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-rw-r--r--erts/doc/src/erl.xml12
-rw-r--r--erts/doc/src/erlang.xml10
-rw-r--r--erts/emulator/beam/dist.c2
-rw-r--r--erts/emulator/beam/erl_bif_info.c20
-rw-r--r--erts/emulator/beam/erl_init.c36
-rw-r--r--erts/emulator/beam/erl_node_tables.c202
-rw-r--r--erts/emulator/beam/erl_node_tables.h16
-rw-r--r--erts/emulator/test/node_container_SUITE.erl47
-rw-r--r--erts/etc/common/erlexec.c1
-rw-r--r--erts/preloaded/ebin/erlang.beambin101808 -> 101840 bytes
-rw-r--r--erts/preloaded/src/erlang.erl1
11 files changed, 288 insertions, 59 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index ea94a4e82b..00da503469 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -1350,6 +1350,18 @@
give lower latency and higher throughput at the expense
of higher memory usage.</p>
</item>
+ <tag><marker id="+zdntgc"><c>+zdntgc time</c></marker></tag>
+ <item>
+ <p>Set the delayed node table garbage collection time
+ (<seealso marker="erlang#system_info_delayed_node_table_gc">delayed_node_table_gc</seealso>)
+ in seconds. Valid values are either <c>infinity</c> or
+ an integer in the range [0-100000000]. Default is 60.</p>
+ <p>Node table entries that are not referred will linger
+ in the table for at least the amount of time that this
+ parameter determines. The lingering prevents repeated
+ deletions and insertions in the tables from occurring.
+ </p>
+ </item>
</taglist>
</item>
</taglist>
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 3fea64cef5..50a26781c4 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -6222,6 +6222,7 @@ ok
<name name="system_info" arity="1" clause_i="64"/>
<name name="system_info" arity="1" clause_i="65"/>
<name name="system_info" arity="1" clause_i="66"/>
+ <name name="system_info" arity="1" clause_i="67"/>
<fsummary>Information about the system</fsummary>
<desc>
<p>Returns various information about the current system
@@ -6291,6 +6292,15 @@ ok
compiled; otherwise, <c>false</c>.
</p>
</item>
+ <tag><marker id="system_info_delayed_node_table_gc"><c>delayed_node_table_gc</c></marker></tag>
+ <item>
+ <p>Returns the amount of time in seconds that garbage collection
+ of an entry in a node table will be delayed. This limit can be set
+ on startup by passing the
+ <seealso marker="erts:erl#+zdntgc">+zdntgc</seealso> command line
+ flag to <c>erl</c>. For more information see the documentation of the
+ command line flag.</p>
+ </item>
<tag><marker id="system_info_dirty_cpu_schedulers"><c>dirty_cpu_schedulers</c></marker></tag>
<item>
<p>Returns the number of dirty CPU scheduler threads used by
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index 142fcb3c00..cfdede793c 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -2522,7 +2522,7 @@ info_dist_entry(int to, void *arg, DistEntry *dep, int visible, int connected)
erts_print(to, arg, "Name: %T", dep->sysname);
#ifdef DEBUG
- erts_print(to, arg, " (refc=%d)", erts_refc_read(&dep->refc, 1));
+ erts_print(to, arg, " (refc=%d)", erts_refc_read(&dep->refc, 0));
#endif
erts_print(to, arg, "\n");
if (!connected && is_nil(dep->cid)) {
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index ae8a5c266a..23fc4f915e 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -2687,6 +2687,15 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
hp = hsz ? HAlloc(BIF_P, hsz) : NULL;
res = erts_bld_uint(&hp, NULL, erts_dist_buf_busy_limit);
BIF_RET(res);
+ } else if (ERTS_IS_ATOM_STR("delayed_node_table_gc", BIF_ARG_1)) {
+ Uint hsz = 0;
+ Uint dntgc = erts_delayed_node_table_gc();
+ if (dntgc == ERTS_NODE_TAB_DELAY_GC_INFINITY)
+ BIF_RET(am_infinity);
+ (void) erts_bld_uint(NULL, &hsz, dntgc);
+ hp = hsz ? HAlloc(BIF_P, hsz) : NULL;
+ res = erts_bld_uint(&hp, NULL, dntgc);
+ BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("ethread_info", BIF_ARG_1)) {
BIF_RET(erts_get_ethread_info(BIF_P));
}
@@ -4069,6 +4078,17 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
int res = erts_debug_set_unique_monotonic_integer_state(BIF_ARG_2);
BIF_RET(res ? am_true : am_false);
}
+ else if (ERTS_IS_ATOM_STR("node_tab_delayed_delete", BIF_ARG_1)) {
+ /* node_container_SUITE */
+ Sint64 msecs;
+ if (term_to_Sint64(BIF_ARG_2, &msecs)) {
+ /* Negative value restore original value... */
+ erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
+ erts_debug_test_node_tab_delayed_delete(msecs);
+ erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
+ BIF_RET(am_ok);
+ }
+ }
}
BIF_ERROR(BIF_P, BADARG);
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 988ff0e2b5..a2d2a3befc 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -141,7 +141,8 @@ static void erl_init(int ncpu,
int port_tab_sz_ignore_files,
int legacy_port_tab,
int time_correction,
- ErtsTimeWarpMode time_warp_mode);
+ ErtsTimeWarpMode time_warp_mode,
+ int node_tab_delete_delay);
static erts_atomic_t exiting;
@@ -314,7 +315,8 @@ erts_short_init(void)
0,
0,
time_correction,
- time_warp_mode);
+ time_warp_mode,
+ ERTS_NODE_TAB_DELAY_GC_DEFAULT);
erts_initialized = 1;
}
@@ -326,7 +328,8 @@ erl_init(int ncpu,
int port_tab_sz_ignore_files,
int legacy_port_tab,
int time_correction,
- ErtsTimeWarpMode time_warp_mode)
+ ErtsTimeWarpMode time_warp_mode,
+ int node_tab_delete_delay)
{
init_benchmarking();
@@ -367,7 +370,7 @@ erl_init(int ncpu,
erts_init_binary(); /* Must be after init_emulator() */
erts_bp_init();
init_db(); /* Must be after init_emulator */
- erts_init_node_tables();
+ erts_init_node_tables(node_tab_delete_delay);
init_dist();
erl_drv_thr_init();
erts_init_async();
@@ -629,6 +632,9 @@ void erts_usage(void)
erts_fprintf(stderr, " see error_logger documentation for details\n");
erts_fprintf(stderr, "-zdbbl size set the distribution buffer busy limit in kilobytes\n");
erts_fprintf(stderr, " valid range is [1-%d]\n", INT_MAX/1024);
+ erts_fprintf(stderr, "-zdntgc time set delayed node table gc in seconds\n");
+ erts_fprintf(stderr, " valid values are infinity or intergers in the range [0-%d]\n",
+ ERTS_NODE_TAB_DELAY_GC_MAX);
erts_fprintf(stderr, "\n");
erts_fprintf(stderr, "Note that if the emulator is started with erlexec (typically\n");
erts_fprintf(stderr, "from the erl script), these flags should be specified with +.\n");
@@ -1219,6 +1225,7 @@ erl_start(int argc, char **argv)
int legacy_port_tab = 0;
int time_correction;
ErtsTimeWarpMode time_warp_mode;
+ int node_tab_delete_delay = ERTS_NODE_TAB_DELAY_GC_DEFAULT;
set_default_time_adj(&time_correction,
&time_warp_mode);
@@ -2004,9 +2011,9 @@ erl_start(int argc, char **argv)
case 'z': {
char *sub_param = argv[i]+2;
- int new_limit;
if (has_prefix("dbbl", sub_param)) {
+ int new_limit;
arg = get_arg(sub_param+4, argv[i+1], &i);
new_limit = atoi(arg);
if (new_limit < 1 || INT_MAX/1024 < new_limit) {
@@ -2015,6 +2022,22 @@ erl_start(int argc, char **argv)
} else {
erts_dist_buf_busy_limit = new_limit*1024;
}
+ }
+ else if (has_prefix("dntgc", sub_param)) {
+ long secs;
+
+ arg = get_arg(sub_param+5, argv[i+1], &i);
+ if (sys_strcmp(arg, "infinity") == 0)
+ secs = ERTS_NODE_TAB_DELAY_GC_INFINITY;
+ else {
+ errno = 0;
+ secs = strtol(arg, NULL, 10);
+ if (errno != 0 || secs < 0 || ERTS_NODE_TAB_DELAY_GC_MAX < secs) {
+ erts_fprintf(stderr, "Invalid delayed node table gc: %ld\n", secs);
+ erts_usage();
+ }
+ }
+ node_tab_delete_delay = (int) secs;
} else {
erts_fprintf(stderr, "bad -z option %s\n", argv[i]);
erts_usage();
@@ -2088,7 +2111,8 @@ erl_start(int argc, char **argv)
port_tab_sz_ignore_files,
legacy_port_tab,
time_correction,
- time_warp_mode);
+ time_warp_mode,
+ node_tab_delete_delay);
load_preloaded();
erts_end_staging_code_ix();
diff --git a/erts/emulator/beam/erl_node_tables.c b/erts/emulator/beam/erl_node_tables.c
index 900fdb3ab5..c2acaea0bc 100644
--- a/erts/emulator/beam/erl_node_tables.c
+++ b/erts/emulator/beam/erl_node_tables.c
@@ -51,6 +51,9 @@ static Uint dist_entries;
static int references_atoms_need_init = 1;
+static ErtsMonotonicTime orig_node_tab_delete_delay;
+static ErtsMonotonicTime node_tab_delete_delay;
+
/* -- The distribution table ---------------------------------------------- */
#ifdef DEBUG
@@ -290,21 +293,46 @@ DistEntry *erts_find_dist_entry(Eterm sysname)
return res;
}
-void erts_delete_dist_entry(DistEntry *dep)
+static void try_delete_dist_entry(void *vdep)
+{
+ DistEntry *dep = (DistEntry *) vdep;
+ erts_aint_t refc;
+
+ erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
+ /*
+ * Another thread might have looked up this dist entry after
+ * we decided to delete it (refc became zero). If so, the other
+ * thread incremented refc twice. Once for the new reference
+ * and once for this thread.
+ *
+ * If refc reach -1, noone has used the entry since we
+ * set up the timer. Delete the entry.
+ *
+ * If refc reach 0, the entry is currently not in use
+ * but has been used since we set up the timer. Set up a
+ * new timer.
+ *
+ * If refc > 0, the entry is in use. Keep the entry.
+ */
+ refc = erts_refc_dectest(&dep->refc, -1);
+ if (refc == -1)
+ (void) hash_erase(&erts_dist_table, (void *) dep);
+ erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+
+ if (refc == 0)
+ erts_schedule_delete_dist_entry(dep);
+}
+
+void erts_schedule_delete_dist_entry(DistEntry *dep)
{
ASSERT(dep != erts_this_dist_entry);
- if(dep != erts_this_dist_entry) {
- erts_smp_rwmtx_rwlock(&erts_dist_table_rwmtx);
- /*
- * Another thread might have looked up this dist entry after
- * we decided to delete it (refc became zero). If so, the other
- * thread incremented refc twice. Once for the new reference
- * and once for this thread. Therefore, delete dist entry if
- * refc is 0 or -1 after a decrement.
- */
- if (erts_refc_dectest(&dep->refc, -1) <= 0)
- (void) hash_erase(&erts_dist_table, (void *) dep);
- erts_smp_rwmtx_rwunlock(&erts_dist_table_rwmtx);
+ if (dep != erts_this_dist_entry) {
+ if (node_tab_delete_delay == 0)
+ try_delete_dist_entry((void *) dep);
+ else if (node_tab_delete_delay > 0)
+ erts_start_timer_callback(node_tab_delete_delay,
+ try_delete_dist_entry,
+ (void *) dep);
}
}
@@ -609,21 +637,46 @@ ErlNode *erts_find_or_insert_node(Eterm sysname, Uint creation)
return res;
}
-void erts_delete_node(ErlNode *enp)
+static void try_delete_node(void *venp)
+{
+ ErlNode *enp = (ErlNode *) venp;
+ erts_aint_t refc;
+
+ erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
+ /*
+ * Another thread might have looked up this node after we
+ * decided to delete it (refc became zero). If so, the other
+ * thread incremented refc twice. Once for the new reference
+ * and once for this thread.
+ *
+ * If refc reach -1, noone has used the entry since we
+ * set up the timer. Delete the entry.
+ *
+ * If refc reach 0, the entry is currently not in use
+ * but has been used since we set up the timer. Set up a
+ * new timer.
+ *
+ * If refc > 0, the entry is in use. Keep the entry.
+ */
+ refc = erts_refc_dectest(&enp->refc, -1);
+ if (refc == -1)
+ (void) hash_erase(&erts_node_table, (void *) enp);
+ erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+
+ if (refc == 0)
+ erts_schedule_delete_node(enp);
+}
+
+void erts_schedule_delete_node(ErlNode *enp)
{
ASSERT(enp != erts_this_node);
- if(enp != erts_this_node) {
- erts_smp_rwmtx_rwlock(&erts_node_table_rwmtx);
- /*
- * Another thread might have looked up this node after we
- * decided to delete it (refc became zero). If so, the other
- * thread incremented refc twice. Once for the new reference
- * and once for this thread. Therefore, delete node if refc
- * is 0 or -1 after a decrement.
- */
- if (erts_refc_dectest(&enp->refc, -1) <= 0)
- (void) hash_erase(&erts_node_table, (void *) enp);
- erts_smp_rwmtx_rwunlock(&erts_node_table_rwmtx);
+ if (enp != erts_this_node) {
+ if (node_tab_delete_delay == 0)
+ try_delete_node((void *) enp);
+ else if (node_tab_delete_delay > 0)
+ erts_start_timer_callback(node_tab_delete_delay,
+ try_delete_node,
+ (void *) enp);
}
}
@@ -651,7 +704,7 @@ static void print_node(void *venp, void *vpndp)
erts_print(pndp->to, pndp->to_arg, " %d", enp->creation);
#ifdef DEBUG
erts_print(pndp->to, pndp->to_arg, " (refc=%ld)",
- erts_refc_read(&enp->refc, 1));
+ erts_refc_read(&enp->refc, 0));
#endif
pndp->no_sysname++;
}
@@ -714,11 +767,28 @@ erts_set_this_node(Eterm sysname, Uint creation)
}
-void erts_init_node_tables(void)
+Uint
+erts_delayed_node_table_gc(void)
+{
+ if (node_tab_delete_delay < 0)
+ return (Uint) ERTS_NODE_TAB_DELAY_GC_INFINITY;
+ if (node_tab_delete_delay == 0)
+ return (Uint) 0;
+ return (Uint) ((node_tab_delete_delay-1)/1000 + 1);
+}
+
+void erts_init_node_tables(int dd_sec)
{
erts_smp_rwmtx_opt_t rwmtx_opt = ERTS_SMP_RWMTX_OPT_DEFAULT_INITER;
HashFunctions f;
+ if (dd_sec == ERTS_NODE_TAB_DELAY_GC_INFINITY)
+ node_tab_delete_delay = (ErtsMonotonicTime) -1;
+ else
+ node_tab_delete_delay = ((ErtsMonotonicTime) dd_sec)*1000;
+
+ orig_node_tab_delete_delay = node_tab_delete_delay;
+
rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ;
rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED;
@@ -847,6 +917,7 @@ static Eterm AM_dist_references;
static Eterm AM_node_references;
static Eterm AM_system;
static Eterm AM_timer;
+static Eterm AM_delayed_delete_timer;
static void setup_reference_table(void);
static Eterm reference_table_term(Uint **hpp, Uint *szp);
@@ -881,8 +952,10 @@ typedef struct dist_referrer_ {
int heap_ref;
int node_ref;
int ctrl_ref;
+ int system_ref;
Eterm id;
Uint creation;
+ Uint id_heap[ID_HEAP_SIZE];
} DistReferrer;
typedef struct {
@@ -931,6 +1004,7 @@ erts_get_node_and_dist_references(struct process *proc)
INIT_AM(node_references);
INIT_AM(timer);
INIT_AM(system);
+ INIT_AM(delayed_delete_timer);
references_atoms_need_init = 0;
}
@@ -988,17 +1062,25 @@ insert_dist_referrer(ReferredDist *referred_dist,
sizeof(DistReferrer));
drp->next = referred_dist->referrers;
referred_dist->referrers = drp;
- drp->id = id;
+ if(IS_CONST(id))
+ drp->id = id;
+ else {
+ Uint *hp = &drp->id_heap[0];
+ ASSERT(is_tuple(id));
+ drp->id = copy_struct(id, size_object(id), &hp, NULL);
+ }
drp->creation = creation;
drp->heap_ref = 0;
drp->node_ref = 0;
drp->ctrl_ref = 0;
+ drp->system_ref = 0;
}
switch (type) {
case NODE_REF: drp->node_ref++; break;
case CTRL_REF: drp->ctrl_ref++; break;
case HEAP_REF: drp->heap_ref++; break;
+ case SYSTEM_REF: drp->system_ref++; break;
default: ASSERT(0);
}
}
@@ -1261,6 +1343,33 @@ insert_sys_msg(Eterm from, Eterm to, Eterm msg, ErlHeapFragment *bp)
#endif
static void
+insert_delayed_delete_node(void *state,
+ ErtsMonotonicTime timeout_pos,
+ void *vnp)
+{
+ DeclareTmpHeapNoproc(heap,3);
+ UseTmpHeapNoproc(3);
+ insert_node((ErlNode *) vnp,
+ SYSTEM_REF,
+ TUPLE2(&heap[0], AM_system, AM_delayed_delete_timer));
+ UnUseTmpHeapNoproc(3);
+}
+
+static void
+insert_delayed_delete_dist_entry(void *state,
+ ErtsMonotonicTime timeout_pos,
+ void *vdep)
+{
+ DeclareTmpHeapNoproc(heap,3);
+ UseTmpHeapNoproc(3);
+ insert_dist_entry((DistEntry *) vdep,
+ SYSTEM_REF,
+ TUPLE2(&heap[0], AM_system, AM_delayed_delete_timer),
+ 0);
+ UnUseTmpHeapNoproc(3);
+}
+
+static void
setup_reference_table(void)
{
ErlHeapFragment *hfp;
@@ -1288,6 +1397,13 @@ setup_reference_table(void)
/* Go through the hole system, and build a table of all references
to ErlNode and DistEntry structures */
+ erts_debug_callback_timer_foreach(try_delete_node,
+ insert_delayed_delete_node,
+ NULL);
+ erts_debug_callback_timer_foreach(try_delete_dist_entry,
+ insert_delayed_delete_dist_entry,
+ NULL);
+
UseTmpHeapNoproc(3);
insert_node(erts_this_node,
SYSTEM_REF,
@@ -1601,7 +1717,7 @@ reference_table_term(Uint **hpp, Uint *szp)
tup = MK_2TUP(referred_nodes[i].node->sysname,
MK_UINT(referred_nodes[i].node->creation));
- tup = MK_3TUP(tup, MK_UINT(erts_refc_read(&referred_nodes[i].node->refc, 1)), nril);
+ tup = MK_3TUP(tup, MK_UINT(erts_refc_read(&referred_nodes[i].node->refc, 0)), nril);
nl = MK_CONS(tup, nl);
}
@@ -1624,6 +1740,10 @@ reference_table_term(Uint **hpp, Uint *szp)
tup = MK_2TUP(AM_heap, MK_UINT(drp->heap_ref));
drl = MK_CONS(tup, drl);
}
+ if(drp->system_ref) {
+ tup = MK_2TUP(AM_system, MK_UINT(drp->system_ref));
+ drl = MK_CONS(tup, drl);
+ }
if (is_internal_pid(drp->id)) {
ASSERT(!drp->node_ref);
@@ -1633,6 +1753,14 @@ reference_table_term(Uint **hpp, Uint *szp)
ASSERT(drp->ctrl_ref && !drp->node_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);
+ t = tuple_val(drp->id);
+ ASSERT(2 == arityval(t[0]));
+ tup = MK_2TUP(t[1], t[2]);
+ }
else {
ASSERT(!drp->ctrl_ref && drp->node_ref);
ASSERT(is_atom(drp->id));
@@ -1650,7 +1778,7 @@ reference_table_term(Uint **hpp, Uint *szp)
/* DistList = [{Dist, Refc, ReferenceIdList}] */
tup = MK_3TUP(referred_dists[i].dist->sysname,
- MK_UINT(erts_refc_read(&referred_dists[i].dist->refc, 1)),
+ MK_UINT(erts_refc_read(&referred_dists[i].dist->refc, 0)),
dril);
dl = MK_CONS(tup, dl);
}
@@ -1705,3 +1833,15 @@ delete_reference_table(void)
}
}
+void
+erts_debug_test_node_tab_delayed_delete(Sint64 millisecs)
+{
+ erts_smp_thr_progress_block();
+
+ if (millisecs < 0)
+ node_tab_delete_delay = orig_node_tab_delete_delay;
+ else
+ node_tab_delete_delay = millisecs;
+
+ erts_smp_thr_progress_unblock();
+}
diff --git a/erts/emulator/beam/erl_node_tables.h b/erts/emulator/beam/erl_node_tables.h
index af60071ea5..54c5cd1d11 100644
--- a/erts/emulator/beam/erl_node_tables.h
+++ b/erts/emulator/beam/erl_node_tables.h
@@ -46,6 +46,10 @@
#define ERTS_PORT_TASK_ONLY_BASIC_TYPES__
#include "erl_port_task.h"
#undef ERTS_PORT_TASK_ONLY_BASIC_TYPES__
+
+#define ERTS_NODE_TAB_DELAY_GC_DEFAULT (60)
+#define ERTS_NODE_TAB_DELAY_GC_MAX (100*1000*1000)
+#define ERTS_NODE_TAB_DELAY_GC_INFINITY (ERTS_NODE_TAB_DELAY_GC_MAX+1)
#define ERST_INTERNAL_CHANNEL_NO 0
@@ -166,20 +170,21 @@ extern DistEntry *erts_this_dist_entry;
extern ErlNode *erts_this_node;
extern char *erts_this_node_sysname; /* must match erl_node_tables.c */
+Uint erts_delayed_node_table_gc(void);
DistEntry *erts_channel_no_to_dist_entry(Uint);
DistEntry *erts_sysname_to_connected_dist_entry(Eterm);
DistEntry *erts_find_or_insert_dist_entry(Eterm);
DistEntry *erts_find_dist_entry(Eterm);
-void erts_delete_dist_entry(DistEntry *);
+void erts_schedule_delete_dist_entry(DistEntry *);
Uint erts_dist_table_size(void);
void erts_dist_table_info(int, void *);
void erts_set_dist_entry_not_connected(DistEntry *);
void erts_set_dist_entry_connected(DistEntry *, Eterm, Uint);
ErlNode *erts_find_or_insert_node(Eterm, Uint);
-void erts_delete_node(ErlNode *);
+void erts_schedule_delete_node(ErlNode *);
void erts_set_this_node(Eterm, Uint);
Uint erts_node_table_size(void);
-void erts_init_node_tables(void);
+void erts_init_node_tables(int);
void erts_node_table_info(int, void *);
void erts_print_node_info(int, void *, Eterm, int*, int*);
Eterm erts_get_node_and_dist_references(struct process *);
@@ -204,7 +209,7 @@ erts_deref_dist_entry(DistEntry *dep)
{
ASSERT(dep);
if (erts_refc_dectest(&dep->refc, 0) == 0)
- erts_delete_dist_entry(dep);
+ erts_schedule_delete_dist_entry(dep);
}
ERTS_GLB_INLINE void
@@ -212,7 +217,7 @@ erts_deref_node_entry(ErlNode *np)
{
ASSERT(np);
if (erts_refc_dectest(&np->refc, 0) == 0)
- erts_delete_node(np);
+ erts_schedule_delete_node(np);
}
ERTS_GLB_INLINE void
@@ -253,5 +258,6 @@ erts_smp_de_links_unlock(DistEntry *dep)
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
+void erts_debug_test_node_tab_delayed_delete(Sint64 millisecs);
#endif
diff --git a/erts/emulator/test/node_container_SUITE.erl b/erts/emulator/test/node_container_SUITE.erl
index 2f505893b4..479e6f200a 100644
--- a/erts/emulator/test/node_container_SUITE.erl
+++ b/erts/emulator/test/node_container_SUITE.erl
@@ -73,6 +73,8 @@ init_per_suite(Config) ->
Config.
end_per_suite(_Config) ->
+ erts_debug:set_internal_state(available_internal_state, true),
+ erts_debug:set_internal_state(node_tab_delayed_delete, -1), %% restore original value
available_internal_state(false).
init_per_group(_GroupName, Config) ->
@@ -419,6 +421,8 @@ node_table_gc(doc) ->
["Tests that node tables are garbage collected."];
node_table_gc(suite) -> [];
node_table_gc(Config) when is_list(Config) ->
+ erts_debug:set_internal_state(available_internal_state, true),
+ erts_debug:set_internal_state(node_tab_delayed_delete, 0),
?line PreKnown = nodes(known),
?line ?t:format("PreKnown = ~p~n", [PreKnown]),
?line make_node_garbage(0, 200000, 1000, []),
@@ -428,6 +432,7 @@ node_table_gc(Config) when is_list(Config) ->
?line ?t:format("PostAreas = ~p~n", [PostAreas]),
?line true = length(PostKnown) =< length(PreKnown),
?line nc_refc_check(node()),
+ erts_debug:set_internal_state(node_tab_delayed_delete, -1), %% restore original value
?line ok.
make_node_garbage(N, L, I, Ps) when N < L ->
@@ -579,6 +584,8 @@ node_controller_refc(doc) ->
"as they should for entities controlling a connections."];
node_controller_refc(suite) -> [];
node_controller_refc(Config) when is_list(Config) ->
+ erts_debug:set_internal_state(available_internal_state, true),
+ erts_debug:set_internal_state(node_tab_delayed_delete, 0),
?line NodeFirstName = get_nodefirstname(),
?line ?line {ok, Node} = start_node(NodeFirstName),
?line true = lists:member(Node, nodes()),
@@ -606,6 +613,7 @@ node_controller_refc(Config) when is_list(Config) ->
?line false = get_dist_references(Node),
?line false = lists:member(Node, nodes(known)),
?line nc_refc_check(node()),
+ erts_debug:set_internal_state(node_tab_delayed_delete, -1), %% restore original value
?line ok.
%%
@@ -686,9 +694,6 @@ timer_refc(doc) ->
"as they should for data stored in bif timers."];
timer_refc(suite) -> [];
timer_refc(Config) when is_list(Config) ->
- {skipped, "Test needs to be UPDATED for new timer implementation"}.
-
-timer_refc_test(Config) when is_list(Config) ->
?line RNode = {get_nodename(), 1},
?line RPid = mk_pid(RNode, 4711, 2),
?line RPort = mk_port(RNode, 4711),
@@ -992,23 +997,32 @@ check_nd_refc({ThisNodeName, ThisCreation}, NodeRefs, DistRefs, Fail) ->
check_refc(ThisNodeName,ThisCreation,Table,EntryList) when is_list(EntryList) ->
lists:foreach(
fun ({Entry, Refc, ReferrerList}) ->
- FoundRefs =
+ {DelayedDeleteTimer,
+ FoundRefs} =
lists:foldl(
- fun ({_Referrer, ReferencesList}, A1) ->
- A1 + lists:foldl(fun ({_T,Rs},A2) ->
- A2+Rs
- end,
- 0,
- ReferencesList)
+ fun ({Referrer, ReferencesList}, {DDT, A1}) ->
+ {case Referrer of
+ {system,delayed_delete_timer} ->
+ true;
+ _ ->
+ DDT
+ end,
+ A1 + lists:foldl(fun ({_T,Rs},A2) ->
+ A2+Rs
+ end,
+ 0,
+ ReferencesList)}
end,
- 0,
+ {false, 0},
ReferrerList),
- %% Reference count equals found references ?
- case Refc =:= FoundRefs of
- true ->
+ %% Reference count equals found references?
+ case {Refc, FoundRefs, DelayedDeleteTimer} of
+ {X, X, _} ->
+ ok;
+ {0, 1, true} ->
ok;
- false ->
+ _ ->
exit({invalid_reference_count, Table, Entry})
end,
@@ -1016,7 +1030,8 @@ check_refc(ThisNodeName,ThisCreation,Table,EntryList) when is_list(EntryList) ->
case {Entry, Refc} of
{ThisNodeName, 0} -> ok;
{{ThisNodeName, ThisCreation}, 0} -> ok;
- {_, 0} -> exit({not_referred_entry_in_table, Table, Entry});
+ {_, 0} when DelayedDeleteTimer == false ->
+ exit({not_referred_entry_in_table, Table, Entry});
{_, _} -> ok
end
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 23226909a7..d098100a51 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -157,6 +157,7 @@ static char *plusr_val_switches[] = {
/* +z arguments with values */
static char *plusz_val_switches[] = {
"dbbl",
+ "dntgc",
NULL
};
diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam
index b99dc7339a..863a5e61ef 100644
--- a/erts/preloaded/ebin/erlang.beam
+++ b/erts/preloaded/ebin/erlang.beam
Binary files differ
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index 9d9208d1b5..cf941ea6ca 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2392,6 +2392,7 @@ tuple_to_list(_Tuple) ->
CpuTopology :: cpu_topology();
(creation) -> integer();
(debug_compiled) -> boolean();
+ (delayed_node_table_gc) -> infinity | non_neg_integer();
(dirty_cpu_schedulers) -> non_neg_integer();
(dirty_cpu_schedulers_online) -> non_neg_integer();
(dirty_io_schedulers) -> non_neg_integer();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 22:34:29 +0000