|
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
|
|
|
13 static ngx_int_t ngx_select_init(ngx_cycle_t *cycle);
|
|
|
14 static void ngx_select_done(ngx_cycle_t *cycle);
|
|
|
15 static ngx_int_t ngx_select_add_event(ngx_event_t *ev, int event, u_int flags);
|
|
|
16 static ngx_int_t ngx_select_del_event(ngx_event_t *ev, int event, u_int flags);
|
|
|
17 static ngx_int_t ngx_select_process_events(ngx_cycle_t *cycle);
|
|
|
18 static char *ngx_select_init_conf(ngx_cycle_t *cycle, void *conf);
|
|
|
19
|
|
|
20
|
|
|
21 static fd_set master_read_fd_set;
|
|
|
22 static fd_set master_write_fd_set;
|
|
|
23 static fd_set work_read_fd_set;
|
|
|
24 static fd_set work_write_fd_set;
|
|
|
25
|
|
10
|
26 #if (NGX_WIN32)
|
|
0
|
27 static int max_read;
|
|
|
28 static int max_write;
|
|
|
29 #else
|
|
|
30 static int max_fd;
|
|
|
31 #endif
|
|
|
32
|
|
|
33 static ngx_uint_t nevents;
|
|
|
34
|
|
|
35 static ngx_event_t **event_index;
|
|
|
36 #if 0
|
|
|
37 static ngx_event_t **ready_index;
|
|
|
38 #endif
|
|
|
39
|
|
|
40 static ngx_event_t *accept_events;
|
|
|
41
|
|
|
42
|
|
|
43 static ngx_str_t select_name = ngx_string("select");
|
|
|
44
|
|
|
45 ngx_event_module_t ngx_select_module_ctx = {
|
|
|
46 &select_name,
|
|
|
47 NULL, /* create configuration */
|
|
|
48 ngx_select_init_conf, /* init configuration */
|
|
|
49
|
|
|
50 {
|
|
|
51 ngx_select_add_event, /* add an event */
|
|
|
52 ngx_select_del_event, /* delete an event */
|
|
|
53 ngx_select_add_event, /* enable an event */
|
|
|
54 ngx_select_del_event, /* disable an event */
|
|
|
55 NULL, /* add an connection */
|
|
|
56 NULL, /* delete an connection */
|
|
|
57 NULL, /* process the changes */
|
|
|
58 ngx_select_process_events, /* process the events */
|
|
|
59 ngx_select_init, /* init the events */
|
|
|
60 ngx_select_done /* done the events */
|
|
|
61 }
|
|
|
62
|
|
|
63 };
|
|
|
64
|
|
|
65 ngx_module_t ngx_select_module = {
|
|
|
66 NGX_MODULE,
|
|
|
67 &ngx_select_module_ctx, /* module context */
|
|
|
68 NULL, /* module directives */
|
|
|
69 NGX_EVENT_MODULE, /* module type */
|
|
|
70 NULL, /* init module */
|
|
|
71 NULL /* init process */
|
|
|
72 };
|
|
|
73
|
|
|
74
|
|
50
|
75 static ngx_int_t
|
|
|
76 ngx_select_init(ngx_cycle_t *cycle)
|
|
0
|
77 {
|
|
|
78 ngx_event_t **index;
|
|
|
79
|
|
|
80 if (event_index == NULL) {
|
|
|
81 FD_ZERO(&master_read_fd_set);
|
|
|
82 FD_ZERO(&master_write_fd_set);
|
|
|
83 nevents = 0;
|
|
|
84 }
|
|
|
85
|
|
|
86 if (ngx_process == NGX_PROCESS_WORKER
|
|
|
87 || cycle->old_cycle == NULL
|
|
|
88 || cycle->old_cycle->connection_n < cycle->connection_n)
|
|
|
89 {
|
|
50
|
90 index = ngx_alloc(sizeof(ngx_event_t *) * 2 * cycle->connection_n,
|
|
|
91 cycle->log);
|
|
|
92 if (index == NULL) {
|
|
|
93 return NGX_ERROR;
|
|
|
94 }
|
|
0
|
95
|
|
|
96 if (event_index) {
|
|
|
97 ngx_memcpy(index, event_index, sizeof(ngx_event_t *) * nevents);
|
|
|
98 ngx_free(event_index);
|
|
|
99 }
|
|
|
100 event_index = index;
|
|
|
101
|
|
|
102 #if 0
|
|
|
103 if (ready_index) {
|
|
|
104 ngx_free(ready_index);
|
|
|
105 }
|
|
50
|
106
|
|
|
107 ready_index = ngx_alloc(sizeof(ngx_event_t *) * 2 * cycle->connection_n,
|
|
|
108 cycle->log);
|
|
|
109 if (ready_index == NULL) {
|
|
|
110 return NGX_ERROR;
|
|
|
111 }
|
|
0
|
112 #endif
|
|
|
113 }
|
|
|
114
|
|
|
115 ngx_io = ngx_os_io;
|
|
|
116
|
|
|
117 ngx_event_actions = ngx_select_module_ctx.actions;
|
|
|
118
|
|
|
119 ngx_event_flags = NGX_USE_LEVEL_EVENT|NGX_USE_ONESHOT_EVENT;
|
|
|
120
|
|
10
|
121 #if (NGX_WIN32)
|
|
0
|
122 max_read = max_write = 0;
|
|
|
123 #else
|
|
|
124 max_fd = -1;
|
|
|
125 #endif
|
|
|
126
|
|
|
127 return NGX_OK;
|
|
|
128 }
|
|
|
129
|
|
|
130
|
|
50
|
131 static void
|
|
|
132 ngx_select_done(ngx_cycle_t *cycle)
|
|
0
|
133 {
|
|
|
134 ngx_free(event_index);
|
|
|
135 #if 0
|
|
|
136 ngx_free(ready_index);
|
|
|
137 #endif
|
|
|
138
|
|
|
139 event_index = NULL;
|
|
|
140 }
|
|
|
141
|
|
|
142
|
|
50
|
143 static ngx_int_t
|
|
|
144 ngx_select_add_event(ngx_event_t *ev, int event, u_int flags)
|
|
0
|
145 {
|
|
|
146 ngx_connection_t *c;
|
|
|
147
|
|
|
148 c = ev->data;
|
|
|
149
|
|
|
150 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
|
151 "select add event fd:%d ev:%d", c->fd, event);
|
|
|
152
|
|
|
153 if (ev->index != NGX_INVALID_INDEX) {
|
|
|
154 ngx_log_error(NGX_LOG_ALERT, ev->log, 0,
|
|
|
155 "select event fd:%d ev:%d is already set", c->fd, event);
|
|
|
156 return NGX_OK;
|
|
|
157 }
|
|
|
158
|
|
10
|
159 #if (NGX_WIN32)
|
|
0
|
160
|
|
|
161 if ((event == NGX_READ_EVENT) && (max_read >= FD_SETSIZE)
|
|
|
162 || (event == NGX_WRITE_EVENT) && (max_write >= FD_SETSIZE))
|
|
|
163 {
|
|
|
164 ngx_log_error(NGX_LOG_ERR, ev->log, 0,
|
|
|
165 "maximum number of descriptors "
|
|
|
166 "supported by select() is %d", FD_SETSIZE);
|
|
|
167 return NGX_ERROR;
|
|
|
168 }
|
|
|
169
|
|
|
170 if (event == NGX_READ_EVENT) {
|
|
|
171 FD_SET(c->fd, &master_read_fd_set);
|
|
|
172 max_read++;
|
|
|
173
|
|
|
174 } else if (event == NGX_WRITE_EVENT) {
|
|
|
175 FD_SET(c->fd, &master_write_fd_set);
|
|
|
176 max_write++;
|
|
|
177 }
|
|
|
178
|
|
|
179 #else
|
|
|
180
|
|
|
181 if (event == NGX_READ_EVENT) {
|
|
|
182 FD_SET(c->fd, &master_read_fd_set);
|
|
|
183
|
|
|
184 } else if (event == NGX_WRITE_EVENT) {
|
|
|
185 FD_SET(c->fd, &master_write_fd_set);
|
|
|
186 }
|
|
|
187
|
|
|
188 if (max_fd != -1 && max_fd < c->fd) {
|
|
|
189 max_fd = c->fd;
|
|
|
190 }
|
|
|
191
|
|
|
192 #endif
|
|
|
193
|
|
|
194 ev->active = 1;
|
|
|
195 ev->oneshot = (u_char) ((flags & NGX_ONESHOT_EVENT) ? 1 : 0);
|
|
|
196
|
|
|
197 event_index[nevents] = ev;
|
|
|
198 ev->index = nevents;
|
|
|
199 nevents++;
|
|
|
200
|
|
|
201 return NGX_OK;
|
|
|
202 }
|
|
|
203
|
|
|
204
|
|
50
|
205 static ngx_int_t
|
|
|
206 ngx_select_del_event(ngx_event_t *ev, int event, u_int flags)
|
|
0
|
207 {
|
|
|
208 ngx_connection_t *c;
|
|
|
209
|
|
|
210 c = ev->data;
|
|
|
211
|
|
|
212 ev->active = 0;
|
|
|
213
|
|
|
214 if (ev->index == NGX_INVALID_INDEX) {
|
|
|
215 return NGX_OK;
|
|
|
216 }
|
|
|
217
|
|
|
218 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0,
|
|
|
219 "select del event fd:%d ev:%d", c->fd, event);
|
|
|
220
|
|
10
|
221 #if (NGX_WIN32)
|
|
0
|
222
|
|
|
223 if (event == NGX_READ_EVENT) {
|
|
|
224 FD_CLR(c->fd, &master_read_fd_set);
|
|
|
225 max_read--;
|
|
|
226
|
|
|
227 } else if (event == NGX_WRITE_EVENT) {
|
|
|
228 FD_CLR(c->fd, &master_write_fd_set);
|
|
|
229 max_write--;
|
|
|
230 }
|
|
|
231
|
|
|
232 #else
|
|
|
233
|
|
|
234 if (event == NGX_READ_EVENT) {
|
|
|
235 FD_CLR(c->fd, &master_read_fd_set);
|
|
|
236
|
|
|
237 } else if (event == NGX_WRITE_EVENT) {
|
|
|
238 FD_CLR(c->fd, &master_write_fd_set);
|
|
|
239 }
|
|
|
240
|
|
|
241 if (max_fd == c->fd) {
|
|
|
242 max_fd = -1;
|
|
|
243 }
|
|
|
244
|
|
|
245 #endif
|
|
|
246
|
|
|
247 if (ev->index < (u_int) --nevents) {
|
|
|
248 event_index[ev->index] = event_index[nevents];
|
|
|
249 event_index[ev->index]->index = ev->index;
|
|
|
250 }
|
|
|
251
|
|
|
252 ev->index = NGX_INVALID_INDEX;
|
|
|
253
|
|
|
254 return NGX_OK;
|
|
|
255 }
|
|
|
256
|
|
|
257
|
|
50
|
258 static ngx_int_t
|
|
|
259 ngx_select_process_events(ngx_cycle_t *cycle)
|
|
0
|
260 {
|
|
|
261 int ready, nready;
|
|
|
262 ngx_uint_t i, found, lock, expire;
|
|
|
263 ngx_err_t err;
|
|
|
264 ngx_msec_t timer;
|
|
|
265 ngx_event_t *ev;
|
|
|
266 ngx_connection_t *c;
|
|
|
267 ngx_epoch_msec_t delta;
|
|
|
268 struct timeval tv, *tp;
|
|
18
|
269 #if (NGX_HAVE_SELECT_CHANGE_TIMEOUT)
|
|
0
|
270 static ngx_epoch_msec_t deltas = 0;
|
|
|
271 #endif
|
|
|
272
|
|
|
273 for ( ;; ) {
|
|
|
274 timer = ngx_event_find_timer();
|
|
|
275
|
|
|
276 if (timer != 0) {
|
|
|
277 break;
|
|
|
278 }
|
|
|
279
|
|
|
280 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
281 "select expired timer");
|
|
|
282
|
|
|
283 ngx_event_expire_timers((ngx_msec_t)
|
|
|
284 (ngx_elapsed_msec - ngx_old_elapsed_msec));
|
|
|
285 }
|
|
|
286
|
|
|
287 ngx_old_elapsed_msec = ngx_elapsed_msec;
|
|
|
288
|
|
|
289 expire = 1;
|
|
|
290
|
|
10
|
291 #if !(NGX_WIN32)
|
|
0
|
292
|
|
|
293 if (ngx_accept_mutex) {
|
|
|
294 if (ngx_accept_disabled > 0) {
|
|
|
295 ngx_accept_disabled--;
|
|
|
296
|
|
|
297 } else {
|
|
|
298 if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
|
|
|
299 return NGX_ERROR;
|
|
|
300 }
|
|
|
301
|
|
|
302 if (ngx_accept_mutex_held == 0
|
|
|
303 && (timer == NGX_TIMER_INFINITE
|
|
|
304 || timer > ngx_accept_mutex_delay))
|
|
|
305 {
|
|
|
306 timer = ngx_accept_mutex_delay;
|
|
|
307 expire = 0;
|
|
|
308 }
|
|
|
309 }
|
|
|
310 }
|
|
|
311
|
|
|
312 if (max_fd == -1) {
|
|
|
313 for (i = 0; i < nevents; i++) {
|
|
|
314 c = event_index[i]->data;
|
|
|
315 if (max_fd < c->fd) {
|
|
|
316 max_fd = c->fd;
|
|
|
317 }
|
|
|
318 }
|
|
|
319
|
|
|
320 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
321 "change max_fd: %d", max_fd);
|
|
|
322 }
|
|
|
323
|
|
|
324 #endif
|
|
|
325
|
|
|
326 #if (NGX_DEBUG)
|
|
|
327 if (cycle->log->log_level & NGX_LOG_DEBUG_ALL) {
|
|
|
328 for (i = 0; i < nevents; i++) {
|
|
|
329 ev = event_index[i];
|
|
|
330 c = ev->data;
|
|
|
331 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
332 "select event: fd:%d wr:%d", c->fd, ev->write);
|
|
|
333 }
|
|
|
334
|
|
10
|
335 #if !(NGX_WIN32)
|
|
0
|
336 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
337 "max_fd: %d", max_fd);
|
|
|
338 #endif
|
|
|
339 }
|
|
|
340 #endif
|
|
|
341
|
|
|
342 if (timer == NGX_TIMER_INFINITE) {
|
|
|
343 tp = NULL;
|
|
|
344 expire = 0;
|
|
|
345
|
|
|
346 } else {
|
|
|
347 tv.tv_sec = timer / 1000;
|
|
|
348 tv.tv_usec = (timer % 1000) * 1000;
|
|
|
349 tp = &tv;
|
|
|
350 }
|
|
|
351
|
|
|
352 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
353 "select timer: %d", timer);
|
|
|
354
|
|
|
355 work_read_fd_set = master_read_fd_set;
|
|
|
356 work_write_fd_set = master_write_fd_set;
|
|
|
357
|
|
36
|
358 #if 1
|
|
0
|
359 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
36
|
360 /*
|
|
|
361 * (void *) disables "dereferencing type-punned
|
|
|
362 * pointer will break strict-aliasing rules
|
|
|
363 */
|
|
|
364 "select read fd_set: %08Xd",
|
|
|
365 *(int *) (void *) &work_read_fd_set);
|
|
|
366 #endif
|
|
0
|
367
|
|
10
|
368 #if (NGX_WIN32)
|
|
0
|
369 ready = select(0, &work_read_fd_set, &work_write_fd_set, NULL, tp);
|
|
|
370 #else
|
|
|
371 ready = select(max_fd + 1, &work_read_fd_set, &work_write_fd_set, NULL, tp);
|
|
|
372 #endif
|
|
|
373
|
|
|
374 if (ready == -1) {
|
|
|
375 err = ngx_socket_errno;
|
|
|
376 } else {
|
|
|
377 err = 0;
|
|
|
378 }
|
|
|
379
|
|
18
|
380 #if (NGX_HAVE_SELECT_CHANGE_TIMEOUT)
|
|
0
|
381
|
|
|
382 if (timer != NGX_TIMER_INFINITE) {
|
|
|
383 delta = timer - (tv.tv_sec * 1000 + tv.tv_usec / 1000);
|
|
|
384
|
|
|
385 /*
|
|
|
386 * learn the real time and update the cached time
|
|
|
387 * if the sum of the last deltas overcomes 1 second
|
|
|
388 */
|
|
|
389
|
|
|
390 deltas += delta;
|
|
|
391 if (deltas > 1000) {
|
|
|
392 ngx_gettimeofday(&tv);
|
|
|
393 ngx_time_update(tv.tv_sec);
|
|
|
394 deltas = tv.tv_usec / 1000;
|
|
|
395
|
|
|
396 ngx_elapsed_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000
|
|
|
397 + tv.tv_usec / 1000 - ngx_start_msec;
|
|
|
398 } else {
|
|
|
399 ngx_elapsed_msec += delta;
|
|
|
400 }
|
|
|
401
|
|
|
402 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
403 "select timer: %d, delta: %d", timer, (int) delta);
|
|
|
404
|
|
|
405 } else {
|
|
|
406 delta = 0;
|
|
|
407 ngx_gettimeofday(&tv);
|
|
|
408 ngx_time_update(tv.tv_sec);
|
|
|
409
|
|
|
410 ngx_elapsed_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000
|
|
|
411 + tv.tv_usec / 1000 - ngx_start_msec;
|
|
|
412
|
|
|
413 if (ready == 0) {
|
|
|
414 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
415 "select() returned no events without timeout");
|
|
|
416 ngx_accept_mutex_unlock();
|
|
|
417 return NGX_ERROR;
|
|
|
418 }
|
|
|
419 }
|
|
|
420
|
|
18
|
421 #else /* !(NGX_HAVE_SELECT_CHANGE_TIMEOUT) */
|
|
0
|
422
|
|
|
423 ngx_gettimeofday(&tv);
|
|
|
424 ngx_time_update(tv.tv_sec);
|
|
|
425
|
|
|
426 delta = ngx_elapsed_msec;
|
|
|
427 ngx_elapsed_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000
|
|
|
428 + tv.tv_usec / 1000 - ngx_start_msec;
|
|
|
429
|
|
|
430 if (timer != NGX_TIMER_INFINITE) {
|
|
|
431 delta = ngx_elapsed_msec - delta;
|
|
|
432
|
|
|
433 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
434 "select timer: %d, delta: %d", timer, (int) delta);
|
|
|
435
|
|
|
436 } else {
|
|
|
437 if (ready == 0) {
|
|
|
438 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
439 "select() returned no events without timeout");
|
|
|
440 ngx_accept_mutex_unlock();
|
|
|
441 return NGX_ERROR;
|
|
|
442 }
|
|
|
443 }
|
|
|
444
|
|
18
|
445 #endif /* NGX_HAVE_SELECT_CHANGE_TIMEOUT */
|
|
0
|
446
|
|
|
447 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
448 "select ready %d", ready);
|
|
|
449
|
|
|
450 if (err) {
|
|
10
|
451 #if (NGX_WIN32)
|
|
0
|
452 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, "select() failed");
|
|
|
453 #else
|
|
|
454 ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT,
|
|
|
455 cycle->log, err, "select() failed");
|
|
|
456 #endif
|
|
|
457 ngx_accept_mutex_unlock();
|
|
|
458 return NGX_ERROR;
|
|
|
459 }
|
|
|
460
|
|
|
461
|
|
|
462 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
|
|
|
463 ngx_accept_mutex_unlock();
|
|
|
464 return NGX_ERROR;
|
|
|
465 }
|
|
|
466
|
|
|
467 lock = 1;
|
|
|
468 nready = 0;
|
|
|
469
|
|
|
470 for (i = 0; i < nevents; i++) {
|
|
|
471 ev = event_index[i];
|
|
|
472 c = ev->data;
|
|
|
473 found = 0;
|
|
|
474
|
|
|
475 if (ev->write) {
|
|
|
476 if (FD_ISSET(c->fd, &work_write_fd_set)) {
|
|
|
477 found = 1;
|
|
|
478 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
479 "select write %d", c->fd);
|
|
|
480 }
|
|
|
481
|
|
|
482 } else {
|
|
|
483 if (FD_ISSET(c->fd, &work_read_fd_set)) {
|
|
|
484 found = 1;
|
|
|
485 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
|
486 "select read %d", c->fd);
|
|
|
487 }
|
|
|
488 }
|
|
|
489
|
|
|
490 if (found) {
|
|
|
491 ev->ready = 1;
|
|
|
492
|
|
|
493 if (ev->oneshot) {
|
|
|
494 if (ev->timer_set) {
|
|
|
495 ngx_del_timer(ev);
|
|
|
496 }
|
|
|
497
|
|
|
498 if (ev->write) {
|
|
|
499 ngx_select_del_event(ev, NGX_WRITE_EVENT, 0);
|
|
|
500 } else {
|
|
|
501 ngx_select_del_event(ev, NGX_READ_EVENT, 0);
|
|
|
502 }
|
|
|
503 }
|
|
|
504
|
|
|
505 if (ev->accept) {
|
|
|
506 ev->next = accept_events;
|
|
|
507 accept_events = ev;
|
|
|
508 } else {
|
|
|
509 ngx_post_event(ev);
|
|
|
510 }
|
|
|
511
|
|
|
512 nready++;
|
|
|
513
|
|
|
514 #if 0
|
|
|
515 ready_index[nready++] = ev;
|
|
|
516 #endif
|
|
|
517 }
|
|
|
518 }
|
|
|
519
|
|
|
520 #if 0
|
|
|
521 for (i = 0; i < nready; i++) {
|
|
|
522 ev = ready_index[i];
|
|
|
523 ready--;
|
|
|
524
|
|
|
525 if (!ev->active) {
|
|
|
526 continue;
|
|
|
527 }
|
|
|
528
|
|
|
529 ev->ready = 1;
|
|
|
530
|
|
|
531 if (ev->oneshot) {
|
|
|
532 if (ev->timer_set) {
|
|
|
533 ngx_del_timer(ev);
|
|
|
534 }
|
|
|
535
|
|
|
536 if (ev->write) {
|
|
|
537 ngx_select_del_event(ev, NGX_WRITE_EVENT, 0);
|
|
|
538 } else {
|
|
|
539 ngx_select_del_event(ev, NGX_READ_EVENT, 0);
|
|
|
540 }
|
|
|
541 }
|
|
|
542
|
|
|
543 ev->event_handler(ev);
|
|
|
544 }
|
|
|
545 #endif
|
|
|
546
|
|
|
547 ev = accept_events;
|
|
|
548
|
|
|
549 for ( ;; ) {
|
|
|
550
|
|
|
551 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
|
|
10
|
552 "accept event %p", ev);
|
|
0
|
553
|
|
|
554 if (ev == NULL) {
|
|
|
555 break;
|
|
|
556 }
|
|
|
557
|
|
|
558 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
|
559
|
|
|
560 ev->event_handler(ev);
|
|
|
561
|
|
|
562 if (ngx_accept_disabled > 0) {
|
|
|
563 lock = 0;
|
|
|
564 break;
|
|
|
565 }
|
|
|
566
|
|
|
567 ev = ev->next;
|
|
|
568
|
|
|
569 if (ev == NULL) {
|
|
|
570 lock = 0;
|
|
|
571 break;
|
|
|
572 }
|
|
|
573
|
|
|
574 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
|
|
|
575 ngx_accept_mutex_unlock();
|
|
|
576 return NGX_ERROR;
|
|
|
577 }
|
|
|
578 }
|
|
|
579
|
|
|
580 ngx_accept_mutex_unlock();
|
|
|
581 accept_events = NULL;
|
|
|
582
|
|
|
583 if (lock) {
|
|
|
584 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
|
585 }
|
|
|
586
|
|
|
587 if (ready != nready) {
|
|
|
588 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "select ready != events");
|
|
|
589 }
|
|
|
590
|
|
|
591 if (expire && delta) {
|
|
|
592 ngx_event_expire_timers((ngx_msec_t) delta);
|
|
|
593 }
|
|
|
594
|
|
|
595 if (!ngx_threaded) {
|
|
|
596 ngx_event_process_posted(cycle);
|
|
|
597 }
|
|
|
598
|
|
|
599 return NGX_OK;
|
|
|
600 }
|
|
|
601
|
|
|
602
|
|
50
|
603 static char *
|
|
|
604 ngx_select_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
0
|
605 {
|
|
|
606 ngx_event_conf_t *ecf;
|
|
|
607
|
|
|
608 ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
|
|
|
609
|
|
|
610 if (ecf->use != ngx_select_module.ctx_index) {
|
|
|
611 return NGX_CONF_OK;
|
|
|
612 }
|
|
|
613
|
|
|
614 /* disable warning: the default FD_SETSIZE is 1024U in FreeBSD 5.x */
|
|
|
615
|
|
10
|
616 #if !(NGX_WIN32)
|
|
0
|
617 if ((unsigned) ecf->connections > FD_SETSIZE) {
|
|
|
618 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
619 "the maximum number of files "
|
|
|
620 "supported by select() is " ngx_value(FD_SETSIZE));
|
|
|
621 return NGX_CONF_ERROR;
|
|
|
622 }
|
|
|
623 #endif
|
|
|
624
|
|
10
|
625 #if (NGX_THREADS) && !(NGX_WIN32)
|
|
0
|
626 ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
|
|
|
627 "select() is not supported in the threaded mode");
|
|
|
628 return NGX_CONF_ERROR;
|
|
|
629 #else
|
|
|
630 return NGX_CONF_OK;
|
|
|
631 #endif
|
|
|
632 }
|
