diff options
Diffstat (limited to 'erts/emulator/beam/erl_process.c')
-rw-r--r-- | erts/emulator/beam/erl_process.c | 411 |
1 files changed, 235 insertions, 176 deletions
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index d2185c4fbc..d485affa3b 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1996-2014. All Rights Reserved. + * Copyright Ericsson AB 1996-2016. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -43,6 +43,7 @@ #include "erl_thr_queue.h" #include "erl_async.h" #include "dtrace-wrapper.h" +#include "lttng-wrapper.h" #include "erl_ptab.h" #include "erl_bif_unique.h" #define ERTS_WANT_TIMER_WHEEL_API @@ -443,7 +444,8 @@ int erts_system_profile_ts_type = ERTS_TRACE_FLG_NOW_TIMESTAMP; typedef enum { ERTS_PSTT_GC, /* Garbage Collect */ ERTS_PSTT_CPC, /* Check Process Code */ - ERTS_PSTT_COHMQ /* Change off heap message queue */ + ERTS_PSTT_COHMQ, /* Change off heap message queue */ + ERTS_PSTT_FTMQ /* Flush trace msg queue */ } ErtsProcSysTaskType; #define ERTS_MAX_PROC_SYS_TASK_ARGS 2 @@ -687,45 +689,36 @@ erts_pre_init_process(void) = "DEBUG_WAIT_COMPLETED"; #ifdef ERTS_ENABLE_LOCK_CHECK - { - int ix; - erts_psd_required_locks[ERTS_PSD_ERROR_HANDLER].get_locks - = ERTS_PSD_ERROR_HANDLER_BUF_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_ERROR_HANDLER].set_locks - = ERTS_PSD_ERROR_HANDLER_BUF_SET_LOCKS; + erts_psd_required_locks[ERTS_PSD_ERROR_HANDLER].get_locks + = ERTS_PSD_ERROR_HANDLER_BUF_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_ERROR_HANDLER].set_locks + = ERTS_PSD_ERROR_HANDLER_BUF_SET_LOCKS; - erts_psd_required_locks[ERTS_PSD_SAVED_CALLS_BUF].get_locks - = ERTS_PSD_SAVED_CALLS_BUF_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_SAVED_CALLS_BUF].set_locks - = ERTS_PSD_SAVED_CALLS_BUF_SET_LOCKS; + erts_psd_required_locks[ERTS_PSD_SAVED_CALLS_BUF].get_locks + = ERTS_PSD_SAVED_CALLS_BUF_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_SAVED_CALLS_BUF].set_locks + = ERTS_PSD_SAVED_CALLS_BUF_SET_LOCKS; - erts_psd_required_locks[ERTS_PSD_SCHED_ID].get_locks - = ERTS_PSD_SCHED_ID_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_SCHED_ID].set_locks - = ERTS_PSD_SCHED_ID_SET_LOCKS; + erts_psd_required_locks[ERTS_PSD_SCHED_ID].get_locks + = ERTS_PSD_SCHED_ID_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_SCHED_ID].set_locks + = ERTS_PSD_SCHED_ID_SET_LOCKS; - erts_psd_required_locks[ERTS_PSD_CALL_TIME_BP].get_locks - = ERTS_PSD_CALL_TIME_BP_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_CALL_TIME_BP].set_locks - = ERTS_PSD_CALL_TIME_BP_SET_LOCKS; + erts_psd_required_locks[ERTS_PSD_CALL_TIME_BP].get_locks + = ERTS_PSD_CALL_TIME_BP_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_CALL_TIME_BP].set_locks + = ERTS_PSD_CALL_TIME_BP_SET_LOCKS; - erts_psd_required_locks[ERTS_PSD_DELAYED_GC_TASK_QS].get_locks - = ERTS_PSD_DELAYED_GC_TASK_QS_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_DELAYED_GC_TASK_QS].set_locks - = ERTS_PSD_DELAYED_GC_TASK_QS_SET_LOCKS; + erts_psd_required_locks[ERTS_PSD_DELAYED_GC_TASK_QS].get_locks + = ERTS_PSD_DELAYED_GC_TASK_QS_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_DELAYED_GC_TASK_QS].set_locks + = ERTS_PSD_DELAYED_GC_TASK_QS_SET_LOCKS; - erts_psd_required_locks[ERTS_PSD_NIF_TRAP_EXPORT].get_locks - = ERTS_PSD_NIF_TRAP_EXPORT_GET_LOCKS; - erts_psd_required_locks[ERTS_PSD_NIF_TRAP_EXPORT].set_locks - = ERTS_PSD_NIF_TRAP_EXPORT_SET_LOCKS; - - /* Check that we have locks for all entries */ - for (ix = 0; ix < ERTS_PSD_SIZE; ix++) { - ERTS_SMP_LC_ASSERT(erts_psd_required_locks[ix].get_locks); - ERTS_SMP_LC_ASSERT(erts_psd_required_locks[ix].set_locks); - } - } + erts_psd_required_locks[ERTS_PSD_NIF_TRAP_EXPORT].get_locks + = ERTS_PSD_NIF_TRAP_EXPORT_GET_LOCKS; + erts_psd_required_locks[ERTS_PSD_NIF_TRAP_EXPORT].set_locks + = ERTS_PSD_NIF_TRAP_EXPORT_SET_LOCKS; #endif } @@ -1146,7 +1139,7 @@ reply_sched_wall_time(void *vswtrp) hpp = &hp; } - erts_queue_message(rp, &rp_locks, mp, msg, NIL); + erts_queue_message(rp, &rp_locks, mp, msg); if (swtrp->req_sched == esdp->no) rp_locks &= ~ERTS_PROC_LOCK_MAIN; @@ -1225,7 +1218,7 @@ reply_system_check(void *vscrp) hpp = &hp; msg = STORE_NC(hpp, ohp, scrp->ref); - erts_queue_message(rp, &rp_locks, mp, msg, NIL); + erts_queue_message(rp, &rp_locks, mp, msg); if (scrp->req_sched == esdp->no) rp_locks &= ~ERTS_PROC_LOCK_MAIN; @@ -1314,46 +1307,25 @@ erts_proclist_destroy(ErtsProcList *plp) } void * -erts_psd_set_init(Process *p, ErtsProcLocks plocks, int ix, void *data) +erts_psd_set_init(Process *p, int ix, void *data) { void *old; - ErtsProcLocks xplocks; - int refc = 0; - ErtsPSD *psd = erts_alloc(ERTS_ALC_T_PSD, sizeof(ErtsPSD)); + ErtsPSD *psd, *new_psd; int i; - for (i = 0; i < ERTS_PSD_SIZE; i++) - psd->data[i] = NULL; - ERTS_SMP_LC_ASSERT(plocks); - ERTS_SMP_LC_ASSERT(plocks == erts_proc_lc_my_proc_locks(p)); + new_psd = erts_alloc(ERTS_ALC_T_PSD, sizeof(ErtsPSD)); + for (i = 0; i < ERTS_PSD_SIZE; i++) + new_psd->data[i] = NULL; - xplocks = ERTS_PROC_LOCKS_ALL; - xplocks &= ~plocks; - if (xplocks && erts_smp_proc_trylock(p, xplocks) == EBUSY) { - if (xplocks & ERTS_PROC_LOCK_MAIN) { - erts_proc_inc_refc(p); - erts_smp_proc_unlock(p, plocks); - erts_smp_proc_lock(p, ERTS_PROC_LOCKS_ALL); - refc = 1; - } - else { - if (plocks & ERTS_PROC_LOCKS_ALL_MINOR) - erts_smp_proc_unlock(p, plocks & ERTS_PROC_LOCKS_ALL_MINOR); - erts_smp_proc_lock(p, ERTS_PROC_LOCKS_ALL_MINOR); - } - } - if (!p->psd) - p->psd = psd; - if (xplocks) - erts_smp_proc_unlock(p, xplocks); - if (refc) - erts_proc_dec_refc(p); - ASSERT(p->psd); - if (p->psd != psd) - erts_free(ERTS_ALC_T_PSD, psd); - old = p->psd->data[ix]; - p->psd->data[ix] = data; - ERTS_SMP_LC_ASSERT(plocks == erts_proc_lc_my_proc_locks(p)); + psd = (ErtsPSD *) erts_smp_atomic_cmpxchg_mb(&p->psd, + (erts_aint_t) new_psd, + (erts_aint_t) NULL); + if (psd) + erts_free(ERTS_ALC_T_PSD, new_psd); + else + psd = new_psd; + old = psd->data[ix]; + psd->data[ix] = data; return old; } @@ -2340,7 +2312,7 @@ handle_reap_ports(ErtsAuxWorkData *awdp, erts_aint32_t aux_work, int waiting) ERTS_PORT_SFLG_HALT); erts_smp_atomic32_inc_nob(&erts_halt_progress); if (!(state & (ERTS_PORT_SFLG_EXITING|ERTS_PORT_SFLG_CLOSING))) - erts_deliver_port_exit(prt, prt->common.id, am_killed, 0); + erts_deliver_port_exit(prt, prt->common.id, am_killed, 0, 1); } erts_port_release(prt); @@ -3247,6 +3219,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_CHECK_IO); ASSERT(!erts_port_task_have_outstanding_io_tasks()); + LTTNG2(scheduler_poll, esdp->no, 1); erl_sys_schedule(1); /* Might give us something to do */ ERTS_MSACC_POP_STATE_M(); @@ -3370,6 +3343,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) ASSERT(!erts_port_task_have_outstanding_io_tasks()); ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_CHECK_IO); + LTTNG2(scheduler_poll, esdp->no, 0); erl_sys_schedule(0); @@ -9333,8 +9307,6 @@ Process *schedule(Process *p, int calls) } else { sched_out_proc: - ASSERT(!(p->flags & F_DELAY_GC)); - #ifdef ERTS_SMP ERTS_SMP_CHK_HAVE_ONLY_MAIN_PROC_LOCK(p); esdp = p->scheduler_data; @@ -9344,6 +9316,7 @@ Process *schedule(Process *p, int calls) esdp = erts_scheduler_data; ASSERT(esdp->current_process == p); #endif + reds = actual_reds = calls - esdp->virtual_reds; if (reds < ERTS_PROC_MIN_CONTEXT_SWITCH_REDS_COST) reds = ERTS_PROC_MIN_CONTEXT_SWITCH_REDS_COST; @@ -9356,27 +9329,39 @@ Process *schedule(Process *p, int calls) p->reds += actual_reds; - erts_smp_proc_lock(p, ERTS_PROC_LOCK_STATUS); +#ifdef ERTS_SMP + erts_smp_proc_lock(p, ERTS_PROC_LOCK_TRACE); + if (p->trace_msg_q) { + erts_smp_proc_unlock(p, ERTS_PROC_LOCK_TRACE); + erts_schedule_flush_trace_messages(p->common.id); + } else + erts_smp_proc_unlock(p, ERTS_PROC_LOCK_TRACE); +#endif - state = erts_smp_atomic32_read_acqb(&p->state); + state = erts_smp_atomic32_read_nob(&p->state); if (IS_TRACED(p)) { if (IS_TRACED_FL(p, F_TRACE_CALLS) && !(state & ERTS_PSFLG_FREE)) erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_OUT); - if (state & (ERTS_PSFLG_FREE|ERTS_PSFLG_EXITING)) { + if ((state & (ERTS_PSFLG_FREE|ERTS_PSFLG_EXITING)) == ERTS_PSFLG_EXITING) { if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) - trace_sched(p, ((state & ERTS_PSFLG_FREE) - ? am_out_exited - : am_out_exiting)); + trace_sched(p, ERTS_PROC_LOCK_MAIN, + ((state & ERTS_PSFLG_FREE) + ? am_out_exited + : am_out_exiting)); } else { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED)) - trace_sched(p, am_out); - else if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) - trace_virtual_sched(p, am_out); + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || + ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_out); } } + erts_smp_proc_lock(p, ERTS_PROC_LOCK_STATUS); + + /* have to re-read state after taking lock */ + state = erts_smp_atomic32_read_nob(&p->state); + #ifdef ERTS_SMP if (state & ERTS_PSFLG_PENDING_EXIT) erts_handle_pending_exit(p, (ERTS_PROC_LOCK_MAIN @@ -9590,7 +9575,10 @@ Process *schedule(Process *p, int calls) erts_sys_schedule_interrupt(0); #endif erts_smp_runq_unlock(rq); - ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_CHECK_IO); + + ERTS_MSACC_SET_STATE_CACHED_M(ERTS_MSACC_STATE_CHECK_IO); + LTTNG2(scheduler_poll, esdp->no, 1); + erl_sys_schedule(1); ERTS_MSACC_POP_STATE_M(); @@ -9733,12 +9721,14 @@ Process *schedule(Process *p, int calls) | ERTS_PSFLG_ACTIVE_SYS | ERTS_PSFLG_DIRTY_ACTIVE_SYS)) == ERTS_PSFLG_SUSPENDED)) { - if (state & ERTS_PSFLG_FREE) - erts_proc_dec_refc(p); if (proxy_p) { free_proxy_proc(proxy_p); proxy_p = NULL; } + else if (state & ERTS_PSFLG_FREE) { + /* free and not queued by proxy */ + erts_proc_dec_refc(p); + } goto pick_next_process; } state = new; @@ -9798,10 +9788,7 @@ Process *schedule(Process *p, int calls) if (erts_sched_stat.enabled) { int prio; - UWord old = ERTS_PROC_SCHED_ID(p, - (ERTS_PROC_LOCK_MAIN - | ERTS_PROC_LOCK_STATUS), - (UWord) esdp->no); + UWord old = ERTS_PROC_SCHED_ID(p, (UWord) esdp->no); int migrated = old && old != esdp->no; #ifdef ERTS_DIRTY_SCHEDULERS @@ -9871,39 +9858,48 @@ Process *schedule(Process *p, int calls) p->fcalls = reds; + erts_smp_proc_unlock(p, ERTS_PROC_LOCK_STATUS); + if (IS_TRACED(p)) { if (state & ERTS_PSFLG_EXITING) { if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_EXIT)) - trace_sched(p, am_in_exiting); + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in_exiting); } else { - if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED)) - trace_sched(p, am_in); - else if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) - trace_virtual_sched(p, am_in); + if (ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED) || + ARE_TRACE_FLAGS_ON(p, F_TRACE_SCHED_PROCS)) + trace_sched(p, ERTS_PROC_LOCK_MAIN, am_in); } if (IS_TRACED_FL(p, F_TRACE_CALLS)) { erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_IN); } } - erts_smp_proc_unlock(p, ERTS_PROC_LOCK_STATUS); #ifdef ERTS_SMP - if (is_not_nil(ERTS_TRACER_PROC(p))) - erts_check_my_tracer_proc(p); + /* Clears tracer if it has been removed */ + (void)ERTS_TRACER_PROC_IS_ENABLED(p); #endif if (state & ERTS_PSFLG_RUNNING_SYS) { - reds -= execute_sys_tasks(p, &state, reds); - if (reds <= 0 + /* + * GC is normally never delayed when a process + * is scheduled out, but might be when executing + * hand written beam assembly in + * prim_eval:'receive'. If GC is delayed we are + * not allowed to execute system tasks. + */ + if (!(p->flags & F_DELAY_GC)) { + reds -= execute_sys_tasks(p, &state, reds); + if (reds <= 0 #ifdef ERTS_DIRTY_SCHEDULERS - || ERTS_SCHEDULER_IS_DIRTY(esdp) - || (state & ERTS_PSFLGS_DIRTY_WORK) + || ERTS_SCHEDULER_IS_DIRTY(esdp) + || (state & ERTS_PSFLGS_DIRTY_WORK) #endif - ) { - p->fcalls = reds; - goto sched_out_proc; + ) { + p->fcalls = reds; + goto sched_out_proc; + } } ASSERT(state & ERTS_PSFLG_RUNNING_SYS); @@ -9933,7 +9929,7 @@ Process *schedule(Process *p, int calls) } if (ERTS_IS_GC_DESIRED(p)) { - if (!(state & ERTS_PSFLG_EXITING) && !(p->flags & F_DISABLE_GC)) { + if (!(state & ERTS_PSFLG_EXITING) && !(p->flags & (F_DELAY_GC|F_DISABLE_GC))) { reds -= erts_garbage_collect_nobump(p, 0, p->arg_reg, p->arity); if (reds <= 0) { p->fcalls = reds; @@ -10014,7 +10010,7 @@ notify_sys_task_executed(Process *c_p, ErtsProcSysTask *st, Eterm st_result) ASSERT(hp_start + hsz == hp); #endif - erts_queue_message(rp, &rp_locks, mp, msg, NIL); + erts_queue_message(rp, &rp_locks, mp, msg); if (c_p == rp) rp_locks &= ~ERTS_PROC_LOCK_MAIN; @@ -10182,8 +10178,7 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds) { int garbage_collected = 0; erts_aint32_t state = *statep; - int max_reds = in_reds; - int reds = 0; + int reds = in_reds; int qmask = 0; ERTS_SMP_LC_ASSERT(erts_proc_lc_my_proc_locks(c_p) == ERTS_PROC_LOCK_MAIN); @@ -10211,12 +10206,12 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds) if (c_p->flags & F_DISABLE_GC) { save_gc_task(c_p, st, st_prio); st = NULL; - reds++; + reds--; } else { if (!garbage_collected) { FLAGS(c_p) |= F_NEED_FULLSWEEP; - reds += erts_garbage_collect_nobump(c_p, + reds -= erts_garbage_collect_nobump(c_p, 0, c_p->arg_reg, c_p->arity); @@ -10225,21 +10220,30 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds) st_res = am_true; } break; - case ERTS_PSTT_CPC: + case ERTS_PSTT_CPC: { + int cpc_reds = 0; st_res = erts_check_process_code(c_p, st->arg[0], unsigned_val(st->arg[1]), - &reds); + &cpc_reds); + reds -= cpc_reds; if (is_non_value(st_res)) { /* Needed gc, but gc was disabled */ save_gc_task(c_p, st, st_prio); st = NULL; } break; + } case ERTS_PSTT_COHMQ: - reds += erts_complete_off_heap_message_queue_change(c_p); + reds -= erts_complete_off_heap_message_queue_change(c_p); st_res = am_true; break; +#ifdef ERTS_SMP + case ERTS_PSTT_FTMQ: + reds -= erts_flush_trace_messages(c_p, ERTS_PROC_LOCK_MAIN); + st_res = am_true; + break; +#endif default: ERTS_INTERNAL_ERROR("Invalid process sys task type"); st_res = am_false; @@ -10249,11 +10253,11 @@ execute_sys_tasks(Process *c_p, erts_aint32_t *statep, int in_reds) reds += notify_sys_task_executed(c_p, st, st_res); state = erts_smp_atomic32_read_acqb(&c_p->state); - } while (qmask && reds < max_reds); + } while (qmask && reds > 0); *statep = state; - return reds; + return in_reds - reds; } static int @@ -10285,6 +10289,12 @@ cleanup_sys_tasks(Process *c_p, erts_aint32_t in_state, int in_reds) case ERTS_PSTT_COHMQ: st_res = am_false; break; +#ifdef ERTS_SMP + case ERTS_PSTT_FTMQ: + reds -= erts_flush_trace_messages(c_p, ERTS_PROC_LOCK_MAIN); + st_res = am_true; + break; +#endif default: ERTS_INTERNAL_ERROR("Invalid process sys task type"); st_res = am_false; @@ -10420,8 +10430,8 @@ badarg: BIF_ERROR(BIF_P, BADARG); } -void -erts_schedule_complete_off_heap_message_queue_change(Eterm pid) +static void +erts_schedule_generic_sys_task(Eterm pid, ErtsProcSysTaskType type) { Process *rp = erts_proc_lookup(pid); if (rp) { @@ -10431,7 +10441,7 @@ erts_schedule_complete_off_heap_message_queue_change(Eterm pid) st = erts_alloc(ERTS_ALC_T_PROC_SYS_TSK, ERTS_PROC_SYS_TASK_SIZE(0)); - st->type = ERTS_PSTT_COHMQ; + st->type = type; st->requester = NIL; st->reply_tag = NIL; st->req_id = NIL; @@ -10446,6 +10456,18 @@ erts_schedule_complete_off_heap_message_queue_change(Eterm pid) } } +void +erts_schedule_complete_off_heap_message_queue_change(Eterm pid) +{ + erts_schedule_generic_sys_task(pid, ERTS_PSTT_COHMQ); +} + +void +erts_schedule_flush_trace_messages(Eterm pid) +{ + erts_schedule_generic_sys_task(pid, ERTS_PSTT_FTMQ); +} + static void save_gc_task(Process *c_p, ErtsProcSysTask *st, int prio) { @@ -10465,7 +10487,7 @@ save_gc_task(Process *c_p, ErtsProcSysTask *st, int prio) qs->q[PRIORITY_NORMAL] = NULL; qs->q[PRIORITY_LOW] = NULL; qs->q[prio] = st; - (void) ERTS_PROC_SET_DELAYED_GC_TASK_QS(c_p, ERTS_PROC_LOCK_MAIN, qs); + (void) ERTS_PROC_SET_DELAYED_GC_TASK_QS(c_p, qs); } else { if (!qs->q[prio]) { @@ -10612,7 +10634,7 @@ erts_set_gc_state(Process *c_p, int enable) erts_smp_proc_unlock(c_p, ERTS_PROC_LOCK_STATUS); - (void) ERTS_PROC_SET_DELAYED_GC_TASK_QS(c_p, ERTS_PROC_LOCK_MAIN, NULL); + (void) ERTS_PROC_SET_DELAYED_GC_TASK_QS(c_p, NULL); if (dgc_tsk_qs) proc_sys_task_queues_free(dgc_tsk_qs); @@ -10904,14 +10926,13 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). Eterm res = THE_NON_VALUE; erts_aint32_t state = 0; erts_aint32_t prio = (erts_aint32_t) PRIORITY_NORMAL; + ErtsProcLocks locks = ERTS_PROC_LOCKS_ALL; #ifdef SHCOPY_SPAWN erts_shcopy_t info; INITIALIZE_SHCOPY(info); #endif -#ifdef ERTS_SMP erts_smp_proc_lock(parent, ERTS_PROC_LOCKS_ALL_MINOR); -#endif /* * Check for errors. @@ -11080,7 +11101,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). : STORE_NC(&p->htop, &p->off_heap, parent->group_leader); } - erts_get_default_tracing(&ERTS_TRACE_FLAGS(p), &ERTS_TRACER_PROC(p)); + erts_get_default_proc_tracing(&ERTS_TRACE_FLAGS(p), &ERTS_TRACER(p)); p->msg.first = NULL; p->msg.last = &p->msg.first; @@ -11098,7 +11119,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->mbuf = NULL; p->msg_frag = NULL; p->mbuf_sz = 0; - p->psd = NULL; + erts_smp_atomic_init_nob(&p->psd, (erts_aint_t) NULL); p->dictionary = NULL; p->seq_trace_lastcnt = 0; p->seq_trace_clock = 0; @@ -11116,21 +11137,60 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). p->last_old_htop = NULL; #endif +#ifdef ERTS_SMP + p->trace_msg_q = NULL; + p->scheduler_data = NULL; + p->suspendee = NIL; + p->pending_suspenders = NULL; + p->pending_exit.reason = THE_NON_VALUE; + p->pending_exit.bp = NULL; +#endif + +#if !defined(NO_FPE_SIGNALS) || defined(HIPE) + p->fp_exception = 0; +#endif + if (IS_TRACED(parent)) { if (ERTS_TRACE_FLAGS(parent) & F_TRACE_SOS) { ERTS_TRACE_FLAGS(p) |= (ERTS_TRACE_FLAGS(parent) & TRACEE_FLAGS); - ERTS_TRACER_PROC(p) = ERTS_TRACER_PROC(parent); - } - if (ARE_TRACE_FLAGS_ON(parent, F_TRACE_PROCS)) { - trace_proc_spawn(parent, p->common.id, mod, func, args); + erts_tracer_replace(&p->common, ERTS_TRACER(parent)); } - if (ERTS_TRACE_FLAGS(parent) & F_TRACE_SOS1) { + if (ERTS_TRACE_FLAGS(parent) & F_TRACE_SOS1) { /* Overrides TRACE_CHILDREN */ ERTS_TRACE_FLAGS(p) |= (ERTS_TRACE_FLAGS(parent) & TRACEE_FLAGS); - ERTS_TRACER_PROC(p) = ERTS_TRACER_PROC(parent); + erts_tracer_replace(&p->common, ERTS_TRACER(parent)); ERTS_TRACE_FLAGS(p) &= ~(F_TRACE_SOS1 | F_TRACE_SOS); ERTS_TRACE_FLAGS(parent) &= ~(F_TRACE_SOS1 | F_TRACE_SOS); } + if (so->flags & SPO_LINK && ERTS_TRACE_FLAGS(parent) & (F_TRACE_SOL|F_TRACE_SOL1)) { + ERTS_TRACE_FLAGS(p) |= (ERTS_TRACE_FLAGS(parent)&TRACEE_FLAGS); + erts_tracer_replace(&p->common, ERTS_TRACER(parent)); + if (ERTS_TRACE_FLAGS(parent) & F_TRACE_SOL1) {/*maybe override*/ + ERTS_TRACE_FLAGS(p) &= ~(F_TRACE_SOL1 | F_TRACE_SOL); + ERTS_TRACE_FLAGS(parent) &= ~(F_TRACE_SOL1 | F_TRACE_SOL); + } + } + if (ARE_TRACE_FLAGS_ON(parent, F_TRACE_PROCS)) { + locks &= ~(ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + erts_smp_proc_unlock(p, ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + erts_smp_proc_unlock(parent, ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + trace_proc_spawn(parent, am_spawn, p->common.id, mod, func, args); + if (so->flags & SPO_LINK) + trace_proc(parent, locks, parent, am_link, p->common.id); + } + } + + if (IS_TRACED_FL(p, F_TRACE_PROCS)) { + if ((locks & (ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE)) + == (ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE)) { + /* This happens when parent was not traced, but child is */ + locks &= ~(ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + erts_smp_proc_unlock(p, ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + erts_smp_proc_unlock(parent, ERTS_PROC_LOCK_STATUS|ERTS_PROC_LOCK_TRACE); + } + trace_proc_spawn(p, am_spawned, parent->common.id, mod, func, args); + if (so->flags & SPO_LINK) + trace_proc(p, locks, p, am_getting_linked, parent->common.id); } /* @@ -11141,10 +11201,6 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). #ifdef DEBUG int ret; #endif - if (IS_TRACED_FL(parent, F_TRACE_PROCS)) { - trace_proc(parent, parent, am_link, p->common.id); - } - #ifdef DEBUG ret = erts_add_link(&ERTS_P_LINKS(parent), LINK_PID, p->common.id); ASSERT(ret == 0); @@ -11155,17 +11211,6 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). erts_add_link(&ERTS_P_LINKS(p), LINK_PID, parent->common.id); #endif - if (IS_TRACED(parent)) { - if (ERTS_TRACE_FLAGS(parent) & (F_TRACE_SOL|F_TRACE_SOL1)) { - ERTS_TRACE_FLAGS(p) |= (ERTS_TRACE_FLAGS(parent)&TRACEE_FLAGS); - ERTS_TRACER_PROC(p) = ERTS_TRACER_PROC(parent); /*maybe steal*/ - - if (ERTS_TRACE_FLAGS(parent) & F_TRACE_SOL1) {/*maybe override*/ - ERTS_TRACE_FLAGS(p) &= ~(F_TRACE_SOL1 | F_TRACE_SOL); - ERTS_TRACE_FLAGS(parent) &= ~(F_TRACE_SOL1 | F_TRACE_SOL); - } - } - } } /* @@ -11180,19 +11225,7 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). so->mref = mref; } -#ifdef ERTS_SMP - p->scheduler_data = NULL; - p->suspendee = NIL; - p->pending_suspenders = NULL; - p->pending_exit.reason = THE_NON_VALUE; - p->pending_exit.bp = NULL; -#endif - -#if !defined(NO_FPE_SIGNALS) || defined(HIPE) - p->fp_exception = 0; -#endif - - erts_smp_proc_unlock(p, ERTS_PROC_LOCKS_ALL); + erts_smp_proc_unlock(p, locks); res = p->common.id; @@ -11200,6 +11233,8 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). * Schedule process for execution. */ + erts_smp_proc_unlock(parent, locks & ERTS_PROC_LOCKS_ALL_MINOR); + schedule_process(p, state, 0); VERBOSE(DEBUG_PROCESSES, ("Created a new process: %T\n",p->common.id)); @@ -11213,10 +11248,11 @@ erl_create_process(Process* parent, /* Parent of process (default group leader). DTRACE2(process_spawn, process_name, mfa); } #endif + return res; error: - erts_smp_proc_unlock(parent, ERTS_PROC_LOCKS_ALL_MINOR); + erts_smp_proc_unlock(parent, locks & ERTS_PROC_LOCKS_ALL_MINOR); return res; } @@ -11241,7 +11277,7 @@ void erts_init_empty_process(Process *p) p->rcount = 0; p->common.id = ERTS_INVALID_PID; p->reds = 0; - ERTS_TRACER_PROC(p) = NIL; + ERTS_TRACER(p) = erts_tracer_nil; ERTS_TRACE_FLAGS(p) = F_INITIAL_TRACE_FLAGS; p->group_leader = ERTS_INVALID_PID; p->flags = 0; @@ -11267,7 +11303,7 @@ void erts_init_empty_process(Process *p) p->mbuf = NULL; p->msg_frag = NULL; p->mbuf_sz = 0; - p->psd = NULL; + erts_smp_atomic_init_nob(&p->psd, (erts_aint_t) NULL); ERTS_P_MONITORS(p) = NULL; ERTS_P_LINKS(p) = NULL; /* List of links */ p->nodes_monitors = NULL; @@ -11361,7 +11397,7 @@ erts_debug_verify_clean_empty_process(Process* p) ASSERT(p->live_hf_end == ERTS_INVALID_HFRAG_PTR); ASSERT(p->heap == NULL); ASSERT(p->common.id == ERTS_INVALID_PID); - ASSERT(ERTS_TRACER_PROC(p) == NIL); + ASSERT(ERTS_TRACER_IS_NIL(ERTS_TRACER(p))); ASSERT(ERTS_TRACE_FLAGS(p) == F_INITIAL_TRACE_FLAGS); ASSERT(p->group_leader == ERTS_INVALID_PID); ASSERT(p->next == NULL); @@ -11437,14 +11473,17 @@ static void delete_process(Process* p) { Eterm *heap; + ErtsPSD *psd; VERBOSE(DEBUG_PROCESSES, ("Removing process: %T\n",p->common.id)); VERBOSE(DEBUG_SHCOPY, ("[pid=%T] delete process: %p %p %p %p\n", p->common.id, HEAP_START(p), HEAP_END(p), OLD_HEAP(p), OLD_HEND(p))); /* Cleanup psd */ - if (p->psd) - erts_free(ERTS_ALC_T_PSD, p->psd); + psd = (ErtsPSD *) erts_smp_atomic_read_nob(&p->psd); + + if (psd) + erts_free(ERTS_ALC_T_PSD, psd); /* Clean binaries and funs */ erts_cleanup_offheap(&p->off_heap); @@ -11705,7 +11744,7 @@ send_exit_message(Process *to, ErtsProcLocks *to_locksp, mp = erts_alloc_message_heap(to, to_locksp, term_size, &hp, &ohp); mess = copy_struct(exit_term, term_size, &hp, ohp); #endif - erts_queue_message(to, to_locksp, mp, mess, NIL); + erts_queue_message(to, to_locksp, mp, mess); } else { Eterm temp_token; Uint sz_token; @@ -11723,9 +11762,10 @@ send_exit_message(Process *to, ErtsProcLocks *to_locksp, mess = copy_struct(exit_term, term_size, &hp, ohp); #endif /* the trace token must in this case be updated by the caller */ - seq_trace_output(token, mess, SEQ_TRACE_SEND, to->common.id, NULL); + seq_trace_output(token, mess, SEQ_TRACE_SEND, to->common.id, to); temp_token = copy_struct(token, sz_token, &hp, ohp); - erts_queue_message(to, to_locksp, mp, mess, temp_token); + ERL_MESSAGE_TOKEN(mp) = temp_token; + erts_queue_message(to, to_locksp, mp, mess); } } @@ -11834,6 +11874,9 @@ send_exit_signal(Process *c_p, /* current process if and only if ((state & ERTS_PSFLG_TRAP_EXIT) && (reason != am_kill || (flags & ERTS_XSIG_FLG_IGN_KILL))) { + /* have to release the status lock in order to send the exit message */ + erts_smp_proc_unlock(rp, *rp_locks & ERTS_PROC_LOCKS_XSIG_SEND); + *rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND; if (have_seqtrace(token) && token_update) seq_trace_update_send(token_update); if (is_value(exit_tuple)) @@ -12131,6 +12174,7 @@ static void doit_exit_link(ErtsLink *lnk, void *vpcontext) DistEntry *dep; Process *rp; + switch(lnk->type) { case LINK_PID: if(is_internal_port(item)) { @@ -12178,7 +12222,11 @@ static void doit_exit_link(ErtsLink *lnk, void *vpcontext) if (xres >= 0 && IS_TRACED_FL(rp, F_TRACE_PROCS)) { /* We didn't exit the process and it is traced */ if (IS_TRACED_FL(rp, F_TRACE_PROCS)) { - trace_proc(p, rp, am_getting_unlinked, p->common.id); + if (rp_locks & ERTS_PROC_LOCKS_XSIG_SEND) { + erts_smp_proc_unlock(rp, ERTS_PROC_LOCKS_XSIG_SEND); + rp_locks &= ~ERTS_PROC_LOCKS_XSIG_SEND; + } + trace_proc(NULL, 0, rp, am_getting_unlinked, p->common.id); } } } @@ -12295,8 +12343,6 @@ erts_do_exit_process(Process* p, Eterm reason) if (IS_TRACED_FL(p, F_TRACE_CALLS)) erts_schedule_time_break(p, ERTS_BP_CALL_TIME_SCHEDULE_EXITING); - if (IS_TRACED_FL(p,F_TRACE_PROCS)) - trace_proc(p, p, am_exit, reason); } erts_trace_check_exiting(p->common.id); @@ -12312,6 +12358,10 @@ erts_do_exit_process(Process* p, Eterm reason) erts_smp_proc_unlock(p, ERTS_PROC_LOCKS_ALL_MINOR); + if (IS_TRACED_FL(p,F_TRACE_PROCS)) + trace_proc(p, ERTS_PROC_LOCK_MAIN, p, am_exit, reason); + + /* * p->u.initial of this process can *not* be used anymore; * will be overwritten by misc termination data. @@ -12451,6 +12501,9 @@ erts_continue_exit_process(Process *p) ASSERT(!p->common.u.alive.reg); } + if (IS_TRACED_FL(p, F_TRACE_SCHED_EXIT)) + trace_sched(p, curr_locks, am_out_exited); + erts_smp_proc_lock(p, ERTS_PROC_LOCKS_ALL_MINOR); curr_locks = ERTS_PROC_LOCKS_ALL; @@ -12523,9 +12576,9 @@ erts_continue_exit_process(Process *p) } dep = (p->flags & F_DISTRIBUTION) ? erts_this_dist_entry : NULL; - scb = ERTS_PROC_SET_SAVED_CALLS_BUF(p, ERTS_PROC_LOCKS_ALL, NULL); - pbt = ERTS_PROC_SET_CALL_TIME(p, ERTS_PROC_LOCKS_ALL, NULL); - nif_export = ERTS_PROC_SET_NIF_TRAP_EXPORT(p, ERTS_PROC_LOCKS_ALL, NULL); + scb = ERTS_PROC_SET_SAVED_CALLS_BUF(p, NULL); + pbt = ERTS_PROC_SET_CALL_TIME(p, NULL); + nif_export = ERTS_PROC_SET_NIF_TRAP_EXPORT(p, NULL); erts_smp_proc_unlock(p, ERTS_PROC_LOCKS_ALL); #ifdef BM_COUNTERS @@ -12574,6 +12627,12 @@ erts_continue_exit_process(Process *p) if (nif_export) erts_destroy_nif_export(nif_export); +#ifdef ERTS_SMP + erts_flush_trace_messages(p, 0); +#endif + + ERTS_TRACER_CLEAR(&ERTS_TRACER(p)); + delete_process(p); #ifdef ERTS_SMP |