annotate src/event/modules/ngx_aio_module.c @ 94:8220378432a8

nginx-0.0.1-2003-05-22-19:23:47 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 22 May 2003 15:23:47 +0000
parents 738fe44c70d5
children b48066122884
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1
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2 #include <ngx_config.h>
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3 #include <ngx_core.h>
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4 #include <ngx_event.h>
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5 #include <ngx_aio.h>
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6
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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7 #if (HAVE_KQUEUE)
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8 #include <ngx_kqueue_module.h>
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9 #endif
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11
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12 static int ngx_aio_init(ngx_log_t *log);
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13 static void ngx_aio_done(ngx_log_t *log);
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14 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags);
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15 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags);
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16 static int ngx_aio_del_connection(ngx_connection_t *c);
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17 static int ngx_aio_process_events(ngx_log_t *log);
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20 ngx_os_io_t ngx_os_aio = {
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21 ngx_aio_read,
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22 NULL,
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23 ngx_aio_write,
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24 ngx_aio_write_chain,
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25 NGX_HAVE_ZEROCOPY
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26 };
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27
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29 static ngx_str_t aio_name = ngx_string("aio");
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30
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31 ngx_event_module_t ngx_aio_module_ctx = {
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32 NGX_EVENT_MODULE,
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33 &aio_name,
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34 NULL, /* create configuration */
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35 NULL, /* init configuration */
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36
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37 {
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38 ngx_aio_add_event, /* add an event */
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39 ngx_aio_del_event, /* delete an event */
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40 NULL, /* enable an event */
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41 NULL, /* disable an event */
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42 NULL, /* add an connection */
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43 ngx_aio_del_connection, /* delete an connection */
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44 ngx_aio_process_events, /* process the events */
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45 ngx_aio_init, /* init the events */
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46 ngx_aio_done /* done the events */
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47 }
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48
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49 };
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50
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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51 ngx_module_t ngx_aio_module = {
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52 &ngx_aio_module_ctx, /* module context */
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53 0, /* module index */
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54 NULL, /* module directives */
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55 NGX_EVENT_MODULE_TYPE, /* module type */
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56 NULL /* init module */
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57 };
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58
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61 #if (HAVE_KQUEUE)
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62
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63 static int ngx_aio_init(ngx_log_t *log)
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64 {
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65 if (ngx_kqueue_module_ctx.actions.init(log) == NGX_ERROR) {
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66 return NGX_ERROR;
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67 }
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68
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69 ngx_event_flags = NGX_HAVE_AIO_EVENT|NGX_USE_AIO_EVENT;
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70 ngx_event_actions = ngx_aio_module_ctx.actions;
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71 ngx_io = ngx_os_aio;
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72
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73
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74 return NGX_OK;
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75 }
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78 static void ngx_aio_done(ngx_log_t *log)
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79 {
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80 ngx_kqueue_module_ctx.actions.done(log);
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81 }
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83
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84 /* The event adding and deleteing are needed for the listening sockets */
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85
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86 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags)
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87 {
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88 return ngx_kqueue_module_ctx.actions.add(ev, event, flags);
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89 }
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90
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91
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92 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags)
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93 {
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94 return ngx_kqueue_module_ctx.actions.del(ev, event, flags);
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95 }
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96
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97
94
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98 static int ngx_aio_del_connection(ngx_connection_t *c)
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99 {
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100 int rc;
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101
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102 if (c->read->active || c->write->active) {
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103 rc = aio_cancel(c->fd, NULL);
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104 if (rc == -1) {
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105 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
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106 "aio_cancel() failed");
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107 return NGX_ERROR;
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108 }
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109
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110 ngx_log_debug(c->log, "aio_cancel: %d" _ rc);
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111
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112 #if 0
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113 rc = aio_error(&c->read->aiocb);
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114 if (rc == -1) {
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115 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
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parents: 93
diff changeset
116 "aio_error() failed");
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
117 return NGX_ERROR;
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
118 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
119
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
120 ngx_log_debug(c->log, "aio_error: %d" _ rc);
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
121 #endif
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
122 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
123
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
124 #if 0
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
125 if (c->write->active) {
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
126 rc = aio_cancel(c->fd, &c->write->aiocb);
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
127 if (rc == -1) {
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
128 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
129 "aio_cancel() failed");
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
130 return NGX_ERROR;
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
131 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
132
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
133 ngx_log_debug(c->log, "aio_cancel: %d" _ rc);
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
134
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
135 rc = aio_error(&c->read->aiocb);
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
136 if (rc == -1) {
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
137 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_errno,
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
138 "aio_error() failed");
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
139 return NGX_ERROR;
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
140 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
141
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
142 ngx_log_debug(c->log, "aio_error: %d" _ rc);
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
143 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
144 #endif
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
145
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
146 return NGX_OK;
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
147 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
148
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
149
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
150 static int ngx_aio_process_events(ngx_log_t *log)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
151 {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
152 return ngx_kqueue_module_ctx.actions.process(log);
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
153 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
154
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
155 #endif
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
156
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
157
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
158 #if 0
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
159
6
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
160 /* 1 */
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
161 int ngx_posix_aio_process_events(ngx_log_t *log)
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
162 {
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
163 listen via SIGIO;
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
164 aio_* via SIGxxx;
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
165
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
166 sigsuspend()/sigwaitinfo()/sigtimedwait();
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
167 }
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
168
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
169 /* 2 */
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 int ngx_posix_aio_process_events(ngx_log_t *log)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
172 unmask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
173
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
174 listen via SIGIO;
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
175
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
176 /* BUG: SIGIO can be delivered before aio_*() */
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
177
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
178 aio_suspend()/aiowait()/aio_waitcomplete() with timeout
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
179
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180 mask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
181
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182 if (ngx_socket_errno == NGX_EINTR)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183 look listen
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
184 select()/accept() nb listen sockets
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
185 else
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186 aio
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
187 }
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
188
6
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
189 /* 3 */
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190 int ngx_posix_aio_process_events(ngx_log_t *log)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
191 {
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
192 #if 0
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 unmask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
195 /* BUG: AIO signal can be delivered before select() */
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197 select(listen);
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
198
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199 mask signal
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
200 #endif
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
201
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
202 pselect(listen, mask);
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
203
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
204 if (ngx_socket_errno == NGX_EINTR)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
205 look ready array
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
206 }
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
207
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
208 void aio_sig_handler(int signo, siginfo_t *siginfo, void *context)
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
209 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
210 push siginfo->si_value.sival_ptr
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
211 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
212
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
213 #endif