forked from Mirrors/freeswitch
129 lines
4.8 KiB
C
129 lines
4.8 KiB
C
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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
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* applicable.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file apr_anylock.h
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* @brief APR-Util transparent any lock flavor wrapper
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*/
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#ifndef APR_ANYLOCK_H
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#define APR_ANYLOCK_H
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#include "apr_proc_mutex.h"
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#include "apr_thread_mutex.h"
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#include "apr_thread_rwlock.h"
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/** Structure that may contain any APR lock type */
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typedef struct apr_anylock_t {
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/** Indicates what type of lock is in lock */
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enum tm_lock {
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apr_anylock_none, /**< None */
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apr_anylock_procmutex, /**< Process-based */
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apr_anylock_threadmutex, /**< Thread-based */
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apr_anylock_readlock, /**< Read lock */
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apr_anylock_writelock /**< Write lock */
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} type;
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/** Union of all possible APR locks */
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union apr_anylock_u_t {
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apr_proc_mutex_t *pm; /**< Process mutex */
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#if APR_HAS_THREADS
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apr_thread_mutex_t *tm; /**< Thread mutex */
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apr_thread_rwlock_t *rw; /**< Read-write lock */
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#endif
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} lock;
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} apr_anylock_t;
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#if APR_HAS_THREADS
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/** Lock an apr_anylock_t structure */
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#define APR_ANYLOCK_LOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_threadmutex) \
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? apr_thread_mutex_lock((lck)->lock.tm) \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_lock((lck)->lock.pm) \
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: (((lck)->type == apr_anylock_readlock) \
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? apr_thread_rwlock_rdlock((lck)->lock.rw) \
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: (((lck)->type == apr_anylock_writelock) \
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? apr_thread_rwlock_wrlock((lck)->lock.rw) \
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: APR_EINVAL)))))
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#else /* APR_HAS_THREADS */
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#define APR_ANYLOCK_LOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_lock((lck)->lock.pm) \
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: APR_EINVAL))
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#endif /* APR_HAS_THREADS */
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#if APR_HAS_THREADS
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/** Try to lock an apr_anylock_t structure */
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#define APR_ANYLOCK_TRYLOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_threadmutex) \
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? apr_thread_mutex_trylock((lck)->lock.tm) \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_trylock((lck)->lock.pm) \
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: (((lck)->type == apr_anylock_readlock) \
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? apr_thread_rwlock_tryrdlock((lck)->lock.rw) \
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: (((lck)->type == apr_anylock_writelock) \
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? apr_thread_rwlock_trywrlock((lck)->lock.rw) \
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: APR_EINVAL)))))
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#else /* APR_HAS_THREADS */
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#define APR_ANYLOCK_TRYLOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_trylock((lck)->lock.pm) \
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: APR_EINVAL))
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#endif /* APR_HAS_THREADS */
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#if APR_HAS_THREADS
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/** Unlock an apr_anylock_t structure */
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#define APR_ANYLOCK_UNLOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_threadmutex) \
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? apr_thread_mutex_unlock((lck)->lock.tm) \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_unlock((lck)->lock.pm) \
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: ((((lck)->type == apr_anylock_readlock) || \
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((lck)->type == apr_anylock_writelock)) \
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? apr_thread_rwlock_unlock((lck)->lock.rw) \
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: APR_EINVAL))))
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#else /* APR_HAS_THREADS */
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#define APR_ANYLOCK_UNLOCK(lck) \
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(((lck)->type == apr_anylock_none) \
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? APR_SUCCESS \
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: (((lck)->type == apr_anylock_procmutex) \
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? apr_proc_mutex_unlock((lck)->lock.pm) \
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: APR_EINVAL))
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#endif /* APR_HAS_THREADS */
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#endif /* !APR_ANYLOCK_H */
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