| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, Version |
| * 2.0 (the "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * etch_mutex.h -- thread mutex implementation |
| * currently wraps APR mutex. |
| */ |
| |
| #ifndef _ETCH_MUTEX_H_ |
| #define _ETCH_MUTEX_H_ |
| |
| #include "etch_errno.h" |
| #include "etch_mem.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define ETCH_MUTEX_NESTED 0x1 |
| #define ETCH_MUTEX_UNNESTED 0x2 |
| |
| /** |
| * etch mutex type |
| */ |
| typedef struct etch_mutex_t etch_mutex_t; |
| |
| typedef etch_mutex_t etch_mutex; |
| typedef int (*etch_mutex_hookproc)(int action, etch_mutex* mutex); |
| |
| /** |
| * create a new etch mutex instance. |
| * @param address where the new created mutex will be stored. |
| * @param flags mutex type ETCH_MUTEX_NESTED or ETCH_MUTEX_UNNESTED. |
| * @param pool memory pool where the memory will be allocated from. |
| * @return status |
| */ |
| etch_status_t etch_mutex_create(etch_mutex_t** mutex, unsigned int flags, etch_pool_t* pool); |
| |
| /** |
| * acquire the lock for the given mutex. |
| * @param mutex |
| * @return status |
| */ |
| etch_status_t etch_mutex_lock(etch_mutex_t* mutex); |
| |
| /** |
| * try to acquire the lock for the given mutex. |
| * @param mutex |
| * @return status |
| */ |
| etch_status_t etch_mutex_trylock(etch_mutex_t* mutex); |
| |
| /** |
| * release the lock for the given mutex. |
| * @param mutex |
| * @return status |
| */ |
| etch_status_t etch_mutex_unlock(etch_mutex_t* mutex); |
| |
| /** |
| * destroy the given mutex. |
| * @param mutex |
| */ |
| etch_status_t etch_mutex_destroy(etch_mutex_t* mutex); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* #ifndef ETCH_MUTEX_H */ |