| /* Copyright 2000-2005 The Apache Software Foundation or its licensors, as |
| * applicable. |
| * |
| * Licensed 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. |
| */ |
| |
| /** |
| * @file apr_anylock.h |
| * @brief APR-Util transparent any lock flavor wrapper |
| */ |
| #ifndef APR_ANYLOCK_H |
| #define APR_ANYLOCK_H |
| |
| #include "apr_proc_mutex.h" |
| #include "apr_thread_mutex.h" |
| #include "apr_thread_rwlock.h" |
| |
| /** Structure that may contain any APR lock type */ |
| typedef struct apr_anylock_t { |
| /** Indicates what type of lock is in lock */ |
| enum tm_lock { |
| apr_anylock_none, /**< None */ |
| apr_anylock_procmutex, /**< Process-based */ |
| apr_anylock_threadmutex, /**< Thread-based */ |
| apr_anylock_readlock, /**< Read lock */ |
| apr_anylock_writelock /**< Write lock */ |
| } type; |
| /** Union of all possible APR locks */ |
| union apr_anylock_u_t { |
| apr_proc_mutex_t *pm; /**< Process mutex */ |
| #if APR_HAS_THREADS |
| apr_thread_mutex_t *tm; /**< Thread mutex */ |
| apr_thread_rwlock_t *rw; /**< Read-write lock */ |
| #endif |
| } lock; |
| } apr_anylock_t; |
| |
| #if APR_HAS_THREADS |
| |
| /** Lock an apr_anylock_t structure */ |
| #define APR_ANYLOCK_LOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_threadmutex) \ |
| ? apr_thread_mutex_lock((lck)->lock.tm) \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_lock((lck)->lock.pm) \ |
| : (((lck)->type == apr_anylock_readlock) \ |
| ? apr_thread_rwlock_rdlock((lck)->lock.rw) \ |
| : (((lck)->type == apr_anylock_writelock) \ |
| ? apr_thread_rwlock_wrlock((lck)->lock.rw) \ |
| : APR_EINVAL))))) |
| |
| #else /* APR_HAS_THREADS */ |
| |
| #define APR_ANYLOCK_LOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_lock((lck)->lock.pm) \ |
| : APR_EINVAL)) |
| |
| #endif /* APR_HAS_THREADS */ |
| |
| #if APR_HAS_THREADS |
| |
| /** Try to lock an apr_anylock_t structure */ |
| #define APR_ANYLOCK_TRYLOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_threadmutex) \ |
| ? apr_thread_mutex_trylock((lck)->lock.tm) \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_trylock((lck)->lock.pm) \ |
| : (((lck)->type == apr_anylock_readlock) \ |
| ? apr_thread_rwlock_tryrdlock((lck)->lock.rw) \ |
| : (((lck)->type == apr_anylock_writelock) \ |
| ? apr_thread_rwlock_trywrlock((lck)->lock.rw) \ |
| : APR_EINVAL))))) |
| |
| #else /* APR_HAS_THREADS */ |
| |
| #define APR_ANYLOCK_TRYLOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_trylock((lck)->lock.pm) \ |
| : APR_EINVAL)) |
| |
| #endif /* APR_HAS_THREADS */ |
| |
| #if APR_HAS_THREADS |
| |
| /** Unlock an apr_anylock_t structure */ |
| #define APR_ANYLOCK_UNLOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_threadmutex) \ |
| ? apr_thread_mutex_unlock((lck)->lock.tm) \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_unlock((lck)->lock.pm) \ |
| : ((((lck)->type == apr_anylock_readlock) || \ |
| ((lck)->type == apr_anylock_writelock)) \ |
| ? apr_thread_rwlock_unlock((lck)->lock.rw) \ |
| : APR_EINVAL)))) |
| |
| #else /* APR_HAS_THREADS */ |
| |
| #define APR_ANYLOCK_UNLOCK(lck) \ |
| (((lck)->type == apr_anylock_none) \ |
| ? APR_SUCCESS \ |
| : (((lck)->type == apr_anylock_procmutex) \ |
| ? apr_proc_mutex_unlock((lck)->lock.pm) \ |
| : APR_EINVAL)) |
| |
| #endif /* APR_HAS_THREADS */ |
| |
| #endif /* !APR_ANYLOCK_H */ |