事件对象编程示范

事件对象编程示例

#pragma once

#include <windows.h>

class CDaemonThread
{
public:
 CDaemonThread(void);
 ~CDaemonThread(void);

 static DWORD WINAPI ThreadProc(LPVOID lpParameter);

protected:
 HANDLE m_hThread;
 HANDLE m_hEvent;
};

CDaemonThread::CDaemonThread(void)
:m_hThread(NULL),
m_hEvent(NULL)
{
 m_hEvent =  CreateEvent(NULL,TRUE,FALSE,NULL);
 if (m_hEvent != NULL)
 {
  m_hThread = CreateThread(NULL,0,CDaemonThread::ThreadProc,this,0,NULL);
 }
}

CDaemonThread::~CDaemonThread(void)
{
 if (m_hEvent != NULL)
 {
  SetEvent(m_hEvent);

  if (m_hThread != NULL)
  {
   if (WaitForSingleObject(m_hThread,1000) == WAIT_TIMEOUT)
    TerminateThread(m_hThread,0);
   CloseHandle(m_hThread);
  }
  
  CloseHandle(m_hEvent);
 }
}

DWORD WINAPI CDaemonThread::ThreadProc(LPVOID lpParameter)
{
 CDaemonThread* pThis = (CDaemonThread*)lpParameter;
 DWORD dwRet = 0;
 while(TRUE)
 {
  dwRet = WaitForSingleObject(pThis->m_hEvent,100);
  if (dwRet == WAIT_OBJECT_0)
   return 0;
 }
 return 0;
}