jmutex.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* 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 2 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "jmutex.h"
#include "jmutexexception.h"
#include <errno.h>
#include <pthread.h>
namespace jthread {
Mutex::Mutex(MUTEXTYPE type_)
{
/*
pthread_mutexattr_t mutex;
pthread_mutexattr_init(&mutex);
if (type_ == FAST_MUTEX) {
pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_NORMAL);
} else if (type_ == RECURSIVE_MUTEX) {
pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_RECURSIVE);
} else if (type_ == ERROR_CHECK_MUTEX) {
pthread_mutexattr_settype(&mutex, PTHREAD_MUTEX_ERRORCHECK);
}
*/
pthread_mutex_init(&_mutex, NULL);
}
Mutex::~Mutex()
{
/*
while (pthread_mutex_destroy(&_mutex) == EBUSY) {
Lock();
Unlock();
}
*/
pthread_mutex_destroy(&_mutex);
}
void Mutex::Lock()
{
if (pthread_mutex_lock(&_mutex)) {
/*
if (errno == EDEADLK) {
throw MutexException("Error check monitor, calling thread has a ... !");
} else {
throw MutexException("Unknown monitor error !");
}
*/
}
}
void Mutex::Unlock()
{
if (pthread_mutex_unlock(&_mutex) != 0) {
if (errno == EPERM) {
throw MutexException("Error check monitor, calling thread does ... !");
} else {
throw MutexException("Unknown monitor error !");
}
}
}
bool Mutex::TryLock()
{
if (pthread_mutex_trylock(&_mutex) != 0) {
if (errno == EBUSY) {
return false;
} else {
throw MutexException("Unknown monitor error !");
}
}
return true;
}
};