Mercurial > hg > nginx-vendor-current
view src/event/ngx_event_timer.h @ 106:45f7329b4bd0 NGINX_0_3_0
nginx 0.3.0
*) Change: the 10-days live time limit of worker process was
eliminated. The limit was introduced because of millisecond timers
overflow.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Fri, 07 Oct 2005 00:00:00 +0400 |
parents | 72eb30262aac |
children | cf3d6edb3ad6 |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_EVENT_TIMER_H_INCLUDED_ #define _NGX_EVENT_TIMER_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #define NGX_TIMER_INFINITE (ngx_msec_t) -1 #define NGX_TIMER_ERROR (ngx_msec_t) -2 #define NGX_TIMER_LAZY_DELAY 300 ngx_int_t ngx_event_timer_init(ngx_log_t *log); ngx_msec_t ngx_event_find_timer(void); void ngx_event_expire_timers(void); #if (NGX_THREADS) extern ngx_mutex_t *ngx_event_timer_mutex; #endif extern ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree; extern ngx_rbtree_t ngx_event_timer_sentinel; static ngx_inline void ngx_event_del_timer(ngx_event_t *ev) { ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer del: %d: %M", ngx_event_ident(ev->data), ev->rbtree_key); if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } ngx_rbtree_delete((ngx_rbtree_t **) &ngx_event_timer_rbtree, &ngx_event_timer_sentinel, (ngx_rbtree_t *) &ev->rbtree_key); ngx_mutex_unlock(ngx_event_timer_mutex); #if (NGX_DEBUG) ev->rbtree_left = NULL; ev->rbtree_right = NULL; ev->rbtree_parent = NULL; #endif ev->timer_set = 0; } static ngx_inline void ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer) { ngx_rbtree_key_t key; ngx_rbtree_key_int_t diff; key = ngx_current_time + timer; if (ev->timer_set) { /* * Use the previous timer value if a difference between them is less * then NGX_TIMER_LAZY_DELAY milliseconds. It allows to minimize * the rbtree operations for the fast connections. */ diff = (ngx_rbtree_key_int_t) (key - ev->rbtree_key); if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) { ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer: %d, old: %M, new: %M", ngx_event_ident(ev->data), ev->rbtree_key, key); return; } ngx_del_timer(ev); } ev->rbtree_key = key; ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer add: %d: %M:%M", ngx_event_ident(ev->data), timer, ev->rbtree_key); if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } ngx_rbtree_insert((ngx_rbtree_t **) &ngx_event_timer_rbtree, &ngx_event_timer_sentinel, (ngx_rbtree_t *) &ev->rbtree_key); ngx_mutex_unlock(ngx_event_timer_mutex); ev->timer_set = 1; } #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */