mipsignalwaiter.h

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/*
    
  This file is a part of EMIPLIB, the EDM Media over IP Library.
  
  Copyright (C) 2006-2011  Hasselt University - Expertise Centre for
                      Digital Media (EDM) (http://www.edm.uhasselt.be)

  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  
  USA

*/

#ifndef MIPSIGNALWAITER_H

#define MIPSIGNALWAITER_H

#include "mipconfig.h"
#include <jthread/jmutex.h>
#if !defined(WIN32) && !defined(_WIN32_WCE)
        #include <pthread.h>
#endif // !WIN32 && !_WIN32_WCE

class EMIPLIB_IMPORTEXPORT MIPSignalWaiter
{
public:
        MIPSignalWaiter();
        ~MIPSignalWaiter();
        
        bool init();

        void destroy();

        bool waitForSignal();

        bool signal();

        bool clearSignalBuffers();

        bool isInit()                                                           { return m_init; }
private:
#ifndef WIN32
        pthread_cond_t m_cond;
        pthread_mutex_t m_mutex;
#else
        HANDLE m_eventObject;
#endif // WIN32
        bool m_init;
        jthread::JMutex m_countMutex,m_waitMutex;
        int m_count;
        bool m_isWaiting;
};

#endif // MIPSIGNALWAITER_H