apr_thread_mutex.h

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00001 /* Licensed to the Apache Software Foundation (ASF) under one or more
00002  * contributor license agreements.  See the NOTICE file distributed with
00003  * this work for additional information regarding copyright ownership.
00004  * The ASF licenses this file to You under the Apache License, Version 2.0
00005  * (the "License"); you may not use this file except in compliance with
00006  * the License.  You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #ifndef APR_THREAD_MUTEX_H
00018 #define APR_THREAD_MUTEX_H
00019 
00025 #include "apr.h"
00026 #include "apr_errno.h"
00027 
00028 #ifdef __cplusplus
00029 extern "C" {
00030 #endif /* __cplusplus */
00031 
00032 #if APR_HAS_THREADS || defined(DOXYGEN)
00033 
00041 typedef struct apr_thread_mutex_t apr_thread_mutex_t;
00042 
00043 #define APR_THREAD_MUTEX_DEFAULT  0x0   
00044 #define APR_THREAD_MUTEX_NESTED   0x1   
00045 #define APR_THREAD_MUTEX_UNNESTED 0x2   
00047 /* Delayed the include to avoid a circular reference */
00048 #include "apr_pools.h"
00049 
00065 APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex,
00066                                                   unsigned int flags,
00067                                                   apr_pool_t *pool);
00073 APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex);
00074 
00082 APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex);
00083 
00088 APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex);
00089 
00094 APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex);
00095 
00100 APR_POOL_DECLARE_ACCESSOR(thread_mutex);
00101 
00102 #endif /* APR_HAS_THREADS */
00103 
00106 #ifdef __cplusplus
00107 }
00108 #endif
00109 
00110 #endif  /* ! APR_THREAD_MUTEX_H */

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