Mercurial > hg > nginx-quic
view src/event/ngx_event_timer.h @ 342:0ee0642af5f1
nginx-0.0.3-2004-05-26-23:33:53 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 26 May 2004 19:33:53 +0000 |
parents | a0beefedaf94 |
children | 446782c909b3 |
line wrap: on
line source
#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 -1 #define NGX_TIMER_ERROR -2 /* * 32 bit timer key value resolution * * 1 msec - 24 days * 10 msec - 8 months * 50 msec - 3 years 5 months * 100 msec - 6 years 10 months */ #define NGX_TIMER_RESOLUTION 1 ngx_int_t ngx_event_timer_init(ngx_log_t *log); ngx_msec_t ngx_event_find_timer(void); void ngx_event_expire_timers(ngx_msec_t timer); #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; ngx_inline static void ngx_event_del_timer(ngx_event_t *ev) { ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer del: %d: %d", ngx_event_ident(ev->data), ev->rbtree_key); #if (NGX_THREADS) if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } #endif ngx_rbtree_delete((ngx_rbtree_t **) &ngx_event_timer_rbtree, &ngx_event_timer_sentinel, (ngx_rbtree_t *) &ev->rbtree_key); #if (NGX_THREADS) ngx_mutex_unlock(ngx_event_timer_mutex); #endif #if (NGX_DEBUG) ev->rbtree_left = NULL; ev->rbtree_right = NULL; ev->rbtree_parent = NULL; #endif ev->timer_set = 0; } ngx_inline static void ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer) { ngx_int_t key; key = (ngx_int_t) (ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION + timer) / NGX_TIMER_RESOLUTION; #if 0 (ngx_elapsed_msec + timer) / NGX_TIMER_RESOLUTION; #endif if (ev->timer_set) { /* * Use the previous timer value if a difference between them is less * then 100 milliseconds. It allows to minimize the rbtree operations * for the fast connections. */ if (key - ev->rbtree_key < 100 / NGX_TIMER_RESOLUTION) { ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer: %d, old: %d, new: %d", ngx_event_ident(ev->data), ev->rbtree_key, key); return; } ngx_del_timer(ev); } ev->rbtree_key = key; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer add: %d: %d", ngx_event_ident(ev->data), ev->rbtree_key); #if (NGX_THREADS) if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } #endif ngx_rbtree_insert((ngx_rbtree_t **) &ngx_event_timer_rbtree, &ngx_event_timer_sentinel, (ngx_rbtree_t *) &ev->rbtree_key); #if (NGX_THREADS) ngx_mutex_unlock(ngx_event_timer_mutex); #endif ev->timer_set = 1; } #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */