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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef BTUPSPEEDESTIMATER_H
#define BTUPSPEEDESTIMATER_H
#include <qvaluelist.h>
#include <util/constants.h>
namespace bt
{
/**
* @author Joris Guisson
*
* Measures upload speed.
*/
class UpSpeedEstimater
{
struct Entry
{
Uint32 bytes;
TimeStamp start_time;
Uint32 duration;
bool data;
};
public:
UpSpeedEstimater();
virtual ~UpSpeedEstimater();
/**
* Start sending bytes.
* @param bytes The number of bytes
* @param rec Wether to record or not (i.e. is this data)
*/
void writeBytes(Uint32 bytes,bool rec);
/**
* The socket has finished sending bytes.
* @param bytes The number of bytes.
*/
void bytesWritten(Uint32 bytes);
/**
* Update the upload speed estimater.
*/
void update();
/// Get the upload rate
double uploadRate() const {return upload_rate;}
/// Get the protocol overhead
double protocollOverhead() const {return proto_upload_rate;}
private:
double rate(QValueList<Entry> & el);
private:
double upload_rate;
double proto_upload_rate;
Uint32 accumulated_bytes;
QValueList<Entry> outstanding_bytes;
QValueList<Entry> written_bytes;
#ifdef MEASURE_PROTO_OVERHEAD
QValueList<Entry> proto_bytes;
#endif
};
}
#endif
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