diff options
Diffstat (limited to 'erts/emulator/beam/erl_process.c')
| -rw-r--r-- | erts/emulator/beam/erl_process.c | 736 |
1 files changed, 456 insertions, 280 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index 8253ec4f40..1f464e2e5a 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -92,10 +92,6 @@ #undef HARDDEBUG #endif -#ifdef HARDDEBUG -#define HARDDEBUG_RUNQS -#endif - #ifdef HIPE #include "hipe_mode_switch.h" /* for hipe_init_process() */ #include "hipe_signal.h" /* for hipe_thread_signal_init() */ @@ -174,7 +170,6 @@ ErtsLcPSDLocks erts_psd_required_locks[ERTS_PSD_SIZE]; typedef struct { int aux_work; int tse; - int sys_schedule; } ErtsBusyWaitParams; static ErtsBusyWaitParams sched_busy_wait_params[ERTS_SCHED_TYPE_LAST + 1]; @@ -344,6 +339,10 @@ erts_sched_stat_t erts_sched_stat; static erts_tsd_key_t ERTS_WRITE_UNLIKELY(sched_data_key); +#if ERTS_POLL_USE_SCHEDULER_POLLING +static erts_atomic32_t function_calls; +static erts_atomic32_t doing_sys_schedule; +#endif static erts_atomic32_t no_empty_run_queues; long erts_runq_supervision_interval = 0; static ethr_event runq_supervision_event; @@ -1646,7 +1645,7 @@ haw_thr_prgr_wakeup(ErtsAuxWorkData *awdp, ErtsThrPrgrVal val) awdp->latest_wakeup = val; haw_chk_later_cleanup_op_wakeup(awdp, val); } - erts_thr_progress_wakeup(awdp->esdp, val); + erts_thr_progress_wakeup(erts_thr_prgr_data(awdp->esdp), val); } } @@ -1656,7 +1655,7 @@ haw_thr_prgr_soft_wakeup(ErtsAuxWorkData *awdp, ErtsThrPrgrVal val) if (erts_thr_progress_cmp(val, awdp->latest_wakeup) > 0) { awdp->latest_wakeup = val; haw_chk_later_cleanup_op_wakeup(awdp, val); - erts_thr_progress_wakeup(awdp->esdp, val); + erts_thr_progress_wakeup(erts_thr_prgr_data(awdp->esdp), val); } } @@ -1670,7 +1669,7 @@ haw_thr_prgr_later_cleanup_op_wakeup(ErtsAuxWorkData *awdp, ErtsThrPrgrVal val, else { awdp->latest_wakeup = val; awdp->later_op.size = thr_prgr_later_cleanup_op_threshold; - erts_thr_progress_wakeup(awdp->esdp, val); + erts_thr_progress_wakeup(erts_thr_prgr_data(awdp->esdp), val); } } } @@ -2463,6 +2462,13 @@ handle_reap_ports(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiting) erts_port_lock(prt); + if (prt->common.u.alive.reg && + prt->common.u.alive.reg->name == am_heart_port) { + /* Leave heart port to not get killed before flushing is done*/ + erts_port_release(prt); + continue; + } + state = erts_atomic32_read_nob(&prt->state); if (!(state & (ERTS_PORT_SFLGS_INVALID_DRIVER_LOOKUP | ERTS_PORT_SFLG_HALT))) { @@ -3066,6 +3072,7 @@ aux_thread(void *unused) ErtsSchedulerSleepInfo *ssi = ERTS_SCHED_SLEEP_INFO_IX(-1); erts_aint32_t aux_work; ErtsThrPrgrCallbacks callbacks; + ErtsThrPrgrData *tpd; int thr_prgr_active = 1; ERTS_MSACC_DECLARE_CACHE(); @@ -3087,12 +3094,16 @@ aux_thread(void *unused) callbacks.wait = thr_prgr_wait; callbacks.finalize_wait = thr_prgr_fin_wait; - erts_thr_progress_register_managed_thread(NULL, &callbacks, 1); + tpd = erts_thr_progress_register_managed_thread(NULL, &callbacks, 1); init_aux_work_data(awdp, NULL, NULL); awdp->ssi = ssi; #if ERTS_POLL_USE_FALLBACK - ssi->psi = erts_create_pollset_thread(-1); +#if ERTS_POLL_USE_SCHEDULER_POLLING + ssi->psi = erts_create_pollset_thread(-2, tpd); +#else + ssi->psi = erts_create_pollset_thread(-1, tpd); +#endif #endif sched_prep_spin_wait(ssi); @@ -3105,11 +3116,11 @@ aux_thread(void *unused) aux_work = erts_atomic32_read_acqb(&ssi->aux_work); if (aux_work) { if (!thr_prgr_active) - erts_thr_progress_active(NULL, thr_prgr_active = 1); + erts_thr_progress_active(tpd, thr_prgr_active = 1); aux_work = handle_aux_work(awdp, aux_work, 1); ERTS_MSACC_UPDATE_CACHE(); - if (aux_work && erts_thr_progress_update(NULL)) - erts_thr_progress_leader_update(NULL); + if (aux_work && erts_thr_progress_update(tpd)) + erts_thr_progress_leader_update(tpd); } if (!aux_work) { @@ -3120,7 +3131,7 @@ aux_thread(void *unused) #endif if (thr_prgr_active) - erts_thr_progress_active(NULL, thr_prgr_active = 0); + erts_thr_progress_active(tpd, thr_prgr_active = 0); #if ERTS_POLL_USE_FALLBACK @@ -3132,11 +3143,11 @@ aux_thread(void *unused) if (flgs & ERTS_SSI_FLG_SLEEPING) { ASSERT(flgs & ERTS_SSI_FLG_POLL_SLEEPING); ASSERT(flgs & ERTS_SSI_FLG_WAITING); - erts_check_io(ssi->psi); + erts_check_io(ssi->psi, ERTS_POLL_INF_TIMEOUT); } } #else - erts_thr_progress_prepare_wait(NULL); + erts_thr_progress_prepare_wait(tpd); flgs = sched_spin_wait(ssi, 0); @@ -3153,7 +3164,7 @@ aux_thread(void *unused) ERTS_MSACC_SET_STATE_CACHED(ERTS_MSACC_STATE_OTHER); } } - erts_thr_progress_finalize_wait(NULL); + erts_thr_progress_finalize_wait(tpd); #endif } @@ -3171,7 +3182,8 @@ poll_thread(void *arg) erts_aint32_t aux_work; ErtsThrPrgrCallbacks callbacks; int thr_prgr_active = 1; - struct erts_poll_thread *psi = erts_create_pollset_thread(id); + struct erts_poll_thread *psi; + ErtsThrPrgrData *tpd; ERTS_MSACC_DECLARE_CACHE(); #ifdef ERTS_ENABLE_LOCK_CHECK @@ -3192,9 +3204,12 @@ poll_thread(void *arg) callbacks.wait = thr_prgr_wait; callbacks.finalize_wait = thr_prgr_fin_wait; - erts_thr_progress_register_managed_thread(NULL, &callbacks, 0); + tpd = erts_thr_progress_register_managed_thread(NULL, &callbacks, 0); init_aux_work_data(awdp, NULL, NULL); awdp->ssi = ssi; + + psi = erts_create_pollset_thread(id, tpd); + ssi->psi = psi; sched_prep_spin_wait(ssi); @@ -3207,16 +3222,16 @@ poll_thread(void *arg) aux_work = erts_atomic32_read_acqb(&ssi->aux_work); if (aux_work) { if (!thr_prgr_active) - erts_thr_progress_active(NULL, thr_prgr_active = 1); + erts_thr_progress_active(tpd, thr_prgr_active = 1); aux_work = handle_aux_work(awdp, aux_work, 1); ERTS_MSACC_UPDATE_CACHE(); - if (aux_work && erts_thr_progress_update(NULL)) - erts_thr_progress_leader_update(NULL); + if (aux_work && erts_thr_progress_update(tpd)) + erts_thr_progress_leader_update(tpd); } if (!aux_work) { if (thr_prgr_active) - erts_thr_progress_active(NULL, thr_prgr_active = 0); + erts_thr_progress_active(tpd, thr_prgr_active = 0); flgs = sched_spin_wait(ssi, 0); @@ -3226,7 +3241,7 @@ poll_thread(void *arg) if (flgs & ERTS_SSI_FLG_SLEEPING) { ASSERT(flgs & ERTS_SSI_FLG_POLL_SLEEPING); ASSERT(flgs & ERTS_SSI_FLG_WAITING); - erts_check_io(psi); + erts_check_io(psi, ERTS_POLL_INF_TIMEOUT); } } } @@ -3236,6 +3251,78 @@ poll_thread(void *arg) return NULL; } +#if ERTS_POLL_USE_SCHEDULER_POLLING +static ERTS_INLINE void +clear_sys_scheduling(void) +{ + erts_atomic32_set_relb(&function_calls, 0); + erts_atomic32_set_mb(&doing_sys_schedule, 0); +} + +static ERTS_INLINE int +try_set_sys_scheduling(void) +{ + return 0 == erts_atomic32_cmpxchg_acqb(&doing_sys_schedule, 1, 0); +} + + +static ERTS_INLINE int +prepare_for_sys_schedule(void) +{ + while (!erts_port_task_have_outstanding_io_tasks() + && try_set_sys_scheduling()) { + if (!erts_port_task_have_outstanding_io_tasks()) + return 1; + clear_sys_scheduling(); + } + return 0; +} + +#else +#define clear_sys_scheduling() +#define prepare_for_sys_schedule() 0 +#endif + +#ifdef HARDDEBUG +#define ERTS_HDBG_CHK_SLEEP_LIST(SL, L, F, FN) \ + check_sleepers_list((SL), (L), (F), (FN)) +static void check_sleepers_list(ErtsSchedulerSleepList *sl, + int lock, + ErtsSchedulerSleepInfo *find, + ErtsSchedulerSleepInfo *find_not) +{ + ErtsSchedulerSleepInfo *last_out; + int found = 0; + + if (lock) + erts_spin_lock(&sl->lock); + + ERTS_ASSERT(!find_not || (!find_not->next && !find_not->prev)); + + last_out = sl->list; + if (last_out) { + ErtsSchedulerSleepInfo *tmp = last_out; + do { + ERTS_ASSERT(tmp->next); + ERTS_ASSERT(tmp->prev); + ERTS_ASSERT(tmp->next->prev == tmp); + ERTS_ASSERT(tmp->prev->next == tmp); + ERTS_ASSERT(tmp != find_not); + if (tmp == find) + found = !0; + tmp = tmp->next; + + } while (tmp != last_out); + } + ERTS_ASSERT(!find || found); + + if (lock) + erts_spin_unlock(&sl->lock); +} +#else +#define ERTS_HDBG_CHK_SLEEP_LIST(SL, L, F, FN) ((void) 0) +#endif + static void scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) { @@ -3249,23 +3336,29 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) ERTS_LC_ASSERT(erts_lc_runq_is_locked(rq)); - if (ERTS_RUNQ_IX_IS_DIRTY(rq->ix)) - erts_spin_lock(&rq->sleepers.lock); flgs = sched_prep_spin_wait(ssi); if (flgs & ERTS_SSI_FLG_SUSPENDED) { /* Go suspend instead... */ - if (ERTS_RUNQ_IX_IS_DIRTY(rq->ix)) - erts_spin_unlock(&rq->sleepers.lock); return; } if (ERTS_RUNQ_IX_IS_DIRTY(rq->ix)) { - ssi->prev = NULL; - ssi->next = rq->sleepers.list; - if (rq->sleepers.list) - rq->sleepers.list->prev = ssi; - rq->sleepers.list = ssi; - erts_spin_unlock(&rq->sleepers.lock); + erts_spin_lock(&rq->sleepers.lock); + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, NULL, ssi); + ASSERT(!ssi->next); /* Not in sleepers list */ + ASSERT(!ssi->prev); + if (!rq->sleepers.list) { + ssi->next = ssi->prev = ssi; + rq->sleepers.list = ssi; + } + else { + ssi->prev = rq->sleepers.list; + ssi->next = rq->sleepers.list->next; + ssi->prev->next = ssi; + ssi->next->prev = ssi; + } + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, ssi, NULL); + erts_spin_unlock(&rq->sleepers.lock); dirty_active(esdp, -1); } @@ -3286,13 +3379,13 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) aux_work = erts_atomic32_read_acqb(&ssi->aux_work); if (aux_work && !ERTS_SCHEDULER_IS_DIRTY(esdp)) { if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } aux_work = handle_aux_work(&esdp->aux_work_data, aux_work, 1); ERTS_MSACC_UPDATE_CACHE(); - if (aux_work && erts_thr_progress_update(esdp)) - erts_thr_progress_leader_update(esdp); + if (aux_work && erts_thr_progress_update(erts_thr_prgr_data(esdp))) + erts_thr_progress_leader_update(erts_thr_prgr_data(esdp)); } if (aux_work) { @@ -3301,7 +3394,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) current_time = erts_get_monotonic_time(esdp); if (current_time >= erts_next_timeout_time(esdp->next_tmo_ref)) { if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } erts_bump_timers(esdp->timer_wheel, current_time); @@ -3321,19 +3414,37 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) } if (do_timeout) { if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } } - else { + else if (!ERTS_SCHEDULER_IS_DIRTY(esdp) && prepare_for_sys_schedule()) { + /* We sleep in check_io, only for normal schedulers */ + if (thr_prgr_active) { + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 0); + sched_wall_time_change(esdp, 0); + } + flgs = sched_spin_wait(ssi, 0); + if (flgs & ERTS_SSI_FLG_SLEEPING) { + ASSERT(flgs & ERTS_SSI_FLG_WAITING); + flgs = sched_set_sleeptype(ssi, ERTS_SSI_FLG_POLL_SLEEPING); + if (flgs & ERTS_SSI_FLG_SLEEPING) { + ASSERT(flgs & ERTS_SSI_FLG_POLL_SLEEPING); + ASSERT(flgs & ERTS_SSI_FLG_WAITING); + erts_check_io(ssi->psi, timeout_time); + current_time = erts_get_monotonic_time(esdp); + } + } + *fcalls = 0; + clear_sys_scheduling(); + } else { if (!ERTS_SCHEDULER_IS_DIRTY(esdp)) { if (thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 0); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 0); sched_wall_time_change(esdp, 0); } - erts_thr_progress_prepare_wait(esdp); + erts_thr_progress_prepare_wait(erts_thr_prgr_data(esdp)); } - flgs = sched_spin_wait(ssi, spincount); if (flgs & ERTS_SSI_FLG_SLEEPING) { ASSERT(flgs & ERTS_SSI_FLG_WAITING); @@ -3363,7 +3474,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) } } if (!ERTS_SCHEDULER_IS_DIRTY(esdp)) - erts_thr_progress_finalize_wait(esdp); + erts_thr_progress_finalize_wait(erts_thr_prgr_data(esdp)); } if (!ERTS_SCHEDULER_IS_DIRTY(esdp) && current_time >= timeout_time) erts_bump_timers(esdp->timer_wheel, current_time); @@ -3389,10 +3500,30 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) (ERTS_SSI_FLG_SUSPENDED | ERTS_SSI_FLG_MSB_EXEC)); - if (ERTS_SCHEDULER_IS_DIRTY(esdp)) + if (ERTS_SCHEDULER_IS_DIRTY(esdp)) { dirty_sched_wall_time_change(esdp, working = 1); + erts_spin_lock(&rq->sleepers.lock); + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, ssi->next ? ssi : NULL, NULL); + if (ssi->next) { /* Still in list... */ + if (ssi->next == ssi) { + ASSERT(rq->sleepers.list == ssi); + ASSERT(ssi->prev == ssi); + rq->sleepers.list = NULL; + } + else { + ASSERT(ssi->prev != ssi); + if (rq->sleepers.list == ssi) + rq->sleepers.list = ssi->next; + ssi->prev->next = ssi->next; + ssi->next->prev = ssi->prev; + } + ssi->next = ssi->prev = NULL; + } + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, NULL, ssi); + erts_spin_unlock(&rq->sleepers.lock); + } else if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } @@ -3478,56 +3609,44 @@ wake_scheduler(ErtsRunQueue *rq) } static void -wake_dirty_schedulers(ErtsRunQueue *rq, int one) +wake_dirty_scheduler(ErtsRunQueue *rq) { - ErtsSchedulerSleepInfo *ssi; + ErtsSchedulerSleepInfo *lo_ssi, *fo_ssi; ErtsSchedulerSleepList *sl; ASSERT(ERTS_RUNQ_IX_IS_DIRTY(rq->ix)); sl = &rq->sleepers; erts_spin_lock(&sl->lock); - ssi = sl->list; - if (!ssi) { + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, NULL, NULL); + lo_ssi = sl->list; + if (!lo_ssi) { erts_spin_unlock(&sl->lock); - if (one) - wake_scheduler(rq); - } else if (one) { + wake_scheduler(rq); + } + else { erts_aint32_t flgs; - if (ssi->prev) - ssi->prev->next = ssi->next; - else { - ASSERT(sl->list == ssi); - sl->list = ssi->next; + fo_ssi = lo_ssi->next; + ASSERT(fo_ssi->prev == lo_ssi); + if (fo_ssi == lo_ssi) { + ASSERT(lo_ssi->prev == lo_ssi); + sl->list = NULL; + } + else { + ASSERT(lo_ssi->prev != lo_ssi); + lo_ssi->next = fo_ssi->next; + fo_ssi->next->prev = fo_ssi->prev; } - if (ssi->next) - ssi->next->prev = ssi->prev; - - erts_spin_unlock(&sl->lock); - - ERTS_THR_MEMORY_BARRIER; - flgs = ssi_flags_set_wake(ssi); - erts_sched_finish_poke(ssi, flgs); - } else { - sl->list = NULL; + fo_ssi->next = fo_ssi->prev = NULL; + ERTS_HDBG_CHK_SLEEP_LIST(&rq->sleepers, 0, NULL, fo_ssi); erts_spin_unlock(&sl->lock); ERTS_THR_MEMORY_BARRIER; - do { - ErtsSchedulerSleepInfo *wake_ssi = ssi; - ssi = ssi->next; - erts_sched_finish_poke(wake_ssi, ssi_flags_set_wake(wake_ssi)); - } while (ssi); + flgs = ssi_flags_set_wake(fo_ssi); + erts_sched_finish_poke(fo_ssi, flgs); } } -static void -wake_dirty_scheduler(ErtsRunQueue *rq) -{ - wake_dirty_schedulers(rq, 1); -} - - #define ERTS_NO_USED_RUNQS_SHIFT 16 #define ERTS_NO_RUNQS_MASK 0xffffU @@ -3761,6 +3880,8 @@ dequeue_process(ErtsRunQueue *runq, int prio_q, erts_aint32_t *statep) ERTS_THR_DATA_DEPENDENCY_READ_MEMORY_BARRIER; state = erts_atomic32_read_nob(&p->state); + ASSERT(state & ERTS_PSFLG_IN_RUNQ); + if (statep) *statep = state; @@ -3768,8 +3889,7 @@ dequeue_process(ErtsRunQueue *runq, int prio_q, erts_aint32_t *statep) rqi = &runq->procs.prio_info[prio]; - if (p) - unqueue_process(runq, rpq, rqi, prio, NULL, p); + unqueue_process(runq, rpq, rqi, prio, NULL, p); return p; } @@ -4088,7 +4208,7 @@ evacuate_run_queue(ErtsRunQueue *rq, erts_runq_unlock(to_rq); smp_notify_inc_runq(to_rq); - erts_runq_lock(to_rq); + erts_runq_lock(rq); } if (rq->ports.start) { @@ -4157,22 +4277,17 @@ evacuate_run_queue(ErtsRunQueue *rq, free_proxy_proc(proc); else { erts_aint32_t clr_bits; -#ifdef DEBUG - erts_aint32_t old; -#endif clr_bits = ERTS_PSFLG_IN_RUNQ; clr_bits |= qbit << ERTS_PSFLGS_IN_PRQ_MASK_OFFSET; -#ifdef DEBUG - old = -#else - (void) -#endif - erts_atomic32_read_band_mb(&proc->state, - ~clr_bits); - ASSERT((old & clr_bits) == clr_bits); + state = erts_atomic32_read_band_mb(&proc->state, ~clr_bits); + ASSERT((state & clr_bits) == clr_bits); + if (state & ERTS_PSFLG_FREE) { + /* free and not queued by proxy */ + erts_proc_dec_refc(proc); + } } goto handle_next_proc; @@ -5122,7 +5237,6 @@ erts_fprintf(stderr, "--------------------------------\n"); rq->out_of_work_count = 0; (void) ERTS_RUNQ_FLGS_READ_BSET(rq, ERTS_RUNQ_FLGS_MIGRATION_INFO, flags); - rq->max_len = erts_atomic32_read_dirty(&rq->len); for (pix = 0; pix < ERTS_NO_PRIO_LEVELS; pix++) { ErtsRunQueueInfo *rqi; @@ -5561,7 +5675,6 @@ erts_sched_set_busy_wait_threshold(ErtsSchedType sched_type, char *str) return EINVAL; } - params->sys_schedule = sys_sched; params->tse = sys_sched * ERTS_SCHED_TSE_SLEEP_SPINCOUNT_FACT; params->aux_work = sys_sched * aux_work_fact; @@ -5772,6 +5885,10 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online, int no_poll_th size_runqs = sizeof(ErtsAlignedRunQueue) * tot_rqs; erts_aligned_run_queues = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_RUNQS, size_runqs); +#if ERTS_POLL_USE_SCHEDULER_POLLING + erts_atomic32_init_nob(&doing_sys_schedule, 0); + erts_atomic32_init_nob(&function_calls, 0); +#endif erts_atomic32_init_nob(&no_empty_run_queues, 0); erts_no_run_queues = n; @@ -5886,6 +6003,8 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online, int no_poll_th for (ix = 0; ix < no_dirty_cpu_schedulers; ix++) { ErtsSchedulerSleepInfo *ssi = &aligned_dirty_cpu_sched_sleep_info[ix].ssi; erts_atomic32_init_nob(&ssi->flags, 0); + ssi->next = NULL; + ssi->prev = NULL; ssi->event = NULL; /* initialized in sched_dirty_cpu_thread_func */ erts_atomic32_init_nob(&ssi->aux_work, 0); } @@ -5896,6 +6015,8 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online, int no_poll_th for (ix = 0; ix < no_dirty_io_schedulers; ix++) { ErtsSchedulerSleepInfo *ssi = &aligned_dirty_io_sched_sleep_info[ix].ssi; erts_atomic32_init_nob(&ssi->flags, 0); + ssi->next = NULL; + ssi->prev = NULL; ssi->event = NULL; /* initialized in sched_dirty_io_thread_func */ erts_atomic32_init_nob(&ssi->aux_work, 0); } @@ -6208,13 +6329,14 @@ fin_dirty_enq_s_change(Process *p, /* Already enqueue by someone else... */ if (pstruct_reserved) { /* We reserved process struct for enqueue; clear it... */ -#ifdef DEBUG - erts_aint32_t old = -#else - (void) -#endif - erts_atomic32_read_band_nob(&p->state, ~ERTS_PSFLG_IN_RUNQ); - ASSERT(old & ERTS_PSFLG_IN_RUNQ); + erts_aint32_t state; + + state = erts_atomic32_read_band_nob(&p->state, ~ERTS_PSFLG_IN_RUNQ); + ASSERT(state & ERTS_PSFLG_IN_RUNQ); + + if (state & ERTS_PSFLG_FREE) { + erts_proc_dec_refc(p); + } } return 0; } @@ -6407,8 +6529,9 @@ schedule_out_process(ErtsRunQueue *c_rq, erts_aint32_t state, Process *p, == 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) { + if ((!!(a & (ERTS_PSFLG_ACTIVE_SYS|ERTS_PSFLG_DIRTY_ACTIVE_SYS)) + | ((a & (ERTS_PSFLG_ACTIVE|ERTS_PSFLG_SUSPENDED)) == ERTS_PSFLG_ACTIVE)) + & !(a & ERTS_PSFLG_FREE)) { enqueue = check_enqueue_in_prio_queue(p, &enq_prio, &n, a); } a = erts_atomic32_cmpxchg_mb(&p->state, n, e); @@ -6655,62 +6778,72 @@ erts_schedule_process(Process *p, erts_aint32_t state, ErtsProcLocks locks) schedule_process(p, state, locks); } +/* Enqueues the given sys task on the process and schedules it. The task may be + * NULL if only scheduling is desired. */ 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; +active_sys_enqueue(Process *p, ErtsProcSysTask *sys_task, + erts_aint32_t task_prio, erts_aint32_t enable_flags, + erts_aint32_t state, erts_aint32_t *fail_state_p) +{ + int runnable_procs = erts_system_profile_flags.runnable_procs; + erts_aint32_t n, a, enq_prio, fail_state; + int already_scheduled; + int 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; - } - } + enable_flags |= ERTS_PSFLG_ACTIVE_SYS; + fail_state = *fail_state_p; + already_scheduled = 0; + status_locked = 0; + enq_prio = -1; + a = state; + ERTS_LC_ASSERT(!(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p))); + ASSERT(fail_state & (ERTS_PSFLG_EXITING | ERTS_PSFLG_FREE)); + ASSERT(!(fail_state & enable_flags)); ASSERT(!(state & ERTS_PSFLG_PROXY)); + /* When runnable_procs is enabled, we need to take the status lock to + * prevent trace messages from being sent in the wrong order. The lock must + * be held over the call to add2runq. + * + * Otherwise, we only need to take it when we're enqueuing a task and can + * safely release it before add2runq. */ + if (sys_task || runnable_procs) { + erts_proc_lock(p, ERTS_PROC_LOCK_STATUS); + status_locked = 1; + } + while (1) { erts_aint32_t e; n = e = a; - if (a & ERTS_PSFLG_FREE) - goto cleanup; /* We don't want to schedule free processes... */ + if (a & fail_state) { + *fail_state_p = a & fail_state; + goto cleanup; + } enqueue = ERTS_ENQUEUE_NOT; - n |= enable_flags; - n |= ERTS_PSFLG_ACTIVE_SYS; + n |= enable_flags; + if (!(a & (ERTS_PSFLG_RUNNING | ERTS_PSFLG_RUNNING_SYS | ERTS_PSFLG_DIRTY_RUNNING - | ERTS_PSFLG_DIRTY_RUNNING_SYS))) + | 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) + if (a == e) { break; - if (a == n && enqueue == ERTS_ENQUEUE_NOT) - goto cleanup; + } + else if (a == n && enqueue == ERTS_ENQUEUE_NOT) { + already_scheduled = 1; + break; + } } - if (prof_runnable_procs) { - + if (!already_scheduled && runnable_procs) { if (!(a & (ERTS_PSFLG_ACTIVE_SYS | ERTS_PSFLG_RUNNING | ERTS_PSFLG_RUNNING_SYS @@ -6720,19 +6853,56 @@ active_sys_enqueue(Process *p, erts_aint32_t state, /* 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); + if (sys_task) { + ErtsProcSysTaskQs *stqs = p->sys_task_qs; -cleanup: + if (!stqs) { + sys_task->next = sys_task->prev = sys_task; - if (slocked) - erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS); + stqs = proc_sys_task_queues_alloc(); - ERTS_LC_ASSERT(!(ERTS_PROC_LOCK_STATUS & erts_proc_lc_my_proc_locks(p))); + stqs->qmask = 1 << task_prio; + stqs->ncount = 0; + stqs->q[PRIORITY_MAX] = NULL; + stqs->q[PRIORITY_HIGH] = NULL; + stqs->q[PRIORITY_NORMAL] = NULL; + stqs->q[PRIORITY_LOW] = NULL; + stqs->q[task_prio] = sys_task; + + p->sys_task_qs = stqs; + } + else { + if (!stqs->q[task_prio]) { + sys_task->next = sys_task->prev = sys_task; + + stqs->q[task_prio] = sys_task; + stqs->qmask |= 1 << task_prio; + } + else { + sys_task->next = stqs->q[task_prio]; + sys_task->prev = stqs->q[task_prio]->prev; + sys_task->next->prev = sys_task; + sys_task->prev->next = sys_task; + ASSERT(stqs->qmask & (1 << task_prio)); + } + } + } + + if (status_locked && !runnable_procs) { + erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS); + status_locked = 0; + } + + if (!already_scheduled) { + add2runq(enqueue, enq_prio, p, n, NULL); + } + +cleanup: + if (status_locked) { + erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS); + } return n; } @@ -6740,103 +6910,41 @@ cleanup: 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); + erts_aint32_t fail_state = ERTS_PSFLG_FREE; + + return active_sys_enqueue(p, NULL, 0, enable_flag, state, &fail_state); } static int schedule_process_sys_task(Process *p, erts_aint32_t prio, ErtsProcSysTask *st, erts_aint32_t *fail_state_p) { - int res; - int locked; - ErtsProcSysTaskQs *stqs, *free_stqs; 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 */ + /* Elevate priority if needed. */ state = erts_atomic32_read_nob(&p->state); - locked = 0; - free_stqs = NULL; - if (state & ERTS_PSFLG_SYS_TASKS) - stqs = NULL; - else { - alloc_qs: - stqs = proc_sys_task_queues_alloc(); - stqs->qmask = 1 << prio; - stqs->ncount = 0; - stqs->q[PRIORITY_MAX] = NULL; - stqs->q[PRIORITY_HIGH] = NULL; - stqs->q[PRIORITY_NORMAL] = NULL; - stqs->q[PRIORITY_LOW] = NULL; - stqs->q[prio] = st; - } - - if (!locked) { - locked = 1; - erts_proc_lock(p, ERTS_PROC_LOCK_STATUS); - - 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; - goto cleanup; - } - } - - if (!p->sys_task_qs) { - if (stqs) - p->sys_task_qs = stqs; - else - goto alloc_qs; - } - else { - free_stqs = stqs; - stqs = p->sys_task_qs; - if (!stqs->q[prio]) { - stqs->q[prio] = st; - stqs->qmask |= 1 << prio; - } - else { - st->next = stqs->q[prio]; - st->prev = stqs->q[prio]->prev; - st->next->prev = st; - st->prev->next = st; - ASSERT(stqs->qmask & (1 << prio)); - } - } - if (ERTS_PSFLGS_GET_ACT_PRIO(state) > prio) { - erts_aint32_t n, a, e; - /* Need to elevate actual prio */ + erts_aint32_t n, a, e; - a = state; - do { - if (ERTS_PSFLGS_GET_ACT_PRIO(a) <= prio) { - n = a; - break; - } - n = e = a; - n &= ~ERTS_PSFLGS_ACT_PRIO_MASK; - n |= (prio << ERTS_PSFLGS_ACT_PRIO_OFFSET); - a = erts_atomic32_cmpxchg_nob(&p->state, n, e); - } while (a != e); - state = n; - } - - /* active_sys_enqueue() always return with status lock unlocked */ - (void) active_sys_enqueue(p, state, ERTS_PSFLG_SYS_TASKS, locked); + a = state; + do { + if (ERTS_PSFLGS_GET_ACT_PRIO(a) <= prio) { + n = a; + break; + } + n = e = a; + n &= ~ERTS_PSFLGS_ACT_PRIO_MASK; + n |= (prio << ERTS_PSFLGS_ACT_PRIO_OFFSET); + a = erts_atomic32_cmpxchg_nob(&p->state, n, e); + } while (a != e); -cleanup: + state = n; + } - if (free_stqs) - proc_sys_task_queues_free(free_stqs); + fail_state = *fail_state_p; - return res; + return !(active_sys_enqueue(p, st, prio, ERTS_PSFLG_SYS_TASKS, + state, fail_state_p) & fail_state); } static ERTS_INLINE int @@ -7428,7 +7536,13 @@ suspend_scheduler(ErtsSchedulerData *esdp) return; } +#ifdef HARDDEBUG + if (sched_type != ERTS_SCHED_NORMAL) + ERTS_HDBG_CHK_SLEEP_LIST(&esdp->run_queue->sleepers, !0, NULL, ssi); +#endif + if (erts_atomic32_read_nob(&ssi->flags) & ERTS_SSI_FLG_MSB_EXEC) { + ASSERT(no == 1); if (!msb_scheduler_type_switch(sched_type, esdp, no)) return; @@ -7582,7 +7696,8 @@ suspend_scheduler(ErtsSchedulerData *esdp) if (aux_work|evacuate) { if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), + thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } if (aux_work) @@ -7590,8 +7705,8 @@ suspend_scheduler(ErtsSchedulerData *esdp) aux_work, 1); - if (aux_work && erts_thr_progress_update(esdp)) - erts_thr_progress_leader_update(esdp); + if (aux_work && erts_thr_progress_update(erts_thr_prgr_data(esdp))) + erts_thr_progress_leader_update(erts_thr_prgr_data(esdp)); if (evacuate) { erts_runq_lock(esdp->run_queue); evacuate_run_queue(esdp->run_queue, &sbp); @@ -7610,18 +7725,18 @@ suspend_scheduler(ErtsSchedulerData *esdp) if (!aux_work && current_time < timeout_time) { /* go to sleep... */ if (thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 0); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 0); sched_wall_time_change(esdp, 0); } - erts_thr_progress_prepare_wait(NULL); + erts_thr_progress_prepare_wait(erts_thr_prgr_data(NULL)); suspend_normal_scheduler_sleep(esdp); - erts_thr_progress_finalize_wait(NULL); + erts_thr_progress_finalize_wait(erts_thr_prgr_data(NULL)); current_time = erts_get_monotonic_time(esdp); } if (current_time >= timeout_time) { if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } erts_bump_timers(esdp->timer_wheel, current_time); @@ -7678,7 +7793,7 @@ suspend_scheduler(ErtsSchedulerData *esdp) profile_scheduler(make_small(esdp->no), am_active); if (!thr_prgr_active) { - erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_thr_progress_active(erts_thr_prgr_data(esdp), thr_prgr_active = 1); sched_wall_time_change(esdp, 1); } } @@ -8313,6 +8428,11 @@ sched_thread_func(void *vesdp) erts_msacc_init_thread("scheduler", no, 1); erts_thr_progress_register_managed_thread(esdp, &callbacks, 0); + +#if ERTS_POLL_USE_SCHEDULER_POLLING + esdp->ssi->psi = erts_create_pollset_thread(-1, NULL); +#endif + erts_alloc_register_scheduler(vesdp); #ifdef ERTS_ENABLE_LOCK_CHECK { @@ -9096,6 +9216,9 @@ unlock_lock_rq(int pre_free, void *vrq) } +static void trace_schedule_in(Process *p, erts_aint32_t state); +static void trace_schedule_out(Process *p, erts_aint32_t state); + /* * schedule() is called from BEAM (process_main()) or HiPE * (hipe_mode_switch()) when the current process is to be @@ -9119,7 +9242,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) Process *proxy_p = NULL; ErtsRunQueue *rq; int context_reds; - int fcalls; + int fcalls = 0; int actual_reds; int reds; Uint32 flags; @@ -9193,6 +9316,10 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) reds = ERTS_PROC_MIN_CONTEXT_SWITCH_REDS_COST; esdp->virtual_reds = 0; +#if ERTS_POLL_USE_SCHEDULER_POLLING + fcalls = (int) erts_atomic32_add_read_acqb(&function_calls, reds); +#endif + ASSERT(esdp && esdp == erts_get_scheduler_data()); rq = erts_get_runq_current(esdp); @@ -9201,22 +9328,8 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) state = erts_atomic32_read_nob(&p->state); - if (IS_TRACED(p)) { - if (IS_TRACED_FL(p, F_TRACE_CALLS) && !(state & ERTS_PSFLG_FREE)) - erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_OUT); - if ((state & (ERTS_PSFLG_FREE|ERTS_PSFLG_EXITING)) == ERTS_PSFLG_EXITING) { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) - trace_sched(p, ERTS_PROC_LOCK_MAIN, - ((state & ERTS_PSFLG_FREE) - ? am_out_exited - : am_out_exiting)); - } - else { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || - ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) - trace_sched(p, ERTS_PROC_LOCK_MAIN, am_out); - } - } + if (IS_TRACED(p)) + trace_schedule_out(p, state); erts_proc_lock(p, ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); @@ -9341,12 +9454,12 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) } } - leader_update = erts_thr_progress_update(esdp); + leader_update = erts_thr_progress_update(erts_thr_prgr_data(esdp)); aux_work = erts_atomic32_read_acqb(&esdp->ssi->aux_work); if (aux_work | leader_update) { erts_runq_unlock(rq); if (leader_update) - erts_thr_progress_leader_update(esdp); + erts_thr_progress_leader_update(erts_thr_prgr_data(esdp)); if (aux_work) handle_aux_work(&esdp->aux_work_data, aux_work, 0); erts_runq_lock(rq); @@ -9361,6 +9474,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) if (!is_normal_sched & !!(flags & ERTS_RUNQ_FLG_HALTING)) { /* Wait for emulator to terminate... */ + erts_runq_unlock(rq); while (1) erts_milli_sleep(1000*1000); } @@ -9423,7 +9537,33 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) non_empty_runq(rq); goto check_activities_to_run; - } + } else if (is_normal_sched && + fcalls > (2 * context_reds) && + prepare_for_sys_schedule()) { + ErtsMonotonicTime current_time; + /* + * Schedule system-level activities. + */ + + ERTS_MSACC_PUSH_STATE_CACHED_M(); + + erts_runq_unlock(rq); + + ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_CHECK_IO); + LTTNG2(scheduler_poll, esdp->no, 1); + + erts_check_io(esdp->ssi->psi, ERTS_POLL_NO_TIMEOUT); + ERTS_MSACC_POP_STATE_M(); + + current_time = erts_get_monotonic_time(esdp); + if (current_time >= erts_next_timeout_time(esdp->next_tmo_ref)) + erts_bump_timers(esdp->timer_wheel, current_time); + + erts_runq_lock(rq); + fcalls = 0; + clear_sys_scheduling(); + goto continue_check_activities_to_run; + } if (flags & ERTS_RUNQ_FLG_MISC_OP) exec_misc_ops(rq); @@ -9563,6 +9703,7 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) } else if (state & ERTS_PSFLG_FREE) { /* free and not queued by proxy */ + ASSERT(state & ERTS_PSFLG_IN_RUNQ); erts_proc_dec_refc(p); } if (!is_normal_sched) @@ -9622,10 +9763,12 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) ASSERT(!p->scheduler_data); p->scheduler_data = esdp; if ((!!(state & ERTS_PSFLGS_DIRTY_WORK)) - & (!(state & ERTS_PSFLG_ACTIVE_SYS))) { + & (!(state & ERTS_PSFLG_RUNNING_SYS))) { /* Migrate to dirty scheduler... */ sunlock_sched_out_proc: erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS); + if (IS_TRACED(p)) + trace_schedule_in(p, state); goto sched_out_proc; } } @@ -9659,29 +9802,14 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) erts_proc_unlock(p, ERTS_PROC_LOCK_STATUS); - /* Clear tracer if it has been removed */ - if (IS_TRACED(p) && erts_is_tracer_proc_enabled( - p, ERTS_PROC_LOCK_MAIN, &p->common)) { - - if (state & ERTS_PSFLG_EXITING) { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) - trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in_exiting); - } - else { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || - ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) - trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in); - } - if (IS_TRACED_FL(p, F_TRACE_CALLS)) { - erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_IN); - } - } + if (IS_TRACED(p)) + trace_schedule_in(p, state); if (is_normal_sched) { if (state & ERTS_PSFLG_RUNNING_SYS) { if (state & (ERTS_PSFLG_SIG_Q|ERTS_PSFLG_SIG_IN_Q)) { int local_only = (!!(p->flags & F_LOCAL_SIGS_ONLY) - & !(state & ERTS_PSFLG_SUSPENDED)); + & !(state & (ERTS_PSFLG_SUSPENDED|ERTS_PSFLGS_DIRTY_WORK))); if (!local_only | !!(state & ERTS_PSFLG_SIG_Q)) { int sig_reds; /* @@ -9839,6 +9967,53 @@ Process *erts_schedule(ErtsSchedulerData *esdp, Process *p, int calls) } } +static void +trace_schedule_in(Process *p, erts_aint32_t state) +{ + ASSERT(IS_TRACED(p)); + ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(p) == ERTS_PROC_LOCK_MAIN); + + /* Clear tracer if it has been removed */ + if (erts_is_tracer_proc_enabled(p, ERTS_PROC_LOCK_MAIN, &p->common)) { + + if (state & ERTS_PSFLG_EXITING) { + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in_exiting); + } + else { + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || + ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in); + } + if (IS_TRACED_FL(p, F_TRACE_CALLS)) + erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_IN); + } + +} + +static void +trace_schedule_out(Process *p, erts_aint32_t state) +{ + ASSERT(IS_TRACED(p)); + ERTS_LC_ASSERT(erts_proc_lc_my_proc_locks(p) == ERTS_PROC_LOCK_MAIN); + + if (IS_TRACED_FL(p, F_TRACE_CALLS) && !(state & ERTS_PSFLG_FREE)) + erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_OUT); + + if ((state & (ERTS_PSFLG_FREE|ERTS_PSFLG_EXITING)) == ERTS_PSFLG_EXITING) { + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, + ((state & ERTS_PSFLG_FREE) + ? am_out_exited + : am_out_exiting)); + } + else { + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || + ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_out); + } +} + static int notify_sys_task_executed(Process *c_p, ErtsProcSysTask *st, Eterm st_result, int normal_sched) @@ -9890,6 +10065,7 @@ notify_sys_task_executed(Process *c_p, ErtsProcSysTask *st, ASSERT(hp_start + hsz == hp); #endif + ERL_MESSAGE_TOKEN(mp) = am_undefined; erts_queue_proc_message(c_p, rp, rp_locks, mp, msg); if (c_p == rp) @@ -12906,10 +13082,10 @@ void erts_halt(int code) if (-1 == erts_atomic32_cmpxchg_acqb(&erts_halt_progress, erts_no_schedulers, -1)) { + notify_reap_ports_relb(); ERTS_RUNQ_FLGS_SET(ERTS_DIRTY_CPU_RUNQ, ERTS_RUNQ_FLG_HALTING); ERTS_RUNQ_FLGS_SET(ERTS_DIRTY_IO_RUNQ, ERTS_RUNQ_FLG_HALTING); erts_halt_code = code; - notify_reap_ports_relb(); } } |