void ngx_single_process_cycle(ngx_cycle_t *cycle, ngx_int_t block) { // ngx_int_t i; ngx_tid_t tid; #if 0 for (i = 0; ngx_modules[i]; i++) { if (ngx_modules[i]->init_process) { if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) { /* fatal */ exit(2); } } } #endif ngx_process_init(cycle); // ngx_console_init(cycle); if (ngx_create_signal_events(cycle) != NGX_OK) { exit(2); } if (ngx_create_thread(&tid, ngx_worker_thread, NULL, cycle->log) != 0) { /* fatal */ exit(2); } if(block) { /* STUB */ WaitForSingleObject(ngx_stop_event, INFINITE); } }
static ngx_int_t ngx_iocp_init(ngx_cycle_t *cycle, ngx_msec_t timer) { ngx_iocp_conf_t *cf; cf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module); if (iocp == NULL) { iocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, cf->threads); } if (iocp == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "CreateIoCompletionPort() failed"); return NGX_ERROR; } ngx_io = ngx_iocp_io; ngx_event_actions = ngx_iocp_module_ctx.actions; ngx_event_flags = NGX_USE_AIO_EVENT|NGX_USE_IOCP_EVENT; if (timer == 0) { return NGX_OK; } /* * The waitable timer could not be used, because * GetQueuedCompletionStatus() does not set a thread to alertable state */ if (timer_thread == NULL) { msec = timer; if (ngx_create_thread(&timer_thread, ngx_iocp_timer, &msec, cycle->log) != 0) { return NGX_ERROR; } } ngx_event_flags |= NGX_USE_TIMER_EVENT; return NGX_OK; }
void ngx_single_process_cycle(ngx_cycle_t *cycle) { ngx_tid_t tid; ngx_console_init(cycle); if (ngx_create_signal_events(cycle) != NGX_OK) { exit(2); } if (ngx_create_thread(&tid, ngx_worker_thread, NULL, cycle->log) != 0) { /* fatal */ exit(2); } /* STUB */ WaitForSingleObject(ngx_stop_event, INFINITE); }
static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data) { ngx_int_t worker = (intptr_t) data; ngx_uint_t i; ngx_connection_t *c; ngx_process = NGX_PROCESS_WORKER; ngx_worker_process_init(cycle, worker); ngx_setproctitle("worker process"); #if (NGX_THREADS) { ngx_int_t n; ngx_err_t err; ngx_core_conf_t *ccf; ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); if (ngx_threads_n) { if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle) == NGX_ERROR) { /* fatal */ exit(2); } err = ngx_thread_key_create(&ngx_core_tls_key); if (err != 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, err, ngx_thread_key_create_n " failed"); /* fatal */ exit(2); } for (n = 0; n < ngx_threads_n; n++) { ngx_threads[n].cv = ngx_cond_init(cycle->log); if (ngx_threads[n].cv == NULL) { /* fatal */ exit(2); } if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid, ngx_worker_thread_cycle, (void *) &ngx_threads[n], cycle->log) != 0) { /* fatal */ exit(2); } } } } #endif for ( ;; ) { if (ngx_exiting) { c = cycle->connections; for (i = 0; i < cycle->connection_n; i++) { /* THREAD: lock */ if (c[i].fd != -1 && c[i].idle) { c[i].close = 1; c[i].read->handler(c[i].read); } } if (ngx_event_timer_rbtree.root == ngx_event_timer_rbtree.sentinel) { ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); ngx_worker_process_exit(cycle); } } ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle"); ngx_process_events_and_timers(cycle); if (ngx_terminate) { ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); ngx_worker_process_exit(cycle); } if (ngx_quit) { ngx_quit = 0; ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "gracefully shutting down"); ngx_setproctitle("worker process is shutting down"); if (!ngx_exiting) { ngx_close_listening_sockets(cycle); ngx_exiting = 1; } } if (ngx_reopen) { ngx_reopen = 0; ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); ngx_reopen_files(cycle, -1); } } }
/*[p] 工作进程要执行的具体工作*/ static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data) { ngx_uint_t i; ngx_connection_t *c; ngx_process = NGX_PROCESS_WORKER; //初始化worker进程 ngx_worker_process_init(cycle, 1); //[p]设置工作进程标题 ngx_setproctitle("worker process"); #if (NGX_THREADS) { ngx_int_t n; ngx_err_t err; ngx_core_conf_t *ccf; ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); if (ngx_threads_n) { if (ngx_init_threads(ngx_threads_n, ccf->thread_stack_size, cycle) == NGX_ERROR) { /* fatal */ exit(2); } err = ngx_thread_key_create(&ngx_core_tls_key); if (err != 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, err, ngx_thread_key_create_n " failed"); /* fatal */ exit(2); } for (n = 0; n < ngx_threads_n; n++) { ngx_threads[n].cv = ngx_cond_init(cycle->log); if (ngx_threads[n].cv == NULL) { /* fatal */ exit(2); } if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid, ngx_worker_thread_cycle, (void *) &ngx_threads[n], cycle->log) != 0) { /* fatal */ exit(2); } } } } #endif for ( ;; ) { //ngx_exiting是当收到master的quit命令(SIGQUIT信号)后,设置为1,然后等待其他资源退出 if (ngx_exiting) { c = cycle->connections; // worker进程退出前,先处理完每个connection上已经发生的事件 for (i = 0; i < cycle->connection_n; i++) { /* THREAD: lock */ if (c[i].fd != -1 && c[i].idle) { c[i].close = 1; c[i].read->handler(c[i].read); } } //定时器超时则退出worker; 处理完所有事件,worker进程退出 if (ngx_event_timer_rbtree.root == ngx_event_timer_rbtree.sentinel) { ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); ngx_worker_process_exit(cycle); } } ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle"); // 这里是worker进程处理事件的核心。 ngx_process_events_and_timers(cycle); //收到shutdown命令(SIGINT信号)则worker直接退出 if (ngx_terminate) { ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); ngx_worker_process_exit(cycle); } //收到quit命令(SIGQUIT信号) if (ngx_quit) { ngx_quit = 0; ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "gracefully shutting down"); ngx_setproctitle("worker process is shutting down"); if (!ngx_exiting) { //关闭socket,然后设置退出标志 ngx_close_listening_sockets(cycle); ngx_exiting = 1; } } //收到master重新打开log的命令,worker进程收到了SIGUSR1信号 if (ngx_reopen) { ngx_reopen = 0; ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); ngx_reopen_files(cycle, -1); } } }
static void ngx_worker_process_cycle(ngx_cycle_t *cycle, char *mevn) { char wtevn[NGX_PROCESS_SYNC_NAME]; char wqevn[NGX_PROCESS_SYNC_NAME]; char wroevn[NGX_PROCESS_SYNC_NAME]; HANDLE mev, events[3]; u_long nev, ev; ngx_err_t err; ngx_tid_t wtid, cmtid, cltid; ngx_log_t *log; log = cycle->log; ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "worker started"); ngx_sprintf((u_char *) wtevn, "ngx_worker_term_%ul%Z", ngx_pid); events[0] = CreateEvent(NULL, 1, 0, wtevn); if (events[0] == NULL) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "CreateEvent(\"%s\") failed", wtevn); goto failed; } ngx_sprintf((u_char *) wqevn, "ngx_worker_quit_%ul%Z", ngx_pid); events[1] = CreateEvent(NULL, 1, 0, wqevn); if (events[1] == NULL) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "CreateEvent(\"%s\") failed", wqevn); goto failed; } ngx_sprintf((u_char *) wroevn, "ngx_worker_reopen_%ul%Z", ngx_pid); events[2] = CreateEvent(NULL, 1, 0, wroevn); if (events[2] == NULL) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "CreateEvent(\"%s\") failed", wroevn); goto failed; } mev = OpenEvent(EVENT_MODIFY_STATE, 0, mevn); if (mev == NULL) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "OpenEvent(\"%s\") failed", mevn); goto failed; } if (SetEvent(mev) == 0) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "SetEvent(\"%s\") failed", mevn); goto failed; } ngx_sprintf((u_char *) ngx_cache_manager_mutex_name, "ngx_cache_manager_mutex_%s%Z", ngx_unique); ngx_cache_manager_mutex = OpenMutex(SYNCHRONIZE, 0, ngx_cache_manager_mutex_name); if (ngx_cache_manager_mutex == NULL) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "OpenMutex(\"%s\") failed", ngx_cache_manager_mutex_name); goto failed; } ngx_cache_manager_event = CreateEvent(NULL, 1, 0, NULL); if (ngx_cache_manager_event == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "CreateEvent(\"ngx_cache_manager_event\") failed"); goto failed; } if (ngx_create_thread(&wtid, ngx_worker_thread, NULL, log) != 0) { goto failed; } if (ngx_create_thread(&cmtid, ngx_cache_manager_thread, NULL, log) != 0) { goto failed; } if (ngx_create_thread(&cltid, ngx_cache_loader_thread, NULL, log) != 0) { goto failed; } for ( ;; ) { ev = WaitForMultipleObjects(3, events, 0, INFINITE); err = ngx_errno; ngx_time_update(); ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "worker WaitForMultipleObjects: %ul", ev); if (ev == WAIT_OBJECT_0) { ngx_terminate = 1; ngx_log_error(NGX_LOG_NOTICE, log, 0, "exiting"); if (ResetEvent(events[0]) == 0) { ngx_log_error(NGX_LOG_ALERT, log, 0, "ResetEvent(\"%s\") failed", wtevn); } break; } if (ev == WAIT_OBJECT_0 + 1) { ngx_quit = 1; ngx_log_error(NGX_LOG_NOTICE, log, 0, "gracefully shutting down"); break; } if (ev == WAIT_OBJECT_0 + 2) { ngx_reopen = 1; ngx_log_error(NGX_LOG_NOTICE, log, 0, "reopening logs"); if (ResetEvent(events[2]) == 0) { ngx_log_error(NGX_LOG_ALERT, log, 0, "ResetEvent(\"%s\") failed", wroevn); } continue; } if (ev == WAIT_FAILED) { ngx_log_error(NGX_LOG_ALERT, log, err, "WaitForMultipleObjects() failed"); goto failed; } } /* wait threads */ if (SetEvent(ngx_cache_manager_event) == 0) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "SetEvent(\"ngx_cache_manager_event\") failed"); } events[1] = wtid; events[2] = cmtid; nev = 3; for ( ;; ) { ev = WaitForMultipleObjects(nev, events, 0, INFINITE); err = ngx_errno; ngx_time_update(); ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "worker exit WaitForMultipleObjects: %ul", ev); if (ev == WAIT_OBJECT_0) { break; } if (ev == WAIT_OBJECT_0 + 1) { if (nev == 2) { break; } events[1] = events[2]; nev = 2; continue; } if (ev == WAIT_OBJECT_0 + 2) { nev = 2; continue; } if (ev == WAIT_FAILED) { ngx_log_error(NGX_LOG_ALERT, log, err, "WaitForMultipleObjects() failed"); break; } } ngx_close_handle(ngx_cache_manager_event); ngx_close_handle(events[0]); ngx_close_handle(events[1]); ngx_close_handle(events[2]); ngx_close_handle(mev); ngx_worker_process_exit(cycle); failed: exit(2); }