SocketServer.hpp
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上传日期:2022-05-23
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- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef SOCKET_SERVER_HPP
- #define SOCKET_SERVER_HPP
- #include <NdbTCP.h>
- #include <NdbMutex.h>
- #include <NdbThread.h>
- #include <Vector.hpp>
- extern "C" void* sessionThread_C(void*);
- extern "C" void* socketServerThread_C(void*);
- /**
- * Socket Server
- */
- class SocketServer {
- public:
- /**
- * A Session
- */
- class Session {
- public:
- virtual ~Session() {}
- virtual void runSession(){}
- virtual void stopSession(){ m_stop = true; }
- protected:
- friend class SocketServer;
- friend void* sessionThread_C(void*);
- Session(NDB_SOCKET_TYPE sock): m_socket(sock)
- {
- DBUG_ENTER("SocketServer::Session");
- DBUG_PRINT("enter",("NDB_SOCKET: %d", m_socket));
- m_stop = m_stopped = false;
- DBUG_VOID_RETURN;
- }
-
- bool m_stop; // Has the session been ordered to stop?
- bool m_stopped; // Has the session stopped?
-
- NDB_SOCKET_TYPE m_socket;
- };
-
- /**
- * A service i.e. a session factory
- */
- class Service {
- public:
- virtual ~Service(){}
-
- /**
- * Returned Session will be ran in own thread
- *
- * To manage threads self, just return NULL
- */
- virtual Session * newSession(NDB_SOCKET_TYPE theSock) = 0;
- virtual void stopSessions(){}
- };
-
- /**
- * Constructor / Destructor
- */
- SocketServer(int maxSessions = 32);
- ~SocketServer();
-
- /**
- * Setup socket and bind it
- * then close the socket
- * Returns true if succeding in binding
- */
- static bool tryBind(unsigned short port, const char * intface = 0);
- /**
- * Setup socket
- * bind & listen
- * Returns false if no success
- */
- bool setup(Service *, unsigned short port, const char * pinterface = 0);
-
- /**
- * start/stop the server
- */
- void startServer();
- void stopServer();
-
- /**
- * stop sessions
- *
- * Note: Implies stopServer
- */
- void stopSessions(bool wait = false);
-
- void foreachSession(void (*f)(Session*, void*), void *data);
- private:
- struct SessionInstance {
- Service * m_service;
- Session * m_session;
- NdbThread * m_thread;
- };
- struct ServiceInstance {
- Service * m_service;
- NDB_SOCKET_TYPE m_socket;
- };
- MutexVector<SessionInstance> m_sessions;
- MutexVector<ServiceInstance> m_services;
- unsigned m_maxSessions;
-
- void doAccept();
- void checkSessions();
- void startSession(SessionInstance &);
-
- /**
- * Note, this thread is only used when running interactive
- *
- */
- bool m_stopThread;
- struct NdbThread * m_thread;
- NdbLockable m_threadLock;
- void doRun();
- friend void* socketServerThread_C(void*);
- friend void* sessionThread_C(void*);
- };
- #endif