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-rw-r--r--erts/emulator/beam/dist.c274
1 files changed, 208 insertions, 66 deletions
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index bc168fc58d..0fa399cf53 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -103,8 +103,6 @@ dist_msg_dbg(ErtsDistExternal *edep, char *what, byte *buf, int sz)
-#define PASS_THROUGH 'p' /* This code should go */
-
int erts_is_alive; /* System must be blocked on change */
int erts_dist_buf_busy_limit;
@@ -684,31 +682,11 @@ size_obuf(ErtsDistOutputBuf *obuf)
return bin->orig_size;
}
-static void clear_dist_entry(DistEntry *dep)
+static ErtsDistOutputBuf* clear_de_out_queues(DistEntry* dep)
{
- Sint obufsize = 0;
- ErtsAtomCache *cache;
- ErtsProcList *suspendees;
ErtsDistOutputBuf *obuf;
- erts_de_rwlock(dep);
- erts_atomic_set_nob(&dep->input_handler,
- (erts_aint_t) NIL);
- 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);
- erts_atomic64_set_nob(&dep->out, 0);
+ ERTS_LC_ASSERT(erts_lc_mtx_is_locked(&dep->qlock));
if (!dep->out_queue.last)
obuf = dep->finalized_out_queue.first;
@@ -728,17 +706,12 @@ static void clear_dist_entry(DistEntry *dep)
dep->tmp_out_queue.last = NULL;
dep->finalized_out_queue.first = NULL;
dep->finalized_out_queue.last = NULL;
- dep->status = 0;
- suspendees = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
-
- erts_mtx_unlock(&dep->qlock);
- erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
- dep->send = NULL;
- erts_de_rwunlock(dep);
-
- erts_resume_processes(suspendees);
+ return obuf;
+}
- delete_cache(cache);
+static void free_de_out_queues(DistEntry* dep, ErtsDistOutputBuf *obuf)
+{
+ Sint obufsize = 0;
while (obuf) {
ErtsDistOutputBuf *fobuf;
@@ -750,13 +723,54 @@ static void clear_dist_entry(DistEntry *dep)
if (obufsize) {
erts_mtx_lock(&dep->qlock);
- ASSERT(erts_atomic_read_nob(&dep->qsize) >= obufsize);
+ ASSERT(erts_atomic_read_nob(&dep->qsize) >= obufsize);
erts_atomic_add_nob(&dep->qsize,
(erts_aint_t) -obufsize);
erts_mtx_unlock(&dep->qlock);
}
}
+static void clear_dist_entry(DistEntry *dep)
+{
+ ErtsAtomCache *cache;
+ ErtsProcList *suspendees;
+ ErtsDistOutputBuf *obuf;
+
+ erts_de_rwlock(dep);
+ erts_atomic_set_nob(&dep->input_handler,
+ (erts_aint_t) NIL);
+ 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);
+ erts_atomic64_set_nob(&dep->out, 0);
+
+ obuf = clear_de_out_queues(dep);
+ dep->status = 0;
+ suspendees = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
+
+ erts_mtx_unlock(&dep->qlock);
+ erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
+ dep->send = NULL;
+ erts_de_rwunlock(dep);
+
+ erts_resume_processes(suspendees);
+
+ delete_cache(cache);
+
+ free_de_out_queues(dep, obuf);
+}
+
int erts_dsend_context_dtor(Binary* ctx_bin)
{
ErtsSendContext* ctx = ERTS_MAGIC_BIN_DATA(ctx_bin);
@@ -772,8 +786,8 @@ int erts_dsend_context_dtor(Binary* ctx_bin)
if (ctx->dss.phase >= ERTS_DSIG_SEND_PHASE_ALLOC && ctx->dss.obuf) {
free_dist_obuf(ctx->dss.obuf);
}
- if (ctx->dep_to_deref)
- erts_deref_dist_entry(ctx->dep_to_deref);
+ if (ctx->deref_dep)
+ erts_deref_dist_entry(ctx->dep);
return 1;
}
@@ -1324,7 +1338,7 @@ int erts_net_message(Port *prt,
/* This is tricky (we MUST force a distributed send) */
ErtsDSigData dsd;
int code;
- code = erts_dsig_prepare(&dsd, dep, NULL, ERTS_DSP_NO_LOCK, 0);
+ 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);
@@ -1416,7 +1430,7 @@ int erts_net_message(Port *prt,
if (!rp) {
ErtsDSigData dsd;
int code;
- code = erts_dsig_prepare(&dsd, dep, NULL, ERTS_DSP_NO_LOCK, 0);
+ 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);
@@ -1883,7 +1897,7 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
}
else {
ctx->acmp = NULL;
- ctx->pass_through_size = 1;
+ ctx->pass_through_size = 3; /* SVERK rename */
}
#ifdef ERTS_DIST_MSG_DBG
@@ -1961,9 +1975,9 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
ctx->obuf->next = NULL;
erts_de_rlock(dep);
cid = dep->cid;
- if (cid != dsdp->cid
- || dep->connection_id != dsdp->connection_id
- || dep->status & ERTS_DE_SFLG_EXITING) {
+ if (!(dep->status & (ERTS_DE_SFLG_PENDING | ERTS_DE_SFLG_CONNECTED))
+ || dep->status & ERTS_DE_SFLG_EXITING
+ || dep->connection_id != dsdp->connection_id) {
/* Not the same connection as when we started; drop message... */
erts_de_runlock(dep);
free_dist_obuf(ctx->obuf);
@@ -2037,8 +2051,13 @@ erts_dsig_send(ErtsDSigData *dsdp, struct erts_dsig_send_context* ctx)
}
erts_mtx_unlock(&dep->qlock);
- if (is_internal_port(dep->cid))
- erts_schedule_dist_command(NULL, dep);
+ if (!(dep->status & ERTS_DE_SFLG_PENDING)) {
+ if (is_internal_port(dep->cid))
+ erts_schedule_dist_command(NULL, dep);
+ }
+ else {
+ notify_proc = NIL;
+ }
erts_de_runlock(dep);
if (is_internal_pid(notify_proc))
notify_dist_data(ctx->c_p, notify_proc);
@@ -2306,9 +2325,6 @@ erts_dist_command(Port *prt, int reds_limit)
ob->extp = erts_encode_ext_dist_header_finalize(ob->extp,
dep->cache,
flags);
- if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
- *--ob->extp = PASS_THROUGH; /* Old node; 'pass through'
- needed */
ASSERT(&ob->data[0] <= ob->extp && ob->extp < ob->ext_endp);
reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
preempt = reds > reds_limit;
@@ -2346,21 +2362,18 @@ erts_dist_command(Port *prt, int reds_limit)
int de_busy;
int preempt = 0;
while (oq.first && !preempt) {
- ErtsDistOutputBuf *fob;
- Uint size;
- oq.first->extp
- = erts_encode_ext_dist_header_finalize(oq.first->extp,
- dep->cache,
- flags);
- reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
- if (!(flags & DFLAG_DIST_HDR_ATOM_CACHE))
- *--oq.first->extp = PASS_THROUGH; /* Old node; 'pass through'
- needed */
- ASSERT(&oq.first->data[0] <= oq.first->extp
- && oq.first->extp < oq.first->ext_endp);
- size = (*send)(prt, oq.first);
+ ErtsDistOutputBuf *fob;
+ Uint size;
+ oq.first->extp
+ = erts_encode_ext_dist_header_finalize(oq.first->extp,
+ dep->cache,
+ flags);
+ reds += ERTS_PORT_REDS_DIST_CMD_FINALIZE;
+ ASSERT(&oq.first->data[0] <= oq.first->extp
+ && oq.first->extp < oq.first->ext_endp);
+ size = (*send)(prt, oq.first);
erts_atomic64_inc_nob(&dep->out);
- esdp->io.out += (Uint64) size;
+ esdp->io.out += (Uint64) size;
#ifdef ERTS_RAW_DIST_MSG_DBG
erts_fprintf(stderr, ">> ");
bw(oq.first->extp, size);
@@ -2482,11 +2495,13 @@ erts_dist_command(Port *prt, int reds_limit)
foq.first = NULL;
foq.last = NULL;
+/* SVERK Hmmm....
#ifdef DEBUG
erts_mtx_lock(&dep->qlock);
ASSERT(erts_atomic_read_nob(&dep->qsize) == obufsize);
erts_mtx_unlock(&dep->qlock);
#endif
+*/
}
else {
if (oq.first) {
@@ -3218,6 +3233,8 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
ErtsProcLocks proc_unlock = 0;
Process *proc;
Port *pp = NULL;
+ Eterm notify_proc;
+ erts_aint32_t qflgs;
/*
* Check and pick out arguments
@@ -3245,15 +3262,14 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
if (!is_atom(ic) || !is_atom(oc))
goto badarg;
- /* DFLAG_EXTENDED_REFERENCES is compulsory from R9 and forward */
- if (!(DFLAG_EXTENDED_REFERENCES & flags)) {
+ if (~flags & DFLAG_DIST_MANDATORY) {
erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
erts_dsprintf(dsbufp, "%T", BIF_P->common.id);
if (BIF_P->common.u.alive.reg)
erts_dsprintf(dsbufp, " (%T)", BIF_P->common.u.alive.reg->name);
erts_dsprintf(dsbufp,
" attempted to enable connection to node %T "
- "which is not able to handle extended references.\n",
+ "which does not support all mandatory capabilities.\n",
BIF_ARG_1);
erts_send_error_to_logger(BIF_P->group_leader, dsbufp);
goto badarg;
@@ -3376,7 +3392,8 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
dep->creation = 0;
#ifdef DEBUG
- ASSERT(erts_atomic_read_nob(&dep->qsize) == 0);
+ ASSERT(erts_atomic_read_nob(&dep->qsize) == 0
+ || (dep->status & ERTS_DE_SFLG_PENDING));
#endif
if (flags & DFLAG_DIST_HDR_ATOM_CACHE)
@@ -3384,7 +3401,26 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
erts_set_dist_entry_connected(dep, BIF_ARG_2, flags);
+ notify_proc = NIL;
+ if (erts_atomic_read_nob(&dep->qsize)) {
+ if (is_internal_port(dep->cid)) {
+ erts_schedule_dist_command(NULL, dep);
+ }
+ else {
+ qflgs = erts_atomic32_read_nob(&dep->qflgs);
+ if (qflgs & ERTS_DE_QFLG_REQ_INFO) {
+ qflgs = erts_atomic32_read_band_mb(&dep->qflgs,
+ ~ERTS_DE_QFLG_REQ_INFO);
+ if (qflgs & ERTS_DE_QFLG_REQ_INFO) {
+ notify_proc = dep->cid;
+ ASSERT(is_internal_pid(notify_proc));
+ }
+ }
+ }
+ }
erts_de_rwunlock(dep);
+ if (is_internal_pid(notify_proc))
+ notify_dist_data(BIF_P, notify_proc);
ERTS_BIF_PREP_RET(ret, erts_make_dhandle(BIF_P, dep));
@@ -3426,6 +3462,112 @@ BIF_RETTYPE setnode_3(BIF_ALIST_3)
goto done;
}
+BIF_RETTYPE new_connection_id_1(BIF_ALIST_1)
+{
+ DistEntry* dep;
+ Uint32 conn_id;
+
+ if (is_not_atom(BIF_ARG_1)) {
+ BIF_ERROR(BIF_P, BADARG);
+ }
+ dep = erts_find_or_insert_dist_entry(BIF_ARG_1);
+ ASSERT(dep != erts_this_dist_entry); /* SVERK: What to do? */
+
+ erts_de_rwlock(dep);
+
+ if (ERTS_DE_IS_CONNECTED(dep) || dep->status & ERTS_DE_SFLG_PENDING)
+ conn_id = dep->connection_id;
+ else if (dep->status == 0) {
+ dep->status = ERTS_DE_SFLG_PENDING;
+ dep->flags = DFLAG_DIST_MANDATORY | DFLAG_PENDING_CONNECTION;
+ dep->connection_id++;
+ dep->connection_id &= ERTS_DIST_CON_ID_MASK;
+ conn_id = dep->connection_id;
+ }
+ else {
+ ASSERT(!"SVERK: What to do?");
+ conn_id = dep->connection_id;
+ }
+ erts_de_rwunlock(dep);
+ BIF_RET(make_small(conn_id));
+}
+
+BIF_RETTYPE abort_connection_id_2(BIF_ALIST_2)
+{
+ DistEntry* dep;
+
+ if (is_not_atom(BIF_ARG_1) || is_not_small(BIF_ARG_2)) {
+ BIF_ERROR(BIF_P, BADARG);
+ }
+ dep = erts_find_dist_entry(BIF_ARG_1);
+ ASSERT(dep != erts_this_dist_entry); /* SVERK: What to do? */
+
+ if (!dep) {
+ BIF_RET(am_false);
+ }
+
+ erts_de_rwlock(dep);
+
+ if (dep->status == ERTS_DE_SFLG_PENDING
+ && dep->connection_id == unsigned_val(BIF_ARG_2)) {
+
+ NetExitsContext nec = {dep};
+ ErtsLink *nlinks;
+ ErtsLink *node_links;
+ ErtsMonitor *monitors;
+ ErtsAtomCache *cache;
+ ErtsDistOutputBuf *obuf;
+ ErtsProcList *resume_procs;
+ Sint reds = 0;
+
+ 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);
+
+ cache = dep->cache;
+ dep->cache = NULL;
+ dep->status = 0;
+ dep->flags = 0;
+ erts_mtx_lock(&dep->qlock);
+ obuf = dep->out_queue.first;
+ dep->out_queue.first = NULL;
+ dep->out_queue.last = NULL;
+ ASSERT(!dep->tmp_out_queue.first);
+ ASSERT(!dep->finalized_out_queue.first);
+ resume_procs = get_suspended_on_de(dep, ERTS_DE_QFLGS_ALL);
+ erts_mtx_unlock(&dep->qlock);
+ erts_atomic_set_nob(&dep->dist_cmd_scheduled, 0);
+ dep->send = NULL;
+ 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);
+
+ if (resume_procs) {
+ int resumed = erts_resume_processes(resume_procs);
+ reds += resumed*ERTS_PORT_REDS_DIST_CMD_RESUMED;
+ }
+
+ delete_cache(cache);
+
+ free_de_out_queues(dep, obuf);
+
+ BIF_RET2(am_true, reds);
+ }
+
+ erts_de_rwunlock(dep);
+
+ BIF_RET(am_false);
+}
+
/**********************************************************************/
/* dist_exit(Local, Term, Remote) -> Bool */