85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/*
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* Copyright (c) 2005, Eric Crahen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef __ZTFASTRECURSIVELOCK_H__
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#define __ZTFASTRECURSIVELOCK_H__
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#include "zthread/NonCopyable.h"
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#include <pthread.h>
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namespace ZThread {
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/**
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* @class FastRecursiveLock
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*
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* @author Eric Crahen <http://www.code-foo.com>
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* @date <2003-07-16T23:27:14-0400>
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* @version 2.2.0
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*
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* This implementation of a FastRecursiveLock uses the recursive mutex
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* that linux pthreads provides.
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*/
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class FastRecursiveLock : private NonCopyable {
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pthread_mutex_t _mtx;
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public:
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inline FastRecursiveLock() {
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static const pthread_mutexattr_t attr = { PTHREAD_MUTEX_RECURSIVE_NP };
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pthread_mutex_init(&_mtx, &attr);
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}
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inline ~FastRecursiveLock() {
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pthread_mutex_destroy(&_mtx);
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}
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inline void acquire() {
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pthread_mutex_lock(&_mtx);
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}
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inline void release() {
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pthread_mutex_unlock(&_mtx);
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}
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inline bool tryAcquire(unsigned long timeout=0) {
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return (pthread_mutex_trylock(&_mtx) == 0);
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}
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}; /* FastRecursiveLock */
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} // namespace ZThread
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#endif
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