40 windows_40_Thread_Mutex 线程 - 互斥

windows_40_Thread_Mutex 线程 - 互斥

// windows_39_Thread_Mutex.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include "windows.h"

//互斥排队等候问题，谁先等候谁先执行
HANDLE g_hMutex = NULL;

DWORD WINAPI ThreadProc1( LPVOID pParam )
{
  while (1)
  {
    //等候互斥量
    WaitForSingleObject( g_hMutex ,INFINITE);
    printf( "ThreadProc1--------\n" );
    Sleep( 500 );
    //释放互斥量
    ReleaseMutex( g_hMutex );
  }
  return 0;
}
DWORD WINAPI ThreadProc2( LPVOID pParam )
{
  while (1)
  {
    //等候互斥量
    WaitForSingleObject( g_hMutex,INFINITE );
    printf( "-------------ThreadProc2\n" );
    Sleep( 500 );
    //释放互斥量
    ReleaseMutex( g_hMutex );
  }
  return 0;
}
DWORD WINAPI ThreadProc3( LPVOID pParam )
{
  while (1)
  {
    //等候互斥量
    WaitForSingleObject( g_hMutex,INFINITE );
    printf( "-------ThreadProc3-----------\n" );
    Sleep( 500 );
    //释放互斥量
    ReleaseMutex( g_hMutex );
  }
  return 0;
}
void Create( )
{
  DWORD nThreadID = 0;
  HANDLE hThread[3] = { NULL };
  hThread[0] = CreateThread( NULL, 0, ThreadProc1, NULL, 0, &nThreadID );
  hThread[1] = CreateThread( NULL, 0, ThreadProc2 , NULL, 0, &nThreadID  );
  hThread[2] = CreateThread( NULL, 0, ThreadProc3 , NULL, 0, &nThreadID  );
}
int _tmain(int argc, _TCHAR* argv[])
{
  //创建互斥
  g_hMutex = CreateMutex( NULL, FALSE, NULL );

  Create( );
  getchar( );
  //关闭互斥
  CloseHandle( g_hMutex );
	return 0;
}

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