Mercurial > hg > nginx
annotate src/os/win32/ngx_process_cycle.c @ 6220:5e6142609e48
Core: idle connections now closed only once on exiting.
Iterating through all connections takes a lot of CPU time, especially
with large number of worker connections configured. As a result
nginx processes used to consume CPU time during graceful shutdown.
To mitigate this we now only do a full scan for idle connections when
shutdown signal is received.
Transitions of connections to idle ones are now expected to be
avoided if the ngx_exiting flag is set. The upstream keepalive module
was modified to follow this.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 11 Aug 2015 16:28:55 +0300 |
parents | b4cc553aafeb |
children | cf5e822cf470 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
461 | 11 #include <nginx.h> |
278
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13 |
2725 | 14 static void ngx_console_init(ngx_cycle_t *cycle); |
15 static int __stdcall ngx_console_handler(u_long type); | |
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16 static ngx_int_t ngx_create_signal_events(ngx_cycle_t *cycle); |
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17 static ngx_int_t ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t type); |
2725 | 18 static void ngx_reopen_worker_processes(ngx_cycle_t *cycle); |
19 static void ngx_quit_worker_processes(ngx_cycle_t *cycle, ngx_uint_t old); | |
20 static void ngx_terminate_worker_processes(ngx_cycle_t *cycle); | |
21 static ngx_uint_t ngx_reap_worker(ngx_cycle_t *cycle, HANDLE h); | |
22 static void ngx_master_process_exit(ngx_cycle_t *cycle); | |
23 static void ngx_worker_process_cycle(ngx_cycle_t *cycle, char *mevn); | |
24 static void ngx_worker_process_exit(ngx_cycle_t *cycle); | |
25 static ngx_thread_value_t __stdcall ngx_worker_thread(void *data); | |
26 static ngx_thread_value_t __stdcall ngx_cache_manager_thread(void *data); | |
27 static void ngx_cache_manager_process_handler(void); | |
3022 | 28 static ngx_thread_value_t __stdcall ngx_cache_loader_thread(void *data); |
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29 |
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30 |
2725 | 31 ngx_uint_t ngx_process; |
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32 ngx_uint_t ngx_worker; |
2725 | 33 ngx_pid_t ngx_pid; |
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34 |
2725 | 35 ngx_uint_t ngx_inherited; |
36 ngx_pid_t ngx_new_binary; | |
278
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37 |
2725 | 38 sig_atomic_t ngx_terminate; |
39 sig_atomic_t ngx_quit; | |
40 sig_atomic_t ngx_reopen; | |
41 sig_atomic_t ngx_reconfigure; | |
42 ngx_uint_t ngx_exiting; | |
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44 |
2725 | 45 HANDLE ngx_master_process_event; |
46 char ngx_master_process_event_name[NGX_PROCESS_SYNC_NAME]; | |
47 | |
48 static HANDLE ngx_stop_event; | |
49 static char ngx_stop_event_name[NGX_PROCESS_SYNC_NAME]; | |
50 static HANDLE ngx_quit_event; | |
51 static char ngx_quit_event_name[NGX_PROCESS_SYNC_NAME]; | |
52 static HANDLE ngx_reopen_event; | |
53 static char ngx_reopen_event_name[NGX_PROCESS_SYNC_NAME]; | |
54 static HANDLE ngx_reload_event; | |
55 static char ngx_reload_event_name[NGX_PROCESS_SYNC_NAME]; | |
56 | |
57 HANDLE ngx_cache_manager_mutex; | |
58 char ngx_cache_manager_mutex_name[NGX_PROCESS_SYNC_NAME]; | |
59 HANDLE ngx_cache_manager_event; | |
461 | 60 |
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61 |
509 | 62 void |
63 ngx_master_process_cycle(ngx_cycle_t *cycle) | |
278
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64 { |
2725 | 65 u_long nev, ev, timeout; |
66 ngx_err_t err; | |
67 ngx_int_t n; | |
68 ngx_msec_t timer; | |
69 ngx_uint_t live; | |
70 HANDLE events[MAXIMUM_WAIT_OBJECTS]; | |
71 | |
72 ngx_sprintf((u_char *) ngx_master_process_event_name, | |
73 "ngx_master_%s%Z", ngx_unique); | |
74 | |
75 if (ngx_process == NGX_PROCESS_WORKER) { | |
76 ngx_worker_process_cycle(cycle, ngx_master_process_event_name); | |
77 return; | |
78 } | |
79 | |
80 ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "master started"); | |
81 | |
82 ngx_console_init(cycle); | |
83 | |
84 SetEnvironmentVariable("ngx_unique", ngx_unique); | |
85 | |
86 ngx_master_process_event = CreateEvent(NULL, 1, 0, | |
87 ngx_master_process_event_name); | |
88 if (ngx_master_process_event == NULL) { | |
89 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
90 "CreateEvent(\"%s\") failed", | |
91 ngx_master_process_event_name); | |
92 exit(2); | |
93 } | |
94 | |
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95 if (ngx_create_signal_events(cycle) != NGX_OK) { |
2725 | 96 exit(2); |
97 } | |
98 | |
99 ngx_sprintf((u_char *) ngx_cache_manager_mutex_name, | |
100 "ngx_cache_manager_mutex_%s%Z", ngx_unique); | |
101 | |
102 ngx_cache_manager_mutex = CreateMutex(NULL, 0, | |
103 ngx_cache_manager_mutex_name); | |
104 if (ngx_cache_manager_mutex == NULL) { | |
105 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
106 "CreateMutex(\"%s\") failed", ngx_cache_manager_mutex_name); | |
107 exit(2); | |
108 } | |
109 | |
110 | |
111 events[0] = ngx_stop_event; | |
112 events[1] = ngx_quit_event; | |
113 events[2] = ngx_reopen_event; | |
114 events[3] = ngx_reload_event; | |
115 | |
116 ngx_close_listening_sockets(cycle); | |
117 | |
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118 if (ngx_start_worker_processes(cycle, NGX_PROCESS_RESPAWN) == 0) { |
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119 exit(2); |
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120 } |
2725 | 121 |
122 timer = 0; | |
123 timeout = INFINITE; | |
124 | |
125 for ( ;; ) { | |
126 | |
127 nev = 4; | |
128 for (n = 0; n < ngx_last_process; n++) { | |
129 if (ngx_processes[n].handle) { | |
130 events[nev++] = ngx_processes[n].handle; | |
131 } | |
132 } | |
133 | |
134 if (timer) { | |
135 timeout = timer > ngx_current_msec ? timer - ngx_current_msec : 0; | |
136 } | |
137 | |
138 ev = WaitForMultipleObjects(nev, events, 0, timeout); | |
139 | |
140 err = ngx_errno; | |
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141 ngx_time_update(); |
2725 | 142 |
143 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, | |
144 "master WaitForMultipleObjects: %ul", ev); | |
145 | |
146 if (ev == WAIT_OBJECT_0) { | |
147 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); | |
324
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148 |
2725 | 149 if (ResetEvent(ngx_stop_event) == 0) { |
150 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
151 "ResetEvent(\"%s\") failed", ngx_stop_event_name); | |
152 } | |
153 | |
154 if (timer == 0) { | |
155 timer = ngx_current_msec + 5000; | |
156 } | |
157 | |
158 ngx_terminate = 1; | |
159 ngx_quit_worker_processes(cycle, 0); | |
160 | |
161 continue; | |
162 } | |
163 | |
164 if (ev == WAIT_OBJECT_0 + 1) { | |
165 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "shutting down"); | |
166 | |
167 if (ResetEvent(ngx_quit_event) == 0) { | |
168 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
169 "ResetEvent(\"%s\") failed", ngx_quit_event_name); | |
170 } | |
171 | |
172 ngx_quit = 1; | |
173 ngx_quit_worker_processes(cycle, 0); | |
174 | |
175 continue; | |
176 } | |
177 | |
178 if (ev == WAIT_OBJECT_0 + 2) { | |
179 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); | |
180 | |
181 if (ResetEvent(ngx_reopen_event) == 0) { | |
182 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
183 "ResetEvent(\"%s\") failed", | |
184 ngx_reopen_event_name); | |
185 } | |
186 | |
187 ngx_reopen_files(cycle, -1); | |
188 ngx_reopen_worker_processes(cycle); | |
189 | |
190 continue; | |
191 } | |
192 | |
193 if (ev == WAIT_OBJECT_0 + 3) { | |
194 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reconfiguring"); | |
195 | |
196 if (ResetEvent(ngx_reload_event) == 0) { | |
197 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
198 "ResetEvent(\"%s\") failed", | |
199 ngx_reload_event_name); | |
200 } | |
201 | |
2823 | 202 cycle = ngx_init_cycle(cycle); |
203 if (cycle == NULL) { | |
204 cycle = (ngx_cycle_t *) ngx_cycle; | |
205 continue; | |
206 } | |
207 | |
208 ngx_cycle = cycle; | |
209 | |
2928 | 210 ngx_close_listening_sockets(cycle); |
211 | |
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212 if (ngx_start_worker_processes(cycle, NGX_PROCESS_JUST_RESPAWN)) { |
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213 ngx_quit_worker_processes(cycle, 1); |
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214 } |
2725 | 215 |
216 continue; | |
217 } | |
218 | |
219 if (ev > WAIT_OBJECT_0 + 3 && ev < WAIT_OBJECT_0 + nev) { | |
220 | |
221 ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "reap worker"); | |
222 | |
223 live = ngx_reap_worker(cycle, events[ev]); | |
224 | |
225 if (!live && (ngx_terminate || ngx_quit)) { | |
226 ngx_master_process_exit(cycle); | |
227 } | |
228 | |
229 continue; | |
230 } | |
231 | |
232 if (ev == WAIT_TIMEOUT) { | |
233 ngx_terminate_worker_processes(cycle); | |
234 | |
235 ngx_master_process_exit(cycle); | |
236 } | |
237 | |
238 if (ev == WAIT_FAILED) { | |
239 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, | |
240 "WaitForMultipleObjects() failed"); | |
241 | |
242 continue; | |
243 } | |
244 | |
245 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
246 "WaitForMultipleObjects() returned unexpected value %ul", ev); | |
247 } | |
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248 } |
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250 |
2725 | 251 static void |
252 ngx_console_init(ngx_cycle_t *cycle) | |
253 { | |
254 ngx_core_conf_t *ccf; | |
255 | |
256 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); | |
257 | |
258 if (ccf->daemon) { | |
259 if (FreeConsole() == 0) { | |
260 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
261 "FreeConsole() failed"); | |
262 } | |
263 | |
264 return; | |
265 } | |
266 | |
267 if (SetConsoleCtrlHandler(ngx_console_handler, 1) == 0) { | |
268 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
269 "SetConsoleCtrlHandler() failed"); | |
270 } | |
271 } | |
272 | |
273 | |
274 static int __stdcall | |
275 ngx_console_handler(u_long type) | |
276 { | |
277 char *msg; | |
278 | |
279 switch (type) { | |
280 | |
281 case CTRL_C_EVENT: | |
282 msg = "Ctrl-C pressed, exiting"; | |
283 break; | |
284 | |
285 case CTRL_BREAK_EVENT: | |
286 msg = "Ctrl-Break pressed, exiting"; | |
287 break; | |
288 | |
289 case CTRL_CLOSE_EVENT: | |
290 msg = "console closing, exiting"; | |
291 break; | |
292 | |
293 case CTRL_LOGOFF_EVENT: | |
294 msg = "user logs off, exiting"; | |
295 break; | |
296 | |
297 default: | |
298 return 0; | |
299 } | |
300 | |
301 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, msg); | |
302 | |
303 if (ngx_stop_event == NULL) { | |
304 return 1; | |
305 } | |
306 | |
307 if (SetEvent(ngx_stop_event) == 0) { | |
308 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
309 "SetEvent(\"%s\") failed", ngx_stop_event_name); | |
2627 | 310 } |
311 | |
2725 | 312 return 1; |
313 } | |
314 | |
315 | |
316 static ngx_int_t | |
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317 ngx_create_signal_events(ngx_cycle_t *cycle) |
2725 | 318 { |
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319 ngx_sprintf((u_char *) ngx_stop_event_name, |
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320 "Global\\ngx_stop_%s%Z", ngx_unique); |
2725 | 321 |
322 ngx_stop_event = CreateEvent(NULL, 1, 0, ngx_stop_event_name); | |
323 if (ngx_stop_event == NULL) { | |
324 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
325 "CreateEvent(\"%s\") failed", ngx_stop_event_name); | |
326 return NGX_ERROR; | |
327 } | |
328 | |
329 | |
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330 ngx_sprintf((u_char *) ngx_quit_event_name, |
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331 "Global\\ngx_quit_%s%Z", ngx_unique); |
2725 | 332 |
333 ngx_quit_event = CreateEvent(NULL, 1, 0, ngx_quit_event_name); | |
334 if (ngx_quit_event == NULL) { | |
335 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
336 "CreateEvent(\"%s\") failed", ngx_quit_event_name); | |
337 return NGX_ERROR; | |
338 } | |
339 | |
340 | |
341 ngx_sprintf((u_char *) ngx_reopen_event_name, | |
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342 "Global\\ngx_reopen_%s%Z", ngx_unique); |
2725 | 343 |
344 ngx_reopen_event = CreateEvent(NULL, 1, 0, ngx_reopen_event_name); | |
345 if (ngx_reopen_event == NULL) { | |
346 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
347 "CreateEvent(\"%s\") failed", ngx_reopen_event_name); | |
348 return NGX_ERROR; | |
349 } | |
350 | |
351 | |
352 ngx_sprintf((u_char *) ngx_reload_event_name, | |
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353 "Global\\ngx_reload_%s%Z", ngx_unique); |
2725 | 354 |
355 ngx_reload_event = CreateEvent(NULL, 1, 0, ngx_reload_event_name); | |
356 if (ngx_reload_event == NULL) { | |
357 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
358 "CreateEvent(\"%s\") failed", ngx_reload_event_name); | |
359 return NGX_ERROR; | |
360 } | |
361 | |
362 return NGX_OK; | |
363 } | |
364 | |
365 | |
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366 static ngx_int_t |
2725 | 367 ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t type) |
368 { | |
369 ngx_int_t n; | |
370 ngx_core_conf_t *ccf; | |
371 | |
372 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start worker processes"); | |
373 | |
374 ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); | |
375 | |
376 for (n = 0; n < ccf->worker_processes; n++) { | |
377 if (ngx_spawn_process(cycle, "worker", type) == NGX_INVALID_PID) { | |
2922
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*) exit if no workers could not be started
Igor Sysoev <igor@sysoev.ru>
parents:
2921
diff
changeset
|
378 break; |
2725 | 379 } |
380 } | |
2922
f0604d0b28a6
*) exit if no workers could not be started
Igor Sysoev <igor@sysoev.ru>
parents:
2921
diff
changeset
|
381 |
f0604d0b28a6
*) exit if no workers could not be started
Igor Sysoev <igor@sysoev.ru>
parents:
2921
diff
changeset
|
382 return n; |
2627 | 383 } |
384 | |
385 | |
2725 | 386 static void |
387 ngx_reopen_worker_processes(ngx_cycle_t *cycle) | |
388 { | |
389 ngx_int_t n; | |
390 | |
391 for (n = 0; n < ngx_last_process; n++) { | |
392 | |
393 if (ngx_processes[n].handle == NULL) { | |
394 continue; | |
395 } | |
396 | |
397 if (SetEvent(ngx_processes[n].reopen) == 0) { | |
398 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
399 "SetEvent(\"%s\") failed", | |
400 ngx_processes[n].reopen_event); | |
401 } | |
402 } | |
403 } | |
404 | |
405 | |
406 static void | |
407 ngx_quit_worker_processes(ngx_cycle_t *cycle, ngx_uint_t old) | |
2627 | 408 { |
2725 | 409 ngx_int_t n; |
410 | |
411 for (n = 0; n < ngx_last_process; n++) { | |
412 | |
413 ngx_log_debug5(NGX_LOG_DEBUG_CORE, cycle->log, 0, | |
2921 | 414 "process: %d %P %p e:%d j:%d", |
2725 | 415 n, |
416 ngx_processes[n].pid, | |
417 ngx_processes[n].handle, | |
418 ngx_processes[n].exiting, | |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2928
diff
changeset
|
419 ngx_processes[n].just_spawn); |
2725 | 420 |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2928
diff
changeset
|
421 if (old && ngx_processes[n].just_spawn) { |
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2928
diff
changeset
|
422 ngx_processes[n].just_spawn = 0; |
2725 | 423 continue; |
424 } | |
425 | |
426 if (ngx_processes[n].handle == NULL) { | |
427 continue; | |
428 } | |
429 | |
430 if (SetEvent(ngx_processes[n].quit) == 0) { | |
431 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
432 "SetEvent(\"%s\") failed", | |
433 ngx_processes[n].quit_event); | |
434 } | |
435 | |
436 ngx_processes[n].exiting = 1; | |
437 } | |
438 } | |
439 | |
440 | |
441 static void | |
442 ngx_terminate_worker_processes(ngx_cycle_t *cycle) | |
443 { | |
444 ngx_int_t n; | |
445 | |
446 for (n = 0; n < ngx_last_process; n++) { | |
447 | |
448 if (ngx_processes[n].handle == NULL) { | |
449 continue; | |
450 } | |
451 | |
452 if (TerminateProcess(ngx_processes[n].handle, 0) == 0) { | |
453 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
454 "TerminateProcess(\"%p\") failed", | |
455 ngx_processes[n].handle); | |
456 } | |
457 | |
458 ngx_processes[n].exiting = 1; | |
2627 | 459 |
2725 | 460 ngx_close_handle(ngx_processes[n].reopen); |
461 ngx_close_handle(ngx_processes[n].quit); | |
462 ngx_close_handle(ngx_processes[n].term); | |
463 ngx_close_handle(ngx_processes[n].handle); | |
464 } | |
465 } | |
466 | |
467 | |
468 static ngx_uint_t | |
469 ngx_reap_worker(ngx_cycle_t *cycle, HANDLE h) | |
470 { | |
471 u_long code; | |
472 ngx_int_t n; | |
473 | |
474 for (n = 0; n < ngx_last_process; n++) { | |
475 | |
476 if (ngx_processes[n].handle != h) { | |
477 continue; | |
478 } | |
479 | |
480 if (GetExitCodeProcess(h, &code) == 0) { | |
2908
234a8248812c
log GetExitCodeProcess()'s errno
Igor Sysoev <igor@sysoev.ru>
parents:
2823
diff
changeset
|
481 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
2725 | 482 "GetExitCodeProcess(%P) failed", |
483 ngx_processes[n].pid); | |
484 } | |
485 | |
486 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, | |
487 "%s process %P exited with code %Xul", | |
488 ngx_processes[n].name, ngx_processes[n].pid, code); | |
489 | |
490 ngx_close_handle(ngx_processes[n].reopen); | |
491 ngx_close_handle(ngx_processes[n].quit); | |
492 ngx_close_handle(ngx_processes[n].term); | |
493 ngx_close_handle(h); | |
2627 | 494 |
2725 | 495 ngx_processes[n].handle = NULL; |
496 ngx_processes[n].term = NULL; | |
497 ngx_processes[n].quit = NULL; | |
498 ngx_processes[n].reopen = NULL; | |
499 | |
500 if (!ngx_processes[n].exiting && !ngx_terminate && !ngx_quit) { | |
501 | |
502 if (ngx_spawn_process(cycle, ngx_processes[n].name, n) | |
503 == NGX_INVALID_PID) | |
504 { | |
505 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
4133
59b99f217c6d
Replaced "can not" with "cannot" and "could not" in a bunch of places.
Ruslan Ermilov <ru@nginx.com>
parents:
3751
diff
changeset
|
506 "could not respawn %s", ngx_processes[n].name); |
2725 | 507 |
508 if (n == ngx_last_process - 1) { | |
509 ngx_last_process--; | |
510 } | |
511 } | |
512 } | |
2627 | 513 |
2725 | 514 goto found; |
515 } | |
516 | |
517 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "unknown process handle %p", h); | |
518 | |
519 found: | |
520 | |
521 for (n = 0; n < ngx_last_process; n++) { | |
522 | |
523 ngx_log_debug5(NGX_LOG_DEBUG_CORE, cycle->log, 0, | |
2921 | 524 "process: %d %P %p e:%d j:%d", |
2725 | 525 n, |
526 ngx_processes[n].pid, | |
527 ngx_processes[n].handle, | |
528 ngx_processes[n].exiting, | |
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2928
diff
changeset
|
529 ngx_processes[n].just_spawn); |
2725 | 530 |
531 if (ngx_processes[n].handle) { | |
532 return 1; | |
533 } | |
2627 | 534 } |
535 | |
536 return 0; | |
537 } | |
538 | |
539 | |
540 static void | |
2725 | 541 ngx_master_process_exit(ngx_cycle_t *cycle) |
542 { | |
543 ngx_uint_t i; | |
544 | |
545 ngx_delete_pidfile(cycle); | |
546 | |
547 ngx_close_handle(ngx_cache_manager_mutex); | |
548 ngx_close_handle(ngx_stop_event); | |
549 ngx_close_handle(ngx_quit_event); | |
550 ngx_close_handle(ngx_reopen_event); | |
551 ngx_close_handle(ngx_reload_event); | |
552 ngx_close_handle(ngx_master_process_event); | |
553 | |
554 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exit"); | |
555 | |
556 for (i = 0; ngx_modules[i]; i++) { | |
557 if (ngx_modules[i]->exit_master) { | |
558 ngx_modules[i]->exit_master(cycle); | |
559 } | |
560 } | |
561 | |
562 ngx_destroy_pool(cycle->pool); | |
563 | |
564 exit(0); | |
565 } | |
566 | |
567 | |
568 static void | |
569 ngx_worker_process_cycle(ngx_cycle_t *cycle, char *mevn) | |
2627 | 570 { |
2725 | 571 char wtevn[NGX_PROCESS_SYNC_NAME]; |
572 char wqevn[NGX_PROCESS_SYNC_NAME]; | |
573 char wroevn[NGX_PROCESS_SYNC_NAME]; | |
574 HANDLE mev, events[3]; | |
575 u_long nev, ev; | |
576 ngx_err_t err; | |
3352
5c43621c580a
a cache manager thread handle was overwritten by a cache loader thread handle,
Igor Sysoev <igor@sysoev.ru>
parents:
3035
diff
changeset
|
577 ngx_tid_t wtid, cmtid, cltid; |
2725 | 578 ngx_log_t *log; |
579 | |
580 log = cycle->log; | |
581 | |
582 ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "worker started"); | |
583 | |
584 ngx_sprintf((u_char *) wtevn, "ngx_worker_term_%ul%Z", ngx_pid); | |
585 events[0] = CreateEvent(NULL, 1, 0, wtevn); | |
586 if (events[0] == NULL) { | |
587 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
588 "CreateEvent(\"%s\") failed", wtevn); | |
589 goto failed; | |
590 } | |
591 | |
592 ngx_sprintf((u_char *) wqevn, "ngx_worker_quit_%ul%Z", ngx_pid); | |
593 events[1] = CreateEvent(NULL, 1, 0, wqevn); | |
594 if (events[1] == NULL) { | |
595 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
596 "CreateEvent(\"%s\") failed", wqevn); | |
597 goto failed; | |
598 } | |
599 | |
600 ngx_sprintf((u_char *) wroevn, "ngx_worker_reopen_%ul%Z", ngx_pid); | |
601 events[2] = CreateEvent(NULL, 1, 0, wroevn); | |
602 if (events[2] == NULL) { | |
603 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
604 "CreateEvent(\"%s\") failed", wroevn); | |
605 goto failed; | |
606 } | |
607 | |
608 mev = OpenEvent(EVENT_MODIFY_STATE, 0, mevn); | |
609 if (mev == NULL) { | |
610 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
611 "OpenEvent(\"%s\") failed", mevn); | |
612 goto failed; | |
613 } | |
614 | |
615 if (SetEvent(mev) == 0) { | |
616 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
617 "SetEvent(\"%s\") failed", mevn); | |
618 goto failed; | |
619 } | |
620 | |
621 | |
622 ngx_sprintf((u_char *) ngx_cache_manager_mutex_name, | |
623 "ngx_cache_manager_mutex_%s%Z", ngx_unique); | |
624 | |
625 ngx_cache_manager_mutex = OpenMutex(SYNCHRONIZE, 0, | |
626 ngx_cache_manager_mutex_name); | |
627 if (ngx_cache_manager_mutex == NULL) { | |
628 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
629 "OpenMutex(\"%s\") failed", ngx_cache_manager_mutex_name); | |
630 goto failed; | |
631 } | |
632 | |
633 ngx_cache_manager_event = CreateEvent(NULL, 1, 0, NULL); | |
634 if (ngx_cache_manager_event == NULL) { | |
635 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
636 "CreateEvent(\"ngx_cache_manager_event\") failed"); | |
637 goto failed; | |
638 } | |
639 | |
640 | |
641 if (ngx_create_thread(&wtid, ngx_worker_thread, NULL, log) != 0) { | |
642 goto failed; | |
643 } | |
644 | |
645 if (ngx_create_thread(&cmtid, ngx_cache_manager_thread, NULL, log) != 0) { | |
646 goto failed; | |
647 } | |
648 | |
3352
5c43621c580a
a cache manager thread handle was overwritten by a cache loader thread handle,
Igor Sysoev <igor@sysoev.ru>
parents:
3035
diff
changeset
|
649 if (ngx_create_thread(&cltid, ngx_cache_loader_thread, NULL, log) != 0) { |
3022 | 650 goto failed; |
651 } | |
652 | |
2725 | 653 for ( ;; ) { |
654 ev = WaitForMultipleObjects(3, events, 0, INFINITE); | |
655 | |
656 err = ngx_errno; | |
3475
ab353d7dc182
*) introduce ngx_time_sigsafe_update() to update the error log time only
Igor Sysoev <igor@sysoev.ru>
parents:
3474
diff
changeset
|
657 ngx_time_update(); |
461 | 658 |
2725 | 659 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, |
660 "worker WaitForMultipleObjects: %ul", ev); | |
661 | |
662 if (ev == WAIT_OBJECT_0) { | |
663 ngx_terminate = 1; | |
664 ngx_log_error(NGX_LOG_NOTICE, log, 0, "exiting"); | |
665 | |
666 if (ResetEvent(events[0]) == 0) { | |
667 ngx_log_error(NGX_LOG_ALERT, log, 0, | |
668 "ResetEvent(\"%s\") failed", wtevn); | |
669 } | |
670 | |
671 break; | |
672 } | |
673 | |
674 if (ev == WAIT_OBJECT_0 + 1) { | |
675 ngx_quit = 1; | |
676 ngx_log_error(NGX_LOG_NOTICE, log, 0, "gracefully shutting down"); | |
677 break; | |
678 } | |
679 | |
680 if (ev == WAIT_OBJECT_0 + 2) { | |
681 ngx_reopen = 1; | |
682 ngx_log_error(NGX_LOG_NOTICE, log, 0, "reopening logs"); | |
683 | |
684 if (ResetEvent(events[2]) == 0) { | |
685 ngx_log_error(NGX_LOG_ALERT, log, 0, | |
686 "ResetEvent(\"%s\") failed", wroevn); | |
687 } | |
688 | |
689 continue; | |
690 } | |
691 | |
692 if (ev == WAIT_FAILED) { | |
693 ngx_log_error(NGX_LOG_ALERT, log, err, | |
694 "WaitForMultipleObjects() failed"); | |
695 | |
696 goto failed; | |
697 } | |
698 } | |
699 | |
700 /* wait threads */ | |
461 | 701 |
2725 | 702 if (SetEvent(ngx_cache_manager_event) == 0) { |
703 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, | |
704 "SetEvent(\"ngx_cache_manager_event\") failed"); | |
705 } | |
706 | |
707 events[1] = wtid; | |
708 events[2] = cmtid; | |
709 | |
710 nev = 3; | |
711 | |
712 for ( ;; ) { | |
713 ev = WaitForMultipleObjects(nev, events, 0, INFINITE); | |
714 | |
715 err = ngx_errno; | |
3475
ab353d7dc182
*) introduce ngx_time_sigsafe_update() to update the error log time only
Igor Sysoev <igor@sysoev.ru>
parents:
3474
diff
changeset
|
716 ngx_time_update(); |
2725 | 717 |
718 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, | |
719 "worker exit WaitForMultipleObjects: %ul", ev); | |
720 | |
721 if (ev == WAIT_OBJECT_0) { | |
722 break; | |
723 } | |
724 | |
725 if (ev == WAIT_OBJECT_0 + 1) { | |
726 if (nev == 2) { | |
727 break; | |
728 } | |
729 | |
730 events[1] = events[2]; | |
731 nev = 2; | |
732 continue; | |
733 } | |
734 | |
735 if (ev == WAIT_OBJECT_0 + 2) { | |
736 nev = 2; | |
737 continue; | |
738 } | |
739 | |
740 if (ev == WAIT_FAILED) { | |
741 ngx_log_error(NGX_LOG_ALERT, log, err, | |
742 "WaitForMultipleObjects() failed"); | |
743 break; | |
744 } | |
461 | 745 } |
746 | |
2725 | 747 ngx_close_handle(ngx_cache_manager_event); |
748 ngx_close_handle(events[0]); | |
749 ngx_close_handle(events[1]); | |
750 ngx_close_handle(events[2]); | |
751 ngx_close_handle(mev); | |
752 | |
753 ngx_worker_process_exit(cycle); | |
754 | |
755 failed: | |
756 | |
757 exit(2); | |
758 } | |
759 | |
760 | |
761 static ngx_thread_value_t __stdcall | |
762 ngx_worker_thread(void *data) | |
763 { | |
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6151
diff
changeset
|
764 ngx_int_t n; |
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6151
diff
changeset
|
765 ngx_cycle_t *cycle; |
2725 | 766 |
767 cycle = (ngx_cycle_t *) ngx_cycle; | |
768 | |
769 for (n = 0; ngx_modules[n]; n++) { | |
770 if (ngx_modules[n]->init_process) { | |
771 if (ngx_modules[n]->init_process(cycle) == NGX_ERROR) { | |
772 /* fatal */ | |
773 exit(2); | |
774 } | |
775 } | |
776 } | |
777 | |
778 while (!ngx_quit) { | |
779 | |
780 if (ngx_exiting) { | |
5896
3efdd7788bb0
Events: introduced cancelable timers.
Valentin Bartenev <vbart@nginx.com>
parents:
5633
diff
changeset
|
781 ngx_event_cancel_timers(); |
3efdd7788bb0
Events: introduced cancelable timers.
Valentin Bartenev <vbart@nginx.com>
parents:
5633
diff
changeset
|
782 |
2725 | 783 if (ngx_event_timer_rbtree.root |
784 == ngx_event_timer_rbtree.sentinel) | |
785 { | |
786 break; | |
787 } | |
788 } | |
789 | |
790 ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0, "worker cycle"); | |
791 | |
792 ngx_process_events_and_timers(cycle); | |
793 | |
794 if (ngx_terminate) { | |
795 return 0; | |
796 } | |
797 | |
798 if (ngx_quit) { | |
799 ngx_quit = 0; | |
800 | |
801 if (!ngx_exiting) { | |
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6151
diff
changeset
|
802 ngx_exiting = 1; |
2725 | 803 ngx_close_listening_sockets(cycle); |
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6151
diff
changeset
|
804 ngx_close_idle_connections(cycle); |
2725 | 805 } |
806 } | |
807 | |
808 if (ngx_reopen) { | |
809 ngx_reopen = 0; | |
810 ngx_reopen_files(cycle, -1); | |
811 } | |
812 } | |
813 | |
814 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); | |
815 | |
816 return 0; | |
817 } | |
818 | |
819 | |
820 static void | |
821 ngx_worker_process_exit(ngx_cycle_t *cycle) | |
822 { | |
823 ngx_uint_t i; | |
824 ngx_connection_t *c; | |
825 | |
826 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exit"); | |
827 | |
828 for (i = 0; ngx_modules[i]; i++) { | |
829 if (ngx_modules[i]->exit_process) { | |
830 ngx_modules[i]->exit_process(cycle); | |
831 } | |
832 } | |
833 | |
834 if (ngx_exiting) { | |
835 c = cycle->connections; | |
836 for (i = 0; i < cycle->connection_n; i++) { | |
5360
3d2d3e1cf427
Win32: MinGW GCC compatibility.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4870
diff
changeset
|
837 if (c[i].fd != (ngx_socket_t) -1 |
2725 | 838 && c[i].read |
839 && !c[i].read->accept | |
840 && !c[i].read->channel | |
841 && !c[i].read->resolver) | |
842 { | |
843 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
5601
e45fa57ef725
Added connection serial number in logging of left open sockets.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5452
diff
changeset
|
844 "*%uA open socket #%d left in connection %ui", |
e45fa57ef725
Added connection serial number in logging of left open sockets.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5452
diff
changeset
|
845 c[i].number, c[i].fd, i); |
2725 | 846 } |
847 } | |
461 | 848 } |
849 | |
2725 | 850 ngx_destroy_pool(cycle->pool); |
851 | |
852 exit(0); | |
853 } | |
854 | |
855 | |
856 static ngx_thread_value_t __stdcall | |
857 ngx_cache_manager_thread(void *data) | |
858 { | |
859 u_long ev; | |
860 HANDLE events[2]; | |
861 ngx_err_t err; | |
862 ngx_cycle_t *cycle; | |
863 | |
864 cycle = (ngx_cycle_t *) ngx_cycle; | |
865 | |
866 events[0] = ngx_cache_manager_event; | |
867 events[1] = ngx_cache_manager_mutex; | |
868 | |
869 for ( ;; ) { | |
870 ev = WaitForMultipleObjects(2, events, 0, INFINITE); | |
871 | |
872 err = ngx_errno; | |
3475
ab353d7dc182
*) introduce ngx_time_sigsafe_update() to update the error log time only
Igor Sysoev <igor@sysoev.ru>
parents:
3474
diff
changeset
|
873 ngx_time_update(); |
2725 | 874 |
875 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, | |
876 "cache manager WaitForMultipleObjects: %ul", ev); | |
877 | |
878 if (ev == WAIT_FAILED) { | |
879 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, | |
880 "WaitForMultipleObjects() failed"); | |
881 } | |
882 | |
883 /* | |
884 * ev == WAIT_OBJECT_0 | |
885 * ev == WAIT_OBJECT_0 + 1 | |
886 * ev == WAIT_ABANDONED_0 + 1 | |
887 */ | |
888 | |
5633
b74f1106f920
Win32: fixed cpu hog by cache manager on exit (ticket #514).
Maxim Dounin <mdounin@mdounin.ru>
parents:
5601
diff
changeset
|
889 if (ngx_terminate || ngx_quit || ngx_exiting) { |
2725 | 890 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); |
891 return 0; | |
892 } | |
893 | |
3021 | 894 break; |
2725 | 895 } |
896 | |
897 for ( ;; ) { | |
898 | |
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899 if (ngx_terminate || ngx_quit || ngx_exiting) { |
2725 | 900 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); |
901 break; | |
902 } | |
903 | |
904 ngx_cache_manager_process_handler(); | |
905 } | |
906 | |
907 if (ReleaseMutex(ngx_cache_manager_mutex) == 0) { | |
908 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
909 "ReleaseMutex() failed"); | |
910 } | |
911 | |
912 return 0; | |
913 } | |
914 | |
915 | |
916 static void | |
917 ngx_cache_manager_process_handler(void) | |
918 { | |
919 u_long ev; | |
920 time_t next, n; | |
921 ngx_uint_t i; | |
922 ngx_path_t **path; | |
923 | |
924 next = 60 * 60; | |
925 | |
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926 path = ngx_cycle->paths.elts; |
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927 for (i = 0; i < ngx_cycle->paths.nelts; i++) { |
2725 | 928 |
929 if (path[i]->manager) { | |
930 n = path[i]->manager(path[i]->data); | |
931 | |
932 next = (n <= next) ? n : next; | |
933 | |
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934 ngx_time_update(); |
2725 | 935 } |
936 } | |
937 | |
938 if (next == 0) { | |
939 next = 1; | |
940 } | |
941 | |
942 ev = WaitForSingleObject(ngx_cache_manager_event, (u_long) next * 1000); | |
943 | |
944 if (ev != WAIT_TIMEOUT) { | |
945 | |
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946 ngx_time_update(); |
2725 | 947 |
948 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, | |
949 "cache manager WaitForSingleObject: %ul", ev); | |
950 } | |
951 } | |
952 | |
953 | |
3022 | 954 static ngx_thread_value_t __stdcall |
955 ngx_cache_loader_thread(void *data) | |
956 { | |
957 ngx_uint_t i; | |
958 ngx_path_t **path; | |
959 ngx_cycle_t *cycle; | |
960 | |
961 ngx_msleep(60000); | |
962 | |
963 cycle = (ngx_cycle_t *) ngx_cycle; | |
964 | |
4870
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965 path = cycle->paths.elts; |
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966 for (i = 0; i < cycle->paths.nelts; i++) { |
3022 | 967 |
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parents:
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968 if (ngx_terminate || ngx_quit || ngx_exiting) { |
3022 | 969 break; |
970 } | |
971 | |
972 if (path[i]->loader) { | |
973 path[i]->loader(path[i]->data); | |
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974 ngx_time_update(); |
3022 | 975 } |
976 } | |
977 | |
978 return 0; | |
979 } | |
980 | |
981 | |
2725 | 982 void |
983 ngx_single_process_cycle(ngx_cycle_t *cycle) | |
984 { | |
985 ngx_tid_t tid; | |
986 | |
987 ngx_console_init(cycle); | |
988 | |
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989 if (ngx_create_signal_events(cycle) != NGX_OK) { |
461 | 990 exit(2); |
991 } | |
992 | |
2725 | 993 if (ngx_create_thread(&tid, ngx_worker_thread, NULL, cycle->log) != 0) { |
461 | 994 /* fatal */ |
995 exit(2); | |
996 } | |
997 | |
2725 | 998 /* STUB */ |
999 WaitForSingleObject(ngx_stop_event, INFINITE); | |
461 | 1000 } |
1001 | |
1002 | |
2725 | 1003 ngx_int_t |
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1004 ngx_os_signal_process(ngx_cycle_t *cycle, char *sig, ngx_int_t pid) |
461 | 1005 { |
2738
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1006 HANDLE ev; |
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1007 ngx_int_t rc; |
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1008 char evn[NGX_PROCESS_SYNC_NAME]; |
461 | 1009 |
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1010 ngx_sprintf((u_char *) evn, "Global\\ngx_%s_%ul%Z", sig, pid); |
2725 | 1011 |
1012 ev = OpenEvent(EVENT_MODIFY_STATE, 0, evn); | |
1013 if (ev == NULL) { | |
1014 ngx_log_error(NGX_LOG_ERR, cycle->log, ngx_errno, | |
1015 "OpenEvent(\"%s\") failed", evn); | |
2738
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1016 return 1; |
2725 | 1017 } |
461 | 1018 |
2725 | 1019 if (SetEvent(ev) == 0) { |
1020 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
1021 "SetEvent(\"%s\") failed", evn); | |
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1022 rc = 1; |
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1023 |
2725 | 1024 } else { |
1025 rc = 0; | |
1026 } | |
1027 | |
1028 ngx_close_handle(ev); | |
1029 | |
1030 return rc; | |
1031 } | |
461 | 1032 |
1033 | |
2725 | 1034 void |
1035 ngx_close_handle(HANDLE h) | |
1036 { | |
1037 if (CloseHandle(h) == 0) { | |
1038 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_errno, | |
1039 "CloseHandle(%p) failed", h); | |
461 | 1040 } |
1041 } |