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authorRickard Green <[email protected]>2017-08-01 18:34:58 +0200
committerRickard Green <[email protected]>2017-08-28 14:43:33 +0200
commitffd59fbd9ac262b7aba4b86e7da4992a3e668e24 (patch)
tree7e26dd7d2d02264d4fe2e8860eff3d1546d18b08 /erts/emulator/beam
parent4dcb2ae7810a507b701a30072b2f514cab7ebbdb (diff)
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Introduce sender in distributed signals and dflag configuration
Diffstat (limited to 'erts/emulator/beam')
-rw-r--r--erts/emulator/beam/bif.c1
-rw-r--r--erts/emulator/beam/dist.c72
-rw-r--r--erts/emulator/beam/dist.h5
3 files changed, 59 insertions, 19 deletions
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c
index b1f915b133..53b48ba6e1 100644
--- a/erts/emulator/beam/bif.c
+++ b/erts/emulator/beam/bif.c
@@ -2035,6 +2035,7 @@ static Sint remote_send(Process *p, DistEntry *dep,
ASSERT(is_atom(to) || is_external_pid(to));
+ ctx->dep = dep;
code = erts_dsig_prepare(&ctx->dsd, dep, p, ERTS_DSP_NO_LOCK, !ctx->suspend);
switch (code) {
case ERTS_DSIG_PREP_NOT_ALIVE:
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index d5c39485d0..a50072fe98 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -953,11 +953,30 @@ erts_dsig_send_msg(Eterm remote, Eterm message, ErtsSendContext* ctx)
}
#endif
- if (token != NIL)
- ctl = TUPLE4(&ctx->ctl_heap[0],
- make_small(DOP_SEND_TT), am_Empty, remote, token);
- else
- ctl = TUPLE3(&ctx->ctl_heap[0], make_small(DOP_SEND), am_Empty, remote);
+ if (token != NIL) {
+ Eterm el1, el2;
+ if (ctx->dep->flags & DFLAG_SEND_SENDER) {
+ el1 = make_small(DOP_SEND_SENDER_TT);
+ el2 = sender->common.id;
+ }
+ else {
+ el1 = make_small(DOP_SEND_TT);
+ el2 = am_Empty;
+ }
+ ctl = TUPLE4(&ctx->ctl_heap[0], el1, el2, remote, token);
+ }
+ else {
+ Eterm el1, el2;
+ if (ctx->dep->flags & DFLAG_SEND_SENDER) {
+ el1 = make_small(DOP_SEND_SENDER);
+ el2 = sender->common.id;
+ }
+ else {
+ el1 = make_small(DOP_SEND);
+ el2 = am_Empty;
+ }
+ ctl = TUPLE3(&ctx->ctl_heap[0], el1, el2, remote);
+ }
DTRACE6(message_send, sender_name, receiver_name,
msize, tok_label, tok_lastcnt, tok_serial);
DTRACE7(message_send_remote, sender_name, node_name, receiver_name,
@@ -1292,6 +1311,7 @@ int erts_net_message(Port *prt,
}
token_size = 0;
+ token = NIL;
switch (type = unsigned_val(tuple[1])) {
case DOP_LINK:
@@ -1521,38 +1541,52 @@ int erts_net_message(Port *prt,
}
break;
+ case DOP_SEND_SENDER_TT: {
+ Uint xsize;
case DOP_SEND_TT:
+
if (tuple_arity != 4) {
goto invalid_message;
}
-
- token_size = size_object(tuple[4]);
- /* Fall through ... */
+
+ token = tuple[4];
+ token_size = size_object(token);
+ xsize = ERTS_HEAP_FRAG_SIZE(token_size);
+ goto send_common;
+
+ case DOP_SEND_SENDER:
case DOP_SEND:
+
+ token = NIL;
+ xsize = 0;
+ if (tuple_arity != 3)
+ goto invalid_message;
+
+ send_common:
+
/*
- * There is intentionally no testing of the cookie (it is always '')
- * from R9B and onwards.
+ * If DOP_SEND_SENDER or DOP_SEND_SENDER_TT element 2 contains
+ * the sender pid (i.e. DFLAG_SEND_SENDER is set); otherwise,
+ * the atom '' (empty cookie).
*/
+ ASSERT((type == DOP_SEND_SENDER || type == DOP_SEND_SENDER_TT)
+ ? (is_pid(tuple[2]) && (dep->flags & DFLAG_SEND_SENDER))
+ : tuple[2] == am_Empty);
+
#ifdef ERTS_DIST_MSG_DBG
dist_msg_dbg(&ede, "MSG", buf, orig_len);
#endif
- if (type != DOP_SEND_TT && tuple_arity != 3) {
- goto invalid_message;
- }
to = tuple[3];
if (is_not_pid(to)) {
goto invalid_message;
}
rp = erts_proc_lookup(to);
if (rp) {
- Uint xsize = type == DOP_SEND ? 0 : ERTS_HEAP_FRAG_SIZE(token_size);
ErtsProcLocks locks = 0;
ErtsDistExternal *ede_copy;
ede_copy = erts_make_dist_ext_copy(&ede, xsize);
- if (type == DOP_SEND) {
- token = NIL;
- } else {
+ if (is_not_nil(token)) {
ErlHeapFragment *heap_frag;
ErlOffHeap *ohp;
ASSERT(xsize);
@@ -1560,15 +1594,15 @@ int erts_net_message(Port *prt,
ERTS_INIT_HEAP_FRAG(heap_frag, token_size, token_size);
hp = heap_frag->mem;
ohp = &heap_frag->off_heap;
- token = tuple[4];
token = copy_struct(token, token_size, &hp, ohp);
}
- erts_queue_dist_message(rp, locks, ede_copy, token, tuple[2]);
+ erts_queue_dist_message(rp, locks, ede_copy, token, am_Empty);
if (locks)
erts_smp_proc_unlock(rp, locks);
}
break;
+ }
case DOP_MONITOR_P_EXIT: {
/* We are monitoring a process on the remote node which dies, we get
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index dcd5846ca5..06c13a9f2b 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -44,6 +44,7 @@
#define DFLAG_UTF8_ATOMS 0x10000
#define DFLAG_MAP_TAG 0x20000
#define DFLAG_BIG_CREATION 0x40000
+#define DFLAG_SEND_SENDER 0x80000
/* All flags that should be enabled when term_to_binary/1 is used. */
#define TERM_TO_BINARY_DFLAGS (DFLAG_EXTENDED_REFERENCES \
@@ -74,6 +75,9 @@
#define DOP_DEMONITOR_P 20
#define DOP_MONITOR_P_EXIT 21
+#define DOP_SEND_SENDER 22
+#define DOP_SEND_SENDER_TT 23
+
/* distribution trap functions */
extern Export* dsend2_trap;
extern Export* dsend3_trap;
@@ -346,6 +350,7 @@ typedef struct {
Eterm ctl_heap[6];
ErtsDSigData dsd;
DistEntry* dep_to_deref;
+ DistEntry *dep;
struct erts_dsig_send_context dss;
Eterm return_term;