annotate src/event/modules/ngx_aio_module.c @ 6059:c81d79a7befd

SPDY: always push pending data. This helps to avoid suboptimal behavior when a client waits for a control frame or more data to increase window size, but the frames have been delayed in the socket buffer. The delays can be caused by bad interaction between Nagle's algorithm on nginx side and delayed ACK on the client side or by TCP_CORK/TCP_NOPUSH if SPDY was working without SSL and sendfile() was used. The pushing code is now very similar to ngx_http_set_keepalive().
author Valentin Bartenev <vbart@nginx.com>
date Mon, 23 Mar 2015 21:04:13 +0300
parents 4652f8f26b12
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents: 441
diff changeset
3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
parents: 3044
diff changeset
4 * Copyright (C) Nginx, Inc.
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
6
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
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7
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
8 #include <ngx_config.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
9 #include <ngx_core.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
10 #include <ngx_event.h>
3044
a1d54c705f38 *) move small declarations in appropriate places and delete the surplus
Igor Sysoev <igor@sysoev.ru>
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11
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
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12
3044
a1d54c705f38 *) move small declarations in appropriate places and delete the surplus
Igor Sysoev <igor@sysoev.ru>
parents: 3043
diff changeset
13 extern ngx_event_module_t ngx_kqueue_module_ctx;
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
14
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
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15
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
16 static ngx_int_t ngx_aio_init(ngx_cycle_t *cycle, ngx_msec_t timer);
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ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
Igor Sysoev <igor@sysoev.ru>
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17 static void ngx_aio_done(ngx_cycle_t *cycle);
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Igor Sysoev <igor@sysoev.ru>
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18 static ngx_int_t ngx_aio_add_event(ngx_event_t *ev, ngx_int_t event,
f69d1aab6a0f make 64-bit ngx_int_t on 64-bit platforms
Igor Sysoev <igor@sysoev.ru>
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19 ngx_uint_t flags);
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20 static ngx_int_t ngx_aio_del_event(ngx_event_t *ev, ngx_int_t event,
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21 ngx_uint_t flags);
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22 static ngx_int_t ngx_aio_del_connection(ngx_connection_t *c, ngx_uint_t flags);
563
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Igor Sysoev <igor@sysoev.ru>
parents: 541
diff changeset
23 static ngx_int_t ngx_aio_process_events(ngx_cycle_t *cycle, ngx_msec_t timer,
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 541
diff changeset
24 ngx_uint_t flags);
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25
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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26
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents: 91
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27 ngx_os_io_t ngx_os_aio = {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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28 ngx_aio_read,
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
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29 ngx_aio_read_chain,
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0b592a68aade ngx_udp_recv()
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30 NULL,
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parents: 91
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31 ngx_aio_write,
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32 ngx_aio_write_chain,
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2ff194b74f1e nginx-0.1.9-RELEASE import
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parents: 461
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33 0
93
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parents: 91
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34 };
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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35
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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36
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents: 91
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37 static ngx_str_t aio_name = ngx_string("aio");
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38
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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39 ngx_event_module_t ngx_aio_module_ctx = {
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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40 &aio_name,
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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41 NULL, /* create configuration */
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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42 NULL, /* init configuration */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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43
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
44 {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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45 ngx_aio_add_event, /* add an event */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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46 ngx_aio_del_event, /* delete an event */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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47 NULL, /* enable an event */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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48 NULL, /* disable an event */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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49 NULL, /* add an connection */
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
50 ngx_aio_del_connection, /* delete an connection */
6018
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
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51 NULL, /* trigger a notify */
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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52 ngx_aio_process_events, /* process the events */
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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53 ngx_aio_init, /* init the events */
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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54 ngx_aio_done /* done the events */
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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55 }
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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56
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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57 };
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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58
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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59 ngx_module_t ngx_aio_module = {
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
60 NGX_MODULE_V1,
93
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parents: 91
diff changeset
61 &ngx_aio_module_ctx, /* module context */
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Igor Sysoev <igor@sysoev.ru>
parents: 91
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62 NULL, /* module directives */
96
a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 95
diff changeset
63 NGX_EVENT_MODULE, /* module type */
541
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parents: 509
diff changeset
64 NULL, /* init master */
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ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 96
diff changeset
65 NULL, /* init module */
541
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diff changeset
66 NULL, /* init process */
b09ee85d0ac8 nginx-0.1.45-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
67 NULL, /* init thread */
b09ee85d0ac8 nginx-0.1.45-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
68 NULL, /* exit thread */
b09ee85d0ac8 nginx-0.1.45-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
69 NULL, /* exit process */
b09ee85d0ac8 nginx-0.1.45-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
70 NULL, /* exit master */
b09ee85d0ac8 nginx-0.1.45-RELEASE import
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diff changeset
71 NGX_MODULE_V1_PADDING
93
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Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
72 };
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
73
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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74
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
75 #if (NGX_HAVE_KQUEUE)
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
76
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
77 static ngx_int_t
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 541
diff changeset
78 ngx_aio_init(ngx_cycle_t *cycle, ngx_msec_t timer)
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
79 {
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 541
diff changeset
80 if (ngx_kqueue_module_ctx.actions.init(cycle, timer) == NGX_ERROR) {
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents: 91
diff changeset
81 return NGX_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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parents: 91
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82 }
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
83
114
ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 96
diff changeset
84 ngx_io = ngx_os_aio;
ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 96
diff changeset
85
144
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 114
diff changeset
86 ngx_event_flags = NGX_USE_AIO_EVENT;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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87 ngx_event_actions = ngx_aio_module_ctx.actions;
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
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88
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
89
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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90 return NGX_OK;
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
91 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
92
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
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93
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
94 static void
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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95 ngx_aio_done(ngx_cycle_t *cycle)
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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96 {
114
ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
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parents: 96
diff changeset
97 ngx_kqueue_module_ctx.actions.done(cycle);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
98 }
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
99
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
100
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
101 /* the event adding and deleting are needed for the listening sockets */
93
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parents: 91
diff changeset
102
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
103 static ngx_int_t
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104 ngx_aio_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
105 {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
106 return ngx_kqueue_module_ctx.actions.add(ev, event, flags);
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
107 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
108
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
109
499
64d9afb209da nginx-0.1.24-RELEASE import
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diff changeset
110 static ngx_int_t
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diff changeset
111 ngx_aio_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags)
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
112 {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
113 return ngx_kqueue_module_ctx.actions.del(ev, event, flags);
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parents: 91
diff changeset
114 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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115
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
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116
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
117 static ngx_int_t
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118 ngx_aio_del_connection(ngx_connection_t *c, ngx_uint_t flags)
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119 {
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120 int rc;
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121
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b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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122 if (c->read->active == 0 && c->write->active == 0) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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123 return NGX_OK;
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124 }
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125
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126 if (flags & NGX_CLOSE_EVENT) {
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127 return NGX_OK;
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128 }
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129
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130 rc = aio_cancel(c->fd, NULL);
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131
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132 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_cancel: %d", rc);
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133
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134 if (rc == AIO_CANCELED) {
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135 c->read->active = 0;
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136 c->write->active = 0;
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137 return NGX_OK;
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138 }
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139
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140 if (rc == AIO_ALLDONE) {
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141 c->read->active = 0;
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142 c->write->active = 0;
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143 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
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144 "aio_cancel() returned AIO_ALLDONE");
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145 return NGX_OK;
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146 }
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147
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148 if (rc == -1) {
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149 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
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150 "aio_cancel() failed");
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151 return NGX_ERROR;
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152 }
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153
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154 if (rc == AIO_NOTCANCELED) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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155 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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156 "aio_cancel() returned AIO_NOTCANCELED");
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157
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158 return NGX_ERROR;
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159 }
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160
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161 return NGX_OK;
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162 }
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163
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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164
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64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
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165 static ngx_int_t
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166 ngx_aio_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, ngx_uint_t flags)
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167 {
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9c2f3ed7a247 nginx-0.3.3-RELEASE import
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168 return ngx_kqueue_module_ctx.actions.process_events(cycle, timer, flags);
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169 }
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170
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171 #endif /* NGX_HAVE_KQUEUE */