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
24static 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
38APR_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
63APR_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
77APR_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    apr_time_t then;
83    struct timespec abstime;
84
85    then = apr_time_now() + timeout;
86    abstime.tv_sec = apr_time_sec(then);
87    abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */
88
89    rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime);
90#ifdef HAVE_ZOS_PTHREADS
91    if (rv) {
92        rv = errno;
93    }
94#endif
95    if (ETIMEDOUT == rv) {
96        return APR_TIMEUP;
97    }
98    return rv;
99}
100
101
102APR_DECLARE(apr_status_t) apr_thread_cond_signal(apr_thread_cond_t *cond)
103{
104    apr_status_t rv;
105
106    rv = pthread_cond_signal(&cond->cond);
107#ifdef HAVE_ZOS_PTHREADS
108    if (rv) {
109        rv = errno;
110    }
111#endif
112    return rv;
113}
114
115APR_DECLARE(apr_status_t) apr_thread_cond_broadcast(apr_thread_cond_t *cond)
116{
117    apr_status_t rv;
118
119    rv = pthread_cond_broadcast(&cond->cond);
120#ifdef HAVE_ZOS_PTHREADS
121    if (rv) {
122        rv = errno;
123    }
124#endif
125    return rv;
126}
127
128APR_DECLARE(apr_status_t) apr_thread_cond_destroy(apr_thread_cond_t *cond)
129{
130    return apr_pool_cleanup_run(cond->pool, cond, thread_cond_cleanup);
131}
132
133APR_POOL_IMPLEMENT_ACCESSOR(thread_cond)
134
135#endif /* APR_HAS_THREADS */
136