线程同步

 1 ULONG _stdcall CA::AddRef()
 2 {
 3     return InterlockedIncrement(&m_ref);
 4 }
 5 
 6 ULONG _stdcall CA::Release()
 7 {
 8     if (InterlockedDecrement(&m_ref) == 0)
 9     {
10         delete m_ref;]
11         return 0;
12     }  
13     return m_ref;
14 }