ThreadContext.h

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/* ========================================================================
 * Copyright (c) 2006,
 * Institute for Computer Graphics and Vision
 * Graz University of Technology
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * Neither the name of the Graz University of Technology nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * ========================================================================
 * PROJECT: OpenTracker
 * ======================================================================== */
/* ======================================================================= */

#ifndef _THREADCONTEXT_H
#define _THREADCONTEXT_H

#include "../dllinclude.h"

#include "Node.h"
#include "Module.h"
#include "NodeFactoryContainer.h"
#include "VideoUser.h"
#include "Context.h"

#include <ace/Condition_Thread_Mutex.h>
#include <ace/Thread_Mutex.h>
#include <ace/Synch.h>

//class ACE_Thread_Mutex;
//class ACE_Condition_Thread_Mutex;
//class ACE_Condition<ACE_Thread_mutex>;


namespace ot {

    class OPENTRACKER_API ThreadContext : public Context
    {
        typedef ACE_Thread_Mutex thread_mutex_type;
        typedef ACE_Mutex mutex_type;
        typedef ACE_Condition<ACE_Mutex > condition_type;
        
        // members
    protected:
        enum ActionType {
            POLL = 0,
            RATE = 1,
            DEMAND = 2,
            QUIT = 255
        };

        int action_type;
        double action_rate;
        bool inloop;

        void * thread;
        
        thread_mutex_type * thread_mutex;
        mutex_type * action_mutex;
        condition_type * action_cond;
        mutex_type * loopend_mutex;
        condition_type * loopend_cond;

        
        // methods        
    public:

        ThreadContext( int init = 0 );

        virtual ~ThreadContext();

    protected:
        void thlock();
        void thunlock();    
        void runDispatcher();

    public:
        virtual void run();

        virtual void runAtRate(double rate);

        virtual void runOnDemand();

    protected:
        static void thread_func( void * data )
        {
            ((ThreadContext*)data)->runDispatcher();
        };

        friend class ConfigurationParser;
    };

} // namespace ot

#endif

/*
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 *   End of ThreadContext.h
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