diff options
Diffstat (limited to 'erts/emulator/beam/erl_process.c')
-rw-r--r-- | erts/emulator/beam/erl_process.c | 2346 |
1 files changed, 1639 insertions, 707 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index d8aed63544..138acfeb2c 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2011. All Rights Reserved. + * Copyright Ericsson AB 1996-2012. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -39,6 +39,9 @@ #include "erl_binary.h" #include "beam_bp.h" #include "erl_cpu_topology.h" +#include "erl_thr_progress.h" +#include "erl_thr_queue.h" +#include "erl_async.h" #define ERTS_RUNQ_CHECK_BALANCE_REDS_PER_SCHED (2000*CONTEXT_REDS) #define ERTS_RUNQ_CALL_CHECK_BALANCE_REDS \ @@ -111,6 +114,7 @@ static Sint p_serial; static Uint p_serial_mask; static Uint p_serial_shift; +int erts_sched_compact_load; Uint erts_no_schedulers; Uint erts_max_processes = ERTS_DEFAULT_MAX_PROCESSES; Uint erts_process_tab_index_mask; @@ -124,9 +128,10 @@ ErtsLcPSDLocks erts_psd_required_locks[ERTS_PSD_SIZE]; #endif #ifdef ERTS_SMP - int erts_disable_proc_not_running_opt; +static ErtsAuxWorkData *aux_thread_aux_work_data; + #define ERTS_SCHDLR_SSPND_CHNG_WAITER (((erts_aint32_t) 1) << 0) #define ERTS_SCHDLR_SSPND_CHNG_MSB (((erts_aint32_t) 1) << 1) #define ERTS_SCHDLR_SSPND_CHNG_ONLN (((erts_aint32_t) 1) << 2) @@ -134,15 +139,15 @@ int erts_disable_proc_not_running_opt; #ifndef DEBUG #define ERTS_SCHDLR_SSPND_CHNG_SET(VAL, OLD_VAL) \ - erts_smp_atomic32_set(&schdlr_sspnd.changing, (VAL)) + erts_smp_atomic32_set_nob(&schdlr_sspnd.changing, (VAL)) #else #define ERTS_SCHDLR_SSPND_CHNG_SET(VAL, OLD_VAL) \ do { \ erts_aint32_t old_val__; \ - old_val__ = erts_smp_atomic32_xchg(&schdlr_sspnd.changing, \ - (VAL)); \ + old_val__ = erts_smp_atomic32_xchg_nob(&schdlr_sspnd.changing, \ + (VAL)); \ ASSERT(old_val__ == (OLD_VAL)); \ } while (0) @@ -158,7 +163,7 @@ static struct { erts_smp_atomic32_t changing; erts_smp_atomic32_t active; struct { - erts_smp_atomic32_t ongoing; + int ongoing; long wait_active; ErtsProcList *procs; } msb; /* Multi Scheduling Block */ @@ -191,8 +196,6 @@ do { \ erts_sched_stat_t erts_sched_stat; -ErtsRunQueue *erts_common_run_queue; - #ifdef USE_THREADS static erts_tsd_key_t sched_data_key; #endif @@ -213,8 +216,6 @@ Uint erts_no_run_queues; ErtsAlignedSchedulerData *erts_aligned_scheduler_data; -#ifdef ERTS_SMP - typedef union { ErtsSchedulerSleepInfo ssi; char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsSchedulerSleepInfo))]; @@ -222,18 +223,11 @@ typedef union { static ErtsAlignedSchedulerSleepInfo *aligned_sched_sleep_info; -#endif - -#ifndef BM_COUNTERS -static int processes_busy; -#endif - Process** process_tab; static Uint last_reductions; static Uint last_exact_reductions; Uint erts_default_process_flags; Eterm erts_system_monitor; -Eterm erts_system_monitor_msg_queue_len; Eterm erts_system_monitor_long_gc; Eterm erts_system_monitor_large_heap; struct erts_system_monitor_flags_t erts_system_monitor_flags; @@ -285,8 +279,9 @@ ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(proclist, ERTS_ALC_T_PROC_LIST) #define ERTS_SCHED_SLEEP_INFO_IX(IX) \ - (ASSERT_EXPR(0 <= (IX) && (IX) < erts_no_schedulers), \ - &aligned_sched_sleep_info[(IX)].ssi) + (ASSERT_EXPR(-1 <= ((int) (IX)) \ + && ((int) (IX)) < ((int) erts_no_schedulers)), \ + &aligned_sched_sleep_info[(IX)].ssi) #define ERTS_FOREACH_RUNQ(RQVAR, DO) \ do { \ @@ -339,6 +334,51 @@ static void exec_misc_ops(ErtsRunQueue *); static void print_function_from_pc(int to, void *to_arg, BeamInstr* x); static int stack_element_dump(int to, void *to_arg, Process* p, Eterm* sp, int yreg); + +static void aux_work_timeout(void *unused); +static void aux_work_timeout_early_init(int no_schedulers); +static void aux_work_timeout_late_init(void); +static void setup_aux_work_timer(void); + +#if defined(DEBUG) || 0 +#define ERTS_DBG_CHK_AUX_WORK_VAL(V) dbg_chk_aux_work_val((V)) +static void +dbg_chk_aux_work_val(erts_aint32_t value) +{ + erts_aint32_t valid = 0; + + valid |= ERTS_SSI_AUX_WORK_SET_TMO; + valid |= ERTS_SSI_AUX_WORK_MISC; + valid |= ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM; + valid |= ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC; +#if ERTS_USE_ASYNC_READY_Q + valid |= ERTS_SSI_AUX_WORK_ASYNC_READY; + valid |= ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN; +#endif +#ifdef ERTS_SMP + valid |= ERTS_SSI_AUX_WORK_MISC_THR_PRGR; + valid |= ERTS_SSI_AUX_WORK_DD; + valid |= ERTS_SSI_AUX_WORK_DD_THR_PRGR; +#endif +#if HAVE_ERTS_MSEG + valid |= ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK; +#endif +#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN + valid |= ERTS_SSI_AUX_WORK_CHECK_CHILDREN; +#endif + + if (~valid & value) + erl_exit(ERTS_ABORT_EXIT, + "Invalid aux_work value found: 0x%x\n", + ~valid & value); +} +#define ERTS_DBG_CHK_SSI_AUX_WORK(SSI) \ + ERTS_DBG_CHK_AUX_WORK_VAL(erts_atomic32_read_nob(&(SSI)->aux_work)) +#else +#define ERTS_DBG_CHK_AUX_WORK_VAL(V) +#define ERTS_DBG_CHK_SSI_AUX_WORK(SSI) +#endif + #ifdef ERTS_SMP static void handle_pending_exiters(ErtsProcList *); @@ -410,7 +450,7 @@ erts_init_process(int ncpu) init_proclist_alloc(); - erts_smp_atomic32_init(&process_count, 0); + erts_smp_atomic32_init_nob(&process_count, 0); if (erts_use_r9_pids_ports) { proc_bits = ERTS_R9_PROC_BITS; @@ -435,9 +475,6 @@ erts_init_process(int ncpu) p_serial_shift = erts_fit_in_bits(erts_max_processes - 1); p_serial_mask = ((~(~((Uint) 0) << proc_bits)) >> p_serial_shift); erts_process_tab_index_mask = ~(~((Uint) 0) << p_serial_shift); -#ifndef BM_COUNTERS - processes_busy = 0; -#endif last_reductions = 0; last_exact_reductions = 0; erts_default_process_flags = 0; @@ -484,6 +521,209 @@ erts_late_init_process(void) } +static void +init_sched_wall_time(ErtsSchedWallTime *swtp) +{ + swtp->enabled = 0; + swtp->start = 0; + swtp->working.total = 0; + swtp->working.start = 0; + swtp->working.currently = 0; +} + +static ERTS_INLINE Uint64 +sched_wall_time_ts(void) +{ +#ifdef HAVE_GETHRTIME + return (Uint64) sys_gethrtime(); +#else + Uint64 res; + SysTimeval tv; + sys_gettimeofday(&tv); + res = (Uint64) tv.tv_sec*1000000; + res += (Uint64) tv.tv_usec; + return res; +#endif +} + +static ERTS_INLINE void +sched_wall_time_change(ErtsSchedulerData *esdp, int working) +{ + if (esdp->sched_wall_time.enabled) { + Uint64 ts = sched_wall_time_ts(); + if (working) { +#ifdef DEBUG + ASSERT(!esdp->sched_wall_time.working.currently); + esdp->sched_wall_time.working.currently = 1; +#endif + ts -= esdp->sched_wall_time.start; + esdp->sched_wall_time.working.start = ts; + } + else { +#ifdef DEBUG + ASSERT(esdp->sched_wall_time.working.currently); + esdp->sched_wall_time.working.currently = 0; +#endif + ts -= esdp->sched_wall_time.start; + ts -= esdp->sched_wall_time.working.start; + esdp->sched_wall_time.working.total += ts; + } + } +} + +typedef struct { + int set; + int enable; + Process *proc; + Eterm ref; + Eterm ref_heap[REF_THING_SIZE]; + Uint req_sched; + erts_smp_atomic32_t refc; +} ErtsSchedWallTimeReq; + +#if !HALFWORD_HEAP +ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(swtreq, + ErtsSchedWallTimeReq, + 5, + ERTS_ALC_T_SCHED_WTIME_REQ) +#else +static ERTS_INLINE ErtsSchedWallTimeReq * +swtreq_alloc(void) +{ + return erts_alloc(ERTS_ALC_T_SCHED_WTIME_REQ, + sizeof(ErtsSchedWallTimeReq)); +} + +static ERTS_INLINE void +swtreq_free(ErtsSchedWallTimeReq *ptr) +{ + erts_free(ERTS_ALC_T_SCHED_WTIME_REQ, ptr); +} +#endif + +static void +reply_sched_wall_time(void *vswtrp) +{ + Uint64 working = 0, total = 0; + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + ErtsSchedWallTimeReq *swtrp = (ErtsSchedWallTimeReq *) vswtrp; + ErtsProcLocks rp_locks = (swtrp->req_sched == esdp->no + ? ERTS_PROC_LOCK_MAIN + : 0); + Process *rp = swtrp->proc; + Eterm ref_copy = NIL, msg; + Eterm *hp = NULL; + Eterm **hpp; + Uint sz, *szp; + ErlOffHeap *ohp = NULL; + ErlHeapFragment *bp = NULL; + + ASSERT(esdp); + + if (swtrp->set) { + if (!swtrp->enable && esdp->sched_wall_time.enabled) + esdp->sched_wall_time.enabled = 0; + else if (swtrp->enable && !esdp->sched_wall_time.enabled) { + Uint64 ts = sched_wall_time_ts(); + esdp->sched_wall_time.enabled = 1; + esdp->sched_wall_time.start = ts; + esdp->sched_wall_time.working.total = 0; + esdp->sched_wall_time.working.start = 0; + esdp->sched_wall_time.working.currently = 1; + } + } + + if (esdp->sched_wall_time.enabled) { + Uint64 ts = sched_wall_time_ts(); + ASSERT(esdp->sched_wall_time.working.currently); + ts -= esdp->sched_wall_time.start; + total = ts; + ts -= esdp->sched_wall_time.working.start; + working = esdp->sched_wall_time.working.total + ts; + } + + sz = 0; + hpp = NULL; + szp = &sz; + + while (1) { + if (hpp) + ref_copy = STORE_NC(hpp, ohp, swtrp->ref); + else + *szp += REF_THING_SIZE; + + if (swtrp->set) + msg = ref_copy; + else { + msg = (!esdp->sched_wall_time.enabled + ? am_notsup + : erts_bld_tuple(hpp, szp, 3, + make_small(esdp->no), + erts_bld_uint64(hpp, szp, working), + erts_bld_uint64(hpp, szp, total))); + + msg = erts_bld_tuple(hpp, szp, 2, ref_copy, msg); + } + if (hpp) + break; + + hp = erts_alloc_message_heap(sz, &bp, &ohp, rp, &rp_locks); + szp = NULL; + hpp = &hp; + } + + erts_queue_message(rp, &rp_locks, bp, msg, NIL); + + if (swtrp->req_sched == esdp->no) + rp_locks &= ~ERTS_PROC_LOCK_MAIN; + + if (rp_locks) + erts_smp_proc_unlock(rp, rp_locks); + + erts_smp_proc_dec_refc(rp); + + if (erts_smp_atomic32_dec_read_nob(&swtrp->refc) == 0) + swtreq_free(vswtrp); +} + +Eterm +erts_sched_wall_time_request(Process *c_p, int set, int enable) +{ + ErtsSchedulerData *esdp = ERTS_PROC_GET_SCHDATA(c_p); + Eterm ref; + ErtsSchedWallTimeReq *swtrp; + Eterm *hp; + + if (!set && !esdp->sched_wall_time.enabled) + return THE_NON_VALUE; + + swtrp = swtreq_alloc(); + ref = erts_make_ref(c_p); + hp = &swtrp->ref_heap[0]; + + swtrp->set = set; + swtrp->enable = enable; + swtrp->proc = c_p; + swtrp->ref = STORE_NC(&hp, NULL, ref); + swtrp->req_sched = esdp->no; + erts_smp_atomic32_init_nob(&swtrp->refc, + (erts_aint32_t) erts_no_schedulers); + + erts_smp_proc_add_refc(c_p, (Sint32) erts_no_schedulers); + +#ifdef ERTS_SMP + if (erts_no_schedulers > 1) + erts_schedule_multi_misc_aux_work(1, + erts_no_schedulers, + reply_sched_wall_time, + (void *) swtrp); +#endif + + reply_sched_wall_time((void *) swtrp); + + return ref; +} + static ERTS_INLINE ErtsProcList * proclist_create(Process *p) { @@ -577,6 +817,13 @@ erts_sched_finish_poke(ErtsSchedulerSleepInfo *ssi, erts_aint32_t flags) case ERTS_SSI_FLG_POLL_SLEEPING: erts_sys_schedule_interrupt(1); break; + case ERTS_SSI_FLG_POLL_SLEEPING|ERTS_SSI_FLG_TSE_SLEEPING: + /* + * Thread progress blocking while poll sleeping; need + * to signal on both... + */ + erts_sys_schedule_interrupt(1); + /* fall through */ case ERTS_SSI_FLG_TSE_SLEEPING: erts_tse_set(ssi->event); break; @@ -589,189 +836,769 @@ erts_sched_finish_poke(ErtsSchedulerSleepInfo *ssi, erts_aint32_t flags) } } +#endif + +static ERTS_INLINE void +set_aux_work_flags_wakeup_nob(ErtsSchedulerSleepInfo *ssi, + erts_aint32_t flgs) +{ + erts_aint32_t old_flgs; + + ERTS_DBG_CHK_SSI_AUX_WORK(ssi); + + old_flgs = erts_atomic32_read_nob(&ssi->aux_work); + if ((old_flgs & flgs) == 0) { + + old_flgs = erts_atomic32_read_bor_nob(&ssi->aux_work, flgs); + + if ((old_flgs & flgs) == 0) { +#ifdef ERTS_SMP + erts_sched_poke(ssi); +#else + erts_sys_schedule_interrupt(1); +#endif + } + } +} + +#if 0 /* Currently not used */ + +static ERTS_INLINE void +set_aux_work_flags_wakeup_relb(ErtsSchedulerSleepInfo *ssi, + erts_aint32_t flgs) +{ + erts_aint32_t old_flgs; + + ERTS_DBG_CHK_SSI_AUX_WORK(ssi); + + old_flgs = erts_atomic32_read_bor_relb(&ssi->aux_work, flgs); + + if ((old_flgs & flgs) == 0) { +#ifdef ERTS_SMP + erts_sched_poke(ssi); +#else + erts_sys_schedule_interrupt(1); +#endif + } +} + +#endif + +static ERTS_INLINE erts_aint32_t +set_aux_work_flags(ErtsSchedulerSleepInfo *ssi, erts_aint32_t flgs) +{ + return erts_atomic32_read_bor_nob(&ssi->aux_work, flgs); +} + +static ERTS_INLINE erts_aint32_t +unset_aux_work_flags(ErtsSchedulerSleepInfo *ssi, erts_aint32_t flgs) +{ + return erts_atomic32_read_band_nob(&ssi->aux_work, ~flgs); +} + +#ifdef ERTS_SMP + +static ERTS_INLINE void +thr_prgr_current_reset(ErtsAuxWorkData *awdp) +{ + awdp->current_thr_prgr = ERTS_THR_PRGR_INVALID; +} + +static ERTS_INLINE ErtsThrPrgrVal +thr_prgr_current(ErtsAuxWorkData *awdp) +{ + ErtsThrPrgrVal current = awdp->current_thr_prgr; + if (current == ERTS_THR_PRGR_INVALID) { + current = erts_thr_progress_current(); + awdp->current_thr_prgr = current; + } + return current; +} + +#endif + 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; +ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(misc_aux_work, + erts_misc_aux_work_t, + 200, + ERTS_ALC_T_MISC_AUX_WORK) typedef union { - erts_misc_aux_work_q_t data; - char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(erts_misc_aux_work_q_t))]; + ErtsThrQ_t q; + char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsThrQ_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 +notify_aux_work(void *vssi) +{ + set_aux_work_flags_wakeup_nob((ErtsSchedulerSleepInfo *) vssi, + ERTS_SSI_AUX_WORK_MISC); +} static void init_misc_aux_work(void) { int ix; + ErtsThrQInit_t qinit = ERTS_THR_Q_INIT_DEFAULT; + qinit.notify = notify_aux_work; init_misc_aux_work_alloc(); misc_aux_work_queues = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_MISC_AUX_WORK_Q, - erts_no_schedulers * - sizeof(erts_algnd_misc_aux_work_q_t)); + sizeof(erts_algnd_misc_aux_work_q_t) + * (erts_no_schedulers+1)); - 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; +#ifdef ERTS_SMP + ix = 0; /* aux_thread + schedulers */ +#else + ix = 1; /* scheduler only */ +#endif + + for (; ix <= erts_no_schedulers; ix++) { + qinit.arg = (void *) ERTS_SCHED_SLEEP_INFO_IX(ix-1); + erts_thr_q_initialize(&misc_aux_work_queues[ix].q, &qinit); } } -static void -handle_misc_aux_work(ErtsSchedulerData *esdp) -{ - int ix = (int) esdp->no - 1; - erts_misc_aux_work_t *mawp; +static erts_aint32_t +misc_aux_work_clean(ErtsThrQ_t *q, + ErtsAuxWorkData *awdp, + erts_aint32_t aux_work) +{ + switch (erts_thr_q_clean(q)) { + case ERTS_THR_Q_DIRTY: + set_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_MISC); + return aux_work | ERTS_SSI_AUX_WORK_MISC; + case ERTS_THR_Q_NEED_THR_PRGR: +#ifdef ERTS_SMP + set_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_MISC_THR_PRGR); + erts_thr_progress_wakeup(awdp->esdp, + erts_thr_q_need_thr_progress(q)); +#endif + case ERTS_THR_Q_CLEAN: + break; + } + return aux_work; +} - 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); +static ERTS_INLINE erts_aint32_t +handle_misc_aux_work(ErtsAuxWorkData *awdp, + erts_aint32_t aux_work) +{ + ErtsThrQ_t *q = &misc_aux_work_queues[awdp->sched_id].q; - while (mawp) { - erts_misc_aux_work_t *free_mawp; + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_MISC); + while (1) { + erts_misc_aux_work_t *mawp = erts_thr_q_dequeue(q); + if (!mawp) + break; mawp->func(mawp->arg); - free_mawp = mawp; - mawp = mawp->next; - misc_aux_work_free(free_mawp); + misc_aux_work_free(mawp); } + + return misc_aux_work_clean(q, awdp, aux_work & ~ERTS_SSI_AUX_WORK_MISC); +} + +#ifdef ERTS_SMP + +static ERTS_INLINE erts_aint32_t +handle_misc_aux_work_thr_prgr(ErtsAuxWorkData *awdp, + erts_aint32_t aux_work) +{ + if (!erts_thr_progress_has_reached_this(thr_prgr_current(awdp), + awdp->misc.thr_prgr)) + return aux_work & ~ERTS_SSI_AUX_WORK_MISC_THR_PRGR; + + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_MISC_THR_PRGR); + + return misc_aux_work_clean(&misc_aux_work_queues[awdp->sched_id].q, + awdp, + aux_work & ~ERTS_SSI_AUX_WORK_MISC_THR_PRGR); +} + +#endif + +static ERTS_INLINE void +schedule_misc_aux_work(int sched_id, + void (*func)(void *), + void *arg) +{ + ErtsThrQ_t *q; + erts_misc_aux_work_t *mawp; + +#ifdef ERTS_SMP + ASSERT(0 <= sched_id && sched_id <= erts_no_schedulers); +#else + ASSERT(sched_id == 1); +#endif + + q = &misc_aux_work_queues[sched_id].q; + mawp = misc_aux_work_alloc(); + mawp->func = func; + mawp->arg = arg; + erts_thr_q_enqueue(q, mawp); } void -erts_smp_schedule_misc_aux_work(int ignore_self, - int max_sched, - void (*func)(void *), - void *arg) +erts_schedule_misc_aux_work(int sched_id, + void (*func)(void *), + void *arg) { - int ix, ignore_ix = -1; + schedule_misc_aux_work(sched_id, func, arg); +} + +void +erts_schedule_multi_misc_aux_work(int ignore_self, + int max_sched, + void (*func)(void *), + void *arg) +{ + int id, self = 0; if (ignore_self) { ErtsSchedulerData *esdp = erts_get_scheduler_data(); if (esdp) - ignore_ix = (int) esdp->no - 1; + self = (int) esdp->no; } - ASSERT(0 <= max_sched && max_sched <= erts_no_schedulers); + ASSERT(0 < max_sched && max_sched <= erts_no_schedulers); - for (ix = 0; ix < max_sched; ix++) { - erts_aint32_t aux_work; - erts_misc_aux_work_t *mawp; - ErtsSchedulerSleepInfo *ssi; - if (ix == ignore_ix) + for (id = 1; id <= max_sched; id++) { + if (id == self) continue; + schedule_misc_aux_work(id, func, arg); + } +} - mawp = misc_aux_work_alloc(); +#if ERTS_USE_ASYNC_READY_Q - mawp->func = func; - mawp->arg = arg; - mawp->next = NULL; +void +erts_notify_check_async_ready_queue(void *vno) +{ + int ix = ((int) (SWord) vno) -1; + set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(ix), + ERTS_SSI_AUX_WORK_ASYNC_READY); +} - 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); - } +static ERTS_INLINE erts_aint32_t +handle_async_ready(ErtsAuxWorkData *awdp, + erts_aint32_t aux_work) +{ + ErtsSchedulerSleepInfo *ssi = awdp->ssi; + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_ASYNC_READY); + if (erts_check_async_ready(awdp->async_ready.queue)) { + if (set_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_ASYNC_READY) + & ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN) { + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN); + aux_work &= ~ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN; + } + return aux_work; + } +#ifdef ERTS_SMP + awdp->async_ready.need_thr_prgr = 0; +#endif + set_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN); + return ((aux_work & ~ERTS_SSI_AUX_WORK_ASYNC_READY) + | ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN); +} + +static ERTS_INLINE erts_aint32_t +handle_async_ready_clean(ErtsAuxWorkData *awdp, + erts_aint32_t aux_work) +{ + void *thr_prgr_p; + +#ifdef ERTS_SMP + if (awdp->async_ready.need_thr_prgr + && !erts_thr_progress_has_reached_this(thr_prgr_current(awdp), + awdp->async_ready.thr_prgr)) { + return aux_work & ~ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN; + } + + awdp->async_ready.need_thr_prgr = 0; + thr_prgr_p = (void *) &awdp->async_ready.thr_prgr; +#else + thr_prgr_p = NULL; +#endif + + switch (erts_async_ready_clean(awdp->async_ready.queue, thr_prgr_p)) { + case ERTS_ASYNC_READY_CLEAN: + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN); + return aux_work & ~ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN; +#ifdef ERTS_SMP + case ERTS_ASYNC_READY_NEED_THR_PRGR: + erts_thr_progress_wakeup(awdp->esdp, + awdp->async_ready.thr_prgr); + awdp->async_ready.need_thr_prgr = 1; + return aux_work & ~ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN; +#endif + default: + return aux_work; + } +} + +#endif + +static ERTS_INLINE erts_aint32_t +handle_fix_alloc(ErtsAuxWorkData *awdp, erts_aint32_t aux_work) +{ + ErtsSchedulerSleepInfo *ssi = awdp->ssi; + erts_aint32_t res; + + unset_aux_work_flags(ssi, (ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM + | ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC)); + aux_work &= ~(ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM + | ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC); + res = erts_alloc_fix_alloc_shrink(awdp->sched_id, aux_work); + if (res) { + set_aux_work_flags(ssi, res); + aux_work |= res; + } + + return aux_work; +} + +#ifdef ERTS_SMP + +void +erts_alloc_notify_delayed_dealloc(int ix) +{ + set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(ix-1), + ERTS_SSI_AUX_WORK_DD); } +static ERTS_INLINE erts_aint32_t +handle_delayed_dealloc(ErtsAuxWorkData *awdp, erts_aint32_t aux_work) +{ + ErtsSchedulerSleepInfo *ssi = awdp->ssi; + int need_thr_progress = 0; + ErtsThrPrgrVal wakeup = ERTS_THR_PRGR_INVALID; + int more_work = 0; + + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD); + erts_alloc_scheduler_handle_delayed_dealloc((void *) awdp->esdp, + &need_thr_progress, + &wakeup, + &more_work); + if (more_work) { + if (set_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD) + & ERTS_SSI_AUX_WORK_DD_THR_PRGR) { + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD_THR_PRGR); + aux_work &= ~ERTS_SSI_AUX_WORK_DD_THR_PRGR; + } + return aux_work; + } + + if (need_thr_progress) { + if (wakeup == ERTS_THR_PRGR_INVALID) + wakeup = erts_thr_progress_later_than(thr_prgr_current(awdp)); + awdp->dd.thr_prgr = wakeup; + set_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD_THR_PRGR); + awdp->dd.thr_prgr = wakeup; + erts_thr_progress_wakeup(awdp->esdp, wakeup); + } + else if (awdp->dd.completed_callback) { + awdp->dd.completed_callback(awdp->dd.completed_arg); + awdp->dd.completed_callback = NULL; + awdp->dd.completed_arg = NULL; + } + return aux_work & ~ERTS_SSI_AUX_WORK_DD; +} + +static ERTS_INLINE erts_aint32_t +handle_delayed_dealloc_thr_prgr(ErtsAuxWorkData *awdp, erts_aint32_t aux_work) +{ + ErtsSchedulerSleepInfo *ssi; + int need_thr_progress; + int more_work; + ErtsThrPrgrVal wakeup = ERTS_THR_PRGR_INVALID; + ErtsThrPrgrVal current = thr_prgr_current(awdp); + + if (!erts_thr_progress_has_reached_this(current, awdp->dd.thr_prgr)) + return aux_work & ~ERTS_SSI_AUX_WORK_DD_THR_PRGR; + + ssi = awdp->ssi; + need_thr_progress = 0; + more_work = 0; + + erts_alloc_scheduler_handle_delayed_dealloc((void *) awdp->esdp, + &need_thr_progress, + &wakeup, + &more_work); + if (more_work) { + set_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD); + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD_THR_PRGR); + return ((aux_work & ~ERTS_SSI_AUX_WORK_DD_THR_PRGR) + | ERTS_SSI_AUX_WORK_DD); + } + + if (need_thr_progress) { + if (wakeup == ERTS_THR_PRGR_INVALID) + wakeup = erts_thr_progress_later_than(current); + awdp->dd.thr_prgr = wakeup; + erts_thr_progress_wakeup(awdp->esdp, wakeup); + } + else { + unset_aux_work_flags(ssi, ERTS_SSI_AUX_WORK_DD_THR_PRGR); + if (awdp->dd.completed_callback) { + awdp->dd.completed_callback(awdp->dd.completed_arg); + awdp->dd.completed_callback = NULL; + awdp->dd.completed_arg = NULL; + } + } + + return aux_work & ~ERTS_SSI_AUX_WORK_DD_THR_PRGR; +} + +static erts_atomic32_t completed_dealloc_count; + +static void +completed_dealloc(void *vproc) +{ + if (erts_atomic32_dec_read_mb(&completed_dealloc_count) == 0) { + erts_resume((Process *) vproc, (ErtsProcLocks) 0); + erts_smp_proc_dec_refc((Process *) vproc); + } +} + +static void +setup_completed_dealloc(void *vproc) +{ + ErtsSchedulerData *esdp = erts_get_scheduler_data(); + ErtsAuxWorkData *awdp = (esdp + ? &esdp->aux_work_data + : aux_thread_aux_work_data); + erts_alloc_fix_alloc_shrink(awdp->sched_id, 0); + set_aux_work_flags_wakeup_nob(awdp->ssi, ERTS_SSI_AUX_WORK_DD); + awdp->dd.completed_callback = completed_dealloc; + awdp->dd.completed_arg = vproc; +} + +static void +prep_setup_completed_dealloc(void *vproc) +{ + erts_aint32_t count = (erts_aint32_t) (erts_no_schedulers+1); + if (erts_atomic32_dec_read_mb(&completed_dealloc_count) == count) { + /* scheduler threads */ + erts_schedule_multi_misc_aux_work(0, + erts_no_schedulers, + setup_completed_dealloc, + vproc); + /* aux_thread */ + erts_schedule_misc_aux_work(0, + setup_completed_dealloc, + vproc); + } +} + +#endif /* ERTS_SMP */ + +int +erts_debug_wait_deallocations(Process *c_p) +{ +#ifndef ERTS_SMP + erts_alloc_fix_alloc_shrink(1, 0); + return 1; +#else + /* Only one process at a time can do this */ + erts_aint32_t count = (erts_aint32_t) (2*(erts_no_schedulers+1)); + if (0 == erts_atomic32_cmpxchg_mb(&completed_dealloc_count, + count, + 0)) { + erts_suspend(c_p, ERTS_PROC_LOCK_MAIN, NULL); + erts_smp_proc_inc_refc(c_p); + /* scheduler threads */ + erts_schedule_multi_misc_aux_work(0, + erts_no_schedulers, + prep_setup_completed_dealloc, + (void *) c_p); + /* aux_thread */ + erts_schedule_misc_aux_work(0, + prep_setup_completed_dealloc, + (void *) c_p); + return 1; + } + return 0; +#endif +} + + #ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN void erts_smp_notify_check_children_needed(void) { int i; + for (i = 0; i < erts_no_schedulers; i++) + set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(i), + ERTS_SSI_AUX_WORK_CHECK_CHILDREN); +} - for (i = 0; i < erts_no_schedulers; i++) { - erts_aint32_t aux_work; - ErtsSchedulerSleepInfo *ssi; - ssi = ERTS_SCHED_SLEEP_INFO_IX(i); - aux_work = erts_smp_atomic32_bor(&ssi->aux_work, - ERTS_SSI_AUX_WORK_CHECK_CHILDREN); - if (!(aux_work & ERTS_SSI_AUX_WORK_CHECK_CHILDREN)) - erts_sched_poke(ssi); - } +static ERTS_INLINE erts_aint32_t +handle_check_children(ErtsAuxWorkData *awdp, erts_aint32_t aux_work) +{ + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_CHECK_CHILDREN); + erts_check_children(); + return aux_work & ~ERTS_SSI_AUX_WORK_CHECK_CHILDREN; } + #endif -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK +#if HAVE_ERTS_MSEG + static ERTS_INLINE erts_aint32_t -blockable_aux_work(ErtsSchedulerData *esdp, - ErtsSchedulerSleepInfo *ssi, - erts_aint32_t aux_work) +handle_mseg_cache_check(ErtsAuxWorkData *awdp, 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, - ~ERTS_SSI_AUX_WORK_CHECK_CHILDREN); - aux_work &= ~ERTS_SSI_AUX_WORK_CHECK_CHILDREN; - erts_check_children(); - } + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK); + erts_mseg_cache_check(); + return aux_work & ~ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK; +} + #endif + +static ERTS_INLINE erts_aint32_t +handle_setup_aux_work_timer(ErtsAuxWorkData *awdp, erts_aint32_t aux_work) +{ + unset_aux_work_flags(awdp->ssi, ERTS_SSI_AUX_WORK_SET_TMO); + setup_aux_work_timer(); + return aux_work & ~ERTS_SSI_AUX_WORK_SET_TMO; +} + +static erts_aint32_t +handle_aux_work(ErtsAuxWorkData *awdp, erts_aint32_t orig_aux_work) +{ +#undef HANDLE_AUX_WORK +#define HANDLE_AUX_WORK(FLG, HNDLR) \ + ignore |= FLG; \ + if (aux_work & FLG) { \ + aux_work = HNDLR(awdp, aux_work); \ + ERTS_DBG_CHK_AUX_WORK_VAL(aux_work); \ + if (!(aux_work & ~ignore)) { \ + ERTS_DBG_CHK_AUX_WORK_VAL(aux_work); \ + return aux_work; \ + } \ } + + erts_aint32_t aux_work = orig_aux_work; + erts_aint32_t ignore = 0; + +#ifdef ERTS_SMP + thr_prgr_current_reset(awdp); +#endif + + ERTS_DBG_CHK_AUX_WORK_VAL(aux_work); + ASSERT(aux_work); + + /* + * Handlers are *only* allowed to modify flags in return value + * and ssi flags that are explicity handled by the handler. + * Handlers are, e.g., not allowed to read the ssi flag field and + * then unconditionally return that value. + * + * Flag field returned should only contain flags for work that + * can continue immediately. + */ + + /* + * Keep ERTS_SSI_AUX_WORK flags in expected frequency order relative + * eachother. Most frequent first. + */ +#ifdef ERTS_SMP + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_DD, + handle_delayed_dealloc); + /* DD must be before DD_THR_PRGR */ + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_DD_THR_PRGR, + handle_delayed_dealloc_thr_prgr); +#endif + + HANDLE_AUX_WORK((ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM + | ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC), + handle_fix_alloc); + +#if ERTS_USE_ASYNC_READY_Q + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_ASYNC_READY, + handle_async_ready); + /* ASYNC_READY must be before ASYNC_READY_CLEAN */ + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN, + handle_async_ready_clean); +#endif + +#ifdef ERTS_SMP + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_MISC_THR_PRGR, + handle_misc_aux_work_thr_prgr); +#endif + /* MISC_THR_PRGR must be before MISC */ + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_MISC, + handle_misc_aux_work); + +#ifdef ERTS_SMP_SCHEDULERS_NEED_TO_CHECK_CHILDREN + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_CHECK_CHILDREN, + handle_check_children); +#endif + + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_SET_TMO, + handle_setup_aux_work_timer); + +#if HAVE_ERTS_MSEG + HANDLE_AUX_WORK(ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK, + handle_mseg_cache_check); +#endif + + ERTS_DBG_CHK_AUX_WORK_VAL(aux_work); + return aux_work; + +#undef HANDLE_AUX_WORK + } -#endif +typedef struct { + union { + ErlTimer data; + char align__[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErlTimer))]; + } timer; -#ifdef ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK -static ERTS_INLINE erts_aint32_t -nonblockable_aux_work(ErtsSchedulerData *esdp, - ErtsSchedulerSleepInfo *ssi, - erts_aint32_t aux_work) + int initialized; + erts_atomic32_t refc; + erts_atomic32_t type[1]; +} ErtsAuxWorkTmo; + +static ErtsAuxWorkTmo *aux_work_tmo; + +static void +aux_work_timeout_early_init(int no_schedulers) { - if (aux_work & ERTS_SSI_NONBLOCKABLE_AUX_WORK_MASK) { + int i; + UWord p; + /* + * This is done really early. Our own allocators have + * not been started yet. + */ + + p = (UWord) malloc((sizeof(ErtsAuxWorkTmo) + + sizeof(erts_atomic32_t)*(no_schedulers+1)) + + ERTS_CACHE_LINE_SIZE-1); + if (p & ERTS_CACHE_LINE_MASK) + p = (p & ~ERTS_CACHE_LINE_MASK) + ERTS_CACHE_LINE_SIZE; + ASSERT((p & ERTS_CACHE_LINE_MASK) == 0); + + aux_work_tmo = (ErtsAuxWorkTmo *) p; + aux_work_tmo->initialized = 0; + erts_atomic32_init_nob(&aux_work_tmo->refc, 0); + for (i = 0; i <= no_schedulers; i++) + erts_atomic32_init_nob(&aux_work_tmo->type[i], 0); +} + +void +aux_work_timeout_late_init(void) +{ + aux_work_tmo->initialized = 1; + if (erts_atomic32_read_nob(&aux_work_tmo->refc)) { + aux_work_tmo->timer.data.active = 0; + erts_set_timer(&aux_work_tmo->timer.data, + aux_work_timeout, + NULL, + NULL, + 1000); } } -#endif static void -prepare_for_block(void *vrq) +aux_work_timeout(void *unused) { - erts_smp_runq_unlock((ErtsRunQueue *) vrq); + erts_aint32_t refc; + int i; +#ifdef ERTS_SMP + i = 0; +#else + i = 1; +#endif + + for (; i <= erts_no_schedulers; i++) { + erts_aint32_t type; + type = erts_atomic32_read_acqb(&aux_work_tmo->type[i]); + if (type) + set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(i-1), + type); + } + + refc = erts_atomic32_read_nob(&aux_work_tmo->refc); + ASSERT(refc >= 1); + if (refc != 1 + || 1 != erts_atomic32_cmpxchg_relb(&aux_work_tmo->refc, 0, 1)) { + /* Setup next timeout... */ + aux_work_tmo->timer.data.active = 0; + erts_set_timer(&aux_work_tmo->timer.data, + aux_work_timeout, + NULL, + NULL, + 1000); + } } static void -resume_after_block(void *vrq) +setup_aux_work_timer(void) { - erts_smp_runq_lock((ErtsRunQueue *) vrq); +#ifndef ERTS_SMP + if (!erts_get_scheduler_data()) + set_aux_work_flags_wakeup_nob(ERTS_SCHED_SLEEP_INFO_IX(0), + ERTS_SSI_AUX_WORK_SET_TMO); + else +#endif + { + aux_work_tmo->timer.data.active = 0; + erts_set_timer(&aux_work_tmo->timer.data, + aux_work_timeout, + NULL, + NULL, + 1000); + } } +erts_aint32_t +erts_set_aux_work_timeout(int ix, erts_aint32_t type, int enable) +{ + erts_aint32_t old, refc; + +#ifndef ERTS_SMP + ix = 1; #endif + ERTS_DBG_CHK_AUX_WORK_VAL(type); + ERTS_DBG_CHK_AUX_WORK_VAL(erts_atomic32_read_nob(&aux_work_tmo->type[ix])); +// erts_fprintf(stderr, "t(%d, 0x%x, %d)\n", ix, type, enable); + + if (!enable) { + old = erts_atomic32_read_band_mb(&aux_work_tmo->type[ix], ~type); + ERTS_DBG_CHK_AUX_WORK_VAL(erts_atomic32_read_nob(&aux_work_tmo->type[ix])); + if (old != 0 && (old & ~type) == 0) + erts_atomic32_dec_relb(&aux_work_tmo->refc); + return old; + } + + old = erts_atomic32_read_bor_mb(&aux_work_tmo->type[ix], type); + ERTS_DBG_CHK_AUX_WORK_VAL(erts_atomic32_read_nob(&aux_work_tmo->type[ix])); + if (old == 0 && type != 0) { + refc = erts_atomic32_inc_read_acqb(&aux_work_tmo->refc); + if (refc == 1) { + erts_atomic32_inc_acqb(&aux_work_tmo->refc); + if (aux_work_tmo->initialized) + setup_aux_work_timer(); + } + } + return old; +} + + + static ERTS_INLINE void sched_waiting_sys(Uint no, ErtsRunQueue *rq) { @@ -800,8 +1627,6 @@ sched_active_sys(Uint no, ErtsRunQueue *rq) Uint erts_active_schedulers(void) { - /* RRRRRRRRR */ - Uint as = erts_no_schedulers; ERTS_ATOMIC_FOREACH_RUNQ(rq, as -= abs(rq->waiting)); @@ -815,7 +1640,7 @@ erts_active_schedulers(void) static ERTS_INLINE void clear_sys_scheduling(void) { - erts_smp_atomic32_set_relb(&doing_sys_schedule, 0); + erts_smp_atomic32_set_mb(&doing_sys_schedule, 0); } static ERTS_INLINE int @@ -882,42 +1707,43 @@ sched_active(Uint no, ErtsRunQueue *rq) static int ERTS_INLINE ongoing_multi_scheduling_block(void) { - return erts_smp_atomic32_read(&schdlr_sspnd.msb.ongoing) != 0; + ERTS_SMP_LC_ASSERT(erts_lc_mtx_is_locked(&schdlr_sspnd.mtx)); + return schdlr_sspnd.msb.ongoing; } static ERTS_INLINE void empty_runq(ErtsRunQueue *rq) { - erts_aint32_t oifls = erts_smp_atomic32_band(&rq->info_flags, - ~ERTS_RUNQ_IFLG_NONEMPTY); + erts_aint32_t oifls = erts_smp_atomic32_read_band_nob(&rq->info_flags, + ~ERTS_RUNQ_IFLG_NONEMPTY); if (oifls & ERTS_RUNQ_IFLG_NONEMPTY) { #ifdef DEBUG - erts_aint32_t empty = erts_smp_atomic32_read(&no_empty_run_queues); + erts_aint32_t empty = erts_smp_atomic32_read_nob(&no_empty_run_queues); /* * For a short period of time no_empty_run_queues may have * been increased twice for a specific run queue. */ ASSERT(0 <= empty && empty < 2*erts_no_run_queues); #endif - erts_smp_atomic32_inc(&no_empty_run_queues); + erts_smp_atomic32_inc_relb(&no_empty_run_queues); } } static ERTS_INLINE void non_empty_runq(ErtsRunQueue *rq) { - erts_aint32_t oifls = erts_smp_atomic32_bor(&rq->info_flags, - ERTS_RUNQ_IFLG_NONEMPTY); + erts_aint32_t oifls = erts_smp_atomic32_read_bor_nob(&rq->info_flags, + ERTS_RUNQ_IFLG_NONEMPTY); if (!(oifls & ERTS_RUNQ_IFLG_NONEMPTY)) { #ifdef DEBUG - erts_aint32_t empty = erts_smp_atomic32_read(&no_empty_run_queues); + erts_aint32_t empty = erts_smp_atomic32_read_nob(&no_empty_run_queues); /* * For a short period of time no_empty_run_queues may have * been increased twice for a specific run queue. */ ASSERT(0 < empty && empty <= 2*erts_no_run_queues); #endif - erts_smp_atomic32_dec(&no_empty_run_queues); + erts_smp_atomic32_dec_relb(&no_empty_run_queues); } } @@ -930,7 +1756,7 @@ sched_prep_spin_wait(ErtsSchedulerSleepInfo *ssi) erts_aint32_t xflgs = 0; do { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return nflgs; xflgs = oflgs; @@ -947,7 +1773,7 @@ sched_prep_cont_spin_wait(ErtsSchedulerSleepInfo *ssi) erts_aint32_t xflgs = ERTS_SSI_FLG_WAITING; do { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return nflgs; xflgs = oflgs; @@ -987,9 +1813,13 @@ sched_set_sleeptype(ErtsSchedulerSleepInfo *ssi, erts_aint32_t sleep_type) if (sleep_type == ERTS_SSI_FLG_TSE_SLEEPING) erts_tse_reset(ssi->event); + else { + ASSERT(sleep_type == ERTS_SSI_FLG_POLL_SLEEPING); + erts_sys_schedule_interrupt(0); + } while (1) { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return nflgs; if ((oflgs & (ERTS_SSI_FLG_SLEEPING|ERTS_SSI_FLG_WAITING)) @@ -1005,34 +1835,137 @@ sched_set_sleeptype(ErtsSchedulerSleepInfo *ssi, erts_aint32_t sleep_type) (((FLGS) & (ERTS_SSI_FLG_WAITING|ERTS_SSI_FLG_SUSPENDED)) \ != ERTS_SSI_FLG_WAITING) + +static void +thr_prgr_wakeup(void *vssi) +{ + erts_sched_poke((ErtsSchedulerSleepInfo *) vssi); +} + +static void +thr_prgr_prep_wait(void *vssi) +{ + ErtsSchedulerSleepInfo *ssi = (ErtsSchedulerSleepInfo *) vssi; + erts_smp_atomic32_read_bor_acqb(&ssi->flags, + ERTS_SSI_FLG_SLEEPING); +} + +static void +thr_prgr_wait(void *vssi) +{ + ErtsSchedulerSleepInfo *ssi = (ErtsSchedulerSleepInfo *) vssi; + erts_aint32_t xflgs = ERTS_SSI_FLG_SLEEPING; + + erts_tse_reset(ssi->event); + + while (1) { + erts_aint32_t aflgs, nflgs; + nflgs = xflgs | ERTS_SSI_FLG_TSE_SLEEPING; + aflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); + if (aflgs == xflgs) { + erts_tse_wait(ssi->event); + break; + } + if ((aflgs & ERTS_SSI_FLG_SLEEPING) == 0) + break; + xflgs = aflgs; + } +} + +static void +thr_prgr_fin_wait(void *vssi) +{ + ErtsSchedulerSleepInfo *ssi = (ErtsSchedulerSleepInfo *) vssi; + erts_smp_atomic32_read_band_nob(&ssi->flags, + ~(ERTS_SSI_FLG_SLEEPING + | ERTS_SSI_FLG_TSE_SLEEPING)); +} + +static void init_aux_work_data(ErtsAuxWorkData *awdp, ErtsSchedulerData *esdp); + +static void * +aux_thread(void *unused) +{ + ErtsAuxWorkData *awdp = aux_thread_aux_work_data; + ErtsSchedulerSleepInfo *ssi = ERTS_SCHED_SLEEP_INFO_IX(-1); + erts_aint32_t aux_work; + ErtsThrPrgrCallbacks callbacks; + int thr_prgr_active = 1; + + ssi->event = erts_tse_fetch(); + + callbacks.arg = (void *) ssi; + callbacks.wakeup = thr_prgr_wakeup; + callbacks.prepare_wait = thr_prgr_prep_wait; + callbacks.wait = thr_prgr_wait; + callbacks.finalize_wait = thr_prgr_fin_wait; + + erts_thr_progress_register_managed_thread(NULL, &callbacks, 1); + init_aux_work_data(awdp, NULL); + awdp->ssi = ssi; + + sched_prep_spin_wait(ssi); + + while (1) { + erts_aint32_t flgs; + + 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); + aux_work = handle_aux_work(awdp, aux_work); + if (aux_work && erts_thr_progress_update(NULL)) + erts_thr_progress_leader_update(NULL); + } + + if (!aux_work) { + if (thr_prgr_active) + erts_thr_progress_active(NULL, thr_prgr_active = 0); + erts_thr_progress_prepare_wait(NULL); + + 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_TSE_SLEEPING); + if (flgs & ERTS_SSI_FLG_SLEEPING) { + int res; + ASSERT(flgs & ERTS_SSI_FLG_TSE_SLEEPING); + ASSERT(flgs & ERTS_SSI_FLG_WAITING); + do { + res = erts_tse_wait(ssi->event); + } while (res == EINTR); + } + } + erts_thr_progress_finalize_wait(NULL); + } + + flgs = sched_prep_spin_wait(ssi); + } + return NULL; +} + +#endif /* ERTS_SMP */ + static void scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) { + int working = 1; ErtsSchedulerSleepInfo *ssi = esdp->ssi; int spincount; + erts_aint32_t aux_work = 0; +#ifdef ERTS_SMP + int thr_prgr_active = 1; erts_aint32_t flgs; -#if defined(ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK) \ - || defined(ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK) - erts_aint32_t aux_work; -#endif ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); - erts_smp_spin_lock(&rq->sleepers.lock); flgs = sched_prep_spin_wait(ssi); if (flgs & ERTS_SSI_FLG_SUSPENDED) { /* Go suspend instead... */ - erts_smp_spin_unlock(&rq->sleepers.lock); return; } - ssi->prev = NULL; - ssi->next = rq->sleepers.list; - if (rq->sleepers.list) - rq->sleepers.list->prev = ssi; - rq->sleepers.list = ssi; - erts_smp_spin_unlock(&rq->sleepers.lock); - /* * If all schedulers are waiting, one of them *should* * be waiting in erl_sys_schedule() @@ -1048,34 +1981,45 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) tse_wait: -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); - tse_blockable_aux_work: - aux_work = blockable_aux_work(esdp, ssi, aux_work); -#endif - erts_smp_activity_begin(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); + if (thr_prgr_active != working) + sched_wall_time_change(esdp, thr_prgr_active); while (1) { -#ifdef ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK -#ifndef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); -#endif - nonblockable_aux_work(esdp, ssi, aux_work); -#endif + aux_work = erts_atomic32_read_acqb(&ssi->aux_work); + if (aux_work) { + if (!thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 1); + sched_wall_time_change(esdp, 1); + } + aux_work = handle_aux_work(&esdp->aux_work_data, aux_work); + if (aux_work && erts_thr_progress_update(esdp)) + erts_thr_progress_leader_update(esdp); + } - flgs = sched_spin_wait(ssi, spincount); - if (flgs & ERTS_SSI_FLG_SLEEPING) { - ASSERT(flgs & ERTS_SSI_FLG_WAITING); - flgs = sched_set_sleeptype(ssi, ERTS_SSI_FLG_TSE_SLEEPING); + if (aux_work) + flgs = erts_smp_atomic32_read_acqb(&ssi->flags); + else { + if (thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 0); + sched_wall_time_change(esdp, 0); + } + erts_thr_progress_prepare_wait(esdp); + + flgs = sched_spin_wait(ssi, spincount); if (flgs & ERTS_SSI_FLG_SLEEPING) { - int res; - ASSERT(flgs & ERTS_SSI_FLG_TSE_SLEEPING); ASSERT(flgs & ERTS_SSI_FLG_WAITING); - do { - res = erts_tse_wait(ssi->event); - } while (res == EINTR); + flgs = sched_set_sleeptype(ssi, ERTS_SSI_FLG_TSE_SLEEPING); + if (flgs & ERTS_SSI_FLG_SLEEPING) { + int res; + ASSERT(flgs & ERTS_SSI_FLG_TSE_SLEEPING); + ASSERT(flgs & ERTS_SSI_FLG_WAITING); + do { + res = erts_tse_wait(ssi->event); + } while (res == EINTR); + } } + erts_thr_progress_finalize_wait(esdp); } if (!(flgs & ERTS_SSI_FLG_WAITING)) { @@ -1091,26 +2035,23 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) break; } -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); - if (aux_work & ERTS_SSI_BLOCKABLE_AUX_WORK_MASK) { - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); - goto tse_blockable_aux_work; - } -#endif - } - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); - if (flgs & ~ERTS_SSI_FLG_SUSPENDED) - erts_smp_atomic32_band(&ssi->flags, ERTS_SSI_FLG_SUSPENDED); + erts_smp_atomic32_read_band_nob(&ssi->flags, ERTS_SSI_FLG_SUSPENDED); + + if (!thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 1); + sched_wall_time_change(esdp, 1); + } erts_smp_runq_lock(rq); sched_active(esdp->no, rq); } - else { + else +#endif + { erts_aint_t dt; erts_smp_atomic32_set_relb(&function_calls, 0); @@ -1118,14 +2059,21 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) sched_waiting_sys(esdp->no, rq); + erts_smp_runq_unlock(rq); + ASSERT(working); + sched_wall_time_change(esdp, working = 0); + spincount = ERTS_SCHED_SYS_SLEEP_SPINCOUNT; while (spincount-- > 0) { sys_poll_aux_work: + if (working) + sched_wall_time_change(esdp, working = 0); + ASSERT(!erts_port_task_have_outstanding_io_tasks()); erl_sys_schedule(1); /* Might give us something to do */ @@ -1134,30 +2082,34 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) if (dt) erts_bump_timer(dt); sys_aux_work: - -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); - aux_work = blockable_aux_work(esdp, ssi, aux_work); +#ifndef ERTS_SMP + erts_sys_schedule_interrupt(0); #endif -#ifdef ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK -#ifndef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); + + aux_work = erts_atomic32_read_acqb(&ssi->aux_work); + if (aux_work) { + if (!working) + sched_wall_time_change(esdp, working = 1); +#ifdef ERTS_SMP + if (!thr_prgr_active) + erts_thr_progress_active(esdp, thr_prgr_active = 1); #endif - nonblockable_aux_work(esdp, ssi, aux_work); + aux_work = handle_aux_work(&esdp->aux_work_data, aux_work); +#ifdef ERTS_SMP + if (aux_work && erts_thr_progress_update(esdp)) + erts_thr_progress_leader_update(esdp); #endif + } +#ifndef ERTS_SMP + if (rq->len != 0 || rq->misc.start) + goto sys_woken; +#else flgs = erts_smp_atomic32_read_acqb(&ssi->flags); if (!(flgs & ERTS_SSI_FLG_WAITING)) { ASSERT(!(flgs & ERTS_SSI_FLG_SLEEPING)); goto sys_woken; } - if (!(flgs & ERTS_SSI_FLG_SLEEPING)) { - flgs = sched_prep_cont_spin_wait(ssi); - if (!(flgs & ERTS_SSI_FLG_WAITING)) { - ASSERT(!(flgs & ERTS_SSI_FLG_SLEEPING)); - goto sys_woken; - } - } /* * If we got new I/O tasks we aren't allowed to @@ -1174,10 +2126,12 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) goto tse_wait; } } +#endif } erts_smp_runq_lock(rq); +#ifdef ERTS_SMP /* * If we got new I/O tasks we aren't allowed to * sleep in erl_sys_schedule(). @@ -1189,64 +2143,93 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) * Got to check that we still got I/O tasks; otherwise * we have to wait in erl_sys_schedule() after all... */ - if (prepare_for_sys_schedule()) - goto do_sys_schedule; - - /* - * Not allowed to wait in erl_sys_schedule; - * do tse wait instead... - */ - sched_change_waiting_sys_to_waiting(esdp->no, rq); + if (!prepare_for_sys_schedule()) { + /* + * Not allowed to wait in erl_sys_schedule; + * do tse wait instead... + */ + sched_change_waiting_sys_to_waiting(esdp->no, rq); + erts_smp_runq_unlock(rq); + spincount = 0; + goto tse_wait; + } + } +#endif + if (aux_work) { erts_smp_runq_unlock(rq); - spincount = 0; - goto tse_wait; + goto sys_poll_aux_work; } - else { - do_sys_schedule: - erts_sys_schedule_interrupt(0); - flgs = sched_set_sleeptype(ssi, ERTS_SSI_FLG_POLL_SLEEPING); - if (!(flgs & ERTS_SSI_FLG_SLEEPING)) { - if (!(flgs & ERTS_SSI_FLG_WAITING)) - goto sys_locked_woken; - erts_smp_runq_unlock(rq); - flgs = sched_prep_cont_spin_wait(ssi); - if (!(flgs & ERTS_SSI_FLG_WAITING)) { - ASSERT(!(flgs & ERTS_SSI_FLG_SLEEPING)); - goto sys_woken; - } - ASSERT(!erts_port_task_have_outstanding_io_tasks()); - goto sys_poll_aux_work; +#ifdef ERTS_SMP + flgs = sched_set_sleeptype(ssi, ERTS_SSI_FLG_POLL_SLEEPING); + if (!(flgs & ERTS_SSI_FLG_SLEEPING)) { + if (!(flgs & ERTS_SSI_FLG_WAITING)) { + ASSERT(!(flgs & ERTS_SSI_FLG_SLEEPING)); + goto sys_locked_woken; } + erts_smp_runq_unlock(rq); + flgs = sched_prep_cont_spin_wait(ssi); + if (!(flgs & ERTS_SSI_FLG_WAITING)) { + ASSERT(!(flgs & ERTS_SSI_FLG_SLEEPING)); + goto sys_woken; + } + ASSERT(!erts_port_task_have_outstanding_io_tasks()); + goto sys_poll_aux_work; + } - ASSERT(flgs & ERTS_SSI_FLG_POLL_SLEEPING); - ASSERT(flgs & ERTS_SSI_FLG_WAITING); + ASSERT(flgs & ERTS_SSI_FLG_POLL_SLEEPING); + ASSERT(flgs & ERTS_SSI_FLG_WAITING); +#endif - erts_smp_runq_unlock(rq); + erts_smp_runq_unlock(rq); - ASSERT(!erts_port_task_have_outstanding_io_tasks()); + if (working) + sched_wall_time_change(esdp, working = 0); - erl_sys_schedule(0); +#ifdef ERTS_SMP + if (thr_prgr_active) + erts_thr_progress_active(esdp, thr_prgr_active = 0); +#endif - dt = erts_do_time_read_and_reset(); - if (dt) erts_bump_timer(dt); + ASSERT(!erts_port_task_have_outstanding_io_tasks()); - flgs = sched_prep_cont_spin_wait(ssi); - if (flgs & ERTS_SSI_FLG_WAITING) - goto sys_aux_work; + erl_sys_schedule(0); - sys_woken: + dt = erts_do_time_read_and_reset(); + if (dt) erts_bump_timer(dt); + +#ifndef ERTS_SMP + if (rq->len == 0 && !rq->misc.start) + goto sys_aux_work; + sys_woken: +#else + flgs = sched_prep_cont_spin_wait(ssi); + if (flgs & ERTS_SSI_FLG_WAITING) + goto sys_aux_work; + + sys_woken: + if (!thr_prgr_active) + erts_thr_progress_active(esdp, thr_prgr_active = 1); + erts_smp_runq_lock(rq); + sys_locked_woken: + if (!thr_prgr_active) { + erts_smp_runq_unlock(rq); + erts_thr_progress_active(esdp, thr_prgr_active = 1); erts_smp_runq_lock(rq); - sys_locked_woken: - clear_sys_scheduling(); - if (flgs & ~ERTS_SSI_FLG_SUSPENDED) - erts_smp_atomic32_band(&ssi->flags, ERTS_SSI_FLG_SUSPENDED); - sched_active_sys(esdp->no, rq); } + clear_sys_scheduling(); + if (flgs & ~ERTS_SSI_FLG_SUSPENDED) + erts_smp_atomic32_read_band_nob(&ssi->flags, ERTS_SSI_FLG_SUSPENDED); +#endif + if (!working) + sched_wall_time_change(esdp, working = 1); + sched_active_sys(esdp->no, rq); } ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); } +#ifdef ERTS_SMP + static ERTS_INLINE erts_aint32_t ssi_flags_set_wake(ErtsSchedulerSleepInfo *ssi) { @@ -1255,7 +2238,7 @@ ssi_flags_set_wake(ErtsSchedulerSleepInfo *ssi) erts_aint32_t nflgs = 0; erts_aint32_t xflgs = ERTS_SSI_FLG_SLEEPING|ERTS_SSI_FLG_WAITING; while (1) { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_relb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return oflgs; nflgs = oflgs & ERTS_SSI_FLG_SUSPENDED; @@ -1264,10 +2247,10 @@ ssi_flags_set_wake(ErtsSchedulerSleepInfo *ssi) } static void -wake_scheduler(ErtsRunQueue *rq, int incq, int one) +wake_scheduler(ErtsRunQueue *rq, int incq) { ErtsSchedulerSleepInfo *ssi; - ErtsSchedulerSleepList *sl; + erts_aint32_t flgs; /* * The unlocked run queue is not strictly necessary @@ -1279,57 +2262,13 @@ wake_scheduler(ErtsRunQueue *rq, int incq, int one) */ ERTS_SMP_LC_ASSERT(!erts_smp_lc_runq_is_locked(rq)); - sl = &rq->sleepers; - - erts_smp_spin_lock(&sl->lock); - ssi = sl->list; - if (!ssi) - erts_smp_spin_unlock(&sl->lock); - else if (one) { - erts_aint32_t flgs; - if (ssi->prev) - ssi->prev->next = ssi->next; - else { - ASSERT(sl->list == ssi); - sl->list = ssi->next; - } - if (ssi->next) - ssi->next->prev = ssi->prev; - - erts_smp_spin_unlock(&sl->lock); + ssi = rq->scheduler->ssi; - ERTS_THR_MEMORY_BARRIER; - flgs = ssi_flags_set_wake(ssi); - erts_sched_finish_poke(ssi, flgs); - - if (incq && !erts_common_run_queue && (flgs & ERTS_SSI_FLG_WAITING)) - non_empty_runq(rq); - } - else { - sl->list = NULL; - erts_smp_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(ssi); + erts_sched_finish_poke(ssi, flgs); -static void -wake_all_schedulers(void) -{ - if (erts_common_run_queue) - wake_scheduler(erts_common_run_queue, 0, 0); - else { - int ix; - for (ix = 0; ix < erts_no_run_queues; ix++) { - ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); - wake_scheduler(rq, 0, 1); - } - } + if (incq && (flgs & ERTS_SSI_FLG_WAITING)) + non_empty_runq(rq); } #define ERTS_NO_USED_RUNQS_SHIFT 16 @@ -1344,13 +2283,13 @@ init_no_runqs(int active, int used) { erts_aint32_t no_runqs = (erts_aint32_t) (active & ERTS_NO_RUNQS_MASK); no_runqs |= (erts_aint32_t) ((used & ERTS_NO_RUNQS_MASK) << ERTS_NO_USED_RUNQS_SHIFT); - erts_smp_atomic32_init(&balance_info.no_runqs, no_runqs); + erts_smp_atomic32_init_nob(&balance_info.no_runqs, no_runqs); } static ERTS_INLINE void get_no_runqs(int *active, int *used) { - erts_aint32_t no_runqs = erts_smp_atomic32_read(&balance_info.no_runqs); + erts_aint32_t no_runqs = erts_smp_atomic32_read_nob(&balance_info.no_runqs); if (active) *active = (int) (no_runqs & ERTS_NO_RUNQS_MASK); if (used) @@ -1360,11 +2299,12 @@ get_no_runqs(int *active, int *used) static ERTS_INLINE void set_no_used_runqs(int used) { - erts_aint32_t exp = erts_smp_atomic32_read(&balance_info.no_runqs); + erts_aint32_t exp = erts_smp_atomic32_read_nob(&balance_info.no_runqs); while (1) { erts_aint32_t act, new; - new = (used << ERTS_NO_USED_RUNQS_SHIFT) | (exp & ERTS_NO_RUNQS_MASK); - act = erts_smp_atomic32_cmpxchg(&balance_info.no_runqs, new, exp); + new = (used & ERTS_NO_RUNQS_MASK) << ERTS_NO_USED_RUNQS_SHIFT; + new |= exp & ERTS_NO_RUNQS_MASK; + act = erts_smp_atomic32_cmpxchg_nob(&balance_info.no_runqs, new, exp); if (act == exp) break; exp = act; @@ -1374,11 +2314,12 @@ set_no_used_runqs(int used) static ERTS_INLINE void set_no_active_runqs(int active) { - erts_aint32_t exp = erts_smp_atomic32_read(&balance_info.no_runqs); + erts_aint32_t exp = erts_smp_atomic32_read_nob(&balance_info.no_runqs); while (1) { erts_aint32_t act, new; - new = (exp & (ERTS_NO_RUNQS_MASK << ERTS_NO_USED_RUNQS_SHIFT)) | active; - act = erts_smp_atomic32_cmpxchg(&balance_info.no_runqs, new, exp); + new = exp & (ERTS_NO_RUNQS_MASK << ERTS_NO_USED_RUNQS_SHIFT); + new |= active & ERTS_NO_RUNQS_MASK; + act = erts_smp_atomic32_cmpxchg_nob(&balance_info.no_runqs, new, exp); if (act == exp) break; exp = act; @@ -1388,13 +2329,14 @@ set_no_active_runqs(int active) static ERTS_INLINE int try_inc_no_active_runqs(int active) { - erts_aint32_t exp = erts_smp_atomic32_read(&balance_info.no_runqs); + erts_aint32_t exp = erts_smp_atomic32_read_nob(&balance_info.no_runqs); if (((exp >> ERTS_NO_USED_RUNQS_SHIFT) & ERTS_NO_RUNQS_MASK) < active) return 0; if ((exp & ERTS_NO_RUNQS_MASK) + 1 == active) { erts_aint32_t new, act; - new = (exp & ~ERTS_NO_RUNQS_MASK) | active; - act = erts_smp_atomic32_cmpxchg(&balance_info.no_runqs, new, exp); + new = exp & (ERTS_NO_RUNQS_MASK << ERTS_NO_USED_RUNQS_SHIFT); + new |= active & ERTS_NO_RUNQS_MASK; + act = erts_smp_atomic32_cmpxchg_nob(&balance_info.no_runqs, new, exp); if (act == exp) return 1; } @@ -1410,7 +2352,7 @@ chk_wake_sched(ErtsRunQueue *crq, int ix, int activate) if (crq->ix == ix) return 0; wrq = ERTS_RUNQ_IX(ix); - iflgs = erts_smp_atomic32_read(&wrq->info_flags); + iflgs = erts_smp_atomic32_read_nob(&wrq->info_flags); if (!(iflgs & (ERTS_RUNQ_IFLG_SUSPENDED|ERTS_RUNQ_IFLG_NONEMPTY))) { if (activate) { if (try_inc_no_active_runqs(ix+1)) { @@ -1419,7 +2361,7 @@ chk_wake_sched(ErtsRunQueue *crq, int ix, int activate) erts_smp_xrunq_unlock(crq, wrq); } } - wake_scheduler(wrq, 0, 1); + wake_scheduler(wrq, 0); return 1; } return 0; @@ -1467,7 +2409,7 @@ smp_notify_inc_runq(ErtsRunQueue *runq) { #ifdef ERTS_SMP if (runq) - wake_scheduler(runq, 1, 1); + wake_scheduler(runq, 1); #endif } @@ -1482,19 +2424,12 @@ erts_sched_notify_check_cpu_bind(void) { #ifdef ERTS_SMP int ix; - if (erts_common_run_queue) { - for (ix = 0; ix < erts_no_schedulers; ix++) - erts_smp_atomic32_set_relb(&ERTS_SCHEDULER_IX(ix)->chk_cpu_bind, 1); - wake_all_schedulers(); - } - else { - for (ix = 0; ix < erts_no_run_queues; ix++) { - ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); - erts_smp_runq_lock(rq); - rq->flags |= ERTS_RUNQ_FLG_CHK_CPU_BIND; - erts_smp_runq_unlock(rq); - wake_scheduler(rq, 0, 1); - }; + for (ix = 0; ix < erts_no_run_queues; ix++) { + ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); + erts_smp_runq_lock(rq); + rq->flags |= ERTS_RUNQ_FLG_CHK_CPU_BIND; + erts_smp_runq_unlock(rq); + wake_scheduler(rq, 0); } #else erts_sched_check_cpu_bind(erts_get_scheduler_data()); @@ -1652,15 +2587,15 @@ evacuate_run_queue(ErtsRunQueue *evac_rq, ErtsRunQueue *rq) erts_smp_runq_lock(evac_rq); - erts_smp_atomic32_bor(&evac_rq->scheduler->ssi->flags, - ERTS_SSI_FLG_SUSPENDED); + erts_smp_atomic32_read_bor_nob(&evac_rq->scheduler->ssi->flags, + ERTS_SSI_FLG_SUSPENDED); evac_rq->flags &= ~ERTS_RUNQ_FLGS_IMMIGRATE_QMASK; evac_rq->flags |= (ERTS_RUNQ_FLGS_EMIGRATE_QMASK | ERTS_RUNQ_FLGS_EVACUATE_QMASK | ERTS_RUNQ_FLG_SUSPENDED); - erts_smp_atomic32_bor(&evac_rq->info_flags, ERTS_RUNQ_IFLG_SUSPENDED); + erts_smp_atomic32_read_bor_nob(&evac_rq->info_flags, ERTS_RUNQ_IFLG_SUSPENDED); /* * Need to set up evacuation paths first since we * may release the run queue lock on evac_rq @@ -1763,7 +2698,7 @@ evacuate_run_queue(ErtsRunQueue *evac_rq, ErtsRunQueue *rq) if (notify_to_rq) smp_notify_inc_runq(rq); - wake_scheduler(evac_rq, 0, 1); + wake_scheduler(evac_rq, 0); } static int @@ -1909,7 +2844,7 @@ static ERTS_INLINE int check_possible_steal_victim(ErtsRunQueue *rq, int *rq_lockedp, int vix) { ErtsRunQueue *vrq = ERTS_RUNQ_IX(vix); - erts_aint32_t iflgs = erts_smp_atomic32_read(&vrq->info_flags); + erts_aint32_t iflgs = erts_smp_atomic32_read_nob(&vrq->info_flags); if (iflgs & ERTS_RUNQ_IFLG_NONEMPTY) return try_steal_task_from_victim(rq, rq_lockedp, vrq); else @@ -1921,9 +2856,6 @@ static int try_steal_task(ErtsRunQueue *rq) { int res, rq_locked, vix, active_rqs, blnc_rqs; - - if (erts_common_run_queue) - return 0; /* * We are not allowed to steal jobs to this run queue @@ -2061,7 +2993,7 @@ check_balance(ErtsRunQueue *c_rq) int forced, active, current_active, oowc, half_full_scheds, full_scheds, mmax_len, blnc_no_rqs, qix, pix, freds_hist_ix; - if (erts_smp_atomic32_xchg(&balance_info.checking_balance, 1)) { + if (erts_smp_atomic32_xchg_nob(&balance_info.checking_balance, 1)) { c_rq->check_balance_reds = INT_MAX; return; } @@ -2069,7 +3001,7 @@ check_balance(ErtsRunQueue *c_rq) get_no_runqs(NULL, &blnc_no_rqs); if (blnc_no_rqs == 1) { c_rq->check_balance_reds = INT_MAX; - erts_smp_atomic32_set(&balance_info.checking_balance, 0); + erts_smp_atomic32_set_nob(&balance_info.checking_balance, 0); return; } @@ -2077,7 +3009,7 @@ check_balance(ErtsRunQueue *c_rq) if (balance_info.halftime) { balance_info.halftime = 0; - erts_smp_atomic32_set(&balance_info.checking_balance, 0); + erts_smp_atomic32_set_nob(&balance_info.checking_balance, 0); ERTS_FOREACH_RUNQ(rq, { if (rq->waiting) @@ -2111,7 +3043,7 @@ check_balance(ErtsRunQueue *c_rq) erts_smp_mtx_unlock(&balance_info.update_mtx); erts_smp_runq_lock(c_rq); c_rq->check_balance_reds = INT_MAX; - erts_smp_atomic32_set(&balance_info.checking_balance, 0); + erts_smp_atomic32_set_nob(&balance_info.checking_balance, 0); return; } @@ -2215,6 +3147,9 @@ check_balance(ErtsRunQueue *c_rq) mmax_len = run_queue_info[qix].max_len; } + if (!erts_sched_compact_load) + goto all_active; + if (!forced && half_full_scheds != blnc_no_rqs) { int min = 1; if (min < half_full_scheds) @@ -2456,7 +3391,7 @@ erts_fprintf(stderr, "--------------------------------\n"); set_no_active_runqs(active); balance_info.halftime = 1; - erts_smp_atomic32_set(&balance_info.checking_balance, 0); + erts_smp_atomic32_set_nob(&balance_info.checking_balance, 0); /* Write migration paths and reset balance statistics in all queues */ for (qix = 0; qix < blnc_no_rqs; qix++) { @@ -2551,8 +3486,9 @@ erts_debug_nbalance(void) } void -erts_early_init_scheduling(void) +erts_early_init_scheduling(int no_schedulers) { + aux_work_timeout_early_init(no_schedulers); wakeup_other_limit = ERTS_WAKEUP_OTHER_LIMIT_MEDIUM; } @@ -2573,16 +3509,32 @@ erts_sched_set_wakeup_limit(char *str) return EINVAL; return 0; } - -void -erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) +static void +init_aux_work_data(ErtsAuxWorkData *awdp, ErtsSchedulerData *esdp) { - int ix, n; - -#ifndef ERTS_SMP - mrq = 0; + awdp->sched_id = esdp ? (int) esdp->no : 0; + awdp->esdp = esdp; + awdp->ssi = esdp ? esdp->ssi : NULL; +#ifdef ERTS_SMP + awdp->misc.thr_prgr = ERTS_THR_PRGR_VAL_WAITING; + awdp->dd.thr_prgr = ERTS_THR_PRGR_VAL_WAITING; + awdp->dd.completed_callback = NULL; + awdp->dd.completed_arg = NULL; +#endif +#ifdef ERTS_USE_ASYNC_READY_Q +#ifdef ERTS_SMP + awdp->async_ready.need_thr_prgr = 0; + awdp->async_ready.thr_prgr = ERTS_THR_PRGR_VAL_WAITING; +#endif + awdp->async_ready.queue = NULL; #endif +} + +void +erts_init_scheduling(int no_schedulers, int no_schedulers_online) +{ + int ix, n, no_ssi; init_misc_op_list_alloc(); @@ -2592,13 +3544,13 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) /* Create and initialize run queues */ - n = (int) (mrq ? no_schedulers : 1); + n = no_schedulers; erts_aligned_run_queues = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_RUNQS, sizeof(ErtsAlignedRunQueue) * n); #ifdef ERTS_SMP - erts_smp_atomic32_init(&no_empty_run_queues, 0); + erts_smp_atomic32_init_nob(&no_empty_run_queues, 0); #endif erts_no_run_queues = n; @@ -2608,7 +3560,7 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); rq->ix = ix; - erts_smp_atomic32_init(&rq->info_flags, ERTS_RUNQ_IFLG_NONEMPTY); + erts_smp_atomic32_init_nob(&rq->info_flags, ERTS_RUNQ_IFLG_NONEMPTY); /* make sure that the "extra" id correponds to the schedulers * id if the esdp->no <-> ix+1 mapping change. @@ -2617,14 +3569,9 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) erts_smp_mtx_init_x(&rq->mtx, "run_queue", make_small(ix + 1)); erts_smp_cnd_init(&rq->cnd); -#ifdef ERTS_SMP - erts_smp_spinlock_init(&rq->sleepers.lock, "run_queue_sleep_list"); - rq->sleepers.list = NULL; -#endif - rq->waiting = 0; rq->woken = 0; - rq->flags = !mrq ? ERTS_RUNQ_FLG_SHARED_RUNQ : 0; + rq->flags = 0; rq->check_balance_reds = ERTS_RUNQ_CALL_CHECK_BALANCE_REDS; rq->full_reds_history_sum = 0; for (rix = 0; rix < ERTS_FULL_REDS_HISTORY_SIZE; rix++) { @@ -2670,8 +3617,6 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) rq->ports.end = NULL; } - erts_common_run_queue = !mrq ? ERTS_RUNQ_IX(0) : NULL; - #ifdef ERTS_SMP if (erts_no_run_queues != 1) { @@ -2688,23 +3633,31 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) n = (int) no_schedulers; erts_no_schedulers = n; -#ifdef ERTS_SMP /* Create and initialize scheduler sleep info */ - +#ifdef ERTS_SMP + no_ssi = n+1; +#else + no_ssi = 1; +#endif aligned_sched_sleep_info = - erts_alloc_permanent_cache_aligned(ERTS_ALC_T_SCHDLR_SLP_INFO, - n * sizeof(ErtsAlignedSchedulerSleepInfo)); - - for (ix = 0; ix < n; ix++) { - ErtsSchedulerSleepInfo *ssi = ERTS_SCHED_SLEEP_INFO_IX(ix); + erts_alloc_permanent_cache_aligned( + ERTS_ALC_T_SCHDLR_SLP_INFO, + no_ssi*sizeof(ErtsAlignedSchedulerSleepInfo)); + for (ix = 0; ix < no_ssi; ix++) { + ErtsSchedulerSleepInfo *ssi = &aligned_sched_sleep_info[ix].ssi; +#ifdef ERTS_SMP #if 0 /* no need to initialize these... */ ssi->next = NULL; ssi->prev = NULL; #endif - erts_smp_atomic32_init(&ssi->flags, 0); + erts_smp_atomic32_init_nob(&ssi->flags, 0); ssi->event = NULL; /* initialized in sched_thread_func */ - erts_smp_atomic32_init(&ssi->aux_work, 0); +#endif + erts_atomic32_init_nob(&ssi->aux_work, 0); } + +#ifdef ERTS_SMP + aligned_sched_sleep_info++; #endif /* Create and initialize scheduler specific data */ @@ -2718,17 +3671,20 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) #ifdef ERTS_SMP erts_bits_init_state(&esdp->erl_bits_state); esdp->match_pseudo_process = NULL; - esdp->ssi = ERTS_SCHED_SLEEP_INFO_IX(ix); esdp->free_process = NULL; -#if HALFWORD_HEAP - /* Registers need to be heap allocated (correct memory range) for tracing to work */ - esdp->save_reg = erts_alloc(ERTS_ALC_T_BEAM_REGISTER, ERTS_X_REGS_ALLOCATED * sizeof(Eterm)); -#endif #endif + esdp->x_reg_array = + erts_alloc_permanent_cache_aligned(ERTS_ALC_T_BEAM_REGISTER, + ERTS_X_REGS_ALLOCATED * + sizeof(Eterm)); + esdp->f_reg_array = + erts_alloc_permanent_cache_aligned(ERTS_ALC_T_BEAM_REGISTER, + MAX_REG * sizeof(FloatDef)); #if !HEAP_ON_C_STACK esdp->num_tmp_heap_used = 0; #endif esdp->no = (Uint) ix+1; + esdp->ssi = ERTS_SCHED_SLEEP_INFO_IX(ix); esdp->current_process = NULL; esdp->current_port = NULL; @@ -2737,54 +3693,52 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) erts_init_atom_cache_map(&esdp->atom_cache_map); - if (erts_common_run_queue) { - esdp->run_queue = erts_common_run_queue; - esdp->run_queue->scheduler = NULL; - } - else { - esdp->run_queue = ERTS_RUNQ_IX(ix); - esdp->run_queue->scheduler = esdp; - } + esdp->run_queue = ERTS_RUNQ_IX(ix); + esdp->run_queue->scheduler = esdp; -#ifdef ERTS_SMP - erts_smp_atomic32_init(&esdp->chk_cpu_bind, 0); -#endif + init_aux_work_data(&esdp->aux_work_data, esdp); + init_sched_wall_time(&esdp->sched_wall_time); } + init_misc_aux_work(); +#if !HALFWORD_HEAP + init_swtreq_alloc(); +#endif + + #ifdef ERTS_SMP + + erts_atomic32_init_nob(&completed_dealloc_count, 0); /* debug only */ + + aux_thread_aux_work_data = + erts_alloc_permanent_cache_aligned(ERTS_ALC_T_SCHDLR_DATA, + sizeof(ErtsAuxWorkData)); + erts_smp_mtx_init(&schdlr_sspnd.mtx, "schdlr_sspnd"); erts_smp_cnd_init(&schdlr_sspnd.cnd); - erts_smp_atomic32_init(&schdlr_sspnd.changing, 0); + erts_smp_atomic32_init_nob(&schdlr_sspnd.changing, 0); schdlr_sspnd.online = no_schedulers_online; schdlr_sspnd.curr_online = no_schedulers; - erts_smp_atomic32_init(&schdlr_sspnd.msb.ongoing, 0); - erts_smp_atomic32_init(&schdlr_sspnd.active, no_schedulers); + schdlr_sspnd.msb.ongoing = 0; + erts_smp_atomic32_init_nob(&schdlr_sspnd.active, no_schedulers); schdlr_sspnd.msb.procs = NULL; - init_no_runqs(no_schedulers, - erts_common_run_queue ? 1 : no_schedulers_online); + init_no_runqs(no_schedulers, no_schedulers_online); balance_info.last_active_runqs = no_schedulers; erts_smp_mtx_init(&balance_info.update_mtx, "migration_info_update"); balance_info.forced_check_balance = 0; balance_info.halftime = 1; balance_info.full_reds_history_index = 0; - erts_smp_atomic32_init(&balance_info.checking_balance, 0); + erts_smp_atomic32_init_nob(&balance_info.checking_balance, 0); balance_info.prev_rise.active_runqs = 0; balance_info.prev_rise.max_len = 0; balance_info.prev_rise.reds = 0; balance_info.n = 0; if (no_schedulers_online < no_schedulers) { - if (erts_common_run_queue) { - for (ix = no_schedulers_online; ix < no_schedulers; ix++) - erts_smp_atomic32_bor(&ERTS_SCHED_SLEEP_INFO_IX(ix)->flags, - ERTS_SSI_FLG_SUSPENDED); - } - else { - for (ix = no_schedulers_online; ix < erts_no_run_queues; ix++) - evacuate_run_queue(ERTS_RUNQ_IX(ix), - ERTS_RUNQ_IX(ix % no_schedulers_online)); - } + for (ix = no_schedulers_online; ix < erts_no_run_queues; ix++) + evacuate_run_queue(ERTS_RUNQ_IX(ix), + ERTS_RUNQ_IX(ix % no_schedulers_online)); } schdlr_sspnd.wait_curr_online = no_schedulers_online; @@ -2792,7 +3746,7 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) ERTS_SCHDLR_SSPND_CHNG_SET((ERTS_SCHDLR_SSPND_CHNG_ONLN | ERTS_SCHDLR_SSPND_CHNG_WAITER), 0); - erts_smp_atomic32_init(&doing_sys_schedule, 0); + erts_smp_atomic32_init_nob(&doing_sys_schedule, 0); init_misc_aux_work(); @@ -2808,11 +3762,13 @@ erts_init_scheduling(int mrq, int no_schedulers, int no_schedulers_online) erts_no_schedulers = 1; #endif - erts_smp_atomic32_init(&function_calls, 0); + erts_smp_atomic32_init_nob(&function_calls, 0); /* init port tasks */ erts_port_task_init(); + aux_work_timeout_late_init(); + #ifndef ERTS_SMP #ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC erts_scheduler_data->verify_unused_temp_alloc @@ -2827,8 +3783,6 @@ ErtsRunQueue * erts_schedid2runq(Uint id) { int ix; - if (erts_common_run_queue) - return erts_common_run_queue; ix = (int) id - 1; ASSERT(0 <= ix && ix < erts_no_run_queues); return ERTS_RUNQ_IX(ix); @@ -2935,10 +3889,10 @@ int erts_get_max_no_executing_schedulers(void) { #ifdef ERTS_SMP - if (erts_smp_atomic32_read(&schdlr_sspnd.changing)) + if (erts_smp_atomic32_read_nob(&schdlr_sspnd.changing)) return (int) erts_no_schedulers; ERTS_THR_MEMORY_BARRIER; - return (int) erts_smp_atomic32_read(&schdlr_sspnd.active); + return (int) erts_smp_atomic32_read_nob(&schdlr_sspnd.active); #else return 1; #endif @@ -2947,18 +3901,6 @@ erts_get_max_no_executing_schedulers(void) #ifdef ERTS_SMP static void -susp_sched_prep_block(void *unused) -{ - erts_smp_mtx_unlock(&schdlr_sspnd.mtx); -} - -static void -susp_sched_resume_block(void *unused) -{ - erts_smp_mtx_lock(&schdlr_sspnd.mtx); -} - -static void scheduler_ix_resume_wake(Uint ix) { ErtsSchedulerSleepInfo *ssi = ERTS_SCHED_SLEEP_INFO_IX(ix); @@ -2968,7 +3910,7 @@ scheduler_ix_resume_wake(Uint ix) | ERTS_SSI_FLG_SUSPENDED); erts_aint32_t oflgs; do { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, 0, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_relb(&ssi->flags, 0, xflgs); if (oflgs == xflgs) { erts_sched_finish_poke(ssi, oflgs); break; @@ -2987,7 +3929,7 @@ sched_prep_spin_suspended(ErtsSchedulerSleepInfo *ssi, erts_aint32_t xpct) erts_aint32_t xflgs = xpct; do { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return nflgs; xflgs = oflgs; @@ -3037,7 +3979,7 @@ sched_set_suspended_sleeptype(ErtsSchedulerSleepInfo *ssi) erts_tse_reset(ssi->event); while (1) { - oflgs = erts_smp_atomic32_cmpxchg(&ssi->flags, nflgs, xflgs); + oflgs = erts_smp_atomic32_cmpxchg_acqb(&ssi->flags, nflgs, xflgs); if (oflgs == xflgs) return nflgs; if ((oflgs & (ERTS_SSI_FLG_SLEEPING @@ -3062,10 +4004,8 @@ suspend_scheduler(ErtsSchedulerData *esdp) long active_schedulers; int curr_online = 1; int wake = 0; -#if defined(ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK) \ - || defined(ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK) erts_aint32_t aux_work; -#endif + int thr_prgr_active = 1; /* * Schedulers may be suspended in two different ways: @@ -3087,20 +4027,22 @@ suspend_scheduler(ErtsSchedulerData *esdp) if (erts_system_profile_flags.scheduler) profile_scheduler(make_small(esdp->no), am_inactive); + sched_wall_time_change(esdp, 0); + erts_smp_mtx_lock(&schdlr_sspnd.mtx); flgs = sched_prep_spin_suspended(ssi, ERTS_SSI_FLG_SUSPENDED); if (flgs & ERTS_SSI_FLG_SUSPENDED) { - active_schedulers = erts_smp_atomic32_dectest(&schdlr_sspnd.active); + active_schedulers = erts_smp_atomic32_dec_read_nob(&schdlr_sspnd.active); ASSERT(active_schedulers >= 1); - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if (changing & ERTS_SCHDLR_SSPND_CHNG_MSB) { if (active_schedulers == schdlr_sspnd.msb.wait_active) wake = 1; if (active_schedulers == 1) { - changing = erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_MSB); + changing = erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_MSB); changing &= ~ERTS_SCHDLR_SSPND_CHNG_MSB; } } @@ -3122,8 +4064,8 @@ suspend_scheduler(ErtsSchedulerData *esdp) && schdlr_sspnd.curr_online == schdlr_sspnd.wait_curr_online) wake = 1; if (schdlr_sspnd.online == schdlr_sspnd.curr_online) { - changing = erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_ONLN); + changing = erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_ONLN); changing &= ~ERTS_SCHDLR_SSPND_CHNG_ONLN; } } @@ -3133,80 +4075,76 @@ suspend_scheduler(ErtsSchedulerData *esdp) wake = 0; } - flgs = erts_smp_atomic32_read_acqb(&ssi->flags); - if (!(flgs & ERTS_SSI_FLG_SUSPENDED)) - break; + if (curr_online && !ongoing_multi_scheduling_block()) { + flgs = erts_smp_atomic32_read_acqb(&ssi->flags); + if (!(flgs & ERTS_SSI_FLG_SUSPENDED)) + break; + } erts_smp_mtx_unlock(&schdlr_sspnd.mtx); - -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); - blockable_aux_work: - blockable_aux_work(esdp, ssi, aux_work); -#endif - - erts_smp_activity_begin(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); while (1) { erts_aint32_t flgs; -#ifdef ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK -#ifndef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); -#endif - nonblockable_aux_work(esdp, ssi, aux_work); -#endif - flgs = sched_spin_suspended(ssi, - ERTS_SCHED_SUSPEND_SLEEP_SPINCOUNT); - if (flgs == (ERTS_SSI_FLG_SLEEPING - | ERTS_SSI_FLG_WAITING - | ERTS_SSI_FLG_SUSPENDED)) { - flgs = sched_set_suspended_sleeptype(ssi); + aux_work = erts_atomic32_read_acqb(&ssi->aux_work); + if (aux_work) { + if (!thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 1); + sched_wall_time_change(esdp, 1); + } + aux_work = handle_aux_work(&esdp->aux_work_data, aux_work); + if (aux_work && erts_thr_progress_update(esdp)) + erts_thr_progress_leader_update(esdp); + } + + if (!aux_work) { + if (thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 0); + sched_wall_time_change(esdp, 0); + } + erts_thr_progress_prepare_wait(esdp); + flgs = sched_spin_suspended(ssi, + ERTS_SCHED_SUSPEND_SLEEP_SPINCOUNT); if (flgs == (ERTS_SSI_FLG_SLEEPING - | ERTS_SSI_FLG_TSE_SLEEPING | ERTS_SSI_FLG_WAITING | ERTS_SSI_FLG_SUSPENDED)) { - int res; - do { - res = erts_tse_wait(ssi->event); - } while (res == EINTR); + flgs = sched_set_suspended_sleeptype(ssi); + if (flgs == (ERTS_SSI_FLG_SLEEPING + | ERTS_SSI_FLG_TSE_SLEEPING + | ERTS_SSI_FLG_WAITING + | ERTS_SSI_FLG_SUSPENDED)) { + int res; + + do { + res = erts_tse_wait(ssi->event); + } while (res == EINTR); + } } + erts_thr_progress_finalize_wait(esdp); } flgs = sched_prep_spin_suspended(ssi, (ERTS_SSI_FLG_WAITING | ERTS_SSI_FLG_SUSPENDED)); if (!(flgs & ERTS_SSI_FLG_SUSPENDED)) break; - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if (changing & ~ERTS_SCHDLR_SSPND_CHNG_WAITER) break; - - -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = erts_smp_atomic32_read(&ssi->aux_work); - if (aux_work & ERTS_SSI_BLOCKABLE_AUX_WORK_MASK) { - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); - goto blockable_aux_work; - } -#endif - } - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, NULL, NULL, NULL); - erts_smp_mtx_lock(&schdlr_sspnd.mtx); - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); } - active_schedulers = erts_smp_atomic32_inctest(&schdlr_sspnd.active); - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + active_schedulers = erts_smp_atomic32_inc_read_nob(&schdlr_sspnd.active); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if ((changing & ERTS_SCHDLR_SSPND_CHNG_MSB) && schdlr_sspnd.online == active_schedulers) { - erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_MSB); + erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_MSB); } ASSERT(no <= schdlr_sspnd.online); - ASSERT(!erts_smp_atomic32_read(&schdlr_sspnd.msb.ongoing)); + ASSERT(!ongoing_multi_scheduling_block()); } @@ -3217,6 +4155,11 @@ suspend_scheduler(ErtsSchedulerData *esdp) if (erts_system_profile_flags.scheduler) profile_scheduler(make_small(esdp->no), am_active); + if (!thr_prgr_active) { + erts_thr_progress_active(esdp, thr_prgr_active = 1); + sched_wall_time_change(esdp, 1); + } + erts_smp_runq_lock(esdp->run_queue); non_empty_runq(esdp->run_queue); @@ -3235,7 +4178,7 @@ do { \ (RQ)->flags |= (ERTS_RUNQ_FLG_OUT_OF_WORK \ | ERTS_RUNQ_FLG_HALFTIME_OUT_OF_WORK); \ (RQ)->check_balance_reds = ERTS_RUNQ_CALL_CHECK_BALANCE_REDS; \ - erts_smp_atomic32_band(&(RQ)->info_flags, ~ERTS_RUNQ_IFLG_SUSPENDED);\ + erts_smp_atomic32_read_band_nob(&(RQ)->info_flags, ~ERTS_RUNQ_IFLG_SUSPENDED);\ for (pix__ = 0; pix__ < ERTS_NO_PROC_PRIO_LEVELS; pix__++) { \ (RQ)->procs.prio_info[pix__].max_len = 0; \ (RQ)->procs.prio_info[pix__].reds = 0; \ @@ -3279,7 +4222,7 @@ erts_schedulers_state(Uint *total, int res; erts_aint32_t changing; erts_smp_mtx_lock(&schdlr_sspnd.mtx); - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if (yield_allowed && (changing & ~ERTS_SCHDLR_SSPND_CHNG_WAITER)) res = ERTS_SCHDLR_SSPND_YIELD_RESTART; else { @@ -3299,18 +4242,22 @@ erts_set_schedulers_online(Process *p, Sint new_no, Sint *old_no) { - int ix, res, no, have_unlocked_plocks; + ErtsSchedulerData *esdp; + int ix, res, no, have_unlocked_plocks, end_wait; erts_aint32_t changing; if (new_no < 1 || erts_no_schedulers < new_no) return ERTS_SCHDLR_SSPND_EINVAL; + esdp = ERTS_PROC_GET_SCHDATA(p); + end_wait = 0; + erts_smp_mtx_lock(&schdlr_sspnd.mtx); have_unlocked_plocks = 0; no = (int) new_no; - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if (changing) { res = ERTS_SCHDLR_SSPND_YIELD_RESTART; } @@ -3330,10 +4277,6 @@ erts_set_schedulers_online(Process *p, for (ix = online; ix < no; ix++) erts_sched_poke(ERTS_SCHED_SLEEP_INFO_IX(ix)); } - else if (erts_common_run_queue) { - for (ix = online; ix < no; ix++) - scheduler_ix_resume_wake(ix); - } else { if (plocks) { have_unlocked_plocks = 1; @@ -3381,15 +4324,6 @@ erts_set_schedulers_online(Process *p, for (ix = no; ix < online; ix++) erts_sched_poke(ERTS_SCHED_SLEEP_INFO_IX(ix)); } - else if (erts_common_run_queue) { - for (ix = no; ix < online; ix++) { - ErtsSchedulerSleepInfo *ssi; - ssi = ERTS_SCHED_SLEEP_INFO_IX(ix); - erts_smp_atomic32_bor(&ssi->flags, - ERTS_SSI_FLG_SUSPENDED); - } - wake_all_schedulers(); - } else { if (plocks) { have_unlocked_plocks = 1; @@ -3416,32 +4350,42 @@ erts_set_schedulers_online(Process *p, erts_smp_mtx_lock(&schdlr_sspnd.mtx); for (ix = no; ix < online; ix++) { ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); - wake_scheduler(rq, 0, 1); + wake_scheduler(rq, 0); } } } - erts_smp_activity_begin(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); + if (schdlr_sspnd.curr_online != schdlr_sspnd.wait_curr_online) { + erts_smp_mtx_unlock(&schdlr_sspnd.mtx); + if (plocks && !have_unlocked_plocks) { + have_unlocked_plocks = 1; + erts_smp_proc_unlock(p, plocks); + } + erts_thr_progress_active(esdp, 0); + erts_thr_progress_prepare_wait(esdp); + end_wait = 1; + erts_smp_mtx_lock(&schdlr_sspnd.mtx); + } + while (schdlr_sspnd.curr_online != schdlr_sspnd.wait_curr_online) erts_smp_cnd_wait(&schdlr_sspnd.cnd, &schdlr_sspnd.mtx); - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); + ASSERT(res != ERTS_SCHDLR_SSPND_DONE ? (ERTS_SCHDLR_SSPND_CHNG_WAITER - & erts_smp_atomic32_read(&schdlr_sspnd.changing)) + & erts_smp_atomic32_read_nob(&schdlr_sspnd.changing)) : (ERTS_SCHDLR_SSPND_CHNG_WAITER - == erts_smp_atomic32_read(&schdlr_sspnd.changing))); - erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_WAITER); + == erts_smp_atomic32_read_nob(&schdlr_sspnd.changing))); + erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_WAITER); + } } erts_smp_mtx_unlock(&schdlr_sspnd.mtx); + if (end_wait) { + erts_thr_progress_finalize_wait(esdp); + erts_thr_progress_active(esdp, 1); + } if (have_unlocked_plocks) erts_smp_proc_lock(p, plocks); @@ -3456,7 +4400,7 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int all) ErtsProcList *plp; erts_smp_mtx_lock(&schdlr_sspnd.mtx); - changing = erts_smp_atomic32_read(&schdlr_sspnd.changing); + changing = erts_smp_atomic32_read_nob(&schdlr_sspnd.changing); if (changing) { res = ERTS_SCHDLR_SSPND_YIELD_RESTART; /* Yield */ } @@ -3466,7 +4410,7 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int all) plp->next = schdlr_sspnd.msb.procs; schdlr_sspnd.msb.procs = plp; p->flags |= F_HAVE_BLCKD_MSCHED; - ASSERT(erts_smp_atomic32_read(&schdlr_sspnd.active) == 1); + ASSERT(erts_smp_atomic32_read_nob(&schdlr_sspnd.active) == 1); ASSERT(p->scheduler_data->no == 1); res = ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED; } @@ -3477,11 +4421,11 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int all) have_unlocked_plocks = 1; erts_smp_proc_unlock(p, plocks); } - ASSERT(0 == erts_smp_atomic32_read(&schdlr_sspnd.msb.ongoing)); - erts_smp_atomic32_set(&schdlr_sspnd.msb.ongoing, 1); + ASSERT(!ongoing_multi_scheduling_block()); + schdlr_sspnd.msb.ongoing = 1; if (online == 1) { res = ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED; - ASSERT(erts_smp_atomic32_read(&schdlr_sspnd.active) == 1); + ASSERT(erts_smp_atomic32_read_nob(&schdlr_sspnd.active) == 1); ASSERT(p->scheduler_data->no == 1); } else { @@ -3499,51 +4443,65 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int all) res = ERTS_SCHDLR_SSPND_YIELD_DONE_MSCHED_BLOCKED; schdlr_sspnd.msb.wait_active = 2; } - if (erts_common_run_queue) { - for (ix = 1; ix < online; ix++) - erts_smp_atomic32_bor(&ERTS_SCHED_SLEEP_INFO_IX(ix)->flags, - ERTS_SSI_FLG_SUSPENDED); - wake_all_schedulers(); + + erts_smp_mtx_unlock(&schdlr_sspnd.mtx); + erts_smp_mtx_lock(&balance_info.update_mtx); + set_no_used_runqs(1); + for (ix = 0; ix < online; ix++) { + ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); + erts_smp_runq_lock(rq); + ASSERT(!(rq->flags & ERTS_RUNQ_FLG_SUSPENDED)); + ERTS_RUNQ_RESET_MIGRATION_PATHS(rq, 0x7); + erts_smp_runq_unlock(rq); } - else { + /* + * Evacuate all activities in all other run queues + * into the first run queue. Note order is important, + * online run queues has to be evacuated last. + */ + for (ix = erts_no_run_queues-1; ix >= 1; ix--) + evacuate_run_queue(ERTS_RUNQ_IX(ix), ERTS_RUNQ_IX(0)); + erts_smp_mtx_unlock(&balance_info.update_mtx); + erts_smp_mtx_lock(&schdlr_sspnd.mtx); + + if (erts_smp_atomic32_read_nob(&schdlr_sspnd.active) + != schdlr_sspnd.msb.wait_active) { + ErtsSchedulerData *esdp; + erts_smp_mtx_unlock(&schdlr_sspnd.mtx); - erts_smp_mtx_lock(&balance_info.update_mtx); - set_no_used_runqs(1); - for (ix = 0; ix < online; ix++) { - ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); - erts_smp_runq_lock(rq); - ASSERT(!(rq->flags & ERTS_RUNQ_FLG_SUSPENDED)); - ERTS_RUNQ_RESET_MIGRATION_PATHS(rq, 0x7); - erts_smp_runq_unlock(rq); + + if (plocks && !have_unlocked_plocks) { + have_unlocked_plocks = 1; + erts_smp_proc_unlock(p, plocks); } - /* - * Evacuate all activities in all other run queues - * into the first run queue. Note order is important, - * online run queues has to be evacuated last. - */ - for (ix = erts_no_run_queues-1; ix >= 1; ix--) - evacuate_run_queue(ERTS_RUNQ_IX(ix), ERTS_RUNQ_IX(0)); - erts_smp_mtx_unlock(&balance_info.update_mtx); + + esdp = ERTS_PROC_GET_SCHDATA(p); + + erts_thr_progress_active(esdp, 0); + erts_thr_progress_prepare_wait(esdp); + + erts_smp_mtx_lock(&schdlr_sspnd.mtx); + + while (erts_smp_atomic32_read_nob(&schdlr_sspnd.active) + != schdlr_sspnd.msb.wait_active) + erts_smp_cnd_wait(&schdlr_sspnd.cnd, + &schdlr_sspnd.mtx); + + erts_smp_mtx_unlock(&schdlr_sspnd.mtx); + + erts_thr_progress_active(esdp, 1); + erts_thr_progress_finalize_wait(esdp); + erts_smp_mtx_lock(&schdlr_sspnd.mtx); + } - erts_smp_activity_begin(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); - while (erts_smp_atomic32_read(&schdlr_sspnd.active) - != schdlr_sspnd.msb.wait_active) - erts_smp_cnd_wait(&schdlr_sspnd.cnd, &schdlr_sspnd.mtx); - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); ASSERT(res != ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED ? (ERTS_SCHDLR_SSPND_CHNG_WAITER - & erts_smp_atomic32_read(&schdlr_sspnd.changing)) + & erts_smp_atomic32_read_nob(&schdlr_sspnd.changing)) : (ERTS_SCHDLR_SSPND_CHNG_WAITER - == erts_smp_atomic32_read(&schdlr_sspnd.changing))); - erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_WAITER); + == erts_smp_atomic32_read_nob(&schdlr_sspnd.changing))); + erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_WAITER); } plp = proclist_create(p); plp->next = schdlr_sspnd.msb.procs; @@ -3610,18 +4568,12 @@ erts_block_multi_scheduling(Process *p, ErtsProcLocks plocks, int on, int all) }); #endif p->flags &= ~F_HAVE_BLCKD_MSCHED; - erts_smp_atomic32_set(&schdlr_sspnd.msb.ongoing, 0); + schdlr_sspnd.msb.ongoing = 0; if (schdlr_sspnd.online == 1) { /* No schedulers to resume */ - ASSERT(erts_smp_atomic32_read(&schdlr_sspnd.active) == 1); + ASSERT(erts_smp_atomic32_read_nob(&schdlr_sspnd.active) == 1); ERTS_SCHDLR_SSPND_CHNG_SET(0, ERTS_SCHDLR_SSPND_CHNG_MSB); } - else if (erts_common_run_queue) { - for (ix = 1; ix < schdlr_sspnd.online; ix++) - erts_smp_atomic32_band(&ERTS_SCHED_SLEEP_INFO_IX(ix)->flags, - ~ERTS_SSI_FLG_SUSPENDED); - wake_all_schedulers(); - } else { int online = schdlr_sspnd.online; erts_smp_mtx_unlock(&schdlr_sspnd.mtx); @@ -3669,7 +4621,7 @@ void erts_dbg_multi_scheduling_return_trap(Process *p, Eterm return_value) { if (return_value == am_blocked) { - erts_aint32_t active = erts_smp_atomic32_read(&schdlr_sspnd.active); + erts_aint32_t active = erts_smp_atomic32_read_nob(&schdlr_sspnd.active); ASSERT(1 <= active && active <= 2); ASSERT(ERTS_PROC_GET_SCHDATA(p)->no == 1); } @@ -3724,8 +4676,19 @@ erts_multi_scheduling_blockers(Process *p) static void * sched_thread_func(void *vesdp) { + ErtsThrPrgrCallbacks callbacks; + ErtsSchedulerData *esdp = vesdp; + Uint no = esdp->no; #ifdef ERTS_SMP - Uint no = ((ErtsSchedulerData *) vesdp)->no; + ERTS_SCHED_SLEEP_INFO_IX(no - 1)->event = erts_tse_fetch(); + callbacks.arg = (void *) esdp->ssi; + callbacks.wakeup = thr_prgr_wakeup; + callbacks.prepare_wait = thr_prgr_prep_wait; + callbacks.wait = thr_prgr_wait; + callbacks.finalize_wait = thr_prgr_fin_wait; + + erts_thr_progress_register_managed_thread(esdp, &callbacks, 0); + erts_alloc_register_scheduler(vesdp); #endif #ifdef ERTS_ENABLE_LOCK_CHECK { @@ -3734,65 +4697,71 @@ sched_thread_func(void *vesdp) erts_lc_set_thread_name(&buf[0]); } #endif - erts_alloc_reg_scheduler_id(no); erts_tsd_set(sched_data_key, vesdp); #ifdef ERTS_SMP +#if HAVE_ERTS_MSEG + erts_mseg_late_init(); +#endif +#if ERTS_USE_ASYNC_READY_Q + esdp->aux_work_data.async_ready.queue = erts_get_async_ready_queue(no); +#endif - erts_sched_init_check_cpu_bind((ErtsSchedulerData *) vesdp); + erts_sched_init_check_cpu_bind(esdp); erts_proc_lock_prepare_proc_lock_waiter(); - ERTS_SCHED_SLEEP_INFO_IX(no - 1)->event = erts_tse_fetch(); - - #endif - erts_register_blockable_thread(); + #ifdef HIPE hipe_thread_signal_init(); #endif erts_thread_init_float(); + + if (no == 1) { + erts_thr_progress_active(esdp, 0); + erts_thr_progress_prepare_wait(esdp); + } + erts_smp_mtx_lock(&schdlr_sspnd.mtx); - ASSERT(erts_smp_atomic32_read(&schdlr_sspnd.changing) + ASSERT(erts_smp_atomic32_read_nob(&schdlr_sspnd.changing) & ERTS_SCHDLR_SSPND_CHNG_ONLN); if (--schdlr_sspnd.curr_online == schdlr_sspnd.wait_curr_online) { - erts_smp_atomic32_band(&schdlr_sspnd.changing, - ~ERTS_SCHDLR_SSPND_CHNG_ONLN); - if (((ErtsSchedulerData *) vesdp)->no != 1) + erts_smp_atomic32_read_band_nob(&schdlr_sspnd.changing, + ~ERTS_SCHDLR_SSPND_CHNG_ONLN); + if (no != 1) erts_smp_cnd_signal(&schdlr_sspnd.cnd); } - if (((ErtsSchedulerData *) vesdp)->no == 1) { - if (schdlr_sspnd.curr_online != schdlr_sspnd.wait_curr_online) { - erts_smp_activity_begin(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); - while (schdlr_sspnd.curr_online != schdlr_sspnd.wait_curr_online) - erts_smp_cnd_wait(&schdlr_sspnd.cnd, &schdlr_sspnd.mtx); - erts_smp_activity_end(ERTS_ACTIVITY_WAIT, - susp_sched_prep_block, - susp_sched_resume_block, - NULL); - } + if (no == 1) { + while (schdlr_sspnd.curr_online != schdlr_sspnd.wait_curr_online) + erts_smp_cnd_wait(&schdlr_sspnd.cnd, &schdlr_sspnd.mtx); ERTS_SCHDLR_SSPND_CHNG_SET(0, ERTS_SCHDLR_SSPND_CHNG_WAITER); } erts_smp_mtx_unlock(&schdlr_sspnd.mtx); + if (no == 1) { + erts_thr_progress_finalize_wait(esdp); + erts_thr_progress_active(esdp, 1); + } + #ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC - ((ErtsSchedulerData *) vesdp)->verify_unused_temp_alloc + esdp->verify_unused_temp_alloc = erts_alloc_get_verify_unused_temp_alloc( - &((ErtsSchedulerData *) vesdp)->verify_unused_temp_alloc_data); + &esdp->verify_unused_temp_alloc_data); ERTS_VERIFY_UNUSED_TEMP_ALLOC(NULL); #endif process_main(); /* No schedulers should *ever* terminate */ - erl_exit(ERTS_ABORT_EXIT, "Scheduler thread number %beu terminated\n", - ((ErtsSchedulerData *) vesdp)->no); + erl_exit(ERTS_ABORT_EXIT, + "Scheduler thread number %beu terminated\n", + no); return NULL; } +static ethr_tid aux_tid; + void erts_start_schedulers(void) { @@ -3812,8 +4781,6 @@ erts_start_schedulers(void) res = ENOTSUP; } - erts_block_system(0); - while (actual < wanted) { ErtsSchedulerData *esdp = ERTS_SCHEDULER_IX(actual); actual++; @@ -3826,7 +4793,12 @@ erts_start_schedulers(void) } erts_no_schedulers = actual; - erts_release_system(); + + ERTS_THR_MEMORY_BARRIER; + + res = ethr_thr_create(&aux_tid, aux_thread, NULL, &opts); + if (res != 0) + erl_exit(1, "Failed to create aux thread\n"); if (actual < 1) erl_exit(1, @@ -4280,7 +5252,7 @@ suspend_process_2(BIF_ALIST_2) /* This is really a piece of cake without SMP support... */ if (!smon->active) { - suspend_process(erts_common_run_queue, suspendee); + suspend_process(ERTS_RUNQ_IX(0), suspendee); smon->active++; res = am_true; } @@ -4850,8 +5822,6 @@ erts_proc_migrate(Process *p, ErtsProcLocks *plcks, || from_locked); ERTS_SMP_LC_CHK_RUNQ_LOCK(from_rq, *from_locked); ERTS_SMP_LC_CHK_RUNQ_LOCK(to_rq, *to_locked); - - ASSERT(!erts_common_run_queue); /* * If we have the lock on the run queue to migrate to, @@ -5002,25 +5972,17 @@ erts_process_status(Process *c_p, ErtsProcLocks c_p_locks, int i; ErtsSchedulerData *esdp; - if (erts_common_run_queue) - erts_smp_runq_lock(erts_common_run_queue); - for (i = 0; i < erts_no_schedulers; i++) { esdp = ERTS_SCHEDULER_IX(i); - if (!erts_common_run_queue) - erts_smp_runq_lock(esdp->run_queue); + erts_smp_runq_lock(esdp->run_queue); if (esdp->free_process && esdp->free_process->id == rpid) { res = am_free; - if (!erts_common_run_queue) - erts_smp_runq_unlock(esdp->run_queue); + erts_smp_runq_unlock(esdp->run_queue); break; } - if (!erts_common_run_queue) - erts_smp_runq_unlock(esdp->run_queue); + erts_smp_runq_unlock(esdp->run_queue); } - if (erts_common_run_queue) - erts_smp_runq_unlock(erts_common_run_queue); #endif } @@ -5187,7 +6149,7 @@ Process *schedule(Process *p, int calls) input_reductions = INPUT_REDUCTIONS; } - ERTS_SMP_LC_ASSERT(!ERTS_LC_IS_BLOCKING); + ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking()); /* * Clean up after the process being scheduled out. @@ -5214,7 +6176,7 @@ Process *schedule(Process *p, int calls) reds = ERTS_PROC_MIN_CONTEXT_SWITCH_REDS_COST; esdp->virtual_reds = 0; - fcalls = (int) erts_smp_atomic32_addtest(&function_calls, reds); + fcalls = (int) erts_smp_atomic32_add_read_acqb(&function_calls, reds); ASSERT(esdp && esdp == erts_get_scheduler_data()); rq = erts_get_runq_current(esdp); @@ -5325,17 +6287,16 @@ Process *schedule(Process *p, int calls) } - ERTS_SMP_LC_ASSERT(!ERTS_LC_IS_BLOCKING); + ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking()); + check_activities_to_run: { #ifdef ERTS_SMP - if (!(rq->flags & ERTS_RUNQ_FLG_SHARED_RUNQ) - && rq->check_balance_reds <= 0) { + if (rq->check_balance_reds <= 0) check_balance(rq); - } - ERTS_SMP_LC_ASSERT(!ERTS_LC_IS_BLOCKING); + ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking()); ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); if (rq->flags & ERTS_RUNQ_FLGS_IMMIGRATE_QMASK) @@ -5343,58 +6304,49 @@ Process *schedule(Process *p, int calls) continue_check_activities_to_run: - if (rq->flags & (ERTS_RUNQ_FLG_SHARED_RUNQ - | ERTS_RUNQ_FLG_CHK_CPU_BIND + if (rq->flags & (ERTS_RUNQ_FLG_CHK_CPU_BIND | ERTS_RUNQ_FLG_SUSPENDED)) { - if ((rq->flags & ERTS_RUNQ_FLG_SUSPENDED) - || (erts_smp_atomic32_read_acqb(&esdp->ssi->flags) - & ERTS_SSI_FLG_SUSPENDED)) { - ASSERT(erts_smp_atomic32_read(&esdp->ssi->flags) + if (rq->flags & ERTS_RUNQ_FLG_SUSPENDED) { + ASSERT(erts_smp_atomic32_read_nob(&esdp->ssi->flags) & ERTS_SSI_FLG_SUSPENDED); suspend_scheduler(esdp); } - if ((rq->flags & ERTS_RUNQ_FLG_CHK_CPU_BIND) - || erts_smp_atomic32_read_acqb(&esdp->chk_cpu_bind)) { + if (rq->flags & ERTS_RUNQ_FLG_CHK_CPU_BIND) erts_sched_check_cpu_bind(esdp); - } } -#if defined(ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK) \ - || defined(ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK) { - ErtsSchedulerSleepInfo *ssi = esdp->ssi; - erts_aint32_t aux_work = erts_smp_atomic32_read(&ssi->aux_work); - if (aux_work) { + erts_aint32_t aux_work; + int leader_update = erts_thr_progress_update(esdp); + aux_work = erts_atomic32_read_acqb(&esdp->ssi->aux_work); + if (aux_work | leader_update) { erts_smp_runq_unlock(rq); -#ifdef ERTS_SCHED_NEED_BLOCKABLE_AUX_WORK - aux_work = blockable_aux_work(esdp, ssi, aux_work); -#endif -#ifdef ERTS_SCHED_NEED_NONBLOCKABLE_AUX_WORK - nonblockable_aux_work(esdp, ssi, aux_work); -#endif + if (leader_update) + erts_thr_progress_leader_update(esdp); + if (aux_work) + handle_aux_work(&esdp->aux_work_data, aux_work); erts_smp_runq_lock(rq); } } -#endif - erts_smp_chk_system_block(prepare_for_block, - resume_after_block, - (void *) rq); - - ERTS_SMP_LC_ASSERT(!ERTS_LC_IS_BLOCKING); + ERTS_SMP_LC_ASSERT(!erts_thr_progress_is_blocking()); ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); -#endif +#else /* ERTS_SMP */ + { + erts_aint32_t aux_work; + aux_work = erts_atomic32_read_acqb(&esdp->ssi->aux_work); + if (aux_work) + handle_aux_work(&esdp->aux_work_data, aux_work); + } +#endif /* ERTS_SMP */ ASSERT(rq->len == rq->procs.len + rq->ports.info.len); -#ifndef ERTS_SMP + if (rq->len == 0 && !rq->misc.start) { - if (rq->len == 0 && !rq->misc.start) - goto do_sys_schedule; +#ifdef ERTS_SMP -#else /* ERTS_SMP */ - if (rq->len == 0 && !rq->misc.start) { ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); rq->wakeup_other = 0; @@ -5402,16 +6354,11 @@ Process *schedule(Process *p, int calls) empty_runq(rq); - if (rq->flags & (ERTS_RUNQ_FLG_SHARED_RUNQ - | ERTS_RUNQ_FLG_SUSPENDED)) { - if ((rq->flags & ERTS_RUNQ_FLG_SUSPENDED) - || (erts_smp_atomic32_read_acqb(&esdp->ssi->flags) - & ERTS_SSI_FLG_SUSPENDED)) { - ASSERT(erts_smp_atomic32_read(&esdp->ssi->flags) - & ERTS_SSI_FLG_SUSPENDED); - non_empty_runq(rq); - goto continue_check_activities_to_run; - } + if (rq->flags & ERTS_RUNQ_FLG_SUSPENDED) { + ASSERT(erts_smp_atomic32_read_nob(&esdp->ssi->flags) + & ERTS_SSI_FLG_SUSPENDED); + non_empty_runq(rq); + goto continue_check_activities_to_run; } else if (!(rq->flags & ERTS_RUNQ_FLG_INACTIVE)) { /* @@ -5425,26 +6372,17 @@ Process *schedule(Process *p, int calls) } } +#endif + scheduler_wait(&fcalls, esdp, rq); +#ifdef ERTS_SMP non_empty_runq(rq); +#endif goto check_activities_to_run; } - else -#endif /* ERTS_SMP */ - if (fcalls > input_reductions && prepare_for_sys_schedule()) { - int runnable; - -#ifdef ERTS_SMP - runnable = 1; -#else - do_sys_schedule: - runnable = rq->len != 0; - if (!runnable) - sched_waiting_sys(esdp->no, rq); -#endif - + else if (fcalls > input_reductions && prepare_for_sys_schedule()) { /* * Schedule system-level activities. */ @@ -5454,11 +6392,11 @@ Process *schedule(Process *p, int calls) ASSERT(!erts_port_task_have_outstanding_io_tasks()); -#ifdef ERTS_SMP - /* erts_sys_schedule_interrupt(0); */ +#if 0 /* Not needed since we wont wait in sys schedule */ + erts_sys_schedule_interrupt(0); #endif erts_smp_runq_unlock(rq); - erl_sys_schedule(runnable); + erl_sys_schedule(1); dt = erts_do_time_read_and_reset(); if (dt) erts_bump_timer(dt); #ifdef ERTS_SMP @@ -5466,8 +6404,6 @@ Process *schedule(Process *p, int calls) clear_sys_scheduling(); goto continue_check_activities_to_run; #else - if (!runnable) - sched_active_sys(esdp->no, rq); goto check_activities_to_run; #endif } @@ -5487,11 +6423,7 @@ Process *schedule(Process *p, int calls) else if (rq->wakeup_other < wakeup_other_limit) rq->wakeup_other += rq->len*wo_reds + ERTS_WAKEUP_OTHER_FIXED_INC; else { - if (erts_common_run_queue) { - if (erts_common_run_queue->waiting) - wake_scheduler(erts_common_run_queue, 0, 1); - } - else if (erts_smp_atomic32_read_acqb(&no_empty_run_queues) != 0) { + if (erts_smp_atomic32_read_acqb(&no_empty_run_queues) != 0) { wake_scheduler_on_empty_runq(rq); rq->wakeup_other = 0; } @@ -5715,14 +6647,14 @@ erts_sched_stat_modify(int what) int ix; switch (what) { case ERTS_SCHED_STAT_MODIFY_ENABLE: - erts_smp_block_system(0); + erts_smp_thr_progress_block(); erts_sched_stat.enabled = 1; - erts_smp_release_system(); + erts_smp_thr_progress_unblock(); break; case ERTS_SCHED_STAT_MODIFY_DISABLE: - erts_smp_block_system(0); + erts_smp_thr_progress_block(); erts_sched_stat.enabled = 1; - erts_smp_release_system(); + erts_smp_thr_progress_unblock(); break; case ERTS_SCHED_STAT_MODIFY_CLEAR: erts_smp_spin_lock(&erts_sched_stat.lock); @@ -5782,20 +6714,9 @@ erts_sched_stat_term(Process *p, int total) void erts_schedule_misc_op(void (*func)(void *), void *arg) { - ErtsRunQueue *rq; - ErtsMiscOpList *molp = misc_op_list_alloc(); ErtsSchedulerData *esdp = erts_get_scheduler_data(); - - if (esdp) { - rq = esdp->run_queue; - } else { - /* - * This can only happen when the sys msg dispatcher - * thread schedules misc ops (this happens *very* - * seldom; only when trace drivers are unloaded). - */ - rq = ERTS_RUNQ_IX(0); - } + ErtsRunQueue *rq = esdp ? esdp->run_queue : ERTS_RUNQ_IX(0); + ErtsMiscOpList *molp = misc_op_list_alloc(); erts_smp_runq_lock(rq); @@ -5888,7 +6809,7 @@ erts_get_exact_total_reductions(Process *c_p, Uint *redsp, Uint *diffp) * Wait for other schedulers to schedule out their processes * and update 'reductions'. */ - erts_smp_block_system(0); + erts_smp_thr_progress_block(); for (reds = 0, ix = 0; ix < erts_no_run_queues; ix++) reds += ERTS_RUNQ_IX(ix)->procs.reductions; if (redsp) @@ -5896,7 +6817,7 @@ erts_get_exact_total_reductions(Process *c_p, Uint *redsp, Uint *diffp) if (diffp) *diffp = reds - last_exact_reductions; last_exact_reductions = reds; - erts_smp_release_system(); + erts_smp_thr_progress_unblock(); erts_smp_proc_lock(c_p, ERTS_PROC_LOCK_MAIN); } @@ -5951,7 +6872,7 @@ erts_test_next_pid(int set, Uint next) Uint erts_process_count(void) { - erts_aint32_t res = erts_smp_atomic32_read(&process_count); + erts_aint32_t res = erts_smp_atomic32_read_nob(&process_count); ASSERT(res >= 0); return (Uint) res; } @@ -6000,7 +6921,7 @@ alloc_process(void) ASSERT(!process_tab[p_next]); process_tab[p_next] = p; - erts_smp_atomic32_inc(&process_count); + erts_smp_atomic32_inc_nob(&process_count); p->id = make_internal_pid(p_serial << p_serial_shift | p_next); if (p->id == ERTS_INVALID_PID) { /* Do not use the invalid pid; change serial */ @@ -6101,7 +7022,9 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). goto error; } +#ifdef BM_COUNTERS processes_busy++; +#endif BM_COUNT(processes_spawned); #ifndef HYBRID @@ -6126,7 +7049,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->min_heap_size = H_MIN_SIZE; p->min_vheap_size = BIN_VH_MIN_SIZE; p->prio = PRIORITY_NORMAL; - p->max_gen_gcs = (Uint16) erts_smp_atomic32_read(&erts_max_gen_gcs); + p->max_gen_gcs = (Uint16) erts_smp_atomic32_read_nob(&erts_max_gen_gcs); } p->skipped = 0; ASSERT(p->min_heap_size == erts_next_heap_size(p->min_heap_size, 0)); @@ -6349,7 +7272,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->pending_exit.bp = NULL; #endif -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) p->fp_exception = 0; #endif @@ -6523,7 +7446,7 @@ void erts_init_empty_process(Process *p) p->run_queue = ERTS_RUNQ_IX(0); #endif -#if !defined(NO_FPE_SIGNALS) +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) p->fp_exception = 0; #endif @@ -7337,15 +8260,6 @@ static void doit_exit_link(ErtsLink *lnk, void *vpcontext) if (rlnk) erts_destroy_link(rlnk); erts_deref_dist_entry(dep); - } else { -#ifndef ERTS_SMP - /* XXX Is this possible? Shouldn't this link - previously have been removed if the node - had previously been disconnected. */ - ASSERT(0); -#endif - /* This is possible when smp support has been enabled, - and dist port and process exits simultaneously. */ } break; @@ -7583,8 +8497,8 @@ continue_exit_process(Process *p p->status_flags = 0; #endif process_tab[pix] = NULL; /* Time of death! */ - ASSERT(erts_smp_atomic32_read(&process_count) > 0); - erts_smp_atomic32_dec(&process_count); + ASSERT(erts_smp_atomic32_read_nob(&process_count) > 0); + erts_smp_atomic32_dec_nob(&process_count); #ifdef ERTS_SMP erts_pix_unlock(pix_lock); @@ -7624,7 +8538,9 @@ continue_exit_process(Process *p pbt = ERTS_PROC_SET_CALL_TIME(p, ERTS_PROC_LOCKS_ALL, NULL); erts_smp_proc_unlock(p, ERTS_PROC_LOCKS_ALL); +#ifdef BM_COUNTERS processes_busy--; +#endif if (dep) { erts_do_net_exits(dep, reason); @@ -8701,6 +9617,22 @@ init_processes_bif(void) * Debug stuff */ +#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK) +int +erts_dbg_check_halloc_lock(Process *p) +{ + if (ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks(p)) + return 1; + if (p->id == ERTS_INVALID_PID) + return 1; + if (p->scheduler_data && p == p->scheduler_data->match_pseudo_process) + return 1; + if (erts_thr_progress_is_blocking()) + return 1; + return 0; +} +#endif + Eterm erts_debug_processes(Process *c_p) { |