Merge branch 'threaded_settings'

Fixes #1801

src/core/core.cpp

@@ -419,7 +419,7 @@ bool Core::checkConnection()
 void Core::bootstrapDht()
 {
     const Settings& s = Settings::getInstance();
-    QList<Settings::DhtServer> dhtServerList = s.getDhtServerList();
+    QList<DhtServer> dhtServerList = s.getDhtServerList();
 
     int listSize = dhtServerList.size();
     if (listSize == 0)
@@ -434,7 +434,7 @@ void Core::bootstrapDht()
     int i=0;
     while (i < 2) // i think the more we bootstrap, the more we jitter because the more we overwrite nodes
     {
-        const Settings::DhtServer& dhtServer = dhtServerList[j % listSize];
+        const DhtServer& dhtServer = dhtServerList[j % listSize];
         if (tox_bootstrap(tox, dhtServer.address.toLatin1().data(),
             dhtServer.port, CUserId(dhtServer.userId).data(), nullptr))
         {

src/core/corefile.cpp

@@ -243,8 +243,8 @@ void CoreFile::onFileReceiveCallback(Tox*, uint32_t friendId, uint32_t fileId, u
         {
             // Avatars of size 0 means explicitely no avatar
             emit core->friendAvatarRemoved(friendId);
-            QFile::remove(QDir(Settings::getSettingsDirPath()).filePath("avatars/"+friendAddr.left(64)+".png"));
+            QFile::remove(Settings::getInstance().getSettingsDirPath()+"avatars/"+friendAddr.left(64)+".png");
-            QFile::remove(QDir(Settings::getSettingsDirPath()).filePath("avatars/"+friendAddr.left(64)+".hash"));
+            QFile::remove(Settings::getInstance().getSettingsDirPath()+"avatars/"+friendAddr.left(64)+".hash");
             return;
         }
         else

src/core/corestructs.h

@@ -11,6 +11,14 @@ class QTimer;
 
 enum class Status : int {Online = 0, Away, Busy, Offline};
 
+struct DhtServer
+{
+    QString name;
+    QString userId;
+    QString address;
+    quint16 port;
+};
+
 struct ToxFile
 {
     enum FileStatus

src/historykeeper.cpp

@@ -359,7 +359,7 @@ HistoryKeeper::ChatType HistoryKeeper::convertToChatType(int ct)
 
 QString HistoryKeeper::getHistoryPath(QString currentProfile, int encrypted)
 {
-    QDir baseDir(Settings::getSettingsDirPath());
+    QDir baseDir(Settings::getInstance().getSettingsDirPath());
     if (currentProfile.isEmpty())
         currentProfile = Settings::getInstance().getCurrentProfile();
 

src/main.cpp

@@ -95,7 +95,7 @@ int main(int argc, char *argv[])
 #endif
 
     qsrand(time(0));
-
+    Settings::getInstance();
     Translator::translate();
 
     // Process arguments
@@ -110,7 +110,6 @@ int main(int argc, char *argv[])
 #ifndef Q_OS_ANDROID
     IPC::getInstance();
 #endif
-    Settings::getInstance(); // Build our Settings singleton as soon as QApplication is ready, not before
 
     if (parser.isSet("p"))
     {
@@ -144,7 +143,7 @@ int main(int argc, char *argv[])
 
 #ifdef LOG_TO_FILE
     logFile = new QTextStream;
-    QFile logfile(Settings::getSettingsDirPath()+"qtox.log");
+    QFile logfile(Settings::getInstance().getSettingsDirPath()+"qtox.log");
     if (logfile.open(QIODevice::Append))
     {
         logFile->setDevice(&logfile);
@@ -272,6 +271,7 @@ int main(int argc, char *argv[])
 #endif
 
     Nexus::destroyInstance();
-
+    Settings::destroyInstance();
+    qDebug() << "Clean exit with status"<<errorcode;
     return errorcode;
 }

src/misc/settings.cpp

@@ -36,20 +36,35 @@
 #include <QList>
 #include <QStyleFactory>
 #include <QCryptographicHash>
-
+#include <QMutexLocker>
+#include <QThread>
 
 #define SHOW_SYSTEM_TRAY_DEFAULT (bool) true
 
 const QString Settings::globalSettingsFile = "qtox.ini";
 Settings* Settings::settings{nullptr};
-bool Settings::makeToxPortable{false};
+QMutex Settings::bigLock{QMutex::Recursive};
+QThread* Settings::settingsThread{nullptr};
 
 Settings::Settings() :
-    loaded(false), useCustomDhtList{false}, currentProfileId(0)
+    loaded(false), useCustomDhtList{false},
+    makeToxPortable{false}, currentProfileId(0)
 {
+    settingsThread = new QThread();
+    settingsThread->setObjectName("qTox Settings");
+    settingsThread->start(QThread::LowPriority);
+    moveToThread(settingsThread);
     load();
 }
 
+Settings::~Settings()
+{
+    sync();
+    settingsThread->exit(0);
+    settingsThread->wait();
+    delete settingsThread;
+}
+
 Settings& Settings::getInstance()
 {
     if (!settings)
@@ -58,8 +73,16 @@ Settings& Settings::getInstance()
     return *settings;
 }
 
+void Settings::destroyInstance()
+{
+    delete settings;
+    settings = nullptr;
+}
+
 void Settings::load()
 {
+    QMutexLocker locker{&bigLock};
+
     if (loaded)
         return;
 
@@ -259,12 +282,20 @@ void Settings::load()
 
 void Settings::save(bool writePersonal)
 {
-    QString filePath = QDir(getSettingsDirPath()).filePath(globalSettingsFile);
+    if (QThread::currentThread() != settingsThread)
+        return (void) QMetaObject::invokeMethod(&getInstance(), "save",
+                                                Q_ARG(bool, writePersonal));
+
+    QString filePath = getSettingsDirPath()+globalSettingsFile;
     save(filePath, writePersonal);
 }
 
 void Settings::save(QString path, bool writePersonal)
 {
+    if (QThread::currentThread() != settingsThread)
+        return (void) QMetaObject::invokeMethod(&getInstance(), "save",
+                                                Q_ARG(QString, path), Q_ARG(bool, writePersonal));
+
 #ifndef Q_OS_ANDROID
     if (IPC::getInstance().isCurrentOwner())
 #endif
@@ -276,6 +307,7 @@ void Settings::save(QString path, bool writePersonal)
 
 void Settings::saveGlobal(QString path)
 {
+    QMutexLocker locker{&bigLock};
     qDebug() << "Saving settings in " + path;
 
     QSettings s(path, QSettings::IniFormat);
@@ -376,6 +408,7 @@ void Settings::saveGlobal(QString path)
 
 void Settings::savePersonal(QString path)
 {
+    QMutexLocker locker{&bigLock};
     if (currentProfile.isEmpty())
     {
         qDebug() << "could not save personal settings because currentProfile profile is empty";
@@ -414,16 +447,17 @@ uint32_t Settings::makeProfileId(const QString& profile)
 
 QString Settings::getSettingsDirPath()
 {
+    QMutexLocker locker{&bigLock};
     if (makeToxPortable)
         return QString(".")+QDir::separator();
 
     // workaround for https://bugreports.qt-project.org/browse/QTBUG-38845
 #ifdef Q_OS_WIN
     return QDir::cleanPath(QStandardPaths::writableLocation(QStandardPaths::HomeLocation) + QDir::separator()
-                           + "AppData" + QDir::separator() + "Roaming" + QDir::separator() + "tox" + QDir::separator());
+                           + "AppData" + QDir::separator() + "Roaming" + QDir::separator() + "tox")+QDir::separator();
 #else
     return QDir::cleanPath(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)
-                           + QDir::separator() + "tox" + QDir::separator());
+                           + QDir::separator() + "tox")+QDir::separator();
 #endif
 }
 
@@ -484,34 +518,40 @@ QByteArray Settings::getAvatarHash(const QString& ownerId)
     return out;
 }
 
-const QList<Settings::DhtServer>& Settings::getDhtServerList() const
+const QList<DhtServer>& Settings::getDhtServerList() const
 {
+    QMutexLocker locker{&bigLock};
     return dhtServerList;
 }
 
 void Settings::setDhtServerList(const QList<DhtServer>& newDhtServerList)
 {
+    QMutexLocker locker{&bigLock};
     dhtServerList = newDhtServerList;
     emit dhtServerListChanged();
 }
 
 bool Settings::getEnableIPv6() const
 {
+    QMutexLocker locker{&bigLock};
     return enableIPv6;
 }
 
 void Settings::setEnableIPv6(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     enableIPv6 = newValue;
 }
 
 bool Settings::getMakeToxPortable() const
 {
+    QMutexLocker locker{&bigLock};
     return makeToxPortable;
 }
 
 void Settings::setMakeToxPortable(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     makeToxPortable = newValue;
     save(globalSettingsFile); // Commit to the portable file that we don't want to use it
     if (!newValue) // Update the new file right now if not already done
@@ -521,6 +561,7 @@ void Settings::setMakeToxPortable(bool newValue)
 bool Settings::getAutorun() const
 {
 #ifdef QTOX_PLATFORM_EXT
+    QMutexLocker locker{&bigLock};
     return Platform::getAutorun();
 #else
     return false;
@@ -530,6 +571,7 @@ bool Settings::getAutorun() const
 void Settings::setAutorun(bool newValue)
 {
 #ifdef QTOX_PLATFORM_EXT
+    QMutexLocker locker{&bigLock};
     Platform::setAutorun(newValue);
 #else
     Q_UNUSED(newValue);
@@ -538,152 +580,181 @@ void Settings::setAutorun(bool newValue)
 
 bool Settings::getAutostartInTray() const
 {
+    QMutexLocker locker{&bigLock};
     return autostartInTray;
 }
 
 QString Settings::getStyle() const
 {
+    QMutexLocker locker{&bigLock};
     return style;
 }
 
 void Settings::setStyle(const QString& newStyle)
 {
+    QMutexLocker locker{&bigLock};
     style = newStyle;
 }
 
 bool Settings::getShowSystemTray() const
 {
+    QMutexLocker locker{&bigLock};
     return showSystemTray;
 }
 
 void Settings::setShowSystemTray(const bool& newValue)
 {
+    QMutexLocker locker{&bigLock};
     showSystemTray = newValue;
 }
 
 void Settings::setUseEmoticons(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     useEmoticons = newValue;
 }
 
 bool Settings::getUseEmoticons() const
 {
+    QMutexLocker locker{&bigLock};
     return useEmoticons;
 }
 
 void Settings::setAutoSaveEnabled(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     autoSaveEnabled = newValue;
 }
 
 bool Settings::getAutoSaveEnabled() const
 {
+    QMutexLocker locker{&bigLock};
     return autoSaveEnabled;
 }
 
 void Settings::setAutostartInTray(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     autostartInTray = newValue;
 }
 
 bool Settings::getCloseToTray() const
 {
+    QMutexLocker locker{&bigLock};
     return closeToTray;
 }
 
 void Settings::setCloseToTray(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     closeToTray = newValue;
 }
 
 bool Settings::getMinimizeToTray() const
 {
+    QMutexLocker locker{&bigLock};
     return minimizeToTray;
 }
 
-
 void Settings::setMinimizeToTray(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     minimizeToTray = newValue;
 }
 
 bool Settings::getLightTrayIcon() const
 {
+    QMutexLocker locker{&bigLock};
     return lightTrayIcon;
 }
 
 void Settings::setLightTrayIcon(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     lightTrayIcon = newValue;
 }
 
 bool Settings::getStatusChangeNotificationEnabled() const
 {
+    QMutexLocker locker{&bigLock};
     return statusChangeNotificationEnabled;
 }
 
 void Settings::setStatusChangeNotificationEnabled(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     statusChangeNotificationEnabled = newValue;
 }
 
 bool Settings::getShowInFront() const
 {
+    QMutexLocker locker{&bigLock};
    return showInFront;
 }
 
 void Settings::setShowInFront(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     showInFront = newValue;
 }
 
 bool Settings::getNotifySound() const
 {
-   return notifySound;
+    QMutexLocker locker{&bigLock};
+    return notifySound;
 }
 
 void Settings::setNotifySound(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     notifySound = newValue;
 }
 
 bool Settings::getGroupAlwaysNotify() const
 {
+    QMutexLocker locker{&bigLock};
     return groupAlwaysNotify;
 }
 
 void Settings::setGroupAlwaysNotify(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     groupAlwaysNotify = newValue;
 }
 
 QString Settings::getTranslation() const
 {
+    QMutexLocker locker{&bigLock};
     return translation;
 }
 
 void Settings::setTranslation(QString newValue)
 {
+    QMutexLocker locker{&bigLock};
     translation = newValue;
 }
 
 bool Settings::getForceTCP() const
 {
+    QMutexLocker locker{&bigLock};
     return forceTCP;
 }
 
 void Settings::setForceTCP(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     forceTCP = newValue;
 }
 
 ProxyType Settings::getProxyType() const
 {
+    QMutexLocker locker{&bigLock};
     return proxyType;
 }
 
 void Settings::setProxyType(int newValue)
 {
+    QMutexLocker locker{&bigLock};
     if (newValue >= 0 && newValue <= 2)
         proxyType = static_cast<ProxyType>(newValue);
     else
@@ -692,57 +763,68 @@ void Settings::setProxyType(int newValue)
 
 QString Settings::getProxyAddr() const
 {
+    QMutexLocker locker{&bigLock};
     return proxyAddr;
 }
 
 void Settings::setProxyAddr(const QString& newValue)
 {
+    QMutexLocker locker{&bigLock};
     proxyAddr = newValue;
 }
 
 int Settings::getProxyPort() const
 {
+    QMutexLocker locker{&bigLock};
     return proxyPort;
 }
 
 void Settings::setProxyPort(int newValue)
 {
+    QMutexLocker locker{&bigLock};
     proxyPort = newValue;
 }
 
 QString Settings::getCurrentProfile() const
 {
+    QMutexLocker locker{&bigLock};
     return currentProfile;
 }
 
 uint32_t Settings::getCurrentProfileId() const
 {
+    QMutexLocker locker{&bigLock};
     return currentProfileId;
 }
 
 void Settings::setCurrentProfile(QString profile)
 {
+    QMutexLocker locker{&bigLock};
     currentProfile = profile;
     currentProfileId = makeProfileId(currentProfile);
 }
 
 bool Settings::getEnableLogging() const
 {
+    QMutexLocker locker{&bigLock};
     return enableLogging;
 }
 
 void Settings::setEnableLogging(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     enableLogging = newValue;
 }
 
 Db::syncType Settings::getDbSyncType() const
 {
+    QMutexLocker locker{&bigLock};
     return dbSyncType;
 }
 
 void Settings::setDbSyncType(int newValue)
 {
+    QMutexLocker locker{&bigLock};
     if (newValue >= 0 && newValue <= 2)
         dbSyncType = static_cast<Db::syncType>(newValue);
     else
@@ -751,11 +833,13 @@ void Settings::setDbSyncType(int newValue)
 
 int Settings::getAutoAwayTime() const
 {
+    QMutexLocker locker{&bigLock};
     return autoAwayTime;
 }
 
 void Settings::setAutoAwayTime(int newValue)
 {
+    QMutexLocker locker{&bigLock};
     if (newValue < 0)
         newValue = 10;
 
@@ -764,6 +848,7 @@ void Settings::setAutoAwayTime(int newValue)
 
 QString Settings::getAutoAcceptDir(const ToxId& id) const
 {
+    QMutexLocker locker{&bigLock};
     QString key = id.publicKey;
 
     auto it = friendLst.find(key);
@@ -775,6 +860,7 @@ QString Settings::getAutoAcceptDir(const ToxId& id) const
 
 void Settings::setAutoAcceptDir(const ToxId &id, const QString& dir)
 {
+    QMutexLocker locker{&bigLock};
     QString key = id.publicKey;
 
     auto it = friendLst.find(key);
@@ -791,251 +877,299 @@ void Settings::setAutoAcceptDir(const ToxId &id, const QString& dir)
 
 QString Settings::getGlobalAutoAcceptDir() const
 {
+    QMutexLocker locker{&bigLock};
     return globalAutoAcceptDir;
 }
 
 void Settings::setGlobalAutoAcceptDir(const QString& newValue)
 {
+    QMutexLocker locker{&bigLock};
     globalAutoAcceptDir = newValue;
 }
 
 void Settings::setWidgetData(const QString& uniqueName, const QByteArray& data)
 {
+    QMutexLocker locker{&bigLock};
     widgetSettings[uniqueName] = data;
 }
 
 QByteArray Settings::getWidgetData(const QString& uniqueName) const
 {
+    QMutexLocker locker{&bigLock};
     return widgetSettings.value(uniqueName);
 }
 
 bool Settings::isAnimationEnabled() const
 {
+    QMutexLocker locker{&bigLock};
     return enableSmoothAnimation;
 }
 
 void Settings::setAnimationEnabled(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     enableSmoothAnimation = newValue;
 }
 
 QString Settings::getSmileyPack() const
 {
+    QMutexLocker locker{&bigLock};
     return smileyPack;
 }
 
 void Settings::setSmileyPack(const QString &value)
 {
+    QMutexLocker locker{&bigLock};
     smileyPack = value;
     emit smileyPackChanged();
 }
 
 bool Settings::isCurstomEmojiFont() const
 {
+    QMutexLocker locker{&bigLock};
     return customEmojiFont;
 }
 
 void Settings::setCurstomEmojiFont(bool value)
 {
+    QMutexLocker locker{&bigLock};
     customEmojiFont = value;
     emit emojiFontChanged();
 }
 
 int Settings::getEmojiFontPointSize() const
 {
+    QMutexLocker locker{&bigLock};
     return emojiFontPointSize;
 }
 
 void Settings::setEmojiFontPointSize(int value)
 {
+    QMutexLocker locker{&bigLock};
     emojiFontPointSize = value;
     emit emojiFontChanged();
 }
 
 int Settings::getFirstColumnHandlePos() const
 {
+    QMutexLocker locker{&bigLock};
     return firstColumnHandlePos;
 }
 
 void Settings::setFirstColumnHandlePos(const int pos)
 {
+    QMutexLocker locker{&bigLock};
     firstColumnHandlePos = pos;
 }
 
 int Settings::getSecondColumnHandlePosFromRight() const
 {
+    QMutexLocker locker{&bigLock};
     return secondColumnHandlePosFromRight;
 }
 
 void Settings::setSecondColumnHandlePosFromRight(const int pos)
 {
+    QMutexLocker locker{&bigLock};
     secondColumnHandlePosFromRight = pos;
 }
 
 const QString& Settings::getTimestampFormat() const
 {
+    QMutexLocker locker{&bigLock};
     return timestampFormat;
 }
 
 void Settings::setTimestampFormat(const QString &format)
 {
+    QMutexLocker locker{&bigLock};
     timestampFormat = format;
 }
 
 const QString& Settings::getDateFormat() const
 {
+    QMutexLocker locker{&bigLock};
     return dateFormat;
 }
 
 void Settings::setDateFormat(const QString &format)
 {
+    QMutexLocker locker{&bigLock};
     dateFormat = format;
 }
 
-
 QString Settings::getEmojiFontFamily() const
 {
+    QMutexLocker locker{&bigLock};
     return emojiFontFamily;
 }
 
 void Settings::setEmojiFontFamily(const QString &value)
 {
+    QMutexLocker locker{&bigLock};
     emojiFontFamily = value;
     emit emojiFontChanged();
 }
 
 bool Settings::getUseNativeStyle() const
 {
+    QMutexLocker locker{&bigLock};
     return useNativeStyle;
 }
 
 void Settings::setUseNativeStyle(bool value)
 {
+    QMutexLocker locker{&bigLock};
     useNativeStyle = value;
 }
 
 QByteArray Settings::getWindowGeometry() const
 {
+    QMutexLocker locker{&bigLock};
     return windowGeometry;
 }
 
 void Settings::setWindowGeometry(const QByteArray &value)
 {
+    QMutexLocker locker{&bigLock};
     windowGeometry = value;
 }
 
 QByteArray Settings::getWindowState() const
 {
+    QMutexLocker locker{&bigLock};
     return windowState;
 }
 
 void Settings::setWindowState(const QByteArray &value)
 {
+    QMutexLocker locker{&bigLock};
     windowState = value;
 }
 
 bool Settings::getCheckUpdates() const
 {
+    QMutexLocker locker{&bigLock};
     return checkUpdates;
 }
 
 void Settings::setCheckUpdates(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     checkUpdates = newValue;
 }
 
 bool Settings::getShowWindow() const
 {
+    QMutexLocker locker{&bigLock};
     return showWindow;
 }
 
 void Settings::setShowWindow(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     showWindow = newValue;
 }
 
 QByteArray Settings::getSplitterState() const
 {
+    QMutexLocker locker{&bigLock};
     return splitterState;
 }
 
 void Settings::setSplitterState(const QByteArray &value)
 {
+    QMutexLocker locker{&bigLock};
     splitterState = value;
 }
 
 bool Settings::isMinimizeOnCloseEnabled() const
 {
+    QMutexLocker locker{&bigLock};
     return minimizeOnClose;
 }
 
 void Settings::setMinimizeOnClose(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     minimizeOnClose = newValue;
 }
 
 bool Settings::isTypingNotificationEnabled() const
 {
+    QMutexLocker locker{&bigLock};
     return typingNotification;
 }
 
 void Settings::setTypingNotification(bool enabled)
 {
+    QMutexLocker locker{&bigLock};
     typingNotification = enabled;
 }
 
 QString Settings::getInDev() const
 {
+    QMutexLocker locker{&bigLock};
     return inDev;
 }
 
 void Settings::setInDev(const QString& deviceSpecifier)
 {
+    QMutexLocker locker{&bigLock};
     inDev = deviceSpecifier;
 }
 
 QString Settings::getVideoDev() const
 {
+    QMutexLocker locker{&bigLock};
     return videoDev;
 }
 
 void Settings::setVideoDev(const QString& deviceSpecifier)
 {
+    QMutexLocker locker{&bigLock};
     videoDev = deviceSpecifier;
 }
 
 QString Settings::getOutDev() const
 {
+    QMutexLocker locker{&bigLock};
     return outDev;
 }
 
 void Settings::setOutDev(const QString& deviceSpecifier)
 {
+    QMutexLocker locker{&bigLock};
     outDev = deviceSpecifier;
 }
 
 bool Settings::getFilterAudio() const
 {
+    QMutexLocker locker{&bigLock};
     return filterAudio;
 }
 
 void Settings::setFilterAudio(bool newValue)
 {
+    QMutexLocker locker{&bigLock};
     filterAudio = newValue;
 }
 
 QSize Settings::getCamVideoRes() const
 {
+    QMutexLocker locker{&bigLock};
     return camVideoRes;
 }
 
 void Settings::setCamVideoRes(QSize newValue)
 {
+    QMutexLocker locker{&bigLock};
     camVideoRes = newValue;
 }
 
 QString Settings::getFriendAdress(const QString &publicKey) const
 {
+    QMutexLocker locker{&bigLock};
     QString key = ToxId(publicKey).publicKey;
     auto it = friendLst.find(key);
     if (it != friendLst.end())
@@ -1046,6 +1180,7 @@ QString Settings::getFriendAdress(const QString &publicKey) const
 
 void Settings::updateFriendAdress(const QString &newAddr)
 {
+    QMutexLocker locker{&bigLock};
     QString key = ToxId(newAddr).publicKey;
     auto it = friendLst.find(key);
     if (it != friendLst.end())
@@ -1064,6 +1199,7 @@ void Settings::updateFriendAdress(const QString &newAddr)
 
 QString Settings::getFriendAlias(const ToxId &id) const
 {
+    QMutexLocker locker{&bigLock};
     QString key = id.publicKey;
     auto it = friendLst.find(key);
     if (it != friendLst.end())
@@ -1074,6 +1210,7 @@ QString Settings::getFriendAlias(const ToxId &id) const
 
 void Settings::setFriendAlias(const ToxId &id, const QString &alias)
 {
+    QMutexLocker locker{&bigLock};
     QString key = id.publicKey;
     auto it = friendLst.find(key);
     if (it != friendLst.end())
@@ -1092,50 +1229,71 @@ void Settings::setFriendAlias(const ToxId &id, const QString &alias)
 
 void Settings::removeFriendSettings(const ToxId &id)
 {
+    QMutexLocker locker{&bigLock};
     QString key = id.publicKey;
     friendLst.remove(key);
 }
 
 bool Settings::getFauxOfflineMessaging() const
 {
+    QMutexLocker locker{&bigLock};
     return fauxOfflineMessaging;
 }
 
 void Settings::setFauxOfflineMessaging(bool value)
 {
+    QMutexLocker locker{&bigLock};
     fauxOfflineMessaging = value;
 }
 
 bool Settings::getCompactLayout() const
 {
+    QMutexLocker locker{&bigLock};
     return compactLayout;
 }
 
 void Settings::setCompactLayout(bool value)
 {
+    QMutexLocker locker{&bigLock};
     compactLayout = value;
 }
 
 bool Settings::getGroupchatPosition() const
 {
+    QMutexLocker locker{&bigLock};
     return groupchatPosition;
 }
 
 void Settings::setGroupchatPosition(bool value)
 {
+    QMutexLocker locker{&bigLock};
     groupchatPosition = value;
 }
 
 int Settings::getThemeColor() const
 {
+    QMutexLocker locker{&bigLock};
     return themeColor;
 }
 
 void Settings::setThemeColor(const int &value)
 {
+    QMutexLocker locker{&bigLock};
     themeColor = value;
 }
 
+bool Settings::getAutoLogin() const
+{
+    QMutexLocker locker{&bigLock};
+    return autoLogin;
+}
+
+void Settings::setAutoLogin(bool state)
+{
+    QMutexLocker locker{&bigLock};
+    autoLogin = state;
+}
+
 void Settings::createPersonal(QString basename)
 {
     QString path = getSettingsDirPath() + QDir::separator() + basename + ".ini";
@@ -1159,12 +1317,14 @@ void Settings::createSettingsDir()
         qCritical() << "Error while creating directory " << dir;
 }
 
-bool Settings::getAutoLogin() const
+void Settings::sync()
 {
-    return autoLogin;
+    if (QThread::currentThread() != settingsThread)
-}
+    {
+        QMetaObject::invokeMethod(&getInstance(), "sync", Qt::BlockingQueuedConnection);
+        return;
+    }
 
-void Settings::setAutoLogin(bool state)
+    QMutexLocker locker{&bigLock};
-{
+    qApp->processEvents();
-    autoLogin = state;
 }

src/misc/settings.h

@@ -20,6 +20,8 @@
 #include <QHash>
 #include <QObject>
 #include <QPixmap>
+#include <QMutex>
+#include "src/core/corestructs.h"
 
 class ToxId;
 namespace Db { enum class syncType; }
@@ -30,22 +32,26 @@ class Settings : public QObject
 {
     Q_OBJECT
 public:
-    ~Settings() = default;
     static Settings& getInstance();
+    static void destroyInstance();
+    QString getSettingsDirPath(); ///< The returned path ends with a directory separator
+
     void createSettingsDir(); ///< Creates a path to the settings dir, if it doesn't already exist
+    void createPersonal(QString basename); ///< Write a default personnal .ini settings file for a profile
 
-    void createPersonal(QString basename); ///< Write a default personnal settings file for a profile
+public slots:
+    void load();
+    void save(bool writePersonal = true); ///< Asynchronous
+    void save(QString path, bool writePersonal = true); ///< Asynchronous
+    void sync(); ///< Waits for all asynchronous operations to complete
 
-    static QString getSettingsDirPath(); ///< The returned path ends with a directory separator
+signals:
-
+    void dhtServerListChanged();
-    struct DhtServer
+    void smileyPackChanged();
-    {
+    void emojiFontChanged();
-        QString name;
-        QString userId;
-        QString address;
-        quint16 port;
-    };
 
+public:
+    // Getter/setters
     const QList<DhtServer>& getDhtServerList() const;
     void setDhtServerList(const QList<DhtServer>& newDhtServerList);
 
@@ -146,28 +152,6 @@ public:
     QSize getCamVideoRes() const;
     void setCamVideoRes(QSize newValue);
 
-    // Assume all widgets have unique names
-    // Don't use it to save every single thing you want to save, use it
-    // for some general purpose widgets, such as MainWindows or Splitters,
-    // which have widget->saveX() and widget->loadX() methods.
-    QByteArray getWidgetData(const QString& uniqueName) const;
-    void setWidgetData(const QString& uniqueName, const QByteArray& data);
-
-    // Wrappers around getWidgetData() and setWidgetData()
-    // Assume widget has a unique objectName set
-    template <class T>
-    void restoreGeometryState(T* widget) const
-    {
-        widget->restoreGeometry(getWidgetData(widget->objectName() + "Geometry"));
-        widget->restoreState(getWidgetData(widget->objectName() + "State"));
-    }
-    template <class T>
-    void saveGeometryState(const T* widget)
-    {
-        setWidgetData(widget->objectName() + "Geometry", widget->saveGeometry());
-        setWidgetData(widget->objectName() + "State", widget->saveState());
-    }
-
     bool isAnimationEnabled() const;
     void setAnimationEnabled(bool newValue);
 
@@ -248,24 +232,38 @@ public:
     bool getAutoLogin() const;
     void setAutoLogin(bool state);
 
-public:
+    // Assume all widgets have unique names
-    void save(bool writePersonal = true);
+    // Don't use it to save every single thing you want to save, use it
-    void save(QString path, bool writePersonal = true);
+    // for some general purpose widgets, such as MainWindows or Splitters,
-    void load();
+    // which have widget->saveX() and widget->loadX() methods.
+    QByteArray getWidgetData(const QString& uniqueName) const;
+    void setWidgetData(const QString& uniqueName, const QByteArray& data);
+
+    // Wrappers around getWidgetData() and setWidgetData()
+    // Assume widget has a unique objectName set
+    template <class T>
+    void restoreGeometryState(T* widget) const
+    {
+        widget->restoreGeometry(getWidgetData(widget->objectName() + "Geometry"));
+        widget->restoreState(getWidgetData(widget->objectName() + "State"));
+    }
+    template <class T>
+    void saveGeometryState(const T* widget)
+    {
+        setWidgetData(widget->objectName() + "Geometry", widget->saveGeometry());
+        setWidgetData(widget->objectName() + "State", widget->saveState());
+    }
 
 private:
-    static Settings* settings;
-
     Settings();
+    ~Settings();
     Settings(Settings &settings) = delete;
     Settings& operator=(const Settings&) = delete;
     static uint32_t makeProfileId(const QString& profile);
     void saveGlobal(QString path);
     void savePersonal(QString path);
 
-    static const QString globalSettingsFile;
+private:
-    static const QString OLDFILENAME;
-
     bool loaded;
 
     bool useCustomDhtList;
@@ -279,7 +277,7 @@ private:
     bool groupchatPosition;
     bool enableIPv6;
     QString translation;
-    static bool makeToxPortable;
+    bool makeToxPortable;
     bool autostartInTray;
     bool closeToTray;
     bool minimizeToTray;
@@ -354,10 +352,10 @@ private:
 
     int themeColor;
 
-signals:
+    static QMutex bigLock;
-    void dhtServerListChanged();
+    static Settings* settings;
-    void smileyPackChanged();
+    static const QString globalSettingsFile;
-    void emojiFontChanged();
+    static QThread* settingsThread;
 };
 
 #endif // SETTINGS_HPP

src/profile.cpp

@@ -144,7 +144,7 @@ QByteArray Profile::loadToxSave()
     /// TODO: Cache the data, invalidate it only when we save
     QByteArray data;
 
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name + ".tox";
+    QString path = Settings::getInstance().getSettingsDirPath() + name + ".tox";
     QFile saveFile(path);
     qint64 fileSize;
     qDebug() << "Loading tox save "<<path;
@@ -211,7 +211,7 @@ void Profile::saveToxSave(QByteArray data)
     ProfileLocker::assertLock();
     assert(ProfileLocker::getCurLockName() == name);
 
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name + ".tox";
+    QString path = Settings::getInstance().getSettingsDirPath() + name + ".tox";
     qDebug() << "Saving tox save to "<<path;
     QSaveFile saveFile(path);
     if (!saveFile.open(QIODevice::WriteOnly))
@@ -239,7 +239,7 @@ void Profile::saveToxSave(QByteArray data)
 
 bool Profile::exists(QString name)
 {
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name;
+    QString path = Settings::getInstance().getSettingsDirPath() + name;
     return QFile::exists(path+".tox") && QFile::exists(path+".ini");
 }
 
@@ -251,7 +251,7 @@ bool Profile::isEncrypted()
 bool Profile::isEncrypted(QString name)
 {
     uint8_t data[encryptHeaderSize] = {0};
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name + ".tox";
+    QString path = Settings::getInstance().getSettingsDirPath() + name + ".tox";
     QFile saveFile(path);
     if (!saveFile.open(QIODevice::ReadOnly))
     {
@@ -283,7 +283,7 @@ void Profile::remove()
             i--;
         }
     }
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name;
+    QString path = Settings::getInstance().getSettingsDirPath() + name;
     QFile::remove(path+".tox");
     QFile::remove(path+".ini");
 
@@ -293,8 +293,8 @@ void Profile::remove()
 
 bool Profile::rename(QString newName)
 {
-    QString path = Settings::getSettingsDirPath() + QDir::separator() + name,
+    QString path = Settings::getInstance().getSettingsDirPath() + name,
-            newPath = Settings::getSettingsDirPath() + QDir::separator() + newName;
+            newPath = Settings::getInstance().getSettingsDirPath() + newName;
 
     if (!ProfileLocker::lock(newName))
         return false;

src/widget/form/chatform.cpp

@@ -876,11 +876,11 @@ void ChatForm::doScreenshot()
     connect(screenshotGrabber, &ScreenshotGrabber::screenshotTaken, this, &ChatForm::onScreenshotTaken);
     screenshotGrabber->showGrabber();
     // Create dir for screenshots
-    QDir(Settings::getSettingsDirPath()).mkdir("screenshots");
+    QDir(Settings::getInstance().getSettingsDirPath()).mkdir("screenshots");
 }
 
 void ChatForm::onScreenshotTaken(const QPixmap &pixmap) {
-    QTemporaryFile file(QDir(Settings::getSettingsDirPath() + QDir::separator() + "screenshots" + QDir::separator()).filePath("qTox-Screenshot-XXXXXXXX.png"));
+    QTemporaryFile file(Settings::getInstance().getSettingsDirPath()+"screenshots"+QDir::separator()+"qTox-Screenshot-XXXXXXXX.png");
 	if (!file.open())
 	{
 	    QMessageBox::warning(this, tr("Failed to open temporary file", "Temporary file for screenshot"),

src/widget/form/profileform.cpp

@@ -264,7 +264,7 @@ void ProfileForm::onExportClicked()
             GUI::showWarning(tr("Location not writable","Title of permissions popup"), tr("You do not have permission to write that location. Choose another, or cancel the save dialog.", "text of permissions popup"));
             return;
         }
-        if (!QFile::copy(QDir(Settings::getSettingsDirPath()).filePath(current), path))
+        if (!QFile::copy(Settings::getInstance().getSettingsDirPath()+current, path))
             GUI::showWarning(tr("Failed to copy file"), tr("The file you chose could not be written to."));
     }
 }

src/widget/toxsave.cpp

@@ -17,7 +17,6 @@
 #include "src/core/core.h"
 #include "src/misc/settings.h"
 #include <QCoreApplication>
-#include <QDir>
 #include <QFileInfo>
 
 bool toxSaveEventHandler(const QByteArray& eventData)
@@ -55,7 +54,7 @@ bool handleToxSave(const QString& path)
         return false;
     }
 
-    QString profilePath = QDir(Settings::getSettingsDirPath()).filePath(profile + Core::TOX_EXT);
+    QString profilePath = Settings::getInstance().getSettingsDirPath()+profile+Core::TOX_EXT;
 
     if (QFileInfo(profilePath).exists() && !GUI::askQuestion(QObject::tr("Profile already exists", "import confirm title"),
             QObject::tr("A profile named \"%1\" already exists. Do you want to erase it?", "import confirm text").arg(profile)))