Mercurial > hg > nginx-quic
view src/event/ngx_event_timer.h @ 8384:c61fcdc1b8e3 quic
UDP: extended datagram context.
Sometimes it is required to process datagram properties at higher level (i.e.
QUIC is interested in source address which may change and IP options). The
patch adds ngx_udp_dgram_t structure used to pass packet-related information
in c->udp.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Fri, 02 Apr 2021 18:58:19 +0300 |
parents | 3069dd358ba2 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #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_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); 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); #if (NGX_DEBUG) ev->timer.left = NULL; ev->timer.right = NULL; ev->timer.parent = NULL; #endif 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); return; } ngx_del_timer(ev); } 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; } #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */