f-stack/app/micro_thread/mt_session.h

/**
 * Tencent is pleased to support the open source community by making MSEC available.
 *
 * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the GNU General Public License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. You may 
 * obtain a copy of the License at
 *
 *     https://opensource.org/licenses/GPL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the 
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */


/**
 *  @file mt_session.h
 *  @info ΢<EFBFBD>̵߳<EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD>Ự<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӹ<EFBFBD><EFBFBD><EFBFBD>һsession<EFBFBD><EFBFBD>Ϣ
 *  @time 20130924
 **/

#ifndef __MT_SESSION_H__
#define __MT_SESSION_H__

#include "hash_list.h"

namespace NS_MICRO_THREAD {

class MicroThread;
class IMtConnection;

enum SESSION_FLAG
{
    SESSION_IDLE    = 0,    ///< SESSION δ<><CEB4><EFBFBD><EFBFBD>hash<73><68><EFBFBD><EFBFBD>
    SESSION_INUSE   = 1,    ///< SESSION <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬
};

/**
 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>session<EFBFBD>ӿڶ<EFBFBD><EFBFBD><EFBFBD>, <EFBFBD><EFBFBD><EFBFBD><EFBFBD>session<EFBFBD><EFBFBD>ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>thread,action<EFBFBD><EFBFBD>
 */
class ISession : public HashKey
{
public:

    /**
     * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     */
    ISession() : _session_id(0), _session_flg(0), _thread(NULL), _connection(NULL) {};
    virtual ~ISession();

public:

    /**
     * @brief <EFBFBD>ỰID<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
     */
    void SetSessionId(int id) {
        _session_id = id;    
    };
    int GetSessionId() {
        return _session_id;
    };

    /**
     * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̵߳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
     */
    MicroThread* GetOwnerThread(){
        return _thread;
    };
    void SetOwnerThread(MicroThread* thread) {
        _thread = thread;
    };

    /**
     * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
     */
    IMtConnection* GetSessionConn(){
        return _connection;
    };
    void SetSessionConn(IMtConnection* conn) {
        _connection = conn;
    };

    /**
     * @brief <EFBFBD>Ựflag<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
     */
    void SetSessionFlag(int flag) {
        _session_flg = flag;    
    };
    int GetSessionFlag() {
        return _session_flg;
    };

    /**
     *  @brief <EFBFBD>ڵ<EFBFBD>Ԫ<EFBFBD>ص<EFBFBD>hash<EFBFBD>㷨, <EFBFBD><EFBFBD>ȡkey<EFBFBD><EFBFBD>hashֵ
     *  @return <EFBFBD>ڵ<EFBFBD>Ԫ<EFBFBD>ص<EFBFBD>hashֵ
     */
    virtual uint32_t HashValue(){
        return _session_id;
    }; 

    /**
     *  @brief <EFBFBD>ڵ<EFBFBD>Ԫ<EFBFBD>ص<EFBFBD>cmp<EFBFBD><EFBFBD><EFBFBD><EFBFBD>, ͬһͰID<EFBFBD><EFBFBD>, <EFBFBD><EFBFBD>key<EFBFBD>Ƚ<EFBFBD>
     *  @return <EFBFBD>ڵ<EFBFBD>Ԫ<EFBFBD>ص<EFBFBD>hashֵ
     */
    virtual int HashCmp(HashKey* rhs){
        return this->_session_id - (int)rhs->HashValue();
    };         

protected:

    int  _session_id;               // <20>Ựid<69><64>Ϣ
    int  _session_flg;              // <20><>¼session״̬ 0 -<2D><><EFBFBD><EFBFBD>hash<73><68>, 1 -hash<73><68><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    MicroThread* _thread;           // <20>Ự<EFBFBD><E1BBB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD>session  
    IMtConnection* _connection;     // <20>Ự<EFBFBD><E1BBB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
};

/**
 * @brief ȫ<EFBFBD>ֵ<EFBFBD>session<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ
 */
class SessionMgr
{
public:

    /**
     * @brief <EFBFBD>Ự<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ȫ<EFBFBD>ֹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>
     * @return ȫ<EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
     */
    static SessionMgr* Instance (void);

    /**
     * @brief ȫ<EFBFBD>ֵ<EFBFBD>ɾ<EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>
     */
    static void Destroy();

    /**
     * @brief <EFBFBD><EFBFBD>ȡsessionid
     * @return ȫ<EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
     */
    int GetSessionId(void) {
        _curr_session++;
        if (!_curr_session) {
            _curr_session++;
        }
        return _curr_session;
    };

    /**
     * @brief Session<EFBFBD><EFBFBD><EFBFBD>ݴ洢
     */
    int InsertSession(ISession* session);

    /**
     * @brief <EFBFBD><EFBFBD>ѯsession<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     */
    ISession* FindSession(int session_id);

    /**
     * @brief ɾ<EFBFBD><EFBFBD>session<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     */
    void RemoveSession(int session_id);

    /**
     * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
     */
    ~SessionMgr();
    
private:

    /**
     * @brief <EFBFBD><EFBFBD>Ϣbuff<EFBFBD>Ĺ<EFBFBD><EFBFBD>캯<EFBFBD><EFBFBD>
     */
    SessionMgr();

    static SessionMgr * _instance;          ///<  <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    int       _curr_session;                ///<  session<6F><6E><EFBFBD><EFBFBD>
    HashList* _hash_map;                    ///<  <20><>sessionid hash<73>洢
};

}

#endif