完成端口

BOOL Create(int nMaxConcurrency = 0) {
m_hIOCP = CreateIoCompletionPort(
INVALID_HANDLE_VALUE, NULL, 0, nMaxConcurrency);
chASSERT(m_hIOCP != NULL);
return(m_hIOCP != NULL);
}

BOOL AssociateDevice(HANDLE hDevice, ULONG_PTR CompKey) {
BOOL fOk = (CreateIoCompletionPort(hDevice, m_hIOCP, CompKey, 0)
== m_hIOCP);
chASSERT(fOk);
return(fOk);
}

BOOL AssociateSocket(SOCKET hSocket, ULONG_PTR CompKey) {      return(AssociateDevice((HANDLE) hSocket, CompKey));   }

CreateIoCompletionPort

BOOL GetStatus(ULONG_PTR* pCompKey, PDWORD pdwNumBytes,OVERLAPPED** ppo, DWORD dwMilliseconds = INFINITE) {return(GetQueuedCompletionStatus(m_hIOCP, pdwNumBytes,pCompKey, ppo, dwMilliseconds));}

BOOL PostStatus(ULONG_PTR CompKey, DWORD dwNumBytes = 0,OVERLAPPED* po = NULL) {BOOL fOk = PostQueuedCompletionStatus(m_hIOCP, dwNumBytes, CompKey, po);chASSERT(fOk);return(fOk);}