|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_event.h>
|
|
|
10 #include <ngx_aio.h>
|
|
|
11
|
|
18
|
12 #if (NGX_HAVE_KQUEUE)
|
|
0
|
13 #include <ngx_kqueue_module.h>
|
|
|
14 #endif
|
|
|
15
|
|
|
16
|
|
|
17 static int ngx_aio_init(ngx_cycle_t *cycle);
|
|
|
18 static void ngx_aio_done(ngx_cycle_t *cycle);
|
|
|
19 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags);
|
|
|
20 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags);
|
|
|
21 static int ngx_aio_del_connection(ngx_connection_t *c, u_int flags);
|
|
|
22 static int ngx_aio_process_events(ngx_cycle_t *cycle);
|
|
|
23
|
|
|
24
|
|
|
25 ngx_os_io_t ngx_os_aio = {
|
|
|
26 ngx_aio_read,
|
|
|
27 ngx_aio_read_chain,
|
|
|
28 ngx_aio_write,
|
|
|
29 ngx_aio_write_chain,
|
|
18
|
30 0
|
|
0
|
31 };
|
|
|
32
|
|
|
33
|
|
|
34 static ngx_str_t aio_name = ngx_string("aio");
|
|
|
35
|
|
|
36 ngx_event_module_t ngx_aio_module_ctx = {
|
|
|
37 &aio_name,
|
|
|
38 NULL, /* create configuration */
|
|
|
39 NULL, /* init configuration */
|
|
|
40
|
|
|
41 {
|
|
|
42 ngx_aio_add_event, /* add an event */
|
|
|
43 ngx_aio_del_event, /* delete an event */
|
|
|
44 NULL, /* enable an event */
|
|
|
45 NULL, /* disable an event */
|
|
|
46 NULL, /* add an connection */
|
|
|
47 ngx_aio_del_connection, /* delete an connection */
|
|
|
48 NULL, /* process the changes */
|
|
|
49 ngx_aio_process_events, /* process the events */
|
|
|
50 ngx_aio_init, /* init the events */
|
|
|
51 ngx_aio_done /* done the events */
|
|
|
52 }
|
|
|
53
|
|
|
54 };
|
|
|
55
|
|
|
56 ngx_module_t ngx_aio_module = {
|
|
|
57 NGX_MODULE,
|
|
|
58 &ngx_aio_module_ctx, /* module context */
|
|
|
59 NULL, /* module directives */
|
|
|
60 NGX_EVENT_MODULE, /* module type */
|
|
|
61 NULL, /* init module */
|
|
|
62 NULL /* init process */
|
|
|
63 };
|
|
|
64
|
|
|
65
|
|
|
66
|
|
18
|
67 #if (NGX_HAVE_KQUEUE)
|
|
0
|
68
|
|
|
69 static int ngx_aio_init(ngx_cycle_t *cycle)
|
|
|
70 {
|
|
|
71 if (ngx_kqueue_module_ctx.actions.init(cycle) == NGX_ERROR) {
|
|
|
72 return NGX_ERROR;
|
|
|
73 }
|
|
|
74
|
|
|
75 ngx_io = ngx_os_aio;
|
|
|
76
|
|
|
77 ngx_event_flags = NGX_USE_AIO_EVENT;
|
|
|
78 ngx_event_actions = ngx_aio_module_ctx.actions;
|
|
|
79
|
|
|
80
|
|
|
81 return NGX_OK;
|
|
|
82 }
|
|
|
83
|
|
|
84
|
|
|
85 static void ngx_aio_done(ngx_cycle_t *cycle)
|
|
|
86 {
|
|
|
87 ngx_kqueue_module_ctx.actions.done(cycle);
|
|
|
88 }
|
|
|
89
|
|
|
90
|
|
|
91 /* The event adding and deleting are needed for the listening sockets */
|
|
|
92
|
|
|
93 static int ngx_aio_add_event(ngx_event_t *ev, int event, u_int flags)
|
|
|
94 {
|
|
|
95 return ngx_kqueue_module_ctx.actions.add(ev, event, flags);
|
|
|
96 }
|
|
|
97
|
|
|
98
|
|
|
99 static int ngx_aio_del_event(ngx_event_t *ev, int event, u_int flags)
|
|
|
100 {
|
|
|
101 return ngx_kqueue_module_ctx.actions.del(ev, event, flags);
|
|
|
102 }
|
|
|
103
|
|
|
104
|
|
|
105 static int ngx_aio_del_connection(ngx_connection_t *c, u_int flags)
|
|
|
106 {
|
|
|
107 int rc;
|
|
|
108
|
|
|
109 if (c->read->active == 0 && c->write->active == 0) {
|
|
|
110 return NGX_OK;
|
|
|
111 }
|
|
|
112
|
|
10
|
113 if (flags & NGX_CLOSE_EVENT) {
|
|
|
114 return NGX_OK;
|
|
|
115 }
|
|
|
116
|
|
0
|
117 rc = aio_cancel(c->fd, NULL);
|
|
|
118
|
|
|
119 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_cancel: %d", rc);
|
|
|
120
|
|
|
121 if (rc == AIO_CANCELED) {
|
|
|
122 c->read->active = c->write->active = 0;
|
|
|
123 return NGX_OK;
|
|
|
124 }
|
|
|
125
|
|
|
126 if (rc == AIO_ALLDONE) {
|
|
|
127 c->read->active = c->write->active = 0;
|
|
|
128 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
129 "aio_cancel() returned AIO_ALLDONE");
|
|
|
130 return NGX_OK;
|
|
|
131 }
|
|
|
132
|
|
|
133 if (rc == -1) {
|
|
|
134 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
|
135 "aio_cancel() failed");
|
|
|
136 return NGX_ERROR;
|
|
|
137 }
|
|
|
138
|
|
|
139 if (rc == AIO_NOTCANCELED) {
|
|
|
140 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
141 "aio_cancel() returned AIO_NOTCANCELED");
|
|
|
142
|
|
|
143 return NGX_ERROR;
|
|
|
144 }
|
|
|
145
|
|
|
146 return NGX_OK;
|
|
|
147 }
|
|
|
148
|
|
|
149
|
|
|
150 static int ngx_aio_process_events(ngx_cycle_t *cycle)
|
|
|
151 {
|
|
|
152 return ngx_kqueue_module_ctx.actions.process_events(cycle);
|
|
|
153 }
|
|
|
154
|
|
18
|
155 #endif /* NGX_HAVE_KQUEUE */
|
|
0
|
156
|
|
|
157
|
|
|
158 #if 0
|
|
|
159
|
|
|
160 /* 1 */
|
|
|
161 int ngx_posix_aio_process_events(ngx_log_t *log)
|
|
|
162 {
|
|
|
163 listen via SIGIO;
|
|
|
164 aio_* via SIGxxx;
|
|
|
165
|
|
|
166 sigsuspend()/sigwaitinfo()/sigtimedwait();
|
|
|
167 }
|
|
|
168
|
|
|
169 /* 2 */
|
|
|
170 int ngx_posix_aio_process_events(ngx_log_t *log)
|
|
|
171 {
|
|
|
172 unmask signal
|
|
|
173
|
|
|
174 listen via SIGIO;
|
|
|
175
|
|
|
176 /* BUG: SIGIO can be delivered before aio_*() */
|
|
|
177
|
|
|
178 aio_suspend()/aiowait()/aio_waitcomplete() with timeout
|
|
|
179
|
|
|
180 mask signal
|
|
|
181
|
|
|
182 if (ngx_socket_errno == NGX_EINTR)
|
|
|
183 look listen
|
|
|
184 select()/accept() nb listen sockets
|
|
|
185 else
|
|
|
186 aio
|
|
|
187 }
|
|
|
188
|
|
|
189 /* 3 */
|
|
|
190 int ngx_posix_aio_process_events(ngx_log_t *log)
|
|
|
191 {
|
|
|
192 #if 0
|
|
|
193 unmask signal
|
|
|
194
|
|
|
195 /* BUG: AIO signal can be delivered before select() */
|
|
|
196
|
|
|
197 select(listen);
|
|
|
198
|
|
|
199 mask signal
|
|
|
200 #endif
|
|
|
201
|
|
|
202 pselect(listen, mask);
|
|
|
203
|
|
|
204 if (ngx_socket_errno == NGX_EINTR)
|
|
|
205 look ready array
|
|
|
206 }
|
|
|
207
|
|
|
208 void aio_sig_handler(int signo, siginfo_t *siginfo, void *context)
|
|
|
209 {
|
|
|
210 push siginfo->si_value.sival_ptr
|
|
|
211 }
|
|
|
212
|
|
|
213 #endif
|
