Nginx??????

Nginx??????Web???????????????????????????????????????Nginx???????????????

??????

???????Nginx???????????????????

???-p???????????ngx_prefix????????

???-c?????????????ngx_conf_file?

???-g???????????ngx_conf_params?

???-s?????????????ngx_signal????NGX_PROCESS_SIGNALLER?

?????????????ngx_time_init()?????????????????????ngx_cached_err_log_time?ngx_cached_http_time?????ngx_time_update?????????

????????????????ngx_regex_init()?????????????ngx_log_init()????????????????????SSL???ngx_ssl_init()????????HTTPS???

??????ngx_create_pool()??????1024B?????????ngx_save_argv()????????ngx_argv?????????

???????

??????????????????????????????????

?????????ngx_spawn_process()?????????????????????socketpair()??UNIX?????????????????ioctl()?fcntl()????I/O???

?????????????????????proc(cycle, data)???????????ngx_worker_process_cycle()?

?????????????????????????CPU?????????????????????????????

???????ngx_add_channel_event()???????????????????????ngx_channel_handler()?????recvmsg()?????????????

??????

????????????????????????ngx_process_events_and_timers()????

???????ngx_process_events()?? epoll??????????? accept_mutex ??

????????ngx_event_process_posted()?????????????????????

??????????ngx_terminate?ngx_quit?????????????????

acceptd????

ngx_event_process_posted()???????????????

voidngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted){    ngx_queue_t  *q;    ngx_event_t  *ev;    while (!ngx_queue_empty(posted)) {        q = ngx_queue_head(posted);        ev = ngx_queue_data(q, ngx_event_t, queue);        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,                      "posted event %p", ev);        ngx_delete_posted_event(ev);        ev->handler(ev);    }}

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