class CClientContext  //To store and manage client related information
{
private:
     
     OVERLAPPED        *m_pol;
     WSABUF            *m_pwbuf;
     
     int               m_nTotalBytes;
     int               m_nSentBytes;
     
     SOCKET            m_Socket;  //accepted socket
     int               m_nOpCode; //will be used by the worker thread to decide what operation to perform
     char              m_szBuffer[MAX_BUFFER_LEN];
     
public:
     
     void SetOpCode(int n){m_nOpCode = n;}
     int GetOpCode(){return m_nOpCode;}
     void SetTotalBytes(int n){m_nTotalBytes = n;}
     int GetTotalBytes(){return m_nTotalBytes;}
     void SetSentBytes(int n){m_nSentBytes = n;}
     void IncrSentBytes(int n){m_nSentBytes += n;}
     int GetSentBytes() {return m_nSentBytes;}
     void SetSocket(SOCKET s){m_Socket = s;}
     SOCKET GetSocket(){return m_Socket;}
     void SetBuffer(char *szBuffer){strcpy(m_szBuffer, szBuffer);}
     void GetBuffer(char *szBuffer){strcpy(szBuffer, m_szBuffer);}
     void ZeroBuffer(){ZeroMemory(m_szBuffer, MAX_BUFFER_LEN);}
     void SetWSABUFLength(int nLength){m_pwbuf->len = nLength;}
     int GetWSABUFLength(){return m_pwbuf->len;}
     WSABUF* GetWSABUFPtr(){return m_pwbuf;}
     OVERLAPPED* GetOVERLAPPEDPtr(){return m_pol;}
     void ResetWSABUF()
	 {ZeroBuffer();
       m_pwbuf->buf = m_szBuffer;
        m_pwbuf->len = MAX_BUFFER_LEN;
     }

     CClientContext()
     {
        m_pol = new OVERLAPPED;
        m_pwbuf = new WSABUF;
        ZeroMemory(m_pol, sizeof(OVERLAPPED));
        m_Socket =  SOCKET_ERROR;
        ZeroMemory(m_szBuffer, MAX_BUFFER_LEN);
        m_pwbuf->buf = m_szBuffer;  //这句话的意思是不是说 将m_szBuffer 指针给了buf 
	     m_pwbuf->len = MAX_BUFFER_LEN;    //也就是说 实际上WSABUF里的数组指针指向的是m_szBuffer 实际接收的数据是 在m_szBuffer数组里 问题
        m_nOpCode = 0;
        m_nTotalBytes = 0;
        m_nSentBytes = 0;
     }
     

};
std::vector<CClientContext *> g_ClientContext;
bool InitializeIOCP();
bool Initialize();
void CleanUp();
void DeInitialize();
DWORD WINAPI AcceptThread(LPVOID lParam);
void AcceptConnection(SOCKET ListenSocket);
bool AssociateWithIOCP(CClientContext   *pClientContext);
DWORD WINAPI WorkerThread(LPVOID lpParam);
void WriteToConsole(char *szFormat, ...);
void AddToClientList(CClientContext   *pClientContext);
void RemoveFromClientListAndFreeMemory(CClientContext   *pClientContext);
void CleanClientList();
int GetNoOfProcessors();
#endif

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