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/***************************************************************************
 *   Copyright (C) November 29, 2008 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   thread.h                                            *
 *                                                                         *
 *   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.             *
 ***************************************************************************/

#ifndef _THREAD_H
#define _THREAD_H

#include <pthread.h>

template <class T>
class Thread
{
public:
    Thread()
    {
        myIsCreated = false;
        myError = 0;
    };
    ~Thread()
    {
        stop();
    };

    bool stop()
    {
        if (!myIsCreated)
            return true;

        myError = pthread_cancel(myHandle);
        join();
        myIsCreated = false;

        return myError == 0;
    };
    
    bool start()
    {
        myError = pthread_create(&myHandle, NULL, T::doThread, (void*)this);
        
        if (myError != 0)
        {
            myIsCreated = false;
            return false;
        }

        myIsCreated = true;
        return true;
    };

    bool join()
    {
        if (!myIsCreated)
            return false;

        myError = pthread_join(myHandle, NULL);

        if (myError != 0)
        {
            myIsCreated = false;
            return false;
        }

        myIsCreated = true;
        return true;
    };

    int getError()
    {
        return myError;
    };

    static void *doThread(void* ptr)
    {
        ((T*)ptr)->run();
    };

    virtual void run() { };

private:
    bool myIsCreated;
    pthread_t myHandle;
    int myError;
};

#endif  /* _THREAD_H */