blob: be81b157f41662cc6f4a88ddd8f5a0a687e11d23 [file] [log] [blame]
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#define NGX_TIMER_INFINITE (ngx_msec_t) -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(void);
ngx_int_t ngx_event_no_timers_left(void);
extern ngx_rbtree_t ngx_event_timer_rbtree;
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->timer.key);
ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer);
ev->timer.left = NULL;
ev->timer.right = NULL;
ev->timer.parent = NULL;
ev->timer_set = 0;
static ngx_inline void
ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer)
ngx_msec_t key;
ngx_msec_int_t diff;
key = ngx_current_msec + timer;
if (ev->timer_set) {
* Use a previous timer value if difference between it and a new
* value is less than NGX_TIMER_LAZY_DELAY milliseconds: this allows
* to minimize the rbtree operations for fast connections.
diff = (ngx_msec_int_t) (key - ev->timer.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->timer.key, key);
ev->timer.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->timer.key);
ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer);
ev->timer_set = 1;