1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "apr.h"
18
19 #if APR_HAS_THREADS
20
21 #include "apr_arch_thread_mutex.h"
22 #include "apr_arch_thread_cond.h"
23
thread_cond_cleanup(void * data)24 static apr_status_t thread_cond_cleanup(void *data)
25 {
26 apr_thread_cond_t *cond = (apr_thread_cond_t *)data;
27 apr_status_t rv;
28
29 rv = pthread_cond_destroy(&cond->cond);
30 #ifdef HAVE_ZOS_PTHREADS
31 if (rv) {
32 rv = errno;
33 }
34 #endif
35 return rv;
36 }
37
apr_thread_cond_create(apr_thread_cond_t ** cond,apr_pool_t * pool)38 APR_DECLARE(apr_status_t) apr_thread_cond_create(apr_thread_cond_t **cond,
39 apr_pool_t *pool)
40 {
41 apr_thread_cond_t *new_cond;
42 apr_status_t rv;
43
44 new_cond = apr_palloc(pool, sizeof(apr_thread_cond_t));
45
46 new_cond->pool = pool;
47
48 if ((rv = pthread_cond_init(&new_cond->cond, NULL))) {
49 #ifdef HAVE_ZOS_PTHREADS
50 rv = errno;
51 #endif
52 return rv;
53 }
54
55 apr_pool_cleanup_register(new_cond->pool,
56 (void *)new_cond, thread_cond_cleanup,
57 apr_pool_cleanup_null);
58
59 *cond = new_cond;
60 return APR_SUCCESS;
61 }
62
apr_thread_cond_wait(apr_thread_cond_t * cond,apr_thread_mutex_t * mutex)63 APR_DECLARE(apr_status_t) apr_thread_cond_wait(apr_thread_cond_t *cond,
64 apr_thread_mutex_t *mutex)
65 {
66 apr_status_t rv;
67
68 rv = pthread_cond_wait(&cond->cond, &mutex->mutex);
69 #ifdef HAVE_ZOS_PTHREADS
70 if (rv) {
71 rv = errno;
72 }
73 #endif
74 return rv;
75 }
76
apr_thread_cond_timedwait(apr_thread_cond_t * cond,apr_thread_mutex_t * mutex,apr_interval_time_t timeout)77 APR_DECLARE(apr_status_t) apr_thread_cond_timedwait(apr_thread_cond_t *cond,
78 apr_thread_mutex_t *mutex,
79 apr_interval_time_t timeout)
80 {
81 apr_status_t rv;
82 if (timeout < 0) {
83 rv = pthread_cond_wait(&cond->cond, &mutex->mutex);
84 #ifdef HAVE_ZOS_PTHREADS
85 if (rv) {
86 rv = errno;
87 }
88 #endif
89 }
90 else {
91 apr_time_t then;
92 struct timespec abstime;
93
94 then = apr_time_now() + timeout;
95 abstime.tv_sec = apr_time_sec(then);
96 abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */
97
98 rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime);
99 #ifdef HAVE_ZOS_PTHREADS
100 if (rv) {
101 rv = errno;
102 }
103 #endif
104 if (ETIMEDOUT == rv) {
105 return APR_TIMEUP;
106 }
107 }
108 return rv;
109 }
110
111
apr_thread_cond_signal(apr_thread_cond_t * cond)112 APR_DECLARE(apr_status_t) apr_thread_cond_signal(apr_thread_cond_t *cond)
113 {
114 apr_status_t rv;
115
116 rv = pthread_cond_signal(&cond->cond);
117 #ifdef HAVE_ZOS_PTHREADS
118 if (rv) {
119 rv = errno;
120 }
121 #endif
122 return rv;
123 }
124
apr_thread_cond_broadcast(apr_thread_cond_t * cond)125 APR_DECLARE(apr_status_t) apr_thread_cond_broadcast(apr_thread_cond_t *cond)
126 {
127 apr_status_t rv;
128
129 rv = pthread_cond_broadcast(&cond->cond);
130 #ifdef HAVE_ZOS_PTHREADS
131 if (rv) {
132 rv = errno;
133 }
134 #endif
135 return rv;
136 }
137
apr_thread_cond_destroy(apr_thread_cond_t * cond)138 APR_DECLARE(apr_status_t) apr_thread_cond_destroy(apr_thread_cond_t *cond)
139 {
140 return apr_pool_cleanup_run(cond->pool, cond, thread_cond_cleanup);
141 }
142
143 APR_POOL_IMPLEMENT_ACCESSOR(thread_cond)
144
145 #endif /* APR_HAS_THREADS */
146