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apr_thread_mutex.h

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00001 /* Copyright 2000-2004 The Apache Software Foundation
00002  *
00003  * Licensed under the Apache License, Version 2.0 (the "License");
00004  * you may not use this file except in compliance with the License.
00005  * You may obtain a copy of the License at
00006  *
00007  *     http://www.apache.org/licenses/LICENSE-2.0
00008  *
00009  * Unless required by applicable law or agreed to in writing, software
00010  * distributed under the License is distributed on an "AS IS" BASIS,
00011  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00012  * See the License for the specific language governing permissions and
00013  * limitations under the License.
00014  */
00015 
00016 #ifndef APR_THREAD_MUTEX_H
00017 #define APR_THREAD_MUTEX_H
00018 
00024 #include "apr.h"
00025 #include "apr_errno.h"
00026 
00027 #ifdef __cplusplus
00028 extern "C" {
00029 #endif /* __cplusplus */
00030 
00031 #if APR_HAS_THREADS || defined(DOXYGEN)
00032 
00040 typedef struct apr_thread_mutex_t apr_thread_mutex_t;
00041 
00042 #define APR_THREAD_MUTEX_DEFAULT  0x0   
00043 #define APR_THREAD_MUTEX_NESTED   0x1   
00044 #define APR_THREAD_MUTEX_UNNESTED 0x2   
00046 /* Delayed the include to avoid a circular reference */
00047 #include "apr_pools.h"
00048 
00064 APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
00065                                                   unsigned int flags,
00066                                                   apr_pool_t *pool);
00072 APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex);
00073 
00081 APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex);
00082 
00087 APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex);
00088 
00093 APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex);
00094 
00099 APR_POOL_DECLARE_ACCESSOR(thread_mutex);
00100 
00101 #endif /* APR_HAS_THREADS */
00102 
00105 #ifdef __cplusplus
00106 }
00107 #endif
00108 
00109 #endif  /* ! APR_THREAD_MUTEX_H */

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