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perf: avoid std::string temporaries in sessionLoadTorrent() (#3165)

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This commit is contained in:
Charles Kerr 2022-05-31 10:53:46 -05:00 committed by GitHub
parent d1030b58b1
commit d9f70f51dc
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 12 additions and 10 deletions
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7
libtransmission/session.cc
View file

@ -2045,14 +2045,11 @@ static void sessionLoadTorrents(struct sessionLoadTorrentsData* const data)
auto const path = tr_pathbuf{ dirname_sv, "/"sv, name };
// is a magnet link?
if (!tr_ctorSetMetainfoFromFile(data->ctor, std::string{ path }, nullptr))
if (!tr_ctorSetMetainfoFromFile(data->ctor, path.sv(), nullptr))
{
if (auto buf = std::vector<char>{}; tr_loadFile(path, buf))
{
tr_ctorSetMetainfoFromMagnetLink(
data->ctor,
std::string{ std::data(buf), std::size(buf) }.c_str(),
nullptr);
tr_ctorSetMetainfoFromMagnetLink(data->ctor, std::string_view{ std::data(buf), std::size(buf) }, nullptr);
}
}

11
libtransmission/torrent-ctor.cc
View file

@ -66,7 +66,7 @@ struct tr_ctor
****
***/
bool tr_ctorSetMetainfoFromFile(tr_ctor* ctor, std::string const& filename, tr_error** error)
bool tr_ctorSetMetainfoFromFile(tr_ctor* ctor, std::string_view filename, tr_error** error)
{
if (std::empty(filename))
{
@ -97,11 +97,16 @@ bool tr_ctorSetMetainfo(tr_ctor* ctor, char const* metainfo, size_t len, tr_erro
return ctor->metainfo.parseBenc(contents_sv, error);
}
bool tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, char const* magnet_link, tr_error** error)
bool tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, std::string_view magnet_link, tr_error** error)
{
ctor->torrent_filename.clear();
ctor->metainfo = {};
return ctor->metainfo.parseMagnet(magnet_link != nullptr ? magnet_link : "", error);
return ctor->metainfo.parseMagnet(magnet_link, error);
}
bool tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, char const* magnet_link, tr_error** error)
{
return tr_ctorSetMetainfoFromMagnetLink(ctor, std::string_view{ magnet_link != nullptr ? magnet_link : "" }, error);
}
char const* tr_ctorGetSourceFile(tr_ctor const* ctor)

4
libtransmission/torrent.h
View file

@ -774,8 +774,8 @@ tr_peer_id_t const& tr_torrentGetPeerId(tr_torrent* tor);
tr_torrent_metainfo tr_ctorStealMetainfo(tr_ctor* ctor);
bool tr_ctorSetMetainfoFromFile(tr_ctor* ctor, std::string const& filename, tr_error** error);
bool tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, std::string const& filename, tr_error** error);
bool tr_ctorSetMetainfoFromFile(tr_ctor* ctor, std::string_view filename, tr_error** error);
bool tr_ctorSetMetainfoFromMagnetLink(tr_ctor* ctor, std::string_view filename, tr_error** error);
void tr_ctorSetLabels(tr_ctor* ctor, tr_quark const* labels, size_t n_labels);
tr_torrent::labels_t const& tr_ctorGetLabels(tr_ctor const* ctor);