Red Baron

class CDBConnPool {
public:
 int cnt;
 int      m_MaxCount;
 int      m_CurCount;

 int      m_LimitCount;

 char     m_Ip[128];
 char     m_DBName[128];
 char     m_User[128];
 char     m_Passwd[128];
 HANDLE     m_Mutex[POOL_MAX_SIZE];
 CDBConn     *m_Condb[POOL_MAX_SIZE];

public:
 CDBConnPool();
 ~CDBConnPool();

 void Create(int max_count, char *ip, char *db_name, char *user, char *passwd);
 void CreateConnPool();

 void Release();

 CDBConn *GetConnection();
 int ReturnConnection(CDBConn *conn);

};

DWORD ret = WaitForMultipleObjects(m_MaxCount,m_Mutex,false, INFINITE);

 if((ret-WAIT_OBJECT_0) >= m_MaxCount || (ret-WAIT_OBJECT_0) < 0)
  return NULL;
 m_CurCount--;

 return m_Condb[ret-WAIT_OBJECT_0];

if (conn == NULL) return -1;
 for(int n = 0;n < m_MaxCount;n++){
  if(m_Condb[n] == conn){
   conn->CloseQuery();
   cnt++;
   m_CurCount++;
   ReleaseMutex(m_Mutex[n]);
  }
 }
 return 0;
}