POSIX_Mutex.cpp

Go to the documentation of this file.

/*
 *POSIX_Mutex.cpp
 *
 *  This file is part of the HausmiSEP project
 *
 *  Copyright (C) 2012, 2013 Marco Alvarado (malvcr@gmail.com)
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <HSEP/Mutex.h>

namespace HSEP {

    Mutex::Mutex(bool pShared) {
           pthread_mutexattr_t vMutexAttr;
        pthread_mutexattr_init(&vMutexAttr);
           if (pShared) {
               pthread_mutexattr_setpshared(&vMutexAttr,PTHREAD_PROCESS_SHARED);
           }
           else {
               pthread_mutexattr_setpshared(&vMutexAttr,PTHREAD_PROCESS_PRIVATE);
           }
           pthread_mutex_init(&aMutexHandler,&vMutexAttr);
        pthread_mutexattr_destroy(&vMutexAttr);
    }

    Mutex::~Mutex() {
        pthread_mutex_destroy (&aMutexHandler);
    }

    void Mutex::acquire() {
          pthread_mutex_lock(&aMutexHandler);
    }

    void Mutex::release() {
        pthread_mutex_unlock(&aMutexHandler);
    }

    PosixExclusiveScope::PosixExclusiveScope(pthread_mutex_t* pMutex) {
        aMutex = pMutex;
        pthread_mutex_lock(aMutex);
    }
    PosixExclusiveScope::~PosixExclusiveScope() {
           pthread_mutex_unlock(aMutex);
       }

} // HSEP namespace