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 #include "apr_private.h"
19 #include "apr_general.h"
20 #include "apr_strings.h"
21 #include "apr_arch_thread_mutex.h"
22 #include "apr_portable.h"
23
thread_mutex_cleanup(void * data)24 static apr_status_t thread_mutex_cleanup(void *data)
25 {
26 apr_thread_mutex_t *mutex = (apr_thread_mutex_t *)data;
27
28 NXMutexFree(mutex->mutex);
29 return APR_SUCCESS;
30 }
31
apr_thread_mutex_create(apr_thread_mutex_t ** mutex,unsigned int flags,apr_pool_t * pool)32 APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
33 unsigned int flags,
34 apr_pool_t *pool)
35 {
36 apr_thread_mutex_t *new_mutex = NULL;
37
38 /* XXX: Implement _UNNESTED flavor and favor _DEFAULT for performance
39 */
40 if (flags & APR_THREAD_MUTEX_UNNESTED) {
41 return APR_ENOTIMPL;
42 }
43 new_mutex = (apr_thread_mutex_t *)apr_pcalloc(pool, sizeof(apr_thread_mutex_t));
44
45 if(new_mutex ==NULL) {
46 return APR_ENOMEM;
47 }
48 new_mutex->pool = pool;
49
50 new_mutex->mutex = NXMutexAlloc(NX_MUTEX_RECURSIVE, 0, NULL);
51
52 if(new_mutex->mutex == NULL)
53 return APR_ENOMEM;
54
55 apr_pool_cleanup_register(new_mutex->pool, new_mutex,
56 (void*)thread_mutex_cleanup,
57 apr_pool_cleanup_null);
58 *mutex = new_mutex;
59 return APR_SUCCESS;
60 }
61
apr_thread_mutex_lock(apr_thread_mutex_t * mutex)62 APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex)
63 {
64 NXLock(mutex->mutex);
65 return APR_SUCCESS;
66 }
67
apr_thread_mutex_trylock(apr_thread_mutex_t * mutex)68 APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex)
69 {
70 if (!NXTryLock(mutex->mutex))
71 return APR_EBUSY;
72 return APR_SUCCESS;
73 }
74
apr_thread_mutex_unlock(apr_thread_mutex_t * mutex)75 APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex)
76 {
77 NXUnlock(mutex->mutex);
78 return APR_SUCCESS;
79 }
80
apr_thread_mutex_destroy(apr_thread_mutex_t * mutex)81 APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex)
82 {
83 apr_status_t stat;
84 if ((stat = thread_mutex_cleanup(mutex)) == APR_SUCCESS) {
85 apr_pool_cleanup_kill(mutex->pool, mutex, thread_mutex_cleanup);
86 return APR_SUCCESS;
87 }
88 return stat;
89 }
90
91 APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex)
92
93