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
|
|
11
|
|
12 #define DEFAULT_CONNECTIONS 512
|
|
13
|
|
14
|
16
|
15 extern ngx_module_t ngx_kqueue_module;
|
|
16 extern ngx_module_t ngx_devpoll_module;
|
|
17 extern ngx_module_t ngx_epoll_module;
|
|
18 extern ngx_module_t ngx_rtsig_module;
|
0
|
19 extern ngx_module_t ngx_select_module;
|
|
20
|
|
21
|
|
22 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
|
|
23 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
|
|
24 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
25
|
|
26 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
27 void *conf);
|
|
28 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
29 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
30 void *conf);
|
|
31
|
|
32 static void *ngx_event_create_conf(ngx_cycle_t *cycle);
|
|
33 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
|
|
34 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data);
|
|
35
|
|
36
|
|
37 static ngx_uint_t ngx_event_max_module;
|
|
38
|
|
39 ngx_uint_t ngx_event_flags;
|
|
40 ngx_event_actions_t ngx_event_actions;
|
|
41
|
|
42
|
|
43 ngx_atomic_t connection_counter;
|
|
44 ngx_atomic_t *ngx_connection_counter = &connection_counter;
|
|
45
|
|
46
|
|
47 ngx_atomic_t *ngx_accept_mutex_ptr;
|
|
48 ngx_atomic_t *ngx_accept_mutex;
|
|
49 ngx_uint_t ngx_accept_mutex_held;
|
|
50 ngx_msec_t ngx_accept_mutex_delay;
|
|
51 ngx_int_t ngx_accept_disabled;
|
|
52
|
|
53
|
|
54 #if (NGX_STAT_STUB)
|
|
55
|
|
56 ngx_atomic_t ngx_stat_accepted0;
|
|
57 ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
|
|
58 ngx_atomic_t ngx_stat_requests0;
|
|
59 ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
|
|
60 ngx_atomic_t ngx_stat_active0;
|
|
61 ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
|
|
62 ngx_atomic_t ngx_stat_reading0;
|
|
63 ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
|
|
64 ngx_atomic_t ngx_stat_writing0;
|
|
65 ngx_atomic_t *ngx_stat_writing = &ngx_stat_reading0;
|
|
66
|
|
67 #endif
|
|
68
|
|
69
|
|
70
|
|
71 static ngx_command_t ngx_events_commands[] = {
|
|
72
|
|
73 { ngx_string("events"),
|
|
74 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
|
|
75 ngx_events_block,
|
|
76 0,
|
|
77 0,
|
|
78 NULL },
|
|
79
|
|
80 ngx_null_command
|
|
81 };
|
|
82
|
|
83
|
|
84 static ngx_core_module_t ngx_events_module_ctx = {
|
|
85 ngx_string("events"),
|
|
86 NULL,
|
|
87 NULL
|
|
88 };
|
|
89
|
|
90
|
|
91 ngx_module_t ngx_events_module = {
|
|
92 NGX_MODULE,
|
|
93 &ngx_events_module_ctx, /* module context */
|
|
94 ngx_events_commands, /* module directives */
|
|
95 NGX_CORE_MODULE, /* module type */
|
|
96 NULL, /* init module */
|
|
97 NULL /* init process */
|
|
98 };
|
|
99
|
|
100
|
|
101 static ngx_str_t event_core_name = ngx_string("event_core");
|
|
102
|
|
103 static ngx_conf_post_t ngx_accept_mutex_post = { ngx_accept_mutex_check } ;
|
|
104
|
|
105
|
|
106 static ngx_command_t ngx_event_core_commands[] = {
|
|
107
|
|
108 { ngx_string("connections"),
|
|
109 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
110 ngx_event_connections,
|
|
111 0,
|
|
112 0,
|
|
113 NULL },
|
|
114
|
|
115 { ngx_string("use"),
|
|
116 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
117 ngx_event_use,
|
|
118 0,
|
|
119 0,
|
|
120 NULL },
|
|
121
|
|
122 { ngx_string("multi_accept"),
|
|
123 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
124 ngx_conf_set_flag_slot,
|
|
125 0,
|
|
126 offsetof(ngx_event_conf_t, multi_accept),
|
|
127 NULL },
|
|
128
|
|
129 { ngx_string("accept_mutex"),
|
|
130 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
131 ngx_conf_set_flag_slot,
|
|
132 0,
|
|
133 offsetof(ngx_event_conf_t, accept_mutex),
|
|
134 &ngx_accept_mutex_post },
|
|
135
|
|
136 { ngx_string("accept_mutex_delay"),
|
|
137 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
138 ngx_conf_set_msec_slot,
|
|
139 0,
|
|
140 offsetof(ngx_event_conf_t, accept_mutex_delay),
|
|
141 NULL },
|
|
142
|
|
143 { ngx_string("debug_connection"),
|
|
144 NGX_EVENT_CONF|NGX_CONF_TAKE1,
|
|
145 ngx_event_debug_connection,
|
|
146 0,
|
|
147 0,
|
|
148 NULL },
|
|
149
|
|
150 ngx_null_command
|
|
151 };
|
|
152
|
|
153
|
|
154 ngx_event_module_t ngx_event_core_module_ctx = {
|
|
155 &event_core_name,
|
|
156 ngx_event_create_conf, /* create configuration */
|
|
157 ngx_event_init_conf, /* init configuration */
|
|
158
|
|
159 { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
|
|
160 };
|
|
161
|
|
162
|
|
163 ngx_module_t ngx_event_core_module = {
|
|
164 NGX_MODULE,
|
|
165 &ngx_event_core_module_ctx, /* module context */
|
|
166 ngx_event_core_commands, /* module directives */
|
|
167 NGX_EVENT_MODULE, /* module type */
|
|
168 ngx_event_module_init, /* init module */
|
|
169 ngx_event_process_init /* init process */
|
|
170 };
|
|
171
|
|
172
|
|
173 static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle)
|
|
174 {
|
10
|
175 #if !(NGX_WIN32)
|
0
|
176
|
|
177 size_t size;
|
|
178 char *shared;
|
|
179 ngx_core_conf_t *ccf;
|
|
180 ngx_event_conf_t *ecf;
|
|
181
|
|
182 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
183
|
|
184 if (ccf->master == 0 || ngx_accept_mutex_ptr) {
|
|
185 return NGX_OK;
|
|
186 }
|
|
187
|
|
188 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
189
|
|
190
|
|
191 /* TODO: 128 is cache line size */
|
|
192
|
|
193 size = 128 /* ngx_accept_mutex */
|
|
194 + 128; /* ngx_connection_counter */
|
|
195
|
|
196 #if (NGX_STAT_STUB)
|
|
197
|
|
198 size += 128 /* ngx_stat_accepted */
|
|
199 + 128 /* ngx_stat_requests */
|
|
200 + 128 /* ngx_stat_active */
|
|
201 + 128 /* ngx_stat_reading */
|
|
202 + 128; /* ngx_stat_writing */
|
|
203
|
|
204 #endif
|
|
205
|
|
206 if (!(shared = ngx_create_shared_memory(size, cycle->log))) {
|
|
207 return NGX_ERROR;
|
|
208 }
|
|
209
|
|
210 ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
|
|
211 ngx_connection_counter = (ngx_atomic_t *) (shared + 128);
|
|
212
|
|
213 #if (NGX_STAT_STUB)
|
|
214
|
|
215 ngx_stat_accepted = (ngx_atomic_t *) (shared + 2 * 128);
|
|
216 ngx_stat_requests = (ngx_atomic_t *) (shared + 3 * 128);
|
|
217 ngx_stat_active = (ngx_atomic_t *) (shared + 4 * 128);
|
|
218 ngx_stat_reading = (ngx_atomic_t *) (shared + 5 * 128);
|
|
219 ngx_stat_writing = (ngx_atomic_t *) (shared + 6 * 128);
|
|
220
|
|
221 #endif
|
|
222
|
|
223 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
10
|
224 "counter: %p, %d",
|
0
|
225 ngx_connection_counter, *ngx_connection_counter);
|
|
226
|
|
227 #endif
|
|
228
|
|
229 return NGX_OK;
|
|
230 }
|
|
231
|
|
232
|
|
233 static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle)
|
|
234 {
|
|
235 ngx_uint_t m, i;
|
|
236 ngx_socket_t fd;
|
|
237 ngx_event_t *rev, *wev;
|
|
238 ngx_listening_t *s;
|
|
239 ngx_connection_t *c;
|
|
240 ngx_core_conf_t *ccf;
|
|
241 ngx_event_conf_t *ecf;
|
|
242 ngx_event_module_t *module;
|
10
|
243 #if (NGX_WIN32)
|
0
|
244 ngx_iocp_conf_t *iocpcf;
|
|
245 #endif
|
|
246
|
|
247 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
|
248 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
249
|
|
250 if (ngx_accept_mutex_ptr && ccf->worker_processes > 1 && ecf->accept_mutex)
|
|
251 {
|
|
252 ngx_accept_mutex = ngx_accept_mutex_ptr;
|
|
253 ngx_accept_mutex_held = 0;
|
|
254 ngx_accept_mutex_delay = ecf->accept_mutex_delay;
|
|
255 }
|
|
256
|
|
257 #if (NGX_THREADS)
|
|
258 if (!(ngx_posted_events_mutex = ngx_mutex_init(cycle->log, 0))) {
|
|
259 return NGX_ERROR;
|
|
260 }
|
|
261 #endif
|
|
262
|
|
263 if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
|
|
264 return NGX_ERROR;
|
|
265 }
|
|
266
|
|
267 cycle->connection_n = ecf->connections;
|
|
268
|
|
269 for (m = 0; ngx_modules[m]; m++) {
|
|
270 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
271 continue;
|
|
272 }
|
|
273
|
|
274 if (ngx_modules[m]->ctx_index == ecf->use) {
|
|
275 module = ngx_modules[m]->ctx;
|
|
276 if (module->actions.init(cycle) == NGX_ERROR) {
|
|
277 /* fatal */
|
|
278 exit(2);
|
|
279 }
|
|
280 break;
|
|
281 }
|
|
282 }
|
|
283
|
|
284 cycle->connections = ngx_alloc(sizeof(ngx_connection_t) * ecf->connections,
|
|
285 cycle->log);
|
|
286 if (cycle->connections == NULL) {
|
|
287 return NGX_ERROR;
|
|
288 }
|
|
289
|
|
290 c = cycle->connections;
|
|
291 for (i = 0; i < cycle->connection_n; i++) {
|
|
292 c[i].fd = (ngx_socket_t) -1;
|
|
293 c[i].data = NULL;
|
|
294 #if (NGX_THREADS)
|
|
295 c[i].lock = 0;
|
|
296 #endif
|
|
297 }
|
|
298
|
|
299 cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
|
|
300 cycle->log);
|
|
301 if (cycle->read_events == NULL) {
|
|
302 return NGX_ERROR;
|
|
303 }
|
|
304
|
|
305 rev = cycle->read_events;
|
|
306 for (i = 0; i < cycle->connection_n; i++) {
|
|
307 rev[i].closed = 1;
|
|
308 #if (NGX_THREADS)
|
|
309 rev[i].lock = &c[i].lock;
|
|
310 rev[i].own_lock = &c[i].lock;
|
|
311 #endif
|
|
312 }
|
|
313
|
|
314 cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * ecf->connections,
|
|
315 cycle->log);
|
|
316 if (cycle->write_events == NULL) {
|
|
317 return NGX_ERROR;
|
|
318 }
|
|
319
|
|
320 wev = cycle->write_events;
|
|
321 for (i = 0; i < cycle->connection_n; i++) {
|
|
322 wev[i].closed = 1;
|
|
323 #if (NGX_THREADS)
|
|
324 wev[i].lock = &c[i].lock;
|
|
325 wev[i].own_lock = &c[i].lock;
|
|
326 #endif
|
|
327 }
|
|
328
|
|
329 /* for each listening socket */
|
|
330
|
|
331 s = cycle->listening.elts;
|
|
332 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
333
|
|
334 fd = s[i].fd;
|
|
335
|
10
|
336 #if (NGX_WIN32)
|
0
|
337 /*
|
|
338 * Winsock assignes a socket number divisible by 4
|
|
339 * so to find a connection we divide a socket number by 4.
|
|
340 */
|
|
341
|
|
342 fd /= 4;
|
|
343 #endif
|
|
344
|
|
345 c = &cycle->connections[fd];
|
|
346 rev = &cycle->read_events[fd];
|
|
347 wev = &cycle->write_events[fd];
|
|
348
|
|
349 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
350 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
351
|
|
352 c->fd = s[i].fd;
|
|
353 c->listening = &s[i];
|
|
354
|
|
355 c->ctx = s[i].ctx;
|
|
356 c->servers = s[i].servers;
|
|
357 c->log = s[i].log;
|
|
358 c->read = rev;
|
|
359
|
|
360 /* required by iocp in "c->write->active = 1" */
|
|
361 c->write = wev;
|
|
362
|
|
363 /* required by poll */
|
|
364 wev->index = NGX_INVALID_INDEX;
|
|
365
|
|
366 rev->log = c->log;
|
|
367 rev->data = c;
|
|
368 rev->index = NGX_INVALID_INDEX;
|
|
369
|
|
370 rev->available = 0;
|
|
371
|
|
372 rev->accept = 1;
|
|
373
|
|
374 #if (HAVE_DEFERRED_ACCEPT)
|
|
375 rev->deferred_accept = s[i].deferred_accept;
|
|
376 #endif
|
|
377
|
|
378 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
|
|
379 if (s[i].remain) {
|
|
380
|
|
381 /*
|
|
382 * delete the old accept events that were bound to
|
|
383 * the old cycle read events array
|
|
384 */
|
|
385
|
|
386 if (ngx_del_event(&cycle->old_cycle->read_events[fd],
|
|
387 NGX_READ_EVENT, NGX_CLOSE_EVENT) == NGX_ERROR)
|
|
388 {
|
|
389 return NGX_ERROR;
|
|
390 }
|
|
391
|
|
392 cycle->old_cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
393 }
|
|
394 }
|
|
395
|
10
|
396 #if (NGX_WIN32)
|
0
|
397
|
|
398 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
10
|
399 rev->event_handler = ngx_event_acceptex;
|
0
|
400
|
|
401 if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
|
|
402 return NGX_ERROR;
|
|
403 }
|
|
404
|
|
405 iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
|
|
406 if (ngx_event_post_acceptex(&s[i], iocpcf->post_acceptex)
|
|
407 == NGX_ERROR)
|
|
408 {
|
|
409 return NGX_ERROR;
|
|
410 }
|
|
411
|
|
412 } else {
|
10
|
413 rev->event_handler = ngx_event_accept;
|
|
414
|
0
|
415 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
416 return NGX_ERROR;
|
|
417 }
|
|
418 }
|
|
419
|
|
420 #else
|
|
421
|
10
|
422 rev->event_handler = ngx_event_accept;
|
0
|
423
|
|
424 if (ngx_accept_mutex) {
|
|
425 continue;
|
|
426 }
|
|
427
|
|
428 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
429 if (ngx_add_conn(c) == NGX_ERROR) {
|
|
430 return NGX_ERROR;
|
|
431 }
|
|
432
|
|
433 } else {
|
|
434 if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
435 return NGX_ERROR;
|
|
436 }
|
|
437 }
|
|
438
|
|
439 #endif
|
|
440 }
|
|
441
|
|
442 return NGX_OK;
|
|
443 }
|
|
444
|
|
445
|
2
|
446 ngx_int_t ngx_send_lowat(ngx_connection_t *c, size_t lowat)
|
|
447 {
|
|
448 int sndlowat;
|
|
449
|
4
|
450 #if (NGX_HAVE_LOWAT_EVENT)
|
2
|
451
|
4
|
452 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
2
|
453 c->write->available = lowat;
|
|
454 return NGX_OK;
|
|
455 }
|
|
456
|
|
457 #endif
|
|
458
|
|
459 if (lowat == 0 || c->sndlowat) {
|
|
460 return NGX_OK;
|
|
461 }
|
|
462
|
|
463 sndlowat = (int) lowat;
|
|
464
|
|
465 if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
|
|
466 (const void *) &sndlowat, sizeof(int)) == -1)
|
|
467 {
|
|
468 ngx_connection_error(c, ngx_socket_errno,
|
|
469 "setsockopt(SO_SNDLOWAT) failed");
|
|
470 return NGX_ERROR;
|
|
471 }
|
|
472
|
|
473 c->sndlowat = 1;
|
|
474
|
|
475 return NGX_OK;
|
|
476 }
|
|
477
|
|
478
|
0
|
479 static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
480 {
|
|
481 int m;
|
|
482 char *rv;
|
|
483 void ***ctx;
|
|
484 ngx_conf_t pcf;
|
|
485 ngx_event_module_t *module;
|
|
486
|
|
487 /* count the number of the event modules and set up their indices */
|
|
488
|
|
489 ngx_event_max_module = 0;
|
|
490 for (m = 0; ngx_modules[m]; m++) {
|
|
491 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
492 continue;
|
|
493 }
|
|
494
|
|
495 ngx_modules[m]->ctx_index = ngx_event_max_module++;
|
|
496 }
|
|
497
|
|
498 ngx_test_null(ctx, ngx_pcalloc(cf->pool, sizeof(void *)), NGX_CONF_ERROR);
|
|
499
|
|
500 ngx_test_null(*ctx,
|
|
501 ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *)),
|
|
502 NGX_CONF_ERROR);
|
|
503
|
|
504 *(void **) conf = ctx;
|
|
505
|
|
506 for (m = 0; ngx_modules[m]; m++) {
|
|
507 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
508 continue;
|
|
509 }
|
|
510
|
|
511 module = ngx_modules[m]->ctx;
|
|
512
|
|
513 if (module->create_conf) {
|
|
514 ngx_test_null((*ctx)[ngx_modules[m]->ctx_index],
|
|
515 module->create_conf(cf->cycle),
|
|
516 NGX_CONF_ERROR);
|
|
517 }
|
|
518 }
|
|
519
|
|
520 pcf = *cf;
|
|
521 cf->ctx = ctx;
|
|
522 cf->module_type = NGX_EVENT_MODULE;
|
|
523 cf->cmd_type = NGX_EVENT_CONF;
|
|
524 rv = ngx_conf_parse(cf, NULL);
|
|
525 *cf = pcf;
|
|
526
|
|
527 if (rv != NGX_CONF_OK)
|
|
528 return rv;
|
|
529
|
|
530 for (m = 0; ngx_modules[m]; m++) {
|
|
531 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
532 continue;
|
|
533 }
|
|
534
|
|
535 module = ngx_modules[m]->ctx;
|
|
536
|
|
537 if (module->init_conf) {
|
|
538 rv = module->init_conf(cf->cycle,
|
|
539 (*ctx)[ngx_modules[m]->ctx_index]);
|
|
540 if (rv != NGX_CONF_OK) {
|
|
541 return rv;
|
|
542 }
|
|
543 }
|
|
544 }
|
|
545
|
|
546 return NGX_CONF_OK;
|
|
547 }
|
|
548
|
|
549
|
|
550 static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
551 void *conf)
|
|
552 {
|
|
553 ngx_event_conf_t *ecf = conf;
|
|
554
|
|
555 ngx_str_t *value;
|
|
556
|
|
557 if (ecf->connections != NGX_CONF_UNSET_UINT) {
|
|
558 return "is duplicate" ;
|
|
559 }
|
|
560
|
|
561 value = cf->args->elts;
|
|
562 ecf->connections = ngx_atoi(value[1].data, value[1].len);
|
|
563 if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
|
|
564 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
565 "invalid number \"%V\"", &value[1]);
|
0
|
566
|
|
567 return NGX_CONF_ERROR;
|
|
568 }
|
|
569
|
|
570 cf->cycle->connection_n = ecf->connections;
|
|
571
|
|
572 return NGX_CONF_OK;
|
|
573 }
|
|
574
|
|
575
|
|
576 static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
577 {
|
|
578 ngx_event_conf_t *ecf = conf;
|
|
579
|
|
580 ngx_int_t m;
|
|
581 ngx_str_t *value;
|
|
582 ngx_event_conf_t *old_ecf;
|
|
583 ngx_event_module_t *module;
|
|
584
|
|
585 if (ecf->use != NGX_CONF_UNSET_UINT) {
|
|
586 return "is duplicate" ;
|
|
587 }
|
|
588
|
|
589 value = cf->args->elts;
|
|
590
|
|
591 if (cf->cycle->old_cycle->conf_ctx) {
|
|
592 old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
|
|
593 ngx_event_core_module);
|
|
594 } else {
|
|
595 old_ecf = NULL;
|
|
596 }
|
|
597
|
|
598
|
|
599 for (m = 0; ngx_modules[m]; m++) {
|
|
600 if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
|
|
601 continue;
|
|
602 }
|
|
603
|
|
604 module = ngx_modules[m]->ctx;
|
|
605 if (module->name->len == value[1].len) {
|
|
606 if (ngx_strcmp(module->name->data, value[1].data) == 0) {
|
|
607 ecf->use = ngx_modules[m]->ctx_index;
|
|
608 ecf->name = module->name->data;
|
|
609
|
|
610 if (ngx_process == NGX_PROCESS_SINGLE
|
|
611 && old_ecf
|
|
612 && old_ecf->use != ecf->use)
|
|
613 {
|
|
614 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
16
|
615 "when the server runs without a master process "
|
|
616 "the \"%V\" event type must be the same as "
|
|
617 "in previous configuration - \"%s\" "
|
|
618 "and it can not be changed on the fly, "
|
|
619 "to change it you need to stop server "
|
|
620 "and start it again",
|
|
621 &value[1], old_ecf->name);
|
0
|
622
|
|
623 return NGX_CONF_ERROR;
|
|
624 }
|
|
625
|
|
626 return NGX_CONF_OK;
|
|
627 }
|
|
628 }
|
|
629 }
|
|
630
|
|
631 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
632 "invalid event type \"%V\"", &value[1]);
|
0
|
633
|
|
634 return NGX_CONF_ERROR;
|
|
635 }
|
|
636
|
|
637
|
|
638 static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
639 void *conf)
|
|
640 {
|
|
641 #if (NGX_DEBUG)
|
|
642 ngx_event_conf_t *ecf = conf;
|
|
643
|
|
644 in_addr_t *addr;
|
|
645 ngx_str_t *value;
|
|
646 struct hostent *h;
|
|
647
|
|
648 value = cf->args->elts;
|
|
649
|
|
650 /* AF_INET only */
|
|
651
|
|
652 if (!(addr = ngx_push_array(&ecf->debug_connection))) {
|
|
653 return NGX_CONF_ERROR;
|
|
654 }
|
|
655
|
|
656 *addr = inet_addr((char *) value[1].data);
|
|
657
|
|
658 if (*addr != INADDR_NONE) {
|
|
659 return NGX_OK;
|
|
660 }
|
|
661
|
|
662 h = gethostbyname((char *) value[1].data);
|
|
663
|
|
664 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
665 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
10
|
666 "host \"%s\" not found", value[1].data);
|
0
|
667 return NGX_CONF_ERROR;
|
|
668 }
|
|
669
|
|
670 *addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
671
|
|
672 #else
|
|
673
|
|
674 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
675 "\"debug_connection\" is ignored, you need to rebuild "
|
|
676 "nginx using --with-debug option to enable it");
|
|
677
|
|
678 #endif
|
|
679
|
|
680 return NGX_OK;
|
|
681 }
|
|
682
|
|
683
|
|
684 static void *ngx_event_create_conf(ngx_cycle_t *cycle)
|
|
685 {
|
|
686 ngx_event_conf_t *ecf;
|
|
687
|
|
688 ngx_test_null(ecf, ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t)),
|
|
689 NGX_CONF_ERROR);
|
|
690
|
|
691 ecf->connections = NGX_CONF_UNSET_UINT;
|
|
692 ecf->use = NGX_CONF_UNSET_UINT;
|
|
693 ecf->multi_accept = NGX_CONF_UNSET;
|
|
694 ecf->accept_mutex = NGX_CONF_UNSET;
|
|
695 ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
|
|
696 ecf->name = (void *) NGX_CONF_UNSET;
|
|
697
|
|
698 #if (NGX_DEBUG)
|
|
699 ngx_init_array(ecf->debug_connection, cycle->pool, 5, sizeof(in_addr_t),
|
|
700 NGX_CONF_ERROR);
|
|
701 #endif
|
|
702
|
|
703 return ecf;
|
|
704 }
|
|
705
|
|
706
|
|
707 static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
708 {
|
|
709 ngx_event_conf_t *ecf = conf;
|
16
|
710
|
|
711 int fd, rtsig;
|
|
712 ngx_int_t i, connections;
|
|
713 ngx_module_t *module;
|
|
714 ngx_core_conf_t *ccf;
|
|
715 ngx_event_module_t *event_module;
|
|
716
|
|
717 connections = NGX_CONF_UNSET_UINT;
|
|
718 module = NULL;
|
|
719 rtsig = 0;
|
|
720 fd = 0;
|
|
721
|
|
722 #if (HAVE_EPOLL) && !(TEST_BUILD_EPOLL)
|
|
723
|
|
724 fd = epoll_create(100);
|
|
725
|
|
726 if (fd != -1) {
|
|
727 close(fd);
|
|
728 connections = DEFAULT_CONNECTIONS;
|
|
729 module = &ngx_epoll_module;
|
|
730
|
|
731 } else if (ngx_errno != NGX_ENOSYS) {
|
|
732 connections = DEFAULT_CONNECTIONS;
|
|
733 module = &ngx_epoll_module;
|
|
734 }
|
|
735
|
|
736 #endif
|
|
737
|
0
|
738 #if (HAVE_RTSIG)
|
16
|
739
|
|
740 if (module == NULL) {
|
|
741 connections = DEFAULT_CONNECTIONS;
|
|
742 module = &ngx_rtsig_module;
|
|
743 rtsig = 1;
|
|
744 }
|
|
745
|
|
746 #endif
|
|
747
|
|
748 #if (HAVE_DEVPOLL)
|
|
749
|
|
750 connections = DEFAULT_CONNECTIONS;
|
|
751 module = &ngx_devpoll_module;
|
|
752
|
0
|
753 #endif
|
|
754
|
|
755 #if (HAVE_KQUEUE)
|
|
756
|
16
|
757 connections = DEFAULT_CONNECTIONS;
|
|
758 module = &ngx_kqueue_module;
|
0
|
759
|
16
|
760 #endif
|
0
|
761
|
16
|
762 #if (HAVE_SELECT)
|
0
|
763
|
16
|
764 if (module == NULL) {
|
0
|
765
|
10
|
766 #if (NGX_WIN32)
|
16
|
767 connections = DEFAULT_CONNECTIONS;
|
0
|
768 #else
|
16
|
769 connections = FD_SETSIZE < DEFAULT_CONNECTIONS ? FD_SETSIZE:
|
|
770 DEFAULT_CONNECTIONS;
|
|
771 #endif
|
|
772 module = &ngx_select_module;
|
|
773 }
|
|
774
|
0
|
775 #endif
|
|
776
|
16
|
777 if (module == NULL) {
|
|
778 for (i = 0; ngx_modules[i]; i++) {
|
|
779 if (ngx_modules[i]->type == NGX_EVENT_MODULE) {
|
|
780 event_module = ngx_modules[i]->ctx;
|
0
|
781
|
16
|
782 if (ngx_strcmp(event_module->name->data, event_core_name.data)
|
|
783 == 0)
|
|
784 {
|
|
785 continue;
|
|
786 }
|
0
|
787
|
16
|
788 module = ngx_modules[i];
|
|
789 break;
|
0
|
790 }
|
|
791 }
|
|
792 }
|
|
793
|
16
|
794 if (module == NULL) {
|
0
|
795 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
|
|
796 return NGX_CONF_ERROR;
|
|
797 }
|
|
798
|
16
|
799 ngx_conf_init_unsigned_value(ecf->connections, connections);
|
|
800 cycle->connection_n = ecf->connections;
|
0
|
801
|
16
|
802 ngx_conf_init_unsigned_value(ecf->use, module->ctx_index);
|
0
|
803
|
16
|
804 event_module = module->ctx;
|
|
805 ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
|
0
|
806
|
|
807 ngx_conf_init_value(ecf->multi_accept, 0);
|
|
808 ngx_conf_init_value(ecf->accept_mutex, 1);
|
|
809 ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
|
|
810
|
16
|
811
|
|
812 if (!rtsig || ecf->accept_mutex) {
|
|
813 return NGX_CONF_OK;
|
0
|
814 }
|
16
|
815
|
|
816 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
|
0
|
817
|
16
|
818 if (ccf->worker_processes == 0) {
|
|
819 return NGX_CONF_OK;
|
|
820 }
|
|
821
|
|
822 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
823 "the \"rtsig\" method requires \"accept_mutex\" to be on");
|
|
824
|
|
825 return NGX_CONF_ERROR;
|
0
|
826 }
|
|
827
|
|
828
|
|
829 static char *ngx_accept_mutex_check(ngx_conf_t *cf, void *post, void *data)
|
|
830 {
|
|
831 #if !(NGX_HAVE_ATOMIC_OPS)
|
|
832
|
|
833 ngx_flag_t *fp = data;
|
|
834
|
|
835 *fp = 0;
|
|
836
|
|
837 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
838 "\"accept_mutex\" is not supported, ignored");
|
|
839
|
|
840 #endif
|
|
841
|
|
842 return NGX_CONF_OK;
|
|
843 }
|