nginx: src/os/unix/ngx_freebsd_rfork

annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 469:2ff194b74f1e release-0.1.9

nginx-0.1.9-RELEASE import *) Bugfix: the proxied request was sent without arguments if the request contains "//", "/./", "/../" or "%XX". *) Bugfix: the large compressed responses may be transferred not completely. *) Bugfix: the files bigger than 2G was not transferred on Linux that does not support sendfile64(). *) Bugfix: while the build configuration on Linux the --with-poll_module parameter was required; the bug had appeared in 0.1.8.

author	Igor Sysoev <igor@sysoev.ru>
date	Thu, 25 Nov 2004 16:17:31 +0000
parents	a88a3e4e158f
children	d4ea69372b94

rev	line source
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	1
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	2 /*
444 42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright Igor Sysoev <igor@sysoev.ru> parents: 441 diff changeset	3 * Copyright (C) Igor Sysoev
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	4 */
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	5
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	6
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	7 #include <ngx_config.h>
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	8 #include <ngx_core.h>
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	9
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	10 /*
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	11 * The threads implementation uses the rfork(RFPROC\|RFTHREAD\|RFMEM) syscall
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	12 * to create threads. All threads use the stacks of the same size mmap()ed
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	13 * below the main stack. Thus the current thread id is determinated via
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	14 * the stack pointer value.
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	15 *
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	16 * The mutex implementation uses the ngx_atomic_cmp_set() operation
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	17 * to acquire a mutex and the SysV semaphore to wait on a mutex and to wake up
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	18 * the waiting threads. The light mutex does not use semaphore, so after
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	19 * spinning in the lock the thread calls sched_yield(). However the light
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	20 * mutecies are intended to be used with the "trylock" operation only.
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	21 * The SysV semop() is a cheap syscall, particularly if it has little sembuf's
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	22 * and does not use SEM_UNDO.
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	23 *
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	24 * The condition variable implementation uses the signal #64.
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	25 * The signal handler is SIG_IGN so the kill() is a cheap syscall.
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	26 * The thread waits a signal in kevent(). The use of the EVFILT_SIGNAL
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	27 * is safe since FreeBSD 4.10-STABLE.
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	28 *
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	29 * This threads implementation currently works on i386 (486+) and amd64
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	30 * platforms only.
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	31 */
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	32
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	33
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	34 char *ngx_freebsd_kern_usrstack;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	35 size_t ngx_thread_stack_size;
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	36
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	37
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	38 static size_t rz_size;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	39 static size_t usable_stack_size;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	40 static char *last_stack;
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	41
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	42 static ngx_uint_t nthreads;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	43 static ngx_uint_t max_threads;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	44
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	45 static ngx_uint_t nkeys;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	46 static ngx_tid_t tids; / the threads tids array */
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	47 void *ngx_tls; / the threads tls's array */
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	48
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	49 /* the thread-safe libc errno */
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	50
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	51 static int errno0; /* the main thread's errno */
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	52 static int errnos; / the threads errno's array */
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	53
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	54 int *__error()
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	55 {
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	56 int tid;
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	57
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	58 tid = ngx_gettid();
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	59
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	60 return tid ? &errnos[tid - 1] : &errno0;
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	61 }
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	62
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	63
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	64 /*
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	65 * __isthreaded enables the spinlocks in some libc functions, i.e. in malloc()
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	66 * and some other places. Nevertheless we protect our malloc()/free() calls
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	67 * by own mutex that is more efficient than the spinlock.
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	68 *
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	69 * _spinlock() is a weak referenced stub in src/lib/libc/gen/_spinlock_stub.c
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	70 * that does nothing.
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	71 */
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	72
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	73 extern int __isthreaded;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	74
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	75 void _spinlock(ngx_atomic_t *lock)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	76 {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	77 ngx_int_t tries;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	78
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	79 tries = 0;
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	80
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	81 for ( ;; ) {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	82
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	83 if (*lock) {
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	84 if (ngx_ncpu > 1 && tries++ < 1000) {
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	85 continue;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	86 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	87
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	88 sched_yield();
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	89 tries = 0;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	90
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	91 } else {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	92 if (ngx_atomic_cmp_set(lock, 0, 1)) {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	93 return;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	94 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	95 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	96 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	97 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	98
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	99
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	100 /*
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	101 * Before FreeBSD 5.1 _spinunlock() is a simple #define in
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	102 * src/lib/libc/include/spinlock.h that zeroes lock.
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	103 *
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	104 * Since FreeBSD 5.1 _spinunlock() is a weak referenced stub in
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	105 * src/lib/libc/gen/_spinlock_stub.c that does nothing.
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	106 */
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	107
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	108 #ifndef _spinunlock
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	109
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	110 void _spinunlock(ngx_atomic_t *lock)
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	111 {
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	112 *lock = 0;
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	113 }
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	114
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	115 #endif
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	116
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	117
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	118 ngx_err_t ngx_create_thread(ngx_tid_t tid, void (func)(void arg), void *arg,
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	119 ngx_log_t *log)
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	120 {
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	121 ngx_pid_t id;
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	122 ngx_err_t err;
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	123 char stack, stack_top;
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	124
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	125 if (nthreads >= max_threads) {
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	126 ngx_log_error(NGX_LOG_CRIT, log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	127 "no more than %ui threads can be created", max_threads);
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	128 return NGX_ERROR;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	129 }
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	130
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	131 last_stack -= ngx_thread_stack_size;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	132
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	133 stack = mmap(last_stack, usable_stack_size, PROT_READ\|PROT_WRITE,
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	134 MAP_STACK, -1, 0);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	135
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	136 if (stack == MAP_FAILED) {
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	137 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	138 "mmap(%p:%uz, MAP_STACK) thread stack failed",
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	139 last_stack, usable_stack_size);
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	140 return NGX_ERROR;
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	141 }
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	142
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	143 if (stack != last_stack) {
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	144 ngx_log_error(NGX_LOG_ALERT, log, 0,
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	145 "stack %p address was changed to %p", last_stack, stack);
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	146 return NGX_ERROR;
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	147 }
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	148
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	149 stack_top = stack + usable_stack_size;
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	150
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	151 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	152 "thread stack: %p-%p", stack, stack_top);
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	153
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	154 ngx_set_errno(0);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	155
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	156 id = rfork_thread(RFPROC\|RFTHREAD\|RFMEM, stack_top,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	157 (ngx_rfork_thread_func_pt) func, arg);
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	158
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	159 err = ngx_errno;
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	160
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	161 if (id == -1) {
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	162 ngx_log_error(NGX_LOG_ALERT, log, err, "rfork() failed");
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	163
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	164 } else {
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	165 *tid = id;
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	166 nthreads = (ngx_freebsd_kern_usrstack - stack_top)
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	167 / ngx_thread_stack_size;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	168 tids[nthreads] = id;
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	169
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	170 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "rfork()ed thread: %P", id);
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	171 }
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	172
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	173 return err;
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	174 }
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	175
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	176
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	177 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle)
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	178 {
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	179 char red_zone, zone;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	180 size_t len;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	181 ngx_int_t i;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	182 struct sigaction sa;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	183
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	184 max_threads = n + 1;
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	185
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	186 for (i = 0; i < n; i++) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	187 ngx_memzero(&sa, sizeof(struct sigaction));
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	188 sa.sa_handler = SIG_IGN;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	189 sigemptyset(&sa.sa_mask);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	190 if (sigaction(NGX_CV_SIGNAL, &sa, NULL) == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	191 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	192 "sigaction(%d, SIG_IGN) failed", NGX_CV_SIGNAL);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	193 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	194 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	195 }
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	196
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	197 len = sizeof(ngx_freebsd_kern_usrstack);
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	198 if (sysctlbyname("kern.usrstack", &ngx_freebsd_kern_usrstack, &len,
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	199 NULL, 0) == -1)
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	200 {
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	201 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	202 "sysctlbyname(kern.usrstack) failed");
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	203 return NGX_ERROR;
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	204 }
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	205
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	206 /* the main thread stack red zone */
346 55e496a8ece3 nginx-0.0.3-2004-06-06-23:49:18 import Igor Sysoev <igor@sysoev.ru> parents: 305 diff changeset	207 rz_size = ngx_pagesize;
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	208 red_zone = ngx_freebsd_kern_usrstack - (size + rz_size);
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	209
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	210 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	211 "usrstack: %p red zone: %p",
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	212 ngx_freebsd_kern_usrstack, red_zone);
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	213
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	214 zone = mmap(red_zone, rz_size, PROT_NONE, MAP_ANON, -1, 0);
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	215 if (zone == MAP_FAILED) {
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	216 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	217 "mmap(%p:%uz, PROT_NONE, MAP_ANON) red zone failed",
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	218 red_zone, rz_size);
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	219 return NGX_ERROR;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	220 }
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	221
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	222 if (zone != red_zone) {
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	223 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	224 "red zone %p address was changed to %p", red_zone, zone);
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	225 return NGX_ERROR;
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	226 }
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	227
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	228 /* create the thread errno' array */
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	229
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	230 if (!(errnos = ngx_calloc(n * sizeof(int), cycle->log))) {
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	231 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	232 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	233
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	234 /* create the thread tids array */
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	235
270 7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import Igor Sysoev <igor@sysoev.ru> parents: 267 diff changeset	236 if (!(tids = ngx_calloc((n + 1) * sizeof(ngx_tid_t), cycle->log))) {
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	237 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	238 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	239
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	240 tids[0] = ngx_pid;
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	241
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	242 /* create the thread tls' array */
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	243
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	244 ngx_tls = ngx_calloc(NGX_THREAD_KEYS_MAX * (n + 1) * sizeof(void *),
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	245 cycle->log);
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	246 if (ngx_tls == NULL) {
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	247 return NGX_ERROR;
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	248 }
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	249
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	250 nthreads = 1;
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	251
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	252 last_stack = zone + rz_size;
86 3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import Igor Sysoev <igor@sysoev.ru> parents: 85 diff changeset	253 usable_stack_size = size;
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	254 ngx_thread_stack_size = size + rz_size;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	255
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	256 /* allow the spinlock in libc malloc() */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	257 __isthreaded = 1;
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	258
271 e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	259 ngx_threaded = 1;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	260
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	261 return NGX_OK;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	262 }
3 34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import Igor Sysoev <igor@sysoev.ru> parents: diff changeset	263
84 fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import Igor Sysoev <igor@sysoev.ru> parents: 3 diff changeset	264
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	265 ngx_tid_t ngx_thread_self()
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	266 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	267 int tid;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	268 ngx_tid_t pid;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	269
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	270 tid = ngx_gettid();
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	271
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	272 if (tids == NULL) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	273 return ngx_pid;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	274 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	275
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	276 return tids[tid];
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	277 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	278
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	279
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	280 ngx_err_t ngx_thread_key_create(ngx_tls_key_t *key)
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	281 {
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	282 if (nkeys >= NGX_THREAD_KEYS_MAX) {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	283 return NGX_ENOMEM;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	284 }
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	285
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	286 *key = nkeys++;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	287
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	288 return 0;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	289 }
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	290
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	291
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	292 ngx_err_t ngx_thread_set_tls(ngx_tls_key_t key, void *value)
381 02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	293 {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	294 if (key >= NGX_THREAD_KEYS_MAX) {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	295 return NGX_EINVAL;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	296 }
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	297
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	298 ngx_tls[key * NGX_THREAD_KEYS_MAX + ngx_gettid()] = value;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import Igor Sysoev <igor@sysoev.ru> parents: 379 diff changeset	299 return 0;
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	300 }
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	301
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	302
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	303 ngx_mutex_t ngx_mutex_init(ngx_log_t log, ngx_uint_t flags)
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	304 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	305 ngx_mutex_t *m;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	306 union semun op;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	307
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	308 if (!(m = ngx_alloc(sizeof(ngx_mutex_t), log))) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	309 return NULL;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	310 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	311
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	312 m->lock = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	313 m->log = log;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	314
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	315 if (flags & NGX_MUTEX_LIGHT) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	316 m->semid = -1;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	317 return m;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	318 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	319
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	320 m->semid = semget(IPC_PRIVATE, 1, SEM_R\|SEM_A);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	321 if (m->semid == -1) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	322 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "semget() failed");
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	323 return NULL;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	324 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	325
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	326 op.val = 0;
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	327
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	328 if (semctl(m->semid, 0, SETVAL, op) == -1) {
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	329 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "semctl(SETVAL) failed");
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	330
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	331 if (semctl(m->semid, 0, IPC_RMID) == -1) {
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	332 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	333 "semctl(IPC_RMID) failed");
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	334 }
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	335
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	336 return NULL;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	337 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	338
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	339 return m;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	340 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	341
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	342
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	343 void ngx_mutex_destroy(ngx_mutex_t *m)
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	344 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	345 if (semctl(m->semid, 0, IPC_RMID) == -1) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	346 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	347 "semctl(IPC_RMID) failed");
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	348 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	349
267 83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import Igor Sysoev <igor@sysoev.ru> parents: 266 diff changeset	350 ngx_free((void *) m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	351 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	352
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	353
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	354 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try)
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	355 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	356 uint32_t lock, new, old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	357 ngx_uint_t tries;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	358 struct sembuf op;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	359
271 e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	360 if (!ngx_threaded) {
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	361 return NGX_OK;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	362 }
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	363
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	364 #if (NGX_DEBUG)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	365 if (try) {
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	366 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	367 "try lock mutex %p lock:%XD", m, m->lock);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	368 } else {
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	369 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	370 "lock mutex %p lock:%XD", m, m->lock);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	371 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	372 #endif
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	373
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	374 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	375 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	376
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	377 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	378 if (old & NGX_MUTEX_LOCK_BUSY) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	379
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	380 if (try) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	381 return NGX_AGAIN;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	382 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	383
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	384 if (ngx_ncpu > 1 && tries++ < 1000) {
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	385
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	386 /* the spinlock is used only on the SMP system */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	387
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	388 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	389 continue;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	390 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	391
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	392 if (m->semid == -1) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	393 sched_yield();
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	394
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	395 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	396 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	397 continue;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	398 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	399
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	400 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	401 "mutex %p lock:%XD", m, m->lock);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	402
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	403 /*
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	404 * The mutex is locked so we increase a number
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	405 * of the threads that are waiting on the mutex
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	406 */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	407
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	408 lock = old + 1;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	409
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	410 if ((lock & ~NGX_MUTEX_LOCK_BUSY) > nthreads) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	411 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	412 "%D threads wait for mutex %p, "
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	413 "while only %ui threads are available",
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	414 lock & ~NGX_MUTEX_LOCK_BUSY, m, nthreads);
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	415 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	416 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	417
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	418 if (ngx_atomic_cmp_set(&m->lock, old, lock)) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	419
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	420 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	421 "wait mutex %p lock:%XD", m, m->lock);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	422
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	423 /*
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	424 * The number of the waiting threads has been increased
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	425 * and we would wait on the SysV semaphore.
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	426 * A semaphore should wake up us more efficiently than
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	427 * a simple sched_yield() or usleep().
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	428 */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	429
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	430 op.sem_num = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	431 op.sem_op = -1;
375 744ccb59062d nginx-0.0.7-2004-07-02-19:54:34 import Igor Sysoev <igor@sysoev.ru> parents: 372 diff changeset	432 op.sem_flg = 0;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	433
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	434 if (semop(m->semid, &op, 1) == -1) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	435 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	436 "semop() failed while waiting on mutex %p", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	437 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	438 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	439
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	440 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	441 "mutex waked up %p lock:%XD", m, m->lock);
372 c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	442
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	443 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	444 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	445 continue;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	446 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	447
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	448 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	449
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	450 } else {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	451 lock = old \| NGX_MUTEX_LOCK_BUSY;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	452
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	453 if (ngx_atomic_cmp_set(&m->lock, old, lock)) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	454
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	455 /* we locked the mutex */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	456
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	457 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	458 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	459
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	460 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	461 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	462
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	463 if (tries++ > 1000) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	464
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	465 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	466 "mutex %p is contested", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	467
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	468 /* the mutex is probably contested so we are giving up now */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	469
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	470 sched_yield();
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	471
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	472 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	473 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	474 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	475 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	476
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	477 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	478 "mutex %p is locked, lock:%XD", m, m->lock);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	479
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	480 return NGX_OK;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	481 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	482
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	483
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	484 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	485 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	486 uint32_t lock, new, old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	487 struct sembuf op;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	488
271 e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	489 if (!ngx_threaded) {
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	490 return NGX_OK;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	491 }
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import Igor Sysoev <igor@sysoev.ru> parents: 270 diff changeset	492
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	493 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	494
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	495 if (!(old & NGX_MUTEX_LOCK_BUSY)) {
272 d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import Igor Sysoev <igor@sysoev.ru> parents: 271 diff changeset	496 ngx_log_error(NGX_LOG_ALERT, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	497 "trying to unlock the free mutex %p", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	498 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	499 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	500
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	501 /* free the mutex */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	502
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	503 #if 0
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	504 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	505 "unlock mutex %p lock:%XD", m, old);
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	506 #endif
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	507
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	508 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	509 lock = old & ~NGX_MUTEX_LOCK_BUSY;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	510
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	511 if (ngx_atomic_cmp_set(&m->lock, old, lock)) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	512 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	513 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	514
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	515 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	516 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	517
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	518 if (m->semid == -1) {
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	519 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	520 "mutex %p is unlocked", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	521
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	522 return NGX_OK;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	523 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	524
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	525 /* check whether we need to wake up a waiting thread */
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	526
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	527 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	528
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	529 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	530 if (old & NGX_MUTEX_LOCK_BUSY) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	531
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	532 /* the mutex is just locked by another thread */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	533
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	534 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	535 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	536
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	537 if (old == 0) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	538 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	539 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	540
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	541 /* there are the waiting threads */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	542
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	543 lock = old - 1;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	544
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	545 if (ngx_atomic_cmp_set(&m->lock, old, lock)) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	546
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	547 /* wake up the thread that waits on semaphore */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	548
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	549 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	550 "wake up mutex %p", m);
372 c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import Igor Sysoev <igor@sysoev.ru> parents: 371 diff changeset	551
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	552 op.sem_num = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	553 op.sem_op = 1;
375 744ccb59062d nginx-0.0.7-2004-07-02-19:54:34 import Igor Sysoev <igor@sysoev.ru> parents: 372 diff changeset	554 op.sem_flg = 0;
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	555
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	556 if (semop(m->semid, &op, 1) == -1) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	557 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	558 "semop() failed while waking up on mutex %p", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	559 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	560 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	561
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	562 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	563 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	564
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	565 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	566 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	567
379 73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import Igor Sysoev <igor@sysoev.ru> parents: 377 diff changeset	568 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	569 "mutex %p is unlocked", m);
266 5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	570
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	571 return NGX_OK;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import Igor Sysoev <igor@sysoev.ru> parents: 208 diff changeset	572 }
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	573
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	574
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	575 ngx_cond_t ngx_cond_init(ngx_log_t log)
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	576 {
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	577 ngx_cond_t *cv;
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	578
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	579 if (!(cv = ngx_alloc(sizeof(ngx_cond_t), log))) {
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	580 return NULL;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	581 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	582
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	583 cv->signo = NGX_CV_SIGNAL;
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	584 cv->tid = -1;
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	585 cv->log = log;
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	586 cv->kq = -1;
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	587
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	588 return cv;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	589 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	590
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	591
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	592 void ngx_cond_destroy(ngx_cond_t *cv)
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	593 {
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	594 if (close(cv->kq) == -1) {
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	595 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno,
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	596 "kqueue close() failed");
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	597 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	598
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	599 ngx_free(cv);
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	600 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	601
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	602
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	603 ngx_int_t ngx_cond_wait(ngx_cond_t cv, ngx_mutex_t m)
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	604 {
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	605 int n;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	606 ngx_err_t err;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	607 struct kevent kev;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	608 struct timespec ts;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	609
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	610 if (cv->kq == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	611
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	612 /*
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	613 * We have to add the EVFILT_SIGNAL filter in the rfork()ed thread.
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	614 * Otherwise the thread would not get a signal event.
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	615 *
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	616 * However, we have not to open the kqueue in the thread,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	617 * it is simply handy do it together.
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	618 */
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	619
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	620 cv->kq = kqueue();
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	621 if (cv->kq == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	622 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno, "kqueue() failed");
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	623 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	624 }
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	625
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	626 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cv->log, 0,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	627 "cv kq:%d signo:%d", cv->kq, cv->signo);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	628
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	629 kev.ident = cv->signo;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	630 kev.filter = EVFILT_SIGNAL;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	631 kev.flags = EV_ADD;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	632 kev.fflags = 0;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	633 kev.data = 0;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	634 kev.udata = NULL;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	635
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	636 ts.tv_sec = 0;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	637 ts.tv_nsec = 0;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	638
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	639 if (kevent(cv->kq, &kev, 1, NULL, 0, &ts) == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	640 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno, "kevent() failed");
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	641 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	642 }
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	643
2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	644 cv->tid = ngx_thread_self();
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	645 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	646
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	647 if (ngx_mutex_unlock(m) == NGX_ERROR) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	648 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	649 }
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	650
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	651 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	652 "cv %p wait, kq:%d, signo:%d", cv, cv->kq, cv->signo);
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	653
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	654 for ( ;; ) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	655 n = kevent(cv->kq, NULL, 0, &kev, 1, NULL);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	656
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	657 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cv->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	658 "cv %p kevent: %d", cv, n);
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	659
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	660 if (n == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	661 err = ngx_errno;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	662 ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	663 cv->log, ngx_errno,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	664 "kevent() failed while waiting condition variable %p",
a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	665 cv);
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	666
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	667 if (err == NGX_EINTR) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	668 break;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	669 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	670
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	671 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	672 }
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	673
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	674 if (n == 0) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	675 ngx_log_error(NGX_LOG_ALERT, cv->log, 0,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	676 "kevent() returned no events "
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	677 "while waiting condition variable %p",
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	678 cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	679 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	680 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	681
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	682 if (kev.filter != EVFILT_SIGNAL) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	683 ngx_log_error(NGX_LOG_ALERT, cv->log, 0,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	684 "kevent() returned unexpected events: %d "
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	685 "while waiting condition variable %p",
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	686 kev.filter, cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	687 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	688 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	689
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	690 if (kev.ident != (uintptr_t) cv->signo) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	691 ngx_log_error(NGX_LOG_ALERT, cv->log, 0,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	692 "kevent() returned unexpected signal: %d ",
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	693 "while waiting condition variable %p",
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	694 kev.ident, cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	695 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	696 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	697
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	698 break;
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	699 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	700
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	701 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is waked up", cv);
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	702
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	703 if (ngx_mutex_lock(m) == NGX_ERROR) {
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	704 return NGX_ERROR;
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	705 }
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	706
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	707 return NGX_OK;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	708 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	709
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	710
371 780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import Igor Sysoev <igor@sysoev.ru> parents: 370 diff changeset	711 ngx_int_t ngx_cond_signal(ngx_cond_t *cv)
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	712 {
377 41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	713 ngx_err_t err;
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	714
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	715 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	716 "cv %p to signal %P %d",
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	717 cv, cv->tid, cv->signo);
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	718
469 2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	719 if (cv->tid == -1) {
2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	720 return NGX_OK;
2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	721 }
2ff194b74f1e nginx-0.1.9-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 461 diff changeset	722
376 d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import Igor Sysoev <igor@sysoev.ru> parents: 375 diff changeset	723 if (kill(cv->tid, cv->signo) == -1) {
377 41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	724
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	725 err = ngx_errno;
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	726
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	727 ngx_log_error(NGX_LOG_ALERT, cv->log, err,
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	728 "kill() failed while signaling condition variable %p", cv);
377 41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	729
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	730 if (err == NGX_ESRCH) {
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	731 cv->tid = -1;
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	732 }
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import Igor Sysoev <igor@sysoev.ru> parents: 376 diff changeset	733
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	734 return NGX_ERROR;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	735 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	736
461 a88a3e4e158f nginx-0.1.5-RELEASE import Igor Sysoev <igor@sysoev.ru> parents: 444 diff changeset	737 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is signaled", cv);
370 54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	738
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	739 return NGX_OK;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import Igor Sysoev <igor@sysoev.ru> parents: 346 diff changeset	740 }

Mercurial > hg > nginx

annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 469:2ff194b74f1e release-0.1.9