77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/*! \file pimutex.h
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* \brief Mutex
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*/
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/*
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PIP - Platform Independent Primitives
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Mutex
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Copyright (C) 2013 Ivan Pelipenko peri4ko@gmail.com
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef PIMUTEX_H
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#define PIMUTEX_H
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#include "piincludes.h"
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#ifndef WINDOWS
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# include <pthread.h>
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#endif
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class PIP_EXPORT PIMutex
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{
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public:
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#ifndef WINDOWS
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PIMutex() {
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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//pthread_mutexattr_settype(&attr, PTHREAD_PROCESS_SHARED);
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pthread_mutex_init(&mutex, &attr);
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pthread_mutexattr_destroy(&attr);
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}
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~PIMutex() {pthread_mutex_destroy(&mutex);}
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void lock() {pthread_mutex_lock(&mutex);}
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void unlock() {pthread_mutex_unlock(&mutex);}
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bool tryLock() {return (pthread_mutex_trylock(&mutex) == 0);}
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#else
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PIMutex() {mutex = CreateMutex(0, false, 0);}
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~PIMutex() {CloseHandle(mutex);}
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void lock() {WaitForSingleObject(mutex, INFINITE);}
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void unlock() {ReleaseMutex(mutex);}
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bool tryLock() {return (WaitForSingleObject(mutex, 0) == WAIT_OBJECT_0);}
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#endif
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private:
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#ifndef WINDOWS
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pthread_mutex_t mutex;
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#else
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void * mutex;
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#endif
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};
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class PIP_EXPORT PIMutexLocker
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{
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public:
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PIMutexLocker(PIMutex * m): mutex(m) {mutex->lock();}
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PIMutexLocker(PIMutex & m): mutex(&m) {mutex->lock();}
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~PIMutexLocker() {mutex->unlock();}
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private:
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PIMutex * mutex;
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};
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#endif // PIMUTEX_H
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