Mercurial > hg > nginx
annotate src/event/ngx_event_timer.h @ 7349:f6047a579ca1
gRPC: improved keepalive handling.
The code is now able to parse additional control frames after
the response is received, and can send control frames as well.
This fixes keepalive problems as observed with grpc-c, which can
send window update and ping frames after the response, see
http://mailman.nginx.org/pipermail/nginx/2018-August/056620.html.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 03 Sep 2018 19:34:01 +0300 |
parents | 3069dd358ba2 |
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1 |
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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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Events: removed broken thread support from event timers.
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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_ */ |