Mercurial > hg > nginx

annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 381:02a511569afb

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nginx-0.0.7-2004-07-07-19:01:00 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 07 Jul 2004 15:01:00 +0000
parents 73688d5d7fc3
children da8c5707af39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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1
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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2 /*
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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3 * Copyright (C) 2002-2004 Igor Sysoev, http://sysoev.ru/en/
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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4 */
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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5
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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6
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
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parents: 3
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7 #include <ngx_config.h>
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
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8 #include <ngx_core.h>
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
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9
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5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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10 /*
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
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11 * The threads implementation uses the rfork(RFPROC|RFTHREAD|RFMEM) syscall
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5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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12 * to create threads. All threads use the stacks of the same size mmap()ed
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d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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parents: 375
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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
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14 * the stack pointer value.
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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15 *
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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16 * The mutex implementation uses the ngx_atomic_cmp_set() operation
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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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
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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
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parents: 346
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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
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parents: 346
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20 * mutecies are intended to be used with the "trylock" operation only.
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d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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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
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22 * and does not use SEM_UNDO.
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5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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23 *
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d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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24 * The condition variable implementation uses signal #64. The signal handler
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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25 * is SIG_IGN so the kill() is a cheap syscall. The thread waits a signal
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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parents: 375
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26 * in kevent(). The use of the EVFILT_SIGNAL is safe since FreeBSD 4.7.
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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27 *
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54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
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28 * This threads implementation currently works on i386 (486+) and amd64
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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29 * platforms only.
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30 */
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31
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32
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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33 char *ngx_freebsd_kern_usrstack;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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34 size_t ngx_thread_stack_size;
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35
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36
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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37 static size_t rz_size;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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38 static size_t usable_stack_size;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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39 static char *last_stack;
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3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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40
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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41 static ngx_uint_t nthreads;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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42 static ngx_uint_t max_threads;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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43
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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44 static ngx_uint_t nkeys;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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45 static ngx_tid_t *tids; /* the threads tids array */
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
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parents: 379
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46 void **ngx_tls; /* the threads tls's array */
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
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47
267
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48 /* the thread-safe libc errno */
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fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
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49
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3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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50 static int errno0; /* the main thread's errno */
266
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51 static int *errnos; /* the threads errno's array */
3
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52
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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53 int *__error()
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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54 {
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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55 int tid;
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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56
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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57 tid = ngx_gettid();
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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58
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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59 return tid ? &errnos[tid - 1] : &errno0;
3
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60 }
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61
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62
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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63 /*
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d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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64 * __isthreaded enables the spinlocks in some libc functions, i.e. in malloc()
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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65 * and some other places. Nevertheless we protect our malloc()/free() calls
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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66 * by own mutex that is more efficient than the spinlock.
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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67 *
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68 * _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
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69 * that does nothing.
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70 */
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71
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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72 extern int __isthreaded;
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73
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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74 void _spinlock(ngx_atomic_t *lock)
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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75 {
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76 ngx_int_t tries;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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77
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78 tries = 0;
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79
267
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80 for ( ;; ) {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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81
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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82 if (*lock) {
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83 if (ngx_ncpu > 1 && tries++ < 1000) {
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84 continue;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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85 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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86
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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87 sched_yield();
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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88 tries = 0;
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89
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90 } else {
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91 if (ngx_atomic_cmp_set(lock, 0, 1)) {
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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92 return;
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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93 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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94 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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95 }
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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96 }
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97
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98
272
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99 /*
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100 * Before FreeBSD 5.1 _spinunlock() is a simple #define in
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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101 * src/lib/libc/include/spinlock.h that zeroes lock.
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102 *
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103 * Since FreeBSD 5.1 _spinunlock() is a weak referenced stub in
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104 * src/lib/libc/gen/_spinlock_stub.c that does nothing.
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105 */
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106
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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107 #ifndef _spinunlock
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108
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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109 void _spinunlock(ngx_atomic_t *lock)
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110 {
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111 *lock = 0;
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112 }
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113
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114 #endif
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115
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116
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d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
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117 int ngx_create_thread(ngx_tid_t *tid, void* (*func)(void *arg), void *arg,
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
118 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
119 {
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
120 int id, err;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
121 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
122
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
123 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
124 ngx_log_error(NGX_LOG_CRIT, log, 0,
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
125 "no more than %d 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
126 return NGX_ERROR;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
127 }
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
129 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
130
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
131 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
132 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
133
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
134 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
135 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
136 "mmap(" PTR_FMT ":" SIZE_T_FMT
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
137 ", 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
138 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
139 return NGX_ERROR;
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
140 }
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 if (stack != last_stack) {
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
143 ngx_log_error(NGX_LOG_ALERT, log, 0, "stack address was changed");
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
144 }
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
145
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
146 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
147
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
148 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
149 "thread stack: " PTR_FMT "-" PTR_FMT, 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
150
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
151 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
152
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
153 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
154 (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
155
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
156 err = ngx_errno;
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
158 if (id == -1) {
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
159 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
160
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
161 } else {
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162 *tid = id;
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
163 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
164 / 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
165 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
166
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
167 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "rfork()ed thread: %d", id);
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
168 }
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
169
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170 return err;
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
171 }
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
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
174 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
175 {
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
176 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
177 size_t len;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
178 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
179 struct sigaction sa;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
180
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
181 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
182
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
183 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
184 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
185 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
186 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
187 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
188 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
189 "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
190 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
191 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
192 }
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
193
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
194 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
195 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
196 NULL, 0) == -1)
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
197 {
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
198 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
199 "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
200 return NGX_ERROR;
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
201 }
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
202
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
203 /* 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
204 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
205 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
206
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
207 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
208 "usrstack: " PTR_FMT " red zone: " PTR_FMT,
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
209 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
210
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
211 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
212 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
213 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
214 "mmap(" PTR_FMT ":" SIZE_T_FMT
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
215 ", 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
216 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
217 return NGX_ERROR;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
218 }
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
219
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
220 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
221 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
222 "red zone address was changed");
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
223 }
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
224
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
225 /* create the threads errno's array */
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
226
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
227 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
228 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
229 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
230
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
231 /* create the threads tids array */
86
3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 85
diff changeset
232
270
7bb9562216ce nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 267
diff changeset
233 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
234 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
235 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
236
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
237 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
238
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
239 /* create the threads tls's array */
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
240
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
241 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
242 cycle->log);
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
243 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
244 return NGX_ERROR;
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
245 }
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
246
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
247 nthreads = 1;
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
248
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
249 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
250 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
251 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
252
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
253 /* 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
254 __isthreaded = 1;
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
255
271
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
256 ngx_threaded = 1;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
257
84
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
258 return NGX_OK;
fab4cb00fe5b nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 3
diff changeset
259 }
3
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
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
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
262 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
263 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
264 int tid;
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 pid;
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 tid = ngx_gettid();
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
268
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
269 if (tids == NULL) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
270 return ngx_pid;
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
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
273 return tids[tid];
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
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
277 ngx_int_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
278 {
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
279 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
280 return NGX_ENOMEM;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
281 }
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
282
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
283 *key = nkeys++;
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 return 0;
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
286 }
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
287
381
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
288
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
289 ngx_int_t ngx_thread_set_tls(ngx_tls_key_t key, void *value)
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
290 {
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
291 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
292 return NGX_EINVAL;
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
02a511569afb nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 379
diff changeset
295 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
296 return 0;
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
297 }
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
298
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
299
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
300 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
301 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
302 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
303 union semun op;
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 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
306 return NULL;
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
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
309 m->lock = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
310 m->log = log;
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 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
313 m->semid = -1;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
314 return m;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
315 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
316
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
317 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
318 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
319 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
320 return NULL;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
321 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
322
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
323 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
324
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
325 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
326 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
327
370
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, IPC_RMID) == -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,
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
330 "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
331 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
332
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
333 return NULL;
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
334 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
335
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
336 return m;
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
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
340 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
341 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
342 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
343 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
344 "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
345 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
346
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
347 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
348 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
349
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
350
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 271
diff changeset
351 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
352 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
353 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
354 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
355 struct sembuf op;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
356
271
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
357 if (!ngx_threaded) {
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
358 return NGX_OK;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
359 }
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
360
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
361 #if (NGX_DEBUG)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
362 if (try) {
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
363 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
364 "try lock mutex " PTR_FMT " lock:%X", 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
365 } else {
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,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
367 "lock mutex " PTR_FMT " lock:%X", 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 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
369 #endif
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
370
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
371 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
372 tries = 0;
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 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
375 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
376
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
377 if (try) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
378 return NGX_AGAIN;
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
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
381 if (ngx_freebsd_hw_ncpu > 1 && tries++ < 1000) {
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 /* 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
384
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
385 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
386 continue;
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
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
389 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
390 sched_yield();
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 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
393 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
394 continue;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
395 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
396
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
397 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
398 "mutex " PTR_FMT " lock:%X", 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
399
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
400 /*
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
401 * 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
402 * 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
403 */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
404
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
405 lock = old + 1;
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 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
408 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
409 "%d threads wait for mutex " PTR_FMT
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
410 ", while only %d 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
411 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
412 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
413 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
414
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
415 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
416
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
417 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
418 "wait mutex " PTR_FMT " lock:%X", 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
419
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
420 /*
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
421 * 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
422 * 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
423 * 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
424 * 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
425 */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
426
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
427 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
428 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
429 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
430
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
431 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
432 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
433 "semop() failed while waiting "
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
434 "on mutex " PTR_FMT, m);
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
435 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
436 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
437
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
438 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
372
c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
439 "mutex waked up " PTR_FMT " lock:%X",
c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
440 m, m->lock);
c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
441
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
442 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
443 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
444 continue;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
445 }
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 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
448
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
449 } else {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
450 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
451
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
452 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
453
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
454 /* 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
455
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
456 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
457 }
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 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
460 }
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 if (tries++ > 1000) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
463
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
464 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
465 "mutex " PTR_FMT " 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
466
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
467 /* 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
468
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
469 sched_yield();
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
470
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
471 tries = 0;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
472 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
473 }
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
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
476 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
477 "mutex " PTR_FMT " is locked, lock:%X", 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
478
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
479 return NGX_OK;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
480 }
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 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
484 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
485 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
486 struct sembuf op;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
487
271
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
488 if (!ngx_threaded) {
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
489 return NGX_OK;
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
490 }
e16dfb9b9afa nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents: 270
diff changeset
491
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
492 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
493
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
494 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
495 ngx_log_error(NGX_LOG_ALERT, m->log, 0,
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
496 "trying to unlock the free mutex " PTR_FMT, m);
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
497 return NGX_ERROR;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
498 }
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 /* free the mutex */
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
501
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
502 #if 0
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
503 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0,
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
504 "unlock mutex " PTR_FMT " lock:%X", m, old);
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
505 #endif
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
506
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
507 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
508 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
509
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
510 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
511 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
512 }
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 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
515 }
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 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
518 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
519 "mutex " PTR_FMT " 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
520
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
521 return NGX_OK;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
522 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
523
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
524 /* 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
525
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
526 old = m->lock;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
527
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
528 for ( ;; ) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
529 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
530
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
531 /* 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
532
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
533 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
534 }
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 if (old == 0) {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
537 break;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
538 }
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 /* 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
541
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
542 lock = old - 1;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
543
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
544 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
545
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
546 /* 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
547
379
73688d5d7fc3 nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents: 377
diff changeset
548 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0,
372
c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
549 "wake up mutex " PTR_FMT "", m);
c9fdfccebc49 nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
550
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
551 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
552 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
553 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
554
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 208
diff changeset
555 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
556 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
557 "semop() failed while waking up on mutex "
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
558 PTR_FMT, 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,
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
569 "mutex " PTR_FMT " 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;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
584 cv->tid = 0;
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 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
643 }
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
644
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
645 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
646 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
647 }
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
648
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
649 ngx_log_debug3(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
650 "cv " PTR_FMT " wait, kq:%d, signo:%d",
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
651 cv, 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
652
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
653 for ( ;; ) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
654 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
655
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
656 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
657 "cv " PTR_FMT " kevent: %d", cv, n);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
658
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
659 if (n == -1) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
660 err = ngx_errno;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
661 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
662 cv->log, ngx_errno,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
663 "kevent() failed while waiting condition variable "
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
664 PTR_FMT, cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
665
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
666 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
667 break;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
668 }
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 return NGX_ERROR;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
671 }
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
672
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
673 if (n == 0) {
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
674 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
675 "kevent() returned no events "
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
676 "while waiting condition variable " PTR_FMT,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
677 cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
678 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
679 }
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 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
682 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
683 "kevent() returned unexpected events: %d "
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
684 "while waiting condition variable " PTR_FMT,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
685 kev.filter, cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
686 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
687 }
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 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
690 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
691 "kevent() returned unexpected signal: %d ",
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
692 "while waiting condition variable " PTR_FMT,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
693 kev.ident, cv);
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
694 continue;
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
695 }
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 break;
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
698 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
699
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
700 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0,
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
701 "cv " PTR_FMT " is waked up", cv);
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,
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
716 "cv " PTR_FMT " to signal " PID_T_FMT " %d",
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
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
719 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
720
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents: 376
diff changeset
721 err = ngx_errno;
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents: 376
diff changeset
722
41437e4fd9b4 nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents: 376
diff changeset
723 ngx_log_error(NGX_LOG_ALERT, cv->log, err,
376
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
724 "kill() failed while signaling condition variable "
d0451e402e27 nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 375
diff changeset
725 PTR_FMT, cv);
377
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 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
728 cv->tid = -1;
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
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
731 return NGX_ERROR;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
732 }
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
733
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
734 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0,
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
735 "cv " PTR_FMT " is signaled", cv);
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
736
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
737 return NGX_OK;
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 346
diff changeset
738 }