL) {
- Eterm mesg = ERL_MESSAGE_TERM(mp);
- if (is_value(mesg)) {
- switch (primary_tag(mesg)) {
- case TAG_PRIMARY_LIST:
- case TAG_PRIMARY_BOXED:
- if (ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_TERM(mp) = offset_ptr(mesg, offs);
- }
- break;
- }
- }
- mesg = ERL_MESSAGE_TOKEN(mp);
- if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_TOKEN(mp) = offset_ptr(mesg, offs);
- }
-#ifdef USE_VM_PROBES
- mesg = ERL_MESSAGE_DT_UTAG(mp);
- if (is_boxed(mesg) && ErtsInArea(ptr_val(mesg), area, area_size)) {
- ERL_MESSAGE_DT_UTAG(mp) = offset_ptr(mesg, offs);
- }
-#endif
-
- ASSERT((is_nil(ERL_MESSAGE_TOKEN(mp)) ||
- is_tuple(ERL_MESSAGE_TOKEN(mp)) ||
- is_atom(ERL_MESSAGE_TOKEN(mp))));
- mp = mp->next;
- }
-
- }
+ if ((p->flags & (F_OFF_HEAP_MSGQ|F_OFF_HEAP_MSGQ_CHNG)) != F_OFF_HEAP_MSGQ)
+ ERTS_FOREACH_SIG_PRIVQS(p, mp, offset_message(mp, offs, area, area_size));
}
static void ERTS_INLINE
offset_one_rootset(Process *p, Sint offs, char* area, Uint area_size,
- Eterm* objv, int nobj)
+ Eterm* objv, int nobj)
{
Eterm *v;
Uint sz;
@@ -3378,7 +3348,6 @@ erts_process_gc_info(Process *p, Uint *sizep, Eterm **hpp,
};
Eterm res = THE_NON_VALUE;
- ErtsMessage *mp;
ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(*tags));
ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == ERTS_PROCESS_GC_INFO_MAX_TERMS);
@@ -3397,9 +3366,15 @@ erts_process_gc_info(Process *p, Uint *sizep, Eterm **hpp,
be the same as adding old_heap_block_size + heap_block_size
+ mbuf_size.
*/
- for (mp = p->msg.first; mp; mp = mp->next)
- if (mp->data.attached)
- values[2] += erts_msg_attached_data_size(mp);
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_MSG(mp)
+ && mp->data.attached
+ && mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ values[2] += erts_msg_attached_data_size(mp);
+ }
+ });
}
res = erts_bld_atom_uword_2tup_list(hpp,
diff --git a/erts/emulator/beam/erl_gc.h b/erts/emulator/beam/erl_gc.h
index dec0ab1143..63d03cdf8b 100644
--- a/erts/emulator/beam/erl_gc.h
+++ b/erts/emulator/beam/erl_gc.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2007-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2007-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -181,6 +181,8 @@ void erts_free_heap_frags(struct process* p);
Eterm erts_max_heap_size_map(Sint, Uint, Eterm **, Uint *);
int erts_max_heap_size(Eterm, Uint *, Uint *);
void erts_deallocate_young_generation(Process *c_p);
+void erts_copy_one_frag(Eterm** hpp, ErlOffHeap* off_heap,
+ ErlHeapFragment *bp, Eterm *refs, int nrefs);
#if defined(DEBUG) || defined(ERTS_OFFHEAP_DEBUG)
int erts_dbg_within_proc(Eterm *ptr, Process *p, Eterm* real_htop);
#endif
diff --git a/erts/emulator/beam/erl_hl_timer.c b/erts/emulator/beam/erl_hl_timer.c
index bda2c9b94d..6ec6f8065e 100644
--- a/erts/emulator/beam/erl_hl_timer.c
+++ b/erts/emulator/beam/erl_hl_timer.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2015-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2015-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -38,6 +38,7 @@
#define ERTS_WANT_TIMER_WHEEL_API
#include "erl_time.h"
#include "erl_hl_timer.h"
+#include "erl_proc_sig_queue.h"
#ifdef ERTS_MAGIC_REF_BIF_TIMERS
#include "erl_binary.h"
#endif
@@ -2470,28 +2471,21 @@ access_bif_timer(Process *c_p, Eterm tref, int cancel, int async, int info)
req->rrefn[1] = rrefn[1];
req->rrefn[2] = rrefn[2];
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
-
- if (ERTS_PROC_PENDING_EXIT(c_p))
- ERTS_VBUMP_ALL_REDS(c_p);
- else {
- /*
- * Caller needs to wait for a message containing
- * the ref that we just created. No such message
- * can exist in callers message queue at this time.
- * We therefore move the save pointer of the
- * callers message queue to the end of the queue.
- *
- * NOTE: It is of vital importance that the caller
- * immediately do a receive unconditionaly
- * waiting for the message with the reference;
- * otherwise, next receive will *not* work
- * as expected!
- */
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- c_p->msg.save = c_p->msg.last;
- }
- erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
+ /*
+ * Caller needs to wait for a message containing
+ * the ref that we just created. No such message
+ * can exist in callers message queue at this time.
+ * We therefore move the save pointer of the
+ * callers message queue to the end of the queue.
+ *
+ * NOTE: It is of vital importance that the caller
+ * immediately do a receive unconditionaly
+ * waiting for the message with the reference;
+ * otherwise, next receive will *not* work
+ * as expected!
+ */
+ ERTS_RECV_MARK_SAVE(c_p);
+ ERTS_RECV_MARK_SET(c_p);
ERTS_BIF_PREP_TRAP1(ret, erts_await_result, c_p, rref);
}
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 8430a5559b..83ed2e4cd6 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -51,6 +51,8 @@
#include "erl_time.h"
#include "erl_check_io.h"
#include "erl_osenv.h"
+#include "erl_proc_sig_queue.h"
+
#ifdef HIPE
#include "hipe_mode_switch.h" /* for hipe_mode_switch_init() */
#include "hipe_signal.h" /* for hipe_signal_init() */
@@ -126,6 +128,8 @@ const Eterm etp_hole_marker = 0;
static int modified_sched_thread_suggested_stack_size = 0;
+Eterm erts_init_process_id;
+
/*
* Note about VxWorks: All variables must be initialized by executable code,
* not by an initializer. Otherwise a new instance of the emulator will
@@ -304,8 +308,9 @@ erl_init(int ncpu,
int node_tab_delete_delay,
ErtsDbSpinCount db_spin_count)
{
+ erts_monitor_link_init();
+ erts_proc_sig_queue_init();
erts_bif_unique_init();
- erts_init_monitors();
erts_init_time(time_correction, time_warp_mode);
erts_init_sys_common_misc();
erts_init_process(ncpu, proc_tab_sz, legacy_proc_tab);
@@ -413,7 +418,7 @@ erl_first_process_otp(char* modname, void* code, unsigned size, int argc, char**
}
static Eterm
-erl_system_process_otp(Eterm parent_pid, char* modname, int off_heap_msgq)
+erl_system_process_otp(Eterm parent_pid, char* modname, int off_heap_msgq, int prio)
{
Eterm start_mod;
Process* parent;
@@ -428,9 +433,16 @@ erl_system_process_otp(Eterm parent_pid, char* modname, int off_heap_msgq)
parent = erts_pid2proc(NULL, 0, parent_pid, ERTS_PROC_LOCK_MAIN);
- so.flags = erts_default_spo_flags|SPO_SYSTEM_PROC;
+ so.flags = erts_default_spo_flags|SPO_SYSTEM_PROC|SPO_USE_ARGS;
if (off_heap_msgq)
so.flags |= SPO_OFF_HEAP_MSGQ;
+ so.min_heap_size = H_MIN_SIZE;
+ so.min_vheap_size = BIN_VH_MIN_SIZE;
+ so.max_heap_size = H_MAX_SIZE;
+ so.max_heap_flags = H_MAX_FLAGS;
+ so.priority = prio;
+ so.max_gen_gcs = (Uint16) erts_atomic32_read_nob(&erts_max_gen_gcs);
+ so.scheduler = 0;
res = erl_create_process(parent, start_mod, am_start, NIL, &so);
erts_proc_unlock(parent, ERTS_PROC_LOCK_MAIN);
return res;
@@ -1200,7 +1212,6 @@ erl_start(int argc, char **argv)
ErtsTimeWarpMode time_warp_mode;
int node_tab_delete_delay = ERTS_NODE_TAB_DELAY_GC_DEFAULT;
ErtsDbSpinCount db_spin_count = ERTS_DB_SPNCNT_NORMAL;
- Eterm otp_ring0_pid;
set_default_time_adj(&time_correction,
&time_warp_mode);
@@ -2191,8 +2202,8 @@ erl_start(int argc, char **argv)
erts_initialized = 1;
- otp_ring0_pid = erl_first_process_otp("otp_ring0", NULL, 0,
- boot_argc, boot_argv);
+ erts_init_process_id = erl_first_process_otp("otp_ring0", NULL, 0,
+ boot_argc, boot_argv);
{
/*
@@ -2202,14 +2213,18 @@ erl_start(int argc, char **argv)
*/
Eterm pid;
- pid = erl_system_process_otp(otp_ring0_pid, "erts_code_purger", !0);
+ pid = erl_system_process_otp(erts_init_process_id,
+ "erts_code_purger", !0,
+ PRIORITY_NORMAL);
erts_code_purger
= (Process *) erts_ptab_pix2intptr_ddrb(&erts_proc,
internal_pid_index(pid));
ASSERT(erts_code_purger && erts_code_purger->common.id == pid);
erts_proc_inc_refc(erts_code_purger);
- pid = erl_system_process_otp(otp_ring0_pid, "erts_literal_area_collector", !0);
+ pid = erl_system_process_otp(erts_init_process_id,
+ "erts_literal_area_collector",
+ !0, PRIORITY_NORMAL);
erts_literal_area_collector
= (Process *) erts_ptab_pix2intptr_ddrb(&erts_proc,
internal_pid_index(pid));
@@ -2217,14 +2232,35 @@ erl_start(int argc, char **argv)
&& erts_literal_area_collector->common.id == pid);
erts_proc_inc_refc(erts_literal_area_collector);
- pid = erl_system_process_otp(otp_ring0_pid, "erts_dirty_process_code_checker", !0);
- erts_dirty_process_code_checker
+ pid = erl_system_process_otp(erts_init_process_id,
+ "erts_dirty_process_signal_handler",
+ !0, PRIORITY_NORMAL);
+ erts_dirty_process_signal_handler
= (Process *) erts_ptab_pix2intptr_ddrb(&erts_proc,
internal_pid_index(pid));
- ASSERT(erts_dirty_process_code_checker
- && erts_dirty_process_code_checker->common.id == pid);
- erts_proc_inc_refc(erts_dirty_process_code_checker);
-
+ ASSERT(erts_dirty_process_signal_handler
+ && erts_dirty_process_signal_handler->common.id == pid);
+ erts_proc_inc_refc(erts_dirty_process_signal_handler);
+
+ pid = erl_system_process_otp(erts_init_process_id,
+ "erts_dirty_process_signal_handler",
+ !0, PRIORITY_HIGH);
+ erts_dirty_process_signal_handler_high
+ = (Process *) erts_ptab_pix2intptr_ddrb(&erts_proc,
+ internal_pid_index(pid));
+ ASSERT(erts_dirty_process_signal_handler_high
+ && erts_dirty_process_signal_handler_high->common.id == pid);
+ erts_proc_inc_refc(erts_dirty_process_signal_handler_high);
+
+ pid = erl_system_process_otp(erts_init_process_id,
+ "erts_dirty_process_signal_handler",
+ !0, PRIORITY_MAX);
+ erts_dirty_process_signal_handler_max
+ = (Process *) erts_ptab_pix2intptr_ddrb(&erts_proc,
+ internal_pid_index(pid));
+ ASSERT(erts_dirty_process_signal_handler_max
+ && erts_dirty_process_signal_handler_max->common.id == pid);
+ erts_proc_inc_refc(erts_dirty_process_signal_handler_max);
}
erts_start_schedulers();
diff --git a/erts/emulator/beam/erl_lock_check.c b/erts/emulator/beam/erl_lock_check.c
index 773b138d92..0ced5ec310 100644
--- a/erts/emulator/beam/erl_lock_check.c
+++ b/erts/emulator/beam/erl_lock_check.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2005-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2005-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -92,7 +92,6 @@ static erts_lc_lock_order_t erts_lock_order[] = {
{ "db_hash_slot", "address" },
{ "resource_monitors", "address" },
{ "driver_list", NULL },
- { "proc_link", "pid" },
{ "proc_msgq", "pid" },
{ "proc_btm", "pid" },
{ "dist_entry", "address" },
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index 6f7c71ef98..ed7a9d37c2 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -33,6 +33,7 @@
#include "erl_binary.h"
#include "dtrace-wrapper.h"
#include "beam_bp.h"
+#include "erl_proc_sig_queue.h"
ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(message_ref,
ErtsMessageRef,
@@ -207,7 +208,7 @@ erts_cleanup_messages(ErtsMessage *msgp)
while (mp) {
ErtsMessage *fmp;
ErlHeapFragment *bp;
- if (is_non_value(ERL_MESSAGE_TERM(mp))) {
+ if (ERTS_SIG_IS_EXTERNAL_MSG(mp)) {
if (is_not_immed(ERL_MESSAGE_TOKEN(mp))) {
bp = (ErlHeapFragment *) mp->data.dist_ext->ext_endp;
erts_cleanup_offheap(&bp->off_heap);
@@ -215,10 +216,13 @@ erts_cleanup_messages(ErtsMessage *msgp)
if (mp->data.dist_ext)
erts_free_dist_ext_copy(mp->data.dist_ext);
}
- else {
- if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG)
+ else {
+ if (ERTS_SIG_IS_INTERNAL_MSG(mp)
+ && mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
bp = mp->data.heap_frag;
+ }
else {
+ mp->data.attached = ERTS_MSG_COMBINED_HFRAG;
bp = mp->hfrag.next;
erts_cleanup_offheap(&mp->hfrag.off_heap);
}
@@ -272,6 +276,7 @@ erts_queue_dist_message(Process *rcvr,
mp = erts_alloc_message(0, NULL);
mp->data.dist_ext = dist_ext;
+ ERL_MESSAGE_FROM(mp) = dist_ext->dep->sysname;
ERL_MESSAGE_TERM(mp) = THE_NON_VALUE;
#ifdef USE_VM_PROBES
ERL_MESSAGE_DT_UTAG(mp) = NIL;
@@ -294,46 +299,15 @@ erts_queue_dist_message(Process *rcvr,
}
}
+
state = erts_atomic32_read_acqb(&rcvr->state);
- if (state & (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING)) {
+ if (state & ERTS_PSFLG_EXITING) {
if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
/* Drop message if receiver is exiting or has a pending exit ... */
erts_cleanup_messages(mp);
}
- else
- if (IS_TRACED_FL(rcvr, F_TRACE_RECEIVE)) {
- if (from == am_Empty)
- from = dist_ext->dep->sysname;
-
- /* Ahh... need to decode it in order to trace it... */
- if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
- erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
- if (!erts_decode_dist_message(rcvr, rcvr_locks, mp, 0))
- erts_free_message(mp);
- else {
- Eterm msg = ERL_MESSAGE_TERM(mp);
- token = ERL_MESSAGE_TOKEN(mp);
-#ifdef USE_VM_PROBES
- if (DTRACE_ENABLED(message_queued)) {
- DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);
-
- dtrace_proc_str(rcvr, receiver_name);
- if (have_seqtrace(token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
- tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
- tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
- }
- DTRACE6(message_queued,
- receiver_name, size_object(msg), rcvr->msg.len,
- tok_label, tok_lastcnt, tok_serial);
- }
-#endif
- erts_queue_message(rcvr, rcvr_locks, mp, msg, from);
- }
- }
else {
- /* Enqueue message on external format */
#ifdef USE_VM_PROBES
if (DTRACE_ENABLED(message_queued)) {
@@ -359,9 +333,7 @@ erts_queue_dist_message(Process *rcvr,
if (!(rcvr_locks & ERTS_PROC_LOCK_MSGQ))
erts_proc_unlock(rcvr, ERTS_PROC_LOCK_MSGQ);
- erts_proc_notify_new_message(rcvr,
- rcvr_locks
- );
+ erts_proc_notify_new_message(rcvr, rcvr_locks);
}
}
@@ -372,15 +344,14 @@ queue_messages(Process* receiver,
ErtsProcLocks receiver_locks,
ErtsMessage* first,
ErtsMessage** last,
- Uint len,
- Eterm from)
+ Uint len)
{
- ErtsTracingEvent* te;
Sint res;
int locked_msgq = 0;
erts_aint32_t state;
ASSERT(is_value(ERL_MESSAGE_TERM(first)));
+ ASSERT(is_value(ERL_MESSAGE_FROM(first)));
ASSERT(ERL_MESSAGE_TOKEN(first) == am_undefined ||
ERL_MESSAGE_TOKEN(first) == NIL ||
is_tuple(ERL_MESSAGE_TOKEN(first)));
@@ -398,7 +369,7 @@ queue_messages(Process* receiver,
state = *receiver_state;
else
state = erts_atomic32_read_nob(&receiver->state);
- if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT))
+ if (state & ERTS_PSFLG_EXITING)
goto exiting;
need_locks = receiver_locks & ERTS_PROC_LOCKS_HIGHER_THAN(ERTS_PROC_LOCK_MSGQ);
@@ -414,7 +385,7 @@ queue_messages(Process* receiver,
state = erts_atomic32_read_nob(&receiver->state);
- if (state & (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING)) {
+ if (state & ERTS_PSFLG_EXITING) {
exiting:
/* Drop message if receiver is exiting or has a pending exit... */
if (locked_msgq)
@@ -423,7 +394,7 @@ queue_messages(Process* receiver,
return 0;
}
- res = receiver->msg.len;
+ res = receiver->sig_qs.len;
if (receiver_locks & ERTS_PROC_LOCK_MAIN) {
/*
* We move 'in queue' to 'private queue' and place
@@ -433,8 +404,8 @@ queue_messages(Process* receiver,
* we don't need to include the 'in queue' in
* the root set when garbage collecting.
*/
- res += receiver->msg_inq.len;
- ERTS_MSGQ_MV_INQ2PRIVQ(receiver);
+ res += receiver->sig_inq.len;
+ erts_proc_sig_fetch(receiver);
LINK_MESSAGE_PRIVQ(receiver, first, last, len);
}
else
@@ -442,38 +413,6 @@ queue_messages(Process* receiver,
LINK_MESSAGE(receiver, first, last, len);
}
- if (IS_TRACED_FL(receiver, F_TRACE_RECEIVE)
- && (te = &erts_receive_tracing[erts_active_bp_ix()],
- te->on)) {
-
- ErtsMessage *msg = first;
-
-#ifdef USE_VM_PROBES
- if (DTRACE_ENABLED(message_queued)) {
- DTRACE_CHARBUF(receiver_name, DTRACE_TERM_BUF_SIZE);
- Sint tok_label = 0;
- Sint tok_lastcnt = 0;
- Sint tok_serial = 0;
- Eterm seq_trace_token = ERL_MESSAGE_TOKEN(msg);
-
- dtrace_proc_str(receiver, receiver_name);
- if (seq_trace_token != NIL && is_tuple(seq_trace_token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(seq_trace_token));
- tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(seq_trace_token));
- tok_serial = signed_val(SEQ_TRACE_T_SERIAL(seq_trace_token));
- }
- DTRACE6(message_queued,
- receiver_name, size_object(ERL_MESSAGE_TERM(msg)),
- receiver->msg.len,
- tok_label, tok_lastcnt, tok_serial);
- }
-#endif
- while (msg) {
- trace_receive(receiver, from, ERL_MESSAGE_TERM(msg), te);
- msg = msg->next;
- }
-
- }
if (locked_msgq) {
erts_proc_unlock(receiver, ERTS_PROC_LOCK_MSGQ);
}
@@ -489,8 +428,9 @@ queue_message(Process* receiver,
ErtsMessage* mp, Eterm msg, Eterm from)
{
ERL_MESSAGE_TERM(mp) = msg;
+ ERL_MESSAGE_FROM(mp) = from;
return queue_messages(receiver, receiver_state, receiver_locks,
- mp, &mp->next, 1, from);
+ mp, &mp->next, 1);
}
Sint
@@ -503,11 +443,10 @@ erts_queue_message(Process* receiver, ErtsProcLocks receiver_locks,
Sint
erts_queue_messages(Process* receiver, ErtsProcLocks receiver_locks,
- ErtsMessage* first, ErtsMessage** last, Uint len,
- Eterm from)
+ ErtsMessage* first, ErtsMessage** last, Uint len)
{
return queue_messages(receiver, NULL, receiver_locks,
- first, last, len, from);
+ first, last, len);
}
void
@@ -922,70 +861,77 @@ Sint
erts_move_messages_off_heap(Process *c_p)
{
int reds = 1;
+ int i;
+ ErtsMessage *msgq[] = {c_p->sig_qs.first, c_p->sig_qs.cont};
/*
* Move all messages off heap. This *only* occurs when the
* process had off heap message disabled and just enabled
* it...
*/
- ErtsMessage *mp;
- reds += c_p->msg.len / 10;
+ reds += c_p->sig_qs.len / 10;
ASSERT(erts_atomic32_read_nob(&c_p->state)
& ERTS_PSFLG_OFF_HEAP_MSGQ);
ASSERT(c_p->flags & F_OFF_HEAP_MSGQ_CHNG);
- for (mp = c_p->msg.first; mp; mp = mp->next) {
- Uint msg_sz, token_sz;
+ for (i = 0; i < sizeof(msgq)/sizeof(msgq[0]); i++) {
+ ErtsMessage *mp;
+ for (mp = msgq[i]; mp; mp = mp->next) {
+ Uint msg_sz, token_sz;
#ifdef USE_VM_PROBES
- Uint utag_sz;
+ Uint utag_sz;
#endif
- Eterm *hp;
- ErlHeapFragment *hfrag;
+ Eterm *hp;
+ ErlHeapFragment *hfrag;
+
+ if (!ERTS_SIG_IS_INTERNAL_MSG(mp))
+ continue;
- if (mp->data.attached)
- continue;
+ if (mp->data.attached)
+ continue;
- if (is_immed(ERL_MESSAGE_TERM(mp))
+ if (is_immed(ERL_MESSAGE_TERM(mp))
#ifdef USE_VM_PROBES
- && is_immed(ERL_MESSAGE_DT_UTAG(mp))
+ && is_immed(ERL_MESSAGE_DT_UTAG(mp))
#endif
- && is_not_immed(ERL_MESSAGE_TOKEN(mp)))
- continue;
+ && is_not_immed(ERL_MESSAGE_TOKEN(mp)))
+ continue;
- /*
- * The message refers into the heap. Copy the message
- * from the heap into a heap fragment and attach
- * it to the message...
- */
- msg_sz = size_object(ERL_MESSAGE_TERM(mp));
+ /*
+ * The message refers into the heap. Copy the message
+ * from the heap into a heap fragment and attach
+ * it to the message...
+ */
+ msg_sz = size_object(ERL_MESSAGE_TERM(mp));
#ifdef USE_VM_PROBES
- utag_sz = size_object(ERL_MESSAGE_DT_UTAG(mp));
+ utag_sz = size_object(ERL_MESSAGE_DT_UTAG(mp));
#endif
- token_sz = size_object(ERL_MESSAGE_TOKEN(mp));
+ token_sz = size_object(ERL_MESSAGE_TOKEN(mp));
- hfrag = new_message_buffer(msg_sz
+ hfrag = new_message_buffer(msg_sz
#ifdef USE_VM_PROBES
- + utag_sz
+ + utag_sz
#endif
- + token_sz);
- hp = hfrag->mem;
- if (is_not_immed(ERL_MESSAGE_TERM(mp)))
- ERL_MESSAGE_TERM(mp) = copy_struct(ERL_MESSAGE_TERM(mp),
- msg_sz, &hp,
- &hfrag->off_heap);
- if (is_not_immed(ERL_MESSAGE_TOKEN(mp)))
- ERL_MESSAGE_TOKEN(mp) = copy_struct(ERL_MESSAGE_TOKEN(mp),
- token_sz, &hp,
- &hfrag->off_heap);
+ + token_sz);
+ hp = hfrag->mem;
+ if (is_not_immed(ERL_MESSAGE_TERM(mp)))
+ ERL_MESSAGE_TERM(mp) = copy_struct(ERL_MESSAGE_TERM(mp),
+ msg_sz, &hp,
+ &hfrag->off_heap);
+ if (is_not_immed(ERL_MESSAGE_TOKEN(mp)))
+ ERL_MESSAGE_TOKEN(mp) = copy_struct(ERL_MESSAGE_TOKEN(mp),
+ token_sz, &hp,
+ &hfrag->off_heap);
#ifdef USE_VM_PROBES
- if (is_not_immed(ERL_MESSAGE_DT_UTAG(mp)))
- ERL_MESSAGE_DT_UTAG(mp) = copy_struct(ERL_MESSAGE_DT_UTAG(mp),
- utag_sz, &hp,
- &hfrag->off_heap);
+ if (is_not_immed(ERL_MESSAGE_DT_UTAG(mp)))
+ ERL_MESSAGE_DT_UTAG(mp) = copy_struct(ERL_MESSAGE_DT_UTAG(mp),
+ utag_sz, &hp,
+ &hfrag->off_heap);
#endif
- mp->data.heap_frag = hfrag;
- reds += 1;
+ mp->data.heap_frag = hfrag;
+ reds += 1;
+ }
}
return reds;
@@ -1015,7 +961,7 @@ erts_complete_off_heap_message_queue_change(Process *c_p)
else {
reds += 2;
erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ);
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
+ erts_proc_sig_fetch(c_p);
erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
reds += erts_move_messages_off_heap(c_p);
}
@@ -1225,139 +1171,6 @@ erts_decode_dist_message(Process *proc, ErtsProcLocks proc_locks,
return 1;
}
-/*
- * ERTS_INSPECT_MSGQ_KEEP_OH_MSGS == 0 will move off heap messages
- * into the heap of the inspected process if off_heap_message_queue
- * is false when process_info(_, messages) is called. That is, the
- * following GC will have more data in the rootset compared to the
- * scenario when process_info(_, messages) had not been called.
- *
- * ERTS_INSPECT_MSGQ_KEEP_OH_MSGS != 0 will keep off heap messages
- * off heap when process_info(_, messages) is called regardless of
- * the off_heap_message_queue setting of the process. That is, it
- * will change the following execution of the process as little as
- * possible.
- */
-#define ERTS_INSPECT_MSGQ_KEEP_OH_MSGS 1
-
-Uint
-erts_prep_msgq_for_inspection(Process *c_p, Process *rp,
- ErtsProcLocks rp_locks, ErtsMessageInfo *mip)
-{
- Uint tot_heap_size;
- ErtsMessage* mp;
- Sint i;
- int self_on_heap;
-
- /*
- * Prepare the message queue for inspection
- * by process_info().
- *
- *
- * - Decode all messages on external format
- * - Remove all corrupt dist messages from queue
- * - Save pointer to, and heap size need of each
- * message in the mip array.
- * - Return total heap size need for all messages
- * that needs to be copied.
- *
- * If ERTS_INSPECT_MSGQ_KEEP_OH_MSGS == 0:
- * - In case off heap messages is disabled and
- * we are inspecting our own queue, move all
- * off heap data into the heap.
- */
-
- self_on_heap = c_p == rp && !(c_p->flags & F_OFF_HEAP_MSGQ);
-
- tot_heap_size = 0;
- i = 0;
- mp = rp->msg.first;
- while (mp) {
- Eterm msg = ERL_MESSAGE_TERM(mp);
-
- mip[i].size = 0;
-
- if (is_non_value(msg)) {
- /* Dist message on external format; decode it... */
- if (mp->data.attached)
- erts_decode_dist_message(rp, rp_locks, mp,
- ERTS_INSPECT_MSGQ_KEEP_OH_MSGS);
-
- msg = ERL_MESSAGE_TERM(mp);
-
- if (is_non_value(msg)) {
- ErtsMessage **mpp;
- ErtsMessage *bad_mp = mp;
- /*
- * Bad distribution message; remove
- * it from the queue...
- */
- ASSERT(!mp->data.attached);
-
- mpp = i == 0 ? &rp->msg.first : &mip[i-1].msgp->next;
-
- ASSERT(*mpp == bad_mp);
-
- erts_msgq_update_internal_pointers(&rp->msg, mpp, &bad_mp->next);
-
- mp = mp->next;
- *mpp = mp;
- rp->msg.len--;
- bad_mp->next = NULL;
- erts_cleanup_messages(bad_mp);
- continue;
- }
- }
-
- ASSERT(is_value(msg));
-
-#if ERTS_INSPECT_MSGQ_KEEP_OH_MSGS
- if (is_not_immed(msg) && (!self_on_heap || mp->data.attached)) {
- Uint sz = size_object(msg);
- mip[i].size = sz;
- tot_heap_size += sz;
- }
-#else
- if (self_on_heap) {
- if (mp->data.attached) {
- ErtsMessage *tmp = NULL;
- if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
- erts_link_mbuf_to_proc(rp, mp->data.heap_frag);
- mp->data.attached = NULL;
- }
- else {
- /*
- * Need to replace the message reference since
- * we will get references to the message data
- * from the heap...
- */
- ErtsMessage **mpp;
- tmp = erts_alloc_message(0, NULL);
- sys_memcpy((void *) tmp->m, (void *) mp->m,
- sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ);
- mpp = i == 0 ? &rp->msg.first : &mip[i-1].msgp->next;
- erts_msgq_replace_msg_ref(&rp->msg, tmp, mpp);
- erts_save_message_in_proc(rp, mp);
- mp = tmp;
- }
- }
- }
- else if (is_not_immed(msg)) {
- Uint sz = size_object(msg);
- mip[i].size = sz;
- tot_heap_size += sz;
- }
-
-#endif
-
- mip[i].msgp = mp;
- i++;
- mp = mp->next;
- }
-
- return tot_heap_size;
-}
-
void erts_factory_proc_init(ErtsHeapFactory* factory,
Process* p)
{
diff --git a/erts/emulator/beam/erl_message.h b/erts/emulator/beam/erl_message.h
index a14f4f51d8..f56a252aef 100644
--- a/erts/emulator/beam/erl_message.h
+++ b/erts/emulator/beam/erl_message.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1997-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1997-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -21,6 +21,11 @@
#ifndef __ERL_MESSAGE_H__
#define __ERL_MESSAGE_H__
+#include "sys.h"
+#define ERTS_PROC_SIG_QUEUE_TYPE_ONLY
+#include "erl_proc_sig_queue.h"
+#undef ERTS_PROC_SIG_QUEUE_TYPE_ONLY
+
struct proc_bin;
struct external_thing_;
@@ -118,15 +123,16 @@ struct erl_heap_fragment {
};
/* m[0] = message, m[1] = seq trace token */
-#define ERL_MESSAGE_REF_ARRAY_SZ 2
+#define ERL_MESSAGE_REF_ARRAY_SZ 3
#define ERL_MESSAGE_TERM(mp) ((mp)->m[0])
#define ERL_MESSAGE_TOKEN(mp) ((mp)->m[1])
+#define ERL_MESSAGE_FROM(mp) ((mp)->m[2])
#ifdef USE_VM_PROBES
/* m[2] = dynamic trace user tag */
#undef ERL_MESSAGE_REF_ARRAY_SZ
-#define ERL_MESSAGE_REF_ARRAY_SZ 3
-#define ERL_MESSAGE_DT_UTAG(mp) ((mp)->m[2])
+#define ERL_MESSAGE_REF_ARRAY_SZ 4
+#define ERL_MESSAGE_DT_UTAG(mp) ((mp)->m[3])
#else
#endif
@@ -157,28 +163,79 @@ struct erl_mesg {
ErlHeapFragment hfrag;
};
+/*
+ * The ErtsMessage struct is only one special type
+ * of signal. All signal structs have a common
+ * begining and can be differentiated by looking
+ * at the ErtsSignal 'common.tag' field.
+ *
+ * - An ordinary message will have a value
+ * - A distribution message that has not been
+ * decoded yet will have the non-value.
+ * - Other signals will have an external pid
+ * header tag. In order to differentiate
+ * between those signals one needs to look
+ * at the arity part of the header (see
+ * erts_proc_sig_queue.h).
+ */
+
+#define ERTS_SIG_IS_NON_MSG_TAG(Tag) \
+ (is_external_pid_header((Tag)))
+
+#define ERTS_SIG_IS_NON_MSG(Sig) \
+ ERTS_SIG_IS_NON_MSG_TAG(((ErtsSignal *) (Sig))->common.tag)
+
+#define ERTS_SIG_IS_INTERNAL_MSG_TAG(Tag) \
+ (!is_header((Tag)))
+#define ERTS_SIG_IS_INTERNAL_MSG(Sig) \
+ ERTS_SIG_IS_INTERNAL_MSG_TAG(((ErtsSignal *) (Sig))->common.tag)
+
+#define ERTS_SIG_IS_EXTERNAL_MSG_TAG(Tag) \
+ ((Tag) == THE_NON_VALUE)
+#define ERTS_SIG_IS_EXTERNAL_MSG(Sig) \
+ ERTS_SIG_IS_EXTERNAL_MSG_TAG(((ErtsSignal *) (Sig))->common.tag)
+
+#define ERTS_SIG_IS_MSG_TAG(Tag) \
+ (!ERTS_SIG_IS_NON_MSG_TAG(Tag))
+#define ERTS_SIG_IS_MSG(Sig) \
+ ERTS_SIG_IS_MSG_TAG(((ErtsSignal *) (Sig))->common.tag)
+
+typedef union {
+ ErtsSignalCommon common;
+ ErtsMessageRef msg;
+} ErtsSignal;
+
+typedef struct {
+ /* pointers to next pointers pointing to... */
+ ErtsMessage **next; /* ... next (non-message) signal */
+ ErtsMessage **last; /* ... next (non-message) signal */
+} ErtsMsgQNMSigs;
+
/* Size of default message buffer (erl_message.c) */
#define ERL_MESSAGE_BUF_SZ 500
typedef struct {
- ErtsMessage* first;
- ErtsMessage** last; /* point to the last next pointer */
- ErtsMessage** save;
- Sint len; /* queue length */
+ /* inner queue */
+ ErtsMessage *first;
+ ErtsMessage **last; /* point to the last next pointer */
+ ErtsMessage **save;
- /*
- * The following field is used by the recv_mark/1 and
- * recv_set/1 instructions.
- */
- ErtsMessage** saved_last; /* saved last pointer */
-} ErlMessageQueue;
+ /* middle queue */
+ ErtsMessage *cont;
+ ErtsMessage **cont_last;
+ ErtsMsgQNMSigs nmsigs;
+ /* Common for inner and middle queue */
+ ErtsMessage **saved_last; /* saved last pointer */
+ Sint len; /* message queue length (inner+middle) */
+} ErtsSignalPrivQueues;
typedef struct {
ErtsMessage* first;
ErtsMessage** last; /* point to the last next pointer */
Sint len; /* queue length */
-} ErlMessageInQueue;
+ ErtsMsgQNMSigs nmsigs;
+} ErtsSignalInQueue;
typedef struct erl_trace_message_queue__ {
struct erl_trace_message_queue__ *next; /* point to the next receiver */
@@ -188,9 +245,46 @@ typedef struct erl_trace_message_queue__ {
Sint len; /* queue length */
} ErlTraceMessageQueue;
+#define ERTS_RECV_MARK_SAVE(P) \
+ do { \
+ erts_proc_lock((P), ERTS_PROC_LOCK_MSGQ); \
+ if ((P)->sig_inq.first) \
+ erts_proc_sig_fetch((P)); \
+ erts_proc_unlock((P), ERTS_PROC_LOCK_MSGQ); \
+ if ((P)->sig_qs.cont) { \
+ (P)->sig_qs.saved_last = (P)->sig_qs.cont_last; \
+ (P)->flags |= F_DEFERRED_SAVED_LAST; \
+ } \
+ else { \
+ (P)->sig_qs.saved_last = (P)->sig_qs.last; \
+ (P)->flags &= ~F_DEFERRED_SAVED_LAST; \
+ } \
+ } while (0)
+
+#define ERTS_RECV_MARK_SET(P) \
+ do { \
+ if ((P)->sig_qs.saved_last) { \
+ if ((P)->flags & F_DEFERRED_SAVED_LAST) { \
+ /* Points to middle queue; use end of inner */ \
+ (P)->sig_qs.save = (P)->sig_qs.last; \
+ ASSERT(!PEEK_MESSAGE((P))); \
+ } \
+ else { \
+ /* Points to inner queue; safe to use */ \
+ (P)->sig_qs.save = (P)->sig_qs.saved_last; \
+ } \
+ } \
+ } while (0)
+
+#define ERTS_RECV_MARK_CLEAR(P) \
+ do { \
+ (P)->sig_qs.saved_last = NULL; \
+ (P)->flags &= ~F_DEFERRED_SAVED_LAST; \
+ } while (0)
+
/* Get "current" message */
-#define PEEK_MESSAGE(p) (*(p)->msg.save)
+#define PEEK_MESSAGE(p) (*(p)->sig_qs.save)
#ifdef USE_VM_PROBES
#define LINK_MESSAGE_DTAG(mp, dt) ERL_MESSAGE_DT_UTAG(mp) = dt
@@ -198,58 +292,69 @@ typedef struct erl_trace_message_queue__ {
#define LINK_MESSAGE_DTAG(mp, dt)
#endif
-#define LINK_MESSAGE_IMPL(p, first_msg, last_msg, num_msgs, where) do { \
- *(p)->where.last = (first_msg); \
- (p)->where.last = (last_msg); \
- (p)->where.len += (num_msgs); \
- } while(0)
+#ifdef USE_VM_PROBES
+# define ERTS_MSG_RECV_TRACED(P) \
+ ((ERTS_TRACE_FLAGS((P)) & F_TRACE_RECEIVE) \
+ || DTRACE_ENABLED(message_queued))
+#else
+# define ERTS_MSG_RECV_TRACED(P) \
+ (ERTS_TRACE_FLAGS((P)) & F_TRACE_RECEIVE)
+
+#endif
/* Add message last in private message queue */
-#define LINK_MESSAGE_PRIVQ(p, first_msg, last_msg, len) \
+#define LINK_MESSAGE_PRIVQ(p, first_msg, last_msg, num_msgs) \
do { \
- LINK_MESSAGE_IMPL(p, first_msg, last_msg, len, msg); \
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__((p), "before"); \
+ if ((p)->sig_qs.cont || ERTS_MSG_RECV_TRACED((p))) { \
+ *(p)->sig_qs.cont_last = (first_msg); \
+ (p)->sig_qs.cont_last = (last_msg); \
+ } \
+ else { \
+ *(p)->sig_qs.last = (first_msg); \
+ (p)->sig_qs.last = (last_msg); \
+ } \
+ (p)->sig_qs.len += (num_msgs); \
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__((p), "after"); \
} while (0)
/* Add message last_msg in message queue */
-#define LINK_MESSAGE(p, first_msg, last_msg, len) \
- LINK_MESSAGE_IMPL(p, first_msg, last_msg, len, msg_inq)
-
-#define ERTS_MSGQ_MV_INQ2PRIVQ(p) \
- do { \
- if (p->msg_inq.first) { \
- *p->msg.last = p->msg_inq.first; \
- p->msg.last = p->msg_inq.last; \
- p->msg.len += p->msg_inq.len; \
- p->msg_inq.first = NULL; \
- p->msg_inq.last = &p->msg_inq.first; \
- p->msg_inq.len = 0; \
- } \
- } while (0)
-
+#define LINK_MESSAGE(p, first_msg, last_msg, num_msgs) \
+ do { \
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE__((p), "before"); \
+ *(p)->sig_inq.last = (first_msg); \
+ (p)->sig_inq.last = (last_msg); \
+ (p)->sig_inq.len += (num_msgs); \
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE__((p), "before"); \
+ } while(0)
/* Unlink current message */
-#define UNLINK_MESSAGE(p,msgp) do { \
- ErtsMessage* __mp = (msgp)->next; \
- *(p)->msg.save = __mp; \
- (p)->msg.len--; \
- if (__mp == NULL) \
- (p)->msg.last = (p)->msg.save; \
-} while(0)
+#define UNLINK_MESSAGE(p,msgp) \
+ do { \
+ ErtsMessage *mp__ = (msgp)->next; \
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__((p), "before"); \
+ *(p)->sig_qs.save = mp__; \
+ (p)->sig_qs.len--; \
+ if (mp__ == NULL) \
+ (p)->sig_qs.last = (p)->sig_qs.save; \
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__((p), "after"); \
+ } while(0)
/*
* Reset message save point (after receive match).
* Also invalidate the saved position since it may no
* longer be safe to use.
*/
-#define JOIN_MESSAGE(p) do { \
- (p)->msg.save = &(p)->msg.first; \
- (p)->msg.saved_last = 0; \
-} while(0)
+#define JOIN_MESSAGE(p) \
+ do { \
+ (p)->sig_qs.save = &(p)->sig_qs.first; \
+ ERTS_RECV_MARK_CLEAR((p)); \
+ } while(0)
/* Save current message */
#define SAVE_MESSAGE(p) \
- (p)->msg.save = &(*(p)->msg.save)->next
+ (p)->sig_qs.save = &(*(p)->sig_qs.save)->next
#define ERTS_SND_FLG_NO_SEQ_TRACE (((unsigned) 1) << 0)
@@ -276,6 +381,7 @@ typedef struct erl_trace_message_queue__ {
(MP)->next = NULL; \
ERL_MESSAGE_TERM(MP) = THE_NON_VALUE; \
ERL_MESSAGE_TOKEN(MP) = NIL; \
+ ERL_MESSAGE_FROM(MP) = NIL; \
ERL_MESSAGE_DT_UTAG_INIT(MP); \
MP->data.attached = NULL; \
} while (0)
@@ -288,7 +394,7 @@ void free_message_buffer(ErlHeapFragment *);
void erts_queue_dist_message(Process*, ErtsProcLocks, ErtsDistExternal *, Eterm, Eterm);
Sint erts_queue_message(Process*, ErtsProcLocks,ErtsMessage*, Eterm, Eterm);
Sint erts_queue_messages(Process*, ErtsProcLocks,
- ErtsMessage*, ErtsMessage**, Uint, Eterm);
+ ErtsMessage*, ErtsMessage**, Uint);
void erts_deliver_exit_message(Eterm, Process*, ErtsProcLocks *, Eterm, Eterm);
Sint erts_send_message(Process*, Process*, ErtsProcLocks*, Eterm, unsigned);
void erts_link_mbuf_to_proc(Process *proc, ErlHeapFragment *bp);
@@ -305,16 +411,6 @@ int erts_decode_dist_message(Process *, ErtsProcLocks, ErtsMessage *, int);
void erts_cleanup_messages(ErtsMessage *mp);
-typedef struct {
- Uint size;
- ErtsMessage *msgp;
-} ErtsMessageInfo;
-
-Uint erts_prep_msgq_for_inspection(Process *c_p,
- Process *rp,
- ErtsProcLocks rp_locks,
- ErtsMessageInfo *mip);
-
void *erts_alloc_message_ref(void);
void erts_free_message_ref(void *);
@@ -356,12 +452,6 @@ ERTS_GLB_FORCE_INLINE ErtsMessage *erts_shrink_message(ErtsMessage *mp, Uint sz,
ERTS_GLB_FORCE_INLINE void erts_free_message(ErtsMessage *mp);
ERTS_GLB_INLINE Uint erts_used_frag_sz(const ErlHeapFragment*);
ERTS_GLB_INLINE Uint erts_msg_attached_data_size(ErtsMessage *msg);
-ERTS_GLB_INLINE void erts_msgq_update_internal_pointers(ErlMessageQueue *msgq,
- ErtsMessage **newpp,
- ErtsMessage **oldpp);
-ERTS_GLB_INLINE void erts_msgq_replace_msg_ref(ErlMessageQueue *msgq,
- ErtsMessage *newp,
- ErtsMessage **oldpp);
#define ERTS_MSG_COMBINED_HFRAG ((void *) 0x1)
@@ -465,28 +555,6 @@ ERTS_GLB_INLINE Uint erts_msg_attached_data_size(ErtsMessage *msg)
}
}
-ERTS_GLB_INLINE void
-erts_msgq_update_internal_pointers(ErlMessageQueue *msgq,
- ErtsMessage **newpp,
- ErtsMessage **oldpp)
-{
- if (msgq->save == oldpp)
- msgq->save = newpp;
- if (msgq->last == oldpp)
- msgq->last = newpp;
- if (msgq->saved_last == oldpp)
- msgq->saved_last = newpp;
-}
-
-ERTS_GLB_INLINE void
-erts_msgq_replace_msg_ref(ErlMessageQueue *msgq, ErtsMessage *newp, ErtsMessage **oldpp)
-{
- ErtsMessage *oldp = *oldpp;
- newp->next = oldp->next;
- erts_msgq_update_internal_pointers(msgq, &newp->next, &oldp->next);
- *oldpp = newp;
-}
-
#endif
Uint erts_mbuf_size(Process *p);
@@ -500,4 +568,17 @@ Uint erts_mbuf_size(Process *p);
# define ERTS_CHK_MBUF_SZ(P) ((void) 1)
#endif
+#define ERTS_FOREACH_SIG_PRIVQS(PROC, MVAR, CODE) \
+ do { \
+ int i__; \
+ ErtsMessage *msgs__[] = {(PROC)->sig_qs.first, \
+ (PROC)->sig_qs.cont}; \
+ for (i__ = 0; i__ < sizeof(msgs__)/sizeof(msgs__[0]); i__++) { \
+ ErtsMessage *MVAR; \
+ for (MVAR = msgs__[i__]; MVAR; MVAR = MVAR->next) { \
+ CODE; \
+ } \
+ } \
+ } while (0)
+
#endif
diff --git a/erts/emulator/beam/erl_monitor_link.c b/erts/emulator/beam/erl_monitor_link.c
new file mode 100644
index 0000000000..70f36fb6b7
--- /dev/null
+++ b/erts/emulator/beam/erl_monitor_link.c
@@ -0,0 +1,1341 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * Description: Monitor and link implementation.
+ *
+ * Author: Rickard Green
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "sys.h"
+#include <stddef.h>
+#include "global.h"
+#include "erl_node_tables.h"
+#include "erl_monitor_link.h"
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Red-black tree implementation used for monitors and links. *
+\* */
+
+static ERTS_INLINE Eterm
+ml_get_key(ErtsMonLnkNode *mln)
+{
+ char *ptr = (char *) mln;
+ ptr += mln->key_offset;
+
+#ifdef ERTS_ML_DEBUG
+ switch (mln->type) {
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ case ERTS_MON_TYPE_RESOURCE: {
+ ErtsMonitorData *mdp = erts_monitor_to_data(mln);
+ ERTS_ML_ASSERT(&mdp->ref == (Eterm *) ptr);
+ break;
+ }
+ case ERTS_LNK_TYPE_PROC:
+ case ERTS_LNK_TYPE_DIST_PROC:
+ case ERTS_LNK_TYPE_PORT:
+ case ERTS_MON_TYPE_NODE:
+ case ERTS_MON_TYPE_NODES:
+ case ERTS_MON_TYPE_SUSPEND:
+ ERTS_ML_ASSERT(&mln->other.item == (Eterm *) ptr);
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Invalid type");
+ break;
+ }
+#endif
+
+ return *((Eterm *) ptr);
+}
+
+/*
+ * Comparison functions for valid *and only valid* keys. That
+ * is, if the set of valid keys is changed, this function needs
+ * to be updated...
+ *
+ * Note that this function does *not* order terms according to
+ * term order, and that the order may vary between emulator
+ * restarts...
+ */
+static int
+ml_cmp_keys(Eterm key1, Eterm key2)
+{
+ /*
+ * A monitor key is either an internal pid, a (nodename) atom,
+ * a small (monitor nodes bitmask), an ordinary internal ref,
+ * or an external ref.
+ *
+ * Order between monitors with keys of different types:
+ * internal pid < atom < small < internal ref < external ref
+ *
+ * A link key is either a pid, an internal port
+ *
+ * Order between links with keys of different types:
+ * internal pid < internal port < external pid
+ *
+ */
+ ERTS_ML_ASSERT(is_internal_pid(key1)
+ || is_internal_port(key1)
+ || is_atom(key1)
+ || is_small(key1)
+ || is_external_pid(key1)
+ || is_internal_ordinary_ref(key1)
+ || is_external_ref(key1));
+
+ ERTS_ML_ASSERT(is_internal_pid(key2)
+ || is_internal_port(key2)
+ || is_atom(key2)
+ || is_small(key2)
+ || is_external_pid(key2)
+ || is_internal_ordinary_ref(key2)
+ || is_external_ref(key2));
+
+ if (is_immed(key1)) {
+ int key1_tag, key2_tag;
+
+ ERTS_ML_ASSERT(is_internal_pid(key1)
+ || is_internal_port(key1)
+ || is_atom(key1)
+ || is_small(key1));
+
+ if (key1 == key2)
+ return 0;
+
+ if (is_boxed(key2))
+ return -1;
+
+ ERTS_ML_ASSERT(is_internal_pid(key2)
+ || is_internal_port(key2)
+ || is_atom(key2)
+ || is_small(key2));
+
+ key1_tag = (int) (key1 & _TAG_IMMED1_MASK);
+ key2_tag = (int) (key2 & _TAG_IMMED1_MASK);
+
+ if (key1_tag != key2_tag)
+ return key1_tag - key2_tag;
+
+ ASSERT((is_atom(key1) && is_atom(key2))
+ || (is_small(key1) && is_small(key2))
+ || (is_internal_pid(key1) && is_internal_pid(key2))
+ || (is_internal_port(key1) && is_internal_port(key2)));
+
+ return key1 < key2 ? -1 : 1;
+ }
+ else {
+ Eterm *w1, hdr1;
+
+ ERTS_ML_ASSERT(is_boxed(key1));
+
+ w1 = boxed_val(key1);
+ hdr1 = *w1;
+
+ if ((hdr1 & _TAG_HEADER_MASK) == _TAG_HEADER_REF) {
+ Eterm *w2;
+
+ if (!is_internal_ref(key2))
+ return is_immed(key2) ? 1 : -1;
+
+ w2 = internal_ref_val(key2);
+
+ ERTS_ML_ASSERT(w1[0] == ERTS_REF_THING_HEADER);
+ ERTS_ML_ASSERT(w2[0] == ERTS_REF_THING_HEADER);
+
+ return sys_memcmp((void *) &w1[1], (void *) &w2[1],
+ (ERTS_REF_THING_SIZE - 1)*sizeof(Eterm));
+ }
+
+ ERTS_ML_ASSERT(is_external(key1));
+
+ if (is_not_external(key2))
+ return 1;
+ else {
+ Uint ndw1, ndw2;
+ ExternalThing *et1, *et2;
+ ErlNode *n1, *n2;
+
+ ERTS_ML_ASSERT((is_external_ref(key1) && is_external_ref(key2))
+ || (is_external_pid(key1) && is_external_pid(key2)));
+
+ et1 = (ExternalThing *) w1;
+ et2 = (ExternalThing *) external_val(key2);
+
+ n1 = et1->node;
+ n2 = et2->node;
+
+ if (n1 != n2) {
+ if (n1->sysname != n2->sysname)
+ return n1->sysname < n2->sysname ? -1 : 1;
+ ASSERT(n1->creation != n2->creation);
+ return n1->creation < n2->creation ? -1 : 1;
+ }
+
+ ndw1 = external_thing_data_words(et1);
+ ndw2 = external_thing_data_words(et1);
+ if (ndw1 != ndw2)
+ return ndw1 < ndw2 ? -1 : 1;
+
+ return sys_memcmp((void *) &et1->data.ui[0],
+ (void *) &et2->data.ui[0],
+ ndw1*sizeof(Eterm));
+ }
+ }
+}
+
+#define ERTS_ML_TPFLG_RED (((UWord) 1) << 0)
+
+#define ERTS_ML_TPFLGS_MASK (ERTS_ML_TPFLG_RED)
+
+#define ERTS_RBT_PREFIX mon_lnk
+#define ERTS_RBT_T ErtsMonLnkNode
+#define ERTS_RBT_KEY_T Eterm
+#define ERTS_RBT_FLAGS_T UWord
+#define ERTS_RBT_INIT_EMPTY_TNODE(T) \
+ do { \
+ (T)->node.tree.parent = (UWord) NULL; \
+ (T)->node.tree.right = NULL; \
+ (T)->node.tree.left = NULL; \
+ } while (0)
+#define ERTS_RBT_IS_RED(T) \
+ (!!((T)->node.tree.parent & ERTS_ML_TPFLG_RED))
+#define ERTS_RBT_SET_RED(T) \
+ ((T)->node.tree.parent |= ERTS_ML_TPFLG_RED)
+#define ERTS_RBT_IS_BLACK(T) \
+ (!ERTS_RBT_IS_RED((T)))
+#define ERTS_RBT_SET_BLACK(T) \
+ ((T)->node.tree.parent &= ~ERTS_ML_TPFLG_RED)
+#define ERTS_RBT_GET_FLAGS(T) \
+ ((T)->node.tree.parent & ERTS_ML_TPFLGS_MASK)
+#define ERTS_RBT_SET_FLAGS(T, F) \
+ do { \
+ ERTS_ML_ASSERT((((UWord) (F)) & ~ERTS_ML_TPFLGS_MASK) == 0); \
+ (T)->node.tree.parent &= ~ERTS_ML_TPFLGS_MASK; \
+ (T)->node.tree.parent |= (F); \
+ } while (0)
+#define ERTS_RBT_GET_PARENT(T) \
+ ((ERTS_RBT_T *) ((T)->node.tree.parent & ~ERTS_ML_TPFLGS_MASK))
+#define ERTS_RBT_SET_PARENT(T, P) \
+ do { \
+ ERTS_ML_ASSERT((((UWord) (P)) & ERTS_ML_TPFLGS_MASK) == 0); \
+ (T)->node.tree.parent &= ERTS_ML_TPFLGS_MASK; \
+ (T)->node.tree.parent |= (UWord) (P); \
+ } while (0)
+#define ERTS_RBT_GET_RIGHT(T) ((T)->node.tree.right)
+#define ERTS_RBT_SET_RIGHT(T, R) ((T)->node.tree.right = (R))
+#define ERTS_RBT_GET_LEFT(T) ((T)->node.tree.left)
+#define ERTS_RBT_SET_LEFT(T, L) ((T)->node.tree.left = (L))
+#define ERTS_RBT_GET_KEY(T) (ml_get_key((T)))
+#define ERTS_RBT_CMP_KEYS(KX, KY) (ml_cmp_keys((KX), (KY)))
+#define ERTS_RBT_WANT_DELETE
+#define ERTS_RBT_WANT_LOOKUP
+#define ERTS_RBT_WANT_LOOKUP_INSERT
+#define ERTS_RBT_WANT_LOOKUP_CREATE
+#define ERTS_RBT_WANT_INSERT
+#define ERTS_RBT_WANT_REPLACE
+#define ERTS_RBT_WANT_FOREACH
+#define ERTS_RBT_WANT_FOREACH_YIELDING
+#define ERTS_RBT_WANT_FOREACH_DESTROY
+#define ERTS_RBT_WANT_FOREACH_DESTROY_YIELDING
+#define ERTS_RBT_UNDEF
+
+#include "erl_rbtree.h"
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Tree Operations *
+\* */
+
+static ErtsMonLnkNode *
+ml_rbt_lookup(ErtsMonLnkNode *root, Eterm ref)
+{
+ ErtsMonLnkNode *ml = mon_lnk_rbt_lookup(root, ref);
+ ASSERT(!ml || (ml->flags & ERTS_ML_FLG_IN_TABLE));
+ return ml;
+}
+
+static ErtsMonLnkNode *
+ml_rbt_lookup_insert(ErtsMonLnkNode **root, ErtsMonLnkNode *ml)
+{
+ ErtsMonLnkNode *res;
+ ERTS_ML_ASSERT(!(ml->flags & ERTS_ML_FLG_IN_TABLE));
+ res = mon_lnk_rbt_lookup_insert(root, ml);
+ if (!res)
+ ml->flags |= ERTS_ML_FLG_IN_TABLE;
+ return res;
+}
+
+static ErtsMonLnkNode *
+ml_rbt_lookup_create(ErtsMonLnkNode ** root, Eterm key,
+ ErtsMonLnkNode *(*create)(Eterm, void *),
+ void *carg, int *created)
+{
+ ErtsMonLnkNode *ml;
+ ml = mon_lnk_rbt_lookup_create(root, key, create, carg, created);
+ if (*created)
+ ml->flags |= ERTS_ML_FLG_IN_TABLE;
+ return ml;
+}
+
+static void
+ml_rbt_insert(ErtsMonLnkNode **root, ErtsMonLnkNode *ml)
+{
+#ifdef ERTS_ML_DEBUG
+ ErtsMonLnkNode *res;
+ ERTS_ML_ASSERT(!(ml->flags & ERTS_ML_FLG_IN_TABLE));
+ res = ml_rbt_lookup(*root, ml_get_key(ml));
+ ERTS_ML_ASSERT(res == NULL);
+#endif
+
+ mon_lnk_rbt_insert(root, ml);
+ ml->flags |= ERTS_ML_FLG_IN_TABLE;
+}
+
+static void
+ml_rbt_replace(ErtsMonLnkNode **root, ErtsMonLnkNode *old, ErtsMonLnkNode *new)
+{
+ ERTS_ML_ASSERT(old->flags & ERTS_ML_FLG_IN_TABLE);
+ ERTS_ML_ASSERT(!(new->flags & ERTS_ML_FLG_IN_TABLE));
+
+ mon_lnk_rbt_replace(root, old, new);
+ old->flags &= ~ERTS_ML_FLG_IN_TABLE;
+ new->flags |= ERTS_ML_FLG_IN_TABLE;
+}
+
+static void
+ml_rbt_delete(ErtsMonLnkNode **root, ErtsMonLnkNode *ml)
+{
+ ERTS_ML_ASSERT(ml->flags & ERTS_ML_FLG_IN_TABLE);
+ mon_lnk_rbt_delete(root, ml);
+ ml->flags &= ~ERTS_ML_FLG_IN_TABLE;
+}
+
+
+static void
+ml_rbt_foreach(ErtsMonLnkNode *root,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg)
+{
+ mon_lnk_rbt_foreach(root, func, arg);
+}
+
+typedef struct {
+ ErtsMonLnkNode *root;
+ mon_lnk_rbt_yield_state_t rbt_ystate;
+} ErtsMonLnkYieldState;
+
+static int
+ml_rbt_foreach_yielding(ErtsMonLnkNode *root,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ int res;
+ ErtsMonLnkYieldState ys = {root, ERTS_RBT_YIELD_STAT_INITER};
+ ErtsMonLnkYieldState *ysp;
+
+ ysp = (ErtsMonLnkYieldState *) *vyspp;
+ if (!ysp)
+ ysp = &ys;
+ res = mon_lnk_rbt_foreach_yielding(ysp->root, func, arg,
+ &ysp->rbt_ystate, limit);
+ if (res == 0) {
+ if (ysp != &ys)
+ erts_free(ERTS_ALC_T_ML_YIELD_STATE, ysp);
+ *vyspp = NULL;
+ }
+ else {
+
+ if (ysp == &ys) {
+ ysp = erts_alloc(ERTS_ALC_T_ML_YIELD_STATE,
+ sizeof(ErtsMonLnkYieldState));
+ sys_memcpy((void *) ysp, (void *) &ys,
+ sizeof(ErtsMonLnkYieldState));
+ }
+
+ *vyspp = (void *) ysp;
+ }
+
+ return res;
+}
+
+typedef struct {
+ void (*func)(ErtsMonLnkNode *, void *);
+ void *arg;
+} ErtsMonLnkForeachDeleteContext;
+
+static void
+rbt_wrap_foreach_delete(ErtsMonLnkNode *ml, void *vctxt)
+{
+ ErtsMonLnkForeachDeleteContext *ctxt = vctxt;
+ ERTS_ML_ASSERT(ml->flags & ERTS_ML_FLG_IN_TABLE);
+ ml->flags &= ~ERTS_ML_FLG_IN_TABLE;
+ ctxt->func(ml, ctxt->arg);
+}
+
+static void
+ml_rbt_foreach_delete(ErtsMonLnkNode **root,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg)
+{
+ ErtsMonLnkForeachDeleteContext ctxt;
+ ctxt.func = func;
+ ctxt.arg = arg;
+ mon_lnk_rbt_foreach_destroy(root,
+ rbt_wrap_foreach_delete,
+ (void *) &ctxt);
+}
+
+static int
+ml_rbt_foreach_delete_yielding(ErtsMonLnkNode **root,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ int res;
+ ErtsMonLnkYieldState ys = {*root, ERTS_RBT_YIELD_STAT_INITER};
+ ErtsMonLnkYieldState *ysp;
+ ErtsMonLnkForeachDeleteContext ctxt;
+ ctxt.func = func;
+ ctxt.arg = arg;
+
+ ysp = (ErtsMonLnkYieldState *) *vyspp;
+ if (!ysp) {
+ *root = NULL;
+ ysp = &ys;
+ }
+ res = mon_lnk_rbt_foreach_destroy_yielding(&ysp->root,
+ rbt_wrap_foreach_delete,
+ (void *) &ctxt,
+ &ysp->rbt_ystate,
+ limit);
+ if (res == 0) {
+ if (ysp != &ys)
+ erts_free(ERTS_ALC_T_ML_YIELD_STATE, ysp);
+ *vyspp = NULL;
+ }
+ else {
+
+ if (ysp == &ys) {
+ ysp = erts_alloc(ERTS_ALC_T_ML_YIELD_STATE,
+ sizeof(ErtsMonLnkYieldState));
+ sys_memcpy((void *) ysp, (void *) &ys,
+ sizeof(ErtsMonLnkYieldState));
+ }
+
+ *vyspp = (void *) ysp;
+ }
+
+ return res;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * List Operations *
+\* */
+
+static int
+ml_dl_list_foreach_yielding(ErtsMonLnkNode *list,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ Sint cnt = 0;
+ ErtsMonLnkNode *ml = (ErtsMonLnkNode *) *vyspp;
+
+ ERTS_ML_ASSERT(!ml || list);
+
+ if (!ml)
+ ml = list;
+
+ if (ml) {
+ do {
+ ERTS_ML_ASSERT(ml->flags & ERTS_ML_FLG_IN_TABLE);
+ func(ml, arg);
+ ml = ml->node.list.next;
+ cnt++;
+ } while (ml != list && cnt < limit);
+ if (ml != list) {
+ *vyspp = (void *) ml;
+ return 1; /* yield */
+ }
+ }
+
+ *vyspp = NULL;
+ return 0; /* done */
+}
+
+static int
+ml_dl_list_foreach_delete_yielding(ErtsMonLnkNode **list,
+ void (*func)(ErtsMonLnkNode *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ Sint cnt = 0;
+ ErtsMonLnkNode *first = *list;
+ ErtsMonLnkNode *ml = (ErtsMonLnkNode *) *vyspp;
+
+ ERTS_ML_ASSERT(!ml || first);
+
+ if (!ml)
+ ml = first;
+
+ if (ml) {
+ do {
+ ErtsMonLnkNode *next = ml->node.list.next;
+ ERTS_ML_ASSERT(ml->flags & ERTS_ML_FLG_IN_TABLE);
+ ml->flags &= ~ERTS_ML_FLG_IN_TABLE;
+ func(ml, arg);
+ ml = next;
+ cnt++;
+ } while (ml != first && cnt < limit);
+ if (ml != first) {
+ *vyspp = (void *) ml;
+ return 1; /* yield */
+ }
+ }
+
+ *vyspp = NULL;
+ *list = NULL;
+ return 0; /* done */
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Misc *
+\* */
+
+ErtsMonLnkDist *
+erts_mon_link_dist_create(Eterm nodename)
+{
+ ErtsMonLnkDist *mld = erts_alloc(ERTS_ALC_T_ML_DIST,
+ sizeof(ErtsMonLnkDist));
+ mld->nodename = nodename;
+ mld->connection_id = ~((Uint32) 0);
+ erts_atomic_init_nob(&mld->refc, 1);
+ erts_mtx_init(&mld->mtx, "dist_entry_links", nodename,
+ ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
+ mld->alive = !0;
+ mld->links = NULL;
+ mld->monitors = NULL;
+ mld->orig_name_monitors = NULL;
+ return mld;
+}
+
+void
+erts_mon_link_dist_destroy__(ErtsMonLnkDist *mld)
+{
+ ERTS_ML_ASSERT(erts_atomic_read_nob(&mld->refc) == 0);
+ ERTS_ML_ASSERT(!mld->alive);
+ ERTS_ML_ASSERT(!mld->links);
+ ERTS_ML_ASSERT(!mld->monitors);
+ ERTS_ML_ASSERT(!mld->orig_name_monitors);
+
+ erts_mtx_destroy(&mld->mtx);
+ erts_free(ERTS_ALC_T_ML_DIST, mld);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Monitor Operations *
+\* */
+
+#ifdef ERTS_ML_DEBUG
+size_t erts_monitor_origin_offset;
+size_t erts_monitor_origin_key_offset;
+size_t erts_monitor_target_offset;
+size_t erts_monitor_target_key_offset;
+size_t erts_monitor_node_key_offset;
+#endif
+
+static ERTS_INLINE void
+monitor_init(void)
+{
+#ifdef ERTS_ML_DEBUG
+ erts_monitor_origin_offset = offsetof(ErtsMonitorData, origin);
+ erts_monitor_origin_key_offset = offsetof(ErtsMonitorData, ref);
+ ASSERT(erts_monitor_origin_key_offset >= erts_monitor_origin_offset);
+ erts_monitor_origin_key_offset -= erts_monitor_origin_offset;
+ erts_monitor_target_offset = offsetof(ErtsMonitorData, target);
+ erts_monitor_target_key_offset = offsetof(ErtsMonitorData, ref);
+ ASSERT(erts_monitor_target_key_offset >= erts_monitor_target_offset);
+ erts_monitor_target_key_offset -= erts_monitor_target_offset;
+ erts_monitor_node_key_offset = offsetof(ErtsMonitor, other.item);
+#endif
+}
+
+ErtsMonitor *
+erts_monitor_tree_lookup(ErtsMonitor *root, Eterm key)
+{
+ ERTS_ML_ASSERT(is_internal_ordinary_ref(key)
+ || is_external_ref(key)
+ || is_atom(key)
+ || is_small(key)
+ || is_internal_pid(key));
+ return (ErtsMonitor *) ml_rbt_lookup((ErtsMonLnkNode *) root, key);
+}
+
+ErtsMonitor *
+erts_monotor_tree_lookup_insert(ErtsMonitor **root, ErtsMonitor *mon)
+{
+ return (ErtsMonitor *) ml_rbt_lookup_insert((ErtsMonLnkNode **) root,
+ (ErtsMonLnkNode *) mon);
+}
+
+typedef struct {
+ Uint16 type;
+ Eterm origin;
+} ErtsMonitorCreateCtxt;
+
+static ErtsMonLnkNode *
+create_monitor(Eterm target, void *vcctxt)
+{
+ ErtsMonitorCreateCtxt *cctxt = vcctxt;
+ ErtsMonitorData *mdp = erts_monitor_create(cctxt->type,
+ NIL,
+ cctxt->origin,
+ target,
+ NIL);
+ ERTS_ML_ASSERT(ml_cmp_keys(ml_get_key(&mdp->origin), target) == 0);
+ return (ErtsMonLnkNode *) &mdp->origin;
+}
+
+ErtsMonitor *
+erts_monitor_tree_lookup_create(ErtsMonitor **root, int *created, Uint16 type,
+ Eterm origin, Eterm target)
+{
+ ErtsMonitor *res;
+ ErtsMonitorCreateCtxt cctxt = {type, origin};
+
+ ERTS_ML_ASSERT(type == ERTS_MON_TYPE_NODE || type == ERTS_MON_TYPE_NODES);
+
+ res = (ErtsMonitor *) ml_rbt_lookup_create((ErtsMonLnkNode **) root,
+ target, create_monitor,
+ (void *) &cctxt,
+ created);
+
+ ERTS_ML_ASSERT(res && erts_monitor_is_origin(res));
+
+ return res;
+}
+
+void
+erts_monitor_tree_insert(ErtsMonitor **root, ErtsMonitor *mon)
+{
+ ml_rbt_insert((ErtsMonLnkNode **) root, (ErtsMonLnkNode *) mon);
+}
+
+void
+erts_monitor_tree_replace(ErtsMonitor **root, ErtsMonitor *old, ErtsMonitor *new)
+{
+ ml_rbt_replace((ErtsMonLnkNode **) root,
+ (ErtsMonLnkNode *) old,
+ (ErtsMonLnkNode *) new);
+}
+
+void
+erts_monitor_tree_delete(ErtsMonitor **root, ErtsMonitor *mon)
+{
+ ml_rbt_delete((ErtsMonLnkNode **) root, (ErtsMonLnkNode *) mon);
+}
+
+void
+erts_monitor_tree_foreach(ErtsMonitor *root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg)
+{
+ ml_rbt_foreach((ErtsMonLnkNode *) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg);
+}
+
+int
+erts_monitor_tree_foreach_yielding(ErtsMonitor *root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_rbt_foreach_yielding((ErtsMonLnkNode *) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_monitor_tree_foreach_delete(ErtsMonitor **root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg)
+{
+ ml_rbt_foreach_delete((ErtsMonLnkNode **) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg);
+}
+
+int
+erts_monitor_tree_foreach_delete_yielding(ErtsMonitor **root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_rbt_foreach_delete_yielding((ErtsMonLnkNode **) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_monitor_list_foreach(ErtsMonitor *list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg)
+{
+ void *ystate = NULL;
+ while (ml_dl_list_foreach_yielding((ErtsMonLnkNode *) list,
+ (void (*)(ErtsMonLnkNode *, void *)) func,
+ arg, &ystate, (Sint) INT_MAX));
+}
+
+int
+erts_monitor_list_foreach_yielding(ErtsMonitor *list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_dl_list_foreach_yielding((ErtsMonLnkNode *) list,
+ (void (*)(ErtsMonLnkNode *, void *)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_monitor_list_foreach_delete(ErtsMonitor **list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg)
+{
+ void *ystate = NULL;
+ while (ml_dl_list_foreach_delete_yielding((ErtsMonLnkNode **) list,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, &ystate, (Sint) INT_MAX));
+}
+
+int
+erts_monitor_list_foreach_delete_yielding(ErtsMonitor **list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_dl_list_foreach_delete_yielding((ErtsMonLnkNode **) list,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+ErtsMonitorData *
+erts_monitor_create(Uint16 type, Eterm ref, Eterm orgn, Eterm trgt, Eterm name)
+{
+ ErtsMonitorData *mdp;
+
+ switch (type) {
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ if (is_nil(name)) {
+ ErtsMonitorDataHeap *mdhp;
+ ErtsORefThing *ortp;
+
+ ERTS_ML_ASSERT(is_immed(orgn) && is_immed(trgt));
+ ERTS_ML_ASSERT(is_internal_ordinary_ref(ref));
+
+ mdhp = erts_alloc(ERTS_ALC_T_MONITOR, sizeof(ErtsMonitorDataHeap));
+ mdp = &mdhp->md;
+ ERTS_ML_ASSERT(((void *) mdp) == ((void *) mdhp));
+
+ ortp = (ErtsORefThing *) (char *) internal_ref_val(ref);
+ mdhp->oref_thing = *ortp;
+ mdp->ref = make_internal_ref(&mdhp->oref_thing.header);
+
+ mdp->origin.other.item = trgt;
+ mdp->origin.offset = (Uint16) offsetof(ErtsMonitorData, origin);
+ mdp->origin.key_offset = (Uint16) offsetof(ErtsMonitorData, ref);
+ ERTS_ML_ASSERT(mdp->origin.key_offset >= mdp->origin.offset);
+ mdp->origin.key_offset -= mdp->origin.offset;
+ mdp->origin.flags = (Uint16) 0;
+ mdp->origin.type = type;
+
+ mdp->target.other.item = orgn;
+ mdp->target.offset = (Uint16) offsetof(ErtsMonitorData, target);
+ mdp->target.key_offset = (Uint16) offsetof(ErtsMonitorData, ref);
+ ERTS_ML_ASSERT(mdp->target.key_offset >= mdp->target.offset);
+ mdp->target.key_offset -= mdp->target.offset;
+ mdp->target.flags = ERTS_ML_FLG_TARGET;
+ mdp->target.type = type;
+ break;
+ }
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_RESOURCE:
+ case ERTS_MON_TYPE_NODE:
+ case ERTS_MON_TYPE_NODES: {
+ ErtsMonitorDataExtended *mdep;
+ Uint size = sizeof(ErtsMonitorDataExtended) - sizeof(Eterm);
+ Uint rsz, osz, tsz;
+ Eterm *hp;
+ ErlOffHeap oh;
+ Uint16 name_flag = is_nil(name) ? ((Uint16) 0) : ERTS_ML_FLG_NAME;
+
+ rsz = is_immed(ref) ? 0 : size_object(ref);
+ tsz = is_immed(trgt) ? 0 : size_object(trgt);
+ if (type == ERTS_MON_TYPE_RESOURCE)
+ osz = 0;
+ else
+ osz = is_immed(orgn) ? 0 : size_object(orgn);
+
+ size += (rsz + osz + tsz) * sizeof(Eterm);
+
+ mdep = erts_alloc(ERTS_ALC_T_MONITOR_EXT, size);
+
+ ERTS_INIT_OFF_HEAP(&oh);
+
+ hp = &mdep->heap[0];
+
+ mdp = &mdep->md;
+ ERTS_ML_ASSERT(((void *) mdp) == ((void *) mdep));
+
+ mdp->ref = rsz ? copy_struct(ref, rsz, &hp, &oh) : ref;
+
+ mdp->origin.other.item = tsz ? copy_struct(trgt, tsz, &hp, &oh) : trgt;
+ mdp->origin.offset = (Uint16) offsetof(ErtsMonitorData, origin);
+ mdp->origin.flags = ERTS_ML_FLG_EXTENDED|name_flag;
+ mdp->origin.type = type;
+
+ if (type == ERTS_MON_TYPE_RESOURCE)
+ mdp->target.other.ptr = (void *) orgn;
+ else
+ mdp->target.other.item = osz ? copy_struct(orgn, osz, &hp, &oh) : orgn;
+ mdp->target.offset = (Uint16) offsetof(ErtsMonitorData, target);
+ mdp->target.flags = ERTS_ML_FLG_TARGET|ERTS_ML_FLG_EXTENDED|name_flag;
+ mdp->target.type = type;
+
+ if (type == ERTS_MON_TYPE_NODE || type == ERTS_MON_TYPE_NODES) {
+ mdep->u.refc = 0;
+ mdp->origin.key_offset = (Uint16) offsetof(ErtsMonitor, other.item);
+ mdp->target.key_offset = (Uint16) offsetof(ErtsMonitor, other.item);
+ ERTS_ML_ASSERT(!oh.first);
+ mdep->uptr.node_monitors = NULL;
+ }
+ else {
+ mdep->u.name = name;
+
+ mdp->origin.key_offset = (Uint16) offsetof(ErtsMonitorData, ref);
+ ERTS_ML_ASSERT(mdp->origin.key_offset >= mdp->origin.offset);
+ mdp->origin.key_offset -= mdp->origin.offset;
+
+ mdp->target.key_offset = (Uint16) offsetof(ErtsMonitorData, ref);
+ ERTS_ML_ASSERT(mdp->target.key_offset >= mdp->target.offset);
+ mdp->target.key_offset -= mdp->target.offset;
+
+ mdep->uptr.ohhp = oh.first;
+ }
+ mdep->dist = NULL;
+ break;
+ }
+ case ERTS_MON_TYPE_SUSPEND:
+ ERTS_INTERNAL_ERROR("Use erts_monitor_suspend_create() instead...");
+ mdp = NULL;
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Invalid monitor type");
+ mdp = NULL;
+ break;
+ }
+
+ erts_atomic32_init_nob(&mdp->refc, 2);
+
+ return mdp;
+}
+
+/*
+ * erts_monitor_destroy__() should only be called from
+ * erts_monitor_release() or erts_monitor_release_both().
+ */
+void
+erts_monitor_destroy__(ErtsMonitorData *mdp)
+{
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&mdp->refc) == 0);
+ ERTS_ML_ASSERT(!(mdp->origin.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(!(mdp->target.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT((mdp->origin.flags & ERTS_ML_FLGS_SAME)
+ == (mdp->target.flags & ERTS_ML_FLGS_SAME));
+ ERTS_ML_ASSERT(mdp->origin.type != ERTS_MON_TYPE_SUSPEND);
+
+ if (!(mdp->origin.flags & ERTS_ML_FLG_EXTENDED))
+ erts_free(ERTS_ALC_T_MONITOR, mdp);
+ else {
+ ErtsMonitorDataExtended *mdep = (ErtsMonitorDataExtended *) mdp;
+ ErlOffHeap oh;
+ if (mdp->origin.type == ERTS_MON_TYPE_NODE)
+ ERTS_ML_ASSERT(!mdep->uptr.node_monitors);
+ else if (mdep->uptr.ohhp) {
+ ERTS_INIT_OFF_HEAP(&oh);
+ oh.first = mdep->uptr.ohhp;
+ erts_cleanup_offheap(&oh);
+ }
+ if (mdep->dist)
+ erts_mon_link_dist_dec_refc(mdep->dist);
+ erts_free(ERTS_ALC_T_MONITOR_EXT, mdp);
+ }
+}
+
+void
+erts_monitor_set_dead_dist(ErtsMonitor *mon, Eterm nodename)
+{
+ ErtsMonitorDataExtended *mdep;
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+
+ ERTS_ML_ASSERT(mon->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(mon->type == ERTS_MON_TYPE_DIST_PROC);
+ ERTS_ML_ASSERT(!mdep->dist);
+
+ mdep->dist = erts_mon_link_dist_create(nodename);
+ mdep->dist->alive = 0;
+}
+
+Uint
+erts_monitor_size(ErtsMonitor *mon)
+{
+ Uint size, refc;
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+
+ ERTS_ML_ASSERT(mon->type != ERTS_MON_TYPE_SUSPEND);
+
+ if (!(mon->flags & ERTS_ML_FLG_EXTENDED))
+ size = sizeof(ErtsMonitorDataHeap);
+ else {
+ ErtsMonitorDataExtended *mdep;
+ Uint hsz = 0;
+
+ mdep = (ErtsMonitorDataExtended *) mdp;
+
+ if (mon->type != ERTS_MON_TYPE_NODE
+ && mon->type != ERTS_MON_TYPE_NODES) {
+ if (!is_immed(mdep->md.ref))
+ hsz += NC_HEAP_SIZE(mdep->md.ref);
+ if (mon->type == ERTS_MON_TYPE_DIST_PROC) {
+ if (!is_immed(mdep->md.origin.other.item))
+ hsz += NC_HEAP_SIZE(mdep->md.origin.other.item);
+ if (!is_immed(mdep->md.target.other.item))
+ hsz += NC_HEAP_SIZE(mdep->md.target.other.item);
+ }
+ }
+ size = sizeof(ErtsMonitorDataExtended) + (hsz - 1)*sizeof(Eterm);
+ }
+
+ refc = (Uint) erts_atomic32_read_nob(&mdp->refc);
+ ASSERT(refc > 0);
+
+ return size / refc;
+}
+
+
+/* suspend monitors... */
+
+ErtsMonitorSuspend *
+erts_monitor_suspend_create(Eterm pid)
+{
+ ErtsMonitorSuspend *msp;
+
+ ERTS_ML_ASSERT(is_internal_pid(pid));
+
+ msp = erts_alloc(ERTS_ALC_T_SUSPEND_MON,
+ sizeof(ErtsMonitorSuspend));
+ msp->mon.offset = (Uint16) offsetof(ErtsMonitorSuspend, mon);
+ msp->mon.key_offset = (Uint16) offsetof(ErtsMonitor, other.item);
+ msp->mon.other.item = pid;
+ msp->mon.flags = 0;
+ msp->mon.type = ERTS_MON_TYPE_SUSPEND;
+ msp->pending = 0;
+ msp->active = 0;
+ return msp;
+}
+
+static ErtsMonLnkNode *
+create_monitor_suspend(Eterm pid, void *unused)
+{
+ ErtsMonitorSuspend *msp = erts_monitor_suspend_create(pid);
+ return (ErtsMonLnkNode *) &msp->mon;
+}
+
+ErtsMonitorSuspend *
+erts_monitor_suspend_tree_lookup_create(ErtsMonitor **root, int *created,
+ Eterm pid)
+{
+ ErtsMonitor *mon;
+ mon = (ErtsMonitor *) ml_rbt_lookup_create((ErtsMonLnkNode **) root,
+ pid, create_monitor_suspend,
+ NULL,
+ created);
+ return erts_monitor_suspend(mon);
+}
+
+void
+erts_monitor_suspend_destroy(ErtsMonitorSuspend *msp)
+{
+ ERTS_ML_ASSERT(!(msp->mon.flags & ERTS_ML_FLG_IN_TABLE));
+ erts_free(ERTS_ALC_T_SUSPEND_MON, msp);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Link Operations *
+ * *
+\* */
+
+#ifdef ERTS_ML_DEBUG
+size_t erts_link_a_offset;
+size_t erts_link_b_offset;
+size_t erts_link_key_offset;
+#endif
+
+static ERTS_INLINE void
+link_init(void)
+{
+#ifdef ERTS_ML_DEBUG
+ erts_link_a_offset = offsetof(ErtsLinkData, a);
+ erts_link_b_offset = offsetof(ErtsLinkData, b);
+ erts_link_key_offset = offsetof(ErtsLink, other.item);
+#endif
+}
+
+ErtsLink *
+erts_link_tree_lookup(ErtsLink *root, Eterm key)
+{
+ ASSERT(is_pid(key) || is_internal_port(key));
+ return (ErtsLink *) ml_rbt_lookup((ErtsMonLnkNode *) root, key);
+}
+
+ErtsLink *
+erts_link_tree_lookup_insert(ErtsLink **root, ErtsLink *lnk)
+{
+ return (ErtsLink *) ml_rbt_lookup_insert((ErtsMonLnkNode **) root,
+ (ErtsMonLnkNode *) lnk);
+}
+
+typedef struct {
+ Uint16 type;
+ Eterm a;
+} ErtsLinkCreateCtxt;
+
+static ErtsMonLnkNode *
+create_link(Eterm b, void *vcctxt)
+{
+ ErtsLinkCreateCtxt *cctxt = vcctxt;
+ ErtsLinkData *ldp = erts_link_create(cctxt->type, cctxt->a, b);
+ ERTS_ML_ASSERT(ml_cmp_keys(ldp->a.other.item, b) == 0);
+ return (ErtsMonLnkNode *) &ldp->a;
+}
+
+ErtsLink *erts_link_tree_lookup_create(ErtsLink **root, int *created,
+ Uint16 type, Eterm this,
+ Eterm other)
+{
+ ErtsLinkCreateCtxt cctxt;
+ cctxt.type = type;
+ cctxt.a = this;
+ return (ErtsLink *) ml_rbt_lookup_create((ErtsMonLnkNode **) root,
+ other, create_link,
+ (void *) &cctxt,
+ created);
+}
+
+void
+erts_link_tree_insert(ErtsLink **root, ErtsLink *lnk)
+{
+ ml_rbt_insert((ErtsMonLnkNode **) root, (ErtsMonLnkNode *) lnk);
+}
+
+void
+erts_link_tree_replace(ErtsLink **root, ErtsLink *old, ErtsLink *new)
+{
+ ml_rbt_replace((ErtsMonLnkNode **) root,
+ (ErtsMonLnkNode *) old,
+ (ErtsMonLnkNode *) new);
+}
+
+void
+erts_link_tree_delete(ErtsLink **root, ErtsLink *lnk)
+{
+ ml_rbt_delete((ErtsMonLnkNode **) root, (ErtsMonLnkNode *) lnk);
+}
+
+void
+erts_link_tree_foreach(ErtsLink *root,
+ void (*func)(ErtsLink *, void *),
+ void *arg)
+{
+ ml_rbt_foreach((ErtsMonLnkNode *) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg);
+
+}
+
+int
+erts_link_tree_foreach_yielding(ErtsLink *root,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_rbt_foreach_yielding((ErtsMonLnkNode *) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_link_tree_foreach_delete(ErtsLink **root,
+ void (*func)(ErtsLink *, void *),
+ void *arg)
+{
+ ml_rbt_foreach_delete((ErtsMonLnkNode **) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg);
+}
+
+int
+erts_link_tree_foreach_delete_yielding(ErtsLink **root,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_rbt_foreach_delete_yielding((ErtsMonLnkNode **) root,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_link_list_foreach(ErtsLink *list,
+ void (*func)(ErtsLink *, void *),
+ void *arg)
+{
+ void *ystate = NULL;
+ while (ml_dl_list_foreach_yielding((ErtsMonLnkNode *) list,
+ (void (*)(ErtsMonLnkNode *, void *)) func,
+ arg, &ystate, (Sint) INT_MAX));
+}
+
+int
+erts_link_list_foreach_yielding(ErtsLink *list,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_dl_list_foreach_yielding((ErtsMonLnkNode *) list,
+ (void (*)(ErtsMonLnkNode *, void *)) func,
+ arg, vyspp, limit);
+}
+
+void
+erts_link_list_foreach_delete(ErtsLink **list,
+ void (*func)(ErtsLink *, void *),
+ void *arg)
+{
+ void *ystate = NULL;
+ while (ml_dl_list_foreach_delete_yielding((ErtsMonLnkNode **) list,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, &ystate, (Sint) INT_MAX));
+}
+
+int
+erts_link_list_foreach_delete_yielding(ErtsLink **list,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit)
+{
+ return ml_dl_list_foreach_delete_yielding((ErtsMonLnkNode **) list,
+ (void (*)(ErtsMonLnkNode*, void*)) func,
+ arg, vyspp, limit);
+}
+
+ErtsLinkData *
+erts_link_create(Uint16 type, Eterm a, Eterm b)
+{
+ ErtsLinkData *ldp;
+
+#ifdef ERTS_ML_DEBUG
+ switch (type) {
+ case ERTS_LNK_TYPE_PROC:
+ ERTS_ML_ASSERT(is_internal_pid(a) && is_internal_pid(a));
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ ERTS_ML_ASSERT(is_internal_pid(a) || is_internal_pid(b));
+ ERTS_ML_ASSERT(is_internal_port(a) || is_internal_port(b));
+ break;
+ case ERTS_LNK_TYPE_DIST_PROC:
+ ERTS_ML_ASSERT(is_internal_pid(a) || is_internal_pid(b));
+ ERTS_ML_ASSERT(is_external_pid(a) || is_external_pid(b));
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Invalid link type");
+ break;
+ }
+#endif
+
+ if (type != ERTS_LNK_TYPE_DIST_PROC) {
+ ldp = erts_alloc(ERTS_ALC_T_LINK, sizeof(ErtsLinkData));
+
+ ldp->a.other.item = b;
+ ldp->a.flags = (Uint16) 0;
+
+ ldp->b.other.item = a;
+ ldp->b.flags = (Uint16) 0;
+ }
+ else {
+ ErtsLinkDataExtended *ldep;
+ Uint size, hsz;
+ Eterm *hp;
+ ErlOffHeap oh;
+
+ if (is_internal_pid(a))
+ hsz = NC_HEAP_SIZE(b);
+ else
+ hsz = NC_HEAP_SIZE(a);
+ ERTS_ML_ASSERT(hsz > 0);
+
+ size = sizeof(ErtsLinkDataExtended) - sizeof(Eterm);
+ size += hsz*sizeof(Eterm);
+
+ ldp = erts_alloc(ERTS_ALC_T_LINK_EXT, size);
+
+ ldp->a.flags = ERTS_ML_FLG_EXTENDED;
+ ldp->b.flags = ERTS_ML_FLG_EXTENDED;
+
+ ldep = (ErtsLinkDataExtended *) ldp;
+ hp = &ldep->heap[0];
+
+ ERTS_INIT_OFF_HEAP(&oh);
+
+ if (is_internal_pid(a)) {
+ ldp->a.other.item = STORE_NC(&hp, &oh, b);
+ ldp->b.other.item = a;
+ }
+ else {
+ ldp->a.other.item = b;
+ ldp->b.other.item = STORE_NC(&hp, &oh, a);
+ }
+
+ ldep->ohhp = oh.first;
+ ldep->dist = NULL;
+ }
+
+ erts_atomic32_init_nob(&ldp->refc, 2);
+
+ ldp->a.key_offset = (Uint16) offsetof(ErtsLink, other.item);
+ ldp->a.offset = (Uint16) offsetof(ErtsLinkData, a);
+ ldp->a.type = type;
+
+ ldp->b.key_offset = (Uint16) offsetof(ErtsLink, other.item);
+ ldp->b.offset = (Uint16) offsetof(ErtsLinkData, b);
+ ldp->b.type = type;
+
+ return ldp;
+}
+
+/*
+ * erts_link_destroy__() should only be called from
+ * erts_link_release() or erts_link_release_both().
+ */
+void
+erts_link_destroy__(ErtsLinkData *ldp)
+{
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&ldp->refc) == 0);
+ ERTS_ML_ASSERT(!(ldp->a.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(!(ldp->b.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT((ldp->a.flags & ERTS_ML_FLGS_SAME)
+ == (ldp->b.flags & ERTS_ML_FLGS_SAME));
+
+ if (!(ldp->a.flags & ERTS_ML_FLG_EXTENDED))
+ erts_free(ERTS_ALC_T_LINK, ldp);
+ else {
+ ErtsLinkDataExtended *ldep = (ErtsLinkDataExtended *) ldp;
+ ErlOffHeap oh;
+ if (ldep->ohhp) {
+ ERTS_INIT_OFF_HEAP(&oh);
+ oh.first = ldep->ohhp;
+ erts_cleanup_offheap(&oh);
+ }
+ if (ldep->dist)
+ erts_mon_link_dist_dec_refc(ldep->dist);
+ erts_free(ERTS_ALC_T_LINK_EXT, ldep);
+ }
+}
+
+void
+erts_link_set_dead_dist(ErtsLink *lnk, Eterm nodename)
+{
+ ErtsLinkDataExtended *ldep;
+ ldep = (ErtsLinkDataExtended *) erts_link_to_data(lnk);
+
+ ERTS_ML_ASSERT(lnk->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(lnk->type == ERTS_LNK_TYPE_DIST_PROC);
+ ERTS_ML_ASSERT(!ldep->dist);
+
+ ldep->dist = erts_mon_link_dist_create(nodename);
+ ldep->dist->alive = 0;
+}
+
+Uint
+erts_link_size(ErtsLink *lnk)
+{
+ Uint size, refc;
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+
+ if (!(lnk->flags & ERTS_ML_FLG_EXTENDED))
+ size = sizeof(ErtsLinkData);
+ else {
+ ErtsLinkDataExtended *ldep = (ErtsLinkDataExtended *) ldp;
+
+ ASSERT(lnk->type == ERTS_LNK_TYPE_DIST_PROC);
+ ASSERT(is_external_pid_header(ldep->heap[0]));
+
+ size = sizeof(ErtsLinkDataExtended);
+ size += thing_arityval(ldep->heap[0])*sizeof(Eterm);
+ }
+
+ refc = (Uint) erts_atomic32_read_nob(&ldp->refc);
+ ASSERT(refc > 0);
+
+ return size / refc;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Misc *
+\* */
+
+void
+erts_monitor_link_init(void)
+{
+ monitor_init();
+ link_init();
+}
diff --git a/erts/emulator/beam/erl_monitor_link.h b/erts/emulator/beam/erl_monitor_link.h
new file mode 100644
index 0000000000..603aead8cc
--- /dev/null
+++ b/erts/emulator/beam/erl_monitor_link.h
@@ -0,0 +1,2326 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * Description: Monitor and link implementation.
+ *
+ * === Monitors ==================================================
+ *
+ * The monitor data structure contains:
+ * - an 'origin' part that should be inserted in a data structure
+ * of the origin entity, i.e., the entity monitoring another
+ * entity
+ * - a 'target' part that should be inserted in a data structure
+ * of the target entity, i.e., the entity being monitored by
+ * another entity
+ * - a shared part that contains information shared between both
+ * origin and target entities
+ *
+ * That is, the two halves of the monitor as well as shared data
+ * are allocated in one single continuous memory block. The
+ * origin and target parts can separately each be inserted in
+ * either a (red-black) tree, a (circular double linked) list, or
+ * in a process signal queue.
+ *
+ * Each process and port contains:
+ * - a monitor list for local target monitors that is accessed
+ * via the ERTS_P_LT_MONITORS() macro, and
+ * - a monitor tree for other monitors that is accessed via the
+ * ERTS_P_MONITORS() macro
+ *
+ * These fields of processes/ports are protected by the main lock
+ * of the process/port. These are only intended to be accessed by
+ * the process/port itself. When setting up or tearing down a
+ * monitor one should *only* operate on the monitor tree/list of
+ * the currently executing process/port and send signals to the
+ * other involved process/port so it can modify its own monitor
+ * tree/list by itself (see erl_proc_sig_queue.h). One should
+ * absolutely *not* acquire the lock of the other involved
+ * process/port and operate on its monitor tree/list directly.
+ *
+ * Each dist entry contains a monitor/link dist structure that
+ * contains:
+ * - a monitor tree for origin named monitors that is accessed via
+ * the field 'orig_name_monitors', and
+ * - a monitor list for other monitors that is accessed via the
+ * 'monitors' field.
+ * Monitors in these fields contain information about all monitors
+ * over this specific connection.
+ *
+ * The fields of the dist structure are protected by a mutex in
+ * the same dist structure. Operations on these fields are
+ * normally performed by the locally involved process only,
+ * except when a connection is taken down. However in the case
+ * of distributed named monitors that originates from another
+ * node this is not possible. That is this operation is also
+ * performed from another context that the locally involved
+ * process.
+ *
+ * Access to monitor trees are performed using the
+ * erts_monitor_tree_* functions below. Access to monitor lists
+ * are performed using the erts_monitor_list_* functions below.
+ *
+ *
+ * The different monitor types:
+ *
+ * --- ERTS_MON_TYPE_PROC ----------------------------------------
+ *
+ * A local process (origin) monitors another local process
+ * (target).
+ *
+ * Origin:
+ * Other Item: Target process identifier
+ * Target:
+ * Other Item: Origin process identifier
+ * Shared:
+ * Key: Reference
+ * Name: Name (atom) if by name
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process and target part of the monitor is stored in
+ * monitor list for local targets on the target process.
+ *
+ * --- ERTS_MON_TYPE_PORT ----------------------------------------
+ *
+ * A local process (origin) monitors a local port (target), or a
+ * local port (origin) monitors a local process (target).
+ *
+ * Origin:
+ * Other Item: Target process/port identifier
+ * Target:
+ * Other Item: Origin process/port identifier
+ * Shared:
+ * Key: Reference
+ * Name: Name (atom) if by name
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process/port and target part of the monitor is stored
+ * in monitor list for local targets on the target process/port.
+ *
+ *
+ * --- ERTS_MON_TYPE_TIME_OFFSET ---------------------------------
+ *
+ * A local process (origin) monitors time offset (target)
+ *
+ * Origin:
+ * Other Item: clock_service
+ * Target:
+ * Other Item: Origin process identifier
+ * Shared:
+ * Key: Reference
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process and target part of the monitor is stored in
+ * monitor list referred by the variable 'time_offset_monitors'
+ * (see erl_time_sup.c).
+ *
+ *
+ * --- ERTS_MON_TYPE_DIST_PROC -----------------------------------
+ *
+ * A local process (origin) monitors a remote process (target).
+ * Origin node on local process and target node on dist entry.
+ *
+ * Origin:
+ * Other Item: Remote process identifier/Node name
+ * if by name
+ * Target:
+ * Other Item: Local process identifier
+ * Shared:
+ * Key: Reference
+ * Name: Name (atom) if by name
+ * Dist: Pointer to dist structure
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process and target part of the monitor is stored in
+ * monitor list referred by 'monitors' field of the dist
+ * structure.
+ *
+ *
+ * A remote process (origin) monitors a local process (target).
+ * Origin node on dist entry and target node on local process.
+ *
+ * Origin:
+ * Other Item: Local process identifier
+ * Target:
+ * Other Item: Remote process identifier
+ * Shared:
+ * Key: Reference
+ * Name: Name (atom) if by name
+ *
+ * Valid keys are only external references.
+ *
+ * If monitor by name, the origin part of the monitor is stored
+ * in the monitor tree referred by 'orig_name_monitors' field in
+ * dist structure; otherwise in the monitor list referred by
+ * 'monitors' field in dist structure. The target part of the
+ * monitor is stored in the monitor tree of the local target
+ * process.
+ *
+ *
+ * --- ERTS_MON_TYPE_RESOURCE ------------------------------------
+ *
+ * A NIF resource (origin) monitors a process (target).
+ *
+ * Origin:
+ * Other Item: Target process identifier
+ * Target:
+ * Other Ptr: Pointer to resource
+ * Shared:
+ * Key: Reference
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin resource (see erl_nif.c) and target part of the
+ * monitor is stored in monitor list for local targets on the
+ * target process.
+ *
+ * --- ERTS_MON_TYPE_NODE ----------------------------------------
+ *
+ * A local process (origin) monitors a distribution connection
+ * (target) via erlang:monitor_node().
+ *
+ * Origin:
+ * Other Item: Node name (atom)
+ * Key: Node name
+ * Target:
+ * Other Item: Origin process identifier
+ * Key: Origin process identifier
+ * Shared:
+ * Refc: Number of invocations
+ *
+ * Valid keys are only node-name atoms and internal process
+ * identifiers.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process and target part of the monitor is stored in
+ * monitor list referred by 'monitors' field of the dist
+ * structure.
+ *
+ * --- ERTS_MON_TYPE_NODES ---------------------------------------
+ *
+ * A local process (origin) monitors all connections (target),
+ * via net_kernel:monitor_nodes().
+ *
+ * Origin:
+ * Other Item: Bit mask (small)
+ * Key: Bit mask
+ * Target:
+ * Other Item: Origin process identifier
+ * Key: Origin process identifier
+ * Shared:
+ * Refc: Number of invocations
+ *
+ * Valid keys are only small integers and internal process
+ * identifiers.
+ *
+ * Origin part of the monitor is stored in the monitor tree of
+ * origin process and target part of the monitor is stored in
+ * monitor list referred by the variable 'nodes_monitors' (see
+ * dist.c).
+ *
+ * --- ERTS_MON_TYPE_SUSPEND -------------------------------------
+ *
+ * Suspend monitor.
+ *
+ * Other Item: Suspendee process identifier
+ * Key: Suspendee process identifier
+ *
+ * Valid keys are only ordinary internal references.
+ *
+ * This type of monitor is a bit strange and the whole process
+ * suspend functionality should be improved...
+ *
+ *
+ *
+ * === Links =====================================================
+ *
+ * The link data structure contains:
+ * - an 'a' part that should be inserted in a data structure of
+ * one entity and contains the identifier of the other involved
+ * entity (b)
+ * - a 'b' part that should be inserted in a data structure of
+ * the other involved entity and contains the identifier of the
+ * other involved entity (a)
+ * - shared part that contains information shared between both
+ * involved entities
+ *
+ * That is, the two halves of the link as well as shared data
+ * are allocated in one single continuous memory block. The 'a'
+ * and the 'b' parts can separately each be inserted in either
+ * a (red-black) tree, a (circular double linked) list, or in a
+ * process signal queue.
+ *
+ * Each process and port contains:
+ * - a link tree for links that is accessed via the
+ * ERTS_P_LINKS() macro
+ *
+ * This field of processes/ports is protected by the main lock of
+ * the process/port. It is only intended to be accessed by the
+ * process/port itself. When setting up or tearing down a link
+ * one should *only* operate on the link tree of the currently
+ * executing process/port and send signals to the other involved
+ * process/port so it can modify its own monitor tree by itself
+ * (see erl_proc_sig_queue.h). One should absolutely *not*
+ * acquire the lock of the other involved process/port and
+ * operate on its link tree directly.
+ *
+ * Each dist entry contains a monitor/link dist structure that
+ * contains:
+ * - a link list for links via the 'links' field.
+ * Links in this field contain information about all links over
+ * this specific connection.
+ *
+ * The fields of the dist structure are protected by a mutex in
+ * the same dist structure. Operation on the 'links' fields are
+ * normally performed by the locally involved process only,
+ * except when a connection is taken down.
+ *
+ * Access to link trees are performed using the erts_link_tree_*
+ * functions below. Access to link lists are performed using the
+ * erts_link_list_* functions below.
+ *
+ * There can only be one link between the same pair of
+ * processes/ports. Since a link can be simultaneously initiated
+ * from both ends we always save the link data structure with the
+ * lowest address if multiple links should appear between the
+ * same pair of processes/ports.
+ *
+ *
+ * The different link types:
+ *
+ * --- ERTS_LNK_TYPE_PROC -----------------------------------------
+ *
+ * A link between a local process A and a local process B.
+ *
+ * A:
+ * Other Item: B process identifier
+ * Key: B process identifier
+ * B:
+ * Other Item: A process identifier
+ * Key: A process identifier
+ *
+ * Valid keys are only internal process identifiers.
+ *
+ * 'A' part of the link stored in the link tree of process A and
+ * 'B' part of the link is stored in link tree of process B.
+ *
+ * --- ERTS_LNK_TYPE_PORT -----------------------------------------
+ *
+ * A link between a local process/port A and a local process/port
+ * B.
+ *
+ * A:
+ * Other Item: B process/port identifier
+ * Key: B process/port identifier
+ * B:
+ * Other Item: A process/port identifier
+ * Key: A process/port identifier
+ *
+ * Valid keys are internal process identifiers and internal port
+ * identifiers.
+ *
+ * 'A' part of the link stored in the link tree of process/port
+ * A and 'B' part of the link is stored in link tree of
+ * process/port B.
+ *
+ * --- ERTS_LNK_TYPE_DIST_PROC ------------------------------------
+ *
+ * A link between a local process and a remote process. Either of
+ * the processes can be used as A or B.
+ *
+ * A:
+ * Other Item: B process identifier
+ * Key: B process identifier
+ * B:
+ * Other Item: A process identifier
+ * Key: A process identifier
+ * Shared:
+ * Dist: Pointer to dist structure
+ *
+ * Valid keys are internal and external process identifiers.
+ *
+ * The part of the link with a remote pid as "other item" is
+ * stored in the link tree of the local process. The part of
+ * the link with a local pid as "other item" is stored in the
+ * links list of the dist structure.
+ *
+ * ===============================================================
+ *
+ * Author: Rickard Green
+ *
+ */
+
+#ifndef ERL_MONITOR_LINK_H__
+#define ERL_MONITOR_LINK_H__
+
+#define ERTS_PROC_SIG_QUEUE_TYPE_ONLY
+#include "erl_proc_sig_queue.h"
+#undef ERTS_PROC_SIG_QUEUE_TYPE_ONLY
+
+#if defined(DEBUG) || 0
+# define ERTS_ML_DEBUG
+#else
+# undef ERTS_ML_DEBUG
+#endif
+
+#ifdef ERTS_ML_DEBUG
+# define ERTS_ML_ASSERT ERTS_ASSERT
+#else
+# define ERTS_ML_ASSERT(E) ((void) 1)
+#endif
+
+#define ERTS_MON_TYPE_MAX ((Uint16) 7)
+
+#define ERTS_MON_TYPE_PROC ((Uint16) 0)
+#define ERTS_MON_TYPE_PORT ((Uint16) 1)
+#define ERTS_MON_TYPE_TIME_OFFSET ((Uint16) 2)
+#define ERTS_MON_TYPE_DIST_PROC ((Uint16) 3)
+#define ERTS_MON_TYPE_RESOURCE ((Uint16) 4)
+#define ERTS_MON_TYPE_NODE ((Uint16) 5)
+#define ERTS_MON_TYPE_NODES ((Uint16) 6)
+#define ERTS_MON_TYPE_SUSPEND ERTS_MON_TYPE_MAX
+
+#define ERTS_MON_LNK_TYPE_MAX (ERTS_MON_TYPE_MAX + ((Uint16) 3))
+#define ERTS_LNK_TYPE_MAX ERTS_MON_LNK_TYPE_MAX
+
+#define ERTS_LNK_TYPE_PROC (ERTS_MON_TYPE_MAX + ((Uint16) 1))
+#define ERTS_LNK_TYPE_PORT (ERTS_MON_TYPE_MAX + ((Uint16) 2))
+#define ERTS_LNK_TYPE_DIST_PROC ERTS_LNK_TYPE_MAX
+
+#define ERTS_ML_FLG_TARGET (((Uint16) 1) << 0)
+#define ERTS_ML_FLG_IN_TABLE (((Uint16) 1) << 1)
+#define ERTS_ML_FLG_IN_SUBTABLE (((Uint16) 1) << 2)
+#define ERTS_ML_FLG_NAME (((Uint16) 1) << 3)
+#define ERTS_ML_FLG_EXTENDED (((Uint16) 1) << 4)
+
+#define ERTS_ML_FLG_DBG_VISITED (((Uint16) 1) << 15)
+
+/* Flags that should be the same on both monitor/link halves */
+#define ERTS_ML_FLGS_SAME \
+ (ERTS_ML_FLG_EXTENDED|ERTS_ML_FLG_NAME)
+
+typedef struct ErtsMonLnkNode__ ErtsMonLnkNode;
+
+typedef struct {
+ UWord parent; /* Parent ptr and flags... */
+ ErtsMonLnkNode *right;
+ ErtsMonLnkNode *left;
+} ErtsMonLnkTreeNode;
+
+typedef struct {
+ ErtsMonLnkNode *next;
+ ErtsMonLnkNode *prev;
+} ErtsMonLnkListNode;
+
+struct ErtsMonLnkNode__ {
+ union {
+ ErtsSignalCommon signal;
+ ErtsMonLnkTreeNode tree;
+ ErtsMonLnkListNode list;
+ } node;
+ union {
+ Eterm item;
+ void *ptr;
+ } other;
+ Uint16 offset; /* offset from monitor/link data to this structure (node) */
+ Uint16 key_offset; /* offset from this structure (node) to key */
+ Uint16 flags;
+ Uint16 type;
+};
+
+typedef struct {
+ Eterm nodename;
+ Uint32 connection_id;
+ erts_atomic_t refc;
+ erts_mtx_t mtx;
+ int alive;
+ ErtsMonLnkNode *links; /* Link double linked circular list */
+ ErtsMonLnkNode *monitors; /* Monitor double linked circular list */
+ ErtsMonLnkNode *orig_name_monitors; /* Origin named monitors
+ read-black tree */
+} ErtsMonLnkDist;
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Misc *
+\* */
+
+/**
+ *
+ * @brief Initialize monitor/link implementation
+ *
+ */
+void erts_monitor_link_init(void);
+
+/**
+ *
+ * @brief Create monitor/link dist structure to attach to dist entry
+ *
+ * Create dist structure containing monitor and link containers. This
+ * structure is to be attached to a connected dist entry.
+ *
+ * @param[in] nodename Node name as an atom
+ *
+ * @returns Pointer to dist structure
+ *
+ */
+ErtsMonLnkDist *erts_mon_link_dist_create(Eterm nodename);
+
+/**
+ *
+ * @brief Increase reference count of monitor/link dist structure
+ *
+ * @param[in] mld Pointer to dist structure
+ *
+ */
+ERTS_GLB_INLINE void erts_mon_link_dist_inc_refc(ErtsMonLnkDist *mld);
+
+/**
+ *
+ * @brief Decrease reference count of monitor/link dist structure
+ *
+ * @param[in] mld Pointer to dist structure
+ *
+ */
+ERTS_GLB_INLINE void erts_mon_link_dist_dec_refc(ErtsMonLnkDist *mld);
+
+/* internal functions... */
+ERTS_GLB_INLINE void erts_ml_dl_list_insert__(ErtsMonLnkNode **list,
+ ErtsMonLnkNode *ml);
+ERTS_GLB_INLINE void erts_ml_dl_list_delete__(ErtsMonLnkNode **list,
+ ErtsMonLnkNode *ml);
+ERTS_GLB_INLINE ErtsMonLnkNode *erts_ml_dl_list_first__(ErtsMonLnkNode *list);
+ERTS_GLB_INLINE ErtsMonLnkNode *erts_ml_dl_list_last__(ErtsMonLnkNode *list);
+void erts_mon_link_dist_destroy__(ErtsMonLnkDist *mld);
+ERTS_GLB_INLINE void *erts_ml_node_to_main_struct__(ErtsMonLnkNode *mln);
+
+/* implementations for globally inlined misc functions... */
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE void
+erts_mon_link_dist_inc_refc(ErtsMonLnkDist *mld)
+{
+ ERTS_ML_ASSERT(erts_atomic_read_nob(&mld->refc) > 0);
+ erts_atomic_inc_nob(&mld->refc);
+}
+
+ERTS_GLB_INLINE void
+erts_mon_link_dist_dec_refc(ErtsMonLnkDist *mld)
+{
+ ERTS_ML_ASSERT(erts_atomic_read_nob(&mld->refc) > 0);
+ if (erts_atomic_dec_read_nob(&mld->refc) == 0)
+ erts_mon_link_dist_destroy__(mld);
+}
+
+ERTS_GLB_INLINE void *
+erts_ml_node_to_main_struct__(ErtsMonLnkNode *mln)
+{
+ return (void *) (((char *) mln) - ((size_t) mln->offset));
+}
+
+ERTS_GLB_INLINE void
+erts_ml_dl_list_insert__(ErtsMonLnkNode **list, ErtsMonLnkNode *ml)
+{
+ ErtsMonLnkNode *first = *list;
+ ERTS_ML_ASSERT(!(ml->flags & ERTS_ML_FLG_IN_TABLE));
+ if (!first) {
+ ml->node.list.next = ml->node.list.prev = ml;
+ *list = ml;
+ }
+ else {
+ ERTS_ML_ASSERT(first->node.list.prev->node.list.next == first);
+ ERTS_ML_ASSERT(first->node.list.next->node.list.prev == first);
+ ml->node.list.next = first;
+ ml->node.list.prev = first->node.list.prev;
+ first->node.list.prev = ml;
+ ml->node.list.prev->node.list.next = ml;
+ }
+ ml->flags |= ERTS_ML_FLG_IN_TABLE;
+}
+
+ERTS_GLB_INLINE void
+erts_ml_dl_list_delete__(ErtsMonLnkNode **list, ErtsMonLnkNode *ml)
+{
+ ERTS_ML_ASSERT(ml->flags & ERTS_ML_FLG_IN_TABLE);
+ if (ml->node.list.next == ml) {
+ ERTS_ML_ASSERT(ml->node.list.prev == ml);
+ ERTS_ML_ASSERT(*list == ml);
+
+ *list = NULL;
+ }
+ else {
+ ERTS_ML_ASSERT(ml->node.list.prev->node.list.next == ml);
+ ERTS_ML_ASSERT(ml->node.list.prev != ml);
+ ERTS_ML_ASSERT(ml->node.list.next->node.list.prev == ml);
+ ERTS_ML_ASSERT(ml->node.list.next != ml);
+
+ if (*list == ml)
+ *list = ml->node.list.next;
+ ml->node.list.prev->node.list.next = ml->node.list.next;
+ ml->node.list.next->node.list.prev = ml->node.list.prev;
+ }
+ ml->flags &= ~ERTS_ML_FLG_IN_TABLE;
+}
+
+ERTS_GLB_INLINE ErtsMonLnkNode *
+erts_ml_dl_list_first__(ErtsMonLnkNode *list)
+{
+ return list;
+}
+
+ERTS_GLB_INLINE ErtsMonLnkNode *
+erts_ml_dl_list_last__(ErtsMonLnkNode *list)
+{
+ if (!list)
+ return NULL;
+ return list->node.list.prev;
+}
+
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Monitor Operations *
+\* */
+
+
+typedef struct ErtsMonLnkNode__ ErtsMonitor;
+
+typedef struct {
+ ErtsMonitor origin;
+ ErtsMonitor target;
+ Eterm ref;
+ erts_atomic32_t refc;
+} ErtsMonitorData;
+
+typedef struct {
+ ErtsMonitorData md;
+ ErtsORefThing oref_thing;
+} ErtsMonitorDataHeap;
+
+typedef struct ErtsMonitorDataExtended__ ErtsMonitorDataExtended;
+
+struct ErtsMonitorDataExtended__ {
+ ErtsMonitorData md;
+ union {
+ Eterm name;
+ Uint refc;
+ } u;
+ union {
+ struct erl_off_heap_header *ohhp;
+ ErtsMonitor *node_monitors;
+ } uptr;
+ ErtsMonLnkDist *dist;
+ Eterm heap[1]; /* heap start... */
+};
+
+typedef struct {
+ ErtsMonitor mon;
+ int pending;
+ int active;
+} ErtsMonitorSuspend;
+
+/*
+ * --- Monitor tree operations ---
+ */
+
+/**
+ *
+ * @brief Lookup a monitor in a monitor tree
+ *
+ *
+ * @param[in] root Pointer to root of monitor tree
+ *
+ * @param[in] key Key of monitor to lookup
+ *
+ * @returns Pointer to a monitor with the
+ * key 'key', or NULL if no such
+ * monitor was found
+ *
+ */
+ErtsMonitor *erts_monitor_tree_lookup(ErtsMonitor *root, Eterm key);
+
+/**
+ *
+ * @brief Lookup or insert a monitor in a monitor tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is not part of any tree or list
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] mon Monitor to insert if no monitor
+ * with the same key already exists
+ *
+ * @returns Pointer to a monitor with the
+ * key 'key'. If no monitor with the key
+ * 'key' was found and 'mon' was inserted
+ * 'mon' is returned.
+ *
+ */
+ErtsMonitor *erts_monotor_tree_lookup_insert(ErtsMonitor **root,
+ ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Lookup or create a node or a nodes monitor in a monitor tree.
+ *
+ * Looks up an origin monitor with the key 'target' in the monitor tree.
+ * If it is not found, creates a monitor and returns a pointer to the
+ * origin monitor.
+ *
+ * When the funcion is called it is assumed that:
+ * - no target monitors with the key 'target' exists in the tree.
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[out] created Pointer to integer. The integer is set to
+ * a non-zero value if no monitor with key
+ * 'target' was found, and a new monitor
+ * was created. If a monitor was found, it
+ * is set to zero.
+ *
+ * @param[in] type ERTS_MON_TYPE_NODE | ERTS_MON_TYPE_NODES
+ *
+ * @param[in] origin The key of the origin
+ *
+ * @param[in] target The key of the target
+ *
+ */
+ErtsMonitor *erts_monitor_tree_lookup_create(ErtsMonitor **root, int *created,
+ Uint16 type, Eterm origin,
+ Eterm target);
+
+/**
+ *
+ * @brief Insert a monitor in a monitor tree
+ *
+ * When the funcion is called it is assumed that:
+ * - no monitors with the same key that 'mon' exist in the tree
+ * - 'mon' is not part of any list of tree
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] mon Monitor to insert.
+ *
+ */
+void erts_monitor_tree_insert(ErtsMonitor **root, ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Replace a monitor in a monitor tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'old' monitor and 'new' monitor have exactly the same key
+ * - 'old' monitor is part of the tree
+ * - 'new' monitor is not part of any tree or list
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] old Monitor to remove from the tree
+ *
+ * @param[in] new Monitor to insert into the tree
+ *
+ */
+void erts_monitor_tree_replace(ErtsMonitor **root, ErtsMonitor *old,
+ ErtsMonitor *new);
+
+/**
+ *
+ * @brief Delete a monitor from a monitor tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is part of the tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] mon Monitor to remove from the tree
+ *
+ */
+void erts_monitor_tree_delete(ErtsMonitor **root, ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Call a function for each monitor in a monitor tree
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * @param[in] root Pointer to root of monitor tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_monitor_tree_foreach(ErtsMonitor *root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Call a function for each monitor in a monitor tree. Yield
+ * if lots of monitors exist.
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetedly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] root Pointer to root of monitor tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of monitors to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all monitors has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_monitor_tree_foreach_yielding(ErtsMonitor *root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/**
+ *
+ * @brief Delete all monitors from a monitor tree and call a function for
+ * each monitor
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_monitor_tree_foreach_delete(ErtsMonitor **root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Delete all monitors from a monitor tree and call a function for
+ * each monitor
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetededly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of monitor tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of monitors to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all monitors has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_monitor_tree_foreach_delete_yielding(ErtsMonitor **root,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/*
+ * --- Monitor list operations --
+ */
+
+/**
+ *
+ * @brief Insert a monitor in a monitor list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is not part of any list or tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to monitor list
+ *
+ * @param[in] mon Monitor to insert
+ *
+ */
+ERTS_GLB_INLINE void erts_monitor_list_insert(ErtsMonitor **list, ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Delete a monitor from a monitor list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is part of the list
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to monitor list
+ *
+ * @param[in] mon Monitor to remove from the list
+ *
+ */
+ERTS_GLB_INLINE void erts_monitor_list_delete(ErtsMonitor **list, ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Get a pointer to first monitor in a monitor list
+ *
+ * The monitor will still remain in the list after the return
+ *
+ * @param[in] list Pointer to monitor list
+ *
+ * @returns Pointer to first monitor in list if
+ * list is not empty. If list is empty
+ * NULL is returned.
+ *
+ */
+ERTS_GLB_INLINE ErtsMonitor *erts_monitor_list_first(ErtsMonitor *list);
+
+/**
+ *
+ * @brief Get a pointer to last monitor in a monitor list
+ *
+ * The monitor will still remain in the list after the return
+ *
+ * @param[in] list Pointer to monitor list
+ *
+ * @returns Pointer to last monitor in list if
+ * list is not empty. If list is empty
+ * NULL is returned.
+ *
+ */
+ERTS_GLB_INLINE ErtsMonitor *erts_monitor_list_last(ErtsMonitor *list);
+
+/**
+ *
+ * @brief Call a function for each monitor in a monitor list
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'list'.
+ *
+ * @param[in] list Pointer to root of monitor list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_monitor_list_foreach(ErtsMonitor *list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Call a function for each monitor in a monitor list. Yield
+ * if lots of monitors exist.
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetedly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] list Pointer to monitor list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of monitors to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all monitors has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_monitor_list_foreach_yielding(ErtsMonitor *list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/**
+ *
+ * @brief Delete all monitors from a monitor list and call a function for
+ * each monitor
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * @param[in,out] list Pointer to pointer to monitor list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_monitor_list_foreach_delete(ErtsMonitor **list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Delete all monitors from a monitor list and call a function for
+ * each monitor
+ *
+ * The funcion 'func' will be called with a pointer to a monitor
+ * as first argument and 'arg' as second argument for each monitor
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetededly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to monitor list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of monitors to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all monitors has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_monitor_list_foreach_delete_yielding(ErtsMonitor **list,
+ void (*func)(ErtsMonitor *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/*
+ * --- Misc monitor operations ---
+ */
+
+/**
+ *
+ * @brief Create a monitor
+ *
+ * Can create all types of monitors exept for suspend monitors
+ *
+ * When the funcion is called it is assumed that:
+ * - 'ref' is an internal ordinary reference if type is ERTS_MON_TYPE_PROC,
+ * ERTS_MON_TYPE_PORT, ERTS_MON_TYPE_TIME_OFFSET, or ERTS_MON_TYPE_RESOURCE
+ * - 'ref' is NIL if type is ERTS_MON_TYPE_NODE or ERTS_MON_TYPE_NODES
+ * - 'ref' is and ordinary internal reference or an external reference if
+ * type is ERTS_MON_TYPE_DIST_PROC
+ * - 'name' is an atom or NIL if type is ERTS_MON_TYPE_PROC,
+ * ERTS_MON_TYPE_PORT, or ERTS_MON_TYPE_DIST_PROC
+ * - 'name is NIL if type is ERTS_MON_TYPE_TIME_OFFSET, ERTS_MON_TYPE_RESOURCE,
+ * ERTS_MON_TYPE_NODE, or ERTS_MON_TYPE_NODES
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] type ERTS_MON_TYPE_PROC, ERTS_MON_TYPE_PORT,
+ * ERTS_MON_TYPE_TIME_OFFSET, ERTS_MON_TYPE_DIST_PROC,
+ * ERTS_MON_TYPE_RESOURCE, ERTS_MON_TYPE_NODE,
+ * or ERTS_MON_TYPE_NODES
+ *
+ * @param[in] ref A reference or NIL depending on type
+ *
+ * @param[in] origin The key of the origin
+ *
+ * @param[in] target The key of the target
+ *
+ */
+ErtsMonitorData *erts_monitor_create(Uint16 type, Eterm ref, Eterm origin,
+ Eterm target, Eterm name);
+
+/**
+ *
+ * @brief Get pointer to monitor data structure
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ * @returns Pointer to monitor data structure
+ *
+ */
+ERTS_GLB_INLINE ErtsMonitorData *erts_monitor_to_data(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Check if monitor is a target monitor
+ *
+ * @param[in] mon Pointer to monitor to check
+ *
+ * @returns A non-zero value if target monitor;
+ * otherwise zero
+ *
+ */
+ERTS_GLB_INLINE int erts_monitor_is_target(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Check if monitor is an origin monitor
+ *
+ * @param[in] mon Pointer to monitor to check
+ *
+ * @returns A non-zero value if origin monitor;
+ * otherwise zero
+ *
+ */
+ERTS_GLB_INLINE int erts_monitor_is_origin(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Check if monitor is in tree or list
+ *
+ * @param[in] mon Pointer to monitor to check
+ *
+ * @returns A non-zero value if in tree or list;
+ * otherwise zero
+ *
+ */
+ERTS_GLB_INLINE int erts_monitor_is_in_table(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Release monitor
+ *
+ * When both the origin and the target part of the monitor have
+ * been released the monitor structure will be deallocated.
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is not part of any list or tree
+ * - 'mon' is not referred to by any other structures
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ */
+ERTS_GLB_INLINE void erts_monitor_release(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Release both target and origin monitor structures simultaneously
+ *
+ * Release both the origin and target parts of the monitor
+ * simultaneously and deallocate the structure.
+ *
+ * When the funcion is called it is assumed that:
+ * - Neither the origin part nor the target part of the monitor
+ * are not part of any list or tree
+ * - Neither the origin part nor the target part of the monitor
+ * are referred to by any other structures
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] mdp Pointer to monitor data structure
+ *
+ */
+ERTS_GLB_INLINE void erts_monitor_release_both(ErtsMonitorData *mdp);
+
+/**
+ *
+ * @brief Insert monitor in dist monitor tree or list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor is not part of any list or tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ * @param[in] dist Pointer to dist structure
+ *
+ * @returns A non-zero value if inserted;
+ * otherwise, zero. The monitor
+ * is not inserted if the dist
+ * structure has been set in a
+ * dead state.
+ *
+ */
+ERTS_GLB_INLINE int erts_monitor_dist_insert(ErtsMonitor *mon, ErtsMonLnkDist *dist);
+
+/**
+ *
+ * @brief Delete monitor from dist monitor tree or list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' monitor earler has been inserted into 'dist'
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ * @param[in] dist Pointer to dist structure
+ *
+ * @returns A non-zero value if deleted;
+ * otherwise, zero. The monitor
+ * is not deleted if the dist
+ * structure has been set in a
+ * dead state or if it has already
+ * been deleted.
+ *
+ */
+ERTS_GLB_INLINE int erts_monitor_dist_delete(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Set dead dist structure on monitor
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ * @param[in] nodename Name of remote node
+ *
+ */
+void
+erts_monitor_set_dead_dist(ErtsMonitor *mon, Eterm nodename);
+
+/**
+ *
+ * @brief Get charged size of monitor
+ *
+ * If the other side of the monitor has been released, the
+ * whole size of the monitor data structure is returned; otherwise,
+ * half of the size is returned.
+ *
+ * When the funcion is called it is assumed that:
+ * - 'mon' has not been released
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] mon Pointer to monitor
+ *
+ * @returns Charged size in bytes
+ *
+ */
+Uint erts_monitor_size(ErtsMonitor *mon);
+
+
+/* internal function... */
+void erts_monitor_destroy__(ErtsMonitorData *mdp);
+
+/* implementations for globally inlined monitor functions... */
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE int
+erts_monitor_is_target(ErtsMonitor *mon)
+{
+ return !!(mon->flags & ERTS_ML_FLG_TARGET);
+}
+
+ERTS_GLB_INLINE int
+erts_monitor_is_origin(ErtsMonitor *mon)
+{
+ return !(mon->flags & ERTS_ML_FLG_TARGET);
+}
+
+ERTS_GLB_INLINE int
+erts_monitor_is_in_table(ErtsMonitor *mon)
+{
+ return !!(mon->flags & ERTS_ML_FLG_IN_TABLE);
+}
+
+ERTS_GLB_INLINE void
+erts_monitor_list_insert(ErtsMonitor **list, ErtsMonitor *mon)
+{
+ erts_ml_dl_list_insert__((ErtsMonLnkNode **) list, (ErtsMonLnkNode *) mon);
+}
+
+ERTS_GLB_INLINE void
+erts_monitor_list_delete(ErtsMonitor **list, ErtsMonitor *mon)
+{
+ erts_ml_dl_list_delete__((ErtsMonLnkNode **) list, (ErtsMonLnkNode *) mon);
+}
+
+ERTS_GLB_INLINE ErtsMonitor *
+erts_monitor_list_first(ErtsMonitor *list)
+{
+ return (ErtsMonitor *) erts_ml_dl_list_first__((ErtsMonLnkNode *) list);
+}
+
+ERTS_GLB_INLINE ErtsMonitor *
+erts_monitor_list_last(ErtsMonitor *list)
+{
+ return (ErtsMonitor *) erts_ml_dl_list_last__((ErtsMonLnkNode *) list);
+}
+
+#ifdef ERTS_ML_DEBUG
+extern size_t erts_monitor_origin_offset;
+extern size_t erts_monitor_origin_key_offset;
+extern size_t erts_monitor_target_offset;
+extern size_t erts_monitor_target_key_offset;
+extern size_t erts_monitor_node_key_offset;
+#endif
+
+ERTS_GLB_INLINE ErtsMonitorData *
+erts_monitor_to_data(ErtsMonitor *mon)
+{
+ ErtsMonitorData *mdp = erts_ml_node_to_main_struct__((ErtsMonLnkNode *) mon);
+
+#ifdef ERTS_ML_DEBUG
+ ERTS_ML_ASSERT(!(mdp->origin.flags & ERTS_ML_FLG_TARGET));
+ ERTS_ML_ASSERT(erts_monitor_origin_offset == (size_t) mdp->origin.offset);
+ ERTS_ML_ASSERT(!!(mdp->target.flags & ERTS_ML_FLG_TARGET));
+ ERTS_ML_ASSERT(erts_monitor_target_offset == (size_t) mdp->target.offset);
+ if (mon->type == ERTS_MON_TYPE_NODE || mon->type == ERTS_MON_TYPE_NODES) {
+ ERTS_ML_ASSERT(erts_monitor_node_key_offset == (size_t) mdp->origin.key_offset);
+ ERTS_ML_ASSERT(erts_monitor_node_key_offset == (size_t) mdp->target.key_offset);
+ }
+ else {
+ ERTS_ML_ASSERT(erts_monitor_origin_key_offset == (size_t) mdp->origin.key_offset);
+ ERTS_ML_ASSERT(erts_monitor_target_key_offset == (size_t) mdp->target.key_offset);
+ }
+#endif
+
+ return mdp;
+}
+
+ERTS_GLB_INLINE void
+erts_monitor_release(ErtsMonitor *mon)
+{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ ERTS_ML_ASSERT(!(mon->flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&mdp->refc) > 0);
+
+ if (erts_atomic32_dec_read_nob(&mdp->refc) == 0)
+ erts_monitor_destroy__(mdp);
+}
+
+ERTS_GLB_INLINE void
+erts_monitor_release_both(ErtsMonitorData *mdp)
+{
+ ERTS_ML_ASSERT((mdp->origin.flags & ERTS_ML_FLGS_SAME)
+ == (mdp->target.flags & ERTS_ML_FLGS_SAME));
+ ERTS_ML_ASSERT(!(mdp->origin.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(!(mdp->target.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&mdp->refc) >= 2);
+
+ if (erts_atomic32_add_read_nob(&mdp->refc, (erts_aint32_t) -2) == 0)
+ erts_monitor_destroy__(mdp);
+}
+
+ERTS_GLB_INLINE int
+erts_monitor_dist_insert(ErtsMonitor *mon, ErtsMonLnkDist *dist)
+{
+ ErtsMonitorDataExtended *mdep;
+ int insert;
+
+ ERTS_ML_ASSERT(mon->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(mon->type == ERTS_MON_TYPE_DIST_PROC
+ || mon->type == ERTS_MON_TYPE_NODE);
+
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+
+ ERTS_ML_ASSERT(!mdep->dist);
+ ERTS_ML_ASSERT(dist);
+ mdep->dist = dist;
+
+ erts_mon_link_dist_inc_refc(dist);
+
+ erts_mtx_lock(&dist->mtx);
+
+ insert = dist->alive;
+ if (insert) {
+ if ((mon->flags & (ERTS_ML_FLG_NAME
+ | ERTS_ML_FLG_TARGET)) == ERTS_ML_FLG_NAME)
+ erts_monitor_tree_insert(&dist->orig_name_monitors, mon);
+ else
+ erts_monitor_list_insert(&dist->monitors, mon);
+ }
+
+ erts_mtx_unlock(&dist->mtx);
+
+ return insert;
+}
+
+ERTS_GLB_INLINE int
+erts_monitor_dist_delete(ErtsMonitor *mon)
+{
+ ErtsMonitorDataExtended *mdep;
+ ErtsMonLnkDist *dist;
+ Uint16 flags;
+ int delete;
+
+ ERTS_ML_ASSERT(mon->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(mon->type == ERTS_MON_TYPE_DIST_PROC
+ || mon->type == ERTS_MON_TYPE_NODE);
+
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+ dist = mdep->dist;
+ ERTS_ML_ASSERT(dist);
+
+ erts_mtx_lock(&dist->mtx);
+
+ flags = mon->flags;
+ delete = !!dist->alive & !!(flags & ERTS_ML_FLG_IN_TABLE);
+ if (delete) {
+ if ((flags & (ERTS_ML_FLG_NAME
+ | ERTS_ML_FLG_TARGET)) == ERTS_ML_FLG_NAME)
+ erts_monitor_tree_delete(&dist->orig_name_monitors, mon);
+ else
+ erts_monitor_list_delete(&dist->monitors, mon);
+ }
+
+ erts_mtx_unlock(&dist->mtx);
+
+ return delete;
+}
+
+
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
+/* suspend monitors... */
+ErtsMonitorSuspend *erts_monitor_suspend_create(Eterm pid);
+ErtsMonitorSuspend *erts_monitor_suspend_tree_lookup_create(ErtsMonitor **root,
+ int *created,
+ Eterm pid);
+void erts_monitor_suspend_destroy(ErtsMonitorSuspend *msp);
+
+ERTS_GLB_INLINE ErtsMonitorSuspend *erts_monitor_suspend(ErtsMonitor *mon);
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE ErtsMonitorSuspend *erts_monitor_suspend(ErtsMonitor *mon)
+{
+ ERTS_ML_ASSERT(!mon || mon->type == ERTS_MON_TYPE_SUSPEND);
+ return (ErtsMonitorSuspend *) mon;
+}
+
+#endif
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Link Operations *
+\* */
+
+typedef struct ErtsMonLnkNode__ ErtsLink;
+
+typedef struct {
+ ErtsLink a;
+ ErtsLink b;
+ erts_atomic32_t refc;
+} ErtsLinkData;
+
+typedef struct {
+ ErtsLinkData ld;
+ struct erl_off_heap_header *ohhp;
+ ErtsMonLnkDist *dist;
+ Eterm heap[1]; /* heap start... */
+} ErtsLinkDataExtended;
+
+/*
+ * --- Link tree operations ---
+ */
+
+/**
+ *
+ * @brief Lookup a link in a link tree
+ *
+ *
+ * @param[in] root Pointer to root of link tree
+ *
+ * @param[in] key Key of link to lookup
+ *
+ * @returns Pointer to a link with the
+ * key 'key', or NULL if no such
+ * link was found
+ *
+ */
+ErtsLink *erts_link_tree_lookup(ErtsLink *root, Eterm item);
+
+/**
+ *
+ * @brief Lookup or insert a link in a link tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is not part of any tree or list
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] lnk Link to insert if no link
+ * with the same key already exists
+ *
+ * @returns Pointer to a link with the
+ * key 'key'. If no link with the key
+ * 'key' was found and 'lnk' was inserted
+ * 'lnk' is returned.
+ *
+ */
+ErtsLink *erts_link_tree_lookup_insert(ErtsLink **root, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Lookup or create a link in a link tree.
+ *
+ * Looks up a link with the key 'other' in the link tree. If it is not
+ * found, creates and insert a link with the key 'other'.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[out] created Pointer to integer. The integer is set to
+ * a non-zero value if no link with key
+ * 'other' was found, and a new link
+ * was created. If a link was found, it
+ * is set to zero.
+ *
+ * @param[in] type Type of link
+ *
+ * @param[in] this Id of this entity
+ *
+ * @param[in] other Id of other entity
+ *
+ */
+ErtsLink *erts_link_tree_lookup_create(ErtsLink **root, int *created,
+ Uint16 type, Eterm this, Eterm other);
+
+/**
+ *
+ * @brief Insert a link in a link tree
+ *
+ * When the funcion is called it is assumed that:
+ * - no links with the same key that 'lnk' exist in the tree
+ * - 'lnk' is not part of any list of tree
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] lnk Link to insert.
+ *
+ */
+void erts_link_tree_insert(ErtsLink **root, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Replace a link in a link tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'old' link and 'new' link have exactly the same key
+ * - 'old' link is part of the tree
+ * - 'new' link is not part of any tree or list
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] old Link to remove from the tree
+ *
+ * @param[in] new Link to insert into the tree
+ *
+ */
+void erts_link_tree_replace(ErtsLink **root, ErtsLink *old, ErtsLink *new);
+
+/**
+ *
+ * @brief Replace a link in a link tree if key already exist based on adress
+ *
+ * Inserts the link 'lnk' in the tree if no link with the same key
+ * already exists in tree. If a link with the same key exists in
+ * the tree and 'lnk' has a lower address than the link in the
+ * tree, the existing link in the tree is replaced by 'lnk'.
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is not part of any tree or list
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] lnk Link to insert into the tree
+ *
+ * @returns A pointer to the link that is not part
+ * of the tree after this operation.
+ *
+ */
+ERTS_GLB_INLINE ErtsLink *erts_link_tree_insert_addr_replace(ErtsLink **root,
+ ErtsLink *lnk);
+
+/**
+ *
+ * @brief Delete a link from a link tree
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is part of the tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] lnk Link to remove from the tree
+ *
+ */
+void erts_link_tree_delete(ErtsLink **root, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Delete a link from a link tree based on key
+ *
+ * If link 'lnk' is in the tree, 'lnk' is deleted from the tree.
+ * If link 'lnk' is not in the tree, another link with the same
+ * key as 'lnk' is deleted from the tree if such a link exist.
+ *
+ * When the funcion is called it is assumed that:
+ * - if 'lnk' link is part of a tree or list, it is part of this tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] lnk Link to remove from the tree
+ *
+ * @returns A pointer to the link that was deleted
+ * from the tree, or NULL in case no link
+ * was deleted from the tree
+ *
+ */
+ERTS_GLB_INLINE ErtsLink *erts_link_tree_key_delete(ErtsLink **root, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Call a function for each link in a link tree
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * @param[in] root Pointer to root of link tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_link_tree_foreach(ErtsLink *root,
+ void (*func)(ErtsLink *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Call a function for each link in a link tree. Yield if lots
+ * of links exist.
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetedly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] root Pointer to root of link tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of links to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all links has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_link_tree_foreach_yielding(ErtsLink *root,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/**
+ *
+ * @brief Delete all links from a link tree and call a function for
+ * each link
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_link_tree_foreach_delete(ErtsLink **root,
+ void (*func)(ErtsLink *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Delete all links from a link tree and call a function for
+ * each link
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetededly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] root Pointer to pointer to root of link tree
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of links to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all links has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_link_tree_foreach_delete_yielding(ErtsLink **root,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/*
+ * --- Link list operations ---
+ */
+
+/**
+ *
+ * @brief Insert a link in a link list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is not part of any list or tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to link list
+ *
+ * @param[in] lnk Link to insert
+ *
+ */
+ERTS_GLB_INLINE void erts_link_list_insert(ErtsLink **list, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Delete a link from a link list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is part of the list
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to link list
+ *
+ * @param[in] lnk Link to remove from the list
+ *
+ */
+ERTS_GLB_INLINE void erts_link_list_delete(ErtsLink **list, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Get a pointer to first link in a link list
+ *
+ * The link will still remain in the list after the return
+ *
+ * @param[in] list Pointer to link list
+ *
+ * @returns Pointer to first link in list if
+ * list is not empty. If list is empty
+ * NULL is returned.
+ *
+ */
+ERTS_GLB_INLINE ErtsLink *erts_link_list_first(ErtsLink *list);
+
+/**
+ *
+ * @brief Get a pointer to last link in a link list
+ *
+ * The link will still remain in the list after the return
+ *
+ * @param[in] list Pointer to link list
+ *
+ * @returns Pointer to last link in list if
+ * list is not empty. If list is empty
+ * NULL is returned.
+ *
+ */
+ERTS_GLB_INLINE ErtsLink *erts_link_list_last(ErtsLink *list);
+
+/**
+ *
+ * @brief Call a function for each link in a link list
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'list'.
+ *
+ * @param[in] list Pointer to root of link list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_link_list_foreach(ErtsLink *list,
+ void (*func)(ErtsLink *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Call a function for each link in a link list. Yield
+ * if lots of links exist.
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetedly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first call
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] list Pointer to link list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of links to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all links has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_link_list_foreach_yielding(ErtsLink *list,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/**
+ *
+ * @brief Delete all links from a link list and call a function for
+ * each link
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * @param[in,out] list Pointer to pointer to link list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ */
+void erts_link_list_foreach_delete(ErtsLink **list,
+ void (*func)(ErtsLink *, void *),
+ void *arg);
+
+/**
+ *
+ * @brief Delete all links from a link list and call a function for
+ * each link
+ *
+ * The funcion 'func' will be called with a pointer to a link
+ * as first argument and 'arg' as second argument for each link
+ * in the tree referred to by 'root'.
+ *
+ * It is assumed that:
+ * - *yspp equals NULL on first call
+ * - this function is repetededly called with *yspp set
+ * as set when previous call returned until a non-zero
+ * value is returned.
+ * - no modifications are made on the tree between first
+ * and the call that returns a non-zero value
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in,out] list Pointer to pointer to link list
+ *
+ * @param[in] func Pointer to function to call
+ *
+ * @param[in] arg Argument to pass as second argument in
+ * calls to 'func'
+ *
+ * @param[in,out] vyspp Pointer to a pointer to an internal state
+ * used by this function. At initial call
+ * *yspp should be NULL. When done *yspp
+ * will be NULL.
+ *
+ * @param[in] limit Maximum amount of links to process
+ * before yielding.
+ *
+ * @returns A non-zero value when all links has been
+ * processed, and zero when more work is needed.
+ *
+ */
+int erts_link_list_foreach_delete_yielding(ErtsLink **list,
+ void (*func)(ErtsLink *, void *),
+ void *arg,
+ void **vyspp,
+ Sint limit);
+
+/*
+ * --- Misc link operations ---
+ */
+
+/**
+ *
+ * @brief Create a link
+ *
+ * Can create all types of links
+ *
+ * When the funcion is called it is assumed that:
+ * - 'ref' is an internal ordinary reference if type is ERTS_MON_TYPE_PROC,
+ * ERTS_MON_TYPE_PORT, ERTS_MON_TYPE_TIME_OFFSET, or ERTS_MON_TYPE_RESOURCE
+ * - 'ref' is NIL if type is ERTS_MON_TYPE_NODE or ERTS_MON_TYPE_NODES
+ * - 'ref' is and ordinary internal reference or an external reference if
+ * type is ERTS_MON_TYPE_DIST_PROC
+ * - 'name' is an atom or NIL if type is ERTS_MON_TYPE_PROC,
+ * ERTS_MON_TYPE_PORT, or ERTS_MON_TYPE_DIST_PROC
+ * - 'name is NIL if type is ERTS_MON_TYPE_TIME_OFFSET, ERTS_MON_TYPE_RESOURCE,
+ * ERTS_MON_TYPE_NODE, or ERTS_MON_TYPE_NODES
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] type ERTS_MON_TYPE_PROC, ERTS_MON_TYPE_PORT,
+ * ERTS_MON_TYPE_TIME_OFFSET, ERTS_MON_TYPE_DIST_PROC,
+ * ERTS_MON_TYPE_RESOURCE, ERTS_MON_TYPE_NODE,
+ * or ERTS_MON_TYPE_NODES
+ *
+ * @param[in] a The key of entity a. Link structure a will
+ * have field other.item set to 'b'.
+ *
+ * @param[in] b The key of entity b. Link structure b will
+ * have field other.item set to 'a'.
+ *
+ */
+ErtsLinkData *erts_link_create(Uint16 type, Eterm a, Eterm b);
+
+/**
+ *
+ * @brief Get pointer to link data structure
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @returns Pointer to link data structure
+ *
+ */
+ERTS_GLB_INLINE ErtsLinkData *erts_link_to_data(ErtsLink *lnk);
+
+/**
+ *
+ * @brief Get pointer to the other link structure part of the link
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @param[out] ldpp Pointer to pointer to link data structure,
+ * if a non-NULL value is passed in the call
+ *
+ * @returns Pointer to other link
+ *
+ */
+ERTS_GLB_INLINE ErtsLink *erts_link_to_other(ErtsLink *lnk, ErtsLinkData **ldpp);
+
+/**
+ *
+ * @brief Check if link is in tree or list
+ *
+ * @param[in] lnk Pointer to lnk to check
+ *
+ * @returns A non-zero value if in tree or list;
+ * otherwise zero
+ *
+ */
+ERTS_GLB_INLINE int erts_link_is_in_table(ErtsLink *lnk);
+
+/**
+ *
+ * @brief Release link
+ *
+ * When both link halves part of the link have been released the link
+ * structure will be deallocated.
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is not part of any list or tree
+ * - 'lnk' is not referred to by any other structures
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] lnk Pointer to link
+ *
+ */
+ERTS_GLB_INLINE void erts_link_release(ErtsLink *lnk);
+
+/**
+ *
+ * @brief Release both link halves of a link simultaneously
+ *
+ * Release both halves of a link simultaneously and deallocate
+ * the structure.
+ *
+ * When the funcion is called it is assumed that:
+ * - Neither of the parts of the link are part of any list or tree
+ * - Neither of the parts of the link or the link data structure
+ * are referred to by any other structures
+ * If the above are not true, bad things will happen.
+ *
+ * @param[in] mdp Pointer to link data structure
+ *
+ */
+ERTS_GLB_INLINE void erts_link_release_both(ErtsLinkData *ldp);
+
+/**
+ *
+ * @brief Insert link in dist link list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link is not part of any list or tree
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @param[in] dist Pointer to dist structure
+ *
+ * @returns A non-zero value if inserted;
+ * otherwise, zero. The link
+ * is not inserted if the dist
+ * structure has been set in a
+ * dead state.
+ *
+ */
+ERTS_GLB_INLINE int erts_link_dist_insert(ErtsLink *lnk, ErtsMonLnkDist *dist);
+
+/**
+ *
+ * @brief Delete link from dist link list
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' link earler has been inserted into 'dist'
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @param[in] dist Pointer to dist structure
+ *
+ * @returns A non-zero value if deleted;
+ * otherwise, zero. The link
+ * is not deleted if the dist
+ * structure has been set in a
+ * dead state or if it has already
+ * been deleted.
+ *
+ */
+ERTS_GLB_INLINE int erts_link_dist_delete(ErtsLink *lnk);
+
+/**
+ *
+ * @brief Set dead dist structure on link
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @param[in] nodename Name of remote node
+ *
+ */
+void
+erts_link_set_dead_dist(ErtsLink *lnk, Eterm nodename);
+
+/**
+ *
+ * @brief Get charged size of link
+ *
+ * If the other side of the link has been released, the
+ * whole size of the link data structure is returned; otherwise,
+ * half of the size is returned.
+ *
+ * When the funcion is called it is assumed that:
+ * - 'lnk' has not been released
+ * If the above is not true, bad things will happen.
+ *
+ * @param[in] lnk Pointer to link
+ *
+ * @returns Charged size in bytes
+ *
+ */
+Uint erts_link_size(ErtsLink *lnk);
+
+/* internal function... */
+void erts_link_destroy__(ErtsLinkData *ldp);
+
+/* implementations for globally inlined link functions... */
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+#ifdef ERTS_ML_DEBUG
+extern size_t erts_link_a_offset;
+extern size_t erts_link_b_offset;
+extern size_t erts_link_key_offset;
+#endif
+
+ERTS_GLB_INLINE ErtsLinkData *
+erts_link_to_data(ErtsLink *lnk)
+{
+ ErtsLinkData *ldp = erts_ml_node_to_main_struct__((ErtsMonLnkNode *) lnk);
+
+#ifdef ERTS_ML_DEBUG
+ ERTS_ML_ASSERT(erts_link_a_offset == (size_t) ldp->a.offset);
+ ERTS_ML_ASSERT(erts_link_key_offset == (size_t) ldp->a.key_offset);
+ ERTS_ML_ASSERT(erts_link_b_offset == (size_t) ldp->b.offset);
+ ERTS_ML_ASSERT(erts_link_key_offset == (size_t) ldp->b.key_offset);
+#endif
+
+ return ldp;
+}
+
+ERTS_GLB_INLINE ErtsLink *
+erts_link_to_other(ErtsLink *lnk, ErtsLinkData **ldpp)
+{
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+ if (ldpp)
+ *ldpp = ldp;
+ return lnk == &ldp->a ? &ldp->b : &ldp->a;
+}
+
+ERTS_GLB_INLINE int
+erts_link_is_in_table(ErtsLink *lnk)
+{
+ return !!(lnk->flags & ERTS_ML_FLG_IN_TABLE);
+}
+
+ERTS_GLB_INLINE void
+erts_link_list_insert(ErtsLink **list, ErtsLink *lnk)
+{
+ erts_ml_dl_list_insert__((ErtsMonLnkNode **) list, (ErtsMonLnkNode *) lnk);
+}
+
+ERTS_GLB_INLINE void
+erts_link_list_delete(ErtsLink **list, ErtsLink *lnk)
+{
+ erts_ml_dl_list_delete__((ErtsMonLnkNode **) list, (ErtsMonLnkNode *) lnk);
+}
+
+ERTS_GLB_INLINE ErtsLink *
+erts_link_list_first(ErtsLink *list)
+{
+ return (ErtsLink *) erts_ml_dl_list_first__((ErtsMonLnkNode *) list);
+}
+
+ERTS_GLB_INLINE ErtsLink *
+erts_link_list_last(ErtsLink *list)
+{
+ return (ErtsLink *) erts_ml_dl_list_last__((ErtsMonLnkNode *) list);
+}
+
+ERTS_GLB_INLINE void
+erts_link_release(ErtsLink *lnk)
+{
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+ ERTS_ML_ASSERT(!(lnk->flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&ldp->refc) > 0);
+ if (erts_atomic32_dec_read_nob(&ldp->refc) == 0)
+ erts_link_destroy__(ldp);
+}
+
+ERTS_GLB_INLINE void
+erts_link_release_both(ErtsLinkData *ldp)
+{
+ ERTS_ML_ASSERT(!(ldp->a.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(!(ldp->b.flags & ERTS_ML_FLG_IN_TABLE));
+ ERTS_ML_ASSERT(erts_atomic32_read_nob(&ldp->refc) >= 2);
+ if (erts_atomic32_add_read_nob(&ldp->refc, (erts_aint32_t) -2) == 0)
+ erts_link_destroy__(ldp);
+}
+
+ERTS_GLB_INLINE ErtsLink *
+erts_link_tree_insert_addr_replace(ErtsLink **root, ErtsLink *lnk)
+{
+ ErtsLink *lnk2 = erts_link_tree_lookup_insert(root, lnk);
+ if (!lnk2)
+ return NULL;
+ if (lnk2 < lnk)
+ return lnk;
+ erts_link_tree_replace(root, lnk2, lnk);
+ return lnk2;
+}
+
+ERTS_GLB_INLINE ErtsLink *
+erts_link_tree_key_delete(ErtsLink **root, ErtsLink *lnk)
+{
+ ErtsLink *dlnk;
+ if (erts_link_is_in_table(lnk))
+ dlnk = lnk;
+ else
+ dlnk = erts_link_tree_lookup(*root, lnk->other.item);
+ if (dlnk)
+ erts_link_tree_delete(root, dlnk);
+ return dlnk;
+}
+
+ERTS_GLB_INLINE int
+erts_link_dist_insert(ErtsLink *lnk, ErtsMonLnkDist *dist)
+{
+ ErtsLinkDataExtended *ldep;
+ int insert;
+
+ ERTS_ML_ASSERT(lnk->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(lnk->type == ERTS_LNK_TYPE_DIST_PROC);
+
+ ldep = (ErtsLinkDataExtended *) erts_link_to_data(lnk);
+
+ ERTS_ML_ASSERT(!ldep->dist);
+ ERTS_ML_ASSERT(dist);
+ ldep->dist = dist;
+
+ erts_mon_link_dist_inc_refc(dist);
+
+ erts_mtx_lock(&dist->mtx);
+
+ insert = dist->alive;
+ if (insert)
+ erts_link_list_insert(&dist->links, lnk);
+
+ erts_mtx_unlock(&dist->mtx);
+
+ return insert;
+}
+
+ERTS_GLB_INLINE int
+erts_link_dist_delete(ErtsLink *lnk)
+{
+ ErtsLinkDataExtended *ldep;
+ ErtsMonLnkDist *dist;
+ int delete;
+
+ ERTS_ML_ASSERT(lnk->flags & ERTS_ML_FLG_EXTENDED);
+ ERTS_ML_ASSERT(lnk->type == ERTS_LNK_TYPE_DIST_PROC);
+
+ ldep = (ErtsLinkDataExtended *) erts_link_to_data(lnk);
+ dist = ldep->dist;
+ if (!dist)
+ return -1;
+
+ erts_mtx_lock(&dist->mtx);
+
+ delete = !!dist->alive & !!(lnk->flags & ERTS_ML_FLG_IN_TABLE);
+ if (delete)
+ erts_link_list_delete(&dist->links, lnk);
+
+ erts_mtx_unlock(&dist->mtx);
+
+ return delete;
+}
+
+
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
+#endif /* ERL_MONITOR_LINK_H__ */
diff --git a/erts/emulator/beam/erl_monitors.c b/erts/emulator/beam/erl_monitors.c
deleted file mode 100644
index 1c840d89f6..0000000000
--- a/erts/emulator/beam/erl_monitors.c
+++ /dev/null
@@ -1,1073 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2004-2017. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-/**************************************************************************
- * Monitors and links data structure manipulation.
- * Monitors and links are organized as AVL trees with the reference as
- * key in the monitor case and the pid of the linked process as key in the
- * link case. Lookups the order of the references is somewhat special. Local
- * references are strictly smaller than remote references and are sorted
- * by inlined comparison functionality. Remote references are handled by the
- * usual cmp function.
- * Each Monitor is tagged with different tags depending on which end of the
- * monitor it is.
- * A monitor is removed either explicitly by reference or all monitors are
- * removed when the process exits. No need to access the monitor by pid.
- **************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "sys.h"
-#include "erl_vm.h"
-#include "global.h"
-#include "erl_process.h"
-#include "error.h"
-#include "erl_db.h"
-#include "bif.h"
-#include "big.h"
-#include "erl_monitors.h"
-#include "erl_bif_unique.h"
-
-#define STACK_NEED 50
-#define MAX_MONITORS 0xFFFFFFFFUL
-
-#define DIR_LEFT 0
-#define DIR_RIGHT 1
-#define DIR_END 2
-
-static erts_atomic_t tot_link_lh_size;
-
-/* Implements the sort order in monitor trees, which is different from
- the ordinary term order.
- No short local ref's should ever exist (the ref is created by the bif's
- in runtime), therefore:
- All local ref's are less than external ref's
- Local ref's are inline-compared,
- External ref's are compared by cmp */
-
-#if 0
-#define CMP_MON_REF(Ref1,Ref2) \
-cmp((Ref1),(Ref2)) /* XXX, the inline comparision yet to be done */
-#else
-#define CMP_MON_REF(Ref1,Ref2) cmp_mon_ref((Ref1),(Ref2))
-#endif
-
-static ERTS_INLINE int cmp_mon_ref(Eterm ref1, Eterm ref2)
-{
- Eterm *b1, *b2;
-
-
- b1 = boxed_val(ref1);
- b2 = boxed_val(ref2);
- if (is_ref_thing_header(*b1)) {
- if (is_ref_thing_header(*b2)) {
- Uint32 *num1, *num2;
- if (is_ordinary_ref_thing(b1)) {
- ErtsORefThing *rtp = (ErtsORefThing *) b1;
- num1 = rtp->num;
- }
- else {
- ErtsMRefThing *mrtp = (ErtsMRefThing *) b1;
- num1 = mrtp->mb->refn;
- }
- if (is_ordinary_ref_thing(b2)) {
- ErtsORefThing *rtp = (ErtsORefThing *) b2;
- num2 = rtp->num;
- }
- else {
- ErtsMRefThing *mrtp = (ErtsMRefThing *) b2;
- num2 = mrtp->mb->refn;
- }
- return erts_internal_ref_number_cmp(num1, num2);
- }
- return -1;
- }
- if (is_ref_thing_header(*b2)) {
- return 1;
- }
- return CMP(ref1,ref2);
-}
-
-#define CP_LINK_VAL(To, Hp, From) \
-do { \
- if (is_immed(From)) \
- (To) = (From); \
- else { \
- Uint i__; \
- Uint len__; \
- ASSERT((Hp)); \
- ASSERT(is_internal_ordinary_ref((From)) \
- || is_external((From))); \
- (To) = make_boxed((Hp)); \
- len__ = thing_arityval(*boxed_val((From))) + 1; \
- for(i__ = 0; i__ < len__; i__++) \
- (*((Hp)++)) = boxed_val((From))[i__]; \
- if (is_external((To))) { \
- external_thing_ptr((To))->next = NULL; \
- erts_refc_inc(&(external_thing_ptr((To))->node->refc), 2);\
- } \
- } \
-} while (0)
-
-static ErtsMonitor *create_monitor(Uint type, Eterm ref, UWord entity, Eterm name)
-{
- Uint mon_size = ERTS_MONITOR_SIZE;
- ErtsMonitor *n;
- Eterm *hp;
-
- mon_size += NC_HEAP_SIZE(ref);
- if (type != MON_NIF_TARGET && is_not_immed(entity)) {
- mon_size += NC_HEAP_SIZE(entity);
- }
-
- if (mon_size <= ERTS_MONITOR_SH_SIZE) {
- n = (ErtsMonitor *) erts_alloc(ERTS_ALC_T_MONITOR_SH,
- mon_size*sizeof(Uint));
- } else {
- n = (ErtsMonitor *) erts_alloc(ERTS_ALC_T_MONITOR_LH,
- mon_size*sizeof(Uint));
- erts_atomic_add_nob(&tot_link_lh_size, mon_size*sizeof(Uint));
- }
- hp = n->heap;
-
-
- n->left = n->right = NULL; /* Always the same initial value*/
- n->type = (Uint16) type;
- n->balance = 0; /* Always the same initial value */
- n->name = name; /* atom() or [] */
- CP_LINK_VAL(n->ref, hp, ref); /*XXX Unnecessary check, never immediate*/
- if (type == MON_NIF_TARGET)
- n->u.resource = (ErtsResource*)entity;
- else
- CP_LINK_VAL(n->u.pid, hp, (Eterm)entity);
-
- return n;
-}
-
-static ErtsLink *create_link(Uint type, Eterm pid)
-{
- Uint lnk_size = ERTS_LINK_SIZE;
- ErtsLink *n;
- Eterm *hp;
-
- if (is_not_immed(pid)) {
- lnk_size += NC_HEAP_SIZE(pid);
- }
-
- if (lnk_size <= ERTS_LINK_SH_SIZE) {
- n = (ErtsLink *) erts_alloc(ERTS_ALC_T_NLINK_SH,
- lnk_size*sizeof(Uint));
- } else {
- n = (ErtsLink *) erts_alloc(ERTS_ALC_T_NLINK_LH,
- lnk_size*sizeof(Uint));
- erts_atomic_add_nob(&tot_link_lh_size, lnk_size*sizeof(Uint));
- }
- hp = n->heap;
-
-
- n->left = n->right = NULL; /* Always the same initial value*/
- n->type = (Uint16) type;
- n->balance = 0; /* Always the same initial value */
- if (n->type == LINK_NODE) {
- ERTS_LINK_REFC(n) = 0;
- } else {
- ERTS_LINK_ROOT(n) = NULL;
- }
- CP_LINK_VAL(n->pid, hp, pid);
-
- return n;
-}
-
-#undef CP_LINK_VAL
-
-static ErtsSuspendMonitor *create_suspend_monitor(Eterm pid)
-{
- ErtsSuspendMonitor *smon = erts_alloc(ERTS_ALC_T_SUSPEND_MON,
- sizeof(ErtsSuspendMonitor));
- smon->left = smon->right = NULL; /* Always the same initial value */
- smon->balance = 0; /* Always the same initial value */
- smon->pending = 0;
- smon->active = 0;
- smon->pid = pid;
- return smon;
-}
-
-void
-erts_init_monitors(void)
-{
- erts_atomic_init_nob(&tot_link_lh_size, 0);
-}
-
-Uint
-erts_tot_link_lh_size(void)
-{
- return (Uint) erts_atomic_read_nob(&tot_link_lh_size);
-}
-
-void erts_destroy_monitor(ErtsMonitor *mon)
-{
- Uint mon_size = ERTS_MONITOR_SIZE;
- ErlNode *node;
-
- ASSERT(is_not_immed(mon->ref));
- mon_size += NC_HEAP_SIZE(mon->ref);
- if (is_external(mon->ref)) {
- node = external_thing_ptr(mon->ref)->node;
- erts_deref_node_entry(node);
- }
- if (mon->type != MON_NIF_TARGET && is_not_immed(mon->u.pid)) {
- mon_size += NC_HEAP_SIZE(mon->u.pid);
- if (is_external(mon->u.pid)) {
- node = external_thing_ptr(mon->u.pid)->node;
- erts_deref_node_entry(node);
- }
- }
- if (mon_size <= ERTS_MONITOR_SH_SIZE) {
- erts_free(ERTS_ALC_T_MONITOR_SH, (void *) mon);
- } else {
- erts_free(ERTS_ALC_T_MONITOR_LH, (void *) mon);
- erts_atomic_add_nob(&tot_link_lh_size, -1*mon_size*sizeof(Uint));
- }
-}
-
-void erts_destroy_link(ErtsLink *lnk)
-{
- Uint lnk_size = ERTS_LINK_SIZE;
- ErlNode *node;
-
- ASSERT(lnk->type == LINK_NODE || ERTS_LINK_ROOT(lnk) == NULL);
-
- if (is_not_immed(lnk->pid)) {
- lnk_size += NC_HEAP_SIZE(lnk->pid);
- if (is_external(lnk->pid)) {
- node = external_thing_ptr(lnk->pid)->node;
- erts_deref_node_entry(node);
- }
- }
- if (lnk_size <= ERTS_LINK_SH_SIZE) {
- erts_free(ERTS_ALC_T_NLINK_SH, (void *) lnk);
- } else {
- erts_free(ERTS_ALC_T_NLINK_LH, (void *) lnk);
- erts_atomic_add_nob(&tot_link_lh_size, -1*lnk_size*sizeof(Uint));
- }
-}
-
-void erts_destroy_suspend_monitor(ErtsSuspendMonitor *smon)
-{
- erts_free(ERTS_ALC_T_SUSPEND_MON, smon);
-}
-
-static void insertion_rotation(int dstack[], int dpos,
- void *tstack[], int tpos,
- int state) {
-
- ErtsMonitorOrLink **this;
- ErtsMonitorOrLink *p1, *p2, *p;
- int dir;
-
- while (state && ( dir = dstack[--dpos] ) != DIR_END) {
- this = tstack[--tpos];
- p = *this;
- if (dir == DIR_LEFT) {
- switch (p->balance) {
- case 1:
- p->balance = 0;
- state = 0;
- break;
- case 0:
- p->balance = -1;
- break;
- case -1: /* The icky case */
- p1 = p->left;
- if (p1->balance == -1) { /* Single LL rotation */
- p->left = p1->right;
- p1->right = p;
- p->balance = 0;
- (*this) = p1;
- } else { /* Double RR rotation */
- p2 = p1->right;
- p1->right = p2->left;
- p2->left = p1;
- p->left = p2->right;
- p2->right = p;
- p->balance = (p2->balance == -1) ? +1 : 0;
- p1->balance = (p2->balance == 1) ? -1 : 0;
- (*this) = p2;
- }
- (*this)->balance = 0;
- state = 0;
- break;
- }
- } else { /* dir == DIR_RIGHT */
- switch (p->balance) {
- case -1:
- p->balance = 0;
- state = 0;
- break;
- case 0:
- p->balance = 1;
- break;
- case 1:
- p1 = p->right;
- if (p1->balance == 1) { /* Single RR rotation */
- p->right = p1->left;
- p1->left = p;
- p->balance = 0;
- (*this) = p1;
- } else { /* Double RL rotation */
- p2 = p1->left;
- p1->left = p2->right;
- p2->right = p1;
- p->right = p2->left;
- p2->left = p;
- p->balance = (p2->balance == 1) ? -1 : 0;
- p1->balance = (p2->balance == -1) ? 1 : 0;
- (*this) = p2;
- }
- (*this)->balance = 0;
- state = 0;
- break;
- }
- }
- }
-}
-
-void erts_add_monitor(ErtsMonitor **root, Uint type, Eterm ref, UWord entity,
- Eterm name)
-{
- void *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsMonitor **this = root;
- Sint c;
-
- ASSERT(is_internal_ordinary_ref(ref) || is_external_ref(ref));
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Found our place */
- state = 1;
- *this = create_monitor(type,ref,entity,name);
- break;
- } else if ((c = CMP_MON_REF(ref,(*this)->ref)) < 0) {
- /* go left */
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key is an error for monitors */
- erts_exit(ERTS_ERROR_EXIT,"Insertion of already present monitor!");
- break;
- }
- }
- insertion_rotation(dstack, dpos, tstack, tpos, state);
-}
-
-
-/* Returns 0 if OK, < 0 if already present */
-int erts_add_link(ErtsLink **root, Uint type, Eterm pid)
-{
- void *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsLink **this = root;
- Sint c;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Found our place */
- state = 1;
- *this = create_link(type,pid);
- break;
- } else if ((c = CMP(pid,(*this)->pid)) < 0) {
- /* go left */
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key is an error for monitors */
- return -1;
- }
- }
- insertion_rotation(dstack, dpos, tstack, tpos, state);
- return 0;
-}
-
-ErtsSuspendMonitor *
-erts_add_or_lookup_suspend_monitor(ErtsSuspendMonitor **root, Eterm pid)
-{
- void *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsSuspendMonitor **this = root;
- ErtsSuspendMonitor *res;
- Sint c;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Found our place */
- state = 1;
- res = *this = create_suspend_monitor(pid);
- break;
- } else if ((c = CMP(pid,(*this)->pid)) < 0) {
- /* go left */
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Already here... */
- ASSERT((*this)->pid == pid);
- return *this;
- }
- }
- insertion_rotation(dstack, dpos, tstack, tpos, state);
- return res;
-}
-
-
-/* Returns the new or old link structure */
-ErtsLink *erts_add_or_lookup_link(ErtsLink **root, Uint type, Eterm pid)
-{
- void *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsLink **this = root;
- Sint c;
- ErtsLink *ret = NULL;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Found our place */
- state = 1;
- *this = create_link(type,pid);
- ret = *this;
- break;
- } else if ((c = CMP(pid,(*this)->pid)) < 0) {
- /* go left */
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key is an error for monitors */
- return *this;
- }
- }
- insertion_rotation(dstack, dpos, tstack, tpos, state);
- return ret;
-}
-
-
-/*
- * Deletion helpers
- */
-static int balance_left(ErtsMonitorOrLink **this)
-{
- ErtsMonitorOrLink *p, *p1, *p2;
- int b1, b2, h = 1;
-
- p = *this;
- switch (p->balance) {
- case -1:
- p->balance = 0;
- break;
- case 0:
- p->balance = 1;
- h = 0;
- break;
- case 1:
- p1 = p->right;
- b1 = p1->balance;
- if (b1 >= 0) { /* Single RR rotation */
- p->right = p1->left;
- p1->left = p;
- if (b1 == 0) {
- p->balance = 1;
- p1->balance = -1;
- h = 0;
- } else {
- p->balance = p1->balance = 0;
- }
- (*this) = p1;
- } else { /* Double RL rotation */
- p2 = p1->left;
- b2 = p2->balance;
- p1->left = p2->right;
- p2->right = p1;
- p->right = p2->left;
- p2->left = p;
- p->balance = (b2 == 1) ? -1 : 0;
- p1->balance = (b2 == -1) ? 1 : 0;
- p2->balance = 0;
- (*this) = p2;
- }
- break;
- }
- return h;
-}
-
-static int balance_right(ErtsMonitorOrLink **this)
-{
- ErtsMonitorOrLink *p, *p1, *p2;
- int b1, b2, h = 1;
-
- p = *this;
- switch (p->balance) {
- case 1:
- p->balance = 0;
- break;
- case 0:
- p->balance = -1;
- h = 0;
- break;
- case -1:
- p1 = p->left;
- b1 = p1->balance;
- if (b1 <= 0) { /* Single LL rotation */
- p->left = p1->right;
- p1->right = p;
- if (b1 == 0) {
- p->balance = -1;
- p1->balance = 1;
- h = 0;
- } else {
- p->balance = p1->balance = 0;
- }
- (*this) = p1;
- } else { /* Double LR rotation */
- p2 = p1->right;
- b2 = p2->balance;
- p1->right = p2->left;
- p2->left = p1;
- p->left = p2->right;
- p2->right = p;
- p->balance = (b2 == -1) ? 1 : 0;
- p1->balance = (b2 == 1) ? -1 : 0;
- p2->balance = 0;
- (*this) = p2;
- }
- }
- return h;
-}
-
-static int delsub(ErtsMonitorOrLink **this)
-{
- ErtsMonitorOrLink **tstack[STACK_NEED];
- int tpos = 0;
- ErtsMonitorOrLink *q = (*this);
- ErtsMonitorOrLink **r = &(q->left);
- int h;
-
- /*
- * Walk down the tree to the right and search
- * for a void right child, pick that child out
- * and return it to be put in the deleted
- * object's place.
- */
-
- while ((*r)->right != NULL) {
- tstack[tpos++] = r;
- r = &((*r)->right);
- }
- *this = *r;
- *r = (*r)->left;
- (*this)->left = q->left;
- (*this)->right = q->right;
- (*this)->balance = q->balance;
- tstack[0] = &((*this)->left);
- h = 1;
- while (tpos && h) {
- r = tstack[--tpos];
- h = balance_right(r);
- }
- return h;
-}
-
-ErtsMonitor *erts_remove_monitor(ErtsMonitor **root, Eterm ref)
-{
- ErtsMonitor **tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsMonitor **this = root;
- Sint c;
- int dir;
- ErtsMonitor *q = NULL;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Failure */
- return NULL;
- } else if ((c = CMP_MON_REF(ref,(*this)->ref)) < 0) {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key, found the one to delete */
- q = (*this);
- if (q->right == NULL) {
- (*this) = q->left;
- state = 1;
- } else if (q->left == NULL) {
- (*this) = q->right;
- state = 1;
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- state = delsub((ErtsMonitorOrLink **) this);
- }
- break;
- }
- }
- while (state && ( dir = dstack[--dpos] ) != DIR_END) {
- this = tstack[--tpos];
- if (dir == DIR_LEFT) {
- state = balance_left((ErtsMonitorOrLink **) this);
- } else {
- state = balance_right((ErtsMonitorOrLink **) this);
- }
- }
- return q;
-}
-
-ErtsLink *erts_remove_link(ErtsLink **root, Eterm pid)
-{
- ErtsLink **tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsLink **this = root;
- Sint c;
- int dir;
- ErtsLink *q = NULL;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Failure */
- return NULL;
- } else if ((c = CMP(pid,(*this)->pid)) < 0) {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key, found the one to delete */
- q = (*this);
- if (q->right == NULL) {
- (*this) = q->left;
- state = 1;
- } else if (q->left == NULL) {
- (*this) = q->right;
- state = 1;
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- state = delsub((ErtsMonitorOrLink **) this);
- }
- break;
- }
- }
- while (state && ( dir = dstack[--dpos] ) != DIR_END) {
- this = tstack[--tpos];
- if (dir == DIR_LEFT) {
- state = balance_left((ErtsMonitorOrLink **) this);
- } else {
- state = balance_right((ErtsMonitorOrLink **) this);
- }
- }
- return q;
-}
-
-void
-erts_delete_suspend_monitor(ErtsSuspendMonitor **root, Eterm pid)
-{
- ErtsSuspendMonitor **tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int state = 0;
- ErtsSuspendMonitor **this = root;
- Sint c;
- int dir;
- ErtsSuspendMonitor *q = NULL;
-
- dstack[0] = DIR_END;
- for (;;) {
- if (!*this) { /* Nothing found */
- return;
- } else if ((c = CMP(pid,(*this)->pid)) < 0) {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- this = &((*this)->left);
- } else if (c > 0) { /* go right */
- dstack[dpos++] = DIR_RIGHT;
- tstack[tpos++] = this;
- this = &((*this)->right);
- } else { /* Equal key, found the one to delete */
- q = (*this);
- ASSERT(q->pid == pid);
- if (q->right == NULL) {
- (*this) = q->left;
- state = 1;
- } else if (q->left == NULL) {
- (*this) = q->right;
- state = 1;
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = this;
- state = delsub((ErtsMonitorOrLink **) this);
- }
- erts_destroy_suspend_monitor(q);
- break;
- }
- }
- while (state && ( dir = dstack[--dpos] ) != DIR_END) {
- this = tstack[--tpos];
- if (dir == DIR_LEFT) {
- state = balance_left((ErtsMonitorOrLink **) this);
- } else {
- state = balance_right((ErtsMonitorOrLink **) this);
- }
- }
-}
-
-ErtsMonitor *erts_lookup_monitor(ErtsMonitor *root, Eterm ref)
-{
- Sint c;
-
- for (;;) {
- if (root == NULL || (c = CMP_MON_REF(ref,root->ref)) == 0) {
- return root;
- } else if (c < 0) {
- root = root->left;
- } else { /* c > 0 */
- root = root->right;
- }
- }
-}
-
-ErtsLink *erts_lookup_link(ErtsLink *root, Eterm pid)
-{
- Sint c;
-
- for (;;) {
- if (root == NULL || (c = CMP(pid,root->pid)) == 0) {
- return root;
- } else if (c < 0) {
- root = root->left;
- } else { /* c > 0 */
- root = root->right;
- }
- }
-}
-
-ErtsSuspendMonitor *
-erts_lookup_suspend_monitor(ErtsSuspendMonitor *root, Eterm pid)
-{
- Sint c;
-
- for (;;) {
- if (root == NULL || (c = CMP(pid,root->pid)) == 0) {
- return root;
- } else if (c < 0) {
- root = root->left;
- } else { /* c > 0 */
- root = root->right;
- }
- }
-}
-
-void erts_sweep_monitors(ErtsMonitor *root,
- void (*doit)(ErtsMonitor *, void *),
- void *context)
-{
- ErtsMonitor *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int dir;
-
- dstack[0] = DIR_END;
-
- for (;;) {
- if (root == NULL) {
- if ((dir = dstack[dpos-1]) == DIR_END) {
- return;
- }
- if (dir == DIR_LEFT) {
- /* Still has DIR_RIGHT to do */
- dstack[dpos-1] = DIR_RIGHT;
- root = (tstack[tpos-1])->right;
- } else {
- /* stacktop is an object to be deleted */
- (*doit)(tstack[--tpos],context); /* expeted to do the
- deletion */
- --dpos;
- root = NULL;
- }
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = root;
- root = root->left;
- }
- }
-}
-
-void erts_sweep_links(ErtsLink *root,
- void (*doit)(ErtsLink *, void *),
- void *context)
-{
- ErtsLink *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int dir;
-
- dstack[0] = DIR_END;
-
- for (;;) {
- if (root == NULL) {
- if ((dir = dstack[dpos-1]) == DIR_END) {
- return;
- }
- if (dir == DIR_LEFT) {
- /* Still has DIR_RIGHT to do */
- dstack[dpos-1] = DIR_RIGHT;
- root = (tstack[tpos-1])->right;
- } else {
- /* stacktop is an object to be deleted */
- (*doit)(tstack[--tpos],context); /* expeted to do the
- deletion */
- --dpos;
- root = NULL;
- }
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = root;
- root = root->left;
- }
- }
-}
-
-void erts_sweep_suspend_monitors(ErtsSuspendMonitor *root,
- void (*doit)(ErtsSuspendMonitor *, void *),
- void *context)
-{
- ErtsSuspendMonitor *tstack[STACK_NEED];
- int tpos = 0;
- int dstack[STACK_NEED+1];
- int dpos = 1;
- int dir;
-
- dstack[0] = DIR_END;
-
- for (;;) {
- if (root == NULL) {
- if ((dir = dstack[dpos-1]) == DIR_END) {
- return;
- }
- if (dir == DIR_LEFT) {
- /* Still has DIR_RIGHT to do */
- dstack[dpos-1] = DIR_RIGHT;
- root = (tstack[tpos-1])->right;
- } else {
- /* stacktop is an object to be deleted */
- (*doit)(tstack[--tpos],context); /* expeted to do the
- deletion */
- --dpos;
- root = NULL;
- }
- } else {
- dstack[dpos++] = DIR_LEFT;
- tstack[tpos++] = root;
- root = root->left;
- }
- }
-}
-
-
-/* Debug BIF, always present, but undocumented... */
-
-static void erts_dump_monitors(ErtsMonitor *root, int indent)
-{
- if (root == NULL)
- return;
- erts_dump_monitors(root->right,indent+2);
- erts_printf("%*s[%b16d:%b16u:%T:%T", indent, "", root->balance,
- root->type, root->ref, root->name);
- if (root->type == MON_NIF_TARGET)
- erts_printf(":%p]\n", root->u.resource);
- else
- erts_printf(":%T]\n", root->u.pid);
- erts_dump_monitors(root->left,indent+2);
-}
-
-static void erts_dump_links_aux(ErtsLink *root, int indent,
- erts_dsprintf_buf_t *dsbufp)
-{
- if (root == NULL)
- return;
- erts_dump_links_aux(root->right, indent+2, dsbufp);
- dsbufp->str_len = 0;
- erts_dsprintf(dsbufp, "%*s[%b16d:%b16u:%T:%p]", indent, "",
- root->balance, root->type, root->pid, ERTS_LINK_ROOT(root));
- if (ERTS_LINK_ROOT(root) != NULL) {
- ErtsLink *sub = ERTS_LINK_ROOT(root);
- int len = dsbufp->str_len;
- erts_dump_links_aux(sub->right, indent+len+5, dsbufp);
- erts_dsprintf(dsbufp, "-> %*s[%b16d:%b16u:%T:%p]", indent, "",
- sub->balance, sub->type, sub->pid, ERTS_LINK_ROOT(sub));
- erts_printf("%s\n", dsbufp->str);
- erts_dump_links_aux(sub->left, indent+len+5, dsbufp);
- } else {
- erts_printf("%s\n", dsbufp->str);
- }
- erts_dump_links_aux(root->left, indent+2, dsbufp);
-}
-
-static void erts_dump_links(ErtsLink *root, int indent)
-{
- erts_dsprintf_buf_t *dsbufp = erts_create_tmp_dsbuf(0);
- erts_dump_links_aux(root, indent, dsbufp);
- erts_destroy_tmp_dsbuf(dsbufp);
-}
-
-Eterm erts_debug_dump_monitors_1(BIF_ALIST_1)
-{
- Process *p = BIF_P;
- Eterm pid = BIF_ARG_1;
- Process *rp;
- DistEntry *dep;
- rp = erts_pid2proc(p, ERTS_PROC_LOCK_MAIN, pid, ERTS_PROC_LOCK_LINK);
- if (!rp) {
- ERTS_ASSERT_IS_NOT_EXITING(p);
- if (is_atom(pid) && is_node_name_atom(pid) &&
- (dep = erts_find_dist_entry(pid)) != NULL) {
- erts_printf("Dumping dist monitors-------------------\n");
- erts_de_links_lock(dep);
- erts_dump_monitors(dep->monitors,0);
- erts_de_links_unlock(dep);
- erts_printf("Monitors dumped-------------------------\n");
- BIF_RET(am_true);
- } else {
- BIF_ERROR(p,BADARG);
- }
- } else {
- erts_printf("Dumping pid monitors--------------------\n");
- erts_dump_monitors(ERTS_P_MONITORS(rp),0);
- erts_printf("Monitors dumped-------------------------\n");
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- BIF_RET(am_true);
- }
-}
-
-Eterm erts_debug_dump_links_1(BIF_ALIST_1)
-{
- Process *p = BIF_P;
- Eterm pid = BIF_ARG_1;
- Process *rp;
- DistEntry *dep;
- if (is_internal_port(pid)) {
- Port *rport = erts_id2port_sflgs(pid,
- p,
- ERTS_PROC_LOCK_MAIN,
- ERTS_PORT_SFLGS_INVALID_LOOKUP);
- if (rport) {
- erts_printf("Dumping port links----------------------\n");
- erts_dump_links(ERTS_P_LINKS(rport), 0);
- erts_printf("Links dumped----------------------------\n");
- erts_port_release(rport);
- BIF_RET(am_true);
- } else {
- BIF_ERROR(p,BADARG);
- }
- } else {
- rp = erts_pid2proc(p, ERTS_PROC_LOCK_MAIN, pid, ERTS_PROC_LOCK_LINK);
- if (!rp) {
- ERTS_ASSERT_IS_NOT_EXITING(p);
- if (is_atom(pid) && is_node_name_atom(pid) &&
- (dep = erts_find_dist_entry(pid)) != NULL) {
- erts_printf("Dumping dist links----------------------\n");
- erts_de_links_lock(dep);
- erts_dump_links(dep->nlinks,0);
- erts_de_links_unlock(dep);
- erts_printf("Links dumped----------------------------\n");
- BIF_RET(am_true);
- } else {
- BIF_ERROR(p,BADARG);
- }
-
- } else {
- erts_printf("Dumping pid links-----------------------\n");
- erts_dump_links(ERTS_P_LINKS(rp), 0);
- erts_printf("Links dumped----------------------------\n");
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- BIF_RET(am_true);
- }
- }
-}
-
-void erts_one_link_size(ErtsLink *lnk, void *vpu)
-{
- Uint *pu = vpu;
- *pu += ERTS_LINK_SIZE*sizeof(Uint);
- if(is_not_immed(lnk->pid))
- *pu += NC_HEAP_SIZE(lnk->pid)*sizeof(Uint);
- if (lnk->type != LINK_NODE && ERTS_LINK_ROOT(lnk) != NULL) {
- erts_doforall_links(ERTS_LINK_ROOT(lnk),&erts_one_link_size,vpu);
- }
-}
-void erts_one_mon_size(ErtsMonitor *mon, void *vpu)
-{
- Uint *pu = vpu;
- *pu += ERTS_MONITOR_SIZE*sizeof(Uint);
- if(mon->type != MON_NIF_TARGET && is_not_immed(mon->u.pid))
- *pu += NC_HEAP_SIZE(mon->u.pid)*sizeof(Uint);
- if(is_not_immed(mon->ref))
- *pu += NC_HEAP_SIZE(mon->ref)*sizeof(Uint);
-}
diff --git a/erts/emulator/beam/erl_monitors.h b/erts/emulator/beam/erl_monitors.h
deleted file mode 100644
index 1cacecd7e9..0000000000
--- a/erts/emulator/beam/erl_monitors.h
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * %CopyrightBegin%
- *
- * Copyright Ericsson AB 2004-2017. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * %CopyrightEnd%
- */
-
-/**********************************************************************
- * Header for monitors and links data structures.
- * Monitors are kept in an AVL tree and the data structures for
- * the four different types of monitors are like this:
- **********************************************************************
- * Local monitor by pid/port:
- * (Ref is always same in all involved data structures)
- **********************************************************************
- * Process/Port X Process Y
- * +-------------+ +-------------+
- * Type: | MON_ORIGIN | | MON_TARGET |
- * +-------------+ +-------------+
- * Pid: | Pid(Y) | | Pid/Port(X) |
- * +-------------+ +-------------+
- * Name: | [] | | [] |
- * +-------------+ +-------------+
- **********************************************************************
- * Local monitor by name: (Ref is always same in all involved data structures)
- **********************************************************************
- * Process X Process Y (name foo)
- * +-------------+ +-------------+
- * Type: | MON_ORIGIN | | MON_TARGET |
- * +-------------+ +-------------+
- * Pid: | Pid(Y) | | Pid(X) |
- * +-------------+ +-------------+
- * Name: | Atom(foo) | | Atom(foo) |
- * +-------------+ +-------------+
- **********************************************************************
- * Remote monitor by pid: (Ref is always same in all involved data structures)
- **********************************************************************
- * Node A | Node B
- * ---------------------------------+----------------------------------
- * Process X (@A) Distentry @A Distentry @B Process Y (@B)
- * for node B for node A
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Type: | MON_ORIGIN | | MON_TARGET | | MON_ORIGIN | | MON_TARGET |
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Pid: | Pid(Y) | | Pid(X) | | Pid(Y) | | Pid(X) |
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Name: | [] | | [] | | [] | | [] |
- * +-------------+ +-------------+ +-------------+ +-------------+
- **********************************************************************
- * Remote monitor by name: (Ref is always same in all involved data structures)
- **********************************************************************
- * Node A | Node B
- * ---------------------------------+----------------------------------
- * Process X (@A) Distentry @A Distentry @B Process Y (@B)
- * for node B for node A (name foo)
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Type: | MON_ORIGIN | | MON_TARGET | | MON_ORIGIN | | MON_TARGET |
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Pid: | Atom(node B)| | Pid(X) | | Pid(Y) | | Pid(X) |
- * +-------------+ +-------------+ +-------------+ +-------------+
- * Name: | Atom(foo) | | Atom(foo) | | Atom(foo) | | Atom(foo) |
- * +-------------+ +-------------+ +-------------+ +-------------+
- * The reason for the node atom in X->pid is that we don't know the actual
- * pid of the monitored process on the other node when setting the monitor
- * (which is done asyncronously).
- **********************************************************************/
-#ifndef _ERL_MONITORS_H
-#define _ERL_MONITORS_H
-
-/* Type tags for monitors */
-#define MON_ORIGIN 1
-#define MON_TARGET 2
-#define MON_NIF_TARGET 3
-#define MON_TIME_OFFSET 4
-
-/* Type tags for links */
-#define LINK_PID 1 /* ...Or port */
-#define LINK_NODE 3 /* "Node monitor" */
-
-/* Size of a monitor without heap, in words (fixalloc) */
-#define ERTS_MONITOR_SIZE ((sizeof(ErtsMonitor) - sizeof(Uint))/sizeof(Uint))
-#define ERTS_MONITOR_SH_SIZE (ERTS_MONITOR_SIZE + ERTS_REF_THING_SIZE)
-#define ERTS_LINK_SIZE ((sizeof(ErtsLink) - sizeof(Uint))/sizeof(Uint))
-#define ERTS_LINK_SH_SIZE ERTS_LINK_SIZE /* Size of fix-alloced links */
-
-/* ErtsMonitor and ErtsLink *need* to begin in a similar way as
- ErtsMonitorOrLink */
-typedef struct erts_monitor_or_link {
- struct erts_monitor_or_link *left, *right;
- Sint16 balance;
-} ErtsMonitorOrLink;
-
-typedef struct erts_monitor {
- struct erts_monitor *left, *right;
- Sint16 balance;
- Uint16 type; /* MON_ORIGIN | MON_TARGET | MON_NIF_TARGET | MON_TIME_OFFSET */
- Eterm ref;
- union {
- Eterm pid; /* In case of distributed named monitor, this is the
- * nodename atom in MON_ORIGIN process, otherwise a pid or,
- * in case of a MON_TARGET, a port
- */
- struct ErtsResource_* resource; /* MON_NIF_TARGET */
- }u;
- Eterm name; /* When monitoring a named process: atom() else [] */
- Uint heap[1]; /* Larger in reality */
-} ErtsMonitor;
-
-typedef struct erts_link {
- struct erts_link *left, *right;
- Sint16 balance;
- Uint16 type; /* LINK_PID | LINK_NODE */
- Eterm pid; /* When node monitor,
- the node atom is here instead */
- union {
- struct erts_link *root; /* Used only in dist entries */
- Uint refc;
- } shared;
- Uint heap[1]; /* Larger in reality */
-} ErtsLink;
-
-typedef struct erts_suspend_monitor {
- struct erts_suspend_monitor *left, *right;
- Sint16 balance;
-
- int pending;
- int active;
- Eterm pid;
-} ErtsSuspendMonitor;
-
-#define ERTS_LINK_ROOT(Linkp) ((Linkp)->shared.root)
-#define ERTS_LINK_REFC(Linkp) ((Linkp)->shared.refc)
-
-Uint erts_tot_link_lh_size(void);
-
-
-/* Prototypes */
-void erts_destroy_monitor(ErtsMonitor *mon);
-void erts_add_monitor(ErtsMonitor **root, Uint type, Eterm ref, UWord entity,
- Eterm name);
-ErtsMonitor *erts_remove_monitor(ErtsMonitor **root, Eterm ref);
-ErtsMonitor *erts_lookup_monitor(ErtsMonitor *root, Eterm ref);
-void erts_sweep_monitors(ErtsMonitor *root,
- void (*doit)(ErtsMonitor *, void *),
- void *context);
-
-void erts_destroy_link(ErtsLink *lnk);
-/* Returns 0 if OK, < 0 if already present */
-int erts_add_link(ErtsLink **root, Uint type, Eterm pid);
-ErtsLink *erts_add_or_lookup_link(ErtsLink **root, Uint type, Eterm pid);
-ErtsLink *erts_remove_link(ErtsLink **root, Eterm pid);
-ErtsLink *erts_lookup_link(ErtsLink *root, Eterm pid);
-void erts_sweep_links(ErtsLink *root,
- void (*doit)(ErtsLink *, void *),
- void *context);
-
-void erts_destroy_suspend_monitor(ErtsSuspendMonitor *sproc);
-void erts_sweep_suspend_monitors(ErtsSuspendMonitor *root,
- void (*doit)(ErtsSuspendMonitor *, void *),
- void *context);
-ErtsSuspendMonitor *erts_add_or_lookup_suspend_monitor(ErtsSuspendMonitor **root,
- Eterm pid);
-ErtsSuspendMonitor *erts_lookup_suspend_monitor(ErtsSuspendMonitor *root,
- Eterm pid);
-void erts_delete_suspend_monitor(ErtsSuspendMonitor **root, Eterm pid);
-void erts_init_monitors(void);
-void erts_one_link_size(ErtsLink *lnk, void *vpu);
-void erts_one_mon_size(ErtsMonitor *mon, void *vpu);
-
-#define erts_doforall_monitors erts_sweep_monitors
-#define erts_doforall_links erts_sweep_links
-#define erts_doforall_suspend_monitors erts_sweep_suspend_monitors
-
-#endif /* _ERL_MONITORS_H */
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index c60cc7fecf..cd4fd7b635 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2009-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2009-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -57,6 +57,7 @@
#include "erl_bif_unique.h"
#include "erl_utils.h"
#include "erl_io_queue.h"
+#include "erl_proc_sig_queue.h"
#undef ERTS_WANT_NFUNC_SCHED_INTERNALS__
#define ERTS_WANT_NFUNC_SCHED_INTERNALS__
#include "erl_nfunc_sched.h"
@@ -658,7 +659,7 @@ int erts_flush_trace_messages(Process *c_p, ErtsProcLocks c_p_locks)
rp_locks = 0;
if (rp->common.id == c_p->common.id)
rp_locks = c_p_locks;
- erts_queue_messages(rp, rp_locks, first, last, len, c_p->common.id);
+ erts_queue_messages(rp, rp_locks, first, last, len);
if (rp->common.id == c_p->common.id)
rp_locks &= ~c_p_locks;
if (rp_locks)
@@ -700,6 +701,7 @@ int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
Process* rp;
Process* c_p;
ErtsMessage *mp;
+ Eterm from;
Eterm receiver = to_pid->pid;
int scheduler;
@@ -778,7 +780,7 @@ int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
msg = copy_struct_litopt(msg, sz, &hp, ohp, &litarea);
}
- ERL_MESSAGE_TERM(mp) = msg;
+ from = c_p ? c_p->common.id : am_undefined;
if (!env || !env->tracee) {
@@ -797,7 +799,6 @@ int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
ErlTraceMessageQueue *msgq;
Process *t_p = env->tracee;
-
erts_proc_lock(t_p, ERTS_PROC_LOCK_TRACE);
msgq = t_p->trace_msg_q;
@@ -817,6 +818,9 @@ int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
rp_locks & ERTS_PROC_LOCK_MSGQ ||
erts_proc_trylock(rp, ERTS_PROC_LOCK_MSGQ) == EBUSY) {
+ ERL_MESSAGE_TERM(mp) = msg;
+ ERL_MESSAGE_FROM(mp) = from;
+
if (!msgq) {
msgq = erts_alloc(ERTS_ALC_T_TRACE_MSG_QUEUE,
sizeof(ErlTraceMessageQueue));
@@ -846,8 +850,7 @@ int enif_send(ErlNifEnv* env, const ErlNifPid* to_pid,
}
}
- erts_queue_message(rp, rp_locks, mp, msg,
- c_p ? c_p->common.id : am_undefined);
+ erts_queue_message(rp, rp_locks, mp, msg, from);
done:
if (c_p == rp)
@@ -2206,71 +2209,61 @@ static void rollback_opened_resource_types(void)
}
}
-struct destroy_monitor_ctx
-{
- ErtsResource* resource;
- int exiting_procs;
- int scheduler;
-};
+#ifdef ARCH_64
+# define ERTS_RESOURCE_DYING_FLAG (((Uint) 1) << 63)
+#else
+# define ERTS_RESOURCE_DYING_FLAG (((Uint) 1) << 31)
+#endif
+#define ERTS_RESOURCE_REFC_MASK (~ERTS_RESOURCE_DYING_FLAG)
-static void destroy_one_monitor(ErtsMonitor* mon, void* context)
+static ERTS_INLINE void
+rmon_set_dying(ErtsResourceMonitors *rms)
{
- struct destroy_monitor_ctx* ctx = (struct destroy_monitor_ctx*) context;
- Process* rp;
- ErtsMonitor *rmon = NULL;
- int is_exiting;
+ rms->refc |= ERTS_RESOURCE_DYING_FLAG;
+}
- ASSERT(mon->type == MON_ORIGIN);
- ASSERT(is_internal_pid(mon->u.pid));
- ASSERT(is_internal_ref(mon->ref));
+static ERTS_INLINE int
+rmon_is_dying(ErtsResourceMonitors *rms)
+{
+ return !!(rms->refc & ERTS_RESOURCE_DYING_FLAG);
+}
- if (ctx->scheduler > 0) { /* Normal scheduler */
- rp = erts_proc_lookup(mon->u.pid);
- }
- else {
- rp = erts_proc_lookup_inc_refc(mon->u.pid);
- }
+static ERTS_INLINE void
+rmon_refc_inc(ErtsResourceMonitors *rms)
+{
+ rms->refc++;
+}
- if (!rp) {
- is_exiting = 1;
- }
- if (rp) {
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (ERTS_PROC_IS_EXITING(rp)) {
- is_exiting = 1;
- } else {
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- ASSERT(rmon);
- is_exiting = 0;
- }
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (ctx->scheduler <= 0)
- erts_proc_dec_refc(rp);
- }
- if (is_exiting) {
- ctx->resource->monitors->pending_failed_fire++;
- }
+static ERTS_INLINE Uint
+rmon_refc_dec_read(ErtsResourceMonitors *rms)
+{
+ Uint res;
+ ASSERT((rms->refc & ERTS_RESOURCE_REFC_MASK) != 0);
+ res = --rms->refc;
+ return res & ERTS_RESOURCE_REFC_MASK;
+}
- /* ToDo: Delay destruction after monitor_locks */
- if (rmon) {
- ASSERT(rmon->type == MON_NIF_TARGET);
- ASSERT(rmon->u.resource == ctx->resource);
- erts_destroy_monitor(rmon);
- }
- erts_destroy_monitor(mon);
+static ERTS_INLINE void
+rmon_refc_dec(ErtsResourceMonitors *rms)
+{
+ ASSERT((rms->refc & ERTS_RESOURCE_REFC_MASK) != 0);
+ --rms->refc;
}
-static void destroy_all_monitors(ErtsMonitor* monitors, ErtsResource* resource)
+static ERTS_INLINE Uint
+rmon_refc_read(ErtsResourceMonitors *rms)
{
- struct destroy_monitor_ctx ctx;
+ return rms->refc & ERTS_RESOURCE_REFC_MASK;
+}
- execution_state(NULL, NULL, &ctx.scheduler);
+static void dtor_demonitor(ErtsMonitor* mon, void* context)
+{
+ ASSERT(erts_monitor_is_origin(mon));
+ ASSERT(is_internal_pid(mon->other.item));
- ctx.resource = resource;
- erts_sweep_monitors(monitors, &destroy_one_monitor, &ctx);
+ erts_proc_sig_send_demonitor(mon);
}
-
# define NIF_RESOURCE_DTOR &nif_resource_dtor
static int nif_resource_dtor(Binary* bin)
@@ -2281,34 +2274,36 @@ static int nif_resource_dtor(Binary* bin)
if (resource->monitors) {
ErtsResourceMonitors* rm = resource->monitors;
+ int kill;
+ ErtsMonitor *root;
+ Uint refc;
ASSERT(type->down);
erts_mtx_lock(&rm->lock);
ASSERT(erts_refc_read(&bin->intern.refc, 0) == 0);
- if (rm->root) {
- ASSERT(!rm->is_dying);
- destroy_all_monitors(rm->root, resource);
+ kill = !rmon_is_dying(rm);
+ if (kill) {
+ rmon_set_dying(rm);
+ root = rm->root;
rm->root = NULL;
}
- if (rm->pending_failed_fire) {
- /*
- * Resource death struggle prolonged to serve exiting process(es).
- * Destructor will be called again when last exiting process
- * tries to fire its MON_NIF_TARGET monitor (and fails).
- *
- * This resource is doomed. It has no "real" references and
- * should get not get called upon to do anything except the
- * final destructor call.
- *
- * We keep refc at 0 and use a separate counter for exiting
- * processes to avoid resource getting revived by "dec_term".
- */
- ASSERT(!rm->is_dying);
- rm->is_dying = 1;
- erts_mtx_unlock(&rm->lock);
- return 0;
- }
+ refc = rmon_refc_read(rm);
erts_mtx_unlock(&rm->lock);
+
+ if (kill)
+ erts_monitor_tree_foreach_delete(&root,
+ dtor_demonitor,
+ NULL);
+
+ /*
+ * If resource->monitors->refc != 0 there are
+ * outstanding references to the resource from
+ * monitors that has not been removed yet.
+ * nif_resource_dtor() will be called again this
+ * reference count reach zero.
+ */
+ if (refc != 0)
+ return 0; /* we'll be back... */
erts_mtx_destroy(&rm->lock);
}
@@ -2338,54 +2333,82 @@ void erts_resource_stop(ErtsResource* resource, ErlNifEvent e,
post_nif_noproc(&msg_env);
}
-void erts_fire_nif_monitor(ErtsResource* resource, Eterm pid, Eterm ref)
+void erts_nif_demonitored(ErtsResource* resource)
{
- ErtsMonitor* rmon;
+ ErtsResourceMonitors* rmp = resource->monitors;
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
+ int free_me;
+
+ ASSERT(rmp);
+ ASSERT(resource->type->down);
+
+ erts_mtx_lock(&rmp->lock);
+ free_me = ((rmon_refc_dec_read(rmp) == 0) & !!rmon_is_dying(rmp));
+ erts_mtx_unlock(&rmp->lock);
+
+ if (free_me)
+ erts_bin_free(&bin->binary);
+}
+
+void erts_fire_nif_monitor(ErtsMonitor *tmon)
+{
+ ErtsResource* resource;
+ ErtsMonitorData *mdp;
+ ErtsMonitor *omon;
+ ErtsBinary* bin;
struct enif_msg_environment_t msg_env;
ErlNifPid nif_pid;
ErlNifMonitor nif_monitor;
- ErtsResourceMonitors* rmp = resource->monitors;
+ ErtsResourceMonitors* rmp;
+ Uint mrefc, brefc;
+ int active, is_dying;
+
+ ASSERT(tmon->type == ERTS_MON_TYPE_RESOURCE);
+ ASSERT(erts_monitor_is_target(tmon));
+
+ resource = tmon->other.ptr;
+ bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
+ rmp = resource->monitors;
+
+ mdp = erts_monitor_to_data(tmon);
+ omon = &mdp->origin;
ASSERT(rmp);
ASSERT(resource->type->down);
erts_mtx_lock(&rmp->lock);
- rmon = erts_remove_monitor(&rmp->root, ref);
- if (!rmon) {
- int free_me = (--rmp->pending_failed_fire == 0) && rmp->is_dying;
- ASSERT(rmp->pending_failed_fire >= 0);
- erts_mtx_unlock(&rmp->lock);
-
- if (free_me) {
- ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) == 0);
- erts_bin_free(&bin->binary);
- }
- return;
+
+ mrefc = rmon_refc_dec_read(rmp);
+ is_dying = rmon_is_dying(rmp);
+ active = !is_dying && erts_monitor_is_in_table(omon);
+
+ if (active) {
+ erts_monitor_tree_delete(&rmp->root, omon);
+ brefc = (Uint) erts_refc_inc_unless(&bin->binary.intern.refc, 0, 0);
}
- ASSERT(!rmp->is_dying);
- if (erts_refc_inc_unless(&bin->binary.intern.refc, 0, 0) == 0) {
- /*
- * Racing resource destruction.
- * To avoid a more complex refc-dance with destructing thread
- * we avoid calling 'down' and just silently remove the monitor.
- * This can happen even for non smp as destructor calls may be scheduled.
- */
- erts_mtx_unlock(&rmp->lock);
+
+ erts_mtx_unlock(&rmp->lock);
+
+ if (!active) {
+ ASSERT(!is_dying || erts_refc_read(&bin->binary.intern.refc, 0) == 0);
+ if (is_dying && mrefc == 0)
+ erts_bin_free(&bin->binary);
+ erts_monitor_release(tmon);
}
else {
- erts_mtx_unlock(&rmp->lock);
-
- ASSERT(rmon->u.pid == pid);
- erts_ref_to_driver_monitor(ref, &nif_monitor);
- nif_pid.pid = pid;
- pre_nif_noproc(&msg_env, resource->type->owner, NULL);
- resource->type->down(&msg_env.env, resource->data, &nif_pid, &nif_monitor);
- post_nif_noproc(&msg_env);
+ if (brefc > 0) {
+ ASSERT(is_internal_pid(omon->other.item));
+ erts_ref_to_driver_monitor(mdp->ref, &nif_monitor);
+ nif_pid.pid = omon->other.item;
+ pre_nif_noproc(&msg_env, resource->type->owner, NULL);
+ resource->type->down(&msg_env.env, resource->data, &nif_pid, &nif_monitor);
+ post_nif_noproc(&msg_env);
+
+ erts_bin_release(&bin->binary);
+ }
- erts_bin_release(&bin->binary);
+ erts_monitor_release_both(mdp);
}
- erts_destroy_monitor(rmon);
}
void* enif_alloc_resource(ErlNifResourceType* type, size_t data_sz)
@@ -2422,8 +2445,7 @@ void* enif_alloc_resource(ErlNifResourceType* type, size_t data_sz)
erts_mtx_init(&resource->monitors->lock, "resource_monitors", NIL,
ERTS_LOCK_FLAGS_CATEGORY_GENERIC);
resource->monitors->root = NULL;
- resource->monitors->pending_failed_fire = 0;
- resource->monitors->is_dying = 0;
+ resource->monitors->refc = 0;
resource->monitors->user_data_sz = data_sz;
}
else {
@@ -2438,7 +2460,7 @@ void enif_release_resource(void* obj)
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(bin) == NIF_RESOURCE_DTOR);
- ASSERT(!(resource->monitors && resource->monitors->is_dying));
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) != 0);
#ifdef DEBUG
erts_refc_dec(&resource->nif_refc, 0);
#endif
@@ -2451,7 +2473,7 @@ void enif_keep_resource(void* obj)
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
ASSERT(ERTS_MAGIC_BIN_DESTRUCTOR(bin) == NIF_RESOURCE_DTOR);
- ASSERT(!(resource->monitors && resource->monitors->is_dying));
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) != 0);
#ifdef DEBUG
erts_refc_inc(&resource->nif_refc, 1);
#endif
@@ -2461,7 +2483,7 @@ void enif_keep_resource(void* obj)
Eterm erts_bld_resource_ref(Eterm** hpp, ErlOffHeap* oh, ErtsResource* resource)
{
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
- ASSERT(!(resource->monitors && resource->monitors->is_dying));
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) != 0);
return erts_mk_magic_ref(hpp, oh, &bin->binary);
}
@@ -2470,7 +2492,7 @@ ERL_NIF_TERM enif_make_resource(ErlNifEnv* env, void* obj)
ErtsResource* resource = DATA_TO_RESOURCE(obj);
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(resource);
Eterm* hp = alloc_heap(env, ERTS_MAGIC_REF_THING_SIZE);
- ASSERT(!(resource->monitors && resource->monitors->is_dying));
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) != 0);
return erts_mk_magic_ref(&hp, &MSO(env->proc), &bin->binary);
}
@@ -3150,123 +3172,88 @@ int enif_map_iterator_get_pair(ErlNifEnv *env,
int enif_monitor_process(ErlNifEnv* env, void* obj, const ErlNifPid* target_pid,
ErlNifMonitor* monitor)
{
- int scheduler;
ErtsResource* rsrc = DATA_TO_RESOURCE(obj);
- Process *rp;
Eterm tmp[ERTS_REF_THING_SIZE];
Eterm ref;
- int retval;
+ ErtsResourceMonitors *rm;
+ ErtsMonitorData *mdp;
ASSERT(ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(rsrc)->magic_binary.destructor
== NIF_RESOURCE_DTOR);
- ASSERT(!(rsrc->monitors && rsrc->monitors->is_dying));
+ ASSERT(erts_refc_read(&ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(rsrc)->binary.intern.refc, 0) != 0);
ASSERT(!rsrc->monitors == !rsrc->type->down);
-
- if (!rsrc->monitors) {
+ rm = rsrc->monitors;
+ if (!rm) {
ASSERT(!rsrc->type->down);
return -1;
}
ASSERT(rsrc->type->down);
- execution_state(env, NULL, &scheduler);
+ ref = erts_make_ref_in_buffer(tmp);
- if (scheduler > 0) /* Normal scheduler */
- rp = erts_proc_lookup_raw(target_pid->pid);
- else
- rp = erts_proc_lookup_raw_inc_refc(target_pid->pid);
+ mdp = erts_monitor_create(ERTS_MON_TYPE_RESOURCE, ref,
+ (Eterm) rsrc, target_pid->pid, NIL);
+ erts_mtx_lock(&rm->lock);
+ ASSERT(!rmon_is_dying(rm));
+ erts_monitor_tree_insert(&rm->root, &mdp->origin);
+ rmon_refc_inc(rm);
+ erts_mtx_unlock(&rm->lock);
- if (!rp)
- return 1;
+ if (!erts_proc_sig_send_monitor(&mdp->target, target_pid->pid)) {
+ /* Failed to send monitor signal; cleanup... */
+#ifdef DEBUG
+ ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(rsrc);
+#endif
- ref = erts_make_ref_in_buffer(tmp);
+ erts_mtx_lock(&rm->lock);
+ ASSERT(!rmon_is_dying(rm));
+ erts_monitor_tree_delete(&rm->root, &mdp->origin);
+ rmon_refc_dec(rm);
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 1) != 0);
+ erts_mtx_unlock(&rm->lock);
+ erts_monitor_release_both(mdp);
- erts_mtx_lock(&rsrc->monitors->lock);
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (ERTS_PSFLG_FREE & erts_atomic32_read_nob(&rp->state)) {
- retval = 1;
- }
- else {
- erts_add_monitor(&rsrc->monitors->root, MON_ORIGIN, ref, rp->common.id, NIL);
- erts_add_monitor(&ERTS_P_MONITORS(rp), MON_NIF_TARGET, ref, (UWord)rsrc, NIL);
- retval = 0;
+ return 1;
}
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- erts_mtx_unlock(&rsrc->monitors->lock);
- if (scheduler <= 0)
- erts_proc_dec_refc(rp);
if (monitor)
erts_ref_to_driver_monitor(ref,monitor);
- return retval;
+ return 0;
}
int enif_demonitor_process(ErlNifEnv* env, void* obj, const ErlNifMonitor* monitor)
{
- int scheduler;
ErtsResource* rsrc = DATA_TO_RESOURCE(obj);
#ifdef DEBUG
ErtsBinary* bin = ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(rsrc);
#endif
- Process *rp;
+ ErtsResourceMonitors *rm;
ErtsMonitor *mon;
- ErtsMonitor *rmon = NULL;
Eterm ref_heap[ERTS_REF_THING_SIZE];
Eterm ref;
- int is_exiting;
ASSERT(bin->magic_binary.destructor == NIF_RESOURCE_DTOR);
- ASSERT(!(rsrc->monitors && rsrc->monitors->is_dying));
-
- execution_state(env, NULL, &scheduler);
+ ASSERT(erts_refc_read(&bin->binary.intern.refc, 0) != 0);
ref = erts_driver_monitor_to_ref(ref_heap, monitor);
- erts_mtx_lock(&rsrc->monitors->lock);
- mon = erts_remove_monitor(&rsrc->monitors->root, ref);
+ rm = rsrc->monitors;
+ erts_mtx_lock(&rm->lock);
+ ASSERT(!rmon_is_dying(rm));
+ mon = erts_monitor_tree_lookup(rm->root, ref);
+ if (mon)
+ erts_monitor_tree_delete(&rm->root, mon);
+ erts_mtx_unlock(&rm->lock);
- if (mon == NULL) {
- erts_mtx_unlock(&rsrc->monitors->lock);
+ if (!mon)
return 1;
- }
-
- ASSERT(mon->type == MON_ORIGIN);
- ASSERT(is_internal_pid(mon->u.pid));
-
- if (scheduler > 0) /* Normal scheduler */
- rp = erts_proc_lookup(mon->u.pid);
- else
- rp = erts_proc_lookup_inc_refc(mon->u.pid);
-
- if (!rp) {
- is_exiting = 1;
- }
- else {
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (ERTS_PROC_IS_EXITING(rp)) {
- is_exiting = 1;
- } else {
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), ref);
- ASSERT(rmon);
- is_exiting = 0;
- }
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (scheduler <= 0)
- erts_proc_dec_refc(rp);
- }
- if (is_exiting) {
- rsrc->monitors->pending_failed_fire++;
- }
- erts_mtx_unlock(&rsrc->monitors->lock);
+ ASSERT(erts_monitor_is_origin(mon));
+ ASSERT(is_internal_pid(mon->other.item));
- if (rmon) {
- ASSERT(rmon->type == MON_NIF_TARGET);
- ASSERT(rmon->u.resource == rsrc);
- erts_destroy_monitor(rmon);
- }
- erts_destroy_monitor(mon);
+ erts_proc_sig_send_demonitor(mon);
return 0;
}
diff --git a/erts/emulator/beam/erl_node_container_utils.h b/erts/emulator/beam/erl_node_container_utils.h
index 6ec428e282..99e938266b 100644
--- a/erts/emulator/beam/erl_node_container_utils.h
+++ b/erts/emulator/beam/erl_node_container_utils.h
@@ -318,5 +318,3 @@ extern ErtsPTab erts_port;
#define is_not_ref(x) (!is_ref(x))
#endif
-
-
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index e8901a652f..ca83e70046 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2001-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2001-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -31,6 +31,7 @@
#include "dtrace-wrapper.h"
#include "erl_binary.h"
#include "erl_bif_unique.h"
+#include "erl_proc_sig_queue.h"
Hash erts_dist_table;
Hash erts_node_table;
@@ -174,11 +175,7 @@ dist_table_alloc(void *dep_tmpl)
dep->flags = 0;
dep->version = 0;
- erts_mtx_init(&dep->lnk_mtx, "dist_entry_links", sysname,
- ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
- dep->node_links = NULL;
- dep->nlinks = NULL;
- dep->monitors = NULL;
+ dep->mld = NULL;
erts_mtx_init(&dep->qlock, "dist_entry_out_queue", sysname,
ERTS_LOCK_FLAGS_CATEGORY_DISTRIBUTION);
@@ -225,9 +222,7 @@ dist_table_free(void *vdep)
ASSERT(de_refc_read(dep, -1) == -1);
ASSERT(dep->state == ERTS_DE_STATE_IDLE);
ASSERT(is_nil(dep->cid));
- ASSERT(dep->nlinks == NULL);
- ASSERT(dep->node_links == NULL);
- ASSERT(dep->monitors == NULL);
+ ASSERT(dep->mld == NULL);
/* Link out */
@@ -250,7 +245,6 @@ dist_table_free(void *vdep)
ASSERT(!dep->cache);
erts_rwmtx_destroy(&dep->rwmtx);
- erts_mtx_destroy(&dep->lnk_mtx);
erts_mtx_destroy(&dep->qlock);
#ifdef DEBUG
@@ -606,7 +600,9 @@ erts_set_dist_entry_not_connected(DistEntry *dep)
void
erts_set_dist_entry_pending(DistEntry *dep)
{
+ ErtsMonLnkDist *mld = erts_mon_link_dist_create(dep->sysname);
ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
+
erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
ASSERT(dep != erts_this_dist_entry);
@@ -631,6 +627,10 @@ erts_set_dist_entry_pending(DistEntry *dep)
dep->flags = (DFLAG_DIST_MANDATORY | DFLAG_DIST_HOPEFULLY | DFLAG_NO_MAGIC);
dep->connection_id = (dep->connection_id + 1) & ERTS_DIST_CON_ID_MASK;
+ ASSERT(!dep->mld);
+ mld->connection_id = dep->connection_id;
+ dep->mld = mld;
+
dep->prev = NULL;
dep->next = erts_pending_dist_entries;
if(erts_pending_dist_entries) {
@@ -647,6 +647,8 @@ erts_set_dist_entry_connected(DistEntry *dep, Eterm cid, Uint flags)
{
erts_aint32_t set_qflgs;
+ ASSERT(dep->mld);
+
ERTS_LC_ASSERT(erts_lc_is_de_rwlocked(dep));
erts_rwmtx_rwlock(&erts_dist_table_rwmtx);
@@ -1099,6 +1101,7 @@ static Eterm AM_system;
static Eterm AM_timer;
static Eterm AM_delayed_delete_timer;
static Eterm AM_thread_progress_delete_timer;
+static Eterm AM_signal;
static void setup_reference_table(void);
static Eterm reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp);
@@ -1120,6 +1123,7 @@ typedef struct node_referrer_ {
int bin_ref;
int timer_ref;
int system_ref;
+ int signal_ref;
Eterm id;
Uint id_heap[ID_HEAP_SIZE];
ErlOffHeap off_heap;
@@ -1137,6 +1141,7 @@ typedef struct dist_referrer_ {
int node_ref;
int ctrl_ref;
int system_ref;
+ int signal_ref;
Eterm id;
Uint creation;
Uint id_heap[ID_HEAP_SIZE];
@@ -1190,6 +1195,7 @@ erts_get_node_and_dist_references(struct process *proc)
INIT_AM(system);
INIT_AM(delayed_delete_timer);
INIT_AM(thread_progress_delete_timer);
+ INIT_AM(signal);
references_atoms_need_init = 0;
}
@@ -1226,6 +1232,7 @@ erts_get_node_and_dist_references(struct process *proc)
#define MONITOR_REF 7
#define TIMER_REF 8
#define SYSTEM_REF 9
+#define SIGNAL_REF 10
#define INC_TAB_SZ 10
@@ -1260,6 +1267,7 @@ insert_dist_referrer(ReferredDist *referred_dist,
drp->node_ref = 0;
drp->ctrl_ref = 0;
drp->system_ref = 0;
+ drp->signal_ref = 0;
}
switch (type) {
@@ -1268,6 +1276,7 @@ insert_dist_referrer(ReferredDist *referred_dist,
case HEAP_REF: drp->heap_ref++; break;
case ETS_REF: drp->ets_ref++; break;
case SYSTEM_REF: drp->system_ref++; break;
+ case SIGNAL_REF: drp->signal_ref++; break;
default: ASSERT(0);
}
}
@@ -1321,6 +1330,7 @@ insert_node_referrer(ReferredNode *referred_node, int type, Eterm id)
nrp->bin_ref = 0;
nrp->timer_ref = 0;
nrp->system_ref = 0;
+ nrp->signal_ref = 0;
}
switch (type) {
@@ -1331,6 +1341,7 @@ insert_node_referrer(ReferredNode *referred_node, int type, Eterm id)
case MONITOR_REF: nrp->monitor_ref++; break;
case TIMER_REF: nrp->timer_ref++; break;
case SYSTEM_REF: nrp->system_ref++; break;
+ case SIGNAL_REF: nrp->signal_ref++; break;
default: ASSERT(0);
}
}
@@ -1438,49 +1449,145 @@ insert_offheap(ErlOffHeap *oh, int type, Eterm id)
}
}
-static void doit_insert_monitor(ErtsMonitor *monitor, void *p)
+static void insert_monitor_data(ErtsMonitor *mon, int type, Eterm id)
+{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ if ((mdp->origin.flags & (ERTS_ML_FLG_DBG_VISITED
+ | ERTS_ML_FLG_EXTENDED)) == ERTS_ML_FLG_EXTENDED) {
+ if (mon->type != ERTS_MON_TYPE_NODE) {
+ ErtsMonitorDataExtended *mdep = (ErtsMonitorDataExtended *) mdp;
+ ASSERT(mon->flags & ERTS_ML_FLG_EXTENDED);
+ if (mdep->uptr.ohhp) {
+ ErlOffHeap oh;
+ ERTS_INIT_OFF_HEAP(&oh);
+ oh.first = mdep->uptr.ohhp;
+ insert_offheap(&oh, type, id);
+ }
+ }
+ }
+ mdp->origin.flags |= ERTS_ML_FLG_DBG_VISITED;
+}
+
+static void insert_monitor(ErtsMonitor *mon, void *idp)
+{
+ Eterm id = *((Eterm *) idp);
+ insert_monitor_data(mon, MONITOR_REF, id);
+}
+
+static void clear_visited_monitor(ErtsMonitor *mon, void *p)
+{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ mdp->origin.flags &= ~ERTS_ML_FLG_DBG_VISITED;
+}
+
+static void
+insert_p_monitors(ErtsPTabElementCommon *p)
+{
+ Eterm id = p->id;
+ erts_monitor_tree_foreach(p->u.alive.monitors,
+ insert_monitor,
+ (void *) &id);
+ erts_monitor_list_foreach(p->u.alive.lt_monitors,
+ insert_monitor,
+ (void *) &id);
+}
+
+static void
+insert_dist_monitors(DistEntry *dep)
+{
+ if (dep->mld) {
+ erts_monitor_list_foreach(dep->mld->monitors,
+ insert_monitor,
+ (void *) &dep->sysname);
+ erts_monitor_tree_foreach(dep->mld->orig_name_monitors,
+ insert_monitor,
+ (void *) &dep->sysname);
+ }
+}
+
+static void
+clear_visited_p_monitors(ErtsPTabElementCommon *p)
+{
+ erts_monitor_tree_foreach(p->u.alive.monitors,
+ clear_visited_monitor,
+ NULL);
+ erts_monitor_list_foreach(p->u.alive.lt_monitors,
+ clear_visited_monitor,
+ NULL);
+}
+
+static void
+clear_visited_dist_monitors(DistEntry *dep)
+{
+ if (dep->mld) {
+ erts_monitor_list_foreach(dep->mld->monitors,
+ clear_visited_monitor,
+ NULL);
+ erts_monitor_tree_foreach(dep->mld->orig_name_monitors,
+ clear_visited_monitor,
+ NULL);
+ }
+}
+
+static void insert_link_data(ErtsLink *lnk, int type, Eterm id)
{
- Eterm *idp = p;
- if(monitor->type != MON_NIF_TARGET && is_external(monitor->u.pid))
- insert_node(external_thing_ptr(monitor->u.pid)->node, MONITOR_REF, *idp);
- if(is_external(monitor->ref))
- insert_node(external_thing_ptr(monitor->ref)->node, MONITOR_REF, *idp);
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+ if ((ldp->a.flags & (ERTS_ML_FLG_DBG_VISITED
+ | ERTS_ML_FLG_EXTENDED)) == ERTS_ML_FLG_EXTENDED) {
+ ErtsLinkDataExtended *ldep = (ErtsLinkDataExtended *) ldp;
+ if (ldep->ohhp) {
+ ErlOffHeap oh;
+ ERTS_INIT_OFF_HEAP(&oh);
+ oh.first = ldep->ohhp;
+ insert_offheap(&oh, type, id);
+ }
+ }
+ ldp->a.flags |= ERTS_ML_FLG_DBG_VISITED;
}
-static void doit_insert_link(ErtsLink *lnk, void *p)
+static void insert_link(ErtsLink *lnk, void *idp)
{
- Eterm *idp = p;
- if(is_external(lnk->pid))
- insert_node(external_thing_ptr(lnk->pid)->node, LINK_REF,
- *idp);
+ Eterm id = *((Eterm *) idp);
+ insert_link_data(lnk, LINK_REF, id);
}
+static void clear_visited_link(ErtsLink *lnk, void *p)
+{
+ ErtsLinkData *ldp = erts_link_to_data(lnk);
+ ldp->a.flags &= ~ERTS_ML_FLG_DBG_VISITED;
+}
static void
-insert_monitors(ErtsMonitor *monitors, Eterm id)
+insert_p_links(ErtsPTabElementCommon *p)
{
- erts_doforall_monitors(monitors,&doit_insert_monitor,&id);
+ Eterm id = p->id;
+ erts_link_tree_foreach(p->u.alive.links, insert_link, (void *) &id);
}
static void
-insert_links(ErtsLink *lnk, Eterm id)
+insert_dist_links(DistEntry *dep)
{
- erts_doforall_links(lnk,&doit_insert_link,&id);
+ if (dep->mld)
+ erts_link_list_foreach(dep->mld->links,
+ insert_link,
+ (void *) &dep->sysname);
}
-static void doit_insert_link2(ErtsLink *lnk, void *p)
+static void
+clear_visited_p_links(ErtsPTabElementCommon *p)
{
- Eterm *idp = p;
- if(is_external(lnk->pid))
- insert_node(external_thing_ptr(lnk->pid)->node, LINK_REF,
- *idp);
- insert_links(ERTS_LINK_ROOT(lnk), *idp);
+ erts_link_tree_foreach(p->u.alive.links,
+ clear_visited_link,
+ NULL);
}
static void
-insert_links2(ErtsLink *lnk, Eterm id)
+clear_visited_dist_links(DistEntry *dep)
{
- erts_doforall_links(lnk,&doit_insert_link2,&id);
+ if (dep->mld)
+ erts_link_list_foreach(dep->mld->links,
+ clear_visited_link,
+ NULL);
}
static void
@@ -1576,6 +1683,60 @@ insert_delayed_delete_dist_entry(void *state,
}
static void
+insert_message(ErtsMessage *msg, int type, Process *proc)
+{
+ ErlHeapFragment *heap_frag = NULL;
+
+ ASSERT(ERTS_SIG_IS_MSG(msg));
+ if (msg->data.attached) {
+ if (msg->data.attached == ERTS_MSG_COMBINED_HFRAG)
+ heap_frag = &msg->hfrag;
+ else if (ERTS_SIG_IS_INTERNAL_MSG(msg))
+ heap_frag = msg->data.heap_frag;
+ else {
+ if (msg->data.dist_ext->dep)
+ insert_dist_entry(msg->data.dist_ext->dep,
+ type, proc->common.id, 0);
+ if (is_not_nil(ERL_MESSAGE_TOKEN(msg)))
+ heap_frag = erts_dist_ext_trailer(msg->data.dist_ext);
+ }
+ }
+ while (heap_frag) {
+ insert_offheap(&(heap_frag->off_heap),
+ type,
+ proc->common.id);
+ heap_frag = heap_frag->next;
+ }
+}
+
+static void
+insert_sig_msg(ErtsMessage *msg, void *arg)
+{
+ insert_message(msg, SIGNAL_REF, (Process *) arg);
+}
+
+static void
+insert_sig_offheap(ErlOffHeap *ohp, void *arg)
+{
+ Process *proc = arg;
+ insert_offheap(ohp, SIGNAL_REF, proc->common.id);
+}
+
+static void
+insert_sig_monitor(ErtsMonitor *mon, void *arg)
+{
+ Process *proc = arg;
+ insert_monitor_data(mon, SIGNAL_REF, proc->common.id);
+}
+
+static void
+insert_sig_link(ErtsLink *lnk, void *arg)
+{
+ Process *proc = arg;
+ insert_link_data(lnk, SIGNAL_REF, proc->common.id);
+}
+
+static void
setup_reference_table(void)
{
ErlHeapFragment *hfp;
@@ -1630,10 +1791,7 @@ setup_reference_table(void)
Process *proc = erts_pix2proc(i);
if (proc) {
int mli;
- ErtsMessage *msg_list[] = {
- proc->msg.first,
- proc->msg_inq.first,
- proc->msg_frag};
+ ErtsMessage *msg_list[] = {proc->msg_frag};
/* Insert Heap */
insert_offheap(&(proc->off_heap),
@@ -1648,34 +1806,24 @@ setup_reference_table(void)
/* Insert msg buffers */
for (mli = 0; mli < sizeof(msg_list)/sizeof(msg_list[0]); mli++) {
ErtsMessage *msg;
- for (msg = msg_list[mli]; msg; msg = msg->next) {
- ErlHeapFragment *heap_frag = NULL;
- if (msg->data.attached) {
- if (msg->data.attached == ERTS_MSG_COMBINED_HFRAG)
- heap_frag = &msg->hfrag;
- else if (is_value(ERL_MESSAGE_TERM(msg)))
- heap_frag = msg->data.heap_frag;
- else {
- if (msg->data.dist_ext->dep)
- insert_dist_entry(msg->data.dist_ext->dep,
- HEAP_REF, proc->common.id, 0);
- if (is_not_nil(ERL_MESSAGE_TOKEN(msg)))
- heap_frag = erts_dist_ext_trailer(msg->data.dist_ext);
- }
- }
- while (heap_frag) {
- insert_offheap(&(heap_frag->off_heap),
- HEAP_REF,
- proc->common.id);
- heap_frag = heap_frag->next;
- }
- }
+ for (msg = msg_list[mli]; msg; msg = msg->next)
+ insert_message(msg, HEAP_REF, proc);
}
+
+ /* Insert signal queue */
+ erts_proc_sig_debug_foreach_sig(proc,
+ insert_sig_msg,
+ insert_sig_offheap,
+ insert_sig_monitor,
+ insert_sig_link,
+ (void *) proc);
+
/* Insert links */
- if (ERTS_P_LINKS(proc))
- insert_links(ERTS_P_LINKS(proc), proc->common.id);
- if (ERTS_P_MONITORS(proc))
- insert_monitors(ERTS_P_MONITORS(proc), proc->common.id);
+ insert_p_links(&proc->common);
+
+ /* Insert monitors */
+ insert_p_monitors(&proc->common);
+
{
DistEntry *dep = ERTS_PROC_GET_DIST_ENTRY(proc);
if (dep)
@@ -1705,11 +1853,9 @@ setup_reference_table(void)
continue;
/* Insert links */
- if (ERTS_P_LINKS(prt))
- insert_links(ERTS_P_LINKS(prt), prt->common.id);
+ insert_p_links(&prt->common);
/* Insert monitors */
- if (ERTS_P_MONITORS(prt))
- insert_monitors(ERTS_P_MONITORS(prt), prt->common.id);
+ insert_p_monitors(&prt->common);
/* Insert port data */
ohp = erts_port_data_offheap(prt);
if (ohp)
@@ -1758,41 +1904,25 @@ setup_reference_table(void)
/* Insert all dist links */
for(dep = erts_visible_dist_entries; dep; dep = dep->next) {
- if(dep->nlinks)
- insert_links2(dep->nlinks, dep->sysname);
- if(dep->node_links)
- insert_links(dep->node_links, dep->sysname);
- if(dep->monitors)
- insert_monitors(dep->monitors, dep->sysname);
+ insert_dist_links(dep);
+ insert_dist_monitors(dep);
}
for(dep = erts_hidden_dist_entries; dep; dep = dep->next) {
- if(dep->nlinks)
- insert_links2(dep->nlinks, dep->sysname);
- if(dep->node_links)
- insert_links(dep->node_links, dep->sysname);
- if(dep->monitors)
- insert_monitors(dep->monitors, dep->sysname);
+ insert_dist_links(dep);
+ insert_dist_monitors(dep);
}
for(dep = erts_pending_dist_entries; dep; dep = dep->next) {
- if(dep->nlinks)
- insert_links2(dep->nlinks, dep->sysname);
- if(dep->node_links)
- insert_links(dep->node_links, dep->sysname);
- if(dep->monitors)
- insert_monitors(dep->monitors, dep->sysname);
+ insert_dist_links(dep);
+ insert_dist_monitors(dep);
}
/* Not connected dist entries should not have any links,
but inspect them anyway */
for(dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
- if(dep->nlinks)
- insert_links2(dep->nlinks, dep->sysname);
- if(dep->node_links)
- insert_links(dep->node_links, dep->sysname);
- if(dep->monitors)
- insert_monitors(dep->monitors, dep->sysname);
+ insert_dist_links(dep);
+ insert_dist_monitors(dep);
}
/* Insert all ets tables */
@@ -1877,6 +2007,10 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
tup = MK_2TUP(AM_system, MK_UINT(nrp->system_ref));
nrl = MK_CONS(tup, nrl);
}
+ if(nrp->signal_ref) {
+ tup = MK_2TUP(AM_signal, MK_UINT(nrp->signal_ref));
+ nrl = MK_CONS(tup, nrl);
+ }
nrid = nrp->id;
if (!IS_CONST(nrp->id)) {
@@ -1900,24 +2034,25 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
}
else if(is_internal_port(nrid)) {
ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->bin_ref
- && !nrp->timer_ref && !nrp->system_ref);
+ && !nrp->timer_ref && !nrp->system_ref && !nrp->signal_ref);
tup = MK_2TUP(AM_port, nrid);
}
else if(nrp->ets_ref) {
ASSERT(!nrp->heap_ref && !nrp->link_ref &&
!nrp->monitor_ref && !nrp->bin_ref
- && !nrp->timer_ref && !nrp->system_ref);
+ && !nrp->timer_ref && !nrp->system_ref && !nrp->signal_ref);
tup = MK_2TUP(AM_ets, nrid);
}
else if(nrp->bin_ref) {
ASSERT(is_small(nrid) || is_big(nrid));
ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->link_ref &&
!nrp->monitor_ref && !nrp->timer_ref
- && !nrp->system_ref);
+ && !nrp->system_ref && !nrp->signal_ref);
tup = MK_2TUP(AM_match_spec, nrid);
}
else {
- ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->bin_ref);
+ ASSERT(!nrp->heap_ref && !nrp->ets_ref && !nrp->bin_ref
+ && !nrp->signal_ref);
ASSERT(is_atom(nrid));
tup = MK_2TUP(AM_dist, nrid);
}
@@ -1961,30 +2096,36 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
tup = MK_2TUP(AM_system, MK_UINT(drp->system_ref));
drl = MK_CONS(tup, drl);
}
+ if(drp->signal_ref) {
+ tup = MK_2TUP(AM_signal, MK_UINT(drp->signal_ref));
+ drl = MK_CONS(tup, drl);
+ }
if (is_internal_pid(drp->id)) {
ASSERT(!drp->node_ref);
tup = MK_2TUP(AM_process, drp->id);
}
else if(is_internal_port(drp->id)) {
- ASSERT(drp->ctrl_ref && !drp->node_ref);
+ ASSERT(drp->ctrl_ref && !drp->node_ref && !drp->signal_ref);
tup = MK_2TUP(AM_port, drp->id);
}
else if (is_tuple(drp->id)) {
Eterm *t;
ASSERT(drp->system_ref && !drp->node_ref
- && !drp->ctrl_ref && !drp->heap_ref && !drp->ets_ref);
+ && !drp->ctrl_ref && !drp->heap_ref && !drp->ets_ref
+ && !drp->signal_ref);
t = tuple_val(drp->id);
ASSERT(2 == arityval(t[0]));
tup = MK_2TUP(t[1], t[2]);
}
else if (drp->ets_ref) {
ASSERT(!drp->heap_ref && !drp->node_ref &&
- !drp->ctrl_ref && !drp->system_ref);
+ !drp->ctrl_ref && !drp->system_ref
+ && !drp->signal_ref);
tup = MK_2TUP(AM_ets, drp->id);
}
- else {
- ASSERT(!drp->ctrl_ref && drp->node_ref);
+ else {
+ ASSERT(!drp->ctrl_ref && drp->node_ref && !drp->signal_ref);
ASSERT(is_atom(drp->id));
tup = MK_2TUP(drp->id, MK_UINT(drp->creation));
tup = MK_2TUP(AM_node, tup);
@@ -2019,10 +2160,21 @@ reference_table_term(Uint **hpp, ErlOffHeap *ohp, Uint *szp)
}
+static void noop_sig_msg(ErtsMessage *msg, void *arg)
+{
+
+}
+
+static void noop_sig_offheap(ErlOffHeap *oh, void *arg)
+{
+
+}
+
static void
delete_reference_table(void)
{
- Uint i;
+ DistEntry *dep;
+ int i, max;
for(i = 0; i < no_referred_nodes; i++) {
NodeReferrer *nrp;
NodeReferrer *tnrp;
@@ -2054,6 +2206,60 @@ delete_reference_table(void)
inserted_bins = inserted_bins->next;
erts_free(ERTS_ALC_T_NC_TMP, (void *)ib);
}
+
+ /* Cleanup... */
+
+ max = erts_ptab_max(&erts_proc);
+ for (i = 0; i < max; i++) {
+ Process *proc = erts_pix2proc(i);
+ if (proc) {
+ clear_visited_p_links(&proc->common);
+ clear_visited_p_monitors(&proc->common);
+ erts_proc_sig_debug_foreach_sig(proc,
+ noop_sig_msg,
+ noop_sig_offheap,
+ clear_visited_monitor,
+ clear_visited_link,
+ (void *) proc);
+ }
+ }
+
+ max = erts_ptab_max(&erts_port);
+ for (i = 0; i < max; i++) {
+ erts_aint32_t state;
+ Port *prt;
+
+ prt = erts_pix2port(i);
+ if (!prt)
+ continue;
+
+ state = erts_atomic32_read_nob(&prt->state);
+ if (state & ERTS_PORT_SFLGS_DEAD)
+ continue;
+
+ clear_visited_p_links(&prt->common);
+ clear_visited_p_monitors(&prt->common);
+ }
+
+ for(dep = erts_visible_dist_entries; dep; dep = dep->next) {
+ clear_visited_dist_links(dep);
+ clear_visited_dist_monitors(dep);
+ }
+
+ for(dep = erts_hidden_dist_entries; dep; dep = dep->next) {
+ clear_visited_dist_links(dep);
+ clear_visited_dist_monitors(dep);
+ }
+
+ for(dep = erts_pending_dist_entries; dep; dep = dep->next) {
+ clear_visited_dist_links(dep);
+ clear_visited_dist_monitors(dep);
+ }
+
+ for(dep = erts_not_connected_dist_entries; dep; dep = dep->next) {
+ clear_visited_dist_links(dep);
+ clear_visited_dist_monitors(dep);
+ }
}
void
diff --git a/erts/emulator/beam/erl_node_tables.h b/erts/emulator/beam/erl_node_tables.h
index 58279017c8..9a792b10b1 100644
--- a/erts/emulator/beam/erl_node_tables.h
+++ b/erts/emulator/beam/erl_node_tables.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2001-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2001-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -18,7 +18,17 @@
* %CopyrightEnd%
*/
-#ifndef ERL_NODE_TABLES_H__
+#ifndef ERL_NODE_TABLES_BASIC__
+#define ERL_NODE_TABLES_BASIC__
+
+typedef struct dist_entry_ DistEntry;
+typedef struct ErtsDistOutputBuf_ ErtsDistOutputBuf;
+void erts_ref_dist_entry(DistEntry *dep);
+void erts_deref_dist_entry(DistEntry *dep);
+
+#endif
+
+#if !defined(ERL_NODE_TABLES_BASIC_ONLY) && !defined(ERL_NODE_TABLES_H__)
#define ERL_NODE_TABLES_H__
/*
@@ -42,14 +52,14 @@
#include "sys.h"
#include "hash.h"
#include "erl_alloc.h"
-#include "erl_process.h"
-#include "erl_monitors.h"
#define ERTS_PORT_TASK_ONLY_BASIC_TYPES__
#include "erl_port_task.h"
#undef ERTS_PORT_TASK_ONLY_BASIC_TYPES__
+#include "erl_process.h"
#define ERTS_BINARY_TYPES_ONLY__
#include "erl_binary.h"
#undef ERTS_BINARY_TYPES_ONLY__
+#include "erl_monitor_link.h"
#define ERTS_NODE_TAB_DELAY_GC_DEFAULT (60)
#define ERTS_NODE_TAB_DELAY_GC_MAX (100*1000*1000)
@@ -82,7 +92,6 @@ enum dist_entry_state {
#define ERTS_DIST_OUTPUT_BUF_DBG_PATTERN ((Uint) 0xf713f713)
#endif
-typedef struct ErtsDistOutputBuf_ ErtsDistOutputBuf;
struct ErtsDistOutputBuf_ {
#ifdef DEBUG
Uint dbg_pattern;
@@ -113,7 +122,7 @@ struct ErtsProcList_;
* unlock mutexes with higher numbers before mutexes with higher numbers.
*/
-typedef struct dist_entry_ {
+struct dist_entry_ {
HashBucket hash_bucket; /* Hash bucket */
struct dist_entry_ *next; /* Next entry in dist_table (not sorted) */
struct dist_entry_ *prev; /* Previous entry in dist_table (not sorted) */
@@ -130,18 +139,7 @@ typedef struct dist_entry_ {
atom cache etc. */
unsigned long version; /* Protocol version */
-
- erts_mtx_t lnk_mtx; /* Protects node_links, nlinks, and
- monitors. */
- ErtsLink *node_links; /* In a dist entry, node links are kept
- in a separate tree, while they are
- colocted with the ordinary link tree
- for processes. It's not due to confusion,
- it's because the link tree for the dist
- entry is in two levels, see erl_monitors.h
- */
- ErtsLink *nlinks; /* Link tree with subtrees */
- ErtsMonitor *monitors; /* Monitor tree */
+ ErtsMonLnkDist *mld; /* Monitors and links */
erts_mtx_t qlock; /* Protects qflgs and out_queue */
erts_atomic32_t qflgs;
@@ -163,7 +161,7 @@ typedef struct dist_entry_ {
ErtsThrPrgrLaterOp later_op;
struct transcode_context* transcode_ctx;
-} DistEntry;
+};
typedef struct erl_node_ {
HashBucket hash_bucket; /* Hash bucket */
@@ -219,16 +217,12 @@ int erts_dist_entry_destructor(Binary *bin);
DistEntry *erts_dhandle_to_dist_entry(Eterm dhandle);
Eterm erts_build_dhandle(Eterm **hpp, ErlOffHeap*, DistEntry*);
Eterm erts_make_dhandle(Process *c_p, DistEntry *dep);
-void erts_ref_dist_entry(DistEntry *dep);
-void erts_deref_dist_entry(DistEntry *dep);
ERTS_GLB_INLINE void erts_deref_node_entry(ErlNode *np);
ERTS_GLB_INLINE void erts_de_rlock(DistEntry *dep);
ERTS_GLB_INLINE void erts_de_runlock(DistEntry *dep);
ERTS_GLB_INLINE void erts_de_rwlock(DistEntry *dep);
ERTS_GLB_INLINE void erts_de_rwunlock(DistEntry *dep);
-ERTS_GLB_INLINE void erts_de_links_lock(DistEntry *dep);
-ERTS_GLB_INLINE void erts_de_links_unlock(DistEntry *dep);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
@@ -264,18 +258,6 @@ erts_de_rwunlock(DistEntry *dep)
erts_rwmtx_rwunlock(&dep->rwmtx);
}
-ERTS_GLB_INLINE void
-erts_de_links_lock(DistEntry *dep)
-{
- erts_mtx_lock(&dep->lnk_mtx);
-}
-
-ERTS_GLB_INLINE void
-erts_de_links_unlock(DistEntry *dep)
-{
- erts_mtx_unlock(&dep->lnk_mtx);
-}
-
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
void erts_debug_test_node_tab_delayed_delete(Sint64 millisecs);
diff --git a/erts/emulator/beam/erl_port.h b/erts/emulator/beam/erl_port.h
index 0d148ee048..2a98a6f00b 100644
--- a/erts/emulator/beam/erl_port.h
+++ b/erts/emulator/beam/erl_port.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2012-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2012-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -373,7 +373,7 @@ Eterm erts_request_io_bytes(Process *c_p);
void print_port_info(Port *, fmtfn_t, void *);
void erts_port_free(Port *);
-void erts_fire_port_monitor(Port *prt, Eterm ref);
+void erts_fire_port_monitor(Port *prt, ErtsMonitor *tmon);
int erts_port_handle_xports(Port *);
#if defined(ERTS_ENABLE_LOCK_CHECK)
@@ -887,20 +887,20 @@ struct ErtsProc2PortSigData_ {
Eterm item;
} info;
struct {
- Eterm port;
- Eterm to;
+ Eterm port_id;
+ ErtsLink *lnk;
} link;
struct {
- Eterm from;
+ Eterm port_id;
+ ErtsLink *lnk;
} unlink;
struct {
- Eterm origin; /* who receives monitor event, pid */
- Eterm name; /* either name for named monitor, or port id */
+ Eterm port_id;
+ ErtsMonitor *mon;
} monitor;
struct {
- Eterm origin; /* who is at the other end of the monitor, pid */
- Eterm name; /* port id */
- Uint32 ref[ERTS_MAX_REF_NUMBERS]; /* box contents of a ref */
+ Eterm port_id;
+ ErtsMonitor *mon;
} demonitor;
} u;
} ;
@@ -946,7 +946,6 @@ typedef int (*ErtsProc2PortSigCallback)(Port *,
typedef enum {
ERTS_PORT_OP_BADARG,
- ERTS_PORT_OP_CALLER_EXIT,
ERTS_PORT_OP_BUSY,
ERTS_PORT_OP_BUSY_SCHEDULED,
ERTS_PORT_OP_SCHEDULED,
@@ -982,32 +981,13 @@ ErtsPortOpResult erts_port_command(Process *, int, Port *, Eterm, Eterm *);
ErtsPortOpResult erts_port_output(Process *, int, Port *, Eterm, Eterm, Eterm *);
ErtsPortOpResult erts_port_exit(Process *, int, Port *, Eterm, Eterm, Eterm *);
ErtsPortOpResult erts_port_connect(Process *, int, Port *, Eterm, Eterm, Eterm *);
-ErtsPortOpResult erts_port_link(Process *, Port *, Eterm, Eterm *);
-ErtsPortOpResult erts_port_unlink(Process *, Port *, Eterm, Eterm *);
+ErtsPortOpResult erts_port_link(Process *, Port *, ErtsLink *, Eterm *);
+ErtsPortOpResult erts_port_unlink(Process *, Port *, ErtsLink *, Eterm *);
ErtsPortOpResult erts_port_control(Process *, Port *, unsigned int, Eterm, Eterm *);
ErtsPortOpResult erts_port_call(Process *, Port *, unsigned int, Eterm, Eterm *);
ErtsPortOpResult erts_port_info(Process *, Port *, Eterm, Eterm *);
-
-/* Creates monitor between Origin and Target. Ref must be initialized to
- * a reference (ref may be rewritten to be used to serve additionally as a
- * signal id). Name is atom if user monitors port by name or NIL */
-ErtsPortOpResult erts_port_monitor(Process *origin, Port *target, Eterm name,
- Eterm *ref);
-
-typedef enum {
- /* Normal demonitor rules apply with locking and reductions bump */
- ERTS_PORT_DEMONITOR_NORMAL = 1,
- /* Relaxed demonitor rules when process is about to die, which means that
- * pid lookup won't work, locks won't work, no reductions bump. */
- ERTS_PORT_DEMONITOR_ORIGIN_ON_DEATHBED = 2,
-} ErtsDemonitorMode;
-
-/* Removes monitor between origin and target, identified by ref.
- * origin_is_dying can be 0 (false, normal locking rules and reductions bump
- * apply) or 1 (true, in case when we avoid origin locking) */
-ErtsPortOpResult erts_port_demonitor(Process *origin, ErtsDemonitorMode mode,
- Port *target, Eterm ref,
- Eterm *trap_ref);
+ErtsPortOpResult erts_port_monitor(Process *, Port *, ErtsMonitor *);
+ErtsPortOpResult erts_port_demonitor(Process *, Port *, ErtsMonitor *);
/* defined in erl_bif_port.c */
Port *erts_sig_lookup_port(Process *c_p, Eterm id_or_name);
diff --git a/erts/emulator/beam/erl_proc_sig_queue.c b/erts/emulator/beam/erl_proc_sig_queue.c
new file mode 100644
index 0000000000..1b5cbb1919
--- /dev/null
+++ b/erts/emulator/beam/erl_proc_sig_queue.c
@@ -0,0 +1,3772 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * Description: Process signal queue implementation.
+ *
+ * Author: Rickard Green
+ */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "sys.h"
+#include "global.h"
+#include "dist.h"
+#include "erl_process.h"
+#include "erl_port_task.h"
+#include "erl_trace.h"
+#include "beam_bp.h"
+#include "big.h"
+#include "erl_gc.h"
+#include "bif.h"
+#include "erl_proc_sig_queue.h"
+
+#define ERTS_SIG_REDS_CNT_FACTOR 4
+#define ERTS_PROC_SIG_TRACE_COUNT_LIMIT 200
+
+/*
+ * Note that not all signal are handled using this functionality!
+ */
+
+#define ERTS_SIG_Q_OP_MAX 9
+
+#define ERTS_SIG_Q_OP_EXIT 0
+#define ERTS_SIG_Q_OP_EXIT_LINKED 1
+#define ERTS_SIG_Q_OP_MONITOR_DOWN 2
+#define ERTS_SIG_Q_OP_MONITOR 3
+#define ERTS_SIG_Q_OP_DEMONITOR 4
+#define ERTS_SIG_Q_OP_LINK 5
+#define ERTS_SIG_Q_OP_UNLINK 6
+#define ERTS_SIG_Q_OP_GROUP_LEADER 7
+#define ERTS_SIG_Q_OP_TRACE_CHANGE_STATE 8
+#define ERTS_SIG_Q_OP_PERSISTENT_MON_MSG ERTS_SIG_Q_OP_MAX
+
+#define ERTS_SIG_Q_TYPE_MAX (ERTS_MON_LNK_TYPE_MAX + 5)
+
+#define ERTS_SIG_Q_TYPE_UNDEFINED \
+ (ERTS_MON_LNK_TYPE_MAX + 1)
+#define ERTS_SIG_Q_TYPE_DIST_LINK \
+ (ERTS_MON_LNK_TYPE_MAX + 2)
+#define ERTS_SIG_Q_TYPE_GEN_EXIT \
+ (ERTS_MON_LNK_TYPE_MAX + 3)
+#define ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR \
+ (ERTS_MON_LNK_TYPE_MAX + 4)
+#define ERTS_SIG_Q_TYPE_ADJUST_TRACE_INFO \
+ ERTS_SIG_Q_TYPE_MAX
+
+
+#define ERTS_SIG_Q_OP_BITS 8
+#define ERTS_SIG_Q_OP_SHIFT 0
+#define ERTS_SIG_Q_OP_MASK ((1 << ERTS_SIG_Q_OP_BITS) - 1)
+
+#define ERTS_SIG_Q_TYPE_BITS 8
+#define ERTS_SIG_Q_TYPE_SHIFT ERTS_SIG_Q_OP_BITS
+#define ERTS_SIG_Q_TYPE_MASK ((1 << ERTS_SIG_Q_TYPE_BITS) - 1)
+
+#define ERTS_SIG_Q_NON_X_BITS__ (_HEADER_ARITY_OFFS \
+ + ERTS_SIG_Q_OP_BITS \
+ + ERTS_SIG_Q_TYPE_BITS)
+
+#define ERTS_SIG_Q_XTRA_BITS (32 - ERTS_SIG_Q_NON_X_BITS__)
+#define ERTS_SIG_Q_XTRA_SHIFT (ERTS_SIG_Q_OP_BITS \
+ + ERTS_SIG_Q_TYPE_BITS)
+#define ERTS_SIG_Q_XTRA_MASK ((1 << ERTS_SIG_Q_XTRA_BITS) - 1)
+
+#define ERTS_PROC_SIG_OP(Tag) \
+ ((int) (_unchecked_thing_arityval((Tag)) \
+ >> ERTS_SIG_Q_OP_SHIFT) & ERTS_SIG_Q_OP_MASK)
+
+#define ERTS_PROC_SIG_TYPE(Tag) \
+ ((Uint16) (_unchecked_thing_arityval((Tag)) \
+ >> ERTS_SIG_Q_TYPE_SHIFT) & ERTS_SIG_Q_TYPE_MASK)
+
+#define ERTS_PROC_SIG_XTRA(Tag) \
+ ((Uint32) (_unchecked_thing_arityval((Tag)) \
+ >> ERTS_SIG_Q_XTRA_SHIFT) & ERTS_SIG_Q_XTRA_MASK)
+
+#define ERTS_PROC_SIG_MAKE_TAG(Op, Type, Xtra) \
+ (ASSERT(0 <= (Xtra) && (Xtra) <= ERTS_SIG_Q_XTRA_MASK), \
+ _make_header((((Type) & ERTS_SIG_Q_TYPE_MASK) \
+ << ERTS_SIG_Q_TYPE_SHIFT) \
+ | (((Op) & ERTS_SIG_Q_OP_MASK) \
+ << ERTS_SIG_Q_OP_SHIFT) \
+ | (((Xtra) & ERTS_SIG_Q_XTRA_MASK) \
+ << ERTS_SIG_Q_XTRA_SHIFT), \
+ _TAG_HEADER_EXTERNAL_PID))
+
+Process *ERTS_WRITE_UNLIKELY(erts_dirty_process_signal_handler);
+Process *ERTS_WRITE_UNLIKELY(erts_dirty_process_signal_handler_high);
+Process *ERTS_WRITE_UNLIKELY(erts_dirty_process_signal_handler_max);
+
+void
+erts_proc_sig_queue_init(void)
+{
+ ERTS_CT_ASSERT(ERTS_SIG_Q_OP_MASK >= ERTS_SIG_Q_OP_MAX);
+ ERTS_CT_ASSERT(ERTS_SIG_Q_TYPE_MASK >= ERTS_SIG_Q_TYPE_MAX);
+}
+
+typedef struct {
+ int active;
+ int procs;
+ struct {
+ int active;
+#if defined(USE_VM_PROBES)
+ int vm_probes;
+ char receiver_name[DTRACE_TERM_BUF_SIZE];
+#endif
+ int receive_trace;
+ int bp_ix;
+ ErtsMessage **next;
+ ErtsTracingEvent *event;
+ } messages;
+} ErtsSigRecvTracing;
+
+typedef struct {
+ Eterm message;
+ Eterm from;
+ Eterm reason;
+ union {
+ Eterm ref;
+ int normal_kills;
+ } u;
+} ErtsExitSignalData;
+
+typedef struct {
+ Eterm message;
+ Eterm key;
+} ErtsPersistMonMsg;
+
+typedef struct {
+ ErtsSignalCommon common;
+ Eterm local; /* internal pid (immediate) */
+ Eterm remote; /* external pid (heap for it follow) */
+ Eterm heap[EXTERNAL_THING_HEAD_SIZE + 1];
+} ErtsSigDistLinkOp;
+
+typedef struct {
+ ErtsSignalCommon common;
+ Uint flags_on;
+ Uint flags_off;
+ Eterm tracer;
+} ErtsSigTraceInfo;
+
+#define ERTS_SIG_GL_FLG_ACTIVE (((erts_aint_t) 1) << 0)
+#define ERTS_SIG_GL_FLG_RECEIVER (((erts_aint_t) 1) << 1)
+#define ERTS_SIG_GL_FLG_SENDER (((erts_aint_t) 1) << 2)
+
+typedef struct {
+ ErtsSignalCommon common;
+ erts_atomic_t flags;
+ Eterm group_leader;
+ Eterm reply_to;
+ Eterm ref;
+ ErlOffHeap oh;
+ Eterm heap[1];
+} ErtsSigGroupLeader;
+
+static int handle_msg_tracing(Process *c_p,
+ ErtsSigRecvTracing *tracing,
+ ErtsMessage ***next_nm_sig);
+static int handle_trace_change_state(Process *c_p,
+ ErtsSigRecvTracing *tracing,
+ Uint16 type,
+ ErtsMessage *sig,
+ ErtsMessage ***next_nm_sig);
+static void getting_unlinked(Process *c_p, Eterm unlinker);
+static void getting_linked(Process *c_p, Eterm linker);
+static void group_leader_reply(Process *c_p, Eterm to,
+ Eterm ref, int success);
+static int stretch_limit(Process *c_p, ErtsSigRecvTracing *tp,
+ int abs_lim, int *limp);
+
+#ifdef ERTS_PROC_SIG_HARD_DEBUG
+#define ERTS_PROC_SIG_HDBG_PRIV_CHKQ(P, T, NMN) \
+ do { \
+ ErtsMessage **nm_next__ = *(NMN); \
+ ErtsMessage **nm_last__ = (P)->sig_qs.nmsigs.last; \
+ if (!nm_next__ || !*nm_next__) { \
+ nm_next__ = NULL; \
+ nm_last__ = NULL; \
+ } \
+ proc_sig_hdbg_check_queue((P), \
+ 1, \
+ &(P)->sig_qs.cont, \
+ (P)->sig_qs.cont_last, \
+ nm_next__, \
+ nm_last__, \
+ (T), \
+ NULL, \
+ ERTS_PSFLG_FREE); \
+ } while (0);
+static Sint
+proc_sig_hdbg_check_queue(Process *c_p,
+ int privq,
+ ErtsMessage **sig_next,
+ ErtsMessage **sig_last,
+ ErtsMessage **sig_nm_next,
+ ErtsMessage **sig_nm_last,
+ ErtsSigRecvTracing *tracing,
+ int *found_saved_last_p,
+ erts_aint32_t sig_psflg);
+#else
+#define ERTS_PROC_SIG_HDBG_PRIV_CHKQ(P, T, NMN)
+#endif
+
+typedef struct {
+ ErtsSignalCommon common;
+ Eterm ref;
+ Eterm heap[1];
+} ErtsSigDistProcDemonitor;
+
+static void
+destroy_dist_proc_demonitor(ErtsSigDistProcDemonitor *dmon)
+{
+ Eterm ref = dmon->ref;
+ if (is_external(ref)) {
+ ExternalThing *etp = external_thing_ptr(ref);
+ erts_deref_node_entry(etp->node);
+ }
+ erts_free(ERTS_ALC_T_DIST_DEMONITOR, dmon);
+}
+
+static ERTS_INLINE ErtsSigDistLinkOp *
+make_sig_dist_link_op(int op, Eterm local, Eterm remote)
+{
+ Eterm *hp;
+ ErlOffHeap oh = {0};
+ ErtsSigDistLinkOp *sdlnk = erts_alloc(ERTS_ALC_T_SIG_DATA,
+ sizeof(ErtsSigDistLinkOp));
+ ASSERT(is_internal_pid(local));
+ ASSERT(is_external_pid(remote));
+
+ hp = &sdlnk->heap[0];
+
+ sdlnk->common.tag = ERTS_PROC_SIG_MAKE_TAG(op,
+ ERTS_SIG_Q_TYPE_DIST_LINK,
+ 0);
+ sdlnk->local = local;
+ sdlnk->remote = STORE_NC(&hp, &oh, remote);
+
+ ASSERT(&sdlnk->heap[0] < hp);
+ ASSERT(hp <= &sdlnk->heap[0] + sizeof(sdlnk->heap)/sizeof(sdlnk->heap[0]));
+ ASSERT(boxed_val(sdlnk->remote) == &sdlnk->heap[0]);
+
+ return sdlnk;
+}
+
+static ERTS_INLINE void
+destroy_sig_dist_link_op(ErtsSigDistLinkOp *sdlnk)
+{
+ ASSERT(is_external_pid(sdlnk->remote));
+ ASSERT(boxed_val(sdlnk->remote) == &sdlnk->heap[0]);
+ erts_deref_node_entry(((ExternalThing *) &sdlnk->heap[0])->node);
+ erts_free(ERTS_ALC_T_SIG_DATA, sdlnk);
+}
+
+static ERTS_INLINE ErtsExitSignalData *
+get_exit_signal_data(ErtsMessage *xsig)
+{
+ ASSERT(ERTS_SIG_IS_NON_MSG(xsig));
+ ASSERT((ERTS_PROC_SIG_OP(((ErtsSignal *) xsig)->common.tag)
+ == ERTS_SIG_Q_OP_EXIT)
+ || (ERTS_PROC_SIG_OP(((ErtsSignal *) xsig)->common.tag)
+ == ERTS_SIG_Q_OP_EXIT_LINKED)
+ || (ERTS_PROC_SIG_OP(((ErtsSignal *) xsig)->common.tag)
+ == ERTS_SIG_Q_OP_MONITOR_DOWN));
+ ASSERT(xsig->hfrag.alloc_size > xsig->hfrag.used_size);
+ ASSERT((xsig->hfrag.alloc_size - xsig->hfrag.used_size)*sizeof(UWord)
+ >= sizeof(ErtsExitSignalData));
+ return (ErtsExitSignalData *) (char *) (&xsig->hfrag.mem[0]
+ + xsig->hfrag.used_size);
+}
+
+static ERTS_INLINE void
+destroy_trace_info(ErtsSigTraceInfo *ti)
+{
+ if (is_value(ti->tracer))
+ erts_tracer_update(&ti->tracer, NIL);
+ erts_free(ERTS_ALC_T_SIG_DATA, ti);
+}
+
+static void
+destroy_sig_group_leader(ErtsSigGroupLeader *sgl)
+{
+ erts_cleanup_offheap(&sgl->oh);
+ erts_free(ERTS_ALC_T_SIG_DATA, sgl);
+}
+
+static ERTS_INLINE void
+sig_enqueue_trace(Process *c_p, ErtsMessage *sig, int op,
+ Process *rp, ErtsMessage **first,
+ ErtsMessage **last, ErtsMessage ***last_next)
+{
+ switch (op) {
+ case ERTS_SIG_Q_OP_LINK:
+ if (c_p
+ && ((!!IS_TRACED(c_p))
+ & (ERTS_TRACE_FLAGS(c_p) & (F_TRACE_SOL
+ | F_TRACE_SOL1)))) {
+ ErtsSigTraceInfo *ti;
+ Eterm tag;
+ /*
+ * Set on link enabled.
+ *
+ * Prepend a trace-change-state signal before the
+ * link signal...
+ */
+
+ tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_TRACE_CHANGE_STATE,
+ ERTS_SIG_Q_TYPE_ADJUST_TRACE_INFO,
+ 0);
+ ti = erts_alloc(ERTS_ALC_T_SIG_DATA, sizeof(ErtsSigTraceInfo));
+ ti->common.next = *last;
+ ti->common.specific.next = &ti->common.next;
+ ti->common.tag = tag;
+ ti->flags_on = ERTS_TRACE_FLAGS(c_p) & TRACEE_FLAGS;
+ if (!(ti->flags_on & F_TRACE_SOL1))
+ ti->flags_off = 0;
+ else {
+ ti->flags_off = F_TRACE_SOL1|F_TRACE_SOL;
+ erts_proc_lock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+ ERTS_TRACE_FLAGS(c_p) &= ~(F_TRACE_SOL1|F_TRACE_SOL);
+ erts_proc_unlock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+ }
+ erts_tracer_update(&ti->tracer, ERTS_TRACER(c_p));
+ *first = (ErtsMessage *) ti;
+ *last_next = &ti->common.next;
+ }
+ break;
+
+#ifdef USE_VM_PROBES
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED: {
+ ErtsExitSignalData *xsigd = get_exit_signal_data(sig);
+ if(DTRACE_ENABLED(process_exit_signal) && is_pid(xsigd->from)) {
+ DTRACE_CHARBUF(sender_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(receiver_str, DTRACE_TERM_BUF_SIZE);
+ DTRACE_CHARBUF(reason_buf, DTRACE_TERM_BUF_SIZE);
+
+ dtrace_pid_str(from, sender_str);
+ dtrace_proc_str(rp, receiver_str);
+ erts_snprintf(reason_buf, sizeof(DTRACE_CHARBUF_NAME(reason_buf)) - 1, "%T", reason);
+ DTRACE3(process_exit_signal, sender_str, receiver_str, reason_buf);
+ }
+ break;
+ }
+#endif
+
+ default:
+ break;
+ }
+}
+
+static void
+sig_enqueue_trace_cleanup(ErtsMessage *first, ErtsSignal *sig, ErtsMessage *last)
+{
+ ErtsMessage *tmp;
+
+ /* The usual case; no tracing signals... */
+ if (sig == (ErtsSignal *) first && sig == (ErtsSignal *) last) {
+ sig->common.next = NULL;
+ return;
+ }
+
+ /* Got trace signals to clean up... */
+
+ tmp = first;
+
+ while (tmp) {
+ ErtsMessage *tmp_free = tmp;
+ tmp = tmp->next;
+ if (sig != (ErtsSignal *) tmp_free) {
+ switch (ERTS_PROC_SIG_OP(((ErtsSignal *) tmp_free)->common.tag)) {
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
+ destroy_trace_info((ErtsSigTraceInfo *) tmp_free);
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected signal op");
+ break;
+ }
+ }
+ }
+}
+
+static ERTS_INLINE erts_aint32_t
+enqueue_signals(Process *rp, ErtsMessage *first,
+ ErtsMessage *last, ErtsMessage **last_next,
+ erts_aint32_t in_state)
+{
+ erts_aint32_t state = in_state;
+ ErtsMessage **this = rp->sig_inq.last;
+
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE(rp);
+
+ ASSERT(!*this);
+ *this = first;
+ rp->sig_inq.last = &last->next;
+
+ if (!rp->sig_inq.nmsigs.next) {
+ ASSERT(!rp->sig_inq.nmsigs.last);
+ rp->sig_inq.nmsigs.next = this;
+ state = erts_atomic32_read_bor_nob(&rp->state,
+ ERTS_PSFLG_SIG_IN_Q);
+ ASSERT(!(state & ERTS_PSFLG_SIG_IN_Q));
+ }
+ else {
+ ErtsSignal *sig;
+ ASSERT(rp->sig_inq.nmsigs.last);
+
+ sig = (ErtsSignal *) *rp->sig_inq.nmsigs.last;
+
+ ASSERT(sig && !sig->common.specific.next);
+ ASSERT(state & ERTS_PSFLG_SIG_IN_Q);
+ sig->common.specific.next = this;
+ }
+
+ if (last_next) {
+ ASSERT(first != last);
+ rp->sig_inq.nmsigs.last = last_next;
+ }
+ else {
+ ASSERT(first == last);
+ rp->sig_inq.nmsigs.last = this;
+ }
+
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE(rp);
+
+ return state;
+}
+
+static ERTS_INLINE void
+ensure_dirty_proc_handled(Eterm pid,
+ erts_aint32_t state,
+ erts_aint32_t prio)
+{
+ if (state & (ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS)) {
+ Eterm *hp;
+ ErtsMessage *mp;
+ Process *sig_handler;
+
+ if (prio < 0)
+ prio = (int) ERTS_PSFLGS_GET_USR_PRIO(state);
+
+ switch (prio) {
+ case PRIORITY_MAX:
+ sig_handler = erts_dirty_process_signal_handler_max;
+ break;
+ case PRIORITY_HIGH:
+ sig_handler = erts_dirty_process_signal_handler_high;
+ break;
+ default:
+ sig_handler = erts_dirty_process_signal_handler;
+ break;
+ }
+
+ /* Make sure signals are handled... */
+ mp = erts_alloc_message(0, &hp);
+ erts_queue_message(sig_handler, 0, mp, pid, am_system);
+ }
+}
+
+static int
+proc_queue_signal(Process *c_p, Eterm pid, ErtsSignal *sig, int op)
+{
+ int res;
+ Process *rp;
+ ErtsMessage *first, *last, **last_next;
+ ErtsSchedulerData *esdp = erts_get_scheduler_data();
+ int is_normal_sched = !!esdp && esdp->type == ERTS_SCHED_NORMAL;
+ erts_aint32_t state;
+
+ if (is_normal_sched)
+ rp = erts_proc_lookup_raw(pid);
+ else
+ rp = erts_proc_lookup_raw_inc_refc(pid);
+
+ if (!rp)
+ return 0;
+
+ sig->common.specific.next = NULL;
+ first = last = (ErtsMessage *) sig;
+ last_next = NULL;
+
+ /* may add signals before and/or after sig */
+ sig_enqueue_trace(c_p, first, op, rp,
+ &first, &last, &last_next);
+
+ last->next = NULL;
+
+ erts_proc_lock(rp, ERTS_PROC_LOCK_MSGQ);
+
+ state = erts_atomic32_read_nob(&rp->state);
+
+ if (ERTS_PSFLG_FREE & state)
+ res = 0;
+ else {
+ state = enqueue_signals(rp, first, last, last_next, state);
+ res = !0;
+ }
+
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MSGQ);
+
+ if (res == 0)
+ sig_enqueue_trace_cleanup(first, sig, last);
+
+ if (!(state & (ERTS_PSFLG_EXITING
+ | ERTS_PSFLG_ACTIVE_SYS
+ | ERTS_PSFLG_SIG_IN_Q))) {
+ /* Schedule process... */
+ state = erts_proc_sys_schedule(rp, state, 0);
+ }
+
+ ensure_dirty_proc_handled(rp->common.id, state, -1);
+
+ if (!is_normal_sched)
+ erts_proc_dec_refc(rp);
+
+ return res;
+}
+
+void
+erts_proc_sig_fetch(Process *proc)
+{
+#ifdef ERTS_PROC_SIG_HARD_DEBUG
+ ErtsSignalPrivQueues sig_qs = proc->sig_qs;
+ ErtsSignalInQueue sig_inq = proc->sig_inq;
+#endif
+
+ ERTS_LC_ASSERT(erts_thr_progress_is_blocking()
+ || ERTS_PROC_IS_EXITING(proc)
+ || ((erts_proc_lc_my_proc_locks(proc)
+ & (ERTS_PROC_LOCK_MAIN
+ | ERTS_PROC_LOCK_MSGQ))
+ == (ERTS_PROC_LOCK_MAIN
+ | ERTS_PROC_LOCK_MSGQ)));
+
+ if (!proc->sig_inq.first) {
+ ASSERT(proc->sig_inq.last == &proc->sig_inq.first);
+ ASSERT(proc->sig_inq.len == 0);
+ ASSERT(!proc->sig_inq.nmsigs.next);
+ ASSERT(!proc->sig_inq.nmsigs.last);
+ return;
+ }
+
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE(proc);
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(proc);
+
+ if (!proc->sig_inq.nmsigs.next) {
+ ASSERT(!(ERTS_PSFLG_SIG_IN_Q
+ & erts_atomic32_read_nob(&proc->state)));
+ ASSERT(!proc->sig_inq.nmsigs.last);
+
+ if (proc->sig_qs.cont || ERTS_MSG_RECV_TRACED(proc)) {
+ *proc->sig_qs.cont_last = proc->sig_inq.first;
+ proc->sig_qs.cont_last = proc->sig_inq.last;
+ }
+ else {
+ *proc->sig_qs.last = proc->sig_inq.first;
+ proc->sig_qs.last = proc->sig_inq.last;
+ }
+ }
+ else {
+#ifdef DEBUG
+ erts_aint32_t s;
+#endif
+ ASSERT(proc->sig_inq.nmsigs.last);
+ if (!proc->sig_qs.nmsigs.last) {
+ ASSERT(!proc->sig_qs.nmsigs.next);
+ if (proc->sig_inq.nmsigs.next == &proc->sig_inq.first)
+ proc->sig_qs.nmsigs.next = proc->sig_qs.cont_last;
+ else
+ proc->sig_qs.nmsigs.next = proc->sig_inq.nmsigs.next;
+
+#ifdef DEBUG
+ s =
+#endif
+ erts_atomic32_read_bset_nob(&proc->state,
+ (ERTS_PSFLG_SIG_Q
+ | ERTS_PSFLG_SIG_IN_Q),
+ ERTS_PSFLG_SIG_Q);
+
+ ASSERT((s & (ERTS_PSFLG_SIG_Q|ERTS_PSFLG_SIG_IN_Q))
+ == ERTS_PSFLG_SIG_IN_Q);
+ }
+ else {
+ ErtsSignal *sig;
+ ASSERT(proc->sig_qs.nmsigs.next);
+ sig = ((ErtsSignal *) *proc->sig_qs.nmsigs.last);
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+ ASSERT(!sig->common.specific.next);
+ if (proc->sig_inq.nmsigs.next == &proc->sig_inq.first)
+ sig->common.specific.next = proc->sig_qs.cont_last;
+ else
+ sig->common.specific.next = proc->sig_inq.nmsigs.next;
+
+#ifdef DEBUG
+ s =
+#endif
+ erts_atomic32_read_band_nob(&proc->state,
+ ~ERTS_PSFLG_SIG_IN_Q);
+
+ ASSERT((s & (ERTS_PSFLG_SIG_Q|ERTS_PSFLG_SIG_IN_Q))
+ == (ERTS_PSFLG_SIG_Q|ERTS_PSFLG_SIG_IN_Q));
+ }
+ if (proc->sig_inq.nmsigs.last == &proc->sig_inq.first)
+ proc->sig_qs.nmsigs.last = proc->sig_qs.cont_last;
+ else
+ proc->sig_qs.nmsigs.last = proc->sig_inq.nmsigs.last;
+ proc->sig_inq.nmsigs.next = NULL;
+ proc->sig_inq.nmsigs.last = NULL;
+
+ *proc->sig_qs.cont_last = proc->sig_inq.first;
+ proc->sig_qs.cont_last = proc->sig_inq.last;
+ }
+
+ proc->sig_qs.len += proc->sig_inq.len;
+
+ proc->sig_inq.first = NULL;
+ proc->sig_inq.last = &proc->sig_inq.first;
+ proc->sig_inq.len = 0;
+
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(proc);
+}
+
+void do_seq_trace_output(Eterm to, Eterm token, Eterm msg);
+
+static void
+send_gen_exit_signal(Process *c_p, Eterm from_tag,
+ Eterm from, Eterm to,
+ Sint16 op, Eterm reason, Eterm ref,
+ Eterm token, int normal_kills)
+{
+ ErtsExitSignalData *xsigd;
+ Eterm *hp, *start_hp, s_reason, s_ref, s_message, s_token, s_from;
+ ErtsMessage *mp;
+ ErlHeapFragment *hfrag;
+ ErlOffHeap *ohp;
+ Uint hsz, from_sz, reason_sz, ref_sz, token_sz;
+ int seq_trace;
+#ifdef USE_VM_PROBES
+ Eterm s_utag, utag;
+ Uint utag_sz;
+#endif
+
+ ASSERT(is_immed(from_tag));
+
+ hsz = sizeof(ErtsExitSignalData)/sizeof(Uint);
+
+ seq_trace = c_p && have_seqtrace(token);
+ if (seq_trace)
+ seq_trace_update_send(c_p);
+
+#ifdef USE_VM_PROBES
+ if (c_p && token != NIL && (DT_UTAG_FLAGS(c_p) & DT_UTAG_SPREADING)) {
+ utag_sz = size_object(DT_UTAG(c_p));
+ utag = DT_UTAG(c_p);
+ }
+ else if (token == am_have_dt_utag) {
+ utag_sz = 0;
+ utag = token = NIL;
+ }
+ hsz += utag_sz;
+#endif
+
+ token_sz = is_immed(token) ? 0 : size_object(token);
+ hsz += token_sz;
+
+ from_sz = is_immed(from) ? 0 : size_object(from);
+ hsz += from_sz;
+
+ reason_sz = is_immed(reason) ? 0 : size_object(reason);
+ hsz += reason_sz;
+
+ switch (op) {
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED: {
+ /* {'EXIT', From, Reason} */
+ hsz += 4; /* 3-tuple */
+ ref_sz = 0;
+ break;
+ }
+ case ERTS_SIG_Q_OP_MONITOR_DOWN: {
+ /* {'DOWN', Ref, process, From, Reason} */
+ hsz += 6; /* 5-tuple */
+ ref_sz = NC_HEAP_SIZE(ref);
+ hsz += ref_sz;
+ break;
+ }
+ default:
+ ERTS_INTERNAL_ERROR("Invalid exit signal op");
+ break;
+ }
+
+ /*
+ * Allocate message combined with heap fragment...
+ */
+ mp = erts_alloc_message(hsz, &hp);
+ hfrag = &mp->hfrag;
+ mp->next = NULL;
+ ohp = &hfrag->off_heap;
+ start_hp = hp;
+
+ s_token = (is_immed(token)
+ ? token
+ : copy_struct(token, token_sz, &hp, ohp));
+
+ s_reason = (is_immed(reason)
+ ? reason
+ : copy_struct(reason, reason_sz, &hp, ohp));
+
+ s_from = (is_immed(from)
+ ? from
+ : copy_struct(from, from_sz, &hp, ohp));
+
+ if (!ref_sz)
+ s_ref = NIL;
+ else
+ s_ref = STORE_NC(&hp, ohp, ref);
+
+ switch (op) {
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+ /* {'EXIT', From, Reason} */
+ s_message = TUPLE3(hp, am_EXIT, s_from, s_reason);
+ hp += 4;
+ break;
+ case ERTS_SIG_Q_OP_MONITOR_DOWN:
+ /* {'DOWN', Ref, process, From, Reason} */
+ s_message = TUPLE5(hp, am_DOWN, s_ref, am_process, s_from, s_reason);
+ hp += 6;
+ break;
+ }
+
+#ifdef USE_VM_PROBES
+ s_utag = (is_immed(utag)
+ ? utag
+ : copy_struct(utag, utag_sz, &hp, ohp));
+ ERL_MESSAGE_DT_UTAG(mp) = utag;
+#endif
+
+ ERL_MESSAGE_TERM(mp) = ERTS_PROC_SIG_MAKE_TAG(op,
+ ERTS_SIG_Q_TYPE_GEN_EXIT,
+ 0);
+ ERL_MESSAGE_TOKEN(mp) = s_token;
+ ERL_MESSAGE_FROM(mp) = from_tag; /* immediate... */
+
+ hfrag->used_size = hp - start_hp;
+
+ xsigd = (ErtsExitSignalData *) (char *) hp;
+
+ xsigd->message = s_message;
+ xsigd->from = s_from;
+ xsigd->reason = s_reason;
+ if (is_nil(s_ref))
+ xsigd->u.normal_kills = normal_kills;
+ else {
+ ASSERT(is_ref(s_ref));
+ xsigd->u.ref = s_ref;
+ }
+
+ if (seq_trace)
+ do_seq_trace_output(to, s_token, s_message);
+
+ if (!proc_queue_signal(c_p, to, (ErtsSignal *) mp, op)) {
+ mp->next = NULL;
+ erts_cleanup_messages(mp);
+ }
+}
+
+void
+do_seq_trace_output(Eterm to, Eterm token, Eterm msg)
+{
+ /*
+ * We could do this when enqueuing the signal and avoid some
+ * locking. However, the enqueuing code would then always
+ * have the penalty of this seq-tracing code which we do not
+ * want...
+ */
+ ErtsSchedulerData *esdp = erts_get_scheduler_data();
+ int is_normal_sched = !!esdp && esdp->type == ERTS_SCHED_NORMAL;
+ Process *rp;
+
+ if (is_normal_sched)
+ rp = erts_proc_lookup_raw(to);
+ else
+ rp = erts_proc_lookup_raw_inc_refc(to);
+
+ erts_proc_lock(rp, ERTS_PROC_LOCK_MSGQ);
+
+ if (!ERTS_PROC_IS_EXITING(rp))
+ seq_trace_output(token, msg, SEQ_TRACE_SEND, to, rp);
+
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MSGQ);
+
+ if (!is_normal_sched)
+ erts_proc_dec_refc(rp);
+}
+
+void
+erts_proc_sig_send_persistent_monitor_msg(Uint16 type, Eterm key,
+ Eterm from, Eterm to,
+ Eterm msg, Uint msg_sz)
+{
+ ErtsPersistMonMsg *prst_mon;
+ ErtsMessage *mp;
+ ErlHeapFragment *hfrag;
+ Eterm *hp, *start_hp, message;
+ ErlOffHeap *ohp;
+ Uint hsz = sizeof(ErtsPersistMonMsg) + msg_sz;
+
+ /*
+ * Allocate message combined with heap fragment...
+ */
+ mp = erts_alloc_message(hsz, &hp);
+ hfrag = &mp->hfrag;
+ mp->next = NULL;
+ ohp = &hfrag->off_heap;
+ start_hp = hp;
+
+ ASSERT(msg_sz == size_object(msg));
+ message = copy_struct(msg, msg_sz, &hp, ohp);
+ hfrag->used_size = hp - start_hp;
+
+ prst_mon = (ErtsPersistMonMsg *) (char *) hp;
+ prst_mon->message = message;
+
+ switch (type) {
+ case ERTS_MON_TYPE_NODES:
+ ASSERT(is_small(key));
+ prst_mon->key = key;
+ break;
+
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ ASSERT(is_internal_ref(key));
+ ASSERT(is_tuple_arity(message, 5));
+
+ prst_mon->key = tuple_val(message)[2];
+
+ ASSERT(eq(prst_mon->key, key));
+ break;
+
+ default:
+ ERTS_INTERNAL_ERROR("Invalid persistent monitor type");
+ prst_mon->key = key;
+ break;
+ }
+
+ ASSERT(is_immed(from));
+
+ ERL_MESSAGE_TERM(mp) = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_PERSISTENT_MON_MSG,
+ type, 0);
+ ERL_MESSAGE_FROM(mp) = from;
+ ERL_MESSAGE_TOKEN(mp) = NIL;
+#ifdef USE_VM_PROBES
+ ERL_MESSAGE_DT_UTAG(mp) = NIL;
+#endif
+
+ if (!proc_queue_signal(NULL, to, (ErtsSignal *) mp,
+ ERTS_SIG_Q_OP_PERSISTENT_MON_MSG)) {
+ mp->next = NULL;
+ erts_cleanup_messages(mp);
+ }
+}
+
+static ERTS_INLINE Eterm
+get_persist_mon_msg(ErtsMessage *sig, Eterm *msg)
+{
+ ErtsPersistMonMsg *prst_mon;
+ prst_mon = ((ErtsPersistMonMsg *)
+ (char *) (&sig->hfrag.mem[0]
+ + sig->hfrag.used_size));
+ *msg = prst_mon->message;
+ return prst_mon->key;
+}
+
+void
+erts_proc_sig_send_exit(Process *c_p, Eterm from, Eterm to,
+ Eterm reason, Eterm token,
+ int normal_kills)
+{
+ Eterm from_tag;
+ ASSERT(!c_p || c_p->common.id == from);
+ if (is_immed(from)) {
+ ASSERT(is_internal_pid(from) || is_internal_port(from));
+ from_tag = from;
+ }
+ else {
+ DistEntry *dep;
+ ASSERT(is_external_pid(from));
+ dep = external_pid_dist_entry(from);
+ from_tag = dep->sysname;
+ }
+ send_gen_exit_signal(c_p, from_tag, from, to, ERTS_SIG_Q_OP_EXIT,
+ reason, NIL, token, normal_kills);
+}
+
+void
+erts_proc_sig_send_link_exit(Process *c_p, Eterm from, ErtsLink *lnk,
+ Eterm reason, Eterm token)
+{
+ Eterm to;
+ ASSERT(!c_p || c_p->common.id == from);
+ ASSERT(lnk);
+ to = lnk->other.item;
+ if (is_not_immed(reason) || is_not_nil(token)) {
+ ASSERT(is_internal_pid(from) || is_internal_port(from));
+ send_gen_exit_signal(c_p, from, from, to, ERTS_SIG_Q_OP_EXIT_LINKED,
+ reason, NIL, token, 0);
+ }
+ else {
+ /* Pass signal using old link structure... */
+ ErtsSignal *sig = (ErtsSignal *) lnk;
+ lnk->other.item = reason; /* pass reason via this other.item */
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_EXIT_LINKED,
+ lnk->type, 0);
+ if (proc_queue_signal(c_p, to, sig, ERTS_SIG_Q_OP_EXIT_LINKED))
+ return; /* receiver will destroy lnk structure */
+ }
+ if (lnk)
+ erts_link_release(lnk);
+}
+
+int
+erts_proc_sig_send_link(Process *c_p, Eterm to, ErtsLink *lnk)
+{
+ ErtsSignal *sig;
+ Uint16 type = lnk->type;
+
+ ASSERT(!c_p || c_p->common.id == lnk->other.item);
+ ASSERT(lnk);
+ ASSERT(is_internal_pid(to));
+
+ sig = (ErtsSignal *) lnk;
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_LINK,
+ type, 0);
+
+ return proc_queue_signal(c_p, to, sig, ERTS_SIG_Q_OP_LINK);
+}
+
+void
+erts_proc_sig_send_unlink(Process *c_p, ErtsLink *lnk)
+{
+ ErtsSignal *sig;
+ Eterm to;
+
+ ASSERT(lnk);
+
+ sig = (ErtsSignal *) lnk;
+ to = lnk->other.item;
+
+ ASSERT(is_internal_pid(to));
+
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_UNLINK,
+ lnk->type, 0);
+
+ if (!proc_queue_signal(c_p, to, sig, ERTS_SIG_Q_OP_UNLINK))
+ erts_link_release(lnk);
+}
+
+void
+erts_proc_sig_send_dist_link_exit(DistEntry *dep,
+ Eterm from, Eterm to,
+ Eterm reason, Eterm token)
+{
+ send_gen_exit_signal(NULL, dep->sysname, from, to, ERTS_SIG_Q_OP_EXIT_LINKED,
+ reason, NIL, token, 0);
+}
+
+void
+erts_proc_sig_send_dist_unlink(DistEntry *dep, Eterm from, Eterm to)
+{
+ ErtsSignal *sig;
+
+ ASSERT(is_internal_pid(to));
+ ASSERT(is_external_pid(from));
+ ASSERT(dep == external_pid_dist_entry(from));
+
+ sig = (ErtsSignal *) make_sig_dist_link_op(ERTS_SIG_Q_OP_UNLINK,
+ to, from);
+
+ if (!proc_queue_signal(NULL, to, sig, ERTS_SIG_Q_OP_UNLINK))
+ destroy_sig_dist_link_op((ErtsSigDistLinkOp *) sig);
+}
+
+void
+erts_proc_sig_send_dist_monitor_down(DistEntry *dep, Eterm ref,
+ Eterm from, Eterm to,
+ Eterm reason)
+{
+ Eterm monitored, heap[3];
+ if (is_atom(from))
+ monitored = TUPLE2(&heap[0], from, dep->sysname);
+ else
+ monitored = from;
+ send_gen_exit_signal(NULL, dep->sysname, monitored,
+ to, ERTS_SIG_Q_OP_MONITOR_DOWN,
+ reason, ref, NIL, 0);
+}
+
+void
+erts_proc_sig_send_monitor_down(ErtsMonitor *mon, Eterm reason)
+{
+ Eterm to;
+
+ ASSERT(erts_monitor_is_target(mon));
+ ASSERT(!erts_monitor_is_in_table(mon));
+
+ to = mon->other.item;
+ ASSERT(is_internal_pid(to));
+
+ if (is_immed(reason)) {
+ /* Pass signal using old monitor structure... */
+ ErtsSignal *sig;
+
+ mon->other.item = reason; /* Pass immed reason via other.item... */
+ sig = (ErtsSignal *) mon;
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_MONITOR_DOWN,
+ mon->type, 0);
+ if (proc_queue_signal(NULL, to, sig, ERTS_SIG_Q_OP_MONITOR_DOWN))
+ return; /* receiver will destroy mon structure */
+ }
+ else {
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ Eterm from_tag, monitored, heap[3];
+
+ if (!(mon->flags & ERTS_ML_FLG_NAME)) {
+ from_tag = monitored = mdp->origin.other.item;
+ if (is_external_pid(from_tag)) {
+ DistEntry *dep = external_pid_dist_entry(from_tag);
+ from_tag = dep->sysname;
+ }
+ }
+ else {
+ ErtsMonitorDataExtended *mdep;
+ Eterm name, node;
+ mdep = (ErtsMonitorDataExtended *) mdp;
+ name = mdep->u.name;
+ ASSERT(is_atom(name));
+ if (mdep->dist) {
+ node = mdep->dist->nodename;
+ from_tag = node;
+ }
+ else {
+ node = erts_this_dist_entry->sysname;
+ from_tag = mdp->origin.other.item;
+ }
+ ASSERT(is_internal_port(from_tag)
+ || is_internal_pid(from_tag)
+ || is_atom(from_tag));
+ monitored = TUPLE2(&heap[0], name, node);
+ }
+ send_gen_exit_signal(NULL, from_tag, monitored,
+ to, ERTS_SIG_Q_OP_MONITOR_DOWN,
+ reason, mdp->ref, NIL, 0);
+ }
+ erts_monitor_release(mon);
+}
+
+void
+erts_proc_sig_send_dist_demonitor(Eterm to, Eterm ref)
+{
+ ErtsSigDistProcDemonitor *dmon;
+ ErtsSignal *sig;
+ Eterm *hp;
+ ErlOffHeap oh;
+ size_t size;
+
+ ERTS_INIT_OFF_HEAP(&oh);
+
+ ASSERT(is_internal_pid(to));
+
+ size = sizeof(ErtsSigDistProcDemonitor) - sizeof(Eterm);
+ ASSERT(is_ref(ref));
+ size += NC_HEAP_SIZE(ref)*sizeof(Eterm);
+
+ dmon = erts_alloc(ERTS_ALC_T_DIST_DEMONITOR, size);
+
+ hp = &dmon->heap[0];
+ dmon->ref = STORE_NC(&hp, &oh, ref);
+ sig = (ErtsSignal *) dmon;
+
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_DEMONITOR,
+ ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR,
+ 0);
+
+ if (!proc_queue_signal(NULL, to, sig, ERTS_SIG_Q_OP_DEMONITOR))
+ destroy_dist_proc_demonitor(dmon);
+}
+
+void
+erts_proc_sig_send_demonitor(ErtsMonitor *mon)
+{
+ ErtsSignal *sig = (ErtsSignal *) mon;
+ Uint16 type = mon->type;
+ Eterm to = mon->other.item;
+
+ ASSERT(is_internal_pid(to));
+ ASSERT(erts_monitor_is_origin(mon));
+ ASSERT(!erts_monitor_is_in_table(mon));
+
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_DEMONITOR,
+ type, 0);
+
+ if (!proc_queue_signal(NULL, to, sig, ERTS_SIG_Q_OP_DEMONITOR))
+ erts_monitor_release(mon);
+}
+
+int
+erts_proc_sig_send_monitor(ErtsMonitor *mon, Eterm to)
+{
+ ErtsSignal *sig = (ErtsSignal *) mon;
+ Uint16 type = mon->type;
+
+ ASSERT(is_internal_pid(to) || to == am_undefined);
+ ASSERT(erts_monitor_is_target(mon));
+
+ sig->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_MONITOR,
+ type, 0);
+
+ return proc_queue_signal(NULL, to, sig, ERTS_SIG_Q_OP_MONITOR);
+}
+
+void
+erts_proc_sig_send_trace_change(Eterm to, Uint on, Uint off, Eterm tracer)
+{
+ ErtsSigTraceInfo *ti;
+ Eterm tag;
+
+ ti = erts_alloc(ERTS_ALC_T_SIG_DATA, sizeof(ErtsSigTraceInfo));
+ tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_TRACE_CHANGE_STATE,
+ ERTS_SIG_Q_TYPE_ADJUST_TRACE_INFO,
+ 0);
+
+ ti->common.tag = tag;
+ ti->flags_off = off;
+ ti->flags_on = on;
+ ti->tracer = NIL;
+ if (is_not_nil(tracer))
+ erts_tracer_update(&ti->tracer, tracer);
+
+ if (!proc_queue_signal(NULL, to, (ErtsSignal *) ti,
+ ERTS_SIG_Q_OP_TRACE_CHANGE_STATE))
+ destroy_trace_info(ti);
+}
+
+void
+erts_proc_sig_send_group_leader(Process *c_p, Eterm to, Eterm gl, Eterm ref)
+{
+ int res;
+ ErtsSigGroupLeader *sgl;
+ Eterm *hp;
+ Uint gl_sz, ref_sz, size;
+ erts_aint_t init_flags = ERTS_SIG_GL_FLG_ACTIVE|ERTS_SIG_GL_FLG_RECEIVER;
+ if (c_p)
+ init_flags |= ERTS_SIG_GL_FLG_SENDER;
+
+ ASSERT(c_p ? is_internal_ref(ref) : ref == NIL);
+
+ gl_sz = is_immed(gl) ? 0 : size_object(gl);
+ ref_sz = is_immed(ref) ? 0 : size_object(ref);
+
+ size = sizeof(ErtsSigGroupLeader);
+
+ size += (gl_sz + ref_sz - 1) * sizeof(Eterm);
+
+ sgl = erts_alloc(ERTS_ALC_T_SIG_DATA, size);
+
+ erts_atomic_init_nob(&sgl->flags, init_flags);
+
+ ERTS_INIT_OFF_HEAP(&sgl->oh);
+
+ hp = &sgl->heap[0];
+
+ sgl->group_leader = is_immed(gl) ? gl : copy_struct(gl, gl_sz, &hp, &sgl->oh);
+ sgl->reply_to = c_p ? c_p->common.id : NIL;
+ sgl->ref = is_immed(ref) ? ref : copy_struct(ref, ref_sz, &hp, &sgl->oh);
+
+ sgl->common.tag = ERTS_PROC_SIG_MAKE_TAG(ERTS_SIG_Q_OP_GROUP_LEADER,
+ ERTS_SIG_Q_TYPE_UNDEFINED,
+ 0);
+
+ res = proc_queue_signal(c_p, to, (ErtsSignal *) sgl,
+ ERTS_SIG_Q_OP_GROUP_LEADER);
+
+ if (!res)
+ destroy_sig_group_leader(sgl);
+ else if (c_p) {
+ int prio_res = !0;
+ erts_aint_t flags, rm_flags = ERTS_SIG_GL_FLG_SENDER;
+ Process *rp;
+ erts_aint32_t state, my_prio, other_prio;
+
+ state = erts_atomic32_read_nob(&c_p->state);
+ my_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
+
+ rp = erts_proc_lookup_raw(to);
+ if (!rp)
+ prio_res = 0;
+ else {
+ state = erts_atomic32_read_nob(&rp->state);
+ other_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
+
+ if (other_prio > my_prio) {
+ /* Others prio is lower than mine; elevate it... */
+ prio_res = erts_sig_prio(to, my_prio);
+ if (prio_res) {
+ state = erts_atomic32_read_nob(&rp->state);
+ ensure_dirty_proc_handled(to, state, my_prio);
+ }
+ }
+ }
+ if (!prio_res)
+ rm_flags |= ERTS_SIG_GL_FLG_ACTIVE;
+
+ flags = erts_atomic_read_band_nob(&sgl->flags, ~rm_flags);
+ if (!prio_res && (flags & ERTS_SIG_GL_FLG_ACTIVE))
+ res = 0; /* We deactivated signal... */
+ if ((flags & ~rm_flags) == 0)
+ destroy_sig_group_leader(sgl);
+ }
+
+ if (!res && c_p)
+ group_leader_reply(c_p, c_p->common.id, ref, 0);
+}
+
+static ERTS_INLINE void
+adjust_tracing_state(Process *c_p, ErtsSigRecvTracing *tracing, int setup)
+{
+ if (!IS_TRACED(c_p) || (ERTS_TRACE_FLAGS(c_p) & F_SENSITIVE)) {
+ tracing->messages.active = 0;
+ tracing->messages.receive_trace = 0;
+ tracing->messages.event = NULL;
+ tracing->messages.next = NULL;
+ tracing->procs = 0;
+ tracing->active = 0;
+ }
+ else {
+ Uint flgs = ERTS_TRACE_FLAGS(c_p);
+ int procs_trace = !!(flgs & F_TRACE_PROCS);
+ int recv_trace = !!(flgs & F_TRACE_RECEIVE);
+ /* procs tracing enabled? */
+
+ tracing->procs = procs_trace;
+
+ /* message receive tracing enabled? */
+ tracing->messages.receive_trace = recv_trace;
+ if (!recv_trace)
+ tracing->messages.event = NULL;
+ else {
+ if (tracing->messages.bp_ix < 0)
+ tracing->messages.bp_ix = erts_active_bp_ix();
+ tracing->messages.event = &erts_receive_tracing[tracing->messages.bp_ix];
+ }
+ if (setup) {
+ if (recv_trace)
+ tracing->messages.next = &c_p->sig_qs.cont;
+ else
+ tracing->messages.next = NULL;
+ }
+ tracing->messages.active = recv_trace;
+ tracing->active = recv_trace | procs_trace;
+ }
+
+#if defined(USE_VM_PROBES)
+ /* vm probe message_queued enabled? */
+
+ tracing->messages.vm_probes = DTRACE_ENABLED(message_queued);
+ if (tracing->messages.vm_probes) {
+ dtrace_proc_str(c_p, tracing->messages.receiver_name);
+ tracing->messages.active = !0;
+ tracing->active = !0;
+ if (setup && !tracing->messages.next)
+ tracing->messages.next = &c_p->sig_qs.cont;
+ }
+
+#endif
+}
+
+static ERTS_INLINE void
+setup_tracing_state(Process *c_p, ErtsSigRecvTracing *tracing)
+{
+ tracing->messages.bp_ix = -1;
+ adjust_tracing_state(c_p, tracing, !0);
+}
+
+static ERTS_INLINE void
+remove_iq_sig(Process *c_p, ErtsMessage *sig, ErtsMessage **next_sig)
+{
+ /*
+ * Remove signal from inner queue.
+ */
+ ASSERT(c_p->sig_qs.cont_last != &sig->next);
+ ASSERT(c_p->sig_qs.nmsigs.next != &sig->next);
+ ASSERT(c_p->sig_qs.nmsigs.last != &sig->next);
+
+ if (c_p->sig_qs.save == &sig->next)
+ c_p->sig_qs.save = next_sig;
+ if (c_p->sig_qs.last == &sig->next)
+ c_p->sig_qs.last = next_sig;
+ if (c_p->sig_qs.saved_last == &sig->next)
+ c_p->sig_qs.saved_last = next_sig;
+
+ *next_sig = sig->next;
+}
+
+static ERTS_INLINE void
+remove_mq_sig(Process *c_p, ErtsMessage *sig,
+ ErtsMessage **next_sig, ErtsMessage ***next_nm_sig)
+{
+ /*
+ * Remove signal from middle queue.
+ */
+ ASSERT(c_p->sig_qs.save != &sig->next);
+ ASSERT(c_p->sig_qs.last != &sig->next);
+
+ if (c_p->sig_qs.cont_last == &sig->next)
+ c_p->sig_qs.cont_last = next_sig;
+ if (c_p->sig_qs.saved_last == &sig->next)
+ c_p->sig_qs.saved_last = next_sig;
+ if (*next_nm_sig == &sig->next)
+ *next_nm_sig = next_sig;
+ if (c_p->sig_qs.nmsigs.last == &sig->next)
+ c_p->sig_qs.nmsigs.last = next_sig;
+
+ *next_sig = sig->next;
+}
+
+static ERTS_INLINE void
+remove_nm_sig(Process *c_p, ErtsMessage *sig, ErtsMessage ***next_nm_sig)
+{
+ ErtsMessage **next_sig = *next_nm_sig;
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+ ASSERT(*next_sig == sig);
+ *next_nm_sig = ((ErtsSignal *) sig)->common.specific.next;
+ remove_mq_sig(c_p, sig, next_sig, next_nm_sig);
+}
+
+static ERTS_INLINE void
+convert_to_msg(Process *c_p, ErtsMessage *sig, ErtsMessage *msg,
+ ErtsMessage ***next_nm_sig)
+{
+ ErtsMessage **next_sig = *next_nm_sig;
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+ *next_nm_sig = ((ErtsSignal *) sig)->common.specific.next;
+ c_p->sig_qs.len++;
+ *next_sig = msg;
+ remove_mq_sig(c_p, sig, &msg->next, next_nm_sig);
+}
+
+static ERTS_INLINE void
+convert_to_msgs(Process *c_p, ErtsMessage *sig, Uint no_msgs,
+ ErtsMessage *first_msg, ErtsMessage *last_msg,
+ ErtsMessage ***next_nm_sig)
+{
+ ErtsMessage **next_sig = *next_nm_sig;
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+ *next_nm_sig = ((ErtsSignal *) sig)->common.specific.next;
+ c_p->sig_qs.len += no_msgs;
+ *next_sig = first_msg;
+ remove_mq_sig(c_p, sig, &last_msg->next, next_nm_sig);
+}
+
+static ERTS_INLINE void
+insert_messages(Process *c_p, ErtsMessage **next, ErtsMessage *first,
+ ErtsMessage *last, Uint no_msgs, ErtsMessage ***next_nm_sig)
+{
+ last->next = *next;
+ if (c_p->sig_qs.cont_last == next)
+ c_p->sig_qs.cont_last = &last->next;
+ if (*next_nm_sig == next)
+ *next_nm_sig = &last->next;
+ if (c_p->sig_qs.nmsigs.last == next)
+ c_p->sig_qs.nmsigs.last = &last->next;
+ c_p->sig_qs.len += no_msgs;
+ *next = first;
+}
+
+static ERTS_INLINE void
+remove_mq_m_sig(Process *c_p, ErtsMessage *sig, ErtsMessage **next_sig, ErtsMessage ***next_nm_sig)
+{
+ /* Removing message... */
+ ASSERT(!ERTS_SIG_IS_NON_MSG(sig));
+ ASSERT(c_p->sig_qs.len > 0);
+ c_p->sig_qs.len--;
+ remove_mq_sig(c_p, sig, next_sig, next_nm_sig);
+}
+
+static ERTS_INLINE void
+remove_iq_m_sig(Process *c_p, ErtsMessage *sig, ErtsMessage **next_sig)
+{
+ /* Removing message... */
+ ASSERT(!ERTS_SIG_IS_NON_MSG(sig));
+ ASSERT(c_p->sig_qs.len > 0);
+ c_p->sig_qs.len--;
+ remove_iq_sig(c_p, sig, next_sig);
+}
+
+static ERTS_INLINE void
+convert_prepared_sig_to_msg(Process *c_p, ErtsMessage *sig, Eterm msg,
+ ErtsMessage ***next_nm_sig)
+{
+ /*
+ * Everything is already there except for the reference to
+ * the message and the combined hfrag marker that needs to be
+ * restored...
+ */
+ *next_nm_sig = ((ErtsSignal *) sig)->common.specific.next;
+ sig->data.attached = ERTS_MSG_COMBINED_HFRAG;
+ ERL_MESSAGE_TERM(sig) = msg;
+ c_p->sig_qs.len++;
+}
+
+static ERTS_INLINE int
+handle_exit_signal(Process *c_p, ErtsSigRecvTracing *tracing,
+ ErtsMessage *sig, ErtsMessage ***next_nm_sig,
+ int *exited)
+{
+ ErtsMessage *conv_msg = NULL;
+ ErtsExitSignalData *xsigd = NULL;
+ ErtsLinkData *ldp;
+ ErtsLink *dlnk;
+ Eterm tag = ((ErtsSignal *) sig)->common.tag;
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+ int op = ERTS_PROC_SIG_OP(tag);
+ int destroy = 0;
+ int ignore = 0;
+ int save = 0;
+ int exit = 0;
+ int cnt = 1;
+ Eterm reason;
+ Eterm from;
+
+ if (type == ERTS_SIG_Q_TYPE_GEN_EXIT) {
+ xsigd = get_exit_signal_data(sig);
+ from = xsigd->from;
+ reason = xsigd->reason;
+ if (op != ERTS_SIG_Q_OP_EXIT_LINKED)
+ ignore = 0;
+ else {
+ ErtsLink *llnk = erts_link_tree_lookup(ERTS_P_LINKS(c_p), from);
+ if (!llnk) {
+ /* Link no longer active; ignore... */
+ ignore = !0;
+ destroy = !0;
+ ldp = NULL; /* Avoid erroneous warning... */
+ dlnk = NULL; /* Avoid erroneous warning... */
+ }
+ else {
+ ignore = 0;
+ erts_link_tree_delete(&ERTS_P_LINKS(c_p), llnk);
+ if (llnk->type != ERTS_LNK_TYPE_DIST_PROC)
+ erts_link_release(llnk);
+ else {
+ dlnk = erts_link_to_other(llnk, &ldp);
+ if (erts_link_dist_delete(dlnk))
+ erts_link_release_both(ldp);
+ else
+ erts_link_release(llnk);
+ }
+ }
+ }
+
+ if (!ignore) {
+
+ if ((op != ERTS_SIG_Q_OP_EXIT || reason != am_kill)
+ && (c_p->flags & F_TRAP_EXIT)) {
+ convert_prepared_sig_to_msg(c_p, sig,
+ xsigd->message, next_nm_sig);
+ conv_msg = sig;
+ }
+ else if (reason == am_normal && !xsigd->u.normal_kills) {
+ /* Ignore it... */
+ destroy = !0;
+ ignore = !0;
+ }
+ else {
+ /* Terminate... */
+ save = !0;
+ exit = !0;
+ if (op == ERTS_SIG_Q_OP_EXIT && reason == am_kill)
+ reason = am_killed;
+ }
+ }
+ }
+ else { /* Link exit */
+ ErtsLink *slnk = (ErtsLink *) sig;
+ ErtsLink *llnk = erts_link_to_other(slnk, &ldp);
+
+ ASSERT(type == ERTS_LNK_TYPE_PROC
+ || type == ERTS_LNK_TYPE_PORT
+ || type == ERTS_LNK_TYPE_DIST_PROC);
+
+ from = llnk->other.item;
+ reason = slnk->other.item; /* reason in other.item ... */
+ ASSERT(is_pid(from) || is_internal_port(from));
+ ASSERT(is_immed(reason));
+ ASSERT(op == ERTS_SIG_Q_OP_EXIT_LINKED);
+ dlnk = erts_link_tree_key_delete(&ERTS_P_LINKS(c_p), llnk);
+ if (!dlnk) {
+ ignore = !0; /* Link no longer active; ignore... */
+ ldp = NULL;
+ }
+ else {
+ Eterm pid;
+ ErtsMessage *mp;
+ ErtsProcLocks locks;
+ Uint hsz;
+ Eterm *hp;
+ ErlOffHeap *ohp;
+ ignore = 0;
+ if (dlnk == llnk)
+ dlnk = NULL;
+ else
+ ldp = NULL;
+
+ ASSERT(is_immed(reason));
+
+ if (!(c_p->flags & F_TRAP_EXIT)) {
+ if (reason == am_normal)
+ ignore = !0; /* Ignore it... */
+ else
+ exit = !0; /* Terminate... */
+ }
+ else {
+
+ /*
+ * Create and EXIT message and replace
+ * the original signal with the message...
+ */
+
+ locks = ERTS_PROC_LOCK_MAIN;
+
+ hsz = 4 + NC_HEAP_SIZE(from);
+
+ mp = erts_alloc_message_heap(c_p, &locks, hsz, &hp, &ohp);
+
+ if (locks != ERTS_PROC_LOCK_MAIN)
+ erts_proc_unlock(c_p, locks & ~ERTS_PROC_LOCK_MAIN);
+
+ pid = STORE_NC(&hp, ohp, from);
+
+ ERL_MESSAGE_TERM(mp) = TUPLE3(hp, am_EXIT, pid, reason);
+ ERL_MESSAGE_TOKEN(mp) = NIL;
+#ifdef USE_VM_PROBES
+ ERL_MESSAGE_DT_UTAG(mp) = NIL;
+#endif
+ if (is_immed(pid))
+ ERL_MESSAGE_FROM(mp) = pid;
+ else {
+ DistEntry *dep;
+ ASSERT(is_external_pid(pid));
+ dep = external_pid_dist_entry(pid);
+ ERL_MESSAGE_FROM(mp) = dep->sysname;
+ }
+
+ /* Replace original signal with the exit message... */
+ convert_to_msg(c_p, sig, mp, next_nm_sig);
+
+ cnt += 4;
+
+ conv_msg = mp;
+ }
+ }
+ destroy = !0;
+ }
+
+ if (ignore|exit) {
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ if (exit) {
+ if (save) {
+ sig->data.attached = ERTS_MSG_COMBINED_HFRAG;
+ ERL_MESSAGE_TERM(sig) = xsigd->message;
+ erts_save_message_in_proc(c_p, sig);
+ }
+ /* Exit process... */
+ erts_set_self_exiting(c_p, reason);
+
+ cnt++;
+ }
+ }
+
+ if (!exit) {
+ if (conv_msg)
+ erts_proc_notify_new_message(c_p, ERTS_PROC_LOCK_MAIN);
+ if (op == ERTS_SIG_Q_OP_EXIT_LINKED && tracing->procs)
+ getting_unlinked(c_p, from);
+ }
+
+ if (destroy) {
+ cnt++;
+ if (type == ERTS_SIG_Q_TYPE_GEN_EXIT) {
+ sig->next = NULL;
+ erts_cleanup_messages(sig);
+ }
+ else {
+ if (ldp)
+ erts_link_release_both(ldp);
+ else {
+ if (dlnk)
+ erts_link_release(dlnk);
+ erts_link_release((ErtsLink *) sig);
+ }
+ }
+ }
+
+ *exited = exit;
+
+ return cnt;
+}
+
+static ERTS_INLINE int
+convert_prepared_down_message(Process *c_p, ErtsMessage *sig,
+ Eterm msg, ErtsMessage ***next_nm_sig)
+{
+ convert_prepared_sig_to_msg(c_p, sig, msg, next_nm_sig);
+ erts_proc_notify_new_message(c_p, ERTS_PROC_LOCK_MAIN);
+ return 1;
+}
+
+static int
+convert_to_down_message(Process *c_p,
+ ErtsMessage *sig,
+ ErtsMonitorData *mdp,
+ Uint16 mon_type,
+ ErtsMessage ***next_nm_sig)
+{
+ /*
+ * Create a 'DOWN' message and replace the signal
+ * with it...
+ */
+ int cnt = 0;
+ Eterm node = am_undefined;
+ ErtsMessage *mp;
+ ErtsProcLocks locks;
+ Uint hsz;
+ Eterm *hp, ref, from, type, reason;
+ ErlOffHeap *ohp;
+
+ ASSERT(mdp);
+ ASSERT((mdp->origin.flags & ERTS_ML_FLGS_SAME)
+ == (mdp->target.flags & ERTS_ML_FLGS_SAME));
+
+ hsz = 6; /* 5-tuple */
+
+ if (mdp->origin.flags & ERTS_ML_FLG_NAME)
+ hsz += 3; /* reg name 2-tuple */
+ else {
+ ASSERT(is_pid(mdp->origin.other.item)
+ || is_internal_port(mdp->origin.other.item));
+ hsz += NC_HEAP_SIZE(mdp->origin.other.item);
+ }
+
+ ASSERT(is_ref(mdp->ref));
+ hsz += NC_HEAP_SIZE(mdp->ref);
+
+ locks = ERTS_PROC_LOCK_MAIN;
+
+ /* reason is mdp->target.other.item */
+ reason = mdp->target.other.item;
+ ASSERT(is_immed(reason));
+
+ mp = erts_alloc_message_heap(c_p, &locks, hsz, &hp, &ohp);
+
+ if (locks != ERTS_PROC_LOCK_MAIN)
+ erts_proc_unlock(c_p, locks & ~ERTS_PROC_LOCK_MAIN);
+
+ cnt += 4;
+
+ ref = STORE_NC(&hp, ohp, mdp->ref);
+
+ if (!(mdp->origin.flags & ERTS_ML_FLG_NAME)) {
+ from = STORE_NC(&hp, ohp, mdp->origin.other.item);
+ }
+ else {
+ ErtsMonitorDataExtended *mdep;
+ ASSERT(mdp->origin.flags & ERTS_ML_FLG_EXTENDED);
+ mdep = (ErtsMonitorDataExtended *) mdp;
+ ASSERT(is_atom(mdep->u.name));
+ if (mdep->dist)
+ node = mdep->dist->nodename;
+ else
+ node = erts_this_dist_entry->sysname;
+ from = TUPLE2(hp, mdep->u.name, node);
+ hp += 3;
+ }
+
+ ASSERT(mdp->origin.type == mon_type);
+ switch (mon_type) {
+ case ERTS_MON_TYPE_PORT:
+ type = am_port;
+ if (mdp->origin.other.item == am_undefined) {
+ /* failed by name... */
+ ERL_MESSAGE_FROM(mp) = am_system;
+ }
+ else {
+ ASSERT(is_internal_port(mdp->origin.other.item));
+ ERL_MESSAGE_FROM(mp) = mdp->origin.other.item;
+ }
+ break;
+ case ERTS_MON_TYPE_PROC:
+ type = am_process;
+ if (mdp->origin.other.item == am_undefined) {
+ /* failed by name... */
+ ERL_MESSAGE_FROM(mp) = am_system;
+ }
+ else {
+ ASSERT(is_internal_pid(mdp->origin.other.item));
+ ERL_MESSAGE_FROM(mp) = mdp->origin.other.item;
+ }
+ break;
+ case ERTS_MON_TYPE_DIST_PROC:
+ type = am_process;
+ if (node == am_undefined) {
+ ErtsMonitorDataExtended *mdep;
+ ASSERT(mdp->origin.flags & ERTS_ML_FLG_EXTENDED);
+ mdep = (ErtsMonitorDataExtended *) mdp;
+ ASSERT(mdep->dist);
+ node = mdep->dist->nodename;
+ }
+ ASSERT(is_atom(node) && node != am_undefined);
+ ERL_MESSAGE_FROM(mp) = node;
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected monitor type");
+ type = am_undefined;
+ ERL_MESSAGE_FROM(mp) = am_undefined;
+ break;
+ }
+
+ ERL_MESSAGE_TERM(mp) = TUPLE5(hp, am_DOWN, ref,
+ type, from, reason);
+ hp += 6;
+
+ ERL_MESSAGE_TOKEN(mp) = NIL;
+#ifdef USE_VM_PROBES
+ ERL_MESSAGE_DT_UTAG(mp) = NIL;
+#endif
+ /* Replace original signal with the exit message... */
+ convert_to_msg(c_p, sig, mp, next_nm_sig);
+
+ cnt += 4;
+
+ erts_proc_notify_new_message(c_p, ERTS_PROC_LOCK_MAIN);
+
+ return cnt;
+}
+
+static ERTS_INLINE int
+convert_to_nodedown_messages(Process *c_p,
+ ErtsMessage *sig,
+ ErtsMonitorData *mdp,
+ ErtsMessage ***next_nm_sig)
+{
+ int cnt = 1;
+ Uint n;
+ ErtsMonitorDataExtended *mdep = (ErtsMonitorDataExtended *) mdp;
+
+ ASSERT((mdp->origin.flags & ERTS_ML_FLGS_SAME)
+ == (mdp->target.flags & ERTS_ML_FLGS_SAME));
+ ASSERT(mdp->origin.flags & ERTS_ML_FLG_EXTENDED);
+
+ n = mdep->u.refc;
+
+ if (n == 0)
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ else {
+ Uint i;
+ ErtsMessage *nd_first = NULL;
+ ErtsMessage *nd_last = NULL;
+ ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN;
+ Eterm node = mdep->dist->nodename;
+
+ ASSERT(is_atom(node));
+ ASSERT(n > 0);
+
+ for (i = 0; i < n; i++) {
+ ErtsMessage *mp;
+ ErlOffHeap *ohp;
+ Eterm *hp;
+
+ mp = erts_alloc_message_heap(c_p, &locks, 3, &hp, &ohp);
+
+ ERL_MESSAGE_TERM(mp) = TUPLE2(hp, am_nodedown, node);
+ ERL_MESSAGE_FROM(mp) = am_system;
+ ERL_MESSAGE_TOKEN(mp) = NIL;
+#ifdef USE_VM_PROBES
+ ERL_MESSAGE_DT_UTAG(mp) = NIL;
+#endif
+ mp->next = nd_first;
+ nd_first = mp;
+ if (!nd_last)
+ nd_last = mp;
+ cnt++;
+ }
+
+ if (locks != ERTS_PROC_LOCK_MAIN)
+ erts_proc_unlock(c_p, locks & ~ERTS_PROC_LOCK_MAIN);
+
+ /* Replace signal with 'nodedown' messages */
+ convert_to_msgs(c_p, sig, n, nd_first, nd_last, next_nm_sig);
+
+ erts_proc_notify_new_message(c_p, ERTS_PROC_LOCK_MAIN);
+ }
+ return cnt;
+}
+
+static int
+handle_nodedown(Process *c_p,
+ ErtsMessage *sig,
+ ErtsMonitorData *mdp,
+ ErtsMessage ***next_nm_sig)
+{
+ ErtsMonitorDataExtended *mdep = (ErtsMonitorDataExtended *) mdp;
+ ErtsMonitor *omon = &mdp->origin;
+ int not_in_subtab = !(omon->flags & ERTS_ML_FLG_IN_SUBTABLE);
+ int cnt = 1;
+
+ ASSERT(erts_monitor_is_in_table(omon));
+
+ if (not_in_subtab & !mdep->uptr.node_monitors)
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p), omon);
+ else if (not_in_subtab) {
+ ErtsMonitor *sub_mon;
+ ErtsMonitorDataExtended *sub_mdep;
+ sub_mon = erts_monitor_list_last(mdep->uptr.node_monitors);
+ ASSERT(sub_mon);
+ erts_monitor_list_delete(&mdep->uptr.node_monitors, sub_mon);
+ sub_mon->flags &= ~ERTS_ML_FLG_IN_SUBTABLE;
+ sub_mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(sub_mon);
+ ASSERT(!sub_mdep->uptr.node_monitors);
+ sub_mdep->uptr.node_monitors = mdep->uptr.node_monitors;
+ mdep->uptr.node_monitors = NULL;
+ erts_monitor_tree_replace(&ERTS_P_MONITORS(c_p), omon, sub_mon);
+ cnt += 2;
+ }
+ else {
+ ErtsMonitorDataExtended *top_mdep;
+ ErtsMonitor *top_mon;
+ ASSERT(is_atom(omon->other.item));
+ ASSERT(!mdep->uptr.node_monitors);
+ top_mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p),
+ omon->other.item);
+ ASSERT(top_mon);
+ top_mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(top_mon);
+ ASSERT(top_mdep->uptr.node_monitors);
+ erts_monitor_list_delete(&top_mdep->uptr.node_monitors, omon);
+ omon->flags &= ~ERTS_ML_FLG_IN_SUBTABLE;
+ cnt += 3;
+ }
+
+ return cnt + convert_to_nodedown_messages(c_p, sig, mdp, next_nm_sig);
+}
+
+static void
+handle_persistent_mon_msg(Process *c_p, Uint16 type,
+ ErtsMonitor *mon, ErtsMessage *sig,
+ Eterm msg, ErtsMessage ***next_nm_sig)
+{
+ convert_prepared_sig_to_msg(c_p, sig, msg, next_nm_sig);
+
+ switch (type) {
+
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ ASSERT(mon->type == ERTS_MON_TYPE_TIME_OFFSET);
+ break;
+
+ case ERTS_MON_TYPE_NODES: {
+ ErtsMonitorDataExtended *mdep;
+ Uint n;
+ ASSERT(mon->type == ERTS_MON_TYPE_NODES);
+ mdep = (ErtsMonitorDataExtended *) erts_monitor_to_data(mon);
+ ERTS_ML_ASSERT(mdep->u.refc > 0);
+ n = mdep->u.refc;
+ n--;
+ if (n > 0) {
+ ErtsProcLocks locks = ERTS_PROC_LOCK_MAIN;
+ ErtsMessage *first = NULL, *prev, *last;
+ Uint hsz = size_object(msg);
+ Uint i;
+
+ for (i = 0; i < n; i++) {
+ Eterm *hp;
+ ErlOffHeap *ohp;
+
+ last = erts_alloc_message_heap(c_p, &locks, hsz, &hp, &ohp);
+
+ if (!first)
+ first = last;
+ else
+ prev->next = last;
+ prev = last;
+
+ ERL_MESSAGE_TERM(last) = copy_struct(msg, hsz, &hp, ohp);
+
+#ifdef USE_VM_PROBES
+ ASSERT(is_immed(ERL_MESSAGE_DT_UTAG(sig)));
+ ERL_MESSAGE_DT_UTAG(last) = ERL_MESSAGE_DT_UTAG(sig);
+#endif
+ ASSERT(is_immed(ERL_MESSAGE_TOKEN(sig)));
+ ERL_MESSAGE_TOKEN(last) = ERL_MESSAGE_TOKEN(sig);
+ ASSERT(is_immed(ERL_MESSAGE_FROM(sig)));
+ ERL_MESSAGE_FROM(last) = ERL_MESSAGE_FROM(sig);
+
+ }
+ if (locks != ERTS_PROC_LOCK_MAIN)
+ erts_proc_unlock(c_p, locks & ~ERTS_PROC_LOCK_MAIN);
+ insert_messages(c_p, &sig->next, first, last, n, next_nm_sig);
+ }
+ break;
+ }
+
+ default:
+ ERTS_INTERNAL_ERROR("Invalid type");
+ break;
+ }
+
+ erts_proc_notify_new_message(c_p, ERTS_PROC_LOCK_MAIN);
+}
+
+static void
+group_leader_reply(Process *c_p, Eterm to, Eterm ref, int success)
+{
+ Process *rp = erts_proc_lookup(to);
+
+ if (rp) {
+ ErtsProcLocks locks;
+ Uint sz;
+ Eterm *hp, msg, ref_cpy, result;
+ ErlOffHeap *ohp;
+ ErtsMessage *mp;
+
+ ASSERT(is_internal_ref(ref));
+
+ locks = c_p == rp ? ERTS_PROC_LOCK_MAIN : 0;
+ sz = size_object(ref);
+
+ mp = erts_alloc_message_heap(rp, &locks, sz+3,
+ &hp, &ohp);
+
+ ref_cpy = copy_struct(ref, sz, &hp, ohp);
+ result = success ? am_true : am_badarg;
+ msg = TUPLE2(hp, ref_cpy, result);
+
+ erts_queue_message(rp, locks, mp, msg, am_system);
+
+ if (c_p == rp)
+ locks &= ~ERTS_PROC_LOCK_MAIN;
+
+ if (locks)
+ erts_proc_unlock(rp, locks);
+ }
+}
+
+static void
+handle_group_leader(Process *c_p, ErtsSigGroupLeader *sgl)
+{
+ erts_aint_t flags;
+
+ flags = erts_atomic_read_band_nob(&sgl->flags, ~ERTS_SIG_GL_FLG_ACTIVE);
+ if (flags & ERTS_SIG_GL_FLG_ACTIVE) {
+ int res = erts_set_group_leader(c_p, sgl->group_leader);
+ if (is_internal_pid(sgl->reply_to))
+ group_leader_reply(c_p, sgl->reply_to, sgl->ref, res);
+ }
+
+ flags = erts_atomic_read_band_nob(&sgl->flags, ~ERTS_SIG_GL_FLG_RECEIVER);
+ if ((flags & ~ERTS_SIG_GL_FLG_RECEIVER) == 0)
+ destroy_sig_group_leader(sgl);
+}
+
+
+/*
+ * Called in order to handle incoming signals.
+ */
+
+int
+erts_proc_sig_handle_incoming(Process *c_p, erts_aint32_t *statep,
+ int *redsp, int max_reds, int local_only)
+{
+ Eterm tag;
+ erts_aint32_t state;
+ int cnt, limit, abs_lim, msg_tracing;
+ ErtsMessage *sig, ***next_nm_sig;
+ ErtsSigRecvTracing tracing;
+
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(c_p);
+ ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN == erts_proc_lc_my_proc_locks(c_p));
+
+ if (local_only)
+ state = -1; /* can never be a valid state... */
+ else {
+ state = erts_atomic32_read_nob(&c_p->state);
+ if (ERTS_PSFLG_SIG_IN_Q & state) {
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ);
+ erts_proc_sig_fetch(c_p);
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
+ }
+ }
+
+ limit = *redsp;
+ *redsp = 0;
+
+ if (!c_p->sig_qs.cont) {
+ if (state == -1)
+ *statep = erts_atomic32_read_nob(&c_p->state);
+ else
+ *statep = state;
+ return !0;
+ }
+
+ next_nm_sig = &c_p->sig_qs.nmsigs.next;
+
+ setup_tracing_state(c_p, &tracing);
+ msg_tracing = tracing.messages.active;
+
+ limit *= ERTS_SIG_REDS_CNT_FACTOR;
+ abs_lim = ERTS_SIG_REDS_CNT_FACTOR*max_reds;
+ if (limit > abs_lim)
+ limit = abs_lim;
+
+ cnt = 0;
+
+ do {
+
+ if (msg_tracing) {
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ if (handle_msg_tracing(c_p, &tracing, next_nm_sig) != 0) {
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break; /* tracing limit or end... */
+ }
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ }
+
+ if (!*next_nm_sig)
+ break;
+
+ sig = **next_nm_sig;
+
+ ASSERT(sig);
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ tag = ((ErtsSignal *) sig)->common.tag;
+
+ switch (ERTS_PROC_SIG_OP(tag)) {
+
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED: {
+ int exited;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ cnt += handle_exit_signal(c_p, &tracing, sig,
+ next_nm_sig, &exited);
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ if (exited)
+ goto stop; /* terminated by signal */
+ /* ignored or converted to exit message... */
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_MONITOR_DOWN: {
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+ ErtsExitSignalData *xsigd = NULL;
+ ErtsMonitorData *mdp = NULL;
+ ErtsMonitor *omon = NULL, *tmon = NULL;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ switch (type) {
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_PORT:
+ tmon = (ErtsMonitor *) sig;
+ ASSERT(erts_monitor_is_target(tmon));
+ ASSERT(!erts_monitor_is_in_table(tmon));
+ mdp = erts_monitor_to_data(tmon);
+ if (erts_monitor_is_in_table(&mdp->origin)) {
+ omon = &mdp->origin;
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p),
+ omon);
+ cnt += convert_to_down_message(c_p, sig, mdp,
+ type, next_nm_sig);
+ }
+ break;
+ case ERTS_SIG_Q_TYPE_GEN_EXIT:
+ xsigd = get_exit_signal_data(sig);
+ omon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p),
+ xsigd->u.ref);
+ if (omon) {
+ ASSERT(erts_monitor_is_origin(omon));
+ if (omon->type == ERTS_MON_TYPE_DIST_PROC) {
+ mdp = erts_monitor_to_data(omon);
+ if (erts_monitor_dist_delete(&mdp->target))
+ tmon = &mdp->target;
+ }
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p),
+ omon);
+ cnt += convert_prepared_down_message(c_p, sig,
+ xsigd->message,
+ next_nm_sig);
+ }
+ break;
+ case ERTS_MON_TYPE_NODE:
+ tmon = (ErtsMonitor *) sig;
+ ASSERT(erts_monitor_is_target(tmon));
+ ASSERT(!erts_monitor_is_in_table(tmon));
+ mdp = erts_monitor_to_data(tmon);
+ if (erts_monitor_is_in_table(&mdp->origin)) {
+ omon = &mdp->origin;
+ cnt += handle_nodedown(c_p, sig, mdp, next_nm_sig);
+ }
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("invalid monitor type");
+ break;
+ }
+
+ if (omon) {
+ if (tmon)
+ erts_monitor_release_both(mdp);
+ else
+ erts_monitor_release(omon);
+ }
+ else {
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ if (xsigd) {
+ sig->next = NULL;
+ erts_cleanup_messages(sig);
+ }
+ if (tmon)
+ erts_monitor_release(tmon);
+ }
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG: {
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+ ErtsMonitor *mon;
+ Eterm msg;
+ Eterm key;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ key = get_persist_mon_msg(sig, &msg);
+
+ cnt++;
+ mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p), key);
+ if (mon) {
+ ASSERT(erts_monitor_is_origin(mon));
+ handle_persistent_mon_msg(c_p, type, mon, sig,
+ msg, next_nm_sig);
+ }
+ else {
+ cnt++;
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ sig->next = NULL;
+ erts_cleanup_messages(sig);
+ }
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_MONITOR: {
+ ErtsMonitor *mon = (ErtsMonitor *) sig;
+
+ ASSERT(erts_monitor_is_target(mon));
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+
+ if (mon->type == ERTS_MON_TYPE_DIST_PROC)
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(c_p), mon);
+ else
+ erts_monitor_list_insert(&ERTS_P_LT_MONITORS(c_p), mon);
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_DEMONITOR: {
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+
+ if (type == ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR) {
+ ErtsMonitor *tmon;
+ ErtsSigDistProcDemonitor *dmon;
+ dmon = (ErtsSigDistProcDemonitor *) sig;
+ tmon = erts_monitor_tree_lookup(ERTS_P_MONITORS(c_p), dmon->ref);
+ destroy_dist_proc_demonitor(dmon);
+ cnt++;
+ if (tmon) {
+ ErtsMonitorData *mdp = erts_monitor_to_data(tmon);
+ ASSERT(erts_monitor_is_target(tmon));
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p), tmon);
+ if (!erts_monitor_dist_delete(&mdp->origin))
+ erts_monitor_release(tmon);
+ else
+ erts_monitor_release_both(mdp);
+ cnt += 2;
+ }
+ }
+ else {
+ ErtsMonitor *omon = (ErtsMonitor *) sig;
+ ErtsMonitorData *mdp = erts_monitor_to_data(omon);
+ ASSERT(omon->type == type);
+ ASSERT(erts_monitor_is_origin(omon));
+ ASSERT(!erts_monitor_is_in_table(omon));
+ if (!erts_monitor_is_in_table(&mdp->target))
+ erts_monitor_release(omon);
+ else {
+ ErtsMonitor *tmon = &mdp->target;
+ ASSERT(tmon->type == type);
+ if (type == ERTS_MON_TYPE_DIST_PROC)
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(c_p), tmon);
+ else {
+ erts_monitor_list_delete(&ERTS_P_LT_MONITORS(c_p), tmon);
+ if (type == ERTS_MON_TYPE_RESOURCE) {
+ erts_nif_demonitored((ErtsResource *) tmon->other.ptr);
+ cnt++;
+ }
+ }
+ erts_monitor_release_both(mdp);
+ cnt++;
+ }
+ cnt++;
+ }
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_LINK: {
+ ErtsLink *rlnk, *lnk = (ErtsLink *) sig;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ rlnk = erts_link_tree_insert_addr_replace(&ERTS_P_LINKS(c_p),
+ lnk);
+ if (!rlnk) {
+ if (tracing.procs)
+ getting_linked(c_p, lnk->other.item);
+ }
+ else {
+ if (rlnk->type != ERTS_LNK_TYPE_DIST_PROC)
+ erts_link_release(rlnk);
+ else {
+ ErtsLinkData *ldp;
+ ErtsLink *dlnk = erts_link_to_other(rlnk, &ldp);
+ if (erts_link_dist_delete(dlnk))
+ erts_link_release_both(ldp);
+ else
+ erts_link_release(rlnk);
+ }
+ }
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_UNLINK: {
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+ ErtsLinkData *ldp;
+ ErtsLink *llnk;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ if (type == ERTS_SIG_Q_TYPE_DIST_LINK) {
+ ErtsSigDistLinkOp *sdlnk = (ErtsSigDistLinkOp *) sig;
+ ASSERT(type == ERTS_SIG_Q_TYPE_DIST_LINK);
+ ASSERT(is_external_pid(sdlnk->remote));
+ llnk = erts_link_tree_lookup(ERTS_P_LINKS(c_p), sdlnk->remote);
+ if (llnk) {
+ ErtsLink *dlnk = erts_link_to_other(llnk, &ldp);
+ erts_link_tree_delete(&ERTS_P_LINKS(c_p), llnk);
+ if (erts_link_dist_delete(dlnk))
+ erts_link_release_both(ldp);
+ else
+ erts_link_release(llnk);
+ cnt += 8;
+ if (tracing.procs)
+ getting_unlinked(c_p, sdlnk->remote);
+ }
+ destroy_sig_dist_link_op(sdlnk);
+ cnt++;
+ }
+ else {
+ ErtsLinkData *ldp;
+ ErtsLink *dlnk, *slnk;
+ slnk = (ErtsLink *) sig;
+ llnk = erts_link_to_other(slnk, &ldp);
+ dlnk = erts_link_tree_key_delete(&ERTS_P_LINKS(c_p), llnk);
+ if (!dlnk)
+ erts_link_release(slnk);
+ else {
+ if (tracing.procs)
+ getting_unlinked(c_p, llnk->other.item);
+ if (dlnk == llnk)
+ erts_link_release_both(ldp);
+ else {
+ erts_link_release(slnk);
+ erts_link_release(dlnk);
+ }
+ }
+ cnt += 2;
+ }
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_GROUP_LEADER: {
+ ErtsSigGroupLeader *sgl = (ErtsSigGroupLeader *) sig;
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ handle_group_leader(c_p, sgl);
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE: {
+ Uint16 type = ERTS_PROC_SIG_TYPE(tag);
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+ msg_tracing = handle_trace_change_state(c_p, &tracing,
+ type, sig,
+ next_nm_sig);
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, &tracing, next_nm_sig);
+
+ break;
+ }
+
+ default:
+ ERTS_INTERNAL_ERROR("Unknown signal");
+ break;
+ }
+
+ cnt++;
+
+ } while (cnt <= limit || stretch_limit(c_p, &tracing, abs_lim, &limit));
+
+stop: {
+ int deferred_save, deferred_saved_last, res;
+
+ deferred_saved_last = !!(c_p->flags & F_DEFERRED_SAVED_LAST);
+ deferred_save = 0;
+
+ if (!deferred_saved_last)
+ deferred_save = 0;
+ else {
+ if (c_p->sig_qs.saved_last == &c_p->sig_qs.cont) {
+ c_p->sig_qs.saved_last = c_p->sig_qs.last;
+ c_p->flags &= ~F_DEFERRED_SAVED_LAST;
+ deferred_saved_last = deferred_save = 0;
+ }
+ else {
+ if (c_p->sig_qs.save == c_p->sig_qs.last)
+ deferred_save = !0;
+ else
+ deferred_save = 0;
+ }
+ }
+
+ ASSERT(c_p->sig_qs.saved_last != &c_p->sig_qs.cont);
+
+ if (ERTS_UNLIKELY(msg_tracing != 0)) {
+ /*
+ * All messages that has been traced should
+ * be moved to inner queue. Next signal in
+ * middle queue should either be next message
+ * to trace or next non-message signal.
+ */
+ ASSERT(tracing.messages.next);
+ if (*next_nm_sig) {
+ if (*next_nm_sig == tracing.messages.next)
+ *next_nm_sig = &c_p->sig_qs.cont;
+ if (c_p->sig_qs.nmsigs.last == tracing.messages.next)
+ c_p->sig_qs.nmsigs.last = &c_p->sig_qs.cont;
+ *statep = erts_atomic32_read_nob(&c_p->state);
+ }
+ else {
+ ASSERT(!c_p->sig_qs.nmsigs.next);
+ c_p->sig_qs.nmsigs.last = NULL;
+ state = erts_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_SIG_Q);
+ state &= ~ERTS_PSFLG_SIG_Q;
+ *statep = state;
+ }
+
+ if (tracing.messages.next != &c_p->sig_qs.cont) {
+ *c_p->sig_qs.last = c_p->sig_qs.cont;
+ c_p->sig_qs.last = tracing.messages.next;
+
+ c_p->sig_qs.cont = *tracing.messages.next;
+ if (!c_p->sig_qs.cont)
+ c_p->sig_qs.cont_last = &c_p->sig_qs.cont;
+ *c_p->sig_qs.last = NULL;
+ }
+
+ res = !c_p->sig_qs.cont;
+ }
+ else if (*next_nm_sig) {
+ /*
+ * All messages prior to next non-message
+ * signal should be moved to inner queue.
+ * Next non-message signal to handle should
+ * be first in middle queue.
+ */
+ ASSERT(**next_nm_sig);
+ if (*next_nm_sig != &c_p->sig_qs.cont) {
+ *c_p->sig_qs.last = c_p->sig_qs.cont;
+ c_p->sig_qs.last = *next_nm_sig;
+
+ c_p->sig_qs.cont = **next_nm_sig;
+ if (c_p->sig_qs.nmsigs.last == *next_nm_sig)
+ c_p->sig_qs.nmsigs.last = &c_p->sig_qs.cont;
+ *next_nm_sig = &c_p->sig_qs.cont;
+ *c_p->sig_qs.last = NULL;
+ }
+
+ ASSERT(c_p->sig_qs.cont);
+
+ *statep = erts_atomic32_read_nob(&c_p->state);
+
+ res = 0;
+ }
+ else {
+ /*
+ * All non-message signals handled. All
+ * messages should be moved to inner queue.
+ * Middle queue should be empty.
+ */
+ ASSERT(!c_p->sig_qs.nmsigs.next);
+ c_p->sig_qs.nmsigs.last = NULL;
+
+ if (c_p->sig_qs.cont_last != &c_p->sig_qs.cont) {
+ ASSERT(!*c_p->sig_qs.last);
+ *c_p->sig_qs.last = c_p->sig_qs.cont;
+ c_p->sig_qs.last = c_p->sig_qs.cont_last;
+ ASSERT(!*c_p->sig_qs.last);
+
+ c_p->sig_qs.cont_last = &c_p->sig_qs.cont;
+ c_p->sig_qs.cont = NULL;
+ }
+
+ ASSERT(!c_p->sig_qs.cont);
+
+ state = erts_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_SIG_Q);
+ state &= ~ERTS_PSFLG_SIG_Q;
+ *statep = state;
+ res = !0;
+ }
+
+ if (deferred_saved_last
+ && (c_p->sig_qs.saved_last == &c_p->sig_qs.cont)) {
+ c_p->sig_qs.saved_last = c_p->sig_qs.last;
+ c_p->flags &= ~F_DEFERRED_SAVED_LAST;
+ if (deferred_save)
+ c_p->sig_qs.save = c_p->sig_qs.saved_last;
+ }
+ else if (!res) {
+ if (deferred_save) {
+ c_p->sig_qs.save = c_p->sig_qs.last;
+ ASSERT(!PEEK_MESSAGE(c_p));
+ }
+ }
+ else {
+ c_p->flags &= ~F_DEFERRED_SAVED_LAST;
+ if (deferred_save)
+ c_p->sig_qs.save = c_p->sig_qs.saved_last;
+ }
+
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(c_p);
+
+ *redsp = cnt/4 + 1;
+
+ return res;
+ }
+}
+
+static int
+stretch_limit(Process *c_p, ErtsSigRecvTracing *tp,
+ int abs_lim, int *limp)
+{
+ int lim;
+ /*
+ * Stretch limit up to a maximum of 'abs_lim' if
+ * there currently are no messages available to
+ * inspect by 'receive' and it might be possible
+ * to get messages available by processing
+ * signals (or trace messages).
+ */
+
+ lim = *limp;
+ ASSERT(abs_lim >= lim);
+ if (abs_lim == lim)
+ return 0;
+
+ if (!(c_p->flags & F_DEFERRED_SAVED_LAST)) {
+ ErtsSignal *sig;
+
+ if (PEEK_MESSAGE(c_p))
+ return 0;
+ sig = (ErtsSignal *) c_p->sig_qs.cont;
+ if (!sig)
+ return 0; /* No signals to process available... */
+ if (ERTS_SIG_IS_MSG(sig) && tp->messages.next != &c_p->sig_qs.cont)
+ return 0;
+ }
+
+ lim += ERTS_SIG_REDS_CNT_FACTOR*100;
+ if (lim > abs_lim)
+ lim = abs_lim;
+ *limp = lim;
+ return !0;
+}
+
+
+int
+erts_proc_sig_handle_exit(Process *c_p, int *redsp)
+{
+ int cnt, limit;
+ ErtsMessage *sig, ***next_nm_sig;
+
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(c_p);
+ ERTS_LC_ASSERT(!erts_proc_lc_my_proc_locks(c_p));
+
+ ASSERT(!(ERTS_PSFLG_SIG_IN_Q & erts_atomic32_read_nob(&c_p->state)));
+
+ limit = *redsp;
+ limit *= ERTS_SIG_REDS_CNT_FACTOR;
+
+ *redsp = 1;
+
+ next_nm_sig = &c_p->sig_qs.nmsigs.next;
+
+ if (!*next_nm_sig) {
+ ASSERT(!c_p->sig_qs.nmsigs.last);
+ return !0; /* done... */
+ }
+
+ cnt = 0;
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, NULL, next_nm_sig);
+
+ do {
+ Eterm tag;
+ Uint16 type;
+ int op;
+
+ sig = **next_nm_sig;
+
+ ASSERT(sig);
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ tag = ((ErtsSignal *) sig)->common.tag;
+ type = ERTS_PROC_SIG_TYPE(tag);
+ op = ERTS_PROC_SIG_OP(tag);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+
+ ERTS_PROC_SIG_HDBG_PRIV_CHKQ(c_p, NULL, next_nm_sig);
+
+ cnt++;
+
+ switch (op) {
+
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+ case ERTS_SIG_Q_OP_MONITOR_DOWN:
+ switch (type) {
+ case ERTS_SIG_Q_TYPE_GEN_EXIT:
+ sig->next = NULL;
+ erts_cleanup_messages(sig);
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ case ERTS_LNK_TYPE_PROC:
+ case ERTS_LNK_TYPE_DIST_PROC:
+ erts_link_release((ErtsLink *) sig);
+ break;
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_NODE:
+ erts_monitor_release((ErtsMonitor *) sig);
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected sig type");
+ break;
+ }
+ break;
+
+ case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG:
+ sig->next = NULL;
+ erts_cleanup_messages(sig);
+ break;
+
+ case ERTS_SIG_Q_OP_MONITOR: {
+ ErtsProcExitContext pectxt = {c_p, am_noproc};
+ erts_proc_exit_handle_monitor((ErtsMonitor *) sig,
+ (void *) &pectxt);
+ cnt += 4;
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_DEMONITOR:
+ if (type == ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR)
+ destroy_dist_proc_demonitor((ErtsSigDistProcDemonitor *) sig);
+ else
+ erts_monitor_release((ErtsMonitor *) sig);
+ break;
+
+ case ERTS_SIG_Q_OP_LINK: {
+ ErtsProcExitContext pectxt = {c_p, am_noproc};
+ erts_proc_exit_handle_link((ErtsLink *) sig, (void *) &pectxt);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_UNLINK:
+ if (type == ERTS_SIG_Q_TYPE_DIST_LINK)
+ destroy_sig_dist_link_op((ErtsSigDistLinkOp *) sig);
+ else
+ erts_link_release((ErtsLink *) sig);
+ break;
+
+ case ERTS_SIG_Q_OP_GROUP_LEADER: {
+ ErtsSigGroupLeader *sgl = (ErtsSigGroupLeader *) sig;
+ handle_group_leader(c_p, sgl);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
+ destroy_trace_info((ErtsSigTraceInfo *) sig);
+ break;
+
+ default:
+ ERTS_INTERNAL_ERROR("Unknown signal");
+ break;
+ }
+
+ } while (cnt >= limit && *next_nm_sig);
+
+ *redsp += cnt / ERTS_SIG_REDS_CNT_FACTOR;
+
+ if (*next_nm_sig)
+ return 0;
+
+ ASSERT(!c_p->sig_qs.nmsigs.next);
+ c_p->sig_qs.nmsigs.last = NULL;
+ (void) erts_atomic32_read_band_nob(&c_p->state,
+ ~ERTS_PSFLG_SIG_Q);
+ return !0;
+}
+
+#ifdef USE_VM_PROBES
+# define ERTS_CLEAR_SEQ_TOKEN(MP) \
+ ERL_MESSAGE_TOKEN((MP)) = ((ERL_MESSAGE_DT_UTAG((MP)) != NIL) \
+ ? am_have_dt_utag : NIL)
+#else
+# define ERTS_CLEAR_SEQ_TOKEN(MP) \
+ ERL_MESSAGE_TOKEN((MP)) = NIL
+#endif
+
+static ERTS_INLINE void
+clear_seq_trace_token(ErtsMessage *sig)
+{
+ if (ERTS_SIG_IS_MSG((ErtsSignal *) sig))
+ ERTS_CLEAR_SEQ_TOKEN(sig);
+ else {
+ Uint tag;
+ Uint16 op, type;
+
+ tag = ((ErtsSignal *) sig)->common.tag;
+ type = ERTS_PROC_SIG_TYPE(tag);
+ op = ERTS_PROC_SIG_OP(tag);
+
+ switch (op) {
+
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+ case ERTS_SIG_Q_OP_MONITOR_DOWN:
+ switch (type) {
+ case ERTS_SIG_Q_TYPE_GEN_EXIT:
+ ERTS_CLEAR_SEQ_TOKEN(sig);
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ case ERTS_LNK_TYPE_PROC:
+ case ERTS_LNK_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_NODE:
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected sig type");
+ break;
+ }
+ break;
+
+ case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG:
+ ERTS_CLEAR_SEQ_TOKEN(sig);
+ break;
+
+ case ERTS_SIG_Q_OP_MONITOR:
+ case ERTS_SIG_Q_OP_DEMONITOR:
+ case ERTS_SIG_Q_OP_LINK:
+ case ERTS_SIG_Q_OP_UNLINK:
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
+ break;
+
+ default:
+ ERTS_INTERNAL_ERROR("Unknown signal");
+ break;
+ }
+ }
+}
+
+void
+erts_proc_sig_clear_seq_trace_tokens(Process *c_p)
+{
+ ASSERT(erts_thr_progress_is_blocking());
+ erts_proc_sig_fetch(c_p);
+ ERTS_FOREACH_SIG_PRIVQS(c_p, sig, clear_seq_trace_token(sig));
+}
+
+Uint
+erts_proc_sig_signal_size(ErtsSignal *sig)
+{
+ Eterm tag;
+ Uint16 type;
+ int op;
+ Uint size = 0;
+
+ ASSERT(sig);
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ tag = sig->common.tag;
+ type = ERTS_PROC_SIG_TYPE(tag);
+ op = ERTS_PROC_SIG_OP(tag);
+
+ switch (op) {
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+ case ERTS_SIG_Q_OP_MONITOR_DOWN:
+ switch (type) {
+ case ERTS_SIG_Q_TYPE_GEN_EXIT:
+ size = ((ErtsMessage *) sig)->hfrag.alloc_size;
+ size *= sizeof(Eterm);
+ size += sizeof(ErtsMessage) - sizeof(Eterm);
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ case ERTS_LNK_TYPE_PROC:
+ case ERTS_LNK_TYPE_DIST_PROC:
+ size = erts_link_size((ErtsLink *) sig);
+ break;
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_NODE:
+ size = erts_monitor_size((ErtsMonitor *) sig);
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected sig type");
+ break;
+ }
+ break;
+
+ case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG:
+ size = ((ErtsMessage *) sig)->hfrag.alloc_size;
+ size *= sizeof(Eterm);
+ size += sizeof(ErtsMessage) - sizeof(Eterm);
+ break;
+
+ case ERTS_SIG_Q_OP_DEMONITOR:
+ if (type == ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR) {
+ size = NC_HEAP_SIZE(((ErtsSigDistProcDemonitor *) sig)->ref);
+ size--;
+ size *= sizeof(Eterm);
+ size += sizeof(ErtsSigDistProcDemonitor);
+ break;
+ }
+ /* Fall through... */
+
+ case ERTS_SIG_Q_OP_MONITOR:
+ size = erts_monitor_size((ErtsMonitor *) sig);
+ break;
+
+ case ERTS_SIG_Q_OP_UNLINK:
+ if (type == ERTS_SIG_Q_TYPE_DIST_LINK) {
+ size = NC_HEAP_SIZE(((ErtsSigDistLinkOp *) sig)->remote);
+ size--;
+ size *= sizeof(Eterm);
+ size += sizeof(ErtsSigDistLinkOp);
+ break;
+ }
+ /* Fall through... */
+
+ case ERTS_SIG_Q_OP_LINK:
+ size = erts_link_size((ErtsLink *) sig);
+ break;
+
+ case ERTS_SIG_Q_OP_GROUP_LEADER: {
+ ErtsSigGroupLeader *sgl = (ErtsSigGroupLeader *) sig;
+ size = size_object(sgl->group_leader);
+ size += size_object(sgl->ref);
+ size *= sizeof(Eterm);
+ size += sizeof(ErtsSigGroupLeader) - sizeof(Eterm);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
+ size = sizeof(ErtsSigTraceInfo);
+ break;
+
+ default:
+ ERTS_INTERNAL_ERROR("Unknown signal");
+ break;
+ }
+
+ return size;
+}
+
+int
+erts_proc_sig_receive_helper(Process *c_p,
+ int fcalls,
+ int neg_o_reds,
+ ErtsMessage **msgpp,
+ int *get_outp)
+{
+ ErtsMessage *msgp;
+ int reds, consumed_reds, left_reds, max_reds;
+
+ /*
+ * Called from the loop-rec instruction when receive
+ * has reached end of inner (private) queue. This function
+ * tries to move more messages into the inner queue
+ * for the receive to handle. This by, processing the
+ * middle (private) queue and/or moving signals from
+ * the outer (public) queue into the middle queue.
+ *
+ * If this function succeeds in making more messages
+ * available in the inner queue, *msgpp points to next
+ * message. If *msgpp is set to NULL when:
+ * -- process became exiting. *get_outp is set to a
+ * value greater than zero.
+ * -- process needs to yield. *get_outp is set to a
+ * value less than zero.
+ * -- no more messages exist in any of the queues.
+ * *get_outp is set to zero and the message queue
+ * lock remains locked. This so the process can
+ * make its way to the appropriate wait instruction
+ * without racing with new incoming messages.
+ */
+
+ ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN);
+ ASSERT(!ERTS_PROC_IS_EXITING(c_p));
+ ASSERT(!*msgpp);
+
+ left_reds = fcalls - neg_o_reds;
+ consumed_reds = 0;
+
+ while (!0) {
+ erts_aint32_t state;
+
+ if (!c_p->sig_qs.cont) {
+
+ consumed_reds += 4;
+ left_reds -= 4;
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ);
+ if (c_p->sig_inq.first)
+ erts_proc_sig_fetch(c_p);
+ /*
+ * Messages may have been moved directly to
+ * inner queue...
+ */
+ msgp = PEEK_MESSAGE(c_p);
+ if (msgp) {
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
+ *get_outp = 0;
+ *msgpp = msgp;
+ return consumed_reds;
+ }
+
+ if (!c_p->sig_qs.cont) {
+ /*
+ * No messages! Return with message queue
+ * locked and let the process continue
+ * to wait instruction...
+ */
+ *get_outp = 0;
+ *msgpp = NULL;
+ return consumed_reds;
+ }
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ);
+
+ if (left_reds <= 0) {
+ *get_outp = -1; /* yield */
+ *msgpp = NULL;
+
+ ASSERT(consumed_reds >= (fcalls - neg_o_reds));
+ return consumed_reds;
+ }
+
+ /* handle newly arrived signals... */
+ }
+
+ reds = ERTS_SIG_HANDLE_REDS_MAX_PREFERED;
+#ifdef DEBUG
+ /* test that it works also with very few reds */
+ max_reds = left_reds;
+ if (reds > left_reds)
+ reds = left_reds;
+#else
+ /* At least work preferred amount of reds... */
+ max_reds = left_reds;
+ if (max_reds < reds)
+ max_reds = reds;
+#endif
+ (void) erts_proc_sig_handle_incoming(c_p, &state, &reds,
+ max_reds, !0);
+ consumed_reds += reds;
+ left_reds -= reds;
+ /* we may have exited by an incoming signal... */
+ if (state & ERTS_PSFLG_EXITING) {
+ /*
+ * Process need to schedule out in order
+ * to terminate. Prepare this a bit...
+ */
+ ASSERT(c_p->flags & F_DELAY_GC);
+
+ c_p->flags &= ~F_DELAY_GC;
+ c_p->arity = 0;
+ c_p->current = NULL;
+ *get_outp = 1;
+ *msgpp = NULL;
+ return consumed_reds;
+ }
+
+ msgp = PEEK_MESSAGE(c_p);
+ if (msgp) {
+ *get_outp = 0;
+ *msgpp = msgp;
+ return consumed_reds;
+ }
+
+ if (left_reds <= 0) {
+ *get_outp = -1; /* yield */
+ *msgpp = NULL;
+
+ ASSERT(consumed_reds >= (fcalls - neg_o_reds));
+ return consumed_reds;
+ }
+
+ ASSERT(!c_p->sig_qs.cont);
+ /* Go fetch again... */
+ }
+}
+
+static int
+handle_trace_change_state(Process *c_p,
+ ErtsSigRecvTracing *tracing,
+ Uint16 type,
+ ErtsMessage *sig,
+ ErtsMessage ***next_nm_sig)
+{
+ ErtsSigTraceInfo *trace_info = (ErtsSigTraceInfo *) sig;
+ ErtsMessage **next = *next_nm_sig;
+ int msgs_active, old_msgs_active = !!tracing->messages.active;
+
+ ASSERT(sig == *next);
+
+ erts_proc_lock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+
+ ERTS_TRACE_FLAGS(c_p) |= trace_info->flags_on;
+ ERTS_TRACE_FLAGS(c_p) &= ~trace_info->flags_off;
+ if (is_value(trace_info->tracer))
+ erts_tracer_replace(&c_p->common, trace_info->tracer);
+
+ erts_proc_unlock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+
+ remove_nm_sig(c_p, sig, next_nm_sig);
+ destroy_trace_info(trace_info);
+ /*
+ * Adjust tracing state according to modifications made by
+ * the trace info signal...
+ */
+ adjust_tracing_state(c_p, tracing, 0);
+ msgs_active = !!tracing->messages.active;
+
+ if (old_msgs_active ^ msgs_active) {
+ if (msgs_active) {
+ ASSERT(!tracing->messages.next);
+ tracing->messages.next = next;
+ }
+ else {
+ ASSERT(tracing->messages.next);
+ tracing->messages.next = NULL;
+ }
+ }
+
+ ASSERT(!msgs_active || tracing->messages.next);
+
+ return msgs_active;
+}
+
+static void
+getting_unlinked(Process *c_p, Eterm unlinker)
+{
+ trace_proc(c_p, ERTS_PROC_LOCK_MAIN, c_p,
+ am_getting_unlinked, unlinker);
+}
+
+static void
+getting_linked(Process *c_p, Eterm linker)
+{
+ trace_proc(c_p, ERTS_PROC_LOCK_MAIN, c_p,
+ am_getting_linked, linker);
+}
+
+static ERTS_INLINE void
+handle_message_enqueued_tracing(Process *c_p,
+ ErtsSigRecvTracing *tracing,
+ ErtsMessage *msg)
+{
+ ASSERT(ERTS_SIG_IS_INTERNAL_MSG(msg));
+
+#if defined(USE_VM_PROBES)
+ if (tracing->messages.vm_probes && DTRACE_ENABLED(message_queued)) {
+ Sint tok_label = 0;
+ Sint tok_lastcnt = 0;
+ Sint tok_serial = 0;
+ Eterm seq_trace_token = ERL_MESSAGE_TOKEN(msg);
+
+ if (seq_trace_token != NIL && is_tuple(seq_trace_token)) {
+ tok_label = signed_val(SEQ_TRACE_T_LABEL(seq_trace_token));
+ tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(seq_trace_token));
+ tok_serial = signed_val(SEQ_TRACE_T_SERIAL(seq_trace_token));
+ }
+ /* Message intentionally not passed... */
+ DTRACE6(message_queued,
+ tracing->messages.receiver_name,
+ size_object(ERL_MESSAGE_TERM(msg)),
+ c_p->sig_qs.len,
+ tok_label, tok_lastcnt, tok_serial);
+ }
+#endif
+
+ if (tracing->messages.receive_trace && tracing->messages.event->on) {
+ ASSERT(IS_TRACED(c_p));
+ trace_receive(c_p,
+ ERL_MESSAGE_FROM(msg),
+ ERL_MESSAGE_TERM(msg),
+ tracing->messages.event);
+ }
+}
+
+static int
+handle_msg_tracing(Process *c_p, ErtsSigRecvTracing *tracing,
+ ErtsMessage ***next_nm_sig)
+{
+ ErtsMessage **next_sig, *sig;
+ int cnt = 0, limit = ERTS_PROC_SIG_TRACE_COUNT_LIMIT;
+
+ ASSERT(tracing->messages.next);
+ next_sig = tracing->messages.next;
+ sig = *next_sig;
+
+ /*
+ * Receive tracing active. Handle all messages
+ * until next non-message signal...
+ */
+
+ while (sig && ERTS_SIG_IS_MSG(sig)) {
+ if (cnt > limit) {
+ tracing->messages.next = next_sig;
+ return -1; /* Yield... */
+ }
+ if (ERTS_SIG_IS_EXTERNAL_MSG(sig)) {
+ cnt++;
+ if (!erts_decode_dist_message(c_p, ERTS_PROC_LOCK_MAIN,
+ sig, 0)) {
+ /* Bad dist message; remove it... */
+ remove_mq_m_sig(c_p, sig, next_sig, next_nm_sig);
+ sig = *next_sig;
+ continue;
+ }
+ }
+ handle_message_enqueued_tracing(c_p, tracing, sig);
+ cnt++;
+
+ next_sig = &(*next_sig)->next;
+ sig = *next_sig;
+ }
+
+ tracing->messages.next = next_sig;
+
+ if (!sig) {
+ ASSERT(!*next_nm_sig);
+ return 1; /* end... */
+ }
+
+ ASSERT(*next_nm_sig);
+ ASSERT(**next_nm_sig == sig);
+
+ /* Next signal a non-message signal... */
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ /*
+ * Return and handle the non-message signal...
+ */
+
+ return 0;
+}
+
+/*
+ * ERTS_INSPECT_MSGQ_KEEP_OH_MSGS == 0 will move off heap messages
+ * into the heap of the inspected process if off_heap_message_queue
+ * is false when process_info(_, messages) is called. That is, the
+ * following GC will have more data in the rootset compared to the
+ * scenario when process_info(_, messages) had not been called.
+ *
+ * ERTS_INSPECT_MSGQ_KEEP_OH_MSGS != 0 will keep off heap messages
+ * off heap when process_info(_, messages) is called regardless of
+ * the off_heap_message_queue setting of the process. That is, it
+ * will change the following execution of the process as little as
+ * possible.
+ */
+#define ERTS_INSPECT_MSGQ_KEEP_OH_MSGS 1
+
+Uint
+erts_proc_sig_prep_msgq_for_inspection(Process *c_p, Process *rp,
+ ErtsProcLocks rp_locks,
+ ErtsMessageInfo *mip)
+{
+ Uint tot_heap_size;
+ ErtsMessage *mp, **mpp;
+ Sint i;
+ int self_on_heap;
+
+ /*
+ * Prepare the message queue for inspection
+ * by process_info().
+ *
+ *
+ * - Decode all messages on external format
+ * - Remove all corrupt dist messages from queue
+ * - Save pointer to, and heap size need of each
+ * message in the mip array.
+ * - Return total heap size need for all messages
+ * that needs to be copied.
+ *
+ * If ERTS_INSPECT_MSGQ_KEEP_OH_MSGS == 0:
+ * - In case off heap messages is disabled and
+ * we are inspecting our own queue, move all
+ * off heap data into the heap.
+ */
+
+ /*
+ * All non-message signals *need* to have been
+ * handled before calling this functions...
+ */
+ ASSERT(!rp->sig_qs.cont);
+ ASSERT(!rp->sig_qs.nmsigs.next && !rp->sig_qs.nmsigs.last);
+
+ self_on_heap = c_p == rp && !(c_p->flags & F_OFF_HEAP_MSGQ);
+
+ tot_heap_size = 0;
+ i = 0;
+ mpp = &rp->sig_qs.first;
+ mp = rp->sig_qs.first;
+ while (mp) {
+ Eterm msg = ERL_MESSAGE_TERM(mp);
+
+ mip[i].size = 0;
+
+ if (ERTS_SIG_IS_EXTERNAL_MSG(mp)) {
+ /* decode it... */
+ if (mp->data.attached)
+ erts_decode_dist_message(rp, rp_locks, mp,
+ ERTS_INSPECT_MSGQ_KEEP_OH_MSGS);
+
+ msg = ERL_MESSAGE_TERM(mp);
+
+ if (is_non_value(msg)) {
+ ErtsMessage *bad_mp = mp;
+ /*
+ * Bad distribution message; remove
+ * it from the queue...
+ */
+ ASSERT(!mp->data.attached);
+
+ ASSERT(*mpp == bad_mp);
+
+ remove_iq_m_sig(rp, mp, mpp);
+
+ mp = *mpp;
+
+ bad_mp->next = NULL;
+ erts_cleanup_messages(bad_mp);
+ continue;
+ }
+ }
+
+ ASSERT(is_value(msg));
+
+#if ERTS_INSPECT_MSGQ_KEEP_OH_MSGS
+ if (is_not_immed(msg) && (!self_on_heap || mp->data.attached)) {
+ Uint sz = size_object(msg);
+ mip[i].size = sz;
+ tot_heap_size += sz;
+ }
+#else
+ if (self_on_heap) {
+ if (mp->data.attached) {
+ ErtsMessage *tmp = NULL;
+ if (mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ erts_link_mbuf_to_proc(rp, mp->data.heap_frag);
+ mp->data.attached = NULL;
+ }
+ else {
+ /*
+ * Need to replace the message reference since
+ * we will get references to the message data
+ * from the heap...
+ */
+ ErtsMessage **mpp;
+ tmp = erts_alloc_message(0, NULL);
+ sys_memcpy((void *) tmp->m, (void *) mp->m,
+ sizeof(Eterm)*ERL_MESSAGE_REF_ARRAY_SZ);
+ mpp = i == 0 ? &rp->sig_qs.first : &mip[i-1].msgp->next;
+ erts_msgq_replace_msg_ref(&rp->msg, tmp, mpp);
+ erts_save_message_in_proc(rp, mp);
+ mp = tmp;
+ }
+ }
+ }
+ else if (is_not_immed(msg)) {
+ Uint sz = size_object(msg);
+ mip[i].size = sz;
+ tot_heap_size += sz;
+ }
+
+#endif
+
+ mip[i].msgp = mp;
+ i++;
+ mpp = &mp->next;
+ mp = mp->next;
+ }
+
+ return tot_heap_size;
+}
+
+static ERTS_INLINE void
+move_msg_to_heap(Process *c_p, ErtsMessage *mp)
+{
+ /*
+ * We leave not yet decoded distribution messages
+ * as they are in the queue since it is not
+ * possible to determine a maximum size until
+ * actual decoding...
+ *
+ * We also leave combined messages as they are...
+ */
+ if (ERTS_SIG_IS_INTERNAL_MSG(mp)
+ && mp->data.attached
+ && mp->data.attached != ERTS_MSG_COMBINED_HFRAG) {
+ ErlHeapFragment *bp;
+
+ bp = erts_message_to_heap_frag(mp);
+
+ if (bp->next)
+ erts_move_multi_frags(&c_p->htop, &c_p->off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ, 0);
+ else
+ erts_copy_one_frag(&c_p->htop, &c_p->off_heap, bp,
+ mp->m, ERL_MESSAGE_REF_ARRAY_SZ);
+
+ mp->data.heap_frag = NULL;
+ free_message_buffer(bp);
+ }
+}
+
+void
+erts_proc_sig_move_msgs_to_heap(Process *c_p)
+{
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(c_p);
+
+ ERTS_FOREACH_SIG_PRIVQS(c_p, sig, move_msg_to_heap(c_p, sig));
+
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(c_p);
+}
+
+
+BIF_RETTYPE
+erts_internal_dirty_process_handle_signals_1(BIF_ALIST_1)
+{
+ erts_aint32_t state, dirty, noproc;
+ int busy;
+ Process *rp;
+
+ if (BIF_P != erts_dirty_process_signal_handler
+ && BIF_P != erts_dirty_process_signal_handler_high
+ && BIF_P != erts_dirty_process_signal_handler_max)
+ BIF_ERROR(BIF_P, EXC_NOTSUP);
+
+ if (is_not_internal_pid(BIF_ARG_1))
+ BIF_RET(am_false);
+
+ rp = erts_proc_lookup_raw(BIF_ARG_1);
+ if (!rp)
+ BIF_RET(am_noproc);
+
+ state = erts_atomic32_read_nob(&rp->state);
+ dirty = (state & (ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS));
+ if (!dirty)
+ BIF_RET(am_normal);
+
+ busy = erts_proc_trylock(rp, ERTS_PROC_LOCK_MAIN) == EBUSY;
+
+ state = erts_atomic32_read_mb(&rp->state);
+ noproc = (state & ERTS_PSFLG_FREE);
+ dirty = (state & (ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS));
+
+ if (busy) {
+ if (noproc)
+ BIF_RET(am_noproc);
+ if (dirty)
+ BIF_RET(am_more); /* try again... */
+ BIF_RET(am_normal); /* will handle signals itself... */
+ }
+ else {
+ erts_aint32_t state;
+ int done;
+ Eterm res = am_false;
+ int reds = 0;
+
+ if (noproc)
+ res = am_noproc;
+ else if (!dirty)
+ res = am_normal; /* will handle signals itself... */
+ else {
+ reds = ERTS_BIF_REDS_LEFT(BIF_P);
+ done = erts_proc_sig_handle_incoming(rp, &state, &reds,
+ reds, 0);
+ if (done || (state & ERTS_PSFLG_EXITING))
+ res = am_ok;
+ else
+ res = am_more;
+ }
+
+ erts_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
+
+ if (reds)
+ BUMP_REDS(BIF_P, reds);
+
+ BIF_RET(res);
+ }
+}
+
+static void
+debug_foreach_sig_heap_frags(ErlHeapFragment *hfrag,
+ void (*oh_func)(ErlOffHeap *, void *),
+ void *arg)
+{
+ ErlHeapFragment *hf = hfrag;
+ while (hf) {
+ oh_func(&(hf->off_heap), arg);
+ hf = hf->next;
+ }
+}
+
+static void
+debug_foreach_sig_fake_oh(Eterm term,
+ void (*oh_func)(ErlOffHeap *, void *),
+ void *arg)
+{
+ if (is_external(term)) {
+ ErlOffHeap oh;
+ oh.overhead = 0;
+ oh.first = ((struct erl_off_heap_header *)
+ (char *) external_thing_ptr(term));
+ ASSERT(!oh.first->next);
+ oh_func(&oh, arg);
+ }
+
+}
+
+void
+erts_proc_sig_debug_foreach_sig(Process *c_p,
+ void (*msg_func)(ErtsMessage *, void *),
+ void (*oh_func)(ErlOffHeap *, void *),
+ void (*mon_func)(ErtsMonitor *, void *),
+ void (*lnk_func)(ErtsLink *, void *),
+ void *arg)
+{
+ ErtsMessage *queue[] = {c_p->sig_qs.first, c_p->sig_qs.cont, c_p->sig_inq.first};
+ int qix;
+
+ for (qix = 0; qix < sizeof(queue)/sizeof(queue[0]); qix++) {
+ ErtsMessage *sig;
+ for (sig = queue[qix]; sig; sig = sig->next) {
+
+ if (ERTS_SIG_IS_MSG(sig))
+ msg_func(sig, arg);
+ else {
+ Eterm tag;
+ Uint16 type;
+ int op;
+
+ ASSERT(sig);
+ ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ tag = ((ErtsSignal *) sig)->common.tag;
+ type = ERTS_PROC_SIG_TYPE(tag);
+ op = ERTS_PROC_SIG_OP(tag);
+
+ switch (op) {
+
+ case ERTS_SIG_Q_OP_EXIT:
+ case ERTS_SIG_Q_OP_EXIT_LINKED:
+ case ERTS_SIG_Q_OP_MONITOR_DOWN:
+ switch (type) {
+ case ERTS_SIG_Q_TYPE_GEN_EXIT:
+ debug_foreach_sig_heap_frags(&sig->hfrag, oh_func, arg);
+ break;
+ case ERTS_LNK_TYPE_PORT:
+ case ERTS_LNK_TYPE_PROC:
+ case ERTS_LNK_TYPE_DIST_PROC:
+ lnk_func((ErtsLink *) sig, arg);
+ break;
+ case ERTS_MON_TYPE_PORT:
+ case ERTS_MON_TYPE_PROC:
+ case ERTS_MON_TYPE_DIST_PROC:
+ case ERTS_MON_TYPE_NODE:
+ mon_func((ErtsMonitor *) sig, arg);
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Unexpected sig type");
+ break;
+ }
+ break;
+
+ case ERTS_SIG_Q_OP_PERSISTENT_MON_MSG:
+ debug_foreach_sig_heap_frags(&sig->hfrag, oh_func, arg);
+ break;
+
+ case ERTS_SIG_Q_OP_DEMONITOR:
+ if (type == ERTS_SIG_Q_TYPE_DIST_PROC_DEMONITOR) {
+ debug_foreach_sig_fake_oh(((ErtsSigDistProcDemonitor *) sig)->ref,
+ oh_func, arg);
+ break;
+ }
+ /* Fall through... */
+
+ case ERTS_SIG_Q_OP_MONITOR:
+ mon_func((ErtsMonitor *) sig, arg);
+ break;
+
+ case ERTS_SIG_Q_OP_UNLINK:
+ if (type == ERTS_SIG_Q_TYPE_DIST_LINK) {
+ debug_foreach_sig_fake_oh(((ErtsSigDistLinkOp *) sig)->remote,
+ oh_func, arg);
+ break;
+ }
+ /* Fall through... */
+
+ case ERTS_SIG_Q_OP_LINK:
+ lnk_func((ErtsLink *) sig, arg);
+ break;
+
+ case ERTS_SIG_Q_OP_GROUP_LEADER: {
+ ErtsSigGroupLeader *sgl = (ErtsSigGroupLeader *) sig;
+ oh_func(&sgl->oh, arg);
+ break;
+ }
+
+ case ERTS_SIG_Q_OP_TRACE_CHANGE_STATE:
+ break;
+
+ default:
+ ERTS_INTERNAL_ERROR("Unknown signal");
+ break;
+ }
+
+ }
+ }
+ }
+}
+
+#ifdef ERTS_PROC_SIG_HARD_DEBUG
+
+static void
+chk_eterm(Process *c_p, int privq, ErtsMessage *mp, Eterm term)
+{
+ ErlHeapFragment *bp;
+ Eterm *ptr = NULL;
+
+ switch (primary_tag(term)) {
+ case TAG_PRIMARY_IMMED1:
+ return;
+ case TAG_PRIMARY_LIST:
+ ptr = list_val(term);
+ ERTS_ASSERT(!is_header(CAR(ptr)));
+ ERTS_ASSERT(!is_header(CDR(ptr)));
+ break;
+ case TAG_PRIMARY_BOXED:
+ ptr = boxed_val(term);
+ ERTS_ASSERT(is_header(*ptr));
+ break;
+ case TAG_PRIMARY_HEADER:
+ default:
+ ERTS_INTERNAL_ERROR("Not valid term");
+ break;
+ }
+
+ if (erts_is_literal(term, ptr))
+ return;
+
+ for (bp = erts_message_to_heap_frag(mp); bp; bp = bp->next) {
+ if (bp->mem <= ptr && ptr < bp->mem + bp->used_size)
+ return;
+ bp = bp->next;
+ }
+
+ ERTS_ASSERT(privq);
+ ASSERT(erts_dbg_within_proc(ptr, c_p, NULL));
+}
+
+static Sint
+proc_sig_hdbg_check_queue(Process *proc,
+ int privq,
+ ErtsMessage **sig_next,
+ ErtsMessage **sig_last,
+ ErtsMessage **sig_nm_next,
+ ErtsMessage **sig_nm_last,
+ ErtsSigRecvTracing *tracing,
+ int *found_saved_last_p,
+ erts_aint32_t sig_psflg)
+{
+ ErtsMessage **next, *sig, **nm_next, **nm_last;
+ int last_nm_sig_found, nm_sigs = 0, found_next_trace = 0,
+ found_save = 0, last_sig_found = 0, found_saved_last = 0;
+ Sint msg_len = 0;
+ ErtsMessage **next_trace = tracing ? tracing->messages.next : NULL;
+ ErtsMessage **save = proc->sig_qs.save;
+ ErtsMessage **saved_last = proc->sig_qs.saved_last;
+
+
+ nm_next = sig_nm_next;
+ nm_last = sig_nm_last;
+ next = sig_next;
+ sig = *sig_next;
+
+ last_nm_sig_found = !nm_last;
+ if (last_nm_sig_found)
+ ERTS_ASSERT(!nm_next);
+ else
+ ERTS_ASSERT(nm_next);
+
+ while (1) {
+ ErtsSignal *nm_sig;
+
+ if (next == sig_last) {
+ ASSERT(!*next);
+ last_sig_found = 1;
+ }
+
+ if (next == save)
+ found_save = 1;
+
+ if (next == saved_last)
+ found_saved_last = 1;
+
+ if (next == next_trace) {
+ found_next_trace = 1;
+ ERTS_ASSERT(nm_sigs == 0);
+ }
+
+ while (sig && ERTS_SIG_IS_MSG(sig)) {
+ int i;
+ if (ERTS_SIG_IS_EXTERNAL_MSG(sig))
+ i = 1;
+ else
+ i = 0;
+ for (; i < ERL_MESSAGE_REF_ARRAY_SZ; i++)
+ chk_eterm(proc, privq, sig, sig->m[i]);
+
+ msg_len++;
+ next = &sig->next;
+ sig = sig->next;
+
+ if (next == sig_last) {
+ ASSERT(!*next);
+ last_sig_found = 1;
+ }
+
+ if (next == save)
+ found_save = 1;
+
+ if (next == saved_last)
+ found_saved_last = 1;
+
+ if (next == next_trace) {
+ found_next_trace = 1;
+ ERTS_ASSERT(nm_sigs == 0);
+ }
+ }
+
+ if (!sig)
+ break;
+
+ nm_sigs++;
+
+ ERTS_ASSERT(!last_nm_sig_found);
+ ERTS_ASSERT(ERTS_SIG_IS_NON_MSG(sig));
+
+ nm_sig = (ErtsSignal *) sig;
+
+ ERTS_ASSERT(nm_next == next);
+
+ if (nm_last == next) {
+ ASSERT(!nm_sig->common.specific.next);
+ last_nm_sig_found = 1;
+ }
+
+ nm_next = nm_sig->common.specific.next;
+ next = &nm_sig->common.next;
+ sig = nm_sig->common.next;
+
+ }
+
+ if (!privq) {
+ /* outer queue */
+ ERTS_ASSERT(!found_save);
+ ERTS_ASSERT(!found_saved_last);
+ }
+ else if (privq > 0) {
+ /* middle queue */
+ ERTS_ASSERT(!next_trace || found_next_trace);
+ ERTS_ASSERT(!found_save);
+ if (!found_saved_last_p) {
+ ERTS_ASSERT(!found_saved_last
+ || (proc->flags & F_DEFERRED_SAVED_LAST));
+ }
+ else {
+ if (*found_saved_last_p) {
+ ERTS_ASSERT(!found_saved_last);
+ ERTS_ASSERT(!(proc->flags & F_DEFERRED_SAVED_LAST));
+ }
+ else if (saved_last) {
+ ERTS_ASSERT(found_saved_last);
+ ERTS_ASSERT(proc->flags & F_DEFERRED_SAVED_LAST);
+ }
+ *found_saved_last_p |= found_saved_last;
+ }
+ }
+ else {
+ /* inner queue */
+ ERTS_ASSERT(!found_next_trace);
+ ERTS_ASSERT(nm_sigs == 0);
+ ERTS_ASSERT(found_save);
+ ERTS_ASSERT(!saved_last
+ || (found_saved_last
+ || (proc->flags & F_DEFERRED_SAVED_LAST)));
+ if (found_saved_last_p)
+ *found_saved_last_p |= found_saved_last;
+ }
+
+ ERTS_ASSERT(last_nm_sig_found);
+ ERTS_ASSERT(last_sig_found);
+
+ if (sig_psflg != ERTS_PSFLG_FREE) {
+ erts_aint32_t state = erts_atomic32_read_nob(&proc->state);
+ ERTS_ASSERT(nm_sigs ? !!(state & sig_psflg) : !(state & sig_psflg));
+ }
+
+ return msg_len;
+}
+
+void
+erts_proc_sig_hdbg_check_priv_queue(Process *p, char *what, char *file, int line)
+{
+ int found_saved_last = 0;
+ Sint len1, len2;
+ ERTS_LC_ASSERT(erts_thr_progress_is_blocking()
+ || ERTS_PROC_IS_EXITING(p)
+ || (ERTS_PROC_LOCK_MAIN
+ & erts_proc_lc_my_proc_locks(p)));
+ len1 = proc_sig_hdbg_check_queue(p,
+ -1,
+ &p->sig_qs.first,
+ p->sig_qs.last,
+ NULL,
+ NULL,
+ NULL,
+ &found_saved_last,
+ ERTS_PSFLG_FREE);
+ len2 = proc_sig_hdbg_check_queue(p,
+ 1,
+ &p->sig_qs.cont,
+ p->sig_qs.cont_last,
+ p->sig_qs.nmsigs.next,
+ p->sig_qs.nmsigs.last,
+ NULL,
+ &found_saved_last,
+ ERTS_PSFLG_SIG_Q);
+ if (p->sig_qs.saved_last)
+ ERTS_ASSERT(found_saved_last);
+ ERTS_ASSERT(p->sig_qs.len == len1 + len2);
+}
+
+void
+erts_proc_sig_hdbg_check_in_queue(Process *p, char *what, char *file, int line)
+{
+ Sint len;
+ ERTS_LC_ASSERT(erts_thr_progress_is_blocking()
+ || ERTS_PROC_IS_EXITING(p)
+ || (ERTS_PROC_LOCK_MSGQ
+ & erts_proc_lc_my_proc_locks(p)));
+ len = proc_sig_hdbg_check_queue(p,
+ 0,
+ &p->sig_inq.first,
+ p->sig_inq.last,
+ p->sig_inq.nmsigs.next,
+ p->sig_inq.nmsigs.last,
+ NULL,
+ NULL,
+ ERTS_PSFLG_SIG_IN_Q);
+ ASSERT(p->sig_inq.len == len);
+}
+
+#endif
diff --git a/erts/emulator/beam/erl_proc_sig_queue.h b/erts/emulator/beam/erl_proc_sig_queue.h
new file mode 100644
index 0000000000..433e30ce4a
--- /dev/null
+++ b/erts/emulator/beam/erl_proc_sig_queue.h
@@ -0,0 +1,665 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+/*
+ * Description: Process signal queue implementation.
+ *
+ * Currently the following signals are handled:
+ * - Messages
+ * - Exit
+ * - Monitor
+ * - Demonitor
+ * - Monitor down
+ * - Persistent monitor message
+ * - Link
+ * - Unlink
+ * - Group leader
+ * - Trace change
+ *
+ * The signal queue consists of three parts:
+ * - Outer queue (sig_inq field in process struct)
+ * - Middle queue (sig_qs field in process struct)
+ * - Inner queue (sig_qs field in process struct)
+ *
+ * Incoming signals are placed in the outer queue
+ * by other processes, ports, or by the runtime system
+ * itself. This queue is protected by the msgq process
+ * lock and may be accessed by any other entity. While
+ * a signal is located in the outer queue, it is still
+ * in transit between sender and receiver.
+ *
+ * The middle and the inner queues are private to the
+ * receiving process and can only be accessed while
+ * holding the main process lock. The signal changes
+ * from being in transit to being received while in
+ * the middle queue. Non-message signals are handled
+ * immediately upon reception while message signals
+ * are moved into the inner queue.
+ *
+ * In the outer and middle queues both message signals
+ * and non-message signals are mixed. Signals in these
+ * queues are referenced using two single linked lists.
+ * One single linked list that go through all signals
+ * in the queue and another single linked list that
+ * goes through only non-message signals. The list
+ * through the non-message signals is used for fast
+ * access to these signals in the middle queue, since
+ * these should be handled immediately upon reception.
+ *
+ * The inner queue consists only of one single linked
+ * list through the message signals. A receive
+ * expression can only operate on messages once they
+ * have entered the inner queue.
+ *
+ * Author: Rickard Green
+ */
+
+#ifndef ERTS_PROC_SIG_QUEUE_H_TYPE__
+#define ERTS_PROC_SIG_QUEUE_H_TYPE__
+
+#if 0
+# define ERTS_PROC_SIG_HARD_DEBUG
+#endif
+
+struct erl_mesg;
+
+typedef struct {
+ struct erl_mesg *next;
+ union {
+ struct erl_mesg **next;
+ void *attachment;
+ } specific;
+ Eterm tag;
+} ErtsSignalCommon;
+
+#define ERTS_SIG_HANDLE_REDS_MAX_PREFERED (CONTEXT_REDS/40)
+
+#ifdef ERTS_PROC_SIG_HARD_DEBUG
+# define ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE(P) \
+ ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE__((P), "")
+# define ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(P) \
+ ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__((P), "")
+# define ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE__(P, What) \
+ erts_proc_sig_hdbg_check_in_queue((P), (What), __FILE__, __LINE__)
+# define ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__(P, What) \
+ erts_proc_sig_hdbg_check_priv_queue((P), (What), __FILE__, __LINE__)
+struct process;
+void erts_proc_sig_hdbg_check_priv_queue(struct process *c_p, char *what,
+ char *file, int line);
+void erts_proc_sig_hdbg_check_in_queue(struct process *c_p, char *what,
+ char *file, int line);
+#else
+# define ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE(P)
+# define ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE(P)
+# define ERTS_HDBG_CHECK_SIGNAL_IN_QUEUE__(P, What)
+#define ERTS_HDBG_CHECK_SIGNAL_PRIV_QUEUE__(P, What)
+#endif
+
+#endif
+
+#if !defined(ERTS_PROC_SIG_QUEUE_H__) && !defined(ERTS_PROC_SIG_QUEUE_TYPE_ONLY)
+#define ERTS_PROC_SIG_QUEUE_H__
+
+struct dist_entry_;
+
+/*
+ * Send operations of currently supported process signals follow...
+ */
+
+/**
+ *
+ * @brief Send an exit signal to a process.
+ *
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] to Identifier of local process
+ * to send signal to.
+ *
+ * @param[in] reason Exit reason.
+ *
+ * @param[in] token Seq trace token.
+ *
+ * @param[in] normal_kills If non-zero, also normal exit
+ * reason will kill the receiver
+ * if it is not trapping exit.
+ *
+ */
+void
+erts_proc_sig_send_exit(Process *c_p, Eterm from, Eterm to,
+ Eterm reason, Eterm token, int normal_kills);
+
+/**
+ *
+ * @brief Send an exit signal due to broken link to a process.
+ *
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] lnk Pointer to link structure
+ * from the sending side. It
+ * should contain information
+ * about receiver.
+ *
+ * @param[in] reason Exit reason.
+ *
+ * @param[in] token Seq trace token.
+ *
+ */
+void
+erts_proc_sig_send_link_exit(Process *c_p, Eterm from, ErtsLink *lnk,
+ Eterm reason, Eterm token);
+
+/**
+ *
+ * @brief Send an link signal to a process.
+ *
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] lnk Pointer to link structure to
+ * insert on receiver side.
+ *
+ * @return A non-zero value if
+ * signal was successfully
+ * sent. If a zero, value
+ * the signal was not sent
+ * due to the receiver not
+ * existing. The sender
+ * needs to deallocate the
+ * link structure.
+ *
+ */
+int
+erts_proc_sig_send_link(Process *c_p, Eterm to, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Send an unlink signal to a process.
+ *
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] lnk Pointer to link structure from
+ * the sending side. It should
+ * contain information about
+ * receiver.
+ */
+void
+erts_proc_sig_send_unlink(Process *c_p, ErtsLink *lnk);
+
+/**
+ *
+ * @brief Send an exit signal due to broken link to a process.
+ *
+ * This function is used instead of erts_proc_sig_send_link_exit()
+ * when the signal arrives via the distribution and
+ * no link structure is available.
+ *
+ * @param[in] dep Distribution entry of channel
+ * that the signal arrived on.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] reason Exit reason.
+ *
+ * @param[in] token Seq trace token.
+ *
+ */
+void
+erts_proc_sig_send_dist_link_exit(struct dist_entry_ *dep,
+ Eterm from, Eterm to,
+ Eterm reason, Eterm token);
+
+/**
+ *
+ * @brief Send an unlink signal to a process.
+ *
+ * This function is used instead of erts_proc_sig_send_unlink()
+ * when the signal arrives via the distribution and
+ * no link structure is available.
+ *
+ * @param[in] dep Distribution entry of channel
+ * that the signal arrived on.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ */
+void
+erts_proc_sig_send_dist_unlink(struct dist_entry_ *dep,
+ Eterm from, Eterm to);
+
+/**
+ *
+ * @brief Send a monitor down signal to a process.
+ *
+ * @param[in] mon Pointer to target monitor
+ * structure from the sending
+ * side. It should contain
+ * information about receiver.
+ *
+ * @param[in] reason Exit reason.
+ *
+ */
+void
+erts_proc_sig_send_monitor_down(ErtsMonitor *mon, Eterm reason);
+
+/**
+ *
+ * @brief Send a demonitor signal to a process.
+ *
+ * @param[in] mon Pointer to origin monitor
+ * structure from the sending
+ * side. It should contain
+ * information about receiver.
+ *
+ * @param[in] reason Exit reason.
+ *
+ */
+void
+erts_proc_sig_send_demonitor(ErtsMonitor *mon);
+
+/**
+ *
+ * @brief Send a monitor signal to a process.
+ *
+ * @param[in] mon Pointer to target monitor
+ * structure to insert on
+ * receiver side.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @return A non-zero value if
+ * signal was successfully
+ * sent. If a zero, value
+ * the signal was not sent
+ * due to the receiver not
+ * existing. The sender
+ * needs to deallocate the
+ * monitor structure.
+ *
+ */
+int
+erts_proc_sig_send_monitor(ErtsMonitor *mon, Eterm to);
+
+/**
+ *
+ * @brief Send a monitor down signal to a process.
+ *
+ * This function is used instead of erts_proc_sig_send_monitor_down()
+ * when the signal arrives via the distribution and
+ * no link structure is available.
+ *
+ * @param[in] dep Pointer to distribution entry
+ * of channel that the signal
+ * arrived on.
+ *
+ * @param[in] ref Reference identifying the monitor.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] reason Exit reason.
+ *
+ */
+void
+erts_proc_sig_send_dist_monitor_down(DistEntry *dep, Eterm ref,
+ Eterm from, Eterm to,
+ Eterm reason);
+
+/**
+ *
+ * @brief Send a demonitor signal to a process.
+ *
+ * This function is used instead of erts_proc_sig_send_demonitor()
+ * when the signal arrives via the distribution and
+ * no monitor structure is available.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] ref Reference identifying the monitor.
+ *
+ */
+void
+erts_proc_sig_send_dist_demonitor(Eterm to, Eterm ref);
+
+/**
+ *
+ * @brief Send a persistent monitor triggered signal to a process.
+ *
+ * Used by monitors that are not auto disabled such as for
+ * example 'time_offset' monitors.
+ *
+ * @param[in] type Monitor type.
+ *
+ * @param[in] key Monitor key.
+ *
+ * @param[in] from Identifier of sender.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] msg Message template.
+ *
+ * @param[in] msg_sz Heap size of message template.
+ *
+ */
+void
+erts_proc_sig_send_persistent_monitor_msg(Uint16 type, Eterm key,
+ Eterm from, Eterm to,
+ Eterm msg, Uint msg_sz);
+
+/**
+ *
+ * @brief Send a trace change signal to a process.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] on Trace flags to enable.
+ *
+ * @param[in] off Trace flags to disable.
+ *
+ * @param[in] tracer Tracer to set. If the non-value,
+ * tracer will not be changed.
+ *
+ */
+void
+erts_proc_sig_send_trace_change(Eterm to, Uint on, Uint off,
+ Eterm tracer);
+
+/**
+ *
+ * @brief Send a group leader signal to a process.
+ *
+ * Set group-leader of receiving process. If sent locally,
+ * a response message '{Ref, Result}' is sent to the original
+ * sender when performed where Ref is the reference passed
+ * as 'ref' argument, and Result is either 'true' or 'badarg'.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ * NULL if signal arrived via
+ * distribution.
+ *
+ * @param[in] to Identifier of receiver.
+ *
+ * @param[in] gl Identifier of new group leader.
+ *
+ * @param[in] ref Reference to use in response
+ * message to locally sending
+ * process (i.e., c_p when c_p
+ * is non-null).
+ *
+ */
+void
+erts_proc_sig_send_group_leader(Process *c_p, Eterm to, Eterm gl,
+ Eterm ref);
+
+/*
+ * End of send operations of currently supported process signals.
+ */
+
+
+/**
+ *
+ * @brief Handle incoming signals.
+ *
+ * Called by an ordinary scheduler in order to handle incoming
+ * signals for a process. The work is done on the middle part
+ * of the signal queue. The maximum amount of signals handled
+ * is limited by the amount of reductions given when calling.
+ * Note that a reduction does not necessarily map to a signal.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[out] statep Pointer to process state after
+ * signal handling. May not be NULL.
+ *
+ * @param[in,out] redsp Pointer to an integer containing
+ * reductions. On input, the amount
+ * of preferred reductions to be
+ * used by the call. On output, the
+ * amount of reductions consumed.
+ *
+ * @param[in] max_reds Absolute maximum of reductions
+ * to use. If the process cannot
+ * make progress after the preferred
+ * amount of reductions has been
+ * consumed, signal handling may
+ * proceed up to a maximum of
+ * 'max_reds' in order to make
+ * the process able to proceed
+ * with other tasks after handling
+ * has finished.
+ *
+ * @param[in] local_only If is zero, new signals may be
+ * fetched from the outer queue and
+ * put in the middle queue before
+ * signal handling is performed. If
+ * non-zero, no new signals will be
+ * fetched before handling begins.
+ *
+ * @return Returns a non-zero value, when
+ * no more signals to handle in the
+ * middle queue remain. A zero
+ * return value means that there
+ * remains signals in the middle
+ * queue.
+ */
+int
+erts_proc_sig_handle_incoming(Process *c_p, erts_aint32_t *statep,
+ int *redsp, int max_reds,
+ int local_only);
+
+/**
+ *
+ * @brief Handle remaining signals for an exiting process
+ *
+ * Called as part of termination of a process. It will handle
+ * remaining signals.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in,out] redsp Pointer to an integer containing
+ * reductions. On input, the amount
+ * of maximum reductions to be
+ * used by the call. On output, the
+ * amount of reductions consumed.
+ *
+ * @return Returns a non-zero value, when
+ * no more signals to handle in the
+ * middle queue remain. A zero
+ * return value means that there
+ * remains signals in the middle
+ * queue.
+ */
+int
+erts_proc_sig_handle_exit(Process *c_p, int *redsp);
+
+/**
+ *
+ * @brief Helper for loop_rec instruction.
+ *
+ * This function should only be called from the loop_rec
+ * instruction (or equivalents). It is called when loop_rec
+ * reach the end of the inner queue (which is the only
+ * part of the signal queue that receive is allowed to
+ * operate on). When called, this function tries to make
+ * more messages available in the inner queue. This by
+ * fetching signals from the outer queue to the middle
+ * queue and/or processing signals in the middle queue.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] fcalls Content of FCALLS in
+ * process_main()
+ *
+ * @param[in] neg_o_reds Content of neg_o_reds in
+ * process_main()
+ *
+ * @param[out] msgpp Pointer to pointer to next
+ * available message to process.
+ * If *msgpp == NULL, no more
+ * messages are available.
+ *
+ * @param[out] get_outp Pointer to an integer
+ * indicating how to respond
+ * if no more messages are
+ * available (msgpp). If integer
+ * is set to zero, loop_rec
+ * should jump to an appropriate
+ * wait instruction. If zero,
+ * the message queue lock remain
+ * locked since the test for
+ * more messages was done.
+ * If the integer is set to a
+ * value larger that zero, the
+ * process exited. If the integer
+ * is set to a value less than
+ * zero, the process is required
+ * to yield.
+ *
+ *
+ * @return The amount of reductions
+ * consumed.
+ *
+ */
+int
+erts_proc_sig_receive_helper(Process *c_p, int fcalls,
+ int neg_o_reds, ErtsMessage **msgpp,
+ int *get_outp);
+
+/**
+ *
+ * @brief Fetch signals from the outer queue
+ *
+ * Fetches signals from outer queue and places them in the
+ * middle queue ready for signal handling. If the middle
+ * queue is empty, only message signals were present in the
+ * outer queue, and no receive tracing has been enabled on
+ * the process, the middle queue is bypassed and messages
+ * are delivered directly to the inner queue instead.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ */
+void erts_proc_sig_fetch(Process *p);
+
+typedef struct {
+ Uint size;
+ ErtsMessage *msgp;
+} ErtsMessageInfo;
+
+/**
+ *
+ * @brief Prepare signal queue for inspection by process_info()
+ *
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ * @param[in] rp Pointer to process struct of
+ * process to inspect.
+ *
+ * @param[in] rp_locks Process locks held on 'rp'.
+ *
+ * @param[in] mip Pointer to array of
+ * ErtsMessageInfo structures.
+ *
+ */
+
+Uint erts_proc_sig_prep_msgq_for_inspection(Process *c_p,
+ Process *rp,
+ ErtsProcLocks rp_locks,
+ ErtsMessageInfo *mip);
+
+
+/**
+ *
+ * @brief Move message data of messages in private queues to heap
+ *
+ * Move message data of messages in private queues to the heap.
+ * This is part of GC of processes that uses on-heap message
+ * data.
+ *
+ * @param[in] c_p Pointer to process struct of
+ * currently executing process.
+ *
+ */
+void erts_proc_sig_move_msgs_to_heap(Process *c_p);
+
+/**
+ *
+ * @brief Size of signal in bytes.
+ *
+ * @param[in] sig Signal to inspect.
+ *
+ */
+Uint erts_proc_sig_signal_size(ErtsSignal *sig);
+
+
+/**
+ *
+ * @brief Clear seq trace tokens on all signals
+ *
+ * Assumes thread progress has been blocked!
+ *
+ * @param[in] c_p Pointer to process
+ *
+ */
+void
+erts_proc_sig_clear_seq_trace_tokens(Process *c_p);
+
+/**
+ * @brief Initialize this functionality
+ */
+void erts_proc_sig_queue_init(void);
+
+void
+erts_proc_sig_debug_foreach_sig(Process *c_p,
+ void (*msg_func)(ErtsMessage *, void *),
+ void (*oh_func)(ErlOffHeap *, void *),
+ void (*mon_func)(ErtsMonitor *, void *),
+ void (*lnk_func)(ErtsLink *, void *),
+ void *arg);
+
+extern Process *erts_dirty_process_signal_handler;
+extern Process *erts_dirty_process_signal_handler_high;
+extern Process *erts_dirty_process_signal_handler_max;
+
+#endif /* ERTS_PROC_SIG_QUEUE_H__ */
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 0d02d10ac9..7969025f57 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -53,6 +53,7 @@
#include "erl_nfunc_sched.h"
#include "erl_check_io.h"
#include "erl_poll.h"
+#include "erl_proc_sig_queue.h"
#define ERTS_CHECK_TIME_REDS CONTEXT_REDS
#define ERTS_DELAYED_WAKEUP_INFINITY (~(Uint64) 0)
@@ -431,7 +432,8 @@ typedef enum {
ERTS_PSTT_CLA, /* Copy Literal Area */
ERTS_PSTT_COHMQ, /* Change off heap message queue */
ERTS_PSTT_FTMQ, /* Flush trace msg queue */
- ERTS_PSTT_ETS_FREE_FIXATION
+ ERTS_PSTT_ETS_FREE_FIXATION,
+ ERTS_PSTT_PRIO_SIG /* Elevate prio on signal management */
} ErtsProcSysTaskType;
#define ERTS_MAX_PROC_SYS_TASK_ARGS 2
@@ -579,7 +581,6 @@ dbg_chk_aux_work_val(erts_aint32_t value)
valid |= ERTS_SSI_AUX_WORK_CNCLD_TMRS;
valid |= ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR;
valid |= ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP;
- valid |= ERTS_SSI_AUX_WORK_PENDING_EXITERS;
#if HAVE_ERTS_MSEG
valid |= ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK;
#endif
@@ -601,7 +602,6 @@ dbg_chk_aux_work_val(erts_aint32_t value)
#define ERTS_DBG_CHK_SSI_AUX_WORK(SSI)
#endif
-static void do_handle_pending_exiters(ErtsProcList *);
static void wake_scheduler(ErtsRunQueue *rq);
#if defined(ERTS_ENABLE_LOCK_CHECK)
@@ -666,8 +666,6 @@ erts_pre_init_process(void)
= "MISC_THR_PRGR";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_MISC_IX]
= "MISC";
- erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_PENDING_EXITERS_IX]
- = "PENDING_EXITERS";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_SET_TMO_IX]
= "SET_TMO";
erts_aux_work_flag_descr[ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX]
@@ -2531,27 +2529,6 @@ handle_mseg_cache_check(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiti
static ERTS_INLINE erts_aint32_t
-handle_pending_exiters(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiting)
-{
- ErtsProcList *pnd_xtrs;
- ErtsRunQueue *rq;
-
- rq = awdp->esdp->run_queue;
- unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_PENDING_EXITERS);
-
- erts_runq_lock(rq);
- pnd_xtrs = rq->procs.pending_exiters;
- rq->procs.pending_exiters = NULL;
- erts_runq_unlock(rq);
-
- if (erts_proclist_fetch(&pnd_xtrs, NULL))
- do_handle_pending_exiters(pnd_xtrs);
-
- return aux_work & ~ERTS_SSI_AUX_WORK_PENDING_EXITERS;
-}
-
-
-static ERTS_INLINE erts_aint32_t
handle_setup_aux_work_timer(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiting)
{
unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_SET_TMO);
@@ -2632,9 +2609,6 @@ handle_aux_work(ErtsAuxWorkData *awdp, erts_aint32_t orig_aux_work, int waiting)
HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_MISC,
handle_misc_aux_work);
- HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_PENDING_EXITERS,
- handle_pending_exiters);
-
HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_SET_TMO,
handle_setup_aux_work_timer);
@@ -5793,7 +5767,6 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online, int no_poll_th
rq->wakeup_other = 0;
rq->wakeup_other_reds = 0;
- rq->procs.pending_exiters = NULL;
rq->procs.context_switches = 0;
rq->procs.reductions = 0;
@@ -6328,11 +6301,36 @@ schedule_out_process(ErtsRunQueue *c_rq, erts_aint32_t state, Process *p,
int enqueue; /* < 0 -> use proxy */
ErtsRunQueue* runq;
+ ASSERT(!(state & (ERTS_PSFLG_DIRTY_IO_PROC
+ |ERTS_PSFLG_DIRTY_CPU_PROC))
+ || (BeamIsOpCode(*p->i, op_call_nif)
+ || BeamIsOpCode(*p->i, op_apply_bif)));
+
+ a = state;
+
+ /* Clear activ-sys if needed... */
+ while (1) {
+ n = e = a;
+ if (a & ERTS_PSFLG_ACTIVE_SYS) {
+ if (a & (ERTS_PSFLG_SIG_Q
+ | ERTS_PSFLG_SIG_IN_Q
+ | ERTS_PSFLG_SYS_TASKS))
+ break;
+ /* Clear active-sys */
+ n &= ~ERTS_PSFLG_ACTIVE_SYS;
+ }
+ a = erts_atomic32_cmpxchg_nob(&p->state, n, e);
+ if (a == e) {
+ a = n;
+ break;
+ }
+ }
+
if (!is_normal_sched)
running_flgs = ERTS_PSFLG_DIRTY_RUNNING|ERTS_PSFLG_DIRTY_RUNNING_SYS;
else {
running_flgs = ERTS_PSFLG_RUNNING|ERTS_PSFLG_RUNNING_SYS;
- if (state & ERTS_PSFLG_DIRTY_ACTIVE_SYS
+ if ((a & ERTS_PSFLG_DIRTY_ACTIVE_SYS)
&& (p->flags & (F_DELAY_GC|F_DISABLE_GC))) {
/*
* Delay dirty GC; will be enabled automatically
@@ -6345,14 +6343,12 @@ schedule_out_process(ErtsRunQueue *c_rq, erts_aint32_t state, Process *p,
*/
ASSERT(!(p->flags & (F_DIRTY_CLA | F_DIRTY_GC_HIBERNATE)));
- state = erts_atomic32_read_band_nob(&p->state,
- ~ERTS_PSFLG_DIRTY_ACTIVE_SYS);
- state &= ~ERTS_PSFLG_DIRTY_ACTIVE_SYS;
+ a = erts_atomic32_read_band_nob(&p->state,
+ ~ERTS_PSFLG_DIRTY_ACTIVE_SYS);
+ a &= ~ERTS_PSFLG_DIRTY_ACTIVE_SYS;
}
}
- a = state;
-
while (1) {
n = e = a;
@@ -6360,6 +6356,11 @@ schedule_out_process(ErtsRunQueue *c_rq, erts_aint32_t state, Process *p,
enqueue = ERTS_ENQUEUE_NOT;
+ ASSERT(((a & (ERTS_PSFLG_EXITING|ERTS_PSFLG_FREE))
+ != ERTS_PSFLG_EXITING)
+ || ((a & (ERTS_PSFLG_ACTIVE|ERTS_PSFLG_SUSPENDED))
+ == ERTS_PSFLG_ACTIVE));
+
n &= ~running_flgs;
if ((a & (ERTS_PSFLG_ACTIVE_SYS|ERTS_PSFLG_DIRTY_ACTIVE_SYS))
|| (a & (ERTS_PSFLG_ACTIVE|ERTS_PSFLG_SUSPENDED)) == ERTS_PSFLG_ACTIVE) {
@@ -6584,7 +6585,7 @@ change_proc_schedule_state(Process *p,
}
- *statep = a;
+ *statep = n;
return enqueue;
}
@@ -6609,6 +6610,95 @@ erts_schedule_process(Process *p, erts_aint32_t state, ErtsProcLocks locks)
schedule_process(p, state, locks);
}
+static ERTS_INLINE erts_aint32_t
+active_sys_enqueue(Process *p, erts_aint32_t state,
+ erts_aint32_t enable_flags, int status_locked)
+{
+ /*
+ * This function may or may not be called with status locke held.
+ * It always returns without the status lock held!
+ */
+ unsigned int prof_runnable_procs = erts_system_profile_flags.runnable_procs;
+ erts_aint32_t n, a = state, enq_prio = -1;
+ int slocked = status_locked;
+ int enqueue; /* < 0 -> use proxy */
+
+ /* Status lock prevents out of order "runnable proc" trace msgs */
+ ERTS_LC_ASSERT(slocked || !(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p)));
+ ERTS_LC_ASSERT(!slocked || (ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p)));
+
+ if (!prof_runnable_procs) {
+ if (slocked) {
+ erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
+ slocked = 0;
+ }
+ }
+ else {
+ if (!slocked) {
+ erts_proc_lock(p, ERTS_PROC_LOCK_STATUS);
+ slocked = !0;
+ }
+ }
+
+ ASSERT(!(state & ERTS_PSFLG_PROXY));
+
+ while (1) {
+ erts_aint32_t e;
+ n = e = a;
+
+ if (a & ERTS_PSFLG_FREE)
+ goto cleanup; /* We don't want to schedule free processes... */
+
+ enqueue = ERTS_ENQUEUE_NOT;
+ n |= enable_flags;
+ n |= ERTS_PSFLG_ACTIVE_SYS;
+ if (!(a & (ERTS_PSFLG_RUNNING
+ | ERTS_PSFLG_RUNNING_SYS
+ | ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS)))
+ enqueue = check_enqueue_in_prio_queue(p, &enq_prio, &n, a);
+ a = erts_atomic32_cmpxchg_mb(&p->state, n, e);
+ if (a == e)
+ break;
+ if (a == n && enqueue == ERTS_ENQUEUE_NOT)
+ goto cleanup;
+ }
+
+ if (prof_runnable_procs) {
+
+ if (!(a & (ERTS_PSFLG_ACTIVE_SYS
+ | ERTS_PSFLG_RUNNING
+ | ERTS_PSFLG_RUNNING_SYS
+ | ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS))
+ && (!(a & ERTS_PSFLG_ACTIVE) || (a & ERTS_PSFLG_SUSPENDED))) {
+ /* We activated a prevously inactive process */
+ profile_runnable_proc(p, am_active);
+ }
+
+ erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
+ slocked = 0;
+ }
+
+ add2runq(enqueue, enq_prio, p, n, NULL);
+
+cleanup:
+
+ if (slocked)
+ erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
+
+ ERTS_LC_ASSERT(!(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p)));
+
+ return n;
+}
+
+erts_aint32_t
+erts_proc_sys_schedule(Process *p, erts_aint32_t state, erts_aint32_t enable_flag)
+{
+ /* We are not allowed to call this function with status lock held... */
+ return active_sys_enqueue(p, state, enable_flag, 0);
+}
+
static int
schedule_process_sys_task(Process *p, erts_aint32_t prio, ErtsProcSysTask *st,
erts_aint32_t *fail_state_p)
@@ -6616,19 +6706,16 @@ schedule_process_sys_task(Process *p, erts_aint32_t prio, ErtsProcSysTask *st,
int res;
int locked;
ErtsProcSysTaskQs *stqs, *free_stqs;
- erts_aint32_t fail_state, state, a, n, enq_prio;
- int enqueue; /* < 0 -> use proxy */
- unsigned int prof_runnable_procs;
+ erts_aint32_t fail_state, state;
fail_state = *fail_state_p;
res = 1; /* prepare for success */
st->next = st->prev = st; /* Prep for empty prio queue */
state = erts_atomic32_read_nob(&p->state);
- prof_runnable_procs = erts_system_profile_flags.runnable_procs;
locked = 0;
free_stqs = NULL;
- if (state & ERTS_PSFLG_ACTIVE_SYS)
+ if (state & ERTS_PSFLG_SYS_TASKS)
stqs = NULL;
else {
alloc_qs:
@@ -6648,6 +6735,7 @@ schedule_process_sys_task(Process *p, erts_aint32_t prio, ErtsProcSysTask *st,
state = erts_atomic32_read_nob(&p->state);
if (state & fail_state) {
+ erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
*fail_state_p = (state & fail_state);
free_stqs = stqs;
res = 0;
@@ -6695,69 +6783,14 @@ schedule_process_sys_task(Process *p, erts_aint32_t prio, ErtsProcSysTask *st,
state = n;
}
-
- a = state;
- enq_prio = -1;
-
- /* Status lock prevents out of order "runnable proc" trace msgs */
- ERTS_LC_ASSERT(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p));
-
- if (!prof_runnable_procs) {
- erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
- locked = 0;
- }
-
- ASSERT(!(state & ERTS_PSFLG_PROXY));
-
- while (1) {
- erts_aint32_t e;
- n = e = a;
-
- if (a & ERTS_PSFLG_FREE)
- goto cleanup; /* We don't want to schedule free processes... */
-
- enqueue = ERTS_ENQUEUE_NOT;
- n |= ERTS_PSFLG_ACTIVE_SYS;
- if (!(a & (ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_DIRTY_RUNNING
- | ERTS_PSFLG_DIRTY_RUNNING_SYS)))
- enqueue = check_enqueue_in_prio_queue(p, &enq_prio, &n, a);
- a = erts_atomic32_cmpxchg_mb(&p->state, n, e);
- if (a == e)
- break;
- if (a == n && enqueue == ERTS_ENQUEUE_NOT)
- goto cleanup;
- }
-
- if (prof_runnable_procs) {
-
- if (!(a & (ERTS_PSFLG_ACTIVE_SYS
- | ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_DIRTY_RUNNING
- | ERTS_PSFLG_DIRTY_RUNNING_SYS))
- && (!(a & ERTS_PSFLG_ACTIVE) || (a & ERTS_PSFLG_SUSPENDED))) {
- /* We activated a prevously inactive process */
- profile_runnable_proc(p, am_active);
- }
-
- erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
- locked = 0;
- }
-
- add2runq(enqueue, enq_prio, p, n, NULL);
+ /* active_sys_enqueue() always return with status lock unlocked */
+ (void) active_sys_enqueue(p, state, ERTS_PSFLG_SYS_TASKS, locked);
cleanup:
- if (locked)
- erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
-
if (free_stqs)
proc_sys_task_queues_free(free_stqs);
- ERTS_LC_ASSERT(!(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p)));
-
return res;
}
@@ -8536,11 +8569,13 @@ static ERTS_INLINE void
cancel_suspend_of_suspendee(Process *p, ErtsProcLocks p_locks)
{
if (is_not_nil(p->suspendee)) {
+ ErtsMonitor *mon;
+ Eterm suspendee = p->suspendee;
Process *rp;
if (!(p_locks & ERTS_PROC_LOCK_STATUS))
erts_proc_lock(p, ERTS_PROC_LOCK_STATUS);
rp = erts_pid2proc(p, p_locks|ERTS_PROC_LOCK_STATUS,
- p->suspendee, ERTS_PROC_LOCK_STATUS);
+ suspendee, ERTS_PROC_LOCK_STATUS);
if (rp) {
erts_resume(rp, ERTS_PROC_LOCK_STATUS);
erts_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
@@ -8548,6 +8583,14 @@ cancel_suspend_of_suspendee(Process *p, ErtsProcLocks p_locks)
if (!(p_locks & ERTS_PROC_LOCK_STATUS))
erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
p->suspendee = NIL;
+
+ mon = erts_monitor_tree_lookup(p->suspend_monitors,
+ suspendee);
+ if (mon) {
+ erts_monitor_tree_delete(&p->suspend_monitors,
+ mon);
+ erts_monitor_suspend_destroy(erts_monitor_suspend(mon));
+ }
}
}
@@ -8706,8 +8749,7 @@ pid2proc_not_running(Process *c_p, ErtsProcLocks c_p_locks,
{
erts_aint32_t state;
state = erts_atomic32_read_nob(&rp->state);
- ASSERT((state & ERTS_PSFLG_PENDING_EXIT)
- || !(state & ERTS_PSFLG_RUNNING));
+ ASSERT(!(state & ERTS_PSFLG_RUNNING));
}
#endif
@@ -8762,7 +8804,7 @@ erts_pid2proc_nropt(Process *c_p, ErtsProcLocks c_p_locks,
static ERTS_INLINE int
do_bif_suspend_process(Process *c_p,
- ErtsSuspendMonitor *smon,
+ ErtsMonitorSuspend *smon,
Process *suspendee)
{
ASSERT(suspendee);
@@ -8795,21 +8837,25 @@ handle_pend_bif_sync_suspend(Process *suspendee,
suspender = erts_pid2proc(suspendee,
suspendee_locks,
suspender_pid,
- ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
+ ERTS_PROC_LOCK_STATUS);
if (suspender) {
+ ErtsMonitorSuspend *smon;
+ ErtsMonitor *mon;
+ mon = erts_monitor_tree_lookup(suspender->suspend_monitors,
+ suspendee->common.id);
+ smon = erts_monitor_suspend(mon);
+
ASSERT(is_nil(suspender->suspendee));
- if (!suspendee_alive)
- erts_delete_suspend_monitor(&suspender->suspend_monitors,
- suspendee->common.id);
+ if (!suspendee_alive) {
+ if (mon) {
+ erts_monitor_tree_delete(&suspender->suspend_monitors,
+ mon);
+ erts_monitor_suspend_destroy(smon);
+ }
+ }
else {
#ifdef DEBUG
- int res;
-#endif
- ErtsSuspendMonitor *smon;
- smon = erts_lookup_suspend_monitor(suspender->suspend_monitors,
- suspendee->common.id);
-#ifdef DEBUG
- res =
+ int res =
#endif
do_bif_suspend_process(suspendee, smon, suspendee);
ASSERT(!smon || res != 0);
@@ -8818,9 +8864,8 @@ handle_pend_bif_sync_suspend(Process *suspendee,
/* suspender is suspended waiting for suspendee to suspend;
resume suspender */
ASSERT(suspender != suspendee);
- resume_process(suspender, ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
- erts_proc_unlock(suspender,
- ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS);
+ resume_process(suspender, ERTS_PROC_LOCK_STATUS);
+ erts_proc_unlock(suspender, ERTS_PROC_LOCK_STATUS);
}
}
@@ -8838,26 +8883,29 @@ handle_pend_bif_async_suspend(Process *suspendee,
suspender = erts_pid2proc(suspendee,
suspendee_locks,
suspender_pid,
- ERTS_PROC_LOCK_LINK);
+ ERTS_PROC_LOCK_STATUS);
if (suspender) {
+ ErtsMonitorSuspend *smon;
+ ErtsMonitor *mon;
+ mon = erts_monitor_tree_lookup(suspender->suspend_monitors,
+ suspendee->common.id);
+ smon = erts_monitor_suspend(mon);
ASSERT(is_nil(suspender->suspendee));
- if (!suspendee_alive)
- erts_delete_suspend_monitor(&suspender->suspend_monitors,
- suspendee->common.id);
+ if (!suspendee_alive) {
+ if (mon) {
+ erts_monitor_tree_delete(&suspender->suspend_monitors,
+ mon);
+ erts_monitor_suspend_destroy(smon);
+ }
+ }
else {
#ifdef DEBUG
- int res;
+ int res =
#endif
- ErtsSuspendMonitor *smon;
- smon = erts_lookup_suspend_monitor(suspender->suspend_monitors,
- suspendee->common.id);
-#ifdef DEBUG
- res =
-#endif
- do_bif_suspend_process(suspendee, smon, suspendee);
+ do_bif_suspend_process(suspendee, smon, suspendee);
ASSERT(!smon || res != 0);
}
- erts_proc_unlock(suspender, ERTS_PROC_LOCK_LINK);
+ erts_proc_unlock(suspender, ERTS_PROC_LOCK_STATUS);
}
}
@@ -8871,8 +8919,9 @@ suspend_process_2(BIF_ALIST_2)
{
Eterm res;
Process* suspendee = NULL;
- ErtsSuspendMonitor *smon;
+ ErtsMonitorSuspend *smon;
ErtsProcLocks xlocks = (ErtsProcLocks) 0;
+ int created;
/* Options and default values: */
int asynchronous = 0;
@@ -8905,9 +8954,7 @@ suspend_process_2(BIF_ALIST_2)
goto badarg;
}
- xlocks = ERTS_PROC_LOCK_LINK | (asynchronous
- ? (ErtsProcLocks) 0
- : ERTS_PROC_LOCK_STATUS);
+ xlocks = ERTS_PROC_LOCK_STATUS;
erts_proc_lock(BIF_P, xlocks);
@@ -8918,15 +8965,14 @@ suspend_process_2(BIF_ALIST_2)
if (!suspendee)
goto no_suspendee;
- smon = erts_add_or_lookup_suspend_monitor(&BIF_P->suspend_monitors,
- BIF_ARG_1);
-
- /* ... but a little trickier with SMP support ... */
+ smon = erts_monitor_suspend_tree_lookup_create(&BIF_P->suspend_monitors,
+ &created,
+ BIF_ARG_1);
if (asynchronous) {
/* --- Asynchronous suspend begin ---------------------------------- */
- ERTS_LC_ASSERT(ERTS_PROC_LOCK_LINK
+ ERTS_LC_ASSERT(ERTS_PROC_LOCK_STATUS
& erts_proc_lc_my_proc_locks(BIF_P));
ERTS_LC_ASSERT(ERTS_PROC_LOCK_STATUS
== erts_proc_lc_my_proc_locks(suspendee));
@@ -8968,9 +9014,9 @@ suspend_process_2(BIF_ALIST_2)
else /* if (!asynchronous) */ {
/* --- Synchronous suspend begin ----------------------------------- */
- ERTS_LC_ASSERT(((ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS)
+ ERTS_LC_ASSERT(((ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_STATUS)
& erts_proc_lc_my_proc_locks(BIF_P))
- == (ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_STATUS));
+ == (ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_STATUS));
ERTS_LC_ASSERT(ERTS_PROC_LOCK_STATUS
== erts_proc_lc_my_proc_locks(suspendee));
@@ -9055,9 +9101,15 @@ suspend_process_2(BIF_ALIST_2)
ERTS_BIF_PREP_ERROR(res, BIF_P, SYSTEM_LIMIT);
goto do_return;
- no_suspendee:
- BIF_P->suspendee = NIL;
- erts_delete_suspend_monitor(&BIF_P->suspend_monitors, BIF_ARG_1);
+ no_suspendee: {
+ ErtsMonitor *mon;
+ BIF_P->suspendee = NIL;
+ mon = erts_monitor_tree_lookup(BIF_P->suspend_monitors, BIF_ARG_1);
+ if (mon) {
+ erts_monitor_tree_delete(&BIF_P->suspend_monitors, mon);
+ erts_monitor_suspend_destroy(erts_monitor_suspend(mon));
+ }
+ }
badarg:
ERTS_BIF_PREP_ERROR(res, BIF_P, BADARG);
@@ -9084,15 +9136,17 @@ suspend_process_2(BIF_ALIST_2)
BIF_RETTYPE
resume_process_1(BIF_ALIST_1)
{
- ErtsSuspendMonitor *smon;
+ ErtsMonitor *mon;
+ ErtsMonitorSuspend *smon;
Process *suspendee;
int is_active;
if (BIF_P->common.id == BIF_ARG_1)
BIF_ERROR(BIF_P, BADARG);
- erts_proc_lock(BIF_P, ERTS_PROC_LOCK_LINK);
- smon = erts_lookup_suspend_monitor(BIF_P->suspend_monitors, BIF_ARG_1);
+ erts_proc_lock(BIF_P, ERTS_PROC_LOCK_STATUS);
+ mon = erts_monitor_tree_lookup(BIF_P->suspend_monitors, BIF_ARG_1);
+ smon = erts_monitor_suspend(mon);
if (!smon) {
/* No previous suspend or dead suspendee */
@@ -9109,20 +9163,17 @@ resume_process_1(BIF_ALIST_1)
}
else if (smon->active) {
smon->active--;
- ASSERT(smon->pending >= 0);
+ ASSERT(smon->pending == 0);
is_active = 1;
}
else {
/* No previous suspend or dead suspendee */
- goto error;
+ goto no_suspendee;
}
if (smon->active || smon->pending || !is_active) {
/* Leave the suspendee as it is; just verify that it is still alive */
- suspendee = erts_pid2proc(BIF_P,
- ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK,
- BIF_ARG_1,
- 0);
+ suspendee = erts_proc_lookup(BIF_ARG_1);
if (!suspendee)
goto no_suspendee;
@@ -9130,11 +9181,18 @@ resume_process_1(BIF_ALIST_1)
else {
/* Resume */
suspendee = erts_pid2proc(BIF_P,
- ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK,
+ ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_STATUS,
BIF_ARG_1,
ERTS_PROC_LOCK_STATUS);
- if (!suspendee)
+ if (!suspendee) {
+ mon = erts_monitor_tree_lookup(BIF_P->suspend_monitors, BIF_ARG_1);
+ smon = erts_monitor_suspend(mon);
+ if (!mon)
+ goto error;
goto no_suspendee;
+ }
+
+ ASSERT(mon == erts_monitor_tree_lookup(BIF_P->suspend_monitors, BIF_ARG_1));
ASSERT(ERTS_PSFLG_SUSPENDED
& erts_atomic32_read_nob(&suspendee->state));
@@ -9144,19 +9202,24 @@ resume_process_1(BIF_ALIST_1)
erts_proc_unlock(suspendee, ERTS_PROC_LOCK_STATUS);
}
- if (!smon->active && !smon->pending)
- erts_delete_suspend_monitor(&BIF_P->suspend_monitors, BIF_ARG_1);
+ if (!smon->active && !smon->pending) {
+ ASSERT(mon);
+ erts_monitor_tree_delete(&BIF_P->suspend_monitors, mon);
+ erts_monitor_suspend_destroy(smon);
+ }
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
+ erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_STATUS);
BIF_RET(am_true);
no_suspendee:
/* cleanup */
- erts_delete_suspend_monitor(&BIF_P->suspend_monitors, BIF_ARG_1);
+ ASSERT(mon);
+ erts_monitor_tree_delete(&BIF_P->suspend_monitors, mon);
+ erts_monitor_suspend_destroy(smon);
error:
- erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_LINK);
+ erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_STATUS);
BIF_ERROR(BIF_P, BADARG);
}
@@ -9375,9 +9438,8 @@ erts_resume_processes(ErtsProcList *list)
}
Eterm
-erts_get_process_priority(Process *p)
+erts_get_process_priority(erts_aint32_t state)
{
- erts_aint32_t state = erts_atomic32_read_nob(&p->state);
switch (ERTS_PSFLGS_GET_USR_PRIO(state)) {
case PRIORITY_MAX: return am_max;
case PRIORITY_HIGH: return am_high;
@@ -9427,7 +9489,10 @@ erts_set_process_priority(Process *p, Eterm value)
}
max_qbit = 0;
- if (a & ERTS_PSFLG_ACTIVE_SYS)
+ ASSERT((a & ERTS_PSFLG_SYS_TASKS)
+ ? !!p->sys_task_qs
+ : !p->sys_task_qs);
+ if (a & ERTS_PSFLG_SYS_TASKS)
max_qbit |= p->sys_task_qs->qmask;
if (a & ERTS_PSFLG_DELAYED_SYS) {
ErtsProcSysTaskQs *qs;
@@ -9450,8 +9515,8 @@ erts_set_process_priority(Process *p, Eterm value)
aprio = PRIORITY_LOW;
break;
default:
- ERTS_INTERNAL_ERROR("Invalid qmask");
- aprio = -1;
+ aprio = nprio;
+ break;
}
if (aprio > nprio) /* low value -> high prio */
@@ -9627,10 +9692,6 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
/* have to re-read state after taking lock */
state = erts_atomic32_read_nob(&p->state);
- if (is_normal_sched && (state & ERTS_PSFLG_PENDING_EXIT))
- erts_handle_pending_exit(p, (ERTS_PROC_LOCK_MAIN
- | ERTS_PROC_LOCK_TRACE
- | ERTS_PROC_LOCK_STATUS));
if (p->pending_suspenders)
handle_pending_suspend(p, (ERTS_PROC_LOCK_MAIN
| ERTS_PROC_LOCK_TRACE
@@ -9945,12 +10006,10 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
& ((state & (ERTS_PSFLG_SUSPENDED
| ERTS_PSFLG_EXITING
| ERTS_PSFLG_FREE
- | ERTS_PSFLG_PENDING_EXIT
| ERTS_PSFLG_ACTIVE_SYS
| ERTS_PSFLG_DIRTY_ACTIVE_SYS))
!= ERTS_PSFLG_SUSPENDED)
- & (!(state & (ERTS_PSFLG_EXITING
- | ERTS_PSFLG_PENDING_EXIT))
+ & (!(state & ERTS_PSFLG_EXITING)
| (!!is_normal_sched))
);
@@ -10042,7 +10101,6 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
goto sunlock_sched_out_proc;
}
if (state & (ERTS_PSFLG_ACTIVE_SYS
- | ERTS_PSFLG_PENDING_EXIT
| ERTS_PSFLG_EXITING)) {
/*
* IMPORTANT! We need to take care of
@@ -10065,13 +10123,6 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
&& (state & ERTS_PSFLG_DIRTY_IO_PROC)));
}
- if (state & ERTS_PSFLG_PENDING_EXIT) {
- erts_handle_pending_exit(p,
- ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_STATUS);
- state = erts_atomic32_read_nob(&p->state);
- }
-
-
erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
/* Clear tracer if it has been removed */
@@ -10093,25 +10144,48 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
}
if (is_normal_sched) {
-
if (state & ERTS_PSFLG_RUNNING_SYS) {
- /*
- * GC is normally never delayed when a process
- * is scheduled out, but might be when executing
- * hand written beam assembly in
- * prim_eval:'receive'. If GC is delayed we are
- * not allowed to execute system tasks.
- */
- if (!(p->flags & F_DELAY_GC)) {
- int cost = execute_sys_tasks(p, &state, reds);
- calls += cost;
- reds -= cost;
- if (reds <= 0)
- goto sched_out_proc;
- if (state & ERTS_PSFLGS_DIRTY_WORK)
- goto sched_out_proc;
+ if (state & (ERTS_PSFLG_SIG_Q|ERTS_PSFLG_SIG_IN_Q)) {
+ int local_only = !!(p->flags & F_LOCAL_SIGS_ONLY);
+ if (!local_only || (state & ERTS_PSFLG_SIG_Q)) {
+ int sig_reds;
+ /*
+ * If we have dirty work scheduled we allow
+ * usage of all reductions since we need to
+ * handle all signals before doing dirty
+ * work...
+ */
+ if (state & ERTS_PSFLGS_DIRTY_WORK)
+ sig_reds = reds;
+ else
+ sig_reds = ERTS_SIG_HANDLE_REDS_MAX_PREFERED;
+ (void) erts_proc_sig_handle_incoming(p,
+ &state,
+ &sig_reds,
+ sig_reds,
+ local_only);
+ reds -= sig_reds;
+ }
+ }
+ if ((state & (ERTS_PSFLG_SYS_TASKS
+ | ERTS_PSFLG_EXITING)) == ERTS_PSFLG_SYS_TASKS) {
+ /*
+ * GC is normally never delayed when a process
+ * is scheduled out, but might be when executing
+ * hand written beam assembly in
+ * prim_eval:'receive'. If GC is delayed we are
+ * not allowed to execute system tasks.
+ */
+ if (!(p->flags & F_DELAY_GC)) {
+ int cost = execute_sys_tasks(p, &state, reds);
+ calls += cost;
+ reds -= cost;
+ }
}
+ if (reds <= 0 || (state & ERTS_PSFLGS_DIRTY_WORK))
+ goto sched_out_proc;
+
ASSERT(state & psflg_running_sys);
ASSERT(!(state & psflg_running));
@@ -10120,7 +10194,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
if (((state & (ERTS_PSFLG_SUSPENDED
| ERTS_PSFLG_ACTIVE)) != ERTS_PSFLG_ACTIVE)
- && !(state & ERTS_PSFLG_EXITING)) {
+ & !(state & ERTS_PSFLG_EXITING)) {
goto sched_out_proc;
}
@@ -10162,15 +10236,6 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
ERTS_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p);
- /* Never run a suspended process */
-#ifdef DEBUG
- {
- erts_aint32_t dstate = erts_atomic32_read_nob(&p->state);
- ASSERT(!(ERTS_PSFLG_SUSPENDED & dstate)
- || (ERTS_PSFLG_DIRTY_RUNNING_SYS & dstate));
- }
-#endif
-
ASSERT(erts_proc_read_refc(p) > 0);
if (!(state & ERTS_PSFLG_EXITING) && ERTS_PTMR_IS_TIMED_OUT(p)) {
@@ -10183,6 +10248,11 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
ERTS_PTMR_CLEAR(p);
}
+ /* if exiting, we *shall* exit... */
+ ASSERT(!(state & ERTS_PSFLG_EXITING)
+ || p->i == (BeamInstr *) beam_exit
+ || p->i == (BeamInstr *) beam_continue_exit);
+
#ifdef DEBUG
if (is_normal_sched) {
if (state & ERTS_PSFLGS_DIRTY_WORK)
@@ -10198,6 +10268,18 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls)
ERTS_INTERNAL_ERROR("Executing normal code on dirty UNKNOWN scheduler");
}
}
+ {
+ erts_aint32_t dstate = erts_atomic32_read_nob(&p->state);
+
+ /* Never run a suspended process */
+ ASSERT(!(ERTS_PSFLG_SUSPENDED & dstate)
+ || (ERTS_PSFLG_DIRTY_RUNNING_SYS & dstate));
+
+ /* Do not execute on the wrong type of scheduler... */
+ ASSERT(is_normal_sched
+ ? !(dstate & ERTS_PSFLGS_DIRTY_WORK)
+ : !!(dstate & ERTS_PSFLGS_DIRTY_WORK));
+ }
#endif
return p;
@@ -10399,7 +10481,7 @@ fetch_sys_task(Process *c_p, erts_aint32_t state, int *qmaskp, int *priop)
n |= (prio << ERTS_PSFLGS_ACT_PRIO_OFFSET);
if (!qmask)
- n &= ~ERTS_PSFLG_ACTIVE_SYS;
+ n &= ~ERTS_PSFLG_SYS_TASKS;
if (a == n)
break;
@@ -10439,12 +10521,8 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds)
int st_prio;
Eterm st_res;
- if (state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT)) {
- if (state & ERTS_PSFLG_PENDING_EXIT)
- erts_handle_pending_exit(c_p, ERTS_PROC_LOCK_MAIN);
- ASSERT(ERTS_PROC_IS_EXITING(c_p));
+ if (state & ERTS_PSFLG_EXITING)
break;
- }
st = fetch_sys_task(c_p, state, &qmask, &st_prio);
if (!st)
@@ -10540,6 +10618,70 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds)
reds -= erts_db_execute_free_fixation(c_p, (DbFixation*)st->arg[0]);
st_res = am_true;
break;
+ case ERTS_PSTT_PRIO_SIG: {
+ erts_aint32_t fail_state, state;
+ int local_only, sig_res, sig_reds = reds;
+ st_res = am_false;
+
+ if (st->arg[0] == am_true)
+ local_only = !0;
+ else
+ local_only = 0;
+
+ sig_reds = reds;
+ sig_res = erts_proc_sig_handle_incoming(c_p, &state, &sig_reds,
+ reds, local_only);
+ reds -= sig_reds;
+
+ if (state & ERTS_PSFLG_EXITING)
+ goto perm_elevate_prio;
+
+ if (sig_res)
+ break;
+
+ st->arg[0] = am_true;
+
+ fail_state = ERTS_PSFLG_EXITING;
+
+ if (schedule_process_sys_task(c_p, st_prio, st, &fail_state)) {
+ /* Successfully rescheduled task... */
+ st = NULL;
+ }
+ else {
+ erts_aint32_t a;
+
+ state = erts_atomic32_read_nob(&c_p->state);
+
+ perm_elevate_prio:
+
+ /*
+ * we are about to terminate; permanently elevate
+ * prio in order to ensure high prio signal
+ * handling...
+ */
+
+ a = state;
+ while (1) {
+ erts_aint32_t aprio, uprio, n, e;
+ ASSERT(!(a & ERTS_PSFLG_FREE));
+ aprio = ERTS_PSFLGS_GET_ACT_PRIO(a);
+ uprio = ERTS_PSFLGS_GET_USR_PRIO(a);
+ if (aprio >= uprio)
+ break; /* user prio >= actual prio */
+ /*
+ * actual prio is higher than user prio; raise
+ * user prio to actual prio...
+ */
+ n = e = a;
+ n &= ~ERTS_PSFLGS_USR_PRIO_MASK;
+ n |= aprio << ERTS_PSFLGS_USR_PRIO_OFFSET;
+ a = erts_atomic32_cmpxchg_mb(&c_p->state, n, e);
+ if (a == e)
+ break;
+ }
+ }
+ break;
+ }
default:
ERTS_INTERNAL_ERROR("Invalid process sys task type");
st_res = am_false;
@@ -10593,6 +10735,7 @@ cleanup_sys_tasks(Process *c_p, erts_aint32_t in_state, int in_reds)
case ERTS_PSTT_CPC:
case ERTS_PSTT_COHMQ:
case ERTS_PSTT_ETS_FREE_FIXATION:
+ case ERTS_PSTT_PRIO_SIG:
st_res = am_false;
break;
case ERTS_PSTT_CLA:
@@ -10645,8 +10788,8 @@ erts_execute_dirty_system_task(Process *c_p)
if (c_p->flags & F_DIRTY_GC_HIBERNATE) {
erts_proc_lock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- if (c_p->msg.len)
+ erts_proc_sig_fetch(c_p);
+ if (c_p->sig_qs.len)
c_p->flags &= ~F_DIRTY_GC_HIBERNATE; /* operation aborted... */
else {
erts_proc_unlock(c_p, ERTS_PROC_LOCK_MSGQ|ERTS_PROC_LOCK_STATUS);
@@ -10718,7 +10861,7 @@ dispatch_system_task(Process *c_p, erts_aint_t fail_state,
switch (st->type) {
case ERTS_PSTT_CPC:
- rp = erts_dirty_process_code_checker;
+ rp = erts_dirty_process_signal_handler;
ASSERT(fail_state & (ERTS_PSFLG_DIRTY_RUNNING
| ERTS_PSFLG_DIRTY_RUNNING_SYS));
if (c_p == rp) {
@@ -10935,13 +11078,15 @@ erts_internal_request_system_task_4(BIF_ALIST_4)
BIF_ARG_2, BIF_ARG_3, BIF_ARG_4);
}
-static void
-erts_schedule_generic_sys_task(Eterm pid, ErtsProcSysTaskType type, void* arg)
+static int
+schedule_generic_sys_task(Eterm pid, ErtsProcSysTaskType type,
+ int prio, Eterm arg0, Eterm arg1)
{
- Process *rp = erts_proc_lookup(pid);
+ int res = 0;
+ Process *rp = erts_proc_lookup_raw(pid);
if (rp) {
ErtsProcSysTask *st;
- erts_aint32_t state, fail_state;
+ erts_aint32_t st_prio, fail_state;
st = erts_alloc(ERTS_ALC_T_PROC_SYS_TSK,
ERTS_PROC_SYS_TASK_SIZE(0));
@@ -10950,31 +11095,46 @@ erts_schedule_generic_sys_task(Eterm pid, ErtsProcSysTaskType type, void* arg)
st->reply_tag = NIL;
st->req_id = NIL;
st->req_id_sz = 0;
- st->arg[0] = (Eterm)arg;
+ st->arg[0] = arg0;
+ st->arg[1] = arg1;
ERTS_INIT_OFF_HEAP(&st->off_heap);
- state = erts_atomic32_read_nob(&rp->state);
-
- fail_state = ERTS_PSFLG_EXITING;
- if (!schedule_process_sys_task(rp, ERTS_PSFLGS_GET_USR_PRIO(state),
- st, &fail_state))
+ if (prio >= 0) {
+ st_prio = (erts_aint32_t) prio;
+ fail_state = ERTS_PSFLG_FREE;
+ }
+ else {
+ erts_aint32_t state = erts_atomic32_read_nob(&rp->state);
+ st_prio = ERTS_PSFLGS_GET_USR_PRIO(state);
+ fail_state = ERTS_PSFLG_EXITING;
+ }
+ res = schedule_process_sys_task(rp, st_prio, st, &fail_state);
+ if (!res)
erts_free(ERTS_ALC_T_PROC_SYS_TSK, st);
}
+ return res;
}
-
void
erts_schedule_complete_off_heap_message_queue_change(Eterm pid)
{
- erts_schedule_generic_sys_task(pid, ERTS_PSTT_COHMQ, NULL);
+ schedule_generic_sys_task(pid, ERTS_PSTT_COHMQ,
+ -1, NIL, NIL);
}
void
erts_schedule_ets_free_fixation(Eterm pid, DbFixation* fix)
{
- erts_schedule_generic_sys_task(pid, ERTS_PSTT_ETS_FREE_FIXATION, fix);
+ schedule_generic_sys_task(pid, ERTS_PSTT_ETS_FREE_FIXATION,
+ -1, (Eterm) fix, NIL);
}
+int
+erts_sig_prio(Eterm pid, int prio)
+{
+ return schedule_generic_sys_task(pid, ERTS_PSTT_PRIO_SIG,
+ prio, am_false, NIL);
+}
static void
flush_dirty_trace_messages(void *vpid)
@@ -11014,7 +11174,7 @@ erts_schedule_flush_trace_messages(Process *proc, int force_on_proc)
dhndl = erts_thr_progress_unmanaged_delay();
- erts_schedule_generic_sys_task(pid, ERTS_PSTT_FTMQ, NULL);
+ schedule_generic_sys_task(pid, ERTS_PSTT_FTMQ, -1, NIL, NIL);
erts_thr_progress_unmanaged_continue(dhndl);
@@ -11210,9 +11370,11 @@ erts_set_gc_state(Process *c_p, int enable)
#endif
erts_atomic32_read_bset_nob(&c_p->state,
- (ERTS_PSFLG_DELAYED_SYS
- | ERTS_PSFLG_ACTIVE_SYS),
- ERTS_PSFLG_ACTIVE_SYS);
+ (ERTS_PSFLG_DELAYED_SYS
+ | ERTS_PSFLG_ACTIVE_SYS
+ | ERTS_PSFLG_SYS_TASKS),
+ (ERTS_PSFLG_ACTIVE_SYS
+ | ERTS_PSFLG_SYS_TASKS));
#ifdef DEBUG
ASSERT(state & ERTS_PSFLG_DELAYED_SYS);
@@ -11675,7 +11837,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
p->common.u.alive.reg = NULL;
ERTS_P_LINKS(p) = NULL;
ERTS_P_MONITORS(p) = NULL;
- p->nodes_monitors = NULL;
+ ERTS_P_LT_MONITORS(p) = NULL;
p->suspend_monitors = NULL;
ASSERT(is_pid(parent->group_leader));
@@ -11692,14 +11854,20 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
erts_get_default_proc_tracing(&ERTS_TRACE_FLAGS(p), &ERTS_TRACER(p));
- p->msg.first = NULL;
- p->msg.last = &p->msg.first;
- p->msg.save = &p->msg.first;
- p->msg.saved_last = &p->msg.first;
- p->msg.len = 0;
- p->msg_inq.first = NULL;
- p->msg_inq.last = &p->msg_inq.first;
- p->msg_inq.len = 0;
+ p->sig_qs.first = NULL;
+ p->sig_qs.last = &p->sig_qs.first;
+ p->sig_qs.cont = NULL;
+ p->sig_qs.cont_last = &p->sig_qs.cont;
+ p->sig_qs.save = &p->sig_qs.first;
+ p->sig_qs.saved_last = NULL;
+ p->sig_qs.len = 0;
+ p->sig_qs.nmsigs.next = NULL;
+ p->sig_qs.nmsigs.last = NULL;
+ p->sig_inq.first = NULL;
+ p->sig_inq.last = &p->sig_inq.first;
+ p->sig_inq.len = 0;
+ p->sig_inq.nmsigs.next = NULL;
+ p->sig_inq.nmsigs.last = NULL;
p->bif_timers = NULL;
p->mbuf = NULL;
p->msg_frag = NULL;
@@ -11726,8 +11894,6 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
p->scheduler_data = NULL;
p->suspendee = NIL;
p->pending_suspenders = NULL;
- p->pending_exit.reason = THE_NON_VALUE;
- p->pending_exit.bp = NULL;
#if !defined(NO_FPE_SIGNALS) || defined(HIPE)
p->fp_exception = 0;
@@ -11781,30 +11947,33 @@ erl_create_process(Process* parent, /* Parent of process (default group leader).
*/
if (so->flags & SPO_LINK) {
-#ifdef DEBUG
- int ret;
-#endif
-#ifdef DEBUG
- ret = erts_add_link(&ERTS_P_LINKS(parent), LINK_PID, p->common.id);
- ASSERT(ret == 0);
- ret = erts_add_link(&ERTS_P_LINKS(p), LINK_PID, parent->common.id);
- ASSERT(ret == 0);
-#else
- erts_add_link(&ERTS_P_LINKS(parent), LINK_PID, p->common.id);
- erts_add_link(&ERTS_P_LINKS(p), LINK_PID, parent->common.id);
-#endif
-
+ ErtsLink *lnk;
+ ErtsLinkData *ldp = erts_link_create(ERTS_LNK_TYPE_PROC,
+ parent->common.id,
+ p->common.id);
+ lnk = erts_link_tree_lookup_insert(&ERTS_P_LINKS(parent), &ldp->a);
+ if (lnk) {
+ /*
+ * This should more or less never happen, but could
+ * potentially happen if pid:s wrap...
+ */
+ erts_link_release(lnk);
+ }
+ erts_link_tree_insert(&ERTS_P_LINKS(p), &ldp->b);
}
/*
* Test whether this process should be initially monitored by its parent.
*/
if (so->flags & SPO_MONITOR) {
- Eterm mref;
-
- mref = erts_make_ref(parent);
- erts_add_monitor(&ERTS_P_MONITORS(parent), MON_ORIGIN, mref, p->common.id, NIL);
- erts_add_monitor(&ERTS_P_MONITORS(p), MON_TARGET, mref, parent->common.id, NIL);
+ Eterm mref = erts_make_ref(parent);
+ ErtsMonitorData *mdp = erts_monitor_create(ERTS_MON_TYPE_PROC,
+ mref,
+ parent->common.id,
+ p->common.id,
+ NIL);
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(parent), &mdp->origin);
+ erts_monitor_list_insert(&ERTS_P_LT_MONITORS(p), &mdp->target);
so->mref = mref;
}
@@ -11889,13 +12058,23 @@ void erts_init_empty_process(Process *p)
p->mbuf_sz = 0;
erts_atomic_init_nob(&p->psd, (erts_aint_t) NULL);
ERTS_P_MONITORS(p) = NULL;
+ ERTS_P_LT_MONITORS(p) = NULL;
ERTS_P_LINKS(p) = NULL; /* List of links */
- p->nodes_monitors = NULL;
p->suspend_monitors = NULL;
- p->msg.first = NULL;
- p->msg.last = &p->msg.first;
- p->msg.save = &p->msg.first;
- p->msg.len = 0;
+ p->sig_qs.first = NULL;
+ p->sig_qs.last = &p->sig_qs.first;
+ p->sig_qs.cont = NULL;
+ p->sig_qs.cont_last = &p->sig_qs.cont;
+ p->sig_qs.save = &p->sig_qs.first;
+ p->sig_qs.saved_last = NULL;
+ p->sig_qs.len = 0;
+ p->sig_qs.nmsigs.next = NULL;
+ p->sig_qs.nmsigs.last = NULL;
+ p->sig_inq.first = NULL;
+ p->sig_inq.last = &p->sig_inq.first;
+ p->sig_inq.len = 0;
+ p->sig_inq.nmsigs.next = NULL;
+ p->sig_inq.nmsigs.last = NULL;
p->bif_timers = NULL;
p->dictionary = NULL;
p->seq_trace_clock = 0;
@@ -11942,13 +12121,8 @@ void erts_init_empty_process(Process *p)
erts_atomic32_init_nob(&p->state, (erts_aint32_t) PRIORITY_NORMAL);
p->scheduler_data = NULL;
- p->msg_inq.first = NULL;
- p->msg_inq.last = &p->msg_inq.first;
- p->msg_inq.len = 0;
p->suspendee = NIL;
p->pending_suspenders = NULL;
- p->pending_exit.reason = THE_NON_VALUE;
- p->pending_exit.bp = NULL;
erts_proc_lock_init(p);
erts_proc_unlock(p, ERTS_PROC_LOCKS_ALL);
erts_init_runq_proc(p, ERTS_RUNQ_IX(0), 0);
@@ -11984,11 +12158,11 @@ erts_debug_verify_clean_empty_process(Process* p)
ASSERT(p->old_heap == NULL);
ASSERT(ERTS_P_MONITORS(p) == NULL);
+ ASSERT(ERTS_P_LT_MONITORS(p) == NULL);
ASSERT(ERTS_P_LINKS(p) == NULL);
- ASSERT(p->nodes_monitors == NULL);
ASSERT(p->suspend_monitors == NULL);
- ASSERT(p->msg.first == NULL);
- ASSERT(p->msg.len == 0);
+ ASSERT(p->sig_qs.first == NULL);
+ ASSERT(p->sig_qs.len == 0);
ASSERT(p->bif_timers == NULL);
ASSERT(p->dictionary == NULL);
ASSERT(p->catches == 0);
@@ -11998,12 +12172,10 @@ erts_debug_verify_clean_empty_process(Process* p)
ASSERT(p->parent == NIL);
- ASSERT(p->msg_inq.first == NULL);
- ASSERT(p->msg_inq.len == 0);
+ ASSERT(p->sig_inq.first == NULL);
+ ASSERT(p->sig_inq.len == 0);
ASSERT(p->suspendee == NIL);
ASSERT(p->pending_suspenders == NULL);
- ASSERT(p->pending_exit.reason == THE_NON_VALUE);
- ASSERT(p->pending_exit.bp == NULL);
/* Thing that erts_cleanup_empty_process() cleans up */
@@ -12104,817 +12276,330 @@ delete_process(Process* p)
erts_erase_dicts(p);
/* free all pending messages */
- erts_cleanup_messages(p->msg.first);
- p->msg.first = NULL;
+ erts_cleanup_messages(p->sig_qs.first);
+ p->sig_qs.first = NULL;
+ erts_cleanup_messages(p->sig_qs.cont);
+ p->sig_qs.cont = NULL;
- ASSERT(!p->nodes_monitors);
ASSERT(!p->suspend_monitors);
p->fvalue = NIL;
}
static ERTS_INLINE void
-set_proc_exiting(Process *p,
- erts_aint32_t in_state,
- Eterm reason,
- ErlHeapFragment *bp)
+set_self_exiting(Process *c_p, Eterm reason, int *enqueue,
+ erts_aint32_t *prio, erts_aint32_t *state)
{
- erts_aint32_t state = in_state, enq_prio = -1;
- int enqueue;
- ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(p) == ERTS_PROC_LOCKS_ALL);
-
- enqueue = change_proc_schedule_state(p,
- (ERTS_PSFLG_SUSPENDED
- | ERTS_PSFLG_PENDING_EXIT
- | ERTS_PSFLGS_DIRTY_WORK),
- ERTS_PSFLG_EXITING|ERTS_PSFLG_ACTIVE,
- &state,
- &enq_prio,
- ERTS_PROC_LOCKS_ALL);
-
- p->fvalue = reason;
- if (bp)
- erts_link_mbuf_to_proc(p, bp);
- /*
- * We used to set freason to EXC_EXIT here, but there is no need to
- * save the stack trace since this process irreversibly is going to
- * exit.
- */
- p->freason = EXTAG_EXIT;
- KILL_CATCHES(p);
- p->i = (BeamInstr *) beam_exit;
-
-
- add2runq(enqueue, enq_prio, p, state, NULL);
-}
-
-static ERTS_INLINE erts_aint32_t
-set_proc_self_exiting(Process *c_p)
-{
-#ifdef DEBUG
- int enqueue;
-#endif
- erts_aint32_t state, enq_prio = -1;
+ erts_aint32_t st, enq_prio = -1;
+ int enq;
ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCKS_ALL);
- state = erts_atomic32_read_nob(&c_p->state);
- ASSERT(state & (ERTS_PSFLG_RUNNING
- |ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_DIRTY_RUNNING
- | ERTS_PSFLG_DIRTY_RUNNING_SYS));
-
-#ifdef DEBUG
- enqueue =
-#endif
- change_proc_schedule_state(c_p,
- ERTS_PSFLG_SUSPENDED|ERTS_PSFLG_PENDING_EXIT,
- ERTS_PSFLG_EXITING|ERTS_PSFLG_ACTIVE,
- &state,
- &enq_prio,
- ERTS_PROC_LOCKS_ALL);
-
- ASSERT(!enqueue);
- return state;
-}
+ c_p->fvalue = reason;
+ st = erts_atomic32_read_nob(&c_p->state);
+ ASSERT(enqueue || (st & (ERTS_PSFLG_RUNNING
+ |ERTS_PSFLG_RUNNING_SYS
+ | ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS)));
-void
-erts_handle_pending_exit(Process *c_p, ErtsProcLocks locks)
-{
- ErtsProcLocks xlocks;
- ASSERT(is_value(c_p->pending_exit.reason));
- ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == locks);
- ERTS_LC_ASSERT(locks & ERTS_PROC_LOCK_MAIN);
- ERTS_LC_ASSERT(!((ERTS_PSFLG_EXITING|ERTS_PSFLG_FREE)
- & erts_atomic32_read_nob(&c_p->state)));
-
- /* Ensure that all locks on c_p are locked before proceeding... */
- if (locks == ERTS_PROC_LOCKS_ALL)
- xlocks = 0;
- else {
- xlocks = ~locks & ERTS_PROC_LOCKS_ALL;
- if (erts_proc_trylock(c_p, xlocks) == EBUSY) {
- erts_proc_unlock(c_p, locks & ~ERTS_PROC_LOCK_MAIN);
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
- }
- }
+ enq = change_proc_schedule_state(c_p,
+ (ERTS_PSFLG_SUSPENDED
+ | ERTS_PSFLGS_DIRTY_WORK),
+ ERTS_PSFLG_EXITING|ERTS_PSFLG_ACTIVE,
+ &st,
+ &enq_prio,
+ ERTS_PROC_LOCKS_ALL);
- set_proc_exiting(c_p,
- erts_atomic32_read_acqb(&c_p->state),
- c_p->pending_exit.reason,
- c_p->pending_exit.bp);
- c_p->pending_exit.reason = THE_NON_VALUE;
- c_p->pending_exit.bp = NULL;
-
- if (xlocks)
- erts_proc_unlock(c_p, xlocks);
+ ASSERT(enqueue || !enq);
+ if (enqueue)
+ *enqueue = enq;
+ if (prio)
+ *prio = enq_prio;
+ if (state)
+ *state = st;
}
-static void save_pending_exiter(Process *p, ErtsProcList *plp);
-
-static void
-do_handle_pending_exiters(ErtsProcList *pnd_xtrs)
-{
- /* 'list' is expected to have been fetched (i.e. not a ring anymore) */
- ErtsProcList *plp = pnd_xtrs;
-
- while (plp) {
- ErtsProcList *next_plp = plp->next;
- Process *p = erts_proc_lookup(plp->pid);
- if (p) {
- erts_aint32_t state;
- /*
- * If the process is running on a normal scheduler, the
- * pending exit will soon be detected and handled by the
- * scheduler running the process (at schedule in/out).
- */
- if (erts_proc_trylock(p, ERTS_PROC_LOCKS_ALL) != EBUSY) {
- if (erts_proclist_same(plp, p)) {
- state = erts_atomic32_read_acqb(&p->state);
- if (!(state & (ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_EXITING))) {
- ASSERT(state & ERTS_PSFLG_PENDING_EXIT);
- erts_handle_pending_exit(p, ERTS_PROC_LOCKS_ALL);
- }
- }
- erts_proc_unlock(p, ERTS_PROC_LOCKS_ALL);
- }
- else {
- erts_proc_lock(p, ERTS_PROC_LOCK_STATUS);
- if (erts_proclist_same(plp, p)) {
- state = erts_atomic32_read_acqb(&p->state);
- if (!(state & (ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_EXITING))) {
- /*
- * Save process and try to acquire all
- * locks at a later time...
- */
- save_pending_exiter(p, plp);
- plp = NULL;
- }
- }
- erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS);
- }
- }
- if (plp)
- proclist_destroy(plp);
- plp = next_plp;
- }
-}
-
-static void
-save_pending_exiter(Process *p, ErtsProcList *plp)
+void
+erts_set_self_exiting(Process *c_p, Eterm reason)
{
- ErtsSchedulerSleepInfo *ssi;
- ErtsRunQueue *rq;
-
- ERTS_LC_ASSERT(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p));
-
- rq = erts_get_runq_proc(p, NULL);
- ASSERT(rq && !ERTS_RUNQ_IX_IS_DIRTY(rq->ix));
-
- if (!plp)
- plp = proclist_create(p);
-
- erts_runq_lock(rq);
-
- erts_proclist_store_last(&rq->procs.pending_exiters, plp);
-
- non_empty_runq(rq);
-
- ssi = rq->scheduler->ssi;
-
- erts_runq_unlock(rq);
+ int enqueue;
+ erts_aint32_t enq_prio, state;
+ ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN);
- set_aux_work_flags_wakeup_nob(ssi, ERTS_SSI_AUX_WORK_PENDING_EXITERS);
-}
+ erts_proc_lock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+ set_self_exiting(c_p, reason, &enqueue, &enq_prio, &state);
+ c_p->freason = EXTAG_EXIT;
+ KILL_CATCHES(c_p);
+ c_p->i = (BeamInstr *) beam_exit;
-/*
- * This function delivers an EXIT message to a process
- * which is trapping EXITs.
- */
+ /* Always active when exiting... */
+ ASSERT(state & ERTS_PSFLG_ACTIVE);
-static ERTS_INLINE void
-send_exit_message(Process *to, ErtsProcLocks *to_locksp,
- Eterm exit_term, Uint term_size, Eterm token)
-{
- ErtsMessage *mp;
- ErlOffHeap *ohp;
- Eterm* hp;
- Eterm mess;
-#ifdef SHCOPY_SEND
- erts_shcopy_t info;
-#endif
+ /*
+ * If we are terminating a process that currently
+ * is executing on a dirty scheduler. It *should*
+ * be scheduled on a normal scheduler...
+ */
+ ASSERT(!(state & (ERTS_PSFLG_DIRTY_RUNNING
+ | ERTS_PSFLG_DIRTY_RUNNING_SYS))
+ || enqueue == ERTS_ENQUEUE_NORMAL_QUEUE
+ || enqueue == -ERTS_ENQUEUE_NORMAL_QUEUE);
- if (!have_seqtrace(token)) {
-#ifdef SHCOPY_SEND
- INITIALIZE_SHCOPY(info);
- term_size = copy_shared_calculate(exit_term, &info);
- mp = erts_alloc_message_heap(to, to_locksp, term_size, &hp, &ohp);
- mess = copy_shared_perform(exit_term, term_size, &info, &hp, ohp);
- DESTROY_SHCOPY(info);
-#else
- mp = erts_alloc_message_heap(to, to_locksp, term_size, &hp, &ohp);
- mess = copy_struct(exit_term, term_size, &hp, ohp);
-#endif
- erts_queue_message(to, *to_locksp, mp, mess, am_system);
- } else {
- Eterm temp_token;
- Uint sz_token;
-
- ASSERT(is_tuple(token));
- sz_token = size_object(token);
-#ifdef SHCOPY_SEND
- INITIALIZE_SHCOPY(info);
- term_size = copy_shared_calculate(exit_term, &info);
- mp = erts_alloc_message_heap(to, to_locksp, term_size+sz_token, &hp, &ohp);
- mess = copy_shared_perform(exit_term, term_size, &info, &hp, ohp);
- DESTROY_SHCOPY(info);
-#else
- mp = erts_alloc_message_heap(to, to_locksp, term_size+sz_token, &hp, &ohp);
- mess = copy_struct(exit_term, term_size, &hp, ohp);
-#endif
- /* the trace token must in this case be updated by the caller */
- seq_trace_output(token, mess, SEQ_TRACE_SEND, to->common.id, to);
- temp_token = copy_struct(token, sz_token, &hp, ohp);
- ERL_MESSAGE_TOKEN(mp) = temp_token;
- erts_queue_message(to, *to_locksp, mp, mess, am_system);
- }
+ erts_proc_unlock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
+ if (enqueue)
+ add2runq(enqueue, enq_prio, c_p, state, NULL);
}
-/*
- *
- * *** Exit signal behavior ***
- *
- * Exit signals are asynchronous (truly asynchronous in the
- * SMP emulator). When the signal is received the receiver receives an
- * 'EXIT' message if it is trapping exits; otherwise, it will either
- * ignore the signal if the exit reason is normal, or go into an
- * exiting state (ERTS_PSFLG_EXITING). When a process has gone into the
- * exiting state it will not execute any more Erlang code, but it might
- * take a while before it actually exits. The exit signal is being
- * received when the 'EXIT' message is put in the message queue, the
- * signal is dropped, or when it changes state into exiting. The time it
- * is in the exiting state before actually exiting is undefined (it
- * might take a really long time under certain conditions). The
- * receiver of the exit signal does not break links or trigger monitors
- * until it actually exits.
- *
- * Exit signals and other signals, e.g. messages, have to be received
- * by a receiver in the same order as sent by a sender.
- *
- *
- *
- * Exit signal implementation in the SMP emulator:
- *
- * If the receiver is trapping exits, the signal is transformed
- * into an 'EXIT' message and sent as a normal message, if the
- * reason is normal the signal is dropped; otherwise, the process
- * is determined to be exited. The interesting case is when the
- * process is to be exited and this is what is described below.
- *
- * If it is possible, the receiver is set in the exiting state straight
- * away and we are done; otherwise, the sender places the exit reason
- * in the pending_exit field of the process struct and if necessary
- * adds the receiver to the run queue. It is typically not possible
- * to set a scheduled process or a process which we cannot get all locks
- * on without releasing locks on it in an exiting state straight away.
- *
- * The receiver will poll the pending_exit field when it reach certain
- * places during it's execution. When it discovers the pending exit
- * it will change state into the exiting state. If the receiver wasn't
- * scheduled when the pending exit was set, the first scheduler that
- * schedules a new process will set the receiving process in the exiting
- * state just before it schedules next process.
- *
- * When the exit signal is placed in the pending_exit field, the signal
- * is considered as being in transit on the Erlang level. The signal is
- * actually in some kind of semi transit state, since we have already
- * determined how it should be received. It will exit the process no
- * matter what if it is received (the process may exit by itself before
- * reception of the exit signal). The signal is received when it is
- * discovered in the pending_exit field by the receiver.
- *
- * The receiver have to poll the pending_exit field at least before:
- * - moving messages from the message in queue to the private message
- * queue. This in order to preserve signal order.
- * - unlink. Otherwise the process might get exited on a link that
- * have been removed.
- * - changing the trap_exit flag to true. This in order to simplify the
- * implementation; otherwise, we would have to transform the signal
- * into an 'EXIT' message when setting the trap_exit flag to true. We
- * would also have to maintain a queue of exit signals in transit.
- * - being scheduled in or out.
- */
-
-static ERTS_INLINE int
-send_exit_signal(Process *c_p, /* current process if and only
- if reason is stored on it */
- Eterm from, /* Id of sender of signal */
- Process *rp, /* receiving process */
- ErtsProcLocks *rp_locks,/* current locks on receiver */
- Eterm reason, /* exit reason */
- Eterm exit_tuple, /* Prebuild exit tuple
- or THE_NON_VALUE */
- Uint exit_tuple_sz, /* Size of prebuilt exit tuple
- (if exit_tuple != THE_NON_VALUE) */
- Eterm token, /* token */
- Process *token_update, /* token updater */
- Uint32 flags /* flags */
- )
-{
- erts_aint32_t state = erts_atomic32_read_nob(&rp->state);
- Eterm rsn = reason == am_kill ? am_killed : reason;
-
- ERTS_LC_ASSERT(*rp_locks == erts_proc_lc_my_proc_locks(rp));
- ERTS_LC_ASSERT((*rp_locks & ERTS_PROC_LOCKS_XSIG_SEND)
- == ERTS_PROC_LOCKS_XSIG_SEND);
-
- ASSERT(reason != THE_NON_VALUE);
-
-#ifdef USE_VM_PROBES
- if(DTRACE_ENABLED(process_exit_signal) && is_pid(from)) {
- DTRACE_CHARBUF(sender_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(receiver_str, DTRACE_TERM_BUF_SIZE);
- DTRACE_CHARBUF(reason_buf, DTRACE_TERM_BUF_SIZE);
-
- dtrace_pid_str(from, sender_str);
- dtrace_proc_str(rp, receiver_str);
- erts_snprintf(reason_buf, sizeof(DTRACE_CHARBUF_NAME(reason_buf)) - 1, "%T", reason);
- DTRACE3(process_exit_signal, sender_str, receiver_str, reason_buf);
+void
+erts_proc_exit_handle_monitor(ErtsMonitor *mon, void *vctxt)
+{
+ Process *c_p = ((ErtsProcExitContext *) vctxt)->c_p;
+ Eterm reason = ((ErtsProcExitContext *) vctxt)->reason;
+ ErtsMonitorData *mdp = NULL;
+
+ if (erts_monitor_is_target(mon)) {
+ /* We are being watched... */
+ switch (mon->type) {
+ case ERTS_MON_TYPE_PROC:
+ erts_proc_sig_send_monitor_down(mon, reason);
+ mon = NULL;
+ break;
+ case ERTS_MON_TYPE_PORT: {
+ Port *prt;
+ ASSERT(is_internal_port(mon->other.item));
+ prt = erts_id2port(mon->other.item);
+ if (prt) {
+ erts_fire_port_monitor(prt, mon);
+ erts_port_release(prt);
+ mon = NULL;
+ }
+ break;
+ }
+ case ERTS_MON_TYPE_RESOURCE:
+ erts_fire_nif_monitor(mon);
+ mon = NULL;
+ break;
+ case ERTS_MON_TYPE_DIST_PROC: {
+ ErtsMonLnkDist *dist;
+ DistEntry *dep;
+ ErtsDSigData dsd;
+ int code;
+ Eterm watcher;
+ Eterm watched;
+
+ mdp = erts_monitor_to_data(mon);
+
+ if (mon->flags & ERTS_ML_FLG_NAME)
+ watched = ((ErtsMonitorDataExtended *) mdp)->u.name;
+ else
+ watched = c_p->common.id;
+ ASSERT(is_internal_pid(watched) || is_atom(watched));
+
+ watcher = mon->other.item;
+ ASSERT(is_external_pid(watcher));
+ dep = external_pid_dist_entry(watcher);
+ ASSERT(dep);
+ dist = ((ErtsMonitorDataExtended *) mdp)->dist;
+ ASSERT(dist);
+ code = erts_dsig_prepare(&dsd, dep, NULL, 0,
+ ERTS_DSP_NO_LOCK, 0, 0);
+ switch (code) {
+ case ERTS_DSIG_PREP_CONNECTED:
+ case ERTS_DSIG_PREP_PENDING:
+ if (dist->connection_id == dsd.connection_id) {
+ code = erts_dsig_send_m_exit(&dsd,
+ watcher,
+ watched,
+ mdp->ref,
+ reason);
+ ASSERT(code == ERTS_DSIG_SEND_OK);
+ }
+ default:
+ break;
+ }
+ if (!erts_monitor_dist_delete(&mdp->origin))
+ mdp = NULL;
+ break;
+ }
+ default:
+ ERTS_INTERNAL_ERROR("Invalid target monitor type");
+ break;
+ }
}
-#endif
-
- if ((state & ERTS_PSFLG_TRAP_EXIT)
- && (reason != am_kill || (flags & ERTS_XSIG_FLG_IGN_KILL))) {
- /* have to release the status and trace lock in order to send the exit message */
- erts_proc_unlock(rp, *rp_locks & (ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE));
- *rp_locks &= ~(ERTS_PROC_LOCKS_XSIG_SEND|ERTS_PROC_LOCK_TRACE);
- if (have_seqtrace(token) && token_update)
- seq_trace_update_send(token_update);
- if (is_value(exit_tuple))
- send_exit_message(rp, rp_locks, exit_tuple, exit_tuple_sz, token);
- else
- erts_deliver_exit_message(from, rp, rp_locks, rsn, token);
- return 1; /* Receiver will get a message */
- }
- else if (reason != am_normal || (flags & ERTS_XSIG_FLG_NO_IGN_NORMAL)) {
- if (!(state & (ERTS_PSFLG_EXITING|ERTS_PSFLG_PENDING_EXIT))) {
- ASSERT(!rp->pending_exit.bp);
-
- if (rp == c_p && (*rp_locks & ERTS_PROC_LOCK_MAIN)) {
- /* Ensure that all locks on c_p are locked before
- proceeding... */
- if (*rp_locks != ERTS_PROC_LOCKS_ALL) {
- ErtsProcLocks need_locks = (~(*rp_locks)
- & ERTS_PROC_LOCKS_ALL);
- if (erts_proc_trylock(c_p, need_locks) == EBUSY) {
- erts_proc_unlock(c_p,
- *rp_locks & ~ERTS_PROC_LOCK_MAIN);
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_ALL_MINOR);
- }
- *rp_locks = ERTS_PROC_LOCKS_ALL;
- }
- set_proc_exiting(c_p, state, rsn, NULL);
- }
- else if (!(state & (ERTS_PSFLG_RUNNING
- | ERTS_PSFLG_RUNNING_SYS
- | ERTS_PSFLG_DIRTY_RUNNING_SYS))) {
- /* Process not running ... */
- ErtsProcLocks need_locks = ~(*rp_locks) & ERTS_PROC_LOCKS_ALL;
- ErlHeapFragment *bp = NULL;
- Eterm rsn_cpy;
- if (need_locks
- && erts_proc_trylock(rp, need_locks) == EBUSY) {
- /* ... but we havn't got all locks on it ... */
- save_pending_exiter(rp, NULL);
- /*
- * The pending exit will be discovered when next
- * process is scheduled in
- */
- goto set_pending_exit;
- }
- /* ...and we have all locks on it... */
- *rp_locks = ERTS_PROC_LOCKS_ALL;
-
- state = erts_atomic32_read_nob(&rp->state);
-
- if (is_immed(rsn))
- rsn_cpy = rsn;
- else {
- Eterm *hp;
- ErlOffHeap *ohp;
- Uint rsn_sz = size_object(rsn);
- if (state & ERTS_PSFLG_DIRTY_RUNNING) {
- bp = new_message_buffer(rsn_sz);
- ohp = &bp->off_heap;
- hp = &bp->mem[0];
- }
- else
- {
- hp = HAlloc(rp, rsn_sz);
- ohp = &rp->off_heap;
- }
- rsn_cpy = copy_struct(rsn, rsn_sz, &hp, ohp);
- }
-
- set_proc_exiting(rp, state, rsn_cpy, bp);
- }
- else { /* Process running... */
-
- /*
- * The pending exit will be discovered when the process
- * is scheduled out if not discovered earlier.
- */
-
- set_pending_exit:
- if (is_immed(rsn)) {
- rp->pending_exit.reason = rsn;
- }
- else {
- Eterm *hp;
- Uint sz = size_object(rsn);
- ErlHeapFragment *bp = new_message_buffer(sz);
-
- hp = &bp->mem[0];
- rp->pending_exit.reason = copy_struct(rsn,
- sz,
- &hp,
- &bp->off_heap);
- rp->pending_exit.bp = bp;
- }
-
- /*
- * If no dirty work has been scheduled, pending exit will
- * be discovered when the process is scheduled. If dirty work
- * has been scheduled, we may need to add it to a normal run
- * queue...
- */
- {
- erts_aint32_t a = erts_atomic32_read_nob(&rp->state);
- while (1) {
- erts_aint32_t n, e;
- int dwork;
- n = e = a;
- n |= ERTS_PSFLG_PENDING_EXIT;
- dwork = !!(n & ERTS_PSFLGS_DIRTY_WORK);
- n &= ~ERTS_PSFLGS_DIRTY_WORK;
- a = erts_atomic32_cmpxchg_mb(&rp->state, n, e);
- if (a == e) {
- if (dwork)
- erts_schedule_process(rp, n, *rp_locks);
- break;
- }
- }
+ else { /* Origin monitor */
+ /* We are watching someone else... */
+ switch (mon->type) {
+ case ERTS_MON_TYPE_PROC:
+ erts_proc_sig_send_demonitor(mon);
+ mon = NULL;
+ break;
+ case ERTS_MON_TYPE_TIME_OFFSET:
+ erts_demonitor_time_offset(mon);
+ mon = NULL;
+ break;
+ case ERTS_MON_TYPE_NODE:
+ mdp = erts_monitor_to_data(mon);
+ if (!erts_monitor_dist_delete(&mdp->target))
+ mdp = NULL;
+ break;
+ case ERTS_MON_TYPE_NODES:
+ erts_monitor_nodes_delete(mon);
+ mon = NULL;
+ break;
+ case ERTS_MON_TYPE_PORT: {
+ Port *prt;
+ ASSERT(is_internal_port(mon->other.item));
+ prt = erts_port_lookup_raw(mon->other.item);
+ if (prt) {
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
+ if (erts_port_demonitor(c_p, prt, mon) != ERTS_PORT_OP_DROPPED)
+ mon = NULL;
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN);
+ }
+ break;
+ }
+ case ERTS_MON_TYPE_DIST_PROC: {
+ ErtsMonLnkDist *dist;
+ DistEntry *dep;
+ ErtsDSigData dsd;
+ int code;
+ Eterm watched;
+
+ mdp = erts_monitor_to_data(mon);
+ dist = ((ErtsMonitorDataExtended *) mdp)->dist;
+ ASSERT(dist);
+ if (mon->flags & ERTS_ML_FLG_NAME) {
+ watched = ((ErtsMonitorDataExtended *) mdp)->u.name;
+ ASSERT(is_atom(watched));
+ dep = erts_sysname_to_connected_dist_entry(dist->nodename);
+ }
+ else {
+ watched = mon->other.item;
+ ASSERT(is_external_pid(watched));
+ dep = external_pid_dist_entry(watched);
+ }
+ code = erts_dsig_prepare(&dsd, dep, NULL, 0,
+ ERTS_DSP_NO_LOCK, 0, 0);
+ switch (code) {
+ case ERTS_DSIG_PREP_CONNECTED:
+ case ERTS_DSIG_PREP_PENDING:
+ if (dist->connection_id == dsd.connection_id) {
+ code = erts_dsig_send_demonitor(&dsd,
+ c_p->common.id,
+ watched,
+ mdp->ref,
+ 1);
+ ASSERT(code == ERTS_DSIG_SEND_OK);
}
- }
- }
- /* else:
- *
- * The receiver already has a pending exit (or is exiting)
- * so we drop this signal.
- *
- * NOTE: dropping this exit signal is based on the assumption
- * that the receiver *will* exit; either on the pending
- * exit or by itself before seeing the pending exit.
- */
- return -1; /* Receiver will exit */
+ default:
+ break;
+ }
+ if (!erts_monitor_dist_delete(&mdp->target))
+ mdp = NULL;
+ break;
+ }
+ default:
+ ERTS_INTERNAL_ERROR("Invalid origin monitor type");
+ break;
+ }
}
- return 0; /* Receiver unaffected */
+ if (mdp)
+ erts_monitor_release_both(mdp);
+ else if (mon)
+ erts_monitor_release(mon);
}
-
-int
-erts_send_exit_signal(Process *c_p,
- Eterm from,
- Process *rp,
- ErtsProcLocks *rp_locks,
- Eterm reason,
- Eterm token,
- Process *token_update,
- Uint32 flags)
-{
- return send_exit_signal(c_p,
- from,
- rp,
- rp_locks,
- reason,
- THE_NON_VALUE,
- 0,
- token,
- token_update,
- flags);
-}
-
-typedef struct {
- Eterm reason;
- Process *p;
-} ExitMonitorContext;
-
-static void doit_exit_monitor(ErtsMonitor *mon, void *vpcontext)
-{
- ExitMonitorContext *pcontext = vpcontext;
- DistEntry *dep;
- ErtsMonitor *rmon;
-
- switch (mon->type) {
- case MON_ORIGIN:
- /* We are monitoring someone else, we need to demonitor that one.. */
- if (is_atom(mon->u.pid)) { /* remote by name */
- ASSERT(is_node_name_atom(mon->u.pid));
- dep = erts_sysname_to_connected_dist_entry(mon->u.pid);
- if (dep) {
- erts_de_links_lock(dep);
- rmon = erts_remove_monitor(&(dep->monitors), mon->ref);
- erts_de_links_unlock(dep);
- if (rmon) {
- ErtsDSigData dsd;
- int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
- ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED ||
- code == ERTS_DSIG_PREP_PENDING) {
-
- code = erts_dsig_send_demonitor(&dsd,
- rmon->u.pid,
- mon->name,
- mon->ref,
- 1);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- erts_destroy_monitor(rmon);
- }
- }
- } else {
- ASSERT(is_pid(mon->u.pid) || is_port(mon->u.pid));
- /* if is local by pid or name */
- if (is_internal_pid(mon->u.pid)) {
- Process *rp = erts_pid2proc(NULL, 0, mon->u.pid, ERTS_PROC_LOCK_LINK);
- if (!rp) {
- goto done;
- }
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (rmon == NULL) {
- goto done;
- }
- erts_destroy_monitor(rmon);
- } else if (is_internal_port(mon->u.pid)) {
- /* Is a local port */
- Port *prt = erts_port_lookup_raw(mon->u.pid);
- if (!prt) {
- goto done;
- }
- erts_port_demonitor(pcontext->p,
- ERTS_PORT_DEMONITOR_ORIGIN_ON_DEATHBED,
- prt, mon->ref, NULL);
- } else { /* remote by pid */
- ASSERT(is_external_pid(mon->u.pid));
- dep = external_pid_dist_entry(mon->u.pid);
- ASSERT(dep != NULL);
- if (dep) {
- erts_de_links_lock(dep);
- rmon = erts_remove_monitor(&(dep->monitors), mon->ref);
- erts_de_links_unlock(dep);
- if (rmon) {
- ErtsDSigData dsd;
- int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
- ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED ||
- code == ERTS_DSIG_PREP_PENDING) {
-
- code = erts_dsig_send_demonitor(&dsd,
- rmon->u.pid,
- mon->u.pid,
- mon->ref,
- 1);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- erts_destroy_monitor(rmon);
- }
- }
- }
- }
- break;
- case MON_TARGET:
- ASSERT(is_pid(mon->u.pid) || is_internal_port(mon->u.pid));
- if (is_internal_port(mon->u.pid)) {
- Port *prt = erts_id2port(mon->u.pid);
- if (prt == NULL) {
- goto done;
- }
- erts_fire_port_monitor(prt, mon->ref);
- erts_port_release(prt);
- } else if (is_internal_pid(mon->u.pid)) {/* local by name or pid */
- Eterm watched;
- Process *rp;
- DeclareTmpHeapNoproc(lhp,3);
- ErtsProcLocks rp_locks = (ERTS_PROC_LOCK_LINK
- | ERTS_PROC_LOCKS_MSG_SEND);
- rp = erts_pid2proc(NULL, 0, mon->u.pid, rp_locks);
- if (rp == NULL) {
- goto done;
- }
- UseTmpHeapNoproc(3);
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- if (rmon) {
- erts_destroy_monitor(rmon);
- watched = (is_atom(mon->name)
- ? TUPLE2(lhp, mon->name,
- erts_this_dist_entry->sysname)
- : pcontext->p->common.id);
- erts_queue_monitor_message(rp, &rp_locks, mon->ref, am_process,
- watched, pcontext->reason);
- }
- UnUseTmpHeapNoproc(3);
- /* else: demonitor while we exited, i.e. do nothing... */
- erts_proc_unlock(rp, rp_locks);
- } else { /* external by pid or name */
- ASSERT(is_external_pid(mon->u.pid));
- dep = external_pid_dist_entry(mon->u.pid);
- ASSERT(dep != NULL);
- if (dep) {
- erts_de_links_lock(dep);
- rmon = erts_remove_monitor(&(dep->monitors), mon->ref);
- erts_de_links_unlock(dep);
- if (rmon) {
- ErtsDSigData dsd;
- int code = erts_dsig_prepare(&dsd, dep, NULL, 0,
- ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED) {
- code = erts_dsig_send_m_exit(&dsd,
- mon->u.pid,
- (rmon->name != NIL
- ? rmon->name
- : rmon->u.pid),
- mon->ref,
- pcontext->reason);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- erts_destroy_monitor(rmon);
- }
- }
- }
- break;
- case MON_NIF_TARGET:
- erts_fire_nif_monitor(mon->u.resource,
- pcontext->p->common.id,
- mon->ref);
+void
+erts_proc_exit_handle_link(ErtsLink *lnk, void *vctxt)
+{
+ Process *c_p = ((ErtsProcExitContext *) vctxt)->c_p;
+ Eterm reason = ((ErtsProcExitContext *) vctxt)->reason;
+ ErtsLinkData *ldp = NULL;
+
+ switch (lnk->type) {
+ case ERTS_LNK_TYPE_PROC:
+ ASSERT(is_internal_pid(lnk->other.item));
+ erts_proc_sig_send_link_exit(c_p, c_p->common.id, lnk,
+ reason, SEQ_TRACE_TOKEN(c_p));
+ lnk = NULL;
+ break;
+ case ERTS_LNK_TYPE_PORT: {
+ Port *prt;
+ ASSERT(is_internal_port(lnk->other.item));
+ prt = erts_port_lookup(lnk->other.item,
+ ERTS_PORT_SFLGS_INVALID_LOOKUP);
+ if (prt)
+ erts_port_exit(NULL,
+ (ERTS_PORT_SIG_FLG_FORCE_SCHED
+ | ERTS_PORT_SIG_FLG_BROKEN_LINK),
+ prt,
+ c_p->common.id,
+ reason,
+ NULL);
+ break;
+ }
+ case ERTS_LNK_TYPE_DIST_PROC: {
+ DistEntry *dep;
+ ErtsMonLnkDist *dist;
+ ErtsLink *dlnk;
+ ErtsDSigData dsd;
+ int code;
+
+ dlnk = erts_link_to_other(lnk, &ldp);
+ dist = ((ErtsLinkDataExtended *) ldp)->dist;
+
+ ASSERT(is_external_pid(lnk->other.item));
+ dep = external_pid_dist_entry(lnk->other.item);
+
+ ASSERT(dep != erts_this_dist_entry);
+
+ if (!erts_link_dist_delete(dlnk))
+ ldp = NULL;
+
+ erts_proc_lock(c_p, ERTS_PROC_LOCK_MAIN);
+ code = erts_dsig_prepare(&dsd, dep, c_p, 0, ERTS_DSP_NO_LOCK, 0, 0);
+ switch (code) {
+ case ERTS_DSIG_PREP_CONNECTED:
+ case ERTS_DSIG_PREP_PENDING:
+ if (dist->connection_id == dsd.connection_id) {
+ code = erts_dsig_send_exit_tt(&dsd,
+ c_p->common.id,
+ lnk->other.item,
+ reason,
+ SEQ_TRACE_TOKEN(c_p));
+ ASSERT(code == ERTS_DSIG_SEND_OK);
+ }
+ }
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN);
break;
- case MON_TIME_OFFSET:
- erts_demonitor_time_offset(mon->ref);
- break;
- default:
- ERTS_INTERNAL_ERROR("Invalid monitor type");
}
- done:
- /* As the monitors are previously removed from the process,
- distribution operations will not cause monitors to disappear,
- we can safely delete it. */
-
- erts_destroy_monitor(mon);
-}
-
-typedef struct {
- Process *p;
- Eterm reason;
- Eterm exit_tuple;
- Uint exit_tuple_sz;
-} ExitLinkContext;
-
-static void doit_exit_link(ErtsLink *lnk, void *vpcontext)
-{
- ExitLinkContext *pcontext = vpcontext;
- /* Unpack context, it's readonly */
- Process *p = pcontext->p;
- Eterm reason = pcontext->reason;
- Eterm exit_tuple = pcontext->exit_tuple;
- Uint exit_tuple_sz = pcontext->exit_tuple_sz;
- Eterm item = lnk->pid;
- ErtsLink *rlnk;
- DistEntry *dep;
- Process *rp;
-
-
- switch(lnk->type) {
- case LINK_PID:
- if(is_internal_port(item)) {
- Port *prt = erts_port_lookup(item, ERTS_PORT_SFLGS_INVALID_LOOKUP);
- if (prt)
- erts_port_exit(NULL,
- (ERTS_PORT_SIG_FLG_FORCE_SCHED
- | ERTS_PORT_SIG_FLG_BROKEN_LINK),
- prt,
- p->common.id,
- reason,
- NULL);
- }
- else if(is_external_port(item)) {
- erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
- erts_dsprintf(dsbufp,
- "Erroneous link between %T and external port %T "
- "found\n",
- p->common.id,
- item);
- erts_send_error_to_logger_nogl(dsbufp);
- ASSERT(0); /* It isn't possible to setup such a link... */
- }
- else if (is_internal_pid(item)) {
- ErtsProcLocks rp_locks = (ERTS_PROC_LOCK_LINK
- | ERTS_PROC_LOCKS_XSIG_SEND);
- rp = erts_pid2proc(NULL, 0, item, rp_locks);
- if (rp) {
- rlnk = erts_remove_link(&ERTS_P_LINKS(rp), p->common.id);
- /* If rlnk == NULL, we got unlinked while exiting,
- i.e., do nothing... */
- if (rlnk) {
- int xres;
- erts_destroy_link(rlnk);
- xres = send_exit_signal(NULL,
- p->common.id,
- rp,
- &rp_locks,
- reason,
- exit_tuple,
- exit_tuple_sz,
- SEQ_TRACE_TOKEN(p),
- p,
- ERTS_XSIG_FLG_IGN_KILL);
- if (xres >= 0 && IS_TRACED_FL(rp, F_TRACE_PROCS)) {
- /* We didn't exit the process and it is traced */
- if (IS_TRACED_FL(rp, F_TRACE_PROCS)) {
- if (rp_locks & ERTS_PROC_LOCKS_XSIG_SEND) {
- erts_proc_unlock(rp, ERTS_PROC_LOCKS_XSIG_SEND);
- rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND;
- }
- trace_proc(NULL, 0, rp, am_getting_unlinked, p->common.id);
- }
- }
- }
- ASSERT(rp != p);
- erts_proc_unlock(rp, rp_locks);
- }
- }
- else if (is_external_pid(item)) {
- dep = external_pid_dist_entry(item);
- if(dep != erts_this_dist_entry) {
- ErtsDSigData dsd;
- int code;
- ErtsDistLinkData dld;
- erts_remove_dist_link(&dld, p->common.id, item, dep);
- if (dld.d_lnk) {
- erts_proc_lock(p, ERTS_PROC_LOCK_MAIN);
- code = erts_dsig_prepare(&dsd, dep, p, 0, ERTS_DSP_NO_LOCK, 0, 0);
- if (code == ERTS_DSIG_PREP_CONNECTED ||
- code == ERTS_DSIG_PREP_PENDING) {
-
- code = erts_dsig_send_exit_tt(&dsd, p->common.id, item,
- reason, SEQ_TRACE_TOKEN(p));
- ASSERT(code == ERTS_DSIG_SEND_OK);
- }
- erts_proc_unlock(p, ERTS_PROC_LOCK_MAIN);
- }
- erts_destroy_dist_link(&dld);
- }
- }
- break;
- case LINK_NODE:
- ASSERT(is_node_name_atom(item));
- dep = erts_sysname_to_connected_dist_entry(item);
- if(dep) {
- /* dist entries have node links in a separate structure to
- avoid confusion */
- erts_de_links_lock(dep);
- rlnk = erts_remove_link(&(dep->node_links), p->common.id);
- erts_de_links_unlock(dep);
- if (rlnk)
- erts_destroy_link(rlnk);
- }
- break;
-
default:
- erts_exit(ERTS_ERROR_EXIT, "bad type in link list\n");
- break;
+ ERTS_INTERNAL_ERROR("Unexpected link type");
+ break;
}
- erts_destroy_link(lnk);
+
+ if (ldp)
+ erts_link_release_both(ldp);
+ else if (lnk)
+ erts_link_release(lnk);
}
static void
-resume_suspend_monitor(ErtsSuspendMonitor *smon, void *vc_p)
+resume_suspend_monitor(ErtsMonitor *mon, void *vc_p)
{
+ ErtsMonitorSuspend *smon = erts_monitor_suspend(mon);
Process *suspendee = erts_pid2proc((Process *) vc_p, ERTS_PROC_LOCK_MAIN,
- smon->pid, ERTS_PROC_LOCK_STATUS);
+ smon->mon.other.item, ERTS_PROC_LOCK_STATUS);
if (suspendee) {
ASSERT(suspendee != vc_p);
if (smon->active)
resume_process(suspendee, ERTS_PROC_LOCK_STATUS);
erts_proc_unlock(suspendee, ERTS_PROC_LOCK_STATUS);
}
- erts_destroy_suspend_monitor(smon);
+ erts_monitor_suspend_destroy(smon);
}
/* this function fishishes a process and propagates exit messages - called
@@ -12923,8 +12608,6 @@ void
erts_do_exit_process(Process* p, Eterm reason)
{
p->arity = 0; /* No live registers */
- p->fvalue = reason;
-
#ifdef USE_VM_PROBES
if (DTRACE_ENABLED(process_exit)) {
@@ -12948,18 +12631,11 @@ erts_do_exit_process(Process* p, Eterm reason)
process from exiting until the lock has been released. */
erts_proc_lock(p, ERTS_PROC_LOCKS_ALL_MINOR);
- if (ERTS_PSFLG_PENDING_EXIT & set_proc_self_exiting(p)) {
- /* Process exited before pending exit was received... */
- p->pending_exit.reason = THE_NON_VALUE;
- if (p->pending_exit.bp) {
- free_message_buffer(p->pending_exit.bp);
- p->pending_exit.bp = NULL;
- }
- }
+ set_self_exiting(p, reason, NULL, NULL, NULL);
cancel_suspend_of_suspendee(p, ERTS_PROC_LOCKS_ALL);
- ERTS_MSGQ_MV_INQ2PRIVQ(p);
+ erts_proc_sig_fetch(p);
if (IS_TRACED(p)) {
if (IS_TRACED_FL(p, F_TRACE_CALLS))
@@ -12996,13 +12672,15 @@ erts_do_exit_process(Process* p, Eterm reason)
void
erts_continue_exit_process(Process *p)
{
- ErtsLink* lnk;
- ErtsMonitor *mon;
+ ErtsLink *links;
+ ErtsMonitor *monitors;
+ ErtsMonitor *lt_monitors;
ErtsProcLocks curr_locks = ERTS_PROC_LOCK_MAIN;
Eterm reason = p->fvalue;
DistEntry *dep = NULL;
erts_aint32_t state;
int delay_del_proc = 0;
+ ErtsProcExitContext pectxt;
#ifdef DEBUG
int yield_allowed = 1;
@@ -13074,7 +12752,7 @@ erts_continue_exit_process(Process *p)
erts_set_gc_state(p, 1);
state = erts_atomic32_read_acqb(&p->state);
- if (state & ERTS_PSFLG_ACTIVE_SYS
+ if ((state & ERTS_PSFLG_SYS_TASKS)
|| p->dirty_sys_tasks
) {
if (cleanup_sys_tasks(p, state, CONTEXT_REDS) >= CONTEXT_REDS/2)
@@ -13094,18 +12772,10 @@ erts_continue_exit_process(Process *p)
p->flags &= ~F_USING_DDLL;
}
- if (p->nodes_monitors) {
- erts_delete_nodes_monitors(p, ERTS_PROC_LOCK_MAIN);
- p->nodes_monitors = NULL;
- }
-
-
- if (p->suspend_monitors) {
- erts_sweep_suspend_monitors(p->suspend_monitors,
- resume_suspend_monitor,
- p);
- p->suspend_monitors = NULL;
- }
+ if (p->suspend_monitors)
+ erts_monitor_tree_foreach_delete(&p->suspend_monitors,
+ resume_suspend_monitor,
+ p);
/*
* The registered name *should* be the last "erlang resource" to
@@ -13134,8 +12804,9 @@ erts_continue_exit_process(Process *p)
* Note! The monitor and link fields will be overwritten
* by erts_ptab_delete_element() below.
*/
- mon = ERTS_P_MONITORS(p);
- lnk = ERTS_P_LINKS(p);
+ links = ERTS_P_LINKS(p);
+ monitors = ERTS_P_MONITORS(p);
+ lt_monitors = ERTS_P_LT_MONITORS(p);
{
/* Do *not* use erts_get_runq_proc() */
@@ -13172,7 +12843,9 @@ erts_continue_exit_process(Process *p)
n = e = a;
ASSERT(a & ERTS_PSFLG_EXITING);
n |= ERTS_PSFLG_FREE;
- n &= ~ERTS_PSFLG_ACTIVE;
+ n &= ~(ERTS_PSFLG_ACTIVE
+ | ERTS_PSFLG_ACTIVE_SYS
+ | ERTS_PSFLG_DIRTY_ACTIVE_SYS);
if ((n & ERTS_PSFLG_IN_RUNQ) && !refc_inced) {
erts_proc_inc_refc(p);
refc_inced = 1;
@@ -13207,33 +12880,40 @@ erts_continue_exit_process(Process *p)
erts_deref_dist_entry(dep);
}
- /*
- * Pre-build the EXIT tuple if there are any links.
- */
- if (lnk) {
- DeclareTmpHeap(tmp_heap,4,p);
- Eterm exit_tuple;
- Uint exit_tuple_sz;
- Eterm* hp;
-
- UseTmpHeap(4,p);
- hp = &tmp_heap[0];
+ pectxt.c_p = p;
+ pectxt.reason = reason;
- exit_tuple = TUPLE3(hp, am_EXIT, p->common.id, reason);
+ if (links) {
+ erts_link_tree_foreach_delete(&links,
+ erts_proc_exit_handle_link,
+ (void *) &pectxt);
+ ASSERT(!links);
+ }
- exit_tuple_sz = size_object(exit_tuple);
+ if (monitors) {
+ erts_monitor_tree_foreach_delete(&monitors,
+ erts_proc_exit_handle_monitor,
+ (void *) &pectxt);
+ ASSERT(!monitors);
+ }
- {
- ExitLinkContext context = {p, reason, exit_tuple, exit_tuple_sz};
- erts_sweep_links(lnk, &doit_exit_link, &context);
- }
- UnUseTmpHeap(4,p);
+ if (lt_monitors) {
+ erts_monitor_list_foreach_delete(&lt_monitors,
+ erts_proc_exit_handle_monitor,
+ (void *) &pectxt);
+ ASSERT(!lt_monitors);
}
- {
- ExitMonitorContext context = {reason, p};
- erts_sweep_monitors(mon,&doit_exit_monitor,&context); /* Allocates TmpHeap, but we
- have none here */
+ erts_proc_sig_fetch(p);
+ /*
+ * erts_proc_sig_handle_exit() implements yielding.
+ * However, this function cannot handle it yet... loop
+ * until done...
+ */
+ while (!0) {
+ int reds = CONTEXT_REDS;
+ if (erts_proc_sig_handle_exit(p, &reds))
+ break;
}
erts_proc_lock(p, ERTS_PROC_LOCK_MAIN);
@@ -13272,6 +12952,40 @@ erts_continue_exit_process(Process *p)
BUMP_ALL_REDS(p);
}
+Process *
+erts_try_lock_sig_free_proc(Eterm pid, ErtsProcLocks locks)
+{
+ Process *rp = erts_proc_lookup_raw(pid);
+ erts_aint32_t state;
+
+ if (!rp)
+ return NULL;
+
+ ERTS_LC_ASSERT(!erts_proc_lc_my_proc_locks(rp));
+
+ state = erts_atomic32_read_nob(&rp->state);
+ if (state & ERTS_PSFLG_EXITING)
+ return NULL;
+
+ if (state & (ERTS_PSFLG_SIG_IN_Q|ERTS_PSFLG_SIG_Q))
+ return ERTS_PROC_LOCK_BUSY;
+ if (erts_proc_trylock(rp, locks) == EBUSY)
+ return ERTS_PROC_LOCK_BUSY;
+
+ state = erts_atomic32_read_nob(&rp->state);
+ if (state & ERTS_PSFLG_EXITING) {
+ erts_proc_unlock(rp, locks);
+ return NULL;
+ }
+
+ if (state & (ERTS_PSFLG_SIG_IN_Q|ERTS_PSFLG_SIG_Q)) {
+ erts_proc_unlock(rp, locks);
+ return ERTS_PROC_LOCK_BUSY;
+ }
+
+ return rp;
+}
+
/*
* Stack dump functions follow.
*/
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index ebf990c837..0550fb05b5 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ typedef struct process Process;
#include "erl_process_dict.h"
#include "erl_node_container_utils.h"
#include "erl_node_tables.h"
-#include "erl_monitors.h"
+#include "erl_monitor_link.h"
#include "erl_hl_timer.h"
#include "erl_time.h"
#include "erl_atom_table.h"
@@ -75,8 +75,6 @@ typedef struct process Process;
#include "erl_thr_progress.h"
#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY
-struct ErtsNodesMonitor_;
-
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT 0
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT 0
@@ -311,7 +309,6 @@ typedef enum {
ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX,
ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX,
ERTS_SSI_AUX_WORK_MISC_IX,
- ERTS_SSI_AUX_WORK_PENDING_EXITERS_IX,
ERTS_SSI_AUX_WORK_SET_TMO_IX,
ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX,
ERTS_SSI_AUX_WORK_YIELD_IX,
@@ -345,8 +342,6 @@ typedef enum {
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_MISC \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_IX)
-#define ERTS_SSI_AUX_WORK_PENDING_EXITERS \
- (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_PENDING_EXITERS_IX)
#define ERTS_SSI_AUX_WORK_SET_TMO \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_SET_TMO_IX)
#define ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK \
@@ -491,7 +486,6 @@ struct ErtsRunQueue_ {
int wakeup_other_reds;
struct {
- ErtsProcList *pending_exiters;
Uint context_switches;
Uint reductions;
@@ -986,14 +980,10 @@ struct process {
Process *next; /* Pointer to next process in run queue */
- struct ErtsNodesMonitor_ *nodes_monitors;
-
- ErtsSuspendMonitor *suspend_monitors; /* Processes suspended by
- this process via
- erlang:suspend_process/1 */
-
- ErlMessageQueue msg; /* Message queue */
+ ErtsMonitor *suspend_monitors; /* Processes suspended by this process via
+ erlang:suspend_process/1 */
+ ErtsSignalPrivQueues sig_qs; /* Signal queues */
ErtsBifTimers *bif_timers; /* Bif timers aiming at this process */
ProcDict *dictionary; /* Process dictionary, may be NULL */
@@ -1052,9 +1042,8 @@ struct process {
erts_atomic32_t state; /* Process state flags (see ERTS_PSFLG_*) */
erts_atomic32_t dirty_state; /* Process dirty state flags (see ERTS_PDSFLG_*) */
- ErlMessageInQueue msg_inq;
+ ErtsSignalInQueue sig_inq;
ErlTraceMessageQueue *trace_msg_q;
- ErtsPendExit pending_exit;
erts_proc_lock_t lock;
ErtsSchedulerData *scheduler_data;
Eterm suspendee;
@@ -1088,6 +1077,7 @@ struct process {
#endif
};
+extern Eterm erts_init_process_id; /* pid of init process */
extern const Process erts_invalid_process;
#ifdef CHECK_FOR_HOLES
@@ -1164,20 +1154,20 @@ void erts_check_for_holes(Process* p);
#define ERTS_PSFLG_IN_PRQ_LOW ERTS_PSFLG_BIT(3)
#define ERTS_PSFLG_FREE ERTS_PSFLG_BIT(4)
#define ERTS_PSFLG_EXITING ERTS_PSFLG_BIT(5)
-#define ERTS_PSFLG_PENDING_EXIT ERTS_PSFLG_BIT(6)
+#define ERTS_PSFLG_UNUSED ERTS_PSFLG_BIT(6)
#define ERTS_PSFLG_ACTIVE ERTS_PSFLG_BIT(7)
#define ERTS_PSFLG_IN_RUNQ ERTS_PSFLG_BIT(8)
#define ERTS_PSFLG_RUNNING ERTS_PSFLG_BIT(9)
#define ERTS_PSFLG_SUSPENDED ERTS_PSFLG_BIT(10)
#define ERTS_PSFLG_GC ERTS_PSFLG_BIT(11)
-/* #define ERTS_PSFLG_ ERTS_PSFLG_BIT(12) */
-#define ERTS_PSFLG_TRAP_EXIT ERTS_PSFLG_BIT(13)
+#define ERTS_PSFLG_SYS_TASKS ERTS_PSFLG_BIT(12)
+#define ERTS_PSFLG_SIG_IN_Q ERTS_PSFLG_BIT(13)
#define ERTS_PSFLG_ACTIVE_SYS ERTS_PSFLG_BIT(14)
#define ERTS_PSFLG_RUNNING_SYS ERTS_PSFLG_BIT(15)
#define ERTS_PSFLG_PROXY ERTS_PSFLG_BIT(16)
#define ERTS_PSFLG_DELAYED_SYS ERTS_PSFLG_BIT(17)
#define ERTS_PSFLG_OFF_HEAP_MSGQ ERTS_PSFLG_BIT(18)
-/* #define ERTS_PSFLG_ ERTS_PSFLG_BIT(19) */
+#define ERTS_PSFLG_SIG_Q ERTS_PSFLG_BIT(19)
#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(20)
#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(21)
#define ERTS_PSFLG_DIRTY_ACTIVE_SYS ERTS_PSFLG_BIT(22)
@@ -1196,7 +1186,6 @@ void erts_check_for_holes(Process* p);
| ERTS_PSFLG_IN_PRQ_LOW)
#define ERTS_PSFLGS_VOLATILE_HEAP (ERTS_PSFLG_EXITING \
- | ERTS_PSFLG_PENDING_EXIT \
| ERTS_PSFLG_DIRTY_RUNNING \
| ERTS_PSFLG_DIRTY_RUNNING_SYS)
@@ -1379,6 +1368,9 @@ extern int erts_system_profile_ts_type;
#define F_DIRTY_MAJOR_GC (1 << 23) /* Dirty major GC scheduled */
#define F_DIRTY_MINOR_GC (1 << 24) /* Dirty minor GC scheduled */
#define F_HIBERNATED (1 << 25) /* Hibernated */
+#define F_LOCAL_SIGS_ONLY (1 << 26)
+#define F_TRAP_EXIT (1 << 27) /* Trapping exit */
+#define F_DEFERRED_SAVED_LAST (1 << 28)
/*
* F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent
@@ -1444,7 +1436,7 @@ extern int erts_system_profile_ts_type;
| F_TRACE_ARITY_ONLY | F_TRACE_RETURN_TO \
| F_TRACE_SILENT | F_TRACE_SCHED_PROCS | F_TRACE_PORTS \
| F_TRACE_SCHED_PORTS | F_TRACE_SCHED_NO \
- | F_TRACE_SCHED_EXIT)
+ | F_TRACE_SCHED_EXIT )
#define ERTS_TRACEE_MODIFIER_FLAGS \
@@ -1457,6 +1449,14 @@ extern int erts_system_profile_ts_type;
#define SEQ_TRACE_FLAG(N) (1 << (ERTS_TRACE_TS_TYPE_BITS + (N)))
+#define ERTS_SIG_ENABLE_TRACE_FLAGS \
+ ( F_TRACE_RECEIVE | F_TRACE_PROCS)
+
+/*
+ * F_TRACE_RECEIVE is always enabled/disable via signaling.
+ * F_TRACE_PROCS enable/disable F_TRACE_PROCS_SIG via signaling.
+ */
+
/* Sequential trace flags */
/* SEQ_TRACE_TIMESTAMP_MASK is a bit-field */
@@ -1483,10 +1483,6 @@ extern int erts_system_profile_ts_type;
#define DT_UTAG_FLAGS(P) ((P)->dt_utag_flags)
#endif
-/* Option flags to erts_send_exit_signal() */
-#define ERTS_XSIG_FLG_IGN_KILL (((Uint32) 1) << 0)
-#define ERTS_XSIG_FLG_NO_IGN_NORMAL (((Uint32) 1) << 1)
-
#define CANCEL_TIMER(P) \
do { \
if ((P)->flags & (F_INSLPQUEUE|F_TIMO)) { \
@@ -1733,6 +1729,7 @@ struct db_fixation;
void erts_schedule_ets_free_fixation(Eterm pid, struct db_fixation*);
void erts_schedule_flush_trace_messages(Process *proc, int force_on_proc);
int erts_flush_trace_messages(Process *c_p, ErtsProcLocks locks);
+int erts_sig_prio(Eterm pid, int prio);
#if defined(ERTS_ENABLE_LOCK_CHECK)
int erts_dbg_check_halloc_lock(Process *p);
@@ -1781,8 +1778,10 @@ ErtsRunQueue *erts_schedid2runq(Uint);
Process *erts_schedule(ErtsSchedulerData *, Process*, int);
void erts_schedule_misc_op(void (*)(void *), void *);
Eterm erl_create_process(Process*, Eterm, Eterm, Eterm, ErlSpawnOpts*);
+void erts_set_self_exiting(Process *, Eterm);
void erts_do_exit_process(Process*, Eterm);
void erts_continue_exit_process(Process *);
+void erts_proc_exit_link(Process *, ErtsLink *, Uint16, Eterm, Eterm);
/* Begin System profile */
Uint erts_runnable_process_count(void);
/* End System profile */
@@ -1799,7 +1798,14 @@ void erts_print_run_queue_info(fmtfn_t, void *to_arg, ErtsRunQueue*);
void erts_dump_extended_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg);
void erts_dump_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg);
-Eterm erts_get_process_priority(Process *p);
+typedef struct {
+ Process *c_p;
+ Eterm reason;
+} ErtsProcExitContext;
+void erts_proc_exit_handle_monitor(ErtsMonitor *mon, void *vctxt);
+void erts_proc_exit_handle_link(ErtsLink *lnk, void *vctxt);
+
+Eterm erts_get_process_priority(erts_aint32_t state);
Eterm erts_set_process_priority(Process *p, Eterm prio);
Uint erts_get_total_context_switches(void);
@@ -1817,18 +1823,6 @@ void erts_suspend(Process*, ErtsProcLocks, Port*);
void erts_resume(Process*, ErtsProcLocks);
int erts_resume_processes(ErtsProcList *);
-int erts_send_exit_signal(Process *,
- Eterm,
- Process *,
- ErtsProcLocks *,
- Eterm,
- Eterm,
- Process *,
- Uint32);
-void erts_handle_pending_exit(Process *, ErtsProcLocks);
-#define ERTS_PROC_PENDING_EXIT(P) \
- (ERTS_PSFLG_PENDING_EXIT & erts_atomic32_read_acqb(&(P)->state))
-
void erts_deep_process_dump(fmtfn_t, void *);
Eterm erts_get_reader_groups_map(Process *c_p);
@@ -1860,6 +1854,8 @@ do { \
ErtsSchedulerData *erts_get_scheduler_data(void);
void erts_schedule_process(Process *, erts_aint32_t, ErtsProcLocks);
+erts_aint32_t erts_proc_sys_schedule(Process *p, erts_aint32_t state,
+ erts_aint32_t enable_flag);
ERTS_GLB_INLINE void erts_proc_notify_new_message(Process *p, ErtsProcLocks locks);
ERTS_GLB_INLINE void erts_schedule_dirty_sys_execution(Process *c_p);
@@ -1891,8 +1887,7 @@ erts_schedule_dirty_sys_execution(Process *c_p)
/* Don't set dirty-active-sys if we are about to exit... */
while (!(a & (ERTS_PSFLG_DIRTY_ACTIVE_SYS
- | ERTS_PSFLG_EXITING
- | ERTS_PSFLG_PENDING_EXIT))) {
+ | ERTS_PSFLG_EXITING))) {
e = a;
n = a | ERTS_PSFLG_DIRTY_ACTIVE_SYS;
a = erts_atomic32_cmpxchg_mb(&c_p->state, n, e);
@@ -2313,6 +2308,8 @@ erts_try_change_runq_proc(Process *p, ErtsRunQueue *rq)
{
erts_aint_t old_rqint, new_rqint;
+ ASSERT(rq);
+
new_rqint = (erts_aint_t) rq;
old_rqint = (erts_aint_t) erts_atomic_read_nob(&p->run_queue);
while (1) {
@@ -2577,6 +2574,8 @@ ERTS_TIME2REDS_IMPL__(ErtsMonotonicTime start, ErtsMonotonicTime end)
}
#endif
+Process *erts_try_lock_sig_free_proc(Eterm pid,
+ ErtsProcLocks locks);
Process *erts_pid2proc_not_running(Process *,
ErtsProcLocks,
diff --git a/erts/emulator/beam/erl_process_dump.c b/erts/emulator/beam/erl_process_dump.c
index 05e7bcdea2..00659f9f49 100644
--- a/erts/emulator/beam/erl_process_dump.c
+++ b/erts/emulator/beam/erl_process_dump.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2003-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2003-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -35,6 +35,7 @@
#include "erl_map.h"
#define ERTS_WANT_EXTERNAL_TAGS
#include "external.h"
+#include "erl_proc_sig_queue.h"
#define PTR_FMT "%bpX"
#define ETERM_FMT "%beX"
@@ -96,17 +97,35 @@ erts_deep_process_dump(fmtfn_t to, void *to_arg)
dump_binaries(to, to_arg, all_binaries);
}
+static void
+monitor_size(ErtsMonitor *mon, void *vsize)
+{
+ *((Uint *) vsize) += erts_monitor_size(mon);
+}
+
+static void
+link_size(ErtsMonitor *lnk, void *vsize)
+{
+ *((Uint *) vsize) += erts_link_size(lnk);
+}
+
Uint erts_process_memory(Process *p, int incl_msg_inq) {
- ErtsMessage *mp;
Uint size = 0;
struct saved_calls *scb;
size += sizeof(Process);
- if (incl_msg_inq)
- ERTS_MSGQ_MV_INQ2PRIVQ(p);
+ if (incl_msg_inq) {
+ erts_proc_lock(p, ERTS_PROC_LOCK_MSGQ);
+ erts_proc_sig_fetch(p);
+ erts_proc_unlock(p, ERTS_PROC_LOCK_MSGQ);
+ }
- erts_doforall_links(ERTS_P_LINKS(p), &erts_one_link_size, &size);
- erts_doforall_monitors(ERTS_P_MONITORS(p), &erts_one_mon_size, &size);
+ erts_link_tree_foreach(ERTS_P_LINKS(p),
+ link_size, (void *) &size);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(p),
+ monitor_size, (void *) &size);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(p),
+ monitor_size, (void *) &size);
size += (p->heap_sz + p->mbuf_sz) * sizeof(Eterm);
if (p->abandoned_heap)
size += (p->hend - p->heap) * sizeof(Eterm);
@@ -114,11 +133,16 @@ Uint erts_process_memory(Process *p, int incl_msg_inq) {
size += (p->old_hend - p->old_heap) * sizeof(Eterm);
- size += p->msg.len * sizeof(ErtsMessage);
+ size += p->sig_qs.len * sizeof(ErtsMessage);
- for (mp = p->msg.first; mp; mp = mp->next)
- if (mp->data.attached)
- size += erts_msg_attached_data_size(mp)*sizeof(Eterm);
+ ERTS_FOREACH_SIG_PRIVQS(
+ p, mp,
+ {
+ if (ERTS_SIG_IS_NON_MSG((ErtsSignal *) mp))
+ size += erts_proc_sig_signal_size((ErtsSignal *) mp);
+ else if (mp->data.attached)
+ size += erts_msg_attached_data_size(mp) * sizeof(Eterm);
+ });
if (p->arg_reg != p->def_arg_reg) {
size += p->arity * sizeof(p->arg_reg[0]);
@@ -137,31 +161,48 @@ Uint erts_process_memory(Process *p, int incl_msg_inq) {
return size;
}
+static ERTS_INLINE void
+dump_msg(fmtfn_t to, void *to_arg, ErtsMessage *mp)
+{
+ if (ERTS_SIG_IS_MSG((ErtsSignal *) mp)) {
+ Eterm mesg = ERL_MESSAGE_TERM(mp);
+ if (is_value(mesg))
+ dump_element(to, to_arg, mesg);
+ else
+ dump_dist_ext(to, to_arg, mp->data.dist_ext);
+ mesg = ERL_MESSAGE_TOKEN(mp);
+ erts_print(to, to_arg, ":");
+ dump_element(to, to_arg, mesg);
+ erts_print(to, to_arg, "\n");
+ }
+}
+
+static ERTS_INLINE void
+heap_dump_msg(fmtfn_t to, void *to_arg, ErtsMessage *mp)
+{
+ if (ERTS_SIG_IS_MSG((ErtsSignal *) mp)) {
+ Eterm mesg = ERL_MESSAGE_TERM(mp);
+ if (is_value(mesg))
+ heap_dump(to, to_arg, mesg);
+ mesg = ERL_MESSAGE_TOKEN(mp);
+ heap_dump(to, to_arg, mesg);
+ }
+}
+
static void
dump_process_info(fmtfn_t to, void *to_arg, Process *p)
{
Eterm* sp;
- ErtsMessage* mp;
int yreg = -1;
if (ERTS_TRACE_FLAGS(p) & F_SENSITIVE)
return;
- ERTS_MSGQ_MV_INQ2PRIVQ(p);
+ erts_proc_sig_fetch(p);
- if (p->msg.first) {
+ if (p->sig_qs.first || p->sig_qs.cont) {
erts_print(to, to_arg, "=proc_messages:%T\n", p->common.id);
- for (mp = p->msg.first; mp != NULL; mp = mp->next) {
- Eterm mesg = ERL_MESSAGE_TERM(mp);
- if (is_value(mesg))
- dump_element(to, to_arg, mesg);
- else
- dump_dist_ext(to, to_arg, mp->data.dist_ext);
- mesg = ERL_MESSAGE_TOKEN(mp);
- erts_print(to, to_arg, ":");
- dump_element(to, to_arg, mesg);
- erts_print(to, to_arg, "\n");
- }
+ ERTS_FOREACH_SIG_PRIVQS(p, mp, dump_msg(to, to_arg, mp));
}
if (p->dictionary) {
@@ -183,13 +224,10 @@ dump_process_info(fmtfn_t to, void *to_arg, Process *p)
heap_dump(to, to_arg, term);
}
}
- for (mp = p->msg.first; mp != NULL; mp = mp->next) {
- Eterm mesg = ERL_MESSAGE_TERM(mp);
- if (is_value(mesg))
- heap_dump(to, to_arg, mesg);
- mesg = ERL_MESSAGE_TOKEN(mp);
- heap_dump(to, to_arg, mesg);
- }
+
+ if (p->sig_qs.first || p->sig_qs.cont)
+ ERTS_FOREACH_SIG_PRIVQS(p, mp, heap_dump_msg(to, to_arg, mp));
+
if (p->dictionary) {
erts_deep_dictionary_dump(to, to_arg, p->dictionary, heap_dump);
}
@@ -997,8 +1035,8 @@ erts_dump_extended_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg)
erts_print(to, to_arg, "FREE"); break;
case ERTS_PSFLG_EXITING:
erts_print(to, to_arg, "EXITING"); break;
- case ERTS_PSFLG_PENDING_EXIT:
- erts_print(to, to_arg, "PENDING_EXIT"); break;
+ case ERTS_PSFLG_UNUSED:
+ erts_print(to, to_arg, "UNUSED"); break;
case ERTS_PSFLG_ACTIVE:
erts_print(to, to_arg, "ACTIVE"); break;
case ERTS_PSFLG_IN_RUNQ:
@@ -1009,8 +1047,10 @@ erts_dump_extended_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg)
erts_print(to, to_arg, "SUSPENDED"); break;
case ERTS_PSFLG_GC:
erts_print(to, to_arg, "GC"); break;
- case ERTS_PSFLG_TRAP_EXIT:
- erts_print(to, to_arg, "TRAP_EXIT"); break;
+ case ERTS_PSFLG_SYS_TASKS:
+ erts_print(to, to_arg, "SYS_TASKS"); break;
+ case ERTS_PSFLG_SIG_IN_Q:
+ erts_print(to, to_arg, "SIG_IN_Q"); break;
case ERTS_PSFLG_ACTIVE_SYS:
erts_print(to, to_arg, "ACTIVE_SYS"); break;
case ERTS_PSFLG_RUNNING_SYS:
@@ -1021,6 +1061,8 @@ erts_dump_extended_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg)
erts_print(to, to_arg, "DELAYED_SYS"); break;
case ERTS_PSFLG_OFF_HEAP_MSGQ:
erts_print(to, to_arg, "OFF_HEAP_MSGQ"); break;
+ case ERTS_PSFLG_SIG_Q:
+ erts_print(to, to_arg, "SIG_Q"); break;
case ERTS_PSFLG_DIRTY_CPU_PROC:
erts_print(to, to_arg, "DIRTY_CPU_PROC"); break;
case ERTS_PSFLG_DIRTY_IO_PROC:
diff --git a/erts/emulator/beam/erl_process_lock.c b/erts/emulator/beam/erl_process_lock.c
index 431867f27e..44c7892040 100644
--- a/erts/emulator/beam/erl_process_lock.c
+++ b/erts/emulator/beam/erl_process_lock.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2007-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2007-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -101,7 +101,6 @@ static void cleanup_tse(void);
#ifdef ERTS_ENABLE_LOCK_CHECK
static struct {
Sint16 proc_lock_main;
- Sint16 proc_lock_link;
Sint16 proc_lock_msgq;
Sint16 proc_lock_btm;
Sint16 proc_lock_status;
@@ -140,7 +139,6 @@ erts_init_proc_lock(int cpus)
#endif
#ifdef ERTS_ENABLE_LOCK_CHECK
lc_id.proc_lock_main = erts_lc_get_lock_order_id("proc_main");
- lc_id.proc_lock_link = erts_lc_get_lock_order_id("proc_link");
lc_id.proc_lock_msgq = erts_lc_get_lock_order_id("proc_msgq");
lc_id.proc_lock_btm = erts_lc_get_lock_order_id("proc_btm");
lc_id.proc_lock_status = erts_lc_get_lock_order_id("proc_status");
@@ -1055,12 +1053,6 @@ erts_proc_lock_init(Process *p)
#ifdef ERTS_ENABLE_LOCK_CHECK
erts_lc_trylock(1, &p->lock.main.lc);
#endif
- erts_mtx_init(&p->lock.link, "proc_link", p->common.id,
- ERTS_LOCK_FLAGS_CATEGORY_PROCESS);
- ethr_mutex_lock(&p->lock.link.mtx);
-#ifdef ERTS_ENABLE_LOCK_CHECK
- erts_lc_trylock(1, &p->lock.link.lc);
-#endif
erts_mtx_init(&p->lock.msgq, "proc_msgq", p->common.id,
ERTS_LOCK_FLAGS_CATEGORY_PROCESS);
ethr_mutex_lock(&p->lock.msgq.mtx);
@@ -1102,7 +1094,6 @@ erts_proc_lock_fin(Process *p)
{
#if ERTS_PROC_LOCK_RAW_MUTEX_IMPL
erts_mtx_destroy(&p->lock.main);
- erts_mtx_destroy(&p->lock.link);
erts_mtx_destroy(&p->lock.msgq);
erts_mtx_destroy(&p->lock.btm);
erts_mtx_destroy(&p->lock.status);
@@ -1144,8 +1135,6 @@ void erts_lcnt_enable_proc_lock_count(Process *proc, int enable) {
erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN,
"proc_main", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK);
- erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK,
- "proc_link", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK);
erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ,
"proc_msgq", proc->common.id, ERTS_LOCK_TYPE_PROCLOCK);
erts_lcnt_init_lock_info_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_BTM,
@@ -1200,10 +1189,6 @@ erts_proc_lc_lock(Process *p, ErtsProcLocks locks, char *file, unsigned int line
lck.id = lc_id.proc_lock_main;
erts_lc_lock_x(&lck,file,line);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_lock_x(&lck,file,line);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
lck.id = lc_id.proc_lock_msgq;
erts_lc_lock_x(&lck,file,line);
@@ -1233,10 +1218,6 @@ erts_proc_lc_trylock(Process *p, ErtsProcLocks locks, int locked,
lck.id = lc_id.proc_lock_main;
erts_lc_trylock_x(locked, &lck, file, line);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_trylock_x(locked, &lck, file, line);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
lck.id = lc_id.proc_lock_msgq;
erts_lc_trylock_x(locked, &lck, file, line);
@@ -1277,10 +1258,6 @@ erts_proc_lc_unlock(Process *p, ErtsProcLocks locks)
lck.id = lc_id.proc_lock_msgq;
erts_lc_unlock(&lck);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_unlock(&lck);
- }
if (locks & ERTS_PROC_LOCK_MAIN) {
lck.id = lc_id.proc_lock_main;
erts_lc_unlock(&lck);
@@ -1312,10 +1289,6 @@ erts_proc_lc_might_unlock(Process *p, ErtsProcLocks locks)
lck.id = lc_id.proc_lock_msgq;
erts_lc_might_unlock(&lck);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_might_unlock(&lck);
- }
if (locks & ERTS_PROC_LOCK_MAIN) {
lck.id = lc_id.proc_lock_main;
erts_lc_might_unlock(&lck);
@@ -1323,8 +1296,6 @@ erts_proc_lc_might_unlock(Process *p, ErtsProcLocks locks)
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
if (locks & ERTS_PROC_LOCK_MAIN)
erts_lc_might_unlock(&p->lock.main.lc);
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_lc_might_unlock(&p->lock.link.lc);
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_lc_might_unlock(&p->lock.msgq.lc);
if (locks & ERTS_PROC_LOCK_BTM)
@@ -1348,10 +1319,6 @@ erts_proc_lc_require_lock(Process *p, ErtsProcLocks locks, char *file,
lck.id = lc_id.proc_lock_main;
erts_lc_require_lock(&lck, file, line);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_require_lock(&lck, file, line);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
lck.id = lc_id.proc_lock_msgq;
erts_lc_require_lock(&lck, file, line);
@@ -1371,8 +1338,6 @@ erts_proc_lc_require_lock(Process *p, ErtsProcLocks locks, char *file,
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
if (locks & ERTS_PROC_LOCK_MAIN)
erts_lc_require_lock(&p->lock.main.lc, file, line);
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_lc_require_lock(&p->lock.link.lc, file, line);
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_lc_require_lock(&p->lock.msgq.lc, file, line);
if (locks & ERTS_PROC_LOCK_BTM)
@@ -1407,10 +1372,6 @@ erts_proc_lc_unrequire_lock(Process *p, ErtsProcLocks locks)
lck.id = lc_id.proc_lock_msgq;
erts_lc_unrequire_lock(&lck);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- lck.id = lc_id.proc_lock_link;
- erts_lc_unrequire_lock(&lck);
- }
if (locks & ERTS_PROC_LOCK_MAIN) {
lck.id = lc_id.proc_lock_main;
erts_lc_unrequire_lock(&lck);
@@ -1418,8 +1379,6 @@ erts_proc_lc_unrequire_lock(Process *p, ErtsProcLocks locks)
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
if (locks & ERTS_PROC_LOCK_MAIN)
erts_lc_unrequire_lock(&p->lock.main.lc);
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_lc_unrequire_lock(&p->lock.link.lc);
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_lc_unrequire_lock(&p->lock.msgq.lc);
if (locks & ERTS_PROC_LOCK_BTM)
@@ -1443,8 +1402,6 @@ erts_proc_lc_trylock_force_busy(Process *p, ErtsProcLocks locks)
if (locks & ERTS_PROC_LOCK_MAIN)
lck.id = lc_id.proc_lock_main;
- else if (locks & ERTS_PROC_LOCK_LINK)
- lck.id = lc_id.proc_lock_link;
else if (locks & ERTS_PROC_LOCK_MSGQ)
lck.id = lc_id.proc_lock_msgq;
else if (locks & ERTS_PROC_LOCK_BTM)
@@ -1487,10 +1444,6 @@ void erts_proc_lc_chk_only_proc(Process *p, ErtsProcLocks locks)
have_locks[have_locks_len].id = lc_id.proc_lock_main;
have_locks[have_locks_len++].extra = p->common.id;
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- have_locks[have_locks_len].id = lc_id.proc_lock_link;
- have_locks[have_locks_len++].extra = p->common.id;
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
have_locks[have_locks_len].id = lc_id.proc_lock_msgq;
have_locks[have_locks_len++].extra = p->common.id;
@@ -1511,8 +1464,6 @@ void erts_proc_lc_chk_only_proc(Process *p, ErtsProcLocks locks)
erts_lc_lock_t have_locks[6];
if (locks & ERTS_PROC_LOCK_MAIN)
have_locks[have_locks_len++] = p->lock.main.lc;
- if (locks & ERTS_PROC_LOCK_LINK)
- have_locks[have_locks_len++] = p->lock.link.lc;
if (locks & ERTS_PROC_LOCK_MSGQ)
have_locks[have_locks_len++] = p->lock.msgq.lc;
if (locks & ERTS_PROC_LOCK_BTM)
@@ -1540,10 +1491,6 @@ erts_proc_lc_chk_have_proc_locks(Process *p, ErtsProcLocks locks)
have_locks[have_locks_len].id = lc_id.proc_lock_main;
have_locks[have_locks_len++].extra = p->common.id;
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- have_locks[have_locks_len].id = lc_id.proc_lock_link;
- have_locks[have_locks_len++].extra = p->common.id;
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
have_locks[have_locks_len].id = lc_id.proc_lock_msgq;
have_locks[have_locks_len++].extra = p->common.id;
@@ -1564,8 +1511,6 @@ erts_proc_lc_chk_have_proc_locks(Process *p, ErtsProcLocks locks)
erts_lc_lock_t have_locks[6];
if (locks & ERTS_PROC_LOCK_MAIN)
have_locks[have_locks_len++] = p->lock.main.lc;
- if (locks & ERTS_PROC_LOCK_LINK)
- have_locks[have_locks_len++] = p->lock.link.lc;
if (locks & ERTS_PROC_LOCK_MSGQ)
have_locks[have_locks_len++] = p->lock.msgq.lc;
if (locks & ERTS_PROC_LOCK_BTM)
@@ -1603,14 +1548,6 @@ erts_proc_lc_chk_proc_locks(Process *p, ErtsProcLocks locks)
have_not_locks[have_not_locks_len].id = lc_id.proc_lock_main;
have_not_locks[have_not_locks_len++].extra = p->common.id;
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- have_locks[have_locks_len].id = lc_id.proc_lock_link;
- have_locks[have_locks_len++].extra = p->common.id;
- }
- else {
- have_not_locks[have_not_locks_len].id = lc_id.proc_lock_link;
- have_not_locks[have_not_locks_len++].extra = p->common.id;
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
have_locks[have_locks_len].id = lc_id.proc_lock_msgq;
have_locks[have_locks_len++].extra = p->common.id;
@@ -1651,10 +1588,6 @@ erts_proc_lc_chk_proc_locks(Process *p, ErtsProcLocks locks)
have_locks[have_locks_len++] = p->lock.main.lc;
else
have_not_locks[have_not_locks_len++] = p->lock.main.lc;
- if (locks & ERTS_PROC_LOCK_LINK)
- have_locks[have_locks_len++] = p->lock.link.lc;
- else
- have_not_locks[have_not_locks_len++] = p->lock.link.lc;
if (locks & ERTS_PROC_LOCK_MSGQ)
have_locks[have_locks_len++] = p->lock.msgq.lc;
else
@@ -1680,13 +1613,10 @@ erts_proc_lc_chk_proc_locks(Process *p, ErtsProcLocks locks)
ErtsProcLocks
erts_proc_lc_my_proc_locks(Process *p)
{
- int resv[6];
+ int resv[5];
ErtsProcLocks res = 0;
#if ERTS_PROC_LOCK_OWN_IMPL
- erts_lc_lock_t locks[6] = {ERTS_LC_LOCK_INIT(lc_id.proc_lock_main,
- p->common.id,
- ERTS_LOCK_TYPE_PROCLOCK),
- ERTS_LC_LOCK_INIT(lc_id.proc_lock_link,
+ erts_lc_lock_t locks[5] = {ERTS_LC_LOCK_INIT(lc_id.proc_lock_main,
p->common.id,
ERTS_LOCK_TYPE_PROCLOCK),
ERTS_LC_LOCK_INIT(lc_id.proc_lock_msgq,
@@ -1702,26 +1632,23 @@ erts_proc_lc_my_proc_locks(Process *p)
p->common.id,
ERTS_LOCK_TYPE_PROCLOCK)};
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
- erts_lc_lock_t locks[6] = {p->lock.main.lc,
- p->lock.link.lc,
+ erts_lc_lock_t locks[5] = {p->lock.main.lc,
p->lock.msgq.lc,
p->lock.btm.lc,
p->lock.status.lc,
p->lock.trace.lc};
#endif
- erts_lc_have_locks(resv, locks, 6);
+ erts_lc_have_locks(resv, locks, 5);
if (resv[0])
res |= ERTS_PROC_LOCK_MAIN;
if (resv[1])
- res |= ERTS_PROC_LOCK_LINK;
- if (resv[2])
res |= ERTS_PROC_LOCK_MSGQ;
- if (resv[3])
+ if (resv[2])
res |= ERTS_PROC_LOCK_BTM;
- if (resv[4])
+ if (resv[3])
res |= ERTS_PROC_LOCK_STATUS;
- if (resv[5])
+ if (resv[4])
res |= ERTS_PROC_LOCK_TRACE;
return res;
@@ -1730,15 +1657,14 @@ erts_proc_lc_my_proc_locks(Process *p)
void
erts_proc_lc_chk_no_proc_locks(char *file, int line)
{
- int resv[6];
- int ids[6] = {lc_id.proc_lock_main,
- lc_id.proc_lock_link,
+ int resv[5];
+ int ids[5] = {lc_id.proc_lock_main,
lc_id.proc_lock_msgq,
lc_id.proc_lock_btm,
lc_id.proc_lock_status,
lc_id.proc_lock_trace};
- erts_lc_have_lock_ids(resv, ids, 6);
- if (!ERTS_IS_CRASH_DUMPING && (resv[0] || resv[1] || resv[2] || resv[3] || resv[4] || resv[5])) {
+ erts_lc_have_lock_ids(resv, ids, 5);
+ if (!ERTS_IS_CRASH_DUMPING && (resv[0] || resv[1] || resv[2] || resv[3] || resv[4])) {
erts_lc_fail("%s:%d: Thread has process locks locked when expected "
"not to have any process locks locked",
file, line);
diff --git a/erts/emulator/beam/erl_process_lock.h b/erts/emulator/beam/erl_process_lock.h
index 9d5691d3c4..43f396c547 100644
--- a/erts/emulator/beam/erl_process_lock.h
+++ b/erts/emulator/beam/erl_process_lock.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2007-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2007-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -66,7 +66,7 @@
#endif
-#define ERTS_PROC_LOCK_MAX_BIT 5
+#define ERTS_PROC_LOCK_MAX_BIT 4
typedef erts_aint32_t ErtsProcLocks;
@@ -82,19 +82,17 @@ typedef struct erts_proc_lock_t_ {
/* Each erts_mtx_t has its own lock counter ^ */
#define ERTS_LCNT_PROCLOCK_IDX_MAIN 0
- #define ERTS_LCNT_PROCLOCK_IDX_LINK 1
- #define ERTS_LCNT_PROCLOCK_IDX_MSGQ 2
- #define ERTS_LCNT_PROCLOCK_IDX_BTM 3
- #define ERTS_LCNT_PROCLOCK_IDX_STATUS 4
- #define ERTS_LCNT_PROCLOCK_IDX_TRACE 5
+ #define ERTS_LCNT_PROCLOCK_IDX_MSGQ 1
+ #define ERTS_LCNT_PROCLOCK_IDX_BTM 2
+ #define ERTS_LCNT_PROCLOCK_IDX_STATUS 3
+ #define ERTS_LCNT_PROCLOCK_IDX_TRACE 4
- #define ERTS_LCNT_PROCLOCK_COUNT 6
+ #define ERTS_LCNT_PROCLOCK_COUNT 5
erts_lcnt_ref_t lcnt_carrier;
#endif
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
erts_mtx_t main;
- erts_mtx_t link;
erts_mtx_t msgq;
erts_mtx_t btm;
erts_mtx_t status;
@@ -118,27 +116,18 @@ typedef struct erts_proc_lock_t_ {
#define ERTS_PROC_LOCK_MAIN (((ErtsProcLocks) 1) << 0)
/*
- * Link lock:
- * Protects the following fields in the process structure:
- * * nlinks
- * * monitors
- * * suspend_monitors
- */
-#define ERTS_PROC_LOCK_LINK (((ErtsProcLocks) 1) << 1)
-
-/*
* Message queue lock:
* Protects the following fields in the process structure:
* * msg_inq
*/
-#define ERTS_PROC_LOCK_MSGQ (((ErtsProcLocks) 1) << 2)
+#define ERTS_PROC_LOCK_MSGQ (((ErtsProcLocks) 1) << 1)
/*
* Bif timer lock:
* Protects the following fields in the process structure:
* * bif_timers
*/
-#define ERTS_PROC_LOCK_BTM (((ErtsProcLocks) 1) << 3)
+#define ERTS_PROC_LOCK_BTM (((ErtsProcLocks) 1) << 2)
/*
* Status lock:
@@ -148,7 +137,7 @@ typedef struct erts_proc_lock_t_ {
* * sys_tasks
* * ...
*/
-#define ERTS_PROC_LOCK_STATUS (((ErtsProcLocks) 1) << 4)
+#define ERTS_PROC_LOCK_STATUS (((ErtsProcLocks) 1) << 3)
/*
* Trace message lock:
@@ -277,9 +266,6 @@ void erts_lcnt_proc_lock(erts_proc_lock_t *lock, ErtsProcLocks locks) {
if (locks & ERTS_PROC_LOCK_MAIN) {
erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
erts_lcnt_lock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ);
}
@@ -307,9 +293,6 @@ void erts_lcnt_proc_lock_post_x(erts_proc_lock_t *lock, ErtsProcLocks locks,
if (locks & ERTS_PROC_LOCK_MAIN) {
erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN, file, line);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK, file, line);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
erts_lcnt_lock_post_x_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ, file, line);
}
@@ -336,9 +319,6 @@ void erts_lcnt_proc_lock_unacquire(erts_proc_lock_t *lock, ErtsProcLocks locks)
if (locks & ERTS_PROC_LOCK_MAIN) {
erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
erts_lcnt_lock_unacquire_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ);
}
@@ -365,9 +345,6 @@ void erts_lcnt_proc_unlock(erts_proc_lock_t *lock, ErtsProcLocks locks) {
if (locks & ERTS_PROC_LOCK_MAIN) {
erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
erts_lcnt_unlock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ);
}
@@ -394,9 +371,6 @@ void erts_lcnt_proc_trylock(erts_proc_lock_t *lock, ErtsProcLocks locks, int res
if (locks & ERTS_PROC_LOCK_MAIN) {
erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MAIN, res);
}
- if (locks & ERTS_PROC_LOCK_LINK) {
- erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_LINK, res);
- }
if (locks & ERTS_PROC_LOCK_MSGQ) {
erts_lcnt_trylock_idx(carrier, ERTS_LCNT_PROCLOCK_IDX_MSGQ, res);
}
@@ -640,9 +614,6 @@ erts_proc_raw_trylock__(Process *p, ErtsProcLocks locks)
if (locks & ERTS_PROC_LOCK_MAIN)
if (erts_mtx_trylock(&p->lock.main) == EBUSY)
goto busy_main;
- if (locks & ERTS_PROC_LOCK_LINK)
- if (erts_mtx_trylock(&p->lock.link) == EBUSY)
- goto busy_link;
if (locks & ERTS_PROC_LOCK_MSGQ)
if (erts_mtx_trylock(&p->lock.msgq) == EBUSY)
goto busy_msgq;
@@ -668,9 +639,6 @@ busy_btm:
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_mtx_unlock(&p->lock.msgq);
busy_msgq:
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_mtx_unlock(&p->lock.link);
-busy_link:
if (locks & ERTS_PROC_LOCK_MAIN)
erts_mtx_unlock(&p->lock.main);
busy_main:
@@ -741,8 +709,6 @@ erts_proc_lock__(Process *p,
#elif ERTS_PROC_LOCK_RAW_MUTEX_IMPL
if (locks & ERTS_PROC_LOCK_MAIN)
erts_mtx_lock(&p->lock.main);
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_mtx_lock(&p->lock.link);
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_mtx_lock(&p->lock.msgq);
if (locks & ERTS_PROC_LOCK_BTM)
@@ -844,8 +810,6 @@ erts_proc_unlock__(Process *p,
erts_mtx_unlock(&p->lock.btm);
if (locks & ERTS_PROC_LOCK_MSGQ)
erts_mtx_unlock(&p->lock.msgq);
- if (locks & ERTS_PROC_LOCK_LINK)
- erts_mtx_unlock(&p->lock.link);
if (locks & ERTS_PROC_LOCK_MAIN)
erts_mtx_unlock(&p->lock.main);
#endif
diff --git a/erts/emulator/beam/erl_ptab.h b/erts/emulator/beam/erl_ptab.h
index 4858cc8ab8..94f0247492 100644
--- a/erts/emulator/beam/erl_ptab.h
+++ b/erts/emulator/beam/erl_ptab.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2012-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2012-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -35,7 +35,7 @@
#include "erl_thr_progress.h"
#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY
#include "erl_alloc.h"
-#include "erl_monitors.h"
+#include "erl_monitor_link.h"
#define ERTS_TRACER(P) ((P)->common.tracer)
#define ERTS_TRACER_MODULE(T) (CAR(list_val(T)))
@@ -44,6 +44,7 @@
#define ERTS_P_LINKS(P) ((P)->common.u.alive.links)
#define ERTS_P_MONITORS(P) ((P)->common.u.alive.monitors)
+#define ERTS_P_LT_MONITORS(P) ((P)->common.u.alive.lt_monitors)
#define IS_TRACED(p) \
(ERTS_TRACER(p) != NIL)
@@ -68,6 +69,7 @@ typedef struct {
struct reg_proc *reg;
ErtsLink *links;
ErtsMonitor *monitors;
+ ErtsMonitor *lt_monitors;
} alive;
/* --- While being released --- */
diff --git a/erts/emulator/beam/erl_rbtree.h b/erts/emulator/beam/erl_rbtree.h
index e59d6900b0..e50abf5cec 100644
--- a/erts/emulator/beam/erl_rbtree.h
+++ b/erts/emulator/beam/erl_rbtree.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2015-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2015-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -50,8 +50,14 @@
* - ERTS_RBT_GET_LEFT(T) - Get left child node.
* - ERTS_RBT_SET_LEFT(T, L) - Set left child node.
* - ERTS_RBT_GET_KEY(T) - Get key of node.
- * - ERTS_RBT_IS_LT(KX, KY) - Is key KX less than key KY?
- * - ERTS_RBT_IS_EQ(KX, KY) - Is key KX equal to key KY?
+ * Either:
+ * - ERTS_RBT_CMP_KEYS(KX, KY) - Compare keys...
+ * or:
+ * - ERTS_RBT_IS_LT(KX, KY) - Is key KX less than key KY?
+ * - ERTS_RBT_IS_EQ(KX, KY) - Is key KX equal to key KY?
+ *
+ * If ERTS_RBT_CMP_KEYS is defined ERTS_RBT_IS_LT and
+ * ERTS_RBT_IS_EQ will be redefined using ERTS_RBT_CMP_KEYS
*
* Optional defines:
*
@@ -337,6 +343,15 @@
* Should only be used for debuging.
*/
+#ifdef ERTS_RBT_CMP_KEYS
+
+# undef ERTS_RBT_IS_LT
+# define ERTS_RBT_IS_LT(KX, KY) (ERTS_RBT_CMP_KEYS((KX), (KY)) < 0)
+
+# undef ERTS_RBT_IS_EQ
+# define ERTS_RBT_IS_EQ(KX, KY) (ERTS_RBT_CMP_KEYS((KX), (KY)) == 0)
+
+#endif
/*
* Check that we have all mandatory defines
@@ -396,6 +411,16 @@
# error Missing definition of ERTS_RBT_IS_EQ
#endif
+#undef ERTS_RBT_IS_GT__
+#ifdef ERTS_RBT_CMP_KEYS
+# define ERTS_RBT_IS_GT__(KX, KY) \
+ (ERTS_RBT_CMP_KEYS((KX), (KY)) > 0)
+#else
+# define ERTS_RBT_IS_GT__(KX, KY) \
+ (!ERTS_RBT_IS_LT((KX), (KY)) && !ERTS_RBT_IS_EQ((KX), (KY)))
+
+#endif
+
#if defined(ERTS_RBT_HARD_DEBUG) || defined(DEBUG)
# ifndef ERTS_RBT_DEBUG
# define ERTS_RBT_DEBUG 1
@@ -1007,19 +1032,30 @@ ERTS_RBT_FUNC__(insert_aux__)(ERTS_RBT_T **root, ERTS_RBT_T *n, int lookup)
ERTS_RBT_T *p, *x = *root;
while (1) {
- ERTS_RBT_KEY_T kx;
+ ERTS_RBT_KEY_T kx = ERTS_RBT_GET_KEY(x);
ERTS_RBT_T *c;
+ int kres;
+#ifdef ERTS_RBT_CMP_KEYS
+ int kcmp = ERTS_RBT_CMP_KEYS(kn, kx);
+ kres = kcmp == 0;
+#else
+ kres = ERTS_RBT_IS_EQ(kn, kx);
+#endif
- kx = ERTS_RBT_GET_KEY(x);
-
- if (lookup && ERTS_RBT_IS_EQ(kn, kx)) {
+ if (lookup && kres) {
ERTS_RBT_HDBG_CHECK_TREE__(*root, NULL);
return x;
}
- if (ERTS_RBT_IS_LT(kn, kx)) {
+#ifdef ERTS_RBT_CMP_KEYS
+ kres = kcmp < 0;
+#else
+ kres = ERTS_RBT_IS_LT(kn, kx);
+#endif
+
+ if (kres) {
c = ERTS_RBT_GET_LEFT(x);
if (!c) {
ERTS_RBT_SET_PARENT(n, x);
@@ -1075,6 +1111,101 @@ ERTS_RBT_FUNC__(insert)(ERTS_RBT_T **root, ERTS_RBT_T *n)
#endif /* ERTS_RBT_WANT_INSERT */
+#ifdef ERTS_RBT_WANT_LOOKUP_CREATE
+static ERTS_INLINE ERTS_RBT_T *
+ERTS_RBT_FUNC__(lookup_create)(ERTS_RBT_T **root,
+ ERTS_RBT_KEY_T kn,
+ ERTS_RBT_T *(*create)(ERTS_RBT_KEY_T, void *),
+ void *arg,
+ int *created)
+{
+ ERTS_RBT_T *n;
+ ERTS_RBT_HDBG_CHECK_TREE__(*root, NULL);
+
+ if (!*root) {
+ n = (*create)(kn, arg);
+ ERTS_RBT_INIT_EMPTY_TNODE(n);
+ ERTS_RBT_ASSERT(ERTS_RBT_IS_EQ(ERTS_RBT_GET_KEY(n), kn));
+ ERTS_RBT_SET_BLACK(n);
+ *root = n;
+ *created = !0;
+#ifdef ERTS_RBT_UPDATE_ATTACHED_DATA_CHGROOT
+ ERTS_RBT_UPDATE_ATTACHED_DATA_CHGROOT(NULL, n);
+#endif
+ }
+ else {
+ ERTS_RBT_T *p, *x = *root;
+
+ while (1) {
+ ERTS_RBT_KEY_T kx = ERTS_RBT_GET_KEY(x);
+ ERTS_RBT_T *c;
+ int kres;
+#ifdef ERTS_RBT_CMP_KEYS
+ int kcmp = ERTS_RBT_CMP_KEYS(kn, kx);
+ kres = kcmp == 0;
+#else
+ kres = ERTS_RBT_IS_EQ(kn, kx);
+#endif
+
+ if (kres) {
+
+ ERTS_RBT_HDBG_CHECK_TREE__(*root, NULL);
+
+ *created = 0;
+ return x;
+ }
+
+#ifdef ERTS_RBT_CMP_KEYS
+ kres = kcmp < 0;
+#else
+ kres = ERTS_RBT_IS_LT(kn, kx);
+#endif
+
+ if (kres) {
+ c = ERTS_RBT_GET_LEFT(x);
+ if (!c) {
+ n = (*create)(kn, arg);
+ ERTS_RBT_INIT_EMPTY_TNODE(n);
+ ERTS_RBT_ASSERT(ERTS_RBT_IS_EQ(ERTS_RBT_GET_KEY(n), kn));
+ *created = !0;
+ ERTS_RBT_SET_PARENT(n, x);
+ ERTS_RBT_SET_LEFT(x, n);
+ p = x;
+ break;
+ }
+ }
+ else {
+ c = ERTS_RBT_GET_RIGHT(x);
+ if (!c) {
+ n = (*create)(kn, arg);
+ ERTS_RBT_INIT_EMPTY_TNODE(n);
+ ERTS_RBT_ASSERT(ERTS_RBT_IS_EQ(ERTS_RBT_GET_KEY(n), kn));
+ *created = !0;
+ ERTS_RBT_SET_PARENT(n, x);
+ ERTS_RBT_SET_RIGHT(x, n);
+ p = x;
+ break;
+ }
+ }
+
+ x = c;
+ }
+
+ ERTS_RBT_ASSERT(ERTS_RBT_IS_EQ(ERTS_RBT_GET_KEY(n), kn));
+ ERTS_RBT_ASSERT(p);
+
+ ERTS_RBT_SET_RED(n);
+ if (ERTS_RBT_IS_RED(p))
+ ERTS_RBT_FUNC__(insert_fixup__)(root, n);
+ }
+
+ ERTS_RBT_HDBG_CHECK_TREE__(*root, n);
+
+ return n;
+}
+
+#endif /* ERTS_RBT_WANT_LOOKUP_CREATE */
+
#ifdef ERTS_RBT_WANT_LOOKUP
static ERTS_RBT_API_INLINE__ ERTS_RBT_T *
@@ -1088,11 +1219,24 @@ ERTS_RBT_FUNC__(lookup)(ERTS_RBT_T *root, ERTS_RBT_KEY_T key)
while (1) {
ERTS_RBT_KEY_T kx = ERTS_RBT_GET_KEY(x);
ERTS_RBT_T *c;
+ int kres;
+#ifdef ERTS_RBT_CMP_KEYS
+ int kcmp = ERTS_RBT_CMP_KEYS(key, kx);
+ kres = kcmp == 0;
+#else
+ kres = ERTS_RBT_IS_EQ(key, kx);
+#endif
- if (ERTS_RBT_IS_EQ(key, kx))
+ if (kres)
return x;
- if (ERTS_RBT_IS_LT(key, kx)) {
+#ifdef ERTS_RBT_CMP_KEYS
+ kres = kcmp < 0;
+#else
+ kres = ERTS_RBT_IS_LT(key, kx);
+#endif
+
+ if (kres) {
c = ERTS_RBT_GET_LEFT(x);
if (!c)
return NULL;
@@ -1426,14 +1570,14 @@ ERTS_RBT_FUNC__(foreach_large)(ERTS_RBT_T *root,
#ifdef ERTS_RBT_WANT_FOREACH_YIELDING
-static ERTS_RBT_API_INLINE__ void
+static ERTS_RBT_API_INLINE__ int
ERTS_RBT_FUNC__(foreach_yielding)(ERTS_RBT_T *root,
void (*op)(ERTS_RBT_T *, void *),
void *arg,
ERTS_RBT_YIELD_STATE_T__ *ystate,
Sint ylimit)
{
- (void) ERTS_RBT_FUNC__(foreach_unordered__)(*root, 0, op, arg,
+ return ERTS_RBT_FUNC__(foreach_unordered__)(&root, 0, op, arg,
1, ystate, ylimit);
}
@@ -1630,8 +1774,7 @@ ERTS_RBT_FUNC__(hdbg_check_tree)(ERTS_RBT_T *root, ERTS_RBT_T *n)
kx = ERTS_RBT_GET_KEY(x);
kc = ERTS_RBT_GET_KEY(c);
- ERTS_RBT_ASSERT(ERTS_RBT_IS_LT(kc, kx)
- || ERTS_RBT_IS_EQ(kc, kx));
+ ERTS_RBT_ASSERT(!ERTS_RBT_IS_GT__(kc, kx));
x = c;
}
@@ -1649,8 +1792,8 @@ ERTS_RBT_FUNC__(hdbg_check_tree)(ERTS_RBT_T *root, ERTS_RBT_T *n)
kx = ERTS_RBT_GET_KEY(x);
kc = ERTS_RBT_GET_KEY(c);
- ERTS_RBT_ASSERT(ERTS_RBT_IS_LT(kx, kc)
- || ERTS_RBT_IS_EQ(kx, kc));
+ ERTS_RBT_ASSERT(!ERTS_RBT_IS_GT__(kx, kc));
+
x = c;
}
@@ -1672,8 +1815,8 @@ ERTS_RBT_FUNC__(hdbg_check_tree)(ERTS_RBT_T *root, ERTS_RBT_T *n)
kx = ERTS_RBT_GET_KEY(x);
kc = ERTS_RBT_GET_KEY(c);
- ERTS_RBT_ASSERT(ERTS_RBT_IS_LT(kx, kc)
- || ERTS_RBT_IS_EQ(kx, kc));
+ ERTS_RBT_ASSERT(!ERTS_RBT_IS_GT__(kx, kc));
+
/* Go down tree of x's sibling... */
x = c;
break;
@@ -1707,6 +1850,7 @@ ERTS_RBT_FUNC__(hdbg_check_tree)(ERTS_RBT_T *root, ERTS_RBT_T *n)
#undef ERTS_RBT_NEED_FOREACH_ORDERED__
#undef ERTS_RBT_NEED_HDBG_CHECK_TREE__
#undef ERTS_RBT_HDBG_CHECK_TREE__
+#undef ERTS_RBT_IS_GT__
#ifdef ERTS_RBT_UNDEF
# undef ERTS_RBT_PREFIX
@@ -1727,6 +1871,7 @@ ERTS_RBT_FUNC__(hdbg_check_tree)(ERTS_RBT_T *root, ERTS_RBT_T *n)
# undef ERTS_RBT_GET_LEFT
# undef ERTS_RBT_SET_LEFT
# undef ERTS_RBT_GET_KEY
+# undef ERTS_RBT_CMP_KEYS
# undef ERTS_RBT_IS_LT
# undef ERTS_RBT_IS_EQ
# undef ERTS_RBT_UNDEF
diff --git a/erts/emulator/beam/erl_term.h b/erts/emulator/beam/erl_term.h
index 3dd1c2555c..18483fca35 100644
--- a/erts/emulator/beam/erl_term.h
+++ b/erts/emulator/beam/erl_term.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2000-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2000-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -345,6 +345,9 @@ _ET_DECLARE_CHECKED(Uint,thing_subtag,Eterm)
*
* To help find code which makes unwarranted assumptions about zero,
* we now use a non-zero bit-pattern in debug mode.
+ *
+ * In order to be able to differentiata against values, the non-value
+ * needs to be tagged as a header of some sort.
*/
#if ET_DEBUG
# ifdef HIPE
@@ -355,7 +358,7 @@ _ET_DECLARE_CHECKED(Uint,thing_subtag,Eterm)
# define THE_NON_VALUE _make_header(0,_TAG_HEADER_FLOAT)
# endif
#else
-#define THE_NON_VALUE (0)
+#define THE_NON_VALUE (TAG_PRIMARY_HEADER)
#endif
#define is_non_value(x) ((x) == THE_NON_VALUE)
#define is_value(x) ((x) != THE_NON_VALUE)
diff --git a/erts/emulator/beam/erl_time.h b/erts/emulator/beam/erl_time.h
index 65211e4e6f..968f21fd51 100644
--- a/erts/emulator/beam/erl_time.h
+++ b/erts/emulator/beam/erl_time.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2006-2017. All Rights Reserved.
+ * Copyright Ericsson AB 2006-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@
#ifndef ERL_TIME_H__
#define ERL_TIME_H__
+#include "erl_monitor_link.h"
+
#if 0
# define ERTS_TW_DEBUG
#endif
@@ -79,8 +81,8 @@ typedef ErtsMonotonicTime * ErtsNextTimeoutRef;
extern SysTimeval erts_first_emu_time;
-void erts_monitor_time_offset(Eterm id, Eterm ref);
-int erts_demonitor_time_offset(Eterm ref);
+void erts_monitor_time_offset(ErtsMonitor *mon);
+void erts_demonitor_time_offset(ErtsMonitor *mon);
int erts_init_time_sup(int, ErtsTimeWarpMode);
void erts_late_init_time_sup(void);
diff --git a/erts/emulator/beam/erl_time_sup.c b/erts/emulator/beam/erl_time_sup.c
index 8cbdf9fa0f..e5bb3cc15f 100644
--- a/erts/emulator/beam/erl_time_sup.c
+++ b/erts/emulator/beam/erl_time_sup.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1999-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1999-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -35,6 +35,7 @@
#include "erl_time.h"
#include "erl_driver.h"
#include "erl_nif.h"
+#include "erl_proc_sig_queue.h"
static erts_mtx_t erts_get_time_mtx;
@@ -1870,36 +1871,33 @@ void erts_get_now_cpu(Uint* megasec, Uint* sec, Uint* microsec) {
#include "big.h"
void
-erts_monitor_time_offset(Eterm id, Eterm ref)
+erts_monitor_time_offset(ErtsMonitor *mon)
{
erts_mtx_lock(&erts_get_time_mtx);
- erts_add_monitor(&time_offset_monitors, MON_TIME_OFFSET, ref, id, NIL);
+ erts_monitor_list_insert(&time_offset_monitors, mon);
no_time_offset_monitors++;
erts_mtx_unlock(&erts_get_time_mtx);
}
-int
-erts_demonitor_time_offset(Eterm ref)
+void
+erts_demonitor_time_offset(ErtsMonitor *mon)
{
- int res;
- ErtsMonitor *mon;
- ASSERT(is_internal_ref(ref));
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ ASSERT(erts_monitor_is_origin(mon));
+ ASSERT(mon->type == ERTS_MON_TYPE_TIME_OFFSET);
+
erts_mtx_lock(&erts_get_time_mtx);
- if (is_internal_ordinary_ref(ref))
- mon = erts_remove_monitor(&time_offset_monitors, ref);
- else
- mon = NULL;
- if (!mon)
- res = 0;
- else {
- ASSERT(no_time_offset_monitors > 0);
- no_time_offset_monitors--;
- res = 1;
- }
+
+ ASSERT(erts_monitor_is_in_table(&mdp->target));
+
+ erts_monitor_list_delete(&time_offset_monitors, &mdp->target);
+
+ ASSERT(no_time_offset_monitors > 0);
+ no_time_offset_monitors--;
+
erts_mtx_unlock(&erts_get_time_mtx);
- if (res)
- erts_destroy_monitor(mon);
- return res;
+
+ erts_monitor_release_both(mdp);
}
typedef struct {
@@ -1917,17 +1915,19 @@ static void
save_time_offset_monitor(ErtsMonitor *mon, void *vcntxt)
{
ErtsTimeOffsetMonitorContext *cntxt;
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
Eterm *from_hp, *to_hp;
Uint mix;
int hix;
cntxt = (ErtsTimeOffsetMonitorContext *) vcntxt;
mix = (cntxt->ix)++;
- cntxt->to_mon_info[mix].pid = mon->u.pid;
+ ASSERT(is_internal_pid(mon->other.item));
+ cntxt->to_mon_info[mix].pid = mon->other.item;
to_hp = &cntxt->to_mon_info[mix].heap[0];
- ASSERT(is_internal_ordinary_ref(mon->ref));
- from_hp = internal_ref_val(mon->ref);
+ ASSERT(is_internal_ordinary_ref(mdp->ref));
+ from_hp = internal_ref_val(mdp->ref);
ASSERT(thing_arityval(*from_hp) + 1 == ERTS_REF_THING_SIZE);
for (hix = 0; hix < ERTS_REF_THING_SIZE; hix++)
@@ -1972,9 +1972,9 @@ send_time_offset_changed_notifications(void *new_offsetp)
cntxt.ix = 0;
cntxt.to_mon_info = to_mon_info;
- erts_doforall_monitors(time_offset_monitors,
- save_time_offset_monitor,
- &cntxt);
+ erts_monitor_list_foreach(time_offset_monitors,
+ save_time_offset_monitor,
+ &cntxt);
ASSERT(cntxt.ix == no_monitors);
}
@@ -2008,26 +2008,14 @@ send_time_offset_changed_notifications(void *new_offsetp)
ASSERT(*patch_refp == THE_NON_VALUE);
for (mix = 0; mix < no_monitors; mix++) {
- Process *rp = erts_proc_lookup(to_mon_info[mix].pid);
- if (rp) {
- Eterm ref = to_mon_info[mix].ref;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK;
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (erts_lookup_monitor(ERTS_P_MONITORS(rp), ref)) {
- ErtsMessage *mp;
- ErlOffHeap *ohp;
- Eterm message;
-
- mp = erts_alloc_message_heap(rp, &rp_locks,
- hsz, &hp, &ohp);
- *patch_refp = ref;
- ASSERT(hsz == size_object(message_template));
- message = copy_struct(message_template, hsz, &hp, ohp);
- erts_queue_message(rp, rp_locks, mp, message, am_clock_service);
- }
- erts_proc_unlock(rp, rp_locks);
- }
- }
+ *patch_refp = to_mon_info[mix].ref;
+ erts_proc_sig_send_persistent_monitor_msg(ERTS_MON_TYPE_TIME_OFFSET,
+ *patch_refp,
+ am_clock_service,
+ to_mon_info[mix].pid,
+ message_template,
+ hsz);
+ }
erts_free(ERTS_ALC_T_TMP, tmp);
}
diff --git a/erts/emulator/beam/external.h b/erts/emulator/beam/external.h
index f9f8abcc27..bbd9b4bad2 100644
--- a/erts/emulator/beam/external.h
+++ b/erts/emulator/beam/external.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2016. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -83,7 +83,10 @@
#ifndef ERL_EXTERNAL_H__
#define ERL_EXTERNAL_H__
+#define ERL_NODE_TABLES_BASIC_ONLY
#include "erl_node_tables.h"
+#undef ERL_NODE_TABLES_BASIC_ONLY
+#include "erl_alloc.h"
#define ERTS_ATOM_CACHE_SIZE 2048
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 0f23027752..d853b2e352 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -87,9 +87,7 @@ typedef struct
{
erts_mtx_t lock;
ErtsMonitor* root;
- int pending_failed_fire;
- int is_dying;
-
+ Uint refc;
size_t user_data_sz;
} ErtsResourceMonitors;
@@ -116,7 +114,8 @@ extern void erts_pre_nif(struct enif_environment_t*, Process*,
struct erl_module_nif*, Process* tracee);
extern void erts_post_nif(struct enif_environment_t* env);
extern void erts_resource_stop(ErtsResource*, ErlNifEvent, int is_direct_call);
-void erts_fire_nif_monitor(ErtsResource*, Eterm pid, Eterm ref);
+void erts_fire_nif_monitor(ErtsMonitor *tmon);
+void erts_nif_demonitored(ErtsResource* resource);
extern Eterm erts_nif_taints(Process* p);
extern void erts_print_nif_taints(fmtfn_t to, void* to_arg);
void erts_unload_nif(struct erl_module_nif* nif);
@@ -886,6 +885,7 @@ void erts_init_trap_export(Export* ep, Eterm m, Eterm f, Uint a,
Eterm (*bif)(Process*, Eterm*, BeamInstr*));
void erts_init_bif(void);
Eterm erl_send(Process *p, Eterm to, Eterm msg);
+int erts_set_group_leader(Process *proc, Eterm new_gl);
/* erl_bif_op.c */
@@ -908,7 +908,6 @@ extern erts_atomic_t erts_copy_literal_area__;
#define ERTS_COPY_LITERAL_AREA() \
((ErtsLiteralArea *) erts_atomic_read_nob(&erts_copy_literal_area__))
extern Process *erts_literal_area_collector;
-extern Process *erts_dirty_process_code_checker;
extern Process *erts_code_purger;
@@ -1072,7 +1071,7 @@ void erts_move_multi_frags(Eterm** hpp, ErlOffHeap*, ErlHeapFragment* first,
Eterm* refs, unsigned nrefs, int literals);
/* Utilities */
-extern void erts_delete_nodes_monitors(Process *, ErtsProcLocks);
+void erts_monitor_nodes_delete(ErtsMonitor *);
extern Eterm erts_monitor_nodes(Process *, Eterm, Eterm);
extern Eterm erts_processes_monitoring_nodes(Process *);
extern int erts_do_net_exits(DistEntry*, Eterm);
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index e4a5f2b6b6..b2afdc6bf2 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2017. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -53,6 +53,7 @@
#include "erl_hl_timer.h"
#include "erl_time.h"
#include "erl_io_queue.h"
+#include "erl_proc_sig_queue.h"
extern ErlDrvEntry fd_driver_entry;
extern ErlDrvEntry vanilla_driver_entry;
@@ -366,6 +367,7 @@ static Port *create_port(char *name,
prt->drv_ptr = driver;
ERTS_P_LINKS(prt) = NULL;
ERTS_P_MONITORS(prt) = NULL;
+ ERTS_P_LT_MONITORS(prt) = NULL;
prt->linebuf = NULL;
prt->suspended = NULL;
erts_init_port_data(prt);
@@ -748,8 +750,8 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
Port *creator_port;
Port* port;
erts_driver_t *driver;
- Process *rp;
erts_mtx_t *driver_lock = NULL;
+ ErtsLinkData *ldp;
ERTS_CHK_NO_PROC_LOCKS;
@@ -761,17 +763,13 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
if (creator_port == ERTS_INVALID_ERL_DRV_PORT)
return ERTS_INVALID_ERL_DRV_PORT;
- rp = erts_proc_lookup(pid);
- if (!rp)
- return ERTS_INVALID_ERL_DRV_PORT;
-
ERTS_LC_ASSERT(erts_lc_is_port_locked(creator_port));
driver = creator_port->drv_ptr;
erts_rwmtx_rlock(&erts_driver_list_lock);
if (!erts_ddll_driver_ok(driver->handle)) {
erts_rwmtx_runlock(&erts_driver_list_lock);
- return ERTS_INVALID_ERL_DRV_PORT;
+ return ERTS_INVALID_ERL_DRV_PORT;
}
if (driver->handle != NULL) {
@@ -799,9 +797,15 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
}
ERTS_LC_ASSERT(erts_lc_is_port_locked(port));
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (ERTS_PROC_IS_EXITING(rp)) {
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
+ ldp = erts_link_create(ERTS_LNK_TYPE_PORT,
+ port->common.id, pid);
+ ASSERT(ldp->a.other.item == pid);
+ ASSERT(ldp->b.other.item == port->common.id);
+ erts_link_tree_insert(&ERTS_P_LINKS(port), &ldp->a);
+
+ if (!erts_proc_sig_send_link(NULL, pid, &ldp->b)) {
+ erts_link_tree_delete(&ERTS_P_LINKS(port), &ldp->a);
+ erts_link_release_both(ldp);
if (driver->handle) {
erts_rwmtx_rlock(&erts_driver_list_lock);
erts_ddll_decrement_port_count(driver->handle);
@@ -812,10 +816,6 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
return ERTS_INVALID_ERL_DRV_PORT;
}
- erts_add_link(&ERTS_P_LINKS(port), LINK_PID, pid);
- erts_add_link(&ERTS_P_LINKS(rp), LINK_PID, port->common.id);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
-
if (!driver_lock) {
ErtsXPortsList *xplp = xports_list_alloc();
xplp->port = port;
@@ -1167,21 +1167,10 @@ erts_schedule_proc2port_signal(Process *c_p,
* otherwise, next receive will *not* work
* as expected!
*/
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
-
- if (ERTS_PROC_PENDING_EXIT(c_p)) {
- /* need to exit caller instead */
- erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- KILL_CATCHES(c_p);
- c_p->freason = EXC_EXIT;
- return ERTS_PORT_OP_CALLER_EXIT;
- }
-
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- c_p->msg.save = c_p->msg.last;
- erts_proc_unlock(c_p, (ERTS_PROC_LOCKS_MSG_RECEIVE
- | ERTS_PROC_LOCK_MAIN));
+ ERTS_RECV_MARK_SAVE(c_p);
+ ERTS_RECV_MARK_SET(c_p);
+ erts_proc_unlock(c_p, ERTS_PROC_LOCK_MAIN);
}
@@ -1239,29 +1228,12 @@ erts_schedule_port2port_signal(Eterm port_num, ErtsProc2PortSigData *sigdp,
static ERTS_INLINE void
send_badsig(Port *prt) {
- ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
- Process* rp;
Eterm connected = ERTS_PORT_GET_CONNECTED(prt);
ERTS_CHK_NO_PROC_LOCKS;
ERTS_LC_ASSERT(erts_get_scheduler_id());
-
ASSERT(is_internal_pid(connected));
-
- rp = erts_proc_lookup_raw(connected);
- if (rp) {
- erts_proc_lock(rp, rp_locks);
- if (!ERTS_PROC_IS_EXITING(rp))
- (void) erts_send_exit_signal(NULL,
- prt->common.id,
- rp,
- &rp_locks,
- am_badsig,
- NIL,
- NULL,
- 0);
- if (rp_locks)
- erts_proc_unlock(rp, rp_locks);
- } /* exit sent */
+ erts_proc_sig_send_exit(NULL, prt->common.id, connected,
+ am_badsig, NIL, 0);
} /* send_badsig */
static void
@@ -2194,11 +2166,11 @@ call_deliver_port_exit(int bang_op,
}
if (broken_link) {
- ErtsLink *lnk = erts_remove_link(&ERTS_P_LINKS(prt), from);
- if (lnk)
- erts_destroy_link(lnk);
- else
+ ErtsLink *lnk = erts_link_tree_lookup(ERTS_P_LINKS(prt), from);
+ if (!lnk)
return ERTS_PORT_OP_DROPPED;
+ erts_link_tree_delete(&ERTS_P_LINKS(prt), lnk);
+ erts_link_release(lnk);
}
if (IS_TRACED_FL(prt, F_TRACE_RECEIVE))
@@ -2367,27 +2339,30 @@ set_port_connected(int bang_op,
#endif
}
else { /* Port BIF operation */
- Process *rp = erts_proc_lookup_raw(connect);
- if (!rp)
- return ERTS_PORT_OP_DROPPED;
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- if (ERTS_PROC_IS_EXITING(rp)) {
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- return ERTS_PORT_OP_DROPPED;
- }
-
- erts_add_link(&ERTS_P_LINKS(rp), LINK_PID, prt->common.id);
- erts_add_link(&ERTS_P_LINKS(prt), LINK_PID, connect);
-
- if (IS_TRACED_FL(rp, F_TRACE_PROCS))
- trace_proc(NULL, 0, rp, am_getting_linked, prt->common.id);
+ int created;
+ ErtsLink *lnk;
+
+ if (is_not_internal_pid(connect))
+ return ERTS_PORT_OP_DROPPED;
+
+ lnk = erts_link_tree_lookup_create(&ERTS_P_LINKS(prt), &created,
+ ERTS_LNK_TYPE_PORT, prt->common.id,
+ connect);
+ if (created) {
+ ErtsLinkData *ldp;
+ ErtsLink *olnk = erts_link_to_other(lnk, &ldp);
+ ASSERT(olnk->other.item == prt->common.id);
+ if (!erts_proc_sig_send_link(NULL, connect, olnk)) {
+ erts_link_tree_delete(&ERTS_P_LINKS(prt), lnk);
+ erts_link_release_both(ldp);
+ return ERTS_PORT_OP_DROPPED;
+ }
+ if (IS_TRACED_FL(prt, F_TRACE_PORTS))
+ trace_port(prt, am_getting_linked, connect);
+ }
ERTS_PORT_SET_CONNECTED(prt, connect);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
-
- if (IS_TRACED_FL(prt, F_TRACE_PORTS))
- trace_port(prt, am_getting_linked, connect);
if (IS_TRACED_FL(prt, F_TRACE_RECEIVE))
trace_port_receive(prt, from, am_connect, connect);
if (IS_TRACED_FL(prt, F_TRACE_SEND)) {
@@ -2494,13 +2469,24 @@ erts_port_connect(Process *c_p,
}
static void
-port_unlink(Port *prt, Eterm from)
+port_unlink(Port *prt, ErtsLink *lnk)
{
- ErtsLink *lnk = erts_remove_link(&ERTS_P_LINKS(prt), from);
- if (lnk) {
+ ErtsLinkData *ldp;
+ ErtsLink *dlnk, *llnk;
+
+ llnk = erts_link_to_other(lnk, &ldp);
+ dlnk = erts_link_tree_key_delete(&ERTS_P_LINKS(prt), llnk);
+ if (!dlnk)
+ erts_link_release(lnk);
+ else {
if (IS_TRACED_FL(prt, F_TRACE_PORTS))
- trace_port(prt, am_getting_unlinked, from);
- erts_destroy_link(lnk);
+ trace_port(prt, am_getting_unlinked, llnk->other.item);
+ if (dlnk == llnk)
+ erts_link_release_both(ldp);
+ else {
+ erts_link_release(lnk);
+ erts_link_release(dlnk);
+ }
}
}
@@ -2508,14 +2494,14 @@ static int
port_sig_unlink(Port *prt, erts_aint32_t state, int op, ErtsProc2PortSigData *sigdp)
{
if (op == ERTS_PROC2PORT_SIG_EXEC)
- port_unlink(prt, sigdp->u.unlink.from);
+ port_unlink(prt, sigdp->u.unlink.lnk);
if (sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY)
port_sched_op_reply(sigdp->caller, sigdp->ref, am_true, prt);
return ERTS_PORT_REDS_UNLINK;
}
ErtsPortOpResult
-erts_port_unlink(Process *c_p, Port *prt, Eterm from, Eterm *refp)
+erts_port_unlink(Process *c_p, Port *prt, ErtsLink *lnk, Eterm *refp)
{
ErtsProc2PortSigData *sigdp;
ErtsTryImmDrvCallState try_call_state
@@ -2528,7 +2514,7 @@ erts_port_unlink(Process *c_p, Port *prt, Eterm from, Eterm *refp)
switch (try_imm_drv_call(&try_call_state)) {
case ERTS_TRY_IMM_DRV_CALL_OK:
- port_unlink(prt, from);
+ port_unlink(prt, lnk);
finalize_imm_drv_call(&try_call_state);
BUMP_REDS(c_p, ERTS_PORT_REDS_UNLINK);
return ERTS_PORT_OP_DONE;
@@ -2541,11 +2527,12 @@ erts_port_unlink(Process *c_p, Port *prt, Eterm from, Eterm *refp)
sigdp = erts_port_task_alloc_p2p_sig_data();
sigdp->flags = ERTS_P2P_SIG_TYPE_UNLINK;
- sigdp->u.unlink.from = from;
-
+ sigdp->u.unlink.port_id = prt->common.id;
+ sigdp->u.unlink.lnk = lnk;
+
return erts_schedule_proc2port_signal(c_p,
prt,
- c_p ? c_p->common.id : from,
+ c_p->common.id,
refp,
sigdp,
0,
@@ -2554,45 +2541,24 @@ erts_port_unlink(Process *c_p, Port *prt, Eterm from, Eterm *refp)
}
static void
-port_link_failure(Eterm port_id, Eterm linker)
+port_link_failure(Eterm port_id, ErtsLink *lnk)
{
- Process *rp;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCKS_XSIG_SEND;
- ASSERT(is_internal_pid(linker));
- rp = erts_pid2proc(NULL, 0, linker, rp_locks);
- if (rp) {
- ErtsLink *rlnk = erts_remove_link(&ERTS_P_LINKS(rp), port_id);
- if (rlnk) {
- int xres = erts_send_exit_signal(NULL,
- port_id,
- rp,
- &rp_locks,
- am_noproc,
- NIL,
- NULL,
- 0);
- if (xres >= 0) {
- /* We didn't exit the process and it is traced */
- if (IS_TRACED_FL(rp, F_TRACE_PROCS))
- trace_proc(NULL, 0, rp, am_getting_unlinked, port_id);
- }
- if (rp_locks)
- erts_proc_unlock(rp, rp_locks);
- }
- }
+ erts_proc_sig_send_link_exit(NULL, port_id, lnk, am_noproc, NIL);
}
static void
-port_link(Port *prt, erts_aint32_t state, Eterm to)
+port_link(Port *prt, erts_aint32_t state, ErtsLink *lnk)
{
- if (IS_TRACED_FL(prt, F_TRACE_PORTS))
- trace_port(prt, am_getting_linked, to);
- if (!(state & ERTS_PORT_SFLGS_INVALID_LOOKUP)) {
- erts_add_link(&ERTS_P_LINKS(prt), LINK_PID, to);
- } else {
- port_link_failure(prt->common.id, to);
- if (IS_TRACED_FL(prt, F_TRACE_PORTS))
- trace_port(prt, am_unlink, to);
+ if (state & ERTS_PORT_SFLGS_INVALID_LOOKUP)
+ port_link_failure(prt->common.id, lnk);
+ else {
+ ErtsLink *rlnk;
+ rlnk = erts_link_tree_insert_addr_replace(&ERTS_P_LINKS(prt),
+ lnk);
+ if (rlnk)
+ erts_link_release(rlnk);
+ else if (IS_TRACED_FL(prt, F_TRACE_PORTS))
+ trace_port(prt, am_getting_linked, lnk->other.item);
}
}
@@ -2600,17 +2566,16 @@ static int
port_sig_link(Port *prt, erts_aint32_t state, int op, ErtsProc2PortSigData *sigdp)
{
if (op == ERTS_PROC2PORT_SIG_EXEC)
- port_link(prt, state, sigdp->u.link.to);
- else {
- port_link_failure(sigdp->u.link.port, sigdp->u.link.to);
- }
+ port_link(prt, state, sigdp->u.link.lnk);
+ else
+ port_link_failure(sigdp->u.link.port_id, sigdp->u.link.lnk);
if (sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY)
port_sched_op_reply(sigdp->caller, sigdp->ref, am_true, prt);
return ERTS_PORT_REDS_LINK;
}
ErtsPortOpResult
-erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
+erts_port_link(Process *c_p, Port *prt, ErtsLink *lnk, Eterm *refp)
{
ErtsProc2PortSigData *sigdp;
ErtsTryImmDrvCallState try_call_state
@@ -2623,7 +2588,7 @@ erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
switch (try_imm_drv_call(&try_call_state)) {
case ERTS_TRY_IMM_DRV_CALL_OK:
- port_link(prt, try_call_state.state, to);
+ port_link(prt, try_call_state.state, lnk);
finalize_imm_drv_call(&try_call_state);
BUMP_REDS(c_p, ERTS_PORT_REDS_LINK);
return ERTS_PORT_OP_DONE;
@@ -2636,12 +2601,12 @@ erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
sigdp = erts_port_task_alloc_p2p_sig_data();
sigdp->flags = ERTS_P2P_SIG_TYPE_LINK;
- sigdp->u.link.port = prt->common.id;
- sigdp->u.link.to = to;
+ sigdp->u.link.port_id = prt->common.id;
+ sigdp->u.link.lnk = lnk;
return erts_schedule_proc2port_signal(c_p,
prt,
- c_p ? c_p->common.id : to,
+ c_p->common.id,
refp,
sigdp,
0,
@@ -2650,51 +2615,23 @@ erts_port_link(Process *c_p, Port *prt, Eterm to, Eterm *refp)
}
static void
-port_monitor_failure(Eterm port_id, Eterm origin, Eterm ref_DOWN)
+port_monitor_failure(Eterm port_id, ErtsMonitor *mon)
{
- Process *origin_p;
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_LINK;
- ASSERT(is_internal_pid(origin));
-
- origin_p = erts_pid2proc(NULL, 0, origin, p_locks);
- if (! origin_p) { return; }
-
- /* Send the DOWN message immediately. Ref is made on the fly because
- * caller has never seen it yet. */
- erts_queue_monitor_message(origin_p, &p_locks, ref_DOWN,
- am_port, port_id, am_noproc);
- erts_proc_unlock(origin_p, p_locks);
+ erts_proc_sig_send_monitor_down(mon, am_noproc);
}
/* Origin wants to monitor port Prt. State contains possible error, which has
* happened just before. Name is either NIL or an atom, if user monitors
* a port by name. Ref is premade reference that will be returned to user */
static void
-port_monitor(Port *prt, erts_aint32_t state, Eterm origin,
- Eterm name, Eterm ref)
+port_monitor(Port *prt, erts_aint32_t state, ErtsMonitor *mon)
{
- Eterm name_or_nil = is_atom(name) ? name : NIL;
-
- ASSERT(is_pid(origin));
- ASSERT(is_atom(name) || is_port(name) || name == NIL);
- ASSERT(is_internal_ordinary_ref(ref));
-
- if (!(state & ERTS_PORT_SFLGS_INVALID_LOOKUP)) {
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_LINK;
-
- Process *origin_p = erts_pid2proc(NULL, 0, origin, p_locks);
- if (! origin_p) {
- goto failure;
- }
- erts_add_monitor(&ERTS_P_MONITORS(origin_p), MON_ORIGIN, ref,
- prt->common.id, name_or_nil);
- erts_add_monitor(&ERTS_P_MONITORS(prt), MON_TARGET, ref,
- origin, name_or_nil);
-
- erts_proc_unlock(origin_p, p_locks);
- } else {
-failure:
- port_monitor_failure(prt->common.id, origin, ref);
+ ASSERT(prt);
+ if (state & ERTS_PORT_SFLGS_INVALID_LOOKUP)
+ port_monitor_failure(prt->common.id, mon);
+ else {
+ ASSERT(erts_monitor_is_target(mon));
+ erts_monitor_list_insert(&ERTS_P_LT_MONITORS(prt), mon);
}
}
@@ -2702,24 +2639,11 @@ static int
port_sig_monitor(Port *prt, erts_aint32_t state, int op,
ErtsProc2PortSigData *sigdp)
{
- Eterm hp[ERTS_REF_THING_SIZE];
- Eterm ref = make_internal_ref(&hp);
- write_ref_thing(hp, sigdp->ref[0], sigdp->ref[1], sigdp->ref[2]);
-
- if (op == ERTS_PROC2PORT_SIG_EXEC) {
- /* erts_add_monitor call inside port_monitor will copy ref from hp */
- port_monitor(prt, state,
- sigdp->u.monitor.origin,
- sigdp->u.monitor.name,
- ref);
- } else {
- port_monitor_failure(sigdp->u.monitor.name,
- sigdp->u.monitor.origin,
- ref);
- }
- if (sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY) {
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_true, prt);
- }
+ if (op == ERTS_PROC2PORT_SIG_EXEC)
+ port_monitor(prt, state, sigdp->u.monitor.mon);
+ else
+ port_monitor_failure(sigdp->u.monitor.port_id,
+ sigdp->u.monitor.mon);
return ERTS_PORT_REDS_MONITOR;
}
@@ -2727,95 +2651,63 @@ port_sig_monitor(Port *prt, erts_aint32_t state, int op,
* a reference (ref may be rewritten to be used to serve additionally as a
* signal id). Name is atom if user monitors port by name or NIL */
ErtsPortOpResult
-erts_port_monitor(Process *origin, Port *port, Eterm name, Eterm *refp)
+erts_port_monitor(Process *c_p, Port *port, ErtsMonitor *mon)
{
ErtsProc2PortSigData *sigdp;
ErtsTryImmDrvCallState try_call_state
= ERTS_INIT_TRY_IMM_DRV_CALL_STATE(
- origin, port, ERTS_PORT_SFLGS_INVALID_LOOKUP,
+ c_p,
+ port,
+ ERTS_PORT_SFLGS_INVALID_LOOKUP,
0,
- 0, /* trap_ref is always set so !trap_ref always is false */
+ !0,
am_monitor);
- ASSERT(origin);
+ ASSERT(c_p);
ASSERT(port);
- ASSERT(is_atom(name) || is_port(name));
- ASSERT(refp);
+ ASSERT(mon);
switch (try_imm_drv_call(&try_call_state)) {
case ERTS_TRY_IMM_DRV_CALL_OK:
- port_monitor(port, try_call_state.state, origin->common.id, name, *refp);
+ port_monitor(port, try_call_state.state, mon);
finalize_imm_drv_call(&try_call_state);
- BUMP_REDS(origin, ERTS_PORT_REDS_MONITOR);
+ BUMP_REDS(c_p, ERTS_PORT_REDS_MONITOR);
return ERTS_PORT_OP_DONE;
case ERTS_TRY_IMM_DRV_CALL_INVALID_PORT:
- return ERTS_PORT_OP_BADARG;
+ return ERTS_PORT_OP_DROPPED;
default:
break; /* Schedule call instead... */
}
sigdp = erts_port_task_alloc_p2p_sig_data();
sigdp->flags = ERTS_P2P_SIG_TYPE_MONITOR;
- sigdp->u.monitor.origin = origin->common.id;
- sigdp->u.monitor.name = name; /* either named monitor, or port id */
+ sigdp->u.monitor.port_id = port->common.id;
+ sigdp->u.monitor.mon = mon;
/* Ref contents will be initialized here */
- return erts_schedule_proc2port_signal(origin, port, origin->common.id,
- refp, sigdp, 0, NULL,
+ return erts_schedule_proc2port_signal(c_p,
+ port,
+ c_p->common.id,
+ NULL,
+ sigdp,
+ 0,
+ NULL,
port_sig_monitor);
}
-static void
-port_demonitor_failure(Eterm port_id, Eterm origin, Eterm ref)
-{
- Process *origin_p;
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK;
- ErtsMonitor *mon1;
- ASSERT(is_internal_pid(origin));
-
- origin_p = erts_pid2proc(NULL, 0, origin, rp_locks);
- if (! origin_p) { return; }
-
- /* do not send any DOWN messages, drop monitors on process */
- mon1 = erts_remove_monitor(&ERTS_P_MONITORS(origin_p), ref);
- if (mon1 != NULL) {
- erts_destroy_monitor(mon1);
- }
-
- erts_proc_unlock(origin_p, rp_locks);
-}
-
/* Origin wants to demonitor port Prt. State contains possible error, which has
* happened just before. Ref is reference to monitor */
static void
-port_demonitor(Port *port, erts_aint32_t state, Eterm origin, Eterm ref)
+port_demonitor(Port *port, erts_aint32_t state, ErtsMonitor *mon)
{
- ASSERT(port);
- ASSERT(is_pid(origin));
- ASSERT(is_internal_ref(ref));
-
- if (!(state & ERTS_PORT_SFLGS_INVALID_LOOKUP)) {
- ErtsProcLocks p_locks = ERTS_PROC_LOCK_LINK;
- Process *origin_p = erts_pid2proc(NULL, 0, origin, p_locks);
- if (origin_p) {
- ErtsMonitor *mon1 = erts_remove_monitor(&ERTS_P_MONITORS(origin_p),
- ref);
- if (mon1 != NULL) {
- erts_destroy_monitor(mon1);
- }
- }
- if (1) {
- ErtsMonitor *mon2 = erts_remove_monitor(&ERTS_P_MONITORS(port),
- ref);
- if (mon2 != NULL) {
- erts_destroy_monitor(mon2);
- }
- }
- if (origin_p) { /* when origin is dying, it won't be found */
- erts_proc_unlock(origin_p, p_locks);
- }
- } else {
- port_demonitor_failure(port->common.id, origin, ref);
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
+ ASSERT(port && mon);
+ ASSERT(erts_monitor_is_origin(mon));
+ if (!erts_monitor_is_in_table(&mdp->target))
+ erts_monitor_release(mon);
+ else {
+ erts_monitor_list_delete(&ERTS_P_LT_MONITORS(port), &mdp->target);
+ erts_monitor_release_both(mdp);
}
}
@@ -2823,73 +2715,47 @@ static int
port_sig_demonitor(Port *prt, erts_aint32_t state, int op,
ErtsProc2PortSigData *sigdp)
{
- Eterm hp[ERTS_REF_THING_SIZE];
- Eterm ref = make_internal_ref(&hp);
- write_ref_thing(hp, sigdp->u.demonitor.ref[0],
- sigdp->u.demonitor.ref[1],
- sigdp->u.demonitor.ref[2]);
- if (op == ERTS_PROC2PORT_SIG_EXEC) {
- port_demonitor(prt, state, sigdp->u.demonitor.origin, ref);
- } else {
- port_demonitor_failure(sigdp->u.demonitor.name,
- sigdp->u.demonitor.origin,
- ref);
- }
- if (sigdp->flags & ERTS_P2P_SIG_DATA_FLG_REPLY) {
- port_sched_op_reply(sigdp->caller, sigdp->ref, am_true, prt);
- }
+ if (op == ERTS_PROC2PORT_SIG_EXEC)
+ port_demonitor(prt, state, sigdp->u.demonitor.mon);
+ else
+ erts_monitor_release(sigdp->u.demonitor.mon);
return ERTS_PORT_REDS_DEMONITOR;
}
-/* Removes monitor between origin and target, identified by ref.
- * Mode defines normal or relaxed demonitor rules (process is at death) */
-ErtsPortOpResult erts_port_demonitor(Process *origin, ErtsDemonitorMode mode,
- Port *target, Eterm ref,
- Eterm *trap_ref)
+ErtsPortOpResult
+erts_port_demonitor(Process *c_p, Port *prt, ErtsMonitor *mon)
{
- Process *c_p = mode == ERTS_PORT_DEMONITOR_NORMAL ? origin : NULL;
ErtsProc2PortSigData *sigdp;
ErtsTryImmDrvCallState try_call_state
= ERTS_INIT_TRY_IMM_DRV_CALL_STATE(
c_p,
- target, ERTS_PORT_SFLGS_INVALID_LOOKUP,
+ prt, ERTS_PORT_SFLGS_INVALID_LOOKUP,
0,
- !trap_ref,
+ !0,
am_demonitor);
- ASSERT(origin);
- ASSERT(target);
- ASSERT(is_internal_ref(ref));
+ ASSERT(c_p && prt && mon);
switch (try_imm_drv_call(&try_call_state)) {
case ERTS_TRY_IMM_DRV_CALL_OK:
- port_demonitor(target, try_call_state.state, origin->common.id, ref);
+ port_demonitor(prt, try_call_state.state, mon);
finalize_imm_drv_call(&try_call_state);
- if (mode == ERTS_PORT_DEMONITOR_NORMAL) {
- BUMP_REDS(origin, ERTS_PORT_REDS_DEMONITOR);
- }
+ BUMP_REDS(c_p, ERTS_PORT_REDS_DEMONITOR);
return ERTS_PORT_OP_DONE;
case ERTS_TRY_IMM_DRV_CALL_INVALID_PORT:
- return ERTS_PORT_OP_BADARG;
+ return ERTS_PORT_OP_DROPPED;
default:
break; /* Schedule call instead... */
}
sigdp = erts_port_task_alloc_p2p_sig_data();
sigdp->flags = ERTS_P2P_SIG_TYPE_DEMONITOR;
- sigdp->u.demonitor.origin = origin->common.id;
- sigdp->u.demonitor.name = target->common.id;
- {
- Uint32 *nums = internal_ref_numbers(ref);
- /* Start from 1 skip ref arity */
- sys_memcpy(sigdp->u.demonitor.ref,
- nums,
- sizeof(sigdp->u.demonitor.ref));
- }
+ sigdp->u.demonitor.port_id = prt->common.id;
+ sigdp->u.demonitor.mon = mon;
/* Ref contents will be initialized here */
- return erts_schedule_proc2port_signal(c_p, target, origin->common.id,
- trap_ref, sigdp, 0, NULL,
+ return erts_schedule_proc2port_signal(c_p, prt, c_p->common.id,
+ NULL, sigdp, 0, NULL,
port_sig_demonitor);
}
@@ -2898,11 +2764,13 @@ init_ack_send_reply(Port *port, Eterm resp)
{
if (!is_internal_port(resp)) {
- Process *rp = erts_proc_lookup_raw(port->async_open_port->to);
- erts_proc_lock(rp, ERTS_PROC_LOCK_LINK);
- erts_remove_link(&ERTS_P_LINKS(port), port->async_open_port->to);
- erts_remove_link(&ERTS_P_LINKS(rp), port->common.id);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
+ Eterm proc = port->async_open_port->to;
+ ErtsLink *lnk = erts_link_tree_lookup(ERTS_P_LINKS(port),
+ proc);
+ if (lnk) {
+ erts_link_tree_delete(&ERTS_P_LINKS(port), lnk);
+ erts_proc_sig_send_unlink(NULL, lnk);
+ }
}
port_sched_op_reply(port->async_open_port->to,
port->async_open_port->ref,
@@ -3680,6 +3548,7 @@ terminate_port(Port *prt)
ASSERT(!ERTS_P_LINKS(prt));
ASSERT(!ERTS_P_MONITORS(prt));
+ ASSERT(!ERTS_P_LT_MONITORS(prt));
/* state may be altered by kill_port() below */
state = erts_atomic32_read_band_nob(&prt->state,
@@ -3767,146 +3636,25 @@ erts_terminate_port(Port *pp)
terminate_port(pp);
}
-static void port_fire_one_monitor(ErtsMonitor *mon, void *ctx0);
-static void sweep_one_monitor(ErtsMonitor *mon, void *vpsc)
-{
- switch (mon->type) {
- case MON_ORIGIN: {
- ErtsMonitor *rmon;
- Process *rp;
-
- ASSERT(is_internal_pid(mon->u.pid));
- rp = erts_pid2proc(NULL, 0, mon->u.pid, ERTS_PROC_LOCK_LINK);
- if (!rp) {
- goto done;
- }
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), mon->ref);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (rmon == NULL) {
- goto done;
- }
- erts_destroy_monitor(rmon);
- } break;
- case MON_TARGET: {
- port_fire_one_monitor(mon, vpsc); /* forward call */
- } break;
- }
- done:
- erts_destroy_monitor(mon);
-}
-
-
-
typedef struct {
- Port *port;
+ Eterm port_id;
Eterm reason;
-} SweepContext;
+} ErtsPortExitContext;
-static void sweep_one_link(ErtsLink *lnk, void *vpsc)
+static void link_port_exit(ErtsLink *lnk, void *vpectxt)
{
- SweepContext *psc = vpsc;
- DistEntry *dep;
- Process *rp;
- Eterm port_id = psc->port->common.id;
-
- ASSERT(lnk->type == LINK_PID);
-
- if (IS_TRACED_FL(psc->port, F_TRACE_PORTS))
- trace_port(psc->port, am_unlink, lnk->pid);
-
- if (is_external_pid(lnk->pid)) {
- dep = external_pid_dist_entry(lnk->pid);
- if(dep != erts_this_dist_entry) {
- ErtsDistLinkData dld;
- ErtsDSigData dsd;
- int code;
- code = erts_dsig_prepare(&dsd, dep, NULL, 0, ERTS_DSP_NO_LOCK, 0, 0);
- switch (code) {
- case ERTS_DSIG_PREP_NOT_ALIVE:
- case ERTS_DSIG_PREP_NOT_CONNECTED:
- break;
- case ERTS_DSIG_PREP_PENDING:
- case ERTS_DSIG_PREP_CONNECTED:
- erts_remove_dist_link(&dld, port_id, lnk->pid, dep);
- erts_destroy_dist_link(&dld);
- code = erts_dsig_send_exit(&dsd, port_id, lnk->pid,
- psc->reason);
- ASSERT(code == ERTS_DSIG_SEND_OK);
- break;
- default:
- ASSERT(! "Invalid dsig prepare result");
- break;
- }
- }
- } else {
- ErtsProcLocks rp_locks = ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCKS_XSIG_SEND;
- ASSERT(is_internal_pid(lnk->pid));
- rp = erts_pid2proc(NULL, 0, lnk->pid, rp_locks);
- if (rp) {
- ErtsLink *rlnk = erts_remove_link(&ERTS_P_LINKS(rp), port_id);
-
- if (rlnk) {
- int xres = erts_send_exit_signal(NULL,
- port_id,
- rp,
- &rp_locks,
- psc->reason,
- NIL,
- NULL,
- 0);
- if (xres >= 0) {
- if (rp_locks & ERTS_PROC_LOCKS_XSIG_SEND) {
- erts_proc_unlock(rp, ERTS_PROC_LOCKS_XSIG_SEND);
- rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND;
- }
- /* We didn't exit the process and it is traced */
- if (IS_TRACED_FL(rp, F_TRACE_PROCS))
- trace_proc(NULL, 0, rp, am_getting_unlinked, port_id);
- }
- erts_destroy_link(rlnk);
- }
-
- erts_proc_unlock(rp, rp_locks);
- }
- }
- erts_destroy_link(lnk);
+ ErtsPortExitContext *pectxt = vpectxt;
+ erts_proc_sig_send_link_exit(NULL, pectxt->port_id,
+ lnk, pectxt->reason, NIL);
}
-static void
-port_fire_one_monitor(ErtsMonitor *mon, void *ctx0)
+static void monitor_port_exit(ErtsMonitor *mon, void *vpectxt)
{
- Process *origin;
- ErtsProcLocks origin_locks;
-
- if (mon->type != MON_TARGET || ! is_pid(mon->u.pid)) {
- return;
- }
- /*
- * Proceed here if someone monitors us, we (port) are the target and
- * origin is some process
- */
- origin_locks = ERTS_PROC_LOCKS_MSG_SEND | ERTS_PROC_LOCK_LINK;
-
- origin = erts_pid2proc(NULL, 0, mon->u.pid, origin_locks);
- if (origin) {
- DeclareTmpHeapNoproc(lhp,3);
- SweepContext *ctx = (SweepContext *)ctx0;
- ErtsMonitor *rmon;
- Eterm watched = (is_atom(mon->name)
- ? TUPLE2(lhp, mon->name, erts_this_dist_entry->sysname)
- : ctx->port->common.id);
-
- erts_queue_monitor_message(origin, &origin_locks, mon->ref, am_port,
- watched, ctx->reason);
- UnUseTmpHeapNoproc(3);
-
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(origin), mon->ref);
- erts_proc_unlock(origin, origin_locks);
-
- if (rmon) {
- erts_destroy_monitor(rmon);
- }
- }
+ ErtsPortExitContext *pectxt = vpectxt;
+ if (erts_monitor_is_target(mon))
+ erts_proc_sig_send_monitor_down(mon, pectxt->reason);
+ else
+ erts_proc_sig_send_demonitor(mon);
}
/* 'from' is sending 'this_port' an exit signal, (this_port must be internal).
@@ -3923,9 +3671,12 @@ int
erts_deliver_port_exit(Port *prt, Eterm from, Eterm reason, int send_closed,
int drop_normal)
{
- ErtsLink *lnk;
+ ErtsLink *links;
+ ErtsMonitor *monitors;
+ ErtsMonitor *lt_monitors;
Eterm modified_reason;
erts_aint32_t state, set_state_flags;
+ ErtsPortExitContext pectxt;
ERTS_CHK_NO_PROC_LOCKS;
ERTS_LC_ASSERT(erts_lc_is_port_locked(prt));
@@ -3973,23 +3724,36 @@ erts_deliver_port_exit(Port *prt, Eterm from, Eterm reason, int send_closed,
set_busy_port(ERTS_Port2ErlDrvPort(prt), 0);
+ links = ERTS_P_LINKS(prt);
+ ERTS_P_LINKS(prt) = NULL;
+ monitors = ERTS_P_MONITORS(prt);
+ ERTS_P_MONITORS(prt) = NULL;
+ lt_monitors = ERTS_P_LT_MONITORS(prt);
+ ERTS_P_LT_MONITORS(prt) = NULL;
+
if (prt->common.u.alive.reg != NULL)
(void) erts_unregister_name(NULL, 0, prt, prt->common.u.alive.reg->name);
- {
- SweepContext sc = {prt, modified_reason};
- lnk = ERTS_P_LINKS(prt);
- ERTS_P_LINKS(prt) = NULL;
- erts_sweep_links(lnk, &sweep_one_link, &sc);
+ pectxt.port_id = prt->common.id;
+ pectxt.reason = modified_reason;
+
+ if (links)
+ erts_monitor_tree_foreach_delete(&links,
+ link_port_exit,
+ (void *) &pectxt);
+
+ if (monitors || lt_monitors) {
+ DRV_MONITOR_LOCK_PDL(prt);
+ if (monitors)
+ erts_monitor_tree_foreach_delete(&monitors,
+ monitor_port_exit,
+ (void *) &pectxt);
+ if (lt_monitors)
+ erts_monitor_list_foreach_delete(&lt_monitors,
+ monitor_port_exit,
+ (void *) &pectxt);
+ DRV_MONITOR_UNLOCK_PDL(prt);
}
- DRV_MONITOR_LOCK_PDL(prt);
- {
- SweepContext ctx = {prt, modified_reason};
- ErtsMonitor *moni = ERTS_P_MONITORS(prt);
- ERTS_P_MONITORS(prt) = NULL;
- erts_sweep_monitors(moni, &sweep_one_monitor, &ctx);
- }
- DRV_MONITOR_UNLOCK_PDL(prt);
if ((state & ERTS_PORT_SFLG_DISTRIBUTION) && prt->dist_entry) {
erts_do_net_exits(prt->dist_entry, modified_reason);
@@ -5069,14 +4833,18 @@ typedef struct {
static void prt_one_monitor(ErtsMonitor *mon, void *vprtd)
{
+ ErtsMonitorData *mdp = erts_monitor_to_data(mon);
prt_one_lnk_data *prtd = (prt_one_lnk_data *) vprtd;
- erts_print(prtd->to, prtd->arg, "(%T,%T)", mon->u.pid, mon->ref);
+ if (mon->type == ERTS_MON_TYPE_RESOURCE && erts_monitor_is_target(mon))
+ erts_print(prtd->to, prtd->arg, "(%p,%T)", mon->other.ptr, mdp->ref);
+ else
+ erts_print(prtd->to, prtd->arg, "(%T,%T)", mon->other.item, mdp->ref);
}
static void prt_one_lnk(ErtsLink *lnk, void *vprtd)
{
prt_one_lnk_data *prtd = (prt_one_lnk_data *) vprtd;
- erts_print(prtd->to, prtd->arg, "%T", lnk->pid);
+ erts_print(prtd->to, prtd->arg, "%T", lnk->other.item);
}
static void dump_port_state(fmtfn_t to, void *arg, erts_aint32_t state)
@@ -5188,15 +4956,18 @@ print_port_info(Port *p, fmtfn_t to, void *arg)
prtd.to = to;
prtd.arg = arg;
erts_print(to, arg, "Links: ");
- erts_doforall_links(ERTS_P_LINKS(p), &prt_one_lnk, &prtd);
+ erts_link_tree_foreach(ERTS_P_LINKS(p), prt_one_lnk, (void *) &prtd);
erts_print(to, arg, "\n");
}
- if (ERTS_P_MONITORS(p)) {
+ if (ERTS_P_MONITORS(p) || ERTS_P_LT_MONITORS(p)) {
prt_one_lnk_data prtd;
prtd.to = to;
prtd.arg = arg;
erts_print(to, arg, "Monitors: ");
- erts_doforall_monitors(ERTS_P_MONITORS(p), &prt_one_monitor, &prtd);
+ erts_monitor_tree_foreach(ERTS_P_MONITORS(p), prt_one_monitor,
+ (void *) &prtd);
+ erts_monitor_list_foreach(ERTS_P_LT_MONITORS(p), prt_one_monitor,
+ (void *) &prtd);
erts_print(to, arg, "\n");
}
if (p->suspended) {
@@ -7033,24 +6804,23 @@ static int do_driver_monitor_process(Port *prt,
ErlDrvMonitor *monitor)
{
Eterm buf[ERTS_REF_THING_SIZE];
- Process *rp;
Eterm ref;
+ ErtsMonitorData *mdp;
- if (prt->drv_ptr->process_exit == NULL) {
+ if (!prt->drv_ptr->process_exit)
return -1;
- }
- rp = erts_pid2proc_opt(NULL, 0,
- (Eterm) process, ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- if (!rp) {
- return 1;
- }
ref = erts_make_ref_in_buffer(buf);
- erts_add_monitor(&ERTS_P_MONITORS(prt), MON_ORIGIN, ref, rp->common.id, NIL);
- erts_add_monitor(&ERTS_P_MONITORS(rp), MON_TARGET, ref, prt->common.id, NIL);
+ mdp = erts_monitor_create(ERTS_MON_TYPE_PORT, ref,
+ prt->common.id, process, NIL);
+
+ if (!erts_proc_sig_send_monitor(&mdp->target, process)) {
+ erts_monitor_release_both(mdp);
+ return 1;
+ }
+
+ erts_monitor_tree_insert(&ERTS_P_MONITORS(prt), &mdp->origin);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
erts_ref_to_driver_monitor(ref,monitor);
return 0;
}
@@ -7083,37 +6853,17 @@ int driver_monitor_process(ErlDrvPort drvport,
static int do_driver_demonitor_process(Port *prt, const ErlDrvMonitor *monitor)
{
Eterm heap[ERTS_REF_THING_SIZE];
- Process *rp;
Eterm ref;
ErtsMonitor *mon;
- Eterm to;
ref = erts_driver_monitor_to_ref(heap, monitor);
- mon = erts_lookup_monitor(ERTS_P_MONITORS(prt), ref);
- if (mon == NULL) {
- return 1;
- }
- ASSERT(mon->type == MON_ORIGIN);
- to = mon->u.pid;
- ASSERT(is_internal_pid(to));
- rp = erts_pid2proc_opt(NULL,
- 0,
- to,
- ERTS_PROC_LOCK_LINK,
- ERTS_P2P_FLG_ALLOW_OTHER_X);
- mon = erts_remove_monitor(&ERTS_P_MONITORS(prt), ref);
- if (mon) {
- erts_destroy_monitor(mon);
- }
- if (rp) {
- ErtsMonitor *rmon;
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(rp), ref);
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
- if (rmon != NULL) {
- erts_destroy_monitor(rmon);
- }
- }
+ mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(prt), ref);
+ if (!mon || !erts_monitor_is_origin(mon))
+ return 1;
+
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(prt), mon);
+ erts_proc_sig_send_demonitor(mon);
return 0;
}
@@ -7142,19 +6892,16 @@ static ErlDrvTermData do_driver_get_monitored_process(Port *prt,const ErlDrvMoni
{
Eterm ref;
ErtsMonitor *mon;
- Eterm to;
Eterm heap[ERTS_REF_THING_SIZE];
ref = erts_driver_monitor_to_ref(heap, monitor);
- mon = erts_lookup_monitor(ERTS_P_MONITORS(prt), ref);
- if (mon == NULL) {
+ mon = erts_monitor_tree_lookup(ERTS_P_MONITORS(prt), ref);
+ if (!mon || !erts_monitor_is_origin(mon))
return driver_term_nil;
- }
- ASSERT(mon->type == MON_ORIGIN);
- to = mon->u.pid;
- ASSERT(is_internal_pid(to));
- return (ErlDrvTermData) to;
+
+ ASSERT(is_internal_pid(mon->other.item));
+ return (ErlDrvTermData) mon->other.item;
}
@@ -7186,24 +6933,27 @@ int driver_compare_monitors(const ErlDrvMonitor *monitor1,
ERTS_REF_THING_SIZE*sizeof(Eterm));
}
-void erts_fire_port_monitor(Port *prt, Eterm ref)
+void erts_fire_port_monitor(Port *prt, ErtsMonitor *tmon)
{
- ErtsMonitor *rmon;
+ ErtsMonitorData *mdp;
void (*callback)(ErlDrvData drv_data, ErlDrvMonitor *monitor);
ErlDrvMonitor drv_monitor;
int fpe_was_unmasked;
ERTS_MSACC_PUSH_STATE_M();
ERTS_LC_ASSERT(erts_lc_is_port_locked(prt));
- ASSERT(prt->drv_ptr != NULL);
+ ASSERT(prt->drv_ptr != NULL);
+ ASSERT(erts_monitor_is_target(tmon));
+ mdp = erts_monitor_to_data(tmon);
DRV_MONITOR_LOCK_PDL(prt);
- if (erts_lookup_monitor(ERTS_P_MONITORS(prt), ref) == NULL) {
+ if (!erts_monitor_is_in_table(&mdp->origin)) {
DRV_MONITOR_UNLOCK_PDL(prt);
+ erts_monitor_release(tmon);
return;
}
callback = prt->drv_ptr->process_exit;
ASSERT(callback != NULL);
- erts_ref_to_driver_monitor(ref,&drv_monitor);
+ erts_ref_to_driver_monitor(mdp->ref,&drv_monitor);
ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_PORT);
DRV_MONITOR_UNLOCK_PDL(prt);
#ifdef USE_VM_PROBES
@@ -7227,11 +6977,9 @@ void erts_fire_port_monitor(Port *prt, Eterm ref)
DRV_MONITOR_LOCK_PDL(prt);
ERTS_MSACC_POP_STATE_M();
/* remove monitor *after* callback */
- rmon = erts_remove_monitor(&ERTS_P_MONITORS(prt), ref);
+ erts_monitor_tree_delete(&ERTS_P_MONITORS(prt), &mdp->origin);
DRV_MONITOR_UNLOCK_PDL(prt);
- if (rmon) {
- erts_destroy_monitor(rmon);
- }
+ erts_monitor_release_both(mdp);
}
@@ -7276,8 +7024,7 @@ driver_failure_term(ErlDrvPort ix, Eterm term, int eof)
int driver_exit(ErlDrvPort ix, int err)
{
Port* prt = erts_drvport2port(ix);
- Process* rp;
- ErtsLink *lnk, *rlnk = NULL;
+ ErtsLink *lnk;
Eterm connected;
ERTS_CHK_NO_PROC_LOCKS;
@@ -7286,22 +7033,10 @@ int driver_exit(ErlDrvPort ix, int err)
return -1;
connected = ERTS_PORT_GET_CONNECTED(prt);
- rp = erts_pid2proc(NULL, 0, connected, ERTS_PROC_LOCK_LINK);
- if (rp) {
- rlnk = erts_remove_link(&ERTS_P_LINKS(rp),prt->common.id);
- }
-
- lnk = erts_remove_link(&ERTS_P_LINKS(prt), connected);
-
- if (rp)
- erts_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
-
- if (rlnk != NULL) {
- erts_destroy_link(rlnk);
- }
-
- if (lnk != NULL) {
- erts_destroy_link(lnk);
+ lnk = erts_link_tree_lookup(ERTS_P_LINKS(prt), connected);
+ if (lnk) {
+ erts_link_tree_delete(&ERTS_P_LINKS(prt), lnk);
+ erts_proc_sig_send_unlink(NULL, lnk);
}
if (err == 0)
diff --git a/erts/emulator/beam/msg_instrs.tab b/erts/emulator/beam/msg_instrs.tab
index d6d4d2fb49..88d2ef9fa3 100644
--- a/erts/emulator/beam/msg_instrs.tab
+++ b/erts/emulator/beam/msg_instrs.tab
@@ -2,7 +2,7 @@
//
// %CopyrightBegin%
//
-// Copyright Ericsson AB 2017. All Rights Reserved.
+// Copyright Ericsson AB 2017-2018. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
@@ -45,23 +45,16 @@
i_recv_mark() {
/*
- * Save the current position in message buffer.
+ * Save the current end of message queue
*/
- c_p->msg.saved_last = c_p->msg.last;
+ ERTS_RECV_MARK_SAVE(c_p);
}
i_recv_set() {
/*
- * If c_p->msg.saved_last is non-zero, it points to the first
- * message that could possibly be matched out.
- *
- * If c_p->msg.saved_last is zero, it means that it was invalidated
- * because another receive was executed before this i_recv_set()
- * instruction was reached.
+ * If previously saved recv mark, set peek position to it
*/
- if (c_p->msg.saved_last) {
- c_p->msg.save = c_p->msg.saved_last;
- }
+ ERTS_RECV_MARK_SET(c_p);
SET_I($NEXT_INSTRUCTION);
goto loop_rec_top__;
//| -no_next
@@ -79,7 +72,6 @@ i_loop_rec(Dest) {
/* Entry point from recv_set */
loop_rec_top__:
- ;
/*
* We need to disable GC while matching messages
@@ -89,34 +81,59 @@ i_loop_rec(Dest) {
ASSERT(!(c_p->flags & F_DELAY_GC));
c_p->flags |= F_DELAY_GC;
- /* Entry point from loop_rec_end */
+ /* Entry point from loop_rec_end (and locally) */
loop_rec__:
+ if (FCALLS <= 0 && FCALLS <= neg_o_reds) {
+ $SET_CP_I_ABS(I);
+ c_p->flags &= ~F_DELAY_GC;
+ SWAPOUT;
+ c_p->arity = 0;
+ c_p->current = NULL;
+ goto do_schedule;
+ }
+
+ ASSERT(!ERTS_PROC_IS_EXITING(c_p));
+
PROCESS_MAIN_CHK_LOCKS(c_p);
msgp = PEEK_MESSAGE(c_p);
- if (!msgp) {
- erts_proc_lock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- /* Make sure messages wont pass exit signals... */
- if (ERTS_PROC_PENDING_EXIT(c_p)) {
- erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- SWAPOUT;
- c_p->flags &= ~F_DELAY_GC;
- c_p->arity = 0;
- goto do_schedule; /* Will be rescheduled for exit */
- }
- ERTS_MSGQ_MV_INQ2PRIVQ(c_p);
- msgp = PEEK_MESSAGE(c_p);
- if (msgp) {
- erts_proc_unlock(c_p, ERTS_PROC_LOCKS_MSG_RECEIVE);
- } else {
+ if (ERTS_UNLIKELY(msgp == NULL)) {
+ int get_out;
+ SWAPOUT;
+ FCALLS -= erts_proc_sig_receive_helper(c_p, FCALLS, neg_o_reds,
+ &msgp, &get_out);
+ SWAPIN;
+ if (ERTS_UNLIKELY(msgp == NULL)) {
+ if (get_out) {
+ if (get_out < 0) {
+ ASSERT(FCALLS <= 0 && FCALLS <= neg_o_reds);
+ goto loop_rec__; /* yield */
+ }
+ else {
+ ASSERT(ERTS_PROC_IS_EXITING(c_p));
+ goto do_schedule; /* exit */
+ }
+ }
+
+ /*
+ * If there are no more messages in queue
+ * (and we are not yielding or exiting)
+ * erts_proc_sig_receive_helper()
+ * returns with message queue lock locked...
+ */
c_p->flags &= ~F_DELAY_GC;
$SET_I_REL($Dest);
Goto(*I); /* Jump to a wait or wait_timeout instruction */
}
}
- if (is_non_value(ERL_MESSAGE_TERM(msgp))) {
+
+ ASSERT(msgp == PEEK_MESSAGE(c_p));
+ ASSERT(msgp && ERTS_SIG_IS_MSG(msgp));
+
+ if (ERTS_UNLIKELY(ERTS_SIG_IS_EXTERNAL_MSG(msgp))) {
+ FCALLS -= 10; /* FIXME: bump appropriate amount... */
SWAPOUT; /* erts_decode_dist_message() may write to heap... */
if (!erts_decode_dist_message(c_p, ERTS_PROC_LOCK_MAIN, msgp, 0)) {
/*
@@ -127,13 +144,16 @@ i_loop_rec(Dest) {
ASSERT(HTOP == c_p->htop && E == c_p->stop);
/* TODO: Add DTrace probe for this bad message situation? */
UNLINK_MESSAGE(c_p, msgp);
- c_p->msg.saved_last = 0; /* Better safe than sorry. */
msgp->next = NULL;
erts_cleanup_messages(msgp);
goto loop_rec__;
}
SWAPIN;
}
+
+ ASSERT(msgp == PEEK_MESSAGE(c_p));
+ ASSERT(ERTS_SIG_IS_INTERNAL_MSG(msgp));
+
r(0) = ERL_MESSAGE_TERM(msgp);
}
@@ -252,17 +272,8 @@ loop_rec_end(Dest) {
$SET_I_REL($Dest);
SAVE_MESSAGE(c_p);
- if (FCALLS > 0 || FCALLS > neg_o_reds) {
- FCALLS--;
- goto loop_rec__;
- }
-
- c_p->flags &= ~F_DELAY_GC;
- $SET_CP_I_ABS(I);
- SWAPOUT;
- c_p->arity = 0;
- c_p->current = NULL;
- goto do_schedule;
+ FCALLS--;
+ goto loop_rec__;
}
timeout_locked() {