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/*
Copyright (C) 2006 Grame
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Grame Research Laboratory, 9 rue du Garet, 69001 Lyon - France
grame@grame.fr
*/
#ifndef __JackPosixMutex__
#define __JackPosixMutex__
#include <pthread.h>
#include <stdio.h>
#include <assert.h>
#include "JackError.h"
namespace Jack
{
/*!
\brief Mutex abstraction.
*/
class JackPosixMutex
{
protected:
pthread_mutex_t fMutex;
public:
JackPosixMutex()
{
// Use recursive mutex
pthread_mutexattr_t mutex_attr;
int res;
res = pthread_mutexattr_init(&mutex_attr);
assert(res == 0);
res = pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_RECURSIVE);
assert(res == 0);
res = pthread_mutex_init(&fMutex, &mutex_attr);
assert(res == 0);
res = pthread_mutexattr_destroy(&mutex_attr);
assert(res == 0);
}
virtual ~JackPosixMutex()
{
pthread_mutex_destroy(&fMutex);
}
void Lock()
{
int res = pthread_mutex_lock(&fMutex);
if (res != 0)
jack_error("JackPosixMutex::Lock res = %d", res);
}
bool Trylock()
{
return (pthread_mutex_trylock(&fMutex) == 0);
}
void Unlock()
{
int res = pthread_mutex_unlock(&fMutex);
if (res != 0)
jack_error("JackPosixMutex::Unlock res = %d", res);
}
};
} // namespace
#endif
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