annotate src/event/modules/ngx_aio_module.c @ 441:da8c5707af39

nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Sep 2004 08:34:51 +0000
parents 5ce6561246a5
children 42d11f017717
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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
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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
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2 /*
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
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3 * Copyright (C) 2002-2004 Igor Sysoev
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
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
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5
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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6
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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7 #include <ngx_config.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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parents: 6
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8 #include <ngx_core.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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9 #include <ngx_event.h>
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10 #include <ngx_aio.h>
63
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11
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
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12 #if (HAVE_KQUEUE)
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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13 #include <ngx_kqueue_module.h>
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14 #endif
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15
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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16
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ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
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17 static int ngx_aio_init(ngx_cycle_t *cycle);
ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
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18 static void ngx_aio_done(ngx_cycle_t *cycle);
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19 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags);
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20 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags);
261
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21 static int ngx_aio_del_connection(ngx_connection_t *c, u_int flags);
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22 static int ngx_aio_process_events(ngx_cycle_t *cycle);
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23
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24
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25 ngx_os_io_t ngx_os_aio = {
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26 ngx_aio_read,
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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27 ngx_aio_read_chain,
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28 ngx_aio_write,
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29 ngx_aio_write_chain,
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30 NGX_HAVE_ZEROCOPY
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31 };
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32
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33
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34 static ngx_str_t aio_name = ngx_string("aio");
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35
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36 ngx_event_module_t ngx_aio_module_ctx = {
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37 &aio_name,
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38 NULL, /* create configuration */
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39 NULL, /* init configuration */
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40
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41 {
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42 ngx_aio_add_event, /* add an event */
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43 ngx_aio_del_event, /* delete an event */
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44 NULL, /* enable an event */
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45 NULL, /* disable an event */
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46 NULL, /* add an connection */
94
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47 ngx_aio_del_connection, /* delete an connection */
380
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48 NULL, /* process the changes */
93
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49 ngx_aio_process_events, /* process the events */
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50 ngx_aio_init, /* init the events */
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51 ngx_aio_done /* done the events */
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52 }
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53
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54 };
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55
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56 ngx_module_t ngx_aio_module = {
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a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
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57 NGX_MODULE,
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58 &ngx_aio_module_ctx, /* module context */
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59 NULL, /* module directives */
96
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60 NGX_EVENT_MODULE, /* module type */
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61 NULL, /* init module */
305
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62 NULL /* init process */
93
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63 };
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64
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65
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66
63
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67 #if (HAVE_KQUEUE)
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68
114
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69 static int ngx_aio_init(ngx_cycle_t *cycle)
93
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70 {
114
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71 if (ngx_kqueue_module_ctx.actions.init(cycle) == NGX_ERROR) {
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72 return NGX_ERROR;
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73 }
63
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74
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75 ngx_io = ngx_os_aio;
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76
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77 ngx_event_flags = NGX_USE_AIO_EVENT;
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78 ngx_event_actions = ngx_aio_module_ctx.actions;
63
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79
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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80
93
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81 return NGX_OK;
63
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82 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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83
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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84
114
ac69ab96328d nginx-0.0.1-2003-07-07-10:11:50 import
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85 static void ngx_aio_done(ngx_cycle_t *cycle)
93
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86 {
114
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87 ngx_kqueue_module_ctx.actions.done(cycle);
93
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88 }
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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89
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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90
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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91 /* The event adding and deleting are needed for the listening sockets */
93
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92
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93 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags)
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94 {
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95 return ngx_kqueue_module_ctx.actions.add(ev, event, flags);
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96 }
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97
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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98
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99 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags)
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100 {
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101 return ngx_kqueue_module_ctx.actions.del(ev, event, flags);
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102 }
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103
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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104
261
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105 static int ngx_aio_del_connection(ngx_connection_t *c, u_int flags)
94
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106 {
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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107 int rc;
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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diff changeset
108
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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diff changeset
109 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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110 return NGX_OK;
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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111 }
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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diff changeset
112
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
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113 rc = aio_cancel(c->fd, NULL);
94
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114
257
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115 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_cancel: %d", rc);
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
116
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
117 if (rc == AIO_CANCELED) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
118 c->read->active = c->write->active = 0;
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
119 return NGX_OK;
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
120 }
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
121
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
122 if (rc == AIO_ALLDONE) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
123 c->read->active = c->write->active = 0;
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
124 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
125 "aio_cancel() returned AIO_ALLDONE");
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
126 return NGX_OK;
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
127 }
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
128
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
129 if (rc == -1) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
130 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
131 "aio_cancel() failed");
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
132 return NGX_ERROR;
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
133 }
94
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
134
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
135 if (rc == AIO_NOTCANCELED) {
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
136 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
137 "aio_cancel() returned AIO_NOTCANCELED");
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
138
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
139 return NGX_ERROR;
94
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 return NGX_OK;
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
8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 93
diff changeset
145
305
4b1a3a4acc60 nginx-0.0.3-2004-04-02-19:13:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 261
diff changeset
146 static int ngx_aio_process_events(ngx_cycle_t *cycle)
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
147 {
380
5ce6561246a5 nginx-0.0.7-2004-07-07-10:15:04 import
Igor Sysoev <igor@sysoev.ru>
parents: 305
diff changeset
148 return ngx_kqueue_module_ctx.actions.process_events(cycle);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
149 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
150
95
b48066122884 nginx-0.0.1-2003-05-23-15:53:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 94
diff changeset
151 #endif /* HAVE_KQUEUE */
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
152
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
153
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
154 #if 0
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
155
6
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
156 /* 1 */
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
157 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
158 {
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
159 listen via SIGIO;
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
160 aio_* via SIGxxx;
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
161
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
162 sigsuspend()/sigwaitinfo()/sigtimedwait();
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
163 }
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
164
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
165 /* 2 */
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
166 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
167 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
168 unmask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
170 listen via SIGIO;
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
172 /* 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
173
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
174 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
175
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
176 mask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
177
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 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
179 look listen
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
180 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
181 else
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
182 aio
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
183 }
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
184
6
669801705ab1 nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents: 5
diff changeset
185 /* 3 */
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
186 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
187 {
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
188 #if 0
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
189 unmask signal
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
190
5
62b1a364857c nginx-0.0.1-2002-08-23-20:14:30 import
Igor Sysoev <igor@sysoev.ru>
parents: 0
diff changeset
191 /* 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
192
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193 select(listen);
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
195 mask signal
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
196 #endif
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
197
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
198 pselect(listen, mask);
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
199
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
200 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
201 look ready array
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202 }
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 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
205 {
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
206 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
207 }
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 91
diff changeset
208
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
209 #endif