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Reserve memory for file data buffers

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Chocobo1 2019-10-27 21:37:23 +08:00
parent c73d698718
commit e262b86c44
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2 changed files with 8 additions and 3 deletions
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1
src/base/bittorrent/session.cpp
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@ -3507,6 +3507,7 @@ void Session::handleTorrentResumeDataReady(TorrentHandle *const torrent, const l
// isn't cheap too. // isn't cheap too.
QByteArray out; QByteArray out;
out.reserve(1024 * 1024); // most fastresume file sizes are under 1 MB
lt::bencode(std::back_inserter(out), data); lt::bencode(std::back_inserter(out), data);
const QString filename = QString("%1.fastresume").arg(torrent->hash()); const QString filename = QString("%1.fastresume").arg(torrent->hash());

10
src/base/bittorrent/torrenthandle.cpp
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@ -1581,11 +1581,15 @@ bool TorrentHandle::saveTorrentFile(const QString &path)
#endif #endif
const lt::entry torrentEntry = torrentCreator.generate(); const lt::entry torrentEntry = torrentCreator.generate();
QVector<char> out; QByteArray out;
out.reserve(1024 * 1024); // most torrent file sizes are under 1 MB
lt::bencode(std::back_inserter(out), torrentEntry); lt::bencode(std::back_inserter(out), torrentEntry);
if (out.isEmpty())
return false;
QFile torrentFile(path); QFile torrentFile(path);
if (!out.empty() && torrentFile.open(QIODevice::WriteOnly)) if (torrentFile.open(QIODevice::WriteOnly))
return (torrentFile.write(&out[0], out.size()) == out.size()); return (torrentFile.write(out) == out.size());
return false; return false;
} }