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/* Copyright (c) 2008 PrimeBase Technologies GmbH, Germany
*
* PrimeBase Media Stream for MySQL
*
* 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
*
* Original author: Paul McCullagh (H&G2JCtL)
* Continued development: Barry Leslie
*
* 2007-06-06
*
* CORE SYSTEM:
* A basic mutex (mutual exclusion) object.
*
*/
#ifndef __CSMUTEX_H__
#define __CSMUTEX_H__
#include <pthread.h>
#include "CSDefs.h"
class CSMutex {
public:
CSMutex();
virtual ~CSMutex();
virtual void lock();
virtual void unlock();
friend class CSLock;
friend class CSSync;
private:
pthread_mutex_t iMutex;
};
class CSLock : public CSMutex {
public:
CSLock();
virtual ~CSLock();
virtual void lock();
virtual void unlock();
virtual bool haveLock();
friend class CSSync;
private:
CSThread *iLockingThread;
int iLockCount;
};
class CSSync : public CSLock {
public:
CSSync();
virtual ~CSSync();
/* Wait for resources on the object
* to be freed.
*
* This function may only be called
* if the thread has already locked the
* object.
*/
virtual void wait();
/* Wait for a certain amount of time, in
* milli-seconds (1/1000th of a second).
*/
void wait(time_t mill_sec);
/*
* Wakeup any waiters.
*/
virtual void wakeup();
private:
pthread_cond_t iCondition;
};
#endif
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