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Avoid blocking call when changing libtorrent session settings

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We don't really need to get currently used settings pack in order to apply changes to session settings. It is enough to apply settings pack that contains only updated settings.

PR #17989.
This commit is contained in:
Vladimir Golovnev 2022-11-09 08:02:34 +03:00 committed by GitHub
parent 2e4431f0b8
commit 6c9c40fd7c
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 42 additions and 49 deletions
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8
src/base/bittorrent/portforwarderimpl.cpp
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@ -107,10 +107,10 @@ void PortForwarderImpl::removePorts(const QString &profile)
void PortForwarderImpl::start()
{
lt::settings_pack settingsPack = m_provider->get_settings();
lt::settings_pack settingsPack;
settingsPack.set_bool(lt::settings_pack::enable_upnp, true);
settingsPack.set_bool(lt::settings_pack::enable_natpmp, true);
m_provider->apply_settings(settingsPack);
m_provider->apply_settings(std::move(settingsPack));
for (auto profileIter = m_portProfiles.begin(); profileIter != m_portProfiles.end(); ++profileIter)
{
@ -129,10 +129,10 @@ void PortForwarderImpl::start()
void PortForwarderImpl::stop()
{
lt::settings_pack settingsPack = m_provider->get_settings();
lt::settings_pack settingsPack;
settingsPack.set_bool(lt::settings_pack::enable_upnp, false);
settingsPack.set_bool(lt::settings_pack::enable_natpmp, false);
m_provider->apply_settings(settingsPack);
m_provider->apply_settings(std::move(settingsPack));
// don't clear m_portProfiles so a later `start()` call can restore the port forwardings
for (auto profileIter = m_portProfiles.begin(); profileIter != m_portProfiles.end(); ++profileIter)

74
src/base/bittorrent/sessionimpl.cpp
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@ -1066,25 +1066,25 @@ void SessionImpl::adjustLimits()
{
if (isQueueingSystemEnabled())
{
lt::settings_pack settingsPack = m_nativeSession->get_settings();
adjustLimits(settingsPack);
m_nativeSession->apply_settings(settingsPack);
lt::settings_pack settingsPack;
// Internally increase the queue limits to ensure that the magnet is started
settingsPack.set_int(lt::settings_pack::active_downloads, adjustLimit(maxActiveDownloads()));
settingsPack.set_int(lt::settings_pack::active_limit, adjustLimit(maxActiveTorrents()));
m_nativeSession->apply_settings(std::move(settingsPack));
}
}
void SessionImpl::applyBandwidthLimits()
{
lt::settings_pack settingsPack = m_nativeSession->get_settings();
applyBandwidthLimits(settingsPack);
m_nativeSession->apply_settings(settingsPack);
lt::settings_pack settingsPack;
settingsPack.set_int(lt::settings_pack::download_rate_limit, downloadSpeedLimit());
settingsPack.set_int(lt::settings_pack::upload_rate_limit, uploadSpeedLimit());
m_nativeSession->apply_settings(std::move(settingsPack));
}
void SessionImpl::configure()
{
lt::settings_pack settingsPack = m_nativeSession->get_settings();
loadLTSettings(settingsPack);
m_nativeSession->apply_settings(settingsPack);
m_nativeSession->apply_settings(loadLTSettings());
configureComponents();
m_deferredConfigureScheduled = false;
@ -1430,10 +1430,11 @@ void SessionImpl::endStartup(ResumeSessionContext *context)
void SessionImpl::initializeNativeSession()
{
const std::string peerId = lt::generate_fingerprint(PEER_ID, QBT_VERSION_MAJOR, QBT_VERSION_MINOR, QBT_VERSION_BUGFIX, QBT_VERSION_BUILD);
lt::settings_pack pack = loadLTSettings();
lt::settings_pack pack;
const std::string peerId = lt::generate_fingerprint(PEER_ID, QBT_VERSION_MAJOR, QBT_VERSION_MINOR, QBT_VERSION_BUGFIX, QBT_VERSION_BUILD);
pack.set_str(lt::settings_pack::peer_fingerprint, peerId);
pack.set_bool(lt::settings_pack::listen_system_port_fallback, false);
pack.set_str(lt::settings_pack::user_agent, USER_AGENT.toStdString());
pack.set_bool(lt::settings_pack::use_dht_as_fallback, false);
@ -1450,8 +1451,7 @@ void SessionImpl::initializeNativeSession()
pack.set_bool(lt::settings_pack::enable_set_file_valid_data, true);
#endif
loadLTSettings(pack);
lt::session_params sessionParams {pack, {}};
lt::session_params sessionParams {std::move(pack), {}};
#ifdef QBT_USES_LIBTORRENT2
switch (diskIOType())
{
@ -1509,28 +1509,14 @@ void SessionImpl::processBannedIPs(lt::ip_filter &filter)
}
}
void SessionImpl::adjustLimits(lt::settings_pack &settingsPack) const
int SessionImpl::adjustLimit(const int limit) const
{
// Internally increase the queue limits to ensure that the magnet is started
const auto adjustLimit = [this](const int limit) -> int
{
if (limit <= -1)
return limit;
// check for overflow: (limit + m_extraLimit) < std::numeric_limits<int>::max()
return (m_extraLimit < (std::numeric_limits<int>::max() - limit))
? (limit + m_extraLimit)
: std::numeric_limits<int>::max();
};
settingsPack.set_int(lt::settings_pack::active_downloads, adjustLimit(maxActiveDownloads()));
settingsPack.set_int(lt::settings_pack::active_limit, adjustLimit(maxActiveTorrents()));
}
void SessionImpl::applyBandwidthLimits(lt::settings_pack &settingsPack) const
{
const bool altSpeedLimitEnabled = isAltGlobalSpeedLimitEnabled();
settingsPack.set_int(lt::settings_pack::download_rate_limit, altSpeedLimitEnabled ? altGlobalDownloadSpeedLimit() : globalDownloadSpeedLimit());
settingsPack.set_int(lt::settings_pack::upload_rate_limit, altSpeedLimitEnabled ? altGlobalUploadSpeedLimit() : globalUploadSpeedLimit());
if (limit <= -1)
return limit;
// check for overflow: (limit + m_extraLimit) < std::numeric_limits<int>::max()
return (m_extraLimit < (std::numeric_limits<int>::max() - limit))
? (limit + m_extraLimit)
: std::numeric_limits<int>::max();
}
void SessionImpl::initMetrics()
@ -1575,8 +1561,10 @@ void SessionImpl::initMetrics()
m_metricIndices.disk.diskJobTime = findMetricIndex("disk.disk_job_time");
}
void SessionImpl::loadLTSettings(lt::settings_pack &settingsPack)
lt::settings_pack SessionImpl::loadLTSettings() const
{
lt::settings_pack settingsPack;
const lt::alert_category_t alertMask = lt::alert::error_notification
| lt::alert::file_progress_notification
| lt::alert::ip_block_notification
@ -1594,8 +1582,10 @@ void SessionImpl::loadLTSettings(lt::settings_pack &settingsPack)
// It will not take affect until the listen_interfaces settings is updated
settingsPack.set_int(lt::settings_pack::listen_queue_size, socketBacklogSize());
configureNetworkInterfaces(settingsPack);
applyBandwidthLimits(settingsPack);
applyNetworkInterfacesSettings(settingsPack);
settingsPack.set_int(lt::settings_pack::download_rate_limit, downloadSpeedLimit());
settingsPack.set_int(lt::settings_pack::upload_rate_limit, uploadSpeedLimit());
// The most secure, rc4 only so that all streams are encrypted
settingsPack.set_int(lt::settings_pack::allowed_enc_level, lt::settings_pack::pe_rc4);
@ -1730,7 +1720,9 @@ void SessionImpl::loadLTSettings(lt::settings_pack &settingsPack)
// Queueing System
if (isQueueingSystemEnabled())
{
adjustLimits(settingsPack);
// Internally increase the queue limits to ensure that the magnet is started
settingsPack.set_int(lt::settings_pack::active_downloads, adjustLimit(maxActiveDownloads()));
settingsPack.set_int(lt::settings_pack::active_limit, adjustLimit(maxActiveTorrents()));
settingsPack.set_int(lt::settings_pack::active_seeds, maxActiveUploads());
settingsPack.set_bool(lt::settings_pack::dont_count_slow_torrents, ignoreSlowTorrentsForQueueing());
@ -1846,9 +1838,11 @@ void SessionImpl::loadLTSettings(lt::settings_pack &settingsPack)
settingsPack.set_int(lt::settings_pack::seed_choking_algorithm, lt::settings_pack::anti_leech);
break;
}
return settingsPack;
}
void SessionImpl::configureNetworkInterfaces(lt::settings_pack &settingsPack)
void SessionImpl::applyNetworkInterfacesSettings(lt::settings_pack &settingsPack) const
{
if (m_listenInterfaceConfigured)
return;

9
src/base/bittorrent/sessionimpl.h
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@ -474,11 +474,10 @@ namespace BitTorrent
Q_INVOKABLE void configure();
void configureComponents();
void initializeNativeSession();
void loadLTSettings(lt::settings_pack &settingsPack);
void configureNetworkInterfaces(lt::settings_pack &settingsPack);
lt::settings_pack loadLTSettings() const;
void applyNetworkInterfacesSettings(lt::settings_pack &settingsPack) const;
void configurePeerClasses();
void adjustLimits(lt::settings_pack &settingsPack) const;
void applyBandwidthLimits(lt::settings_pack &settingsPack) const;
int adjustLimit(int limit) const;
void initMetrics();
void adjustLimits();
void applyBandwidthLimits();
@ -553,7 +552,7 @@ namespace BitTorrent
bool m_deferredConfigureScheduled = false;
bool m_IPFilteringConfigured = false;
bool m_listenInterfaceConfigured = false;
mutable bool m_listenInterfaceConfigured = false;
CachedSettingValue<bool> m_isDHTEnabled;
CachedSettingValue<bool> m_isLSDEnabled;