WindowsThread.cpp

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// ****************************************************************************
// This file is part of the Integrating Vision Toolkit (IVT).
//
// The IVT is maintained by the Karlsruhe Institute of Technology (KIT)
// (www.kit.edu) in cooperation with the company Keyetech (www.keyetech.de).
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// ****************************************************************************
// ****************************************************************************
// Filename:  WindowsThread.cpp
// Author:    Pedram Azad
// Date:      2004
// ****************************************************************************


// ****************************************************************************
// Includes
// ****************************************************************************

#include <new> // for explicitly using correct new/delete operators on VC DSPs

#include "WindowsThread.h"

#include <windows.h>



// ****************************************************************************
// ThreadRoutine
// ****************************************************************************

unsigned long __stdcall ThreadRoutine(void *pParameter)
{
        const int nRet = ((CThreadBase *) pParameter)->_ThreadMethod();
        ((CThreadBase *) pParameter)->m_bCompletelyDone = true;
        return (unsigned long) nRet;
}


// ****************************************************************************
// Constructor / Destructor
// ****************************************************************************

CWindowsThread::CWindowsThread()
{
        m_hThreadHandle = NULL;
        m_hFinishedEvent = NULL;
}

CWindowsThread::~CWindowsThread()
{
        Stop();
}


// ****************************************************************************
// Methods
// ****************************************************************************

void CWindowsThread::_Start()
{
        if (m_hThreadHandle)
                return;

        m_hThreadHandle = CreateThread(NULL, 0, ThreadRoutine, this, 0, NULL);
        m_hFinishedEvent = CreateEvent(0, FALSE, FALSE, 0);
}

void CWindowsThread::_Stop()
{
        if (!m_hThreadHandle)
                return;
        
        // wait and kill thread after timeout
        WaitForSingleObject(m_hFinishedEvent, m_nKillThreadTimeout);

        CloseHandle(m_hThreadHandle);
        CloseHandle(m_hFinishedEvent);

        m_hThreadHandle = NULL;
        m_hFinishedEvent = NULL;
}

void CWindowsThread::ThreadMethodFinished()
{
        if (m_hFinishedEvent)
                SetEvent(m_hFinishedEvent);
}