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Merge pull request #2110 from sorokin/o1-torrent-speed-monitor

O(1) torrent speed monitor
adaptive-webui-19844
sledgehammer999 10 years ago
parent
commit
ea486d45c9
  1. 106
      src/qtlibtorrent/torrentspeedmonitor.cpp

106
src/qtlibtorrent/torrentspeedmonitor.cpp

@ -36,25 +36,82 @@
using namespace libtorrent; using namespace libtorrent;
namespace {
template<class T> struct Sample { template<class T> struct Sample {
Sample(const T down = 0, const T up = 0) : download(down), upload(up) {} Sample()
: download()
, upload()
{}
Sample(T download, T upload)
: download(download)
, upload(upload)
{}
template <typename U>
explicit Sample(Sample<U> other)
: download(static_cast<U>(other.download))
, upload(static_cast<U>(other.upload))
{}
T download; T download;
T upload; T upload;
}; };
template <typename T>
Sample<T>& operator+=(Sample<T>& lhs, Sample<T> const& rhs) {
lhs.download += rhs.download;
lhs.upload += rhs.upload;
return lhs;
}
template <typename T>
Sample<T>& operator-=(Sample<T>& lhs, Sample<T> const& rhs) {
lhs.download -= rhs.download;
lhs.upload -= rhs.upload;
return lhs;
}
template <typename T>
Sample<T> operator+(Sample<T> const& lhs, Sample<T> const& rhs) {
return Sample<T>(lhs.download + rhs.download, lhs.upload + rhs.upload);
}
template <typename T>
Sample<T> operator-(Sample<T> const& lhs, Sample<T> const& rhs) {
return Sample<T>(lhs.download - rhs.download, lhs.upload - rhs.upload);
}
template <typename T>
Sample<T> operator*(Sample<T> const& lhs, T rhs) {
return Sample<T>(lhs.download * rhs, lhs.upload * rhs);
}
template <typename T>
Sample<T> operator*(T lhs,Sample<T> const& rhs) {
return Sample<T>(lhs * rhs.download, lhs * rhs.upload);
}
template <typename T>
Sample<T> operator/(Sample<T> const& lhs, T rhs) {
return Sample<T>(lhs.download / rhs, lhs.upload / rhs);
}
}
class SpeedSample { class SpeedSample {
public: public:
SpeedSample() {} SpeedSample() {}
void addSample(int speedDL, int speedUL); void addSample(Sample<int> const& item);
Sample<qreal> average() const; Sample<qreal> average() const;
void clear();
private: private:
static const int max_samples = 30; static const int max_samples = 30;
private: private:
QList<Sample<int> > m_speedSamples; QList<Sample<int> > m_speedSamples;
Sample<long long> m_sum;
}; };
TorrentSpeedMonitor::TorrentSpeedMonitor(QBtSession* session) TorrentSpeedMonitor::TorrentSpeedMonitor(QBtSession* session)
@ -68,11 +125,14 @@ TorrentSpeedMonitor::TorrentSpeedMonitor(QBtSession* session)
TorrentSpeedMonitor::~TorrentSpeedMonitor() TorrentSpeedMonitor::~TorrentSpeedMonitor()
{} {}
void SpeedSample::addSample(int speedDL, int speedUL) void SpeedSample::addSample(Sample<int> const& item)
{ {
m_speedSamples << Sample<int>(speedDL, speedUL); m_speedSamples.push_back(item);
if (m_speedSamples.size() > max_samples) m_sum += Sample<long long>(item);
m_speedSamples.removeFirst(); if (m_speedSamples.size() > max_samples) {
m_sum -= Sample<long long>(m_speedSamples.front());
m_speedSamples.pop_front();
}
} }
Sample<qreal> SpeedSample::average() const Sample<qreal> SpeedSample::average() const
@ -80,21 +140,7 @@ Sample<qreal> SpeedSample::average() const
if (m_speedSamples.empty()) if (m_speedSamples.empty())
return Sample<qreal>(); return Sample<qreal>();
qlonglong sumDL = 0; return Sample<qreal>(m_sum) * (1. / m_speedSamples.size());
qlonglong sumUL = 0;
foreach (const Sample<int>& s, m_speedSamples) {
sumDL += s.download;
sumUL += s.upload;
}
const qreal numSamples = m_speedSamples.size();
return Sample<qreal>(sumDL/numSamples, sumUL/numSamples);
}
void SpeedSample::clear()
{
m_speedSamples.clear();
} }
void TorrentSpeedMonitor::removeSamples(const QString &hash) void TorrentSpeedMonitor::removeSamples(const QString &hash)
@ -110,10 +156,14 @@ void TorrentSpeedMonitor::removeSamples(const QTorrentHandle& h) {
qlonglong TorrentSpeedMonitor::getETA(const QString &hash, const libtorrent::torrent_status &status) const qlonglong TorrentSpeedMonitor::getETA(const QString &hash, const libtorrent::torrent_status &status) const
{ {
if (QTorrentHandle::is_paused(status) || !m_samples.contains(hash)) if (QTorrentHandle::is_paused(status))
return MAX_ETA;
QHash<QString, SpeedSample>::const_iterator i = m_samples.find(hash);
if (i == m_samples.end())
return MAX_ETA; return MAX_ETA;
const Sample<qreal> speed_average = m_samples[hash].average(); const Sample<qreal> speed_average = i->average();
if (QTorrentHandle::is_seed(status)) { if (QTorrentHandle::is_seed(status)) {
if (!speed_average.upload) if (!speed_average.upload)
@ -141,8 +191,10 @@ void TorrentSpeedMonitor::statsReceived(const stats_alert &stats)
{ {
Q_ASSERT(stats.interval >= 1000); Q_ASSERT(stats.interval >= 1000);
int speedDL = static_cast<int>(static_cast<long long>(stats.transferred[stats_alert::download_payload]) * 1000 / stats.interval); Sample<int> transferred(stats.transferred[stats_alert::download_payload],
int speedUL = static_cast<int>(static_cast<long long>(stats.transferred[stats_alert::upload_payload]) * 1000 / stats.interval); stats.transferred[stats_alert::upload_payload]);
Sample<int> normalized = Sample<int>(Sample<long long>(transferred) * 1000LL / static_cast<long long>(stats.interval));
m_samples[misc::toQString(stats.handle.info_hash())].addSample(speedDL, speedUL); m_samples[misc::toQString(stats.handle.info_hash())].addSample(normalized);
} }

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