Evolution.h

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/*
    Copyright 2005-2010 Intel Corporation.  All Rights Reserved.

    This file is part of Threading Building Blocks.

    Threading Building Blocks is free software; you can redistribute it
    and/or modify it under the terms of the GNU General Public License
    version 2 as published by the Free Software Foundation.

    Threading Building Blocks 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 Threading Building Blocks; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    As a special exception, you may use this file as part of a free software
    library without restriction.  Specifically, if other files instantiate
    templates or use macros or inline functions from this file, or you compile
    this file and link it with other files to produce an executable, this
    file does not by itself cause the resulting executable to be covered by
    the GNU General Public License.  This exception does not however
    invalidate any other reasons why the executable file might be covered by
    the GNU General Public License.
*/

#ifndef __EVOLUTION_H__
#define __EVOLUTION_H__

#include "Board.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

#define WIN32_LEAN_AND_MEAN

#include "tbb/task_scheduler_init.h"
#include "tbb/blocked_range.h"
#include "tbb/parallel_for.h"
#include "tbb/tick_count.h"

#ifndef _CONSOLE
#include <windows.h>
using namespace System::Threading;
#else
typedef unsigned int Int32;
#endif

void UpdateState(Matrix * m_matrix, char * dest ,int begin, int end);

#ifndef _CONSOLE
public ref class Evolution abstract
#else
class Evolution
#endif
{
public:
    Evolution( Matrix *m,                
               BoardPtr board              
             ) : m_matrix(m), m_board(board), 
                 m_size(m_matrix->height * m_matrix->width), m_done(false)
    {
        m_dest = new char[m_size];
        is_paused = false;
#ifdef _CONSOLE
        m_serial_time = 0;
#endif
    }

    virtual ~Evolution()
    {
        delete[] m_dest;
    }

#ifndef _CONSOLE
    virtual void Run() = 0;
#else
    virtual void Run(double execution_time, int nthread) = 0;
#endif

    virtual void Quit() { m_done = true; }
    
    virtual void Step() = 0;

    virtual void SetPause(bool condition)
    {
        if ( condition == true )
            is_paused = true;
        else
            is_paused = false;
    }
    
protected:
    void UpdateMatrix();

protected:
    Matrix*         m_matrix;       
    char*           m_dest;         
    BoardPtr        m_board;        
    int             m_size;         
    volatile bool   m_done;         
    Int32           m_nIteration;   
    volatile bool   is_paused;      
    

#ifndef _CONSOLE
    static volatile double m_serial_time = 0;

    static System::Threading::AutoResetEvent    ^m_evt_start_serial = gcnew AutoResetEvent(false),
                                                ^m_evt_start_parallel = gcnew AutoResetEvent(false);
#else
    double m_serial_time;
#endif
};

#ifndef _CONSOLE
public ref class SequentialEvolution: public Evolution
#else
class SequentialEvolution: public Evolution
#endif
{
public:
    SequentialEvolution(Matrix *m, BoardPtr board)
                       : Evolution(m, board)
    {}
#ifndef _CONSOLE        
    virtual void Run() override;
    virtual void Step() override;
#else
    virtual void Run(double execution_time, int nthread);
    virtual void Step();
#endif

};

#ifndef _CONSOLE
public ref class ParallelEvolution: public Evolution
#else
class ParallelEvolution: public Evolution
#endif
{
public:

    ParallelEvolution(Matrix *m, BoardPtr board)
                     : Evolution(m, board),
                       m_parallel_time(0)
    {
        // instantiate a task_scheduler_init object and save a pointer to it
        m_pInit = NULL;
    }
    
    ~ParallelEvolution()
    {
        if (m_pInit != NULL)
            delete m_pInit;
    }
#ifndef _CONSOLE
    virtual void Run() override;
    virtual void Step() override;
#else
    virtual void Run(double execution_time, int nthread);
    virtual void Step();
#endif
    

private:
    tbb::task_scheduler_init* m_pInit;

    double m_parallel_time;
};

#endif