Mercurial > hg > nginx

annotate src/os/unix/ngx_thread_mutex.c @ 7660:d33e17499088

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Version bump.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 26 May 2020 22:03:00 +0300
parents 022ea0d17177
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6018
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
1
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
2 /*
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
3 * Copyright (C) Igor Sysoev
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
4 * Copyright (C) Nginx, Inc.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
5 */
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
6
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
7 #include <ngx_config.h>
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
8 #include <ngx_core.h>
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
9
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
10
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
11 /*
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
12 * All modern pthread mutex implementations try to acquire a lock
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
13 * atomically in userland before going to sleep in kernel. Some
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
14 * spins before the sleeping.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
15 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
16 * In Solaris since version 8 all mutex types spin before sleeping.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
17 * The default spin count is 1000. It can be overridden using
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
18 * _THREAD_ADAPTIVE_SPIN=100 environment variable.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
19 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
20 * In MacOSX all mutex types spin to acquire a lock protecting a mutex's
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
21 * internals. If the mutex is busy, thread calls Mach semaphore_wait().
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
22 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
23 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
24 * PTHREAD_MUTEX_NORMAL lacks deadlock detection and is the fastest
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
25 * mutex type.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
26 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
27 * Linux: No spinning. The internal name PTHREAD_MUTEX_TIMED_NP
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
28 * remains from the times when pthread_mutex_timedlock() was
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
29 * non-standard extension. Alias name: PTHREAD_MUTEX_FAST_NP.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
30 * FreeBSD: No spinning.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
31 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
32 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
33 * PTHREAD_MUTEX_ERRORCHECK is usually as fast as PTHREAD_MUTEX_NORMAL
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
34 * yet has lightweight deadlock detection.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
35 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
36 * Linux: No spinning. The internal name: PTHREAD_MUTEX_ERRORCHECK_NP.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
37 * FreeBSD: No spinning.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
38 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
39 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
40 * PTHREAD_MUTEX_RECURSIVE allows recursive locking.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
41 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
42 * Linux: No spinning. The internal name: PTHREAD_MUTEX_RECURSIVE_NP.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
43 * FreeBSD: No spinning.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
44 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
45 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
46 * PTHREAD_MUTEX_ADAPTIVE_NP spins on SMP systems before sleeping.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
47 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
48 * Linux: No deadlock detection. Dynamically changes a spin count
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
49 * for each mutex from 10 to 100 based on spin count taken
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
50 * previously.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
51 * FreeBSD: Deadlock detection. The default spin count is 2000.
6585
e511e3d581bb Fixed spelling.
Otto Kekäläinen <otto@seravo.fi>
parents: 6018
diff changeset
52 * It can be overridden using LIBPTHREAD_SPINLOOPS environment
6018
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
53 * variable or by pthread_mutex_setspinloops_np(). If a lock
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
54 * is still busy, sched_yield() can be called on both UP and
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
55 * SMP systems. The default yield loop count is zero, but
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
56 * it can be set by LIBPTHREAD_YIELDLOOPS environment
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
57 * variable or by pthread_mutex_setyieldloops_np().
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
58 * Solaris: No PTHREAD_MUTEX_ADAPTIVE_NP.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
59 * MacOSX: No PTHREAD_MUTEX_ADAPTIVE_NP.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
60 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
61 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
62 * PTHREAD_MUTEX_ELISION_NP is a Linux extension to elide locks using
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
63 * Intel Restricted Transactional Memory. It is the most suitable for
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
64 * rwlock pattern access because it allows simultaneous reads without lock.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
65 * Supported since glibc 2.18.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
66 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
67 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
68 * PTHREAD_MUTEX_DEFAULT is default mutex type.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
69 *
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
70 * Linux: PTHREAD_MUTEX_NORMAL.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
71 * FreeBSD: PTHREAD_MUTEX_ERRORCHECK.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
72 * Solaris: PTHREAD_MUTEX_NORMAL.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
73 * MacOSX: PTHREAD_MUTEX_NORMAL.
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
74 */
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
75
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
76
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
77 ngx_int_t
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
78 ngx_thread_mutex_create(ngx_thread_mutex_t *mtx, ngx_log_t *log)
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
79 {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
80 ngx_err_t err;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
81 pthread_mutexattr_t attr;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
82
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
83 err = pthread_mutexattr_init(&attr);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
84 if (err != 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
85 ngx_log_error(NGX_LOG_EMERG, log, err,
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
86 "pthread_mutexattr_init() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
87 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
88 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
89
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
90 err = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
91 if (err != 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
92 ngx_log_error(NGX_LOG_EMERG, log, err,
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
93 "pthread_mutexattr_settype"
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
94 "(PTHREAD_MUTEX_ERRORCHECK) failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
95 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
96 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
97
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
98 err = pthread_mutex_init(mtx, &attr);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
99 if (err != 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
100 ngx_log_error(NGX_LOG_EMERG, log, err,
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
101 "pthread_mutex_init() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
102 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
103 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
104
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
105 err = pthread_mutexattr_destroy(&attr);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
106 if (err != 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
107 ngx_log_error(NGX_LOG_ALERT, log, err,
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
108 "pthread_mutexattr_destroy() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
109 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
110
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
111 return NGX_OK;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
112 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
113
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
114
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
115 ngx_int_t
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
116 ngx_thread_mutex_destroy(ngx_thread_mutex_t *mtx, ngx_log_t *log)
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
117 {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
118 ngx_err_t err;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
119
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
120 err = pthread_mutex_destroy(mtx);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
121 if (err != 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
122 ngx_log_error(NGX_LOG_ALERT, log, err,
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
123 "pthread_mutex_destroy() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
124 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
125 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
126
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
127 return NGX_OK;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
128 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
129
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
130
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
131 ngx_int_t
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
132 ngx_thread_mutex_lock(ngx_thread_mutex_t *mtx, ngx_log_t *log)
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
133 {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
134 ngx_err_t err;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
135
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
136 err = pthread_mutex_lock(mtx);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
137 if (err == 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
138 return NGX_OK;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
139 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
140
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
141 ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_mutex_lock() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
142
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
143 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
144 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
145
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
146
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
147 ngx_int_t
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
148 ngx_thread_mutex_unlock(ngx_thread_mutex_t *mtx, ngx_log_t *log)
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
149 {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
150 ngx_err_t err;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
151
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
152 err = pthread_mutex_unlock(mtx);
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
153
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
154 #if 0
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
155 ngx_time_update();
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
156 #endif
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
157
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
158 if (err == 0) {
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
159 return NGX_OK;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
160 }
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
161
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
162 ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_mutex_unlock() failed");
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
163
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
164 return NGX_ERROR;
466bd63b63d1 Thread pools implementation.
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
165 }