Make use of chrono literals from std library

src/app/main.cpp

@@ -29,6 +29,7 @@
 
 #include <QtGlobal>
 
+#include <chrono>
 #include <cstdlib>
 #include <memory>
 
@@ -79,6 +80,8 @@ Q_IMPORT_PLUGIN(QICOPlugin)
 #include "gui/utils.h"
 #endif
 
+using namespace std::chrono_literals;
+
 void displayVersion();
 bool userAgreesWithLegalNotice();
 void displayBadArgMessage(const QString &message);
@@ -284,7 +287,7 @@ void showSplashScreen()
     painter.drawText(224 - painter.fontMetrics().horizontalAdvance(version), 270, version);
     QSplashScreen *splash = new QSplashScreen(splashImg);
     splash->show();
-    QTimer::singleShot(1500, splash, &QObject::deleteLater);
+    QTimer::singleShot(1500ms, splash, &QObject::deleteLater);
     qApp->processEvents();
 }
 #endif  // DISABLE_GUI

src/base/bittorrent/bandwidthscheduler.cpp

@@ -29,14 +29,16 @@
 
 #include "bandwidthscheduler.h"
 
+#include <chrono>
 #include <utility>
 
 #include <QDate>
 #include <QTime>
-#include <QTimer>
 
 #include "base/preferences.h"
 
+using namespace std::chrono_literals;
+
 BandwidthScheduler::BandwidthScheduler(QObject *parent)
     : QObject(parent)
     , m_lastAlternative(false)
@@ -51,7 +53,7 @@ void BandwidthScheduler::start()
 
     // Timeout regularly to accommodate for external system clock changes
     // eg from the user or from a timesync utility
-    m_timer.start(30000);
+    m_timer.start(30s);
 }
 
 bool BandwidthScheduler::isTimeForAlternative() const

src/base/bittorrent/session.cpp

@@ -30,6 +30,7 @@
 #include "session.h"
 
 #include <algorithm>
+#include <chrono>
 #include <cstdint>
 #include <ctime>
 #include <queue>
@@ -107,6 +108,7 @@
 #include "torrentimpl.h"
 #include "tracker.h"
 
+using namespace std::chrono_literals;
 using namespace BitTorrent;
 
 const Path CATEGORIES_FILE_NAME {u"categories.json"_qs};
@@ -442,11 +444,11 @@ Session::Session(QObject *parent)
         m_port = Utils::Random::rand(1024, 65535);
 
     m_recentErroredTorrentsTimer->setSingleShot(true);
-    m_recentErroredTorrentsTimer->setInterval(1000);
+    m_recentErroredTorrentsTimer->setInterval(1s);
     connect(m_recentErroredTorrentsTimer, &QTimer::timeout
         , this, [this]() { m_recentErroredTorrents.clear(); });
 
-    m_seedingLimitTimer->setInterval(10000);
+    m_seedingLimitTimer->setInterval(10s);
     connect(m_seedingLimitTimer, &QTimer::timeout, this, &Session::processShareLimits);
 
     initializeNativeSession();
@@ -497,7 +499,7 @@ Session::Session(QObject *parent)
     const int saveInterval = saveResumeDataInterval();
     if (saveInterval > 0)
     {
-        m_resumeDataTimer->setInterval(saveInterval * 60 * 1000);
+        m_resumeDataTimer->setInterval(std::chrono::minutes(saveInterval));
         m_resumeDataTimer->start();
     }
 
@@ -2907,7 +2909,7 @@ void Session::setSaveResumeDataInterval(const int value)
 
     if (value > 0)
     {
-        m_resumeDataTimer->setInterval(value * 60 * 1000);
+        m_resumeDataTimer->setInterval(std::chrono::minutes(value));
         m_resumeDataTimer->start();
     }
     else
@@ -5243,7 +5245,6 @@ void Session::handleSessionStatsAlert(const lt::session_stats_alert *p)
     {
         Q_ASSERT(current >= previous);
         Q_ASSERT(interval >= 0);
-        using namespace std::chrono_literals;
         return (((current - previous) * lt::microseconds(1s).count()) / interval);
     };
 

src/base/bittorrent/statistics.cpp

@@ -40,7 +40,7 @@
 using namespace std::chrono_literals;
 using namespace BitTorrent;
 
-const qint64 SAVE_INTERVAL = std::chrono::milliseconds(15min).count();
+const int SAVE_INTERVAL = std::chrono::milliseconds(15min).count();
 
 Statistics::Statistics(Session *session)
     : QObject(session)

src/base/http/server.cpp

@@ -31,6 +31,7 @@
 #include "server.h"
 
 #include <algorithm>
+#include <chrono>
 
 #include <QNetworkProxy>
 #include <QSslCipher>
@@ -44,11 +45,13 @@
 #include "base/utils/net.h"
 #include "connection.h"
 
+using namespace std::chrono_literals;
+
 namespace
 {
-    const int KEEP_ALIVE_DURATION = 7 * 1000;  // milliseconds
+    const int KEEP_ALIVE_DURATION = std::chrono::milliseconds(7s).count();
     const int CONNECTIONS_LIMIT = 500;
-    const int CONNECTIONS_SCAN_INTERVAL = 2;  // seconds
+    const std::chrono::seconds CONNECTIONS_SCAN_INTERVAL {2};
 
     QList<QSslCipher> safeCipherList()
     {
@@ -81,7 +84,7 @@ Server::Server(IRequestHandler *requestHandler, QObject *parent)
 
     auto *dropConnectionTimer = new QTimer(this);
     connect(dropConnectionTimer, &QTimer::timeout, this, &Server::dropTimedOutConnection);
-    dropConnectionTimer->start(CONNECTIONS_SCAN_INTERVAL * 1000);
+    dropConnectionTimer->start(CONNECTIONS_SCAN_INTERVAL);
 }
 
 void Server::incomingConnection(const qintptr socketDescriptor)

src/base/net/dnsupdater.cpp

@@ -37,8 +37,11 @@
 #include "base/net/downloadmanager.h"
 #include "base/version.h"
 
+using namespace std::chrono_literals;
 using namespace Net;
 
+const std::chrono::seconds IP_CHECK_INTERVAL = 30min;
+
 DNSUpdater::DNSUpdater(QObject *parent)
     : QObject(parent)
     , m_state(OK)
@@ -52,13 +55,13 @@ DNSUpdater::DNSUpdater(QObject *parent)
     m_lastIP = QHostAddress(pref->getDNSLastIP());
 
     // Start IP checking timer
-    m_ipCheckTimer.setInterval(IP_CHECK_INTERVAL_MS);
+    m_ipCheckTimer.setInterval(IP_CHECK_INTERVAL);
     connect(&m_ipCheckTimer, &QTimer::timeout, this, &DNSUpdater::checkPublicIP);
     m_ipCheckTimer.start();
 
     // Check lastUpdate to avoid flooding
     if (!m_lastIPCheckTime.isValid()
-        || (m_lastIPCheckTime.secsTo(QDateTime::currentDateTime()) * 1000 > IP_CHECK_INTERVAL_MS))
+        || (m_lastIPCheckTime.secsTo(QDateTime::currentDateTime()) > IP_CHECK_INTERVAL.count()))
     {
         checkPublicIP();
     }

src/base/net/dnsupdater.h

@@ -68,8 +68,6 @@ namespace Net
             FATAL
         };
 
-        static const int IP_CHECK_INTERVAL_MS = 1800000; // 30 min
-
         QString getUpdateUrl() const;
         void processIPUpdateReply(const QString &reply);
 

src/base/rss/rss_session.cpp

@@ -30,6 +30,8 @@
 
 #include "rss_session.h"
 
+#include <chrono>
+
 #include <QDebug>
 #include <QJsonDocument>
 #include <QJsonObject>
@@ -48,7 +50,6 @@
 #include "rss_folder.h"
 #include "rss_item.h"
 
-const int MsecsPerMin = 60000;
 const QString CONF_FOLDER_NAME = u"rss"_qs;
 const QString DATA_FOLDER_NAME = u"rss/articles"_qs;
 const QString FEEDS_FILE_NAME = u"feeds.json"_qs;
@@ -92,7 +93,7 @@ Session::Session()
     connect(&m_refreshTimer, &QTimer::timeout, this, &Session::refresh);
     if (isProcessingEnabled())
     {
-        m_refreshTimer.start(refreshInterval() * MsecsPerMin);
+        m_refreshTimer.start(std::chrono::minutes(refreshInterval()));
         refresh();
     }
 
@@ -433,7 +434,7 @@ void Session::setProcessingEnabled(const bool enabled)
         m_storeProcessingEnabled = enabled;
         if (enabled)
         {
-            m_refreshTimer.start(refreshInterval() * MsecsPerMin);
+            m_refreshTimer.start(std::chrono::minutes(refreshInterval()));
             refresh();
         }
         else
@@ -480,7 +481,7 @@ void Session::setRefreshInterval(const int refreshInterval)
     if (m_storeRefreshInterval != refreshInterval)
     {
         m_storeRefreshInterval = refreshInterval;
-        m_refreshTimer.start(m_storeRefreshInterval * MsecsPerMin);
+        m_refreshTimer.start(std::chrono::minutes(m_storeRefreshInterval));
     }
 }
 

src/base/search/searchhandler.cpp

@@ -29,6 +29,8 @@
 
 #include "searchhandler.h"
 
+#include <chrono>
+
 #include <QMetaObject>
 #include <QProcess>
 #include <QTimer>
@@ -40,6 +42,8 @@
 #include "base/utils/fs.h"
 #include "searchpluginmanager.h"
 
+using namespace std::chrono_literals;
+
 namespace
 {
     enum SearchResultColumn
@@ -85,7 +89,7 @@ SearchHandler::SearchHandler(const QString &pattern, const QString &category, co
 
     m_searchTimeout->setSingleShot(true);
     connect(m_searchTimeout, &QTimer::timeout, this, &SearchHandler::cancelSearch);
-    m_searchTimeout->start(180000); // 3 min
+    m_searchTimeout->start(3min);
 
     // deferred start allows clients to handle starting-related signals
     QMetaObject::invokeMethod(this, [this]() { m_searchProcess->start(QIODevice::ReadOnly); }

src/base/settingsstorage.cpp

@@ -29,7 +29,9 @@
 
 #include "settingsstorage.h"
 
+#include <chrono>
 #include <memory>
+
 #include <QFile>
 #include <QHash>
 
@@ -39,6 +41,8 @@
 #include "profile.h"
 #include "utils/fs.h"
 
+using namespace std::chrono_literals;
+
 namespace
 {
     // Encapsulates serialization of settings in "atomic" way.
@@ -73,7 +77,7 @@ SettingsStorage::SettingsStorage()
     : m_data {TransactionalSettings(u"qBittorrent"_qs).read()}
 {
     m_timer.setSingleShot(true);
-    m_timer.setInterval(5 * 1000);
+    m_timer.setInterval(5s);
     connect(&m_timer, &QTimer::timeout, this, &SettingsStorage::save);
 }
 

src/base/torrentfileswatcher.cpp

@@ -63,7 +63,7 @@
 
 using namespace std::chrono_literals;
 
-const std::chrono::duration WATCH_INTERVAL = 10s;
+const std::chrono::seconds WATCH_INTERVAL {10};
 const int MAX_FAILED_RETRIES = 5;
 const QString CONF_FILE_NAME = u"watched_folders.json"_qs;
 
@@ -478,7 +478,7 @@ void TorrentFilesWatcher::Worker::removeWatchedFolder(const Path &path)
 
 void TorrentFilesWatcher::Worker::scheduleWatchedFolderProcessing(const Path &path)
 {
-    QTimer::singleShot(2000, this, [this, path]()
+    QTimer::singleShot(2s, this, [this, path]()
     {
         processWatchedFolder(path);
     });

src/gui/mainwindow.cpp

@@ -1762,7 +1762,7 @@ void MainWindow::createTrayIcon(const int retries)
         if (retries > 0)
         {
             LogMsg(tr("System tray icon is not available, retrying..."), Log::WARNING);
-            QTimer::singleShot(std::chrono::seconds(2), this, [this, retries]()
+            QTimer::singleShot(2s, this, [this, retries]()
             {
                 if (Preferences::instance()->systemTrayEnabled())
                     createTrayIcon(retries - 1);

src/gui/properties/speedplotview.cpp

@@ -267,7 +267,7 @@ quint64 SpeedPlotView::maxYValue() const
         if (!m_properties[static_cast<GraphID>(id)].enable)
             continue;
 
-        milliseconds duration {0ms};
+        milliseconds duration {0};
         for (int i = static_cast<int>(queue.size()) - 1; i >= 0; --i)
         {
             maxYValue = std::max(maxYValue, queue[i].data[id]);
@@ -360,7 +360,7 @@ void SpeedPlotView::paintEvent(QPaintEvent *)
             continue;
 
         QVector<QPoint> points;
-        milliseconds duration {0ms};
+        milliseconds duration {0};
 
         for (int i = static_cast<int>(queue.size()) - 1; i >= 0; --i)
         {

src/gui/properties/speedplotview.h

@@ -111,7 +111,7 @@ private:
     private:
         const milliseconds m_resolution;
         const milliseconds m_maxDuration;
-        milliseconds m_currentDuration {0ms};
+        milliseconds m_currentDuration {0};
         int m_counter = 0;
         SampleData m_accumulator {};
         DataCircularBuffer m_sink {};

src/gui/properties/speedwidget.cpp

@@ -32,7 +32,6 @@
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QMenu>
-#include <QTimer>
 #include <QVBoxLayout>
 
 #include "base/bittorrent/session.h"

src/gui/shutdownconfirmdialog.cpp

@@ -29,6 +29,8 @@
 
 #include "shutdownconfirmdialog.h"
 
+#include <chrono>
+
 #include <QDialogButtonBox>
 #include <QIcon>
 #include <QPushButton>
@@ -38,6 +40,8 @@
 #include "ui_shutdownconfirmdialog.h"
 #include "utils.h"
 
+using namespace std::chrono_literals;
+
 ShutdownConfirmDialog::ShutdownConfirmDialog(QWidget *parent, const ShutdownDialogAction &action)
     : QDialog(parent)
     , m_ui(new Ui::ShutdownConfirmDialog)
@@ -64,7 +68,7 @@ ShutdownConfirmDialog::ShutdownConfirmDialog(QWidget *parent, const ShutdownDial
     setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint);
     move(Utils::Gui::screenCenter(this));
 
-    m_timer.setInterval(1000); // 1sec
+    m_timer.setInterval(1s);
     connect(&m_timer, &QTimer::timeout, this, &ShutdownConfirmDialog::updateSeconds);
 }
 

src/webui/api/appcontroller.cpp

@@ -31,6 +31,7 @@
 #include "appcontroller.h"
 
 #include <algorithm>
+#include <chrono>
 
 #include <QCoreApplication>
 #include <QDebug>
@@ -62,6 +63,8 @@
 #include "base/version.h"
 #include "../webapplication.h"
 
+using namespace std::chrono_literals;
+
 void AppController::webapiVersionAction()
 {
     setResult(API_VERSION.toString());
@@ -93,7 +96,7 @@ void AppController::shutdownAction()
     // Special case handling for shutdown, we
     // need to reply to the Web UI before
     // actually shutting down.
-    QTimer::singleShot(100, qApp, &QCoreApplication::quit);
+    QTimer::singleShot(100ms, qApp, &QCoreApplication::quit);
 }
 
 void AppController::preferencesAction()