1 /*
2 * Bittorrent Client using Qt and libtorrent.
3 * Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
4 * Copyright (C) 2011 Christophe Dumez <chris@qbittorrent.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 *
20 * In addition, as a special exception, the copyright holders give permission to
21 * link this program with the OpenSSL project's "OpenSSL" library (or with
22 * modified versions of it that use the same license as the "OpenSSL" library),
23 * and distribute the linked executables. You must obey the GNU General Public
24 * License in all respects for all of the code used other than "OpenSSL". If you
25 * modify file(s), you may extend this exception to your version of the file(s),
26 * but you are not obligated to do so. If you do not wish to do so, delete this
27 * exception statement from your version.
28 */
29
30 #include "speedmonitor.h"
31
SpeedMonitor()32 SpeedMonitor::SpeedMonitor()
33 : m_speedSamples(MAX_SAMPLES)
34 {
35 }
36
addSample(const SpeedSample & sample)37 void SpeedMonitor::addSample(const SpeedSample &sample)
38 {
39 if (m_speedSamples.size() >= MAX_SAMPLES)
40 {
41 m_sum -= m_speedSamples.front();
42 }
43
44 m_speedSamples.push_back(sample);
45 m_sum += sample;
46 }
47
average() const48 SpeedSampleAvg SpeedMonitor::average() const
49 {
50 if (m_speedSamples.empty())
51 return {};
52
53 const qreal k = qreal(1.) / m_speedSamples.size();
54 return {m_sum.download * k, m_sum.upload * k};
55 }
56
reset()57 void SpeedMonitor::reset()
58 {
59 m_sum = SpeedSample();
60 m_speedSamples.clear();
61 }
62