Mercurial > hg > nginx
annotate src/event/ngx_event_timer.h @ 8591:ffa14521990e quic
QUIC: sorted ngx_quic_send_frames() declarations.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Wed, 21 Oct 2020 12:03:21 +0100 |
parents | 3069dd358ba2 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_EVENT_TIMER_H_INCLUDED_ |
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9 #define _NGX_EVENT_TIMER_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 #include <ngx_event.h> |
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501 | 17 #define NGX_TIMER_INFINITE (ngx_msec_t) -1 |
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18 |
493 | 19 #define NGX_TIMER_LAZY_DELAY 300 |
20 | |
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22 ngx_int_t ngx_event_timer_init(ngx_log_t *log); |
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23 ngx_msec_t ngx_event_find_timer(void); |
557 | 24 void ngx_event_expire_timers(void); |
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25 ngx_int_t ngx_event_no_timers_left(void); |
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28 extern ngx_rbtree_t ngx_event_timer_rbtree; |
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493 | 31 static ngx_inline void |
32 ngx_event_del_timer(ngx_event_t *ev) | |
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33 { |
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34 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
557 | 35 "event timer del: %d: %M", |
559 | 36 ngx_event_ident(ev->data), ev->timer.key); |
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37 |
559 | 38 ngx_rbtree_delete(&ngx_event_timer_rbtree, &ev->timer); |
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40 #if (NGX_DEBUG) |
559 | 41 ev->timer.left = NULL; |
42 ev->timer.right = NULL; | |
43 ev->timer.parent = NULL; | |
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44 #endif |
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46 ev->timer_set = 0; |
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47 } |
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493 | 50 static ngx_inline void |
51 ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer) | |
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52 { |
561 | 53 ngx_msec_t key; |
54 ngx_msec_int_t diff; | |
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563 | 56 key = ngx_current_msec + timer; |
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58 if (ev->timer_set) { |
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60 /* |
1807 | 61 * Use a previous timer value if difference between it and a new |
62 * value is less than NGX_TIMER_LAZY_DELAY milliseconds: this allows | |
63 * to minimize the rbtree operations for fast connections. | |
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64 */ |
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65 |
561 | 66 diff = (ngx_msec_int_t) (key - ev->timer.key); |
557 | 67 |
68 if (ngx_abs(diff) < NGX_TIMER_LAZY_DELAY) { | |
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69 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
557 | 70 "event timer: %d, old: %M, new: %M", |
559 | 71 ngx_event_ident(ev->data), ev->timer.key, key); |
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72 return; |
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73 } |
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74 |
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75 ngx_del_timer(ev); |
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76 } |
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559 | 78 ev->timer.key = key; |
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79 |
557 | 80 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
81 "event timer add: %d: %M:%M", | |
559 | 82 ngx_event_ident(ev->data), timer, ev->timer.key); |
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83 |
559 | 84 ngx_rbtree_insert(&ngx_event_timer_rbtree, &ev->timer); |
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85 |
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86 ev->timer_set = 1; |
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87 } |
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88 |
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89 |
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90 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */ |