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authorRickard Green <[email protected]>2010-12-17 10:39:37 +0100
committerRickard Green <[email protected]>2010-12-17 10:39:37 +0100
commitf4f3beb158352b23959c09f8b0dfc83013d5fdf2 (patch)
tree6684443f968a9442d26afb6346e992466fc07c11 /erts/emulator/beam/erl_process.c
parent3e219dd7c05762fae05815db2813e765fd3b3a8f (diff)
parent8b18824e2b13e60fb1a067f80dbb228172f6a3d2 (diff)
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Merge branch 'rickard/ets-tab-delete/OTP-8999' into dev
* rickard/ets-tab-delete/OTP-8999: Safe deallocation of ETS-table structures Fix rwlock resource leak when hitting system limit Conflicts: erts/emulator/beam/erl_process.h erts/emulator/beam/erl_process.c
Diffstat (limited to 'erts/emulator/beam/erl_process.c')
-rw-r--r--erts/emulator/beam/erl_process.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 77ee1d6ac5..fbe4381aca 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -590,6 +590,122 @@ erts_sched_finish_poke(ErtsSchedulerSleepInfo *ssi, erts_aint32_t flags)
}
}
+typedef struct erts_misc_aux_work_t_ erts_misc_aux_work_t;
+struct erts_misc_aux_work_t_ {
+ erts_misc_aux_work_t *next;
+ void (*func)(void *);
+ void *arg;
+};
+
+typedef struct {
+ erts_smp_mtx_t mtx;
+ erts_misc_aux_work_t *first;
+ erts_misc_aux_work_t *last;
+} erts_misc_aux_work_q_t;
+
+typedef union {
+ erts_misc_aux_work_q_t data;
+ char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(erts_misc_aux_work_q_t))];
+} erts_algnd_misc_aux_work_q_t;
+
+static erts_algnd_misc_aux_work_q_t *misc_aux_work_queues;
+
+ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(misc_aux_work,
+ erts_misc_aux_work_t,
+ 200,
+ ERTS_ALC_T_MISC_AUX_WORK)
+
+static void
+init_misc_aux_work(void)
+{
+ int ix;
+
+ init_misc_aux_work_alloc();
+
+ misc_aux_work_queues = erts_alloc(ERTS_ALC_T_MISC_AUX_WORK_Q,
+ (sizeof(erts_algnd_misc_aux_work_q_t)
+ *(erts_no_schedulers+1)));
+ if ((((UWord) misc_aux_work_queues) & ERTS_CACHE_LINE_MASK) != 0)
+ misc_aux_work_queues = ((erts_algnd_misc_aux_work_q_t *)
+ ((((UWord) misc_aux_work_queues)
+ & ~ERTS_CACHE_LINE_MASK)
+ + ERTS_CACHE_LINE_SIZE));
+
+ for (ix = 0; ix < erts_no_schedulers; ix++) {
+ erts_smp_mtx_init_x(&misc_aux_work_queues[ix].data.mtx,
+ "misc_aux_work_queue",
+ make_small(ix + 1));
+ misc_aux_work_queues[ix].data.first = NULL;
+ misc_aux_work_queues[ix].data.last = NULL;
+ }
+}
+
+static void
+handle_misc_aux_work(ErtsSchedulerData *esdp)
+{
+ int ix = (int) esdp->no - 1;
+ erts_misc_aux_work_t *mawp;
+
+ erts_smp_mtx_lock(&misc_aux_work_queues[ix].data.mtx);
+ mawp = misc_aux_work_queues[ix].data.first;
+ misc_aux_work_queues[ix].data.first = NULL;
+ misc_aux_work_queues[ix].data.last = NULL;
+ erts_smp_mtx_unlock(&misc_aux_work_queues[ix].data.mtx);
+
+ while (mawp) {
+ erts_misc_aux_work_t *free_mawp;
+ mawp->func(mawp->arg);
+ free_mawp = mawp;
+ mawp = mawp->next;
+ misc_aux_work_free(free_mawp);
+ }
+}
+
+void
+erts_smp_schedule_misc_aux_work(int ignore_self,
+ int max_sched,
+ void (*func)(void *),
+ void *arg)
+{
+ int ix, ignore_ix = -1;
+
+ if (ignore_self) {
+ ErtsSchedulerData *esdp = erts_get_scheduler_data();
+ if (esdp)
+ ignore_ix = (int) esdp->no - 1;
+ }
+
+ ASSERT(0 <= max_sched && max_sched <= erts_no_schedulers);
+
+ for (ix = 0; ix < max_sched; ix++) {
+ long aux_work;
+ erts_misc_aux_work_t *mawp;
+ ErtsSchedulerSleepInfo *ssi;
+ if (ix == ignore_ix)
+ continue;
+
+ mawp = misc_aux_work_alloc();
+
+ mawp->func = func;
+ mawp->arg = arg;
+ mawp->next = NULL;
+
+ erts_smp_mtx_lock(&misc_aux_work_queues[ix].data.mtx);
+ if (!misc_aux_work_queues[ix].data.last)
+ misc_aux_work_queues[ix].data.first = mawp;
+ else
+ misc_aux_work_queues[ix].data.last->next = mawp;
+ misc_aux_work_queues[ix].data.last = mawp;
+ erts_smp_mtx_unlock(&misc_aux_work_queues[ix].data.mtx);
+
+ ssi = ERTS_SCHED_SLEEP_INFO_IX(ix);
+ aux_work = erts_smp_atomic32_bor(&ssi->aux_work,
+ ERTS_SSI_AUX_WORK_MISC);
+ if ((aux_work & ERTS_SSI_AUX_WORK_MISC) == 0)
+ erts_sched_poke(ssi);
+ }
+}
+
#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
void
erts_smp_notify_check_children_needed(void)
@@ -615,6 +731,12 @@ blockable_aux_work(ErtsSchedulerData *esdp,
erts_aint32_t aux_work)
{
if (aux_work & ERTS_SSI_BLOCKABLE_AUX_WORK_MASK) {
+ if (aux_work & ERTS_SSI_AUX_WORK_MISC) {
+ aux_work = erts_smp_atomic32_band(&ssi->aux_work,
+ ~ERTS_SSI_AUX_WORK_MISC);
+ aux_work &= ~ERTS_SSI_AUX_WORK_MISC;
+ handle_misc_aux_work(esdp);
+ }
#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN
if (aux_work & ERTS_SSI_AUX_WORK_CHECK_CHILDREN) {
aux_work = erts_smp_atomic32_band(&ssi->aux_work,
@@ -2612,6 +2734,8 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online)
erts_smp_atomic32_init(&doing_sys_schedule, 0);
+ init_misc_aux_work();
+
#else /* !ERTS_SMP */
{
ErtsSchedulerData *esdp;
@@ -2739,6 +2863,19 @@ resume_process(Process *p)
p->rstatus = P_FREE;
}
+int
+erts_get_max_no_executing_schedulers(void)
+{
+#ifdef ERTS_SMP
+ if (erts_smp_atomic32_read(&schdlr_sspnd.changing))
+ return (int) erts_no_schedulers;
+ ERTS_THR_MEMORY_BARRIER;
+ return (int) erts_smp_atomic32_read(&schdlr_sspnd.active);
+#else
+ return 1;
+#endif
+}
+
#ifdef ERTS_SMP
static void