/*工作进程的具体实现*/ static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data) { /*实际是工作进程的序号*/ ngx_int_t worker = (intptr_t) data; ngx_process = NGX_PROCESS_WORKER; ngx_worker = worker; /*工作进程初始化,主要是根据cycle中的信息初始化一些设置,以及将监听管道的handler加入到event中*/ ngx_worker_process_init(cycle, worker); /*设置工作进程标题*/ ngx_setproctitle("worker process"); for ( ;; ) { if (ngx_exiting) { ngx_event_cancel_timers(); 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"); /*处理网络请求事件,这个函数是事件驱动机制的核心,既会处理普通的网络事件,也会处理定时器事件,它们分别被放在不同的事件队列种*/ 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_exiting = 1; ngx_close_listening_sockets(cycle); ngx_close_idle_connections(cycle); } } 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, void *data) { ngx_int_t worker = (intptr_t) data; ngx_process = NGX_PROCESS_WORKER; ngx_worker = worker; /* worker进程的初始化工作 */ ngx_worker_process_init(cycle, worker); ngx_setproctitle("worker process"); /* worker进程的主循环 */ for ( ;; ) { /* 处理nginx退出 */ if (ngx_exiting) { ngx_event_cancel_timers(); 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"); /* 网络事件处理函数 */ 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_exiting = 1; ngx_close_listening_sockets(cycle); ngx_close_idle_connections(cycle); } } if (ngx_reopen) { ngx_reopen = 0; ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); ngx_reopen_files(cycle, -1); } } }
static ngx_thread_value_t __stdcall ngx_worker_thread(void *data) { ngx_int_t n; ngx_time_t *tp; ngx_cycle_t *cycle; tp = ngx_timeofday(); srand((ngx_pid << 16) ^ (unsigned) tp->sec ^ tp->msec); cycle = (ngx_cycle_t *) ngx_cycle; for (n = 0; cycle->modules[n]; n++) { if (cycle->modules[n]->init_process) { if (cycle->modules[n]->init_process(cycle) == NGX_ERROR) { /* fatal */ exit(2); } } } while (!ngx_quit) { if (ngx_exiting) { if (ngx_event_no_timers_left() == NGX_OK) { break; } } ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "worker cycle"); ngx_process_events_and_timers(cycle); if (ngx_terminate) { return 0; } if (ngx_quit) { ngx_quit = 0; if (!ngx_exiting) { ngx_exiting = 1; ngx_set_shutdown_timer(cycle); ngx_close_listening_sockets(cycle); ngx_close_idle_connections(cycle); } } if (ngx_reopen) { ngx_reopen = 0; ngx_reopen_files(cycle, -1); } } ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); return 0; }
static ngx_thread_value_t __stdcall ngx_worker_thread(void *data) { ngx_int_t n; ngx_cycle_t *cycle; cycle = (ngx_cycle_t *) ngx_cycle; for (n = 0; ngx_modules[n]; n++) { if (ngx_modules[n]->init_process) { if (ngx_modules[n]->init_process(cycle) == NGX_ERROR) { /* fatal */ exit(2); } } } while (!ngx_quit) { if (ngx_exiting) { ngx_event_cancel_timers(); if (ngx_event_timer_rbtree.root == ngx_event_timer_rbtree.sentinel) { break; } } ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "worker cycle"); ngx_process_events_and_timers(cycle); if (ngx_terminate) { return 0; } if (ngx_quit) { ngx_quit = 0; if (!ngx_exiting) { ngx_exiting = 1; ngx_close_listening_sockets(cycle); ngx_close_idle_connections(cycle); } } if (ngx_reopen) { ngx_reopen = 0; ngx_reopen_files(cycle, -1); } } ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); return 0; }