qBittorrent/src/base/bittorrent/speedmonitor.cpp

62 lines
2.1 KiB
C++
Raw Normal View History

/*
2015-04-19 18:17:47 +03:00
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
* Copyright (C) 2011 Christophe Dumez <chris@qbittorrent.org>
*
* 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.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
2015-04-19 18:17:47 +03:00
#include "speedmonitor.h"
SpeedMonitor::SpeedMonitor()
: m_speedSamples(MAX_SAMPLES)
{
}
2015-04-19 18:17:47 +03:00
void SpeedMonitor::addSample(const SpeedSample &sample)
{
2020-11-16 10:02:11 +03:00
if (m_speedSamples.size() >= MAX_SAMPLES)
{
2015-04-19 18:17:47 +03:00
m_sum -= m_speedSamples.front();
}
m_speedSamples.push_back(sample);
m_sum += sample;
2015-04-19 18:17:47 +03:00
}
SpeedSampleAvg SpeedMonitor::average() const
{
if (m_speedSamples.empty())
2019-02-14 20:16:42 +03:00
return {};
2015-04-19 18:17:47 +03:00
const qreal k = qreal(1.) / m_speedSamples.size();
2019-02-14 20:16:42 +03:00
return {m_sum.download * k, m_sum.upload * k};
2015-04-19 18:17:47 +03:00
}
void SpeedMonitor::reset()
{
m_sum = SpeedSample();
m_speedSamples.clear();
}