Mercurial > hg > nginx
view src/event/ngx_event_timer.c @ 306:6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 04 Apr 2004 20:32:09 +0000 |
parents | b836469c37c3 |
children | 39b6f2df45c0 |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #if (NGX_THREADS) ngx_mutex_t *ngx_event_timer_mutex; #endif ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree; ngx_rbtree_t ngx_event_timer_sentinel; ngx_int_t ngx_event_timer_init(ngx_log_t *log) { if (ngx_event_timer_rbtree) { #if (NGX_THREADS) ngx_event_timer_mutex->log = log; #endif return NGX_OK; } ngx_event_timer_rbtree = &ngx_event_timer_sentinel; #if (NGX_THREADS) if (!(ngx_event_timer_mutex = ngx_mutex_init(log, 0))) { return NGX_ERROR; } #endif return NGX_OK; } ngx_msec_t ngx_event_find_timer(void) { ngx_rbtree_t *node; if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { return 0; } if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return NGX_TIMER_ERROR; } node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, &ngx_event_timer_sentinel); ngx_mutex_unlock(ngx_event_timer_mutex); return (ngx_msec_t) (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION); #if 0 (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec); #endif } void ngx_event_expire_timers(ngx_msec_t timer) { ngx_event_t *ev; ngx_rbtree_t *node; for ( ;; ) { if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { break; } if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, &ngx_event_timer_sentinel); ngx_mutex_unlock(ngx_event_timer_mutex); if ((ngx_msec_t) node->key <= (ngx_msec_t) (ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION) { ev = (ngx_event_t *) ((char *) node - offsetof(ngx_event_t, rbtree_key)); ngx_del_timer(ev); if (ev->delayed) { ev->delayed = 0; if (ev->ready == 0) { continue; } } else { ev->timedout = 1; } if (ngx_threaded) { if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { return; } ngx_post_event(ev); ngx_mutex_unlock(ngx_posted_events_mutex); continue; } ev->event_handler(ev); continue; } break; } }