/* Copyright (C) 2014 InfiniDB, Inc.

   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; version 2 of
   the License.

   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., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

#ifndef IOMANAGER_H
#define IOMANAGER_H
// $Id: iomanager.h 655 2008-07-08 16:42:54Z jrodriguez $
//
// C++ Interface: iomanager
//
// Description:
//
//
// Author: Jason Rodriguez <jrodriguez@calpont.com>
//
//
//

/**
	@author Jason Rodriguez <jrodriguez@calpont.com>
*/

#include <pthread.h>
#include <string>

#include "writeengine.h"
#include "configcpp.h"
#include "brm.h"
#include "fileblockrequestqueue.h"
#include "filebuffermgr.h"

namespace dbbc
{

class ioManager
{

public:

    ioManager(FileBufferMgr& fbm, fileBlockRequestQueue& fbrq, int thrCount,
              int bsPerRead);
    //ioManager(FileBufferMgr& fbm, int thrCount);
    ~ioManager();
    int readerCount() const
    {
        return fThreadCount;
    }
    fileRequest* getNextRequest();
    void go(void);
    void stop();
    FileBufferMgr& fileBufferManager()
    {
        return fIOMfbMgr;
    }
    config::Config* configPtr()
    {
        return fConfig;
    }
    BRM::LBID_t lbidLookup(BRM::LBID_t lbid,
                           BRM::VER_t verid,
                           bool vbFlag,
                           BRM::OID_t& oid,
                           uint32_t& offset);
    void buildOidFileName(const BRM::OID_t oid, char* file_name);

    uint32_t getExtentSize()
    {
        return fdbrm.getExtentSize();
    }

    uint32_t blocksPerRead;

    bool IOTrace() const
    {
        return fIOTrace;
    }

private:

    FileBufferMgr& fIOMfbMgr;
    fileBlockRequestQueue& fIOMRequestQueue;
    int fThreadCount;
    pthread_t fPoppertid;
    pthread_t fThreadArr[256];
    int createReaders();
    config::Config* fConfig;
    BRM::DBRM fdbrm;
    WriteEngine::FileOp fFileOp;

    // do not implement
    ioManager();
    ioManager(const ioManager& iom);
    const ioManager& operator=(const ioManager& iom);
    bool fIOTrace;
};

}
#endif
// vim:ts=4 sw=4:
