mutex使用

mutex的使用类。

 

class CMutexEx
{
public:
 CMutexEx() { m_hMutex = CreateMutex(NULL, FALSE, _T("TRANSACTION")); }
 virtual ~CMutexEx() { Leave(); }
 void Enter()
 {
  if(m_hMutex)
  {
   WaitForSingleObject(m_hMutex, INFINITE);
  }
 }
 BOOL TryEnter(DWORD dwMilliseconds)
 {
  if(m_hMutex)
  {
   if (WAIT_OBJECT_0 == WaitForSingleObject(m_hMutex, dwMilliseconds))
   {
    return TRUE;
   }
  }
  return FALSE;
 }

 void Leave()
 {
  if (m_hMutex)
  {
   ReleaseMutex(m_hMutex);
   CloseHandle(m_hMutex);
  }
 }
private:
 HANDLE m_hMutex;
};