/**
* Tencent is pleased to support the open source community by making DCache available.
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the BSD 3-Clause License (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/BSD-3-Clause
*
* 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.
*/
#ifndef _ERASETHREAD_H_
#define _ERASETHREAD_H_


#include <iostream>
#include "servant/Application.h"
#include "MKCacheGlobe.h"


/**
 * 定时作业线程类，淘汰数据
 */
class EraseThread
{
public:
    EraseThread() :_isStart(false), _isRuning(false), _isInSlaveCreating(false) {}
    ~EraseThread() {}

    /*
    *初始化
    */
    void init(const string &sConf);

    /*
    *重载配置
    */
    void reload();

    /*
    *生成线程
    */
    void createThread();

    /*
    *淘汰数据
    */
    static void* EraseData(void* pArg);



    void setStart(bool bStart)
    {
        _isStart = bStart;
    }

    /*
    *停止线程
    */
    void stop()
    {
        _isStart = false;
    }

    bool isStart()
    {
        return _isStart;
    }

    bool isRuning()
    {
        return _isRuning;
    }

    void setRuning(bool bRuning)
    {
        _isRuning = bRuning;
    }

    bool isInSlaveCreatingStatus()
    {
        return _isInSlaveCreating;
    }


protected:
    //线程启动停止标志
    bool _isStart;

    //线程当前状态
    bool _isRuning;

    bool _isInSlaveCreating;

    TC_Config _tcConf;
    string _config;

    //淘汰数据的时间间隔
    bool _enableErase;
    int _eraseInterval;

    //淘汰数据的比率，已使用chunk/总chunk
    int _eraseRatio;

    unsigned int _shmNum;

    unsigned int _maxEraseCountOneTime;

    unsigned int _eraseThreadCount;

    std::atomic<int> _activeJmemCount;

};

#endif
