1
2 /*
3 * Copyright (C) Igor Sysoev
4 * Copyright (C) Valentin V. Bartenev
5 * Copyright (C) NGINX, Inc.
6 */
7
8 #include <nxt_main.h>
9 #include <nxt_runtime.h>
10 #include <nxt_port.h>
11 #include <nxt_main_process.h>
12 #include <nxt_router.h>
13 #include <nxt_regex.h>
14
15
16 static nxt_int_t nxt_runtime_inherited_listen_sockets(nxt_task_t *task,
17 nxt_runtime_t *rt);
18 static nxt_int_t nxt_runtime_systemd_listen_sockets(nxt_task_t *task,
19 nxt_runtime_t *rt);
20 static nxt_int_t nxt_runtime_event_engines(nxt_task_t *task, nxt_runtime_t *rt);
21 static nxt_int_t nxt_runtime_thread_pools(nxt_thread_t *thr, nxt_runtime_t *rt);
22 static void nxt_runtime_start(nxt_task_t *task, void *obj, void *data);
23 static void nxt_runtime_initial_start(nxt_task_t *task, nxt_uint_t status);
24 static void nxt_runtime_close_idle_connections(nxt_event_engine_t *engine);
25 static void nxt_runtime_stop_all_processes(nxt_task_t *task, nxt_runtime_t *rt);
26 static void nxt_runtime_exit(nxt_task_t *task, void *obj, void *data);
27 static nxt_int_t nxt_runtime_event_engine_change(nxt_task_t *task,
28 nxt_runtime_t *rt);
29 static nxt_int_t nxt_runtime_conf_init(nxt_task_t *task, nxt_runtime_t *rt);
30 static nxt_int_t nxt_runtime_conf_read_cmd(nxt_task_t *task, nxt_runtime_t *rt);
31 static nxt_int_t nxt_runtime_hostname(nxt_task_t *task, nxt_runtime_t *rt);
32 static nxt_int_t nxt_runtime_log_files_init(nxt_runtime_t *rt);
33 static nxt_int_t nxt_runtime_log_files_create(nxt_task_t *task,
34 nxt_runtime_t *rt);
35 static nxt_int_t nxt_runtime_pid_file_create(nxt_task_t *task,
36 nxt_file_name_t *pid_file);
37 static void nxt_runtime_thread_pool_destroy(nxt_task_t *task, nxt_runtime_t *rt,
38 nxt_runtime_cont_t cont);
39 static void nxt_runtime_thread_pool_init(void);
40 static void nxt_runtime_thread_pool_exit(nxt_task_t *task, void *obj,
41 void *data);
42 static nxt_process_t *nxt_runtime_process_get(nxt_runtime_t *rt, nxt_pid_t pid);
43 static void nxt_runtime_port_add(nxt_task_t *task, nxt_port_t *port);
44
45
46 nxt_int_t
nxt_runtime_create(nxt_task_t * task)47 nxt_runtime_create(nxt_task_t *task)
48 {
49 nxt_mp_t *mp;
50 nxt_int_t ret;
51 nxt_array_t *listen_sockets;
52 nxt_runtime_t *rt;
53 nxt_app_lang_module_t *lang;
54
55 mp = nxt_mp_create(1024, 128, 256, 32);
56 if (nxt_slow_path(mp == NULL)) {
57 return NXT_ERROR;
58 }
59
60 rt = nxt_mp_zget(mp, sizeof(nxt_runtime_t));
61 if (nxt_slow_path(rt == NULL)) {
62 goto fail;
63 }
64
65 task->thread->runtime = rt;
66 rt->mem_pool = mp;
67
68 nxt_thread_mutex_create(&rt->processes_mutex);
69
70 rt->services = nxt_services_init(mp);
71 if (nxt_slow_path(rt->services == NULL)) {
72 goto fail;
73 }
74
75 rt->languages = nxt_array_create(mp, 1, sizeof(nxt_app_lang_module_t));
76 if (nxt_slow_path(rt->languages == NULL)) {
77 goto fail;
78 }
79
80 /* Should not fail. */
81 lang = nxt_array_add(rt->languages);
82 lang->type = NXT_APP_EXTERNAL;
83 lang->version = (u_char *) "";
84 lang->file = NULL;
85 lang->module = &nxt_external_module;
86
87 lang->mounts = nxt_array_create(mp, 1, sizeof(nxt_fs_mount_t));
88 if (nxt_slow_path(lang->mounts == NULL)) {
89 goto fail;
90 }
91
92 listen_sockets = nxt_array_create(mp, 1, sizeof(nxt_listen_socket_t));
93 if (nxt_slow_path(listen_sockets == NULL)) {
94 goto fail;
95 }
96
97 rt->listen_sockets = listen_sockets;
98
99 ret = nxt_runtime_inherited_listen_sockets(task, rt);
100 if (nxt_slow_path(ret != NXT_OK)) {
101 goto fail;
102 }
103
104 if (nxt_runtime_hostname(task, rt) != NXT_OK) {
105 goto fail;
106 }
107
108 if (nxt_slow_path(nxt_runtime_log_files_init(rt) != NXT_OK)) {
109 goto fail;
110 }
111
112 if (nxt_runtime_event_engines(task, rt) != NXT_OK) {
113 goto fail;
114 }
115
116 if (nxt_slow_path(nxt_runtime_thread_pools(task->thread, rt) != NXT_OK)) {
117 goto fail;
118 }
119
120 rt->start = nxt_runtime_initial_start;
121
122 if (nxt_runtime_conf_init(task, rt) != NXT_OK) {
123 goto fail;
124 }
125
126 if (nxt_port_rpc_init() != NXT_OK) {
127 goto fail;
128 }
129
130 if (nxt_slow_path(nxt_http_register_variables() != NXT_OK)) {
131 goto fail;
132 }
133
134 if (nxt_slow_path(nxt_var_index_init() != NXT_OK)) {
135 goto fail;
136 }
137
138 nxt_work_queue_add(&task->thread->engine->fast_work_queue,
139 nxt_runtime_start, task, rt, NULL);
140
141 return NXT_OK;
142
143 fail:
144
145 nxt_mp_destroy(mp);
146
147 return NXT_ERROR;
148 }
149
150
151 static nxt_int_t
nxt_runtime_inherited_listen_sockets(nxt_task_t * task,nxt_runtime_t * rt)152 nxt_runtime_inherited_listen_sockets(nxt_task_t *task, nxt_runtime_t *rt)
153 {
154 u_char *v, *p;
155 nxt_int_t type;
156 nxt_array_t *inherited_sockets;
157 nxt_socket_t s;
158 nxt_listen_socket_t *ls;
159
160 v = (u_char *) getenv("NGINX");
161
162 if (v == NULL) {
163 return nxt_runtime_systemd_listen_sockets(task, rt);
164 }
165
166 nxt_alert(task, "using inherited listen sockets: %s", v);
167
168 inherited_sockets = nxt_array_create(rt->mem_pool,
169 1, sizeof(nxt_listen_socket_t));
170 if (inherited_sockets == NULL) {
171 return NXT_ERROR;
172 }
173
174 rt->inherited_sockets = inherited_sockets;
175
176 for (p = v; *p != '\0'; p++) {
177
178 if (*p == ';') {
179 s = nxt_int_parse(v, p - v);
180
181 if (nxt_slow_path(s < 0)) {
182 nxt_alert(task, "invalid socket number \"%s\" "
183 "in NGINX environment variable, "
184 "ignoring the rest of the variable", v);
185 return NXT_ERROR;
186 }
187
188 v = p + 1;
189
190 ls = nxt_array_zero_add(inherited_sockets);
191 if (nxt_slow_path(ls == NULL)) {
192 return NXT_ERROR;
193 }
194
195 ls->socket = s;
196
197 ls->sockaddr = nxt_getsockname(task, rt->mem_pool, s);
198 if (nxt_slow_path(ls->sockaddr == NULL)) {
199 return NXT_ERROR;
200 }
201
202 type = nxt_socket_getsockopt(task, s, SOL_SOCKET, SO_TYPE);
203 if (nxt_slow_path(type == -1)) {
204 return NXT_ERROR;
205 }
206
207 ls->sockaddr->type = (uint16_t) type;
208 }
209 }
210
211 return NXT_OK;
212 }
213
214
215 static nxt_int_t
nxt_runtime_systemd_listen_sockets(nxt_task_t * task,nxt_runtime_t * rt)216 nxt_runtime_systemd_listen_sockets(nxt_task_t *task, nxt_runtime_t *rt)
217 {
218 u_char *nfd, *pid;
219 nxt_int_t n;
220 nxt_array_t *inherited_sockets;
221 nxt_socket_t s;
222 nxt_listen_socket_t *ls;
223
224 /*
225 * Number of listening sockets passed. The socket
226 * descriptors start from number 3 and are sequential.
227 */
228 nfd = (u_char *) getenv("LISTEN_FDS");
229 if (nfd == NULL) {
230 return NXT_OK;
231 }
232
233 /* The pid of the service process. */
234 pid = (u_char *) getenv("LISTEN_PID");
235 if (pid == NULL) {
236 return NXT_OK;
237 }
238
239 n = nxt_int_parse(nfd, nxt_strlen(nfd));
240 if (n < 0) {
241 return NXT_OK;
242 }
243
244 if (nxt_pid != nxt_int_parse(pid, nxt_strlen(pid))) {
245 return NXT_OK;
246 }
247
248 nxt_log(task, NXT_LOG_INFO, "using %i systemd listen sockets", n);
249
250 inherited_sockets = nxt_array_create(rt->mem_pool,
251 n, sizeof(nxt_listen_socket_t));
252 if (inherited_sockets == NULL) {
253 return NXT_ERROR;
254 }
255
256 rt->inherited_sockets = inherited_sockets;
257
258 for (s = 3; s < n; s++) {
259 ls = nxt_array_zero_add(inherited_sockets);
260 if (nxt_slow_path(ls == NULL)) {
261 return NXT_ERROR;
262 }
263
264 ls->socket = s;
265
266 ls->sockaddr = nxt_getsockname(task, rt->mem_pool, s);
267 if (nxt_slow_path(ls->sockaddr == NULL)) {
268 return NXT_ERROR;
269 }
270
271 ls->sockaddr->type = SOCK_STREAM;
272 }
273
274 return NXT_OK;
275 }
276
277
278 static nxt_int_t
nxt_runtime_event_engines(nxt_task_t * task,nxt_runtime_t * rt)279 nxt_runtime_event_engines(nxt_task_t *task, nxt_runtime_t *rt)
280 {
281 nxt_thread_t *thread;
282 nxt_event_engine_t *engine;
283 const nxt_event_interface_t *interface;
284
285 interface = nxt_service_get(rt->services, "engine", NULL);
286
287 if (nxt_slow_path(interface == NULL)) {
288 /* TODO: log */
289 return NXT_ERROR;
290 }
291
292 engine = nxt_event_engine_create(task, interface,
293 nxt_main_process_signals, 0, 0);
294
295 if (nxt_slow_path(engine == NULL)) {
296 return NXT_ERROR;
297 }
298
299 thread = task->thread;
300 thread->engine = engine;
301 #if 0
302 thread->fiber = &engine->fibers->fiber;
303 #endif
304
305 engine->id = rt->last_engine_id++;
306 engine->mem_pool = nxt_mp_create(1024, 128, 256, 32);
307
308 nxt_queue_init(&rt->engines);
309 nxt_queue_insert_tail(&rt->engines, &engine->link);
310
311 return NXT_OK;
312 }
313
314
315 static nxt_int_t
nxt_runtime_thread_pools(nxt_thread_t * thr,nxt_runtime_t * rt)316 nxt_runtime_thread_pools(nxt_thread_t *thr, nxt_runtime_t *rt)
317 {
318 nxt_int_t ret;
319 nxt_array_t *thread_pools;
320
321 thread_pools = nxt_array_create(rt->mem_pool, 1,
322 sizeof(nxt_thread_pool_t *));
323
324 if (nxt_slow_path(thread_pools == NULL)) {
325 return NXT_ERROR;
326 }
327
328 rt->thread_pools = thread_pools;
329 ret = nxt_runtime_thread_pool_create(thr, rt, 2, 60000 * 1000000LL);
330
331 if (nxt_slow_path(ret != NXT_OK)) {
332 return NXT_ERROR;
333 }
334
335 return NXT_OK;
336 }
337
338
339 static void
nxt_runtime_start(nxt_task_t * task,void * obj,void * data)340 nxt_runtime_start(nxt_task_t *task, void *obj, void *data)
341 {
342 nxt_runtime_t *rt;
343
344 rt = obj;
345
346 nxt_debug(task, "rt conf done");
347
348 task->thread->log->ctx_handler = NULL;
349 task->thread->log->ctx = NULL;
350
351 if (nxt_runtime_log_files_create(task, rt) != NXT_OK) {
352 goto fail;
353 }
354
355 if (nxt_runtime_event_engine_change(task, rt) != NXT_OK) {
356 goto fail;
357 }
358
359 /*
360 * Thread pools should be destroyed before starting worker
361 * processes, because thread pool semaphores will stick in
362 * locked state in new processes after fork().
363 */
364 nxt_runtime_thread_pool_destroy(task, rt, rt->start);
365
366 return;
367
368 fail:
369
370 nxt_runtime_quit(task, 1);
371 }
372
373
374 static void
nxt_runtime_initial_start(nxt_task_t * task,nxt_uint_t status)375 nxt_runtime_initial_start(nxt_task_t *task, nxt_uint_t status)
376 {
377 nxt_int_t ret;
378 nxt_thread_t *thr;
379 nxt_runtime_t *rt;
380 const nxt_event_interface_t *interface;
381
382 thr = task->thread;
383 rt = thr->runtime;
384
385 if (rt->inherited_sockets == NULL && rt->daemon) {
386
387 if (nxt_process_daemon(task) != NXT_OK) {
388 goto fail;
389 }
390
391 /*
392 * An event engine should be updated after fork()
393 * even if an event facility was not changed because:
394 * 1) inherited kqueue descriptor is invalid,
395 * 2) the signal thread is not inherited.
396 */
397 interface = nxt_service_get(rt->services, "engine", rt->engine);
398 if (interface == NULL) {
399 goto fail;
400 }
401
402 ret = nxt_event_engine_change(task->thread->engine, interface,
403 rt->batch);
404 if (ret != NXT_OK) {
405 goto fail;
406 }
407 }
408
409 ret = nxt_runtime_pid_file_create(task, rt->pid_file);
410 if (ret != NXT_OK) {
411 goto fail;
412 }
413
414 if (nxt_runtime_event_engine_change(task, rt) != NXT_OK) {
415 goto fail;
416 }
417
418 thr->engine->max_connections = rt->engine_connections;
419
420 if (nxt_main_process_start(thr, task, rt) != NXT_ERROR) {
421 return;
422 }
423
424 fail:
425
426 nxt_runtime_quit(task, 1);
427 }
428
429
430 void
nxt_runtime_quit(nxt_task_t * task,nxt_uint_t status)431 nxt_runtime_quit(nxt_task_t *task, nxt_uint_t status)
432 {
433 nxt_bool_t done;
434 nxt_runtime_t *rt;
435 nxt_event_engine_t *engine;
436
437 rt = task->thread->runtime;
438 rt->status |= status;
439 engine = task->thread->engine;
440
441 nxt_debug(task, "exiting");
442
443 done = 1;
444
445 if (!engine->shutdown) {
446 engine->shutdown = 1;
447
448 if (!nxt_array_is_empty(rt->thread_pools)) {
449 nxt_runtime_thread_pool_destroy(task, rt, nxt_runtime_quit);
450 done = 0;
451 }
452
453 if (rt->type == NXT_PROCESS_MAIN) {
454 nxt_runtime_stop_all_processes(task, rt);
455 done = 0;
456 }
457 }
458
459 nxt_runtime_close_idle_connections(engine);
460
461 if (done) {
462 nxt_work_queue_add(&engine->fast_work_queue, nxt_runtime_exit,
463 task, rt, engine);
464 }
465 }
466
467
468 static void
nxt_runtime_close_idle_connections(nxt_event_engine_t * engine)469 nxt_runtime_close_idle_connections(nxt_event_engine_t *engine)
470 {
471 nxt_conn_t *c;
472 nxt_queue_t *idle;
473 nxt_queue_link_t *link, *next;
474
475 nxt_debug(&engine->task, "close idle connections");
476
477 idle = &engine->idle_connections;
478
479 for (link = nxt_queue_first(idle);
480 link != nxt_queue_tail(idle);
481 link = next)
482 {
483 next = nxt_queue_next(link);
484 c = nxt_queue_link_data(link, nxt_conn_t, link);
485
486 if (!c->socket.read_ready) {
487 nxt_queue_remove(link);
488 nxt_conn_close(engine, c);
489 }
490 }
491 }
492
493
494 void
nxt_runtime_stop_app_processes(nxt_task_t * task,nxt_runtime_t * rt)495 nxt_runtime_stop_app_processes(nxt_task_t *task, nxt_runtime_t *rt)
496 {
497 nxt_port_t *port;
498 nxt_process_t *process;
499 nxt_process_init_t *init;
500
501 nxt_runtime_process_each(rt, process) {
502
503 init = nxt_process_init(process);
504
505 if (init->type == NXT_PROCESS_APP
506 || init->type == NXT_PROCESS_PROTOTYPE)
507 {
508
509 nxt_process_port_each(process, port) {
510
511 (void) nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1,
512 0, 0, NULL);
513
514 } nxt_process_port_loop;
515 }
516
517 } nxt_runtime_process_loop;
518 }
519
520
521 static void
nxt_runtime_stop_all_processes(nxt_task_t * task,nxt_runtime_t * rt)522 nxt_runtime_stop_all_processes(nxt_task_t *task, nxt_runtime_t *rt)
523 {
524 nxt_port_t *port;
525 nxt_process_t *process;
526
527 nxt_runtime_process_each(rt, process) {
528
529 nxt_process_port_each(process, port) {
530
531 nxt_debug(task, "%d sending quit to %PI", rt->type, port->pid);
532
533 (void) nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 0,
534 0, NULL);
535
536 } nxt_process_port_loop;
537
538 } nxt_runtime_process_loop;
539 }
540
541
542 static void
nxt_runtime_exit(nxt_task_t * task,void * obj,void * data)543 nxt_runtime_exit(nxt_task_t *task, void *obj, void *data)
544 {
545 int status, engine_count;
546 nxt_runtime_t *rt;
547 nxt_process_t *process;
548 nxt_event_engine_t *engine;
549
550 rt = obj;
551 engine = data;
552
553 nxt_debug(task, "thread pools: %d", rt->thread_pools->nelts);
554
555 if (!nxt_array_is_empty(rt->thread_pools)) {
556 return;
557 }
558
559 if (rt->type == NXT_PROCESS_MAIN) {
560 if (rt->pid_file != NULL) {
561 nxt_file_delete(rt->pid_file);
562 }
563
564 #if (NXT_HAVE_UNIX_DOMAIN)
565 {
566 nxt_sockaddr_t *sa;
567 nxt_file_name_t *name;
568
569 sa = rt->controller_listen;
570
571 if (sa->u.sockaddr.sa_family == AF_UNIX) {
572 name = (nxt_file_name_t *) sa->u.sockaddr_un.sun_path;
573 (void) nxt_file_delete(name);
574 }
575 }
576 #endif
577 }
578
579 if (!engine->event.signal_support) {
580 nxt_event_engine_signals_stop(engine);
581 }
582
583 nxt_runtime_process_each(rt, process) {
584
585 nxt_runtime_process_remove(rt, process);
586 nxt_process_close_ports(task, process);
587
588 } nxt_runtime_process_loop;
589
590 status = rt->status;
591
592 engine_count = 0;
593
594 nxt_queue_each(engine, &rt->engines, nxt_event_engine_t, link) {
595
596 engine_count++;
597
598 } nxt_queue_loop;
599
600 if (engine_count <= 1) {
601 if (rt->port_by_type[rt->type] != NULL) {
602 nxt_port_use(task, rt->port_by_type[rt->type], -1);
603 }
604
605 nxt_thread_mutex_destroy(&rt->processes_mutex);
606
607 nxt_mp_destroy(rt->mem_pool);
608 }
609
610 nxt_debug(task, "exit: %d", status);
611
612 exit(status);
613 nxt_unreachable();
614 }
615
616
617 static nxt_int_t
nxt_runtime_event_engine_change(nxt_task_t * task,nxt_runtime_t * rt)618 nxt_runtime_event_engine_change(nxt_task_t *task, nxt_runtime_t *rt)
619 {
620 nxt_event_engine_t *engine;
621 const nxt_event_interface_t *interface;
622
623 engine = task->thread->engine;
624
625 if (engine->batch == rt->batch
626 && nxt_strcmp(engine->event.name, rt->engine) == 0)
627 {
628 return NXT_OK;
629 }
630
631 interface = nxt_service_get(rt->services, "engine", rt->engine);
632
633 if (interface != NULL) {
634 return nxt_event_engine_change(engine, interface, rt->batch);
635 }
636
637 return NXT_ERROR;
638 }
639
640
641 void
nxt_runtime_event_engine_free(nxt_runtime_t * rt)642 nxt_runtime_event_engine_free(nxt_runtime_t *rt)
643 {
644 nxt_queue_link_t *link;
645 nxt_event_engine_t *engine;
646
647 link = nxt_queue_first(&rt->engines);
648 nxt_queue_remove(link);
649
650 engine = nxt_queue_link_data(link, nxt_event_engine_t, link);
651 nxt_event_engine_free(engine);
652 }
653
654
655 nxt_int_t
nxt_runtime_thread_pool_create(nxt_thread_t * thr,nxt_runtime_t * rt,nxt_uint_t max_threads,nxt_nsec_t timeout)656 nxt_runtime_thread_pool_create(nxt_thread_t *thr, nxt_runtime_t *rt,
657 nxt_uint_t max_threads, nxt_nsec_t timeout)
658 {
659 nxt_thread_pool_t *thread_pool, **tp;
660
661 tp = nxt_array_add(rt->thread_pools);
662 if (tp == NULL) {
663 return NXT_ERROR;
664 }
665
666 thread_pool = nxt_thread_pool_create(max_threads, timeout,
667 nxt_runtime_thread_pool_init,
668 thr->engine,
669 nxt_runtime_thread_pool_exit);
670
671 if (nxt_fast_path(thread_pool != NULL)) {
672 *tp = thread_pool;
673 }
674
675 return NXT_OK;
676 }
677
678
679 static void
nxt_runtime_thread_pool_destroy(nxt_task_t * task,nxt_runtime_t * rt,nxt_runtime_cont_t cont)680 nxt_runtime_thread_pool_destroy(nxt_task_t *task, nxt_runtime_t *rt,
681 nxt_runtime_cont_t cont)
682 {
683 nxt_uint_t n;
684 nxt_thread_pool_t **tp;
685
686 rt->continuation = cont;
687
688 n = rt->thread_pools->nelts;
689
690 if (n == 0) {
691 cont(task, 0);
692 return;
693 }
694
695 tp = rt->thread_pools->elts;
696
697 do {
698 nxt_thread_pool_destroy(*tp);
699
700 tp++;
701 n--;
702 } while (n != 0);
703 }
704
705
706 static void
nxt_runtime_thread_pool_init(void)707 nxt_runtime_thread_pool_init(void)
708 {
709 }
710
711
712 static void
nxt_runtime_thread_pool_exit(nxt_task_t * task,void * obj,void * data)713 nxt_runtime_thread_pool_exit(nxt_task_t *task, void *obj, void *data)
714 {
715 nxt_uint_t i, n;
716 nxt_runtime_t *rt;
717 nxt_thread_pool_t *tp, **thread_pools;
718 nxt_thread_handle_t handle;
719
720 tp = obj;
721
722 if (data != NULL) {
723 handle = (nxt_thread_handle_t) (uintptr_t) data;
724 nxt_thread_wait(handle);
725 }
726
727 rt = task->thread->runtime;
728
729 thread_pools = rt->thread_pools->elts;
730 n = rt->thread_pools->nelts;
731
732 nxt_debug(task, "thread pools: %ui", n);
733
734 for (i = 0; i < n; i++) {
735
736 if (tp == thread_pools[i]) {
737 nxt_array_remove(rt->thread_pools, &thread_pools[i]);
738
739 nxt_free(tp);
740
741 if (n == 1) {
742 /* The last thread pool. */
743 rt->continuation(task, 0);
744 }
745
746 return;
747 }
748 }
749 }
750
751
752 static nxt_int_t
nxt_runtime_conf_init(nxt_task_t * task,nxt_runtime_t * rt)753 nxt_runtime_conf_init(nxt_task_t *task, nxt_runtime_t *rt)
754 {
755 nxt_int_t ret;
756 nxt_str_t control;
757 nxt_uint_t n;
758 nxt_file_t *file;
759 const char *slash;
760 nxt_sockaddr_t *sa;
761 nxt_file_name_str_t file_name;
762 const nxt_event_interface_t *interface;
763
764 rt->daemon = 1;
765 rt->engine_connections = 256;
766 rt->auxiliary_threads = 2;
767 rt->user_cred.user = NXT_USER;
768 rt->group = NXT_GROUP;
769 rt->pid = NXT_PID;
770 rt->log = NXT_LOG;
771 rt->modules = NXT_MODULES;
772 rt->state = NXT_STATE;
773 rt->control = NXT_CONTROL_SOCK;
774 rt->tmp = NXT_TMP;
775
776 nxt_memzero(&rt->capabilities, sizeof(nxt_capabilities_t));
777
778 if (nxt_runtime_conf_read_cmd(task, rt) != NXT_OK) {
779 return NXT_ERROR;
780 }
781
782 if (nxt_capability_set(task, &rt->capabilities) != NXT_OK) {
783 return NXT_ERROR;
784 }
785
786 if (rt->capabilities.setid) {
787 ret = nxt_credential_get(task, rt->mem_pool, &rt->user_cred,
788 rt->group);
789
790 if (nxt_slow_path(ret != NXT_OK)) {
791 return NXT_ERROR;
792 }
793
794 } else {
795 nxt_log(task, NXT_LOG_WARN, "Unit is running unprivileged, then it "
796 "cannot use arbitrary user and group.");
797 }
798
799 /* An engine's parameters. */
800
801 interface = nxt_service_get(rt->services, "engine", rt->engine);
802 if (interface == NULL) {
803 return NXT_ERROR;
804 }
805
806 rt->engine = interface->name;
807
808 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%Z", rt->pid);
809 if (nxt_slow_path(ret != NXT_OK)) {
810 return NXT_ERROR;
811 }
812
813 rt->pid_file = file_name.start;
814
815 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%Z", rt->log);
816 if (nxt_slow_path(ret != NXT_OK)) {
817 return NXT_ERROR;
818 }
819
820 file = nxt_list_first(rt->log_files);
821 file->name = file_name.start;
822
823 slash = "";
824 n = nxt_strlen(rt->modules);
825
826 if (n > 1 && rt->modules[n - 1] != '/') {
827 slash = "/";
828 }
829
830 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%s*.unit.so%Z",
831 rt->modules, slash);
832 if (nxt_slow_path(ret != NXT_OK)) {
833 return NXT_ERROR;
834 }
835
836 rt->modules = (char *) file_name.start;
837
838 slash = "";
839 n = nxt_strlen(rt->state);
840
841 if (n > 1 && rt->state[n - 1] != '/') {
842 slash = "/";
843 }
844
845 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%sversion%Z",
846 rt->state, slash);
847 if (nxt_slow_path(ret != NXT_OK)) {
848 return NXT_ERROR;
849 }
850
851 rt->ver = (char *) file_name.start;
852
853 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s.tmp%Z", rt->ver);
854 if (nxt_slow_path(ret != NXT_OK)) {
855 return NXT_ERROR;
856 }
857
858 rt->ver_tmp = (char *) file_name.start;
859
860 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%sconf.json%Z",
861 rt->state, slash);
862 if (nxt_slow_path(ret != NXT_OK)) {
863 return NXT_ERROR;
864 }
865
866 rt->conf = (char *) file_name.start;
867
868 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s.tmp%Z", rt->conf);
869 if (nxt_slow_path(ret != NXT_OK)) {
870 return NXT_ERROR;
871 }
872
873 rt->conf_tmp = (char *) file_name.start;
874
875 ret = nxt_file_name_create(rt->mem_pool, &file_name, "%s%scerts/%Z",
876 rt->state, slash);
877 if (nxt_slow_path(ret != NXT_OK)) {
878 return NXT_ERROR;
879 }
880
881 ret = mkdir((char *) file_name.start, S_IRWXU);
882
883 if (nxt_fast_path(ret == 0 || nxt_errno == EEXIST)) {
884 rt->certs.length = file_name.len;
885 rt->certs.start = file_name.start;
886
887 } else {
888 nxt_alert(task, "Unable to create certificates storage directory: "
889 "mkdir(%s) failed %E", file_name.start, nxt_errno);
890 }
891
892 control.length = nxt_strlen(rt->control);
893 control.start = (u_char *) rt->control;
894
895 sa = nxt_sockaddr_parse(rt->mem_pool, &control);
896 if (nxt_slow_path(sa == NULL)) {
897 return NXT_ERROR;
898 }
899
900 sa->type = SOCK_STREAM;
901
902 rt->controller_listen = sa;
903
904 if (nxt_runtime_controller_socket(task, rt) != NXT_OK) {
905 return NXT_ERROR;
906 }
907
908 return NXT_OK;
909 }
910
911
912 static nxt_int_t
nxt_runtime_conf_read_cmd(nxt_task_t * task,nxt_runtime_t * rt)913 nxt_runtime_conf_read_cmd(nxt_task_t *task, nxt_runtime_t *rt)
914 {
915 char *p, **argv;
916 u_char *end;
917 u_char buf[1024];
918
919 static const char version[] =
920 "unit version: " NXT_VERSION "\n"
921 "configured as ./configure" NXT_CONFIGURE_OPTIONS "\n";
922
923 static const char no_control[] =
924 "option \"--control\" requires socket address\n";
925 static const char no_user[] = "option \"--user\" requires username\n";
926 static const char no_group[] = "option \"--group\" requires group name\n";
927 static const char no_pid[] = "option \"--pid\" requires filename\n";
928 static const char no_log[] = "option \"--log\" requires filename\n";
929 static const char no_modules[] =
930 "option \"--modules\" requires directory\n";
931 static const char no_state[] = "option \"--state\" requires directory\n";
932 static const char no_tmp[] = "option \"--tmp\" requires directory\n";
933
934 static const char help[] =
935 "\n"
936 "unit options:\n"
937 "\n"
938 " --version print unit version and configure options\n"
939 "\n"
940 " --no-daemon run unit in non-daemon mode\n"
941 "\n"
942 " --control ADDRESS set address of control API socket\n"
943 " default: \"" NXT_CONTROL_SOCK "\"\n"
944 "\n"
945 " --pid FILE set pid filename\n"
946 " default: \"" NXT_PID "\"\n"
947 "\n"
948 " --log FILE set log filename\n"
949 " default: \"" NXT_LOG "\"\n"
950 "\n"
951 " --modules DIRECTORY set modules directory name\n"
952 " default: \"" NXT_MODULES "\"\n"
953 "\n"
954 " --state DIRECTORY set state directory name\n"
955 " default: \"" NXT_STATE "\"\n"
956 "\n"
957 " --tmp DIRECTORY set tmp directory name\n"
958 " default: \"" NXT_TMP "\"\n"
959 "\n"
960 " --user USER set non-privileged processes to run"
961 " as specified user\n"
962 " default: \"" NXT_USER "\"\n"
963 "\n"
964 " --group GROUP set non-privileged processes to run"
965 " as specified group\n"
966 " default: ";
967
968 static const char group[] = "\"" NXT_GROUP "\"\n\n";
969 static const char primary[] = "user's primary group\n\n";
970
971 argv = &nxt_process_argv[1];
972
973 while (*argv != NULL) {
974 p = *argv++;
975
976 if (nxt_strcmp(p, "--control") == 0) {
977 if (*argv == NULL) {
978 write(STDERR_FILENO, no_control, nxt_length(no_control));
979 return NXT_ERROR;
980 }
981
982 p = *argv++;
983
984 rt->control = p;
985
986 continue;
987 }
988
989 if (nxt_strcmp(p, "--user") == 0) {
990 if (*argv == NULL) {
991 write(STDERR_FILENO, no_user, nxt_length(no_user));
992 return NXT_ERROR;
993 }
994
995 p = *argv++;
996
997 rt->user_cred.user = p;
998
999 continue;
1000 }
1001
1002 if (nxt_strcmp(p, "--group") == 0) {
1003 if (*argv == NULL) {
1004 write(STDERR_FILENO, no_group, nxt_length(no_group));
1005 return NXT_ERROR;
1006 }
1007
1008 p = *argv++;
1009
1010 rt->group = p;
1011
1012 continue;
1013 }
1014
1015 if (nxt_strcmp(p, "--pid") == 0) {
1016 if (*argv == NULL) {
1017 write(STDERR_FILENO, no_pid, nxt_length(no_pid));
1018 return NXT_ERROR;
1019 }
1020
1021 p = *argv++;
1022
1023 rt->pid = p;
1024
1025 continue;
1026 }
1027
1028 if (nxt_strcmp(p, "--log") == 0) {
1029 if (*argv == NULL) {
1030 write(STDERR_FILENO, no_log, nxt_length(no_log));
1031 return NXT_ERROR;
1032 }
1033
1034 p = *argv++;
1035
1036 rt->log = p;
1037
1038 continue;
1039 }
1040
1041 if (nxt_strcmp(p, "--modules") == 0) {
1042 if (*argv == NULL) {
1043 write(STDERR_FILENO, no_modules, nxt_length(no_modules));
1044 return NXT_ERROR;
1045 }
1046
1047 p = *argv++;
1048
1049 rt->modules = p;
1050
1051 continue;
1052 }
1053
1054 if (nxt_strcmp(p, "--state") == 0) {
1055 if (*argv == NULL) {
1056 write(STDERR_FILENO, no_state, nxt_length(no_state));
1057 return NXT_ERROR;
1058 }
1059
1060 p = *argv++;
1061
1062 rt->state = p;
1063
1064 continue;
1065 }
1066
1067 if (nxt_strcmp(p, "--tmp") == 0) {
1068 if (*argv == NULL) {
1069 write(STDERR_FILENO, no_tmp, nxt_length(no_tmp));
1070 return NXT_ERROR;
1071 }
1072
1073 p = *argv++;
1074
1075 rt->tmp = p;
1076
1077 continue;
1078 }
1079
1080 if (nxt_strcmp(p, "--no-daemon") == 0) {
1081 rt->daemon = 0;
1082 continue;
1083 }
1084
1085 if (nxt_strcmp(p, "--version") == 0) {
1086 write(STDERR_FILENO, version, nxt_length(version));
1087 exit(0);
1088 }
1089
1090 if (nxt_strcmp(p, "--help") == 0 || nxt_strcmp(p, "-h") == 0) {
1091 write(STDOUT_FILENO, help, nxt_length(help));
1092
1093 if (sizeof(NXT_GROUP) == 1) {
1094 write(STDOUT_FILENO, primary, nxt_length(primary));
1095
1096 } else {
1097 write(STDOUT_FILENO, group, nxt_length(group));
1098 }
1099
1100 exit(0);
1101 }
1102
1103 end = nxt_sprintf(buf, buf + sizeof(buf), "unknown option \"%s\", "
1104 "try \"%s -h\" for available options\n",
1105 p, nxt_process_argv[0]);
1106
1107 write(STDERR_FILENO, buf, end - buf);
1108
1109 return NXT_ERROR;
1110 }
1111
1112 return NXT_OK;
1113 }
1114
1115
1116 nxt_listen_socket_t *
nxt_runtime_listen_socket_add(nxt_runtime_t * rt,nxt_sockaddr_t * sa)1117 nxt_runtime_listen_socket_add(nxt_runtime_t *rt, nxt_sockaddr_t *sa)
1118 {
1119 nxt_mp_t *mp;
1120 nxt_listen_socket_t *ls;
1121
1122 ls = nxt_array_zero_add(rt->listen_sockets);
1123 if (ls == NULL) {
1124 return NULL;
1125 }
1126
1127 mp = rt->mem_pool;
1128
1129 ls->sockaddr = nxt_sockaddr_create(mp, &sa->u.sockaddr, sa->socklen,
1130 sa->length);
1131 if (ls->sockaddr == NULL) {
1132 return NULL;
1133 }
1134
1135 ls->sockaddr->type = sa->type;
1136
1137 nxt_sockaddr_text(ls->sockaddr);
1138
1139 ls->socket = -1;
1140 ls->backlog = NXT_LISTEN_BACKLOG;
1141
1142 return ls;
1143 }
1144
1145
1146 static nxt_int_t
nxt_runtime_hostname(nxt_task_t * task,nxt_runtime_t * rt)1147 nxt_runtime_hostname(nxt_task_t *task, nxt_runtime_t *rt)
1148 {
1149 size_t length;
1150 char hostname[NXT_MAXHOSTNAMELEN + 1];
1151
1152 if (gethostname(hostname, NXT_MAXHOSTNAMELEN) != 0) {
1153 nxt_alert(task, "gethostname() failed %E", nxt_errno);
1154 return NXT_ERROR;
1155 }
1156
1157 /*
1158 * Linux gethostname(2):
1159 *
1160 * If the null-terminated hostname is too large to fit,
1161 * then the name is truncated, and no error is returned.
1162 *
1163 * For this reason an additional byte is reserved in the buffer.
1164 */
1165 hostname[NXT_MAXHOSTNAMELEN] = '\0';
1166
1167 length = nxt_strlen(hostname);
1168 rt->hostname.length = length;
1169
1170 rt->hostname.start = nxt_mp_nget(rt->mem_pool, length);
1171
1172 if (rt->hostname.start != NULL) {
1173 nxt_memcpy_lowcase(rt->hostname.start, (u_char *) hostname, length);
1174 return NXT_OK;
1175 }
1176
1177 return NXT_ERROR;
1178 }
1179
1180
1181 static nxt_int_t
nxt_runtime_log_files_init(nxt_runtime_t * rt)1182 nxt_runtime_log_files_init(nxt_runtime_t *rt)
1183 {
1184 nxt_file_t *file;
1185 nxt_list_t *log_files;
1186
1187 log_files = nxt_list_create(rt->mem_pool, 1, sizeof(nxt_file_t));
1188
1189 if (nxt_fast_path(log_files != NULL)) {
1190 rt->log_files = log_files;
1191
1192 /* Preallocate the main log. This allocation cannot fail. */
1193 file = nxt_list_zero_add(log_files);
1194
1195 file->fd = NXT_FILE_INVALID;
1196 file->log_level = NXT_LOG_ALERT;
1197
1198 return NXT_OK;
1199 }
1200
1201 return NXT_ERROR;
1202 }
1203
1204
1205 nxt_file_t *
nxt_runtime_log_file_add(nxt_runtime_t * rt,nxt_str_t * name)1206 nxt_runtime_log_file_add(nxt_runtime_t *rt, nxt_str_t *name)
1207 {
1208 nxt_int_t ret;
1209 nxt_file_t *file;
1210 nxt_file_name_str_t file_name;
1211
1212 ret = nxt_file_name_create(rt->mem_pool, &file_name, "V%Z", name);
1213
1214 if (nxt_slow_path(ret != NXT_OK)) {
1215 return NULL;
1216 }
1217
1218 nxt_list_each(file, rt->log_files) {
1219
1220 /* STUB: hardecoded case sensitive/insensitive. */
1221
1222 if (file->name != NULL
1223 && nxt_file_name_eq(file->name, file_name.start))
1224 {
1225 return file;
1226 }
1227
1228 } nxt_list_loop;
1229
1230 file = nxt_list_zero_add(rt->log_files);
1231
1232 if (nxt_slow_path(file == NULL)) {
1233 return NULL;
1234 }
1235
1236 file->fd = NXT_FILE_INVALID;
1237 file->log_level = NXT_LOG_ALERT;
1238 file->name = file_name.start;
1239
1240 return file;
1241 }
1242
1243
1244 static nxt_int_t
nxt_runtime_log_files_create(nxt_task_t * task,nxt_runtime_t * rt)1245 nxt_runtime_log_files_create(nxt_task_t *task, nxt_runtime_t *rt)
1246 {
1247 nxt_int_t ret;
1248 nxt_file_t *file;
1249
1250 nxt_list_each(file, rt->log_files) {
1251
1252 ret = nxt_file_open(task, file, O_WRONLY | O_APPEND, O_CREAT,
1253 NXT_FILE_OWNER_ACCESS);
1254
1255 if (ret != NXT_OK) {
1256 return NXT_ERROR;
1257 }
1258
1259 } nxt_list_loop;
1260
1261 file = nxt_list_first(rt->log_files);
1262
1263 return nxt_file_stderr(file);
1264 }
1265
1266
1267 nxt_int_t
nxt_runtime_listen_sockets_create(nxt_task_t * task,nxt_runtime_t * rt)1268 nxt_runtime_listen_sockets_create(nxt_task_t *task, nxt_runtime_t *rt)
1269 {
1270 nxt_int_t ret;
1271 nxt_uint_t c, p, ncurr, nprev;
1272 nxt_listen_socket_t *curr, *prev;
1273
1274 curr = rt->listen_sockets->elts;
1275 ncurr = rt->listen_sockets->nelts;
1276
1277 if (rt->inherited_sockets != NULL) {
1278 prev = rt->inherited_sockets->elts;
1279 nprev = rt->inherited_sockets->nelts;
1280
1281 } else {
1282 prev = NULL;
1283 nprev = 0;
1284 }
1285
1286 for (c = 0; c < ncurr; c++) {
1287
1288 for (p = 0; p < nprev; p++) {
1289
1290 if (nxt_sockaddr_cmp(curr[c].sockaddr, prev[p].sockaddr)) {
1291
1292 ret = nxt_listen_socket_update(task, &curr[c], &prev[p]);
1293 if (ret != NXT_OK) {
1294 return NXT_ERROR;
1295 }
1296
1297 goto next;
1298 }
1299 }
1300
1301 if (nxt_listen_socket_create(task, rt->mem_pool, &curr[c]) != NXT_OK) {
1302 return NXT_ERROR;
1303 }
1304
1305 next:
1306
1307 continue;
1308 }
1309
1310 return NXT_OK;
1311 }
1312
1313
1314 nxt_int_t
nxt_runtime_listen_sockets_enable(nxt_task_t * task,nxt_runtime_t * rt)1315 nxt_runtime_listen_sockets_enable(nxt_task_t *task, nxt_runtime_t *rt)
1316 {
1317 nxt_uint_t i, n;
1318 nxt_listen_socket_t *ls;
1319
1320 ls = rt->listen_sockets->elts;
1321 n = rt->listen_sockets->nelts;
1322
1323 for (i = 0; i < n; i++) {
1324 if (ls[i].flags == NXT_NONBLOCK) {
1325 if (nxt_listen_event(task, &ls[i]) == NULL) {
1326 return NXT_ERROR;
1327 }
1328 }
1329 }
1330
1331 return NXT_OK;
1332 }
1333
1334
1335 nxt_str_t *
nxt_current_directory(nxt_mp_t * mp)1336 nxt_current_directory(nxt_mp_t *mp)
1337 {
1338 size_t length;
1339 u_char *p;
1340 nxt_str_t *name;
1341 char buf[NXT_MAX_PATH_LEN];
1342
1343 length = nxt_dir_current(buf, NXT_MAX_PATH_LEN);
1344
1345 if (nxt_fast_path(length != 0)) {
1346 name = nxt_str_alloc(mp, length + 1);
1347
1348 if (nxt_fast_path(name != NULL)) {
1349 p = nxt_cpymem(name->start, buf, length);
1350 *p = '/';
1351
1352 return name;
1353 }
1354 }
1355
1356 return NULL;
1357 }
1358
1359
1360 static nxt_int_t
nxt_runtime_pid_file_create(nxt_task_t * task,nxt_file_name_t * pid_file)1361 nxt_runtime_pid_file_create(nxt_task_t *task, nxt_file_name_t *pid_file)
1362 {
1363 ssize_t length;
1364 nxt_int_t n;
1365 nxt_file_t file;
1366 u_char pid[NXT_INT64_T_LEN + nxt_length("\n")];
1367
1368 nxt_memzero(&file, sizeof(nxt_file_t));
1369
1370 file.name = pid_file;
1371
1372 n = nxt_file_open(task, &file, O_WRONLY, O_CREAT | O_TRUNC,
1373 NXT_FILE_DEFAULT_ACCESS);
1374
1375 if (n != NXT_OK) {
1376 return NXT_ERROR;
1377 }
1378
1379 length = nxt_sprintf(pid, pid + sizeof(pid), "%PI%n", nxt_pid) - pid;
1380
1381 if (nxt_file_write(&file, pid, length, 0) != length) {
1382 return NXT_ERROR;
1383 }
1384
1385 nxt_file_close(task, &file);
1386
1387 return NXT_OK;
1388 }
1389
1390
1391 void
nxt_runtime_process_release(nxt_runtime_t * rt,nxt_process_t * process)1392 nxt_runtime_process_release(nxt_runtime_t *rt, nxt_process_t *process)
1393 {
1394 nxt_process_t *child;
1395
1396 if (process->registered == 1) {
1397 nxt_runtime_process_remove(rt, process);
1398 }
1399
1400 if (process->link.next != NULL) {
1401 nxt_queue_remove(&process->link);
1402 }
1403
1404 nxt_queue_each(child, &process->children, nxt_process_t, link) {
1405 nxt_queue_remove(&child->link);
1406 child->link.next = NULL;
1407 } nxt_queue_loop;
1408
1409 nxt_assert(process->use_count == 0);
1410 nxt_assert(process->registered == 0);
1411
1412 nxt_port_mmaps_destroy(&process->incoming, 1);
1413
1414 nxt_thread_mutex_destroy(&process->incoming.mutex);
1415
1416 /* processes from nxt_runtime_process_get() have no memory pool */
1417 if (process->mem_pool != NULL) {
1418 nxt_mp_destroy(process->mem_pool);
1419 }
1420
1421 nxt_mp_free(rt->mem_pool, process);
1422 }
1423
1424
1425 static nxt_int_t
nxt_runtime_lvlhsh_pid_test(nxt_lvlhsh_query_t * lhq,void * data)1426 nxt_runtime_lvlhsh_pid_test(nxt_lvlhsh_query_t *lhq, void *data)
1427 {
1428 nxt_process_t *process;
1429
1430 process = data;
1431
1432 if (lhq->key.length == sizeof(nxt_pid_t)
1433 && *(nxt_pid_t *) lhq->key.start == process->pid)
1434 {
1435 return NXT_OK;
1436 }
1437
1438 return NXT_DECLINED;
1439 }
1440
1441 static const nxt_lvlhsh_proto_t lvlhsh_processes_proto nxt_aligned(64) = {
1442 NXT_LVLHSH_DEFAULT,
1443 nxt_runtime_lvlhsh_pid_test,
1444 nxt_lvlhsh_alloc,
1445 nxt_lvlhsh_free,
1446 };
1447
1448
1449 nxt_inline void
nxt_runtime_process_lhq_pid(nxt_lvlhsh_query_t * lhq,nxt_pid_t * pid)1450 nxt_runtime_process_lhq_pid(nxt_lvlhsh_query_t *lhq, nxt_pid_t *pid)
1451 {
1452 lhq->key_hash = nxt_murmur_hash2(pid, sizeof(*pid));
1453 lhq->key.length = sizeof(*pid);
1454 lhq->key.start = (u_char *) pid;
1455 lhq->proto = &lvlhsh_processes_proto;
1456 }
1457
1458
1459 nxt_process_t *
nxt_runtime_process_find(nxt_runtime_t * rt,nxt_pid_t pid)1460 nxt_runtime_process_find(nxt_runtime_t *rt, nxt_pid_t pid)
1461 {
1462 nxt_process_t *process;
1463 nxt_lvlhsh_query_t lhq;
1464
1465 process = NULL;
1466
1467 nxt_runtime_process_lhq_pid(&lhq, &pid);
1468
1469 nxt_thread_mutex_lock(&rt->processes_mutex);
1470
1471 if (nxt_lvlhsh_find(&rt->processes, &lhq) == NXT_OK) {
1472 process = lhq.value;
1473
1474 } else {
1475 nxt_thread_log_debug("process %PI not found", pid);
1476 }
1477
1478 nxt_thread_mutex_unlock(&rt->processes_mutex);
1479
1480 return process;
1481 }
1482
1483
1484 static nxt_process_t *
nxt_runtime_process_get(nxt_runtime_t * rt,nxt_pid_t pid)1485 nxt_runtime_process_get(nxt_runtime_t *rt, nxt_pid_t pid)
1486 {
1487 nxt_process_t *process;
1488 nxt_lvlhsh_query_t lhq;
1489
1490 nxt_runtime_process_lhq_pid(&lhq, &pid);
1491
1492 nxt_thread_mutex_lock(&rt->processes_mutex);
1493
1494 if (nxt_lvlhsh_find(&rt->processes, &lhq) == NXT_OK) {
1495 nxt_thread_log_debug("process %PI found", pid);
1496
1497 nxt_thread_mutex_unlock(&rt->processes_mutex);
1498
1499 process = lhq.value;
1500 process->use_count++;
1501
1502 return process;
1503 }
1504
1505 process = nxt_process_new(rt);
1506 if (nxt_slow_path(process == NULL)) {
1507
1508 nxt_thread_mutex_unlock(&rt->processes_mutex);
1509
1510 return NULL;
1511 }
1512
1513 process->pid = pid;
1514
1515 lhq.replace = 0;
1516 lhq.value = process;
1517 lhq.pool = rt->mem_pool;
1518
1519 switch (nxt_lvlhsh_insert(&rt->processes, &lhq)) {
1520
1521 case NXT_OK:
1522 if (rt->nprocesses == 0) {
1523 rt->mprocess = process;
1524 }
1525
1526 rt->nprocesses++;
1527
1528 process->registered = 1;
1529
1530 nxt_thread_log_debug("process %PI insert", pid);
1531 break;
1532
1533 default:
1534 nxt_thread_log_debug("process %PI insert failed", pid);
1535 break;
1536 }
1537
1538 nxt_thread_mutex_unlock(&rt->processes_mutex);
1539
1540 return process;
1541 }
1542
1543
1544 void
nxt_runtime_process_add(nxt_task_t * task,nxt_process_t * process)1545 nxt_runtime_process_add(nxt_task_t *task, nxt_process_t *process)
1546 {
1547 nxt_port_t *port;
1548 nxt_runtime_t *rt;
1549 nxt_lvlhsh_query_t lhq;
1550
1551 nxt_assert(process->registered == 0);
1552
1553 rt = task->thread->runtime;
1554
1555 nxt_runtime_process_lhq_pid(&lhq, &process->pid);
1556
1557 lhq.replace = 0;
1558 lhq.value = process;
1559 lhq.pool = rt->mem_pool;
1560
1561 nxt_thread_mutex_lock(&rt->processes_mutex);
1562
1563 switch (nxt_lvlhsh_insert(&rt->processes, &lhq)) {
1564
1565 case NXT_OK:
1566 if (rt->nprocesses == 0) {
1567 rt->mprocess = process;
1568 }
1569
1570 rt->nprocesses++;
1571
1572 nxt_process_port_each(process, port) {
1573
1574 port->pid = process->pid;
1575
1576 nxt_runtime_port_add(task, port);
1577
1578 } nxt_process_port_loop;
1579
1580 process->registered = 1;
1581
1582 nxt_thread_log_debug("process %PI added", process->pid);
1583 break;
1584
1585 default:
1586 nxt_thread_log_debug("process %PI failed to add", process->pid);
1587 break;
1588 }
1589
1590 nxt_thread_mutex_unlock(&rt->processes_mutex);
1591 }
1592
1593
1594 void
nxt_runtime_process_remove(nxt_runtime_t * rt,nxt_process_t * process)1595 nxt_runtime_process_remove(nxt_runtime_t *rt, nxt_process_t *process)
1596 {
1597 nxt_pid_t pid;
1598 nxt_lvlhsh_query_t lhq;
1599
1600 pid = process->pid;
1601
1602 nxt_runtime_process_lhq_pid(&lhq, &pid);
1603
1604 lhq.pool = rt->mem_pool;
1605
1606 nxt_thread_mutex_lock(&rt->processes_mutex);
1607
1608 switch (nxt_lvlhsh_delete(&rt->processes, &lhq)) {
1609
1610 case NXT_OK:
1611 rt->nprocesses--;
1612
1613 process = lhq.value;
1614
1615 process->registered = 0;
1616
1617 nxt_thread_log_debug("process %PI removed", pid);
1618 break;
1619
1620 default:
1621 nxt_thread_log_debug("process %PI remove failed", pid);
1622 break;
1623 }
1624
1625 nxt_thread_mutex_unlock(&rt->processes_mutex);
1626 }
1627
1628
1629 nxt_process_t *
nxt_runtime_process_first(nxt_runtime_t * rt,nxt_lvlhsh_each_t * lhe)1630 nxt_runtime_process_first(nxt_runtime_t *rt, nxt_lvlhsh_each_t *lhe)
1631 {
1632 nxt_lvlhsh_each_init(lhe, &lvlhsh_processes_proto);
1633
1634 return nxt_runtime_process_next(rt, lhe);
1635 }
1636
1637
1638 nxt_port_t *
nxt_runtime_process_port_create(nxt_task_t * task,nxt_runtime_t * rt,nxt_pid_t pid,nxt_port_id_t id,nxt_process_type_t type)1639 nxt_runtime_process_port_create(nxt_task_t *task, nxt_runtime_t *rt,
1640 nxt_pid_t pid, nxt_port_id_t id, nxt_process_type_t type)
1641 {
1642 nxt_port_t *port;
1643 nxt_process_t *process;
1644
1645 process = nxt_runtime_process_get(rt, pid);
1646 if (nxt_slow_path(process == NULL)) {
1647 return NULL;
1648 }
1649
1650 port = nxt_port_new(task, id, pid, type);
1651 if (nxt_slow_path(port == NULL)) {
1652 nxt_process_use(task, process, -1);
1653 return NULL;
1654 }
1655
1656 nxt_process_port_add(task, process, port);
1657
1658 nxt_process_use(task, process, -1);
1659
1660 nxt_runtime_port_add(task, port);
1661
1662 nxt_port_use(task, port, -1);
1663
1664 return port;
1665 }
1666
1667
1668 static void
nxt_runtime_port_add(nxt_task_t * task,nxt_port_t * port)1669 nxt_runtime_port_add(nxt_task_t *task, nxt_port_t *port)
1670 {
1671 nxt_int_t res;
1672 nxt_runtime_t *rt;
1673
1674 rt = task->thread->runtime;
1675
1676 res = nxt_port_hash_add(&rt->ports, port);
1677
1678 if (res != NXT_OK) {
1679 return;
1680 }
1681
1682 rt->port_by_type[port->type] = port;
1683
1684 nxt_port_use(task, port, 1);
1685 }
1686
1687
1688 void
nxt_runtime_port_remove(nxt_task_t * task,nxt_port_t * port)1689 nxt_runtime_port_remove(nxt_task_t *task, nxt_port_t *port)
1690 {
1691 nxt_int_t res;
1692 nxt_runtime_t *rt;
1693
1694 rt = task->thread->runtime;
1695
1696 res = nxt_port_hash_remove(&rt->ports, port);
1697
1698 if (res != NXT_OK) {
1699 return;
1700 }
1701
1702 if (rt->port_by_type[port->type] == port) {
1703 rt->port_by_type[port->type] = NULL;
1704 }
1705
1706 nxt_port_use(task, port, -1);
1707 }
1708
1709
1710 nxt_port_t *
nxt_runtime_port_find(nxt_runtime_t * rt,nxt_pid_t pid,nxt_port_id_t port_id)1711 nxt_runtime_port_find(nxt_runtime_t *rt, nxt_pid_t pid,
1712 nxt_port_id_t port_id)
1713 {
1714 return nxt_port_hash_find(&rt->ports, pid, port_id);
1715 }
1716