Fix memory leaks

src/CMakeLists.txt

@@ -112,6 +112,7 @@ set(SOURCES
   core/windows7thumbbar.cpp
   core/screensaver.cpp
   core/scopedtransaction.cpp
+  core/translations.cpp
 
   engine/enginetype.cpp
   engine/enginebase.cpp

src/collection/collection.cpp

@@ -68,6 +68,7 @@ SCollection::~SCollection() {
   watcher_->deleteLater();
   watcher_thread_->exit();
   watcher_thread_->wait(5000 /* five seconds */);
+  backend_->deleteLater();
 }
 
 void SCollection::Init() {

src/core/database.cpp

@@ -210,6 +210,7 @@ int Database::FTSNext(sqlite3_tokenizer_cursor *cursor, const char* *token, int
 
 void Database::StaticInit() {
 
+  if (sFTSTokenizer) return;
   sFTSTokenizer = new sqlite3_tokenizer_module;
   sFTSTokenizer->iVersion = 0;
   sFTSTokenizer->xCreate = &Database::FTSCreate;
@@ -241,6 +242,8 @@ Database::Database(Application *app, QObject *parent, const QString &database_na
 
 }
 
+Database::~Database() {}
+
 QSqlDatabase Database::Connect() {
 
   QMutexLocker l(&connect_mutex_);
@@ -273,7 +276,7 @@ QSqlDatabase Database::Connect() {
   }
 
   // Find Sqlite3 functions in the Qt plugin.
-  StaticInit();
+  if (!sFTSTokenizer) StaticInit();
 
   {
 

src/core/database.h

@@ -51,6 +51,7 @@ class Database : public QObject {
 
  public:
   Database(Application *app, QObject *parent = nullptr, const QString &database_name = QString());
+  ~Database();
 
   struct AttachedDatabase {
     AttachedDatabase() {}

src/core/mainwindow.cpp

@@ -1799,7 +1799,7 @@ void MainWindow::SongSaveComplete(TagReaderReply *reply, const QPersistentModelI
   if (reply->is_successful() && index.isValid()) {
     app_->playlist_manager()->current()->ReloadItems(QList<int>()<< index.row());
   }
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  reply->deleteLater();
 
 }
 

src/core/network.cpp

@@ -39,12 +39,15 @@
 #include "network.h"
 
 QMutex ThreadSafeNetworkDiskCache::sMutex;
+ThreadSafeNetworkDiskCache *ThreadSafeNetworkDiskCache::sInstance = nullptr;
 QNetworkDiskCache *ThreadSafeNetworkDiskCache::sCache = nullptr;
 
 ThreadSafeNetworkDiskCache::ThreadSafeNetworkDiskCache(QObject *parent)
 : QAbstractNetworkCache(parent) {
+
   QMutexLocker l(&sMutex);
   if (!sCache) {
+    sInstance = this;
     sCache = new QNetworkDiskCache;
 #ifdef Q_OS_WIN32
     sCache->setCacheDirectory(QStandardPaths::writableLocation(QStandardPaths::TempLocation) + "/strawberry/networkcache");
@@ -52,6 +55,11 @@ ThreadSafeNetworkDiskCache::ThreadSafeNetworkDiskCache(QObject *parent)
     sCache->setCacheDirectory(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/networkcache");
 #endif
   }
+
+}
+
+ThreadSafeNetworkDiskCache::~ThreadSafeNetworkDiskCache() {
+  if (this == sInstance) delete sCache;
 }
 
 qint64 ThreadSafeNetworkDiskCache::cacheSize() const {

src/core/network.h

@@ -47,6 +47,7 @@ class QTimerEvent;
 class ThreadSafeNetworkDiskCache : public QAbstractNetworkCache {
  public:
   explicit ThreadSafeNetworkDiskCache(QObject *parent);
+  ~ThreadSafeNetworkDiskCache();
 
   qint64 cacheSize() const;
   QIODevice *data(const QUrl &url);
@@ -60,6 +61,7 @@ class ThreadSafeNetworkDiskCache : public QAbstractNetworkCache {
 
  private:
   static QMutex sMutex;
+  static ThreadSafeNetworkDiskCache *sInstance;
   static QNetworkDiskCache *sCache;
 };
 

src/core/qtfslistener.cpp

@@ -20,8 +20,11 @@
 
 #include "config.h"
 
+#include <QFileSystemWatcher>
 #include <QString>
 
+#include "core/logging.h"
+
 #include "filesystemwatcherinterface.h"
 #include "qtfslistener.h"
 
@@ -33,9 +36,7 @@ QtFSListener::QtFSListener(QObject *parent) : FileSystemWatcherInterface(parent)
 
 void QtFSListener::AddPath(const QString &path) { watcher_.addPath(path); }
 
-void QtFSListener::RemovePath(const QString &path) {
-  watcher_.removePath(path);
-}
+void QtFSListener::RemovePath(const QString &path) { watcher_.removePath(path); }
 
 void QtFSListener::Clear() {
   watcher_.removePaths(watcher_.directories());

src/core/translations.cpp

@@ -0,0 +1,50 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2019, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <QCoreApplication>
+#include <QTranslator>
+#include <QString>
+
+#include "translations.h"
+#include "core/potranslator.h"
+
+Translations::Translations() {}
+Translations::~Translations() {
+
+  for (QTranslator *t : translations_) {
+    QCoreApplication::removeTranslator(t);
+    delete t;
+  }
+
+}
+
+void Translations::LoadTranslation(const QString &prefix, const QString &path, const QString &language) {
+
+  QTranslator *t = new PoTranslator;
+  if (t->load(prefix + "_" + language, path)) {
+    QCoreApplication::installTranslator(t);
+    translations_ << t;
+  }
+  else {
+    delete t;
+  }
+
+}

src/core/translations.h

@@ -0,0 +1,36 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2019, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <QObject>
+#include <QTranslator>
+#include <QList>
+#include <QString>
+
+class Translations : public QObject {
+ public:
+  Translations();
+  ~Translations();
+  void LoadTranslation(const QString &prefix, const QString &path, const QString &language);
+
+ private:
+  QList<QTranslator*> translations_;
+
+};

src/core/utilities.cpp

@@ -60,9 +60,6 @@
 #include <QtEvents>
 #include <QMessageBox>
 #include <QtDebug>
-#ifdef HAVE_TRANSLATIONS
-#  include <QTranslator>
-#endif
 
 #ifdef Q_OS_LINUX
 #  include <unistd.h>
@@ -101,10 +98,6 @@
 #  include "scoped_cftyperef.h"
 #endif
 
-#ifdef HAVE_TRANSLATIONS
-#  include "potranslator.h"
-#endif
-
 namespace Utilities {
 
 static QString tr(const char *str) {
@@ -821,29 +814,6 @@ QString UnicodeToAscii(const QString &unicode) {
 
 }
 
-#ifdef HAVE_TRANSLATIONS
-
-QString SystemLanguageName() {
-
-  QString system_language = QLocale::system().uiLanguages().empty() ? QLocale::system().name() : QLocale::system().uiLanguages().first();
-  // uiLanguages returns strings with "-" as separators for language/region; however QTranslator needs "_" separators
-  system_language.replace("-", "_");
-
-  return system_language;
-
-}
-
-void LoadTranslation(const QString &prefix, const QString &path, const QString &language) {
-
-  QTranslator *t = new PoTranslator;
-  if (t->load(prefix + "_" + language, path))
-    QCoreApplication::installTranslator(t);
-  else
-    delete t;
-
-}
-#endif
-
 }  // namespace Utilities
 
 ScopedWCharArray::ScopedWCharArray(const QString &str)

src/core/utilities.h

@@ -157,11 +157,6 @@ QString DesktopEnvironment();
 
 QString UnicodeToAscii(const QString &unicode);
 
-#ifdef HAVE_TRANSLATIONS
-QString SystemLanguageName();
-void LoadTranslation(const QString &prefix, const QString &path, const QString &language);
-#endif
-
 }  // namespace
 
 class ScopedWCharArray {

src/covermanager/coverproviders.cpp

@@ -31,6 +31,14 @@
 
 CoverProviders::CoverProviders(QObject *parent) : QObject(parent) {}
 
+CoverProviders::~CoverProviders() {
+
+  while (!cover_providers_.isEmpty()) {
+    delete cover_providers_.firstKey();
+  }
+
+}
+
 void CoverProviders::AddProvider(CoverProvider *provider) {
 
   {

src/covermanager/coverproviders.h

@@ -42,6 +42,7 @@ class CoverProviders : public QObject {
 
  public:
   explicit CoverProviders(QObject *parent = nullptr);
+  ~CoverProviders();
 
   // Lets a cover provider register itself in the repository.
   void AddProvider(CoverProvider *provider);

src/device/devicelister.cpp

@@ -46,6 +46,7 @@ DeviceLister::~DeviceLister() {
   if (thread_) {
     thread_->quit();
     thread_->wait(1000);
+    thread_->deleteLater();
   }
 
 }

src/dialogs/edittagdialog.cpp

@@ -910,6 +910,6 @@ void EditTagDialog::SongSaveComplete(TagReaderReply *reply, const QString &filen
 
   if (pending_ <= 0) AcceptFinished();
 
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  reply->deleteLater();
 
 }

src/engine/gststartup.cpp

@@ -43,6 +43,7 @@ GstStartup::GstStartup(QObject *parent) : QObject(parent) {
 }
 
 GstStartup::~GstStartup() {
+  //gst_deinit();
 }
 
 void GstStartup::InitialiseGStreamer() {

src/internet/internetservices.cpp

@@ -31,12 +31,18 @@
 #include "internetservice.h"
 
 InternetServices::InternetServices(QObject *parent) : QObject(parent) {}
-InternetServices::~InternetServices() {}
+
+InternetServices::~InternetServices() {
+
+  while (!services_.isEmpty()) {
+    delete services_.take(services_.firstKey());
+  }
+
+}
 
 void InternetServices::AddService(InternetService *service) {
 
   services_.insert(service->source(), service);
-  connect(service, SIGNAL(destroyed()), SLOT(ServiceDeleted()));
   if (service->has_initial_load_settings()) service->InitialLoadSettings();
   else service->ReloadSettings();
 
@@ -50,12 +56,7 @@ void InternetServices::RemoveService(InternetService *service) {
   services_.remove(service->source());
   disconnect(service, 0, this, 0);
 
-}
-
-void InternetServices::ServiceDeleted() {
-
-  InternetService *service = qobject_cast<InternetService*>(sender());
-  if (service) RemoveService(service);
+  qLog(Debug) << "Removed internet service" << service->name();
 
 }
 

src/internet/internetservices.h

@@ -48,9 +48,6 @@ class InternetServices : public QObject {
   void RemoveService(InternetService *service);
   void ReloadSettings();
 
- private slots:
-  void ServiceDeleted();
-
  private:
   QMap<Song::Source, InternetService*> services_;
 

src/lyrics/lyricsproviders.cpp

@@ -32,6 +32,14 @@
 
 LyricsProviders::LyricsProviders(QObject *parent) : QObject(parent) {}
 
+LyricsProviders::~LyricsProviders() {
+
+  while (!lyrics_providers_.isEmpty()) {
+    delete lyrics_providers_.firstKey();
+  }
+
+}
+
 void LyricsProviders::AddProvider(LyricsProvider *provider) {
 
   {

src/lyrics/lyricsproviders.h

@@ -39,6 +39,8 @@ class LyricsProviders : public QObject {
 
  public:
   explicit LyricsProviders(QObject *parent = nullptr);
+  ~LyricsProviders();
+
   void AddProvider(LyricsProvider *provider);
   void RemoveProvider(LyricsProvider *provider);
   QList<LyricsProvider*> List() const { return lyrics_providers_.keys(); }

src/main.cpp

@@ -90,7 +90,7 @@
 #include "core/networkproxyfactory.h"
 #include "core/scangiomodulepath.h"
 #ifdef HAVE_TRANSLATIONS
-#  include "core/potranslator.h"
+#  include "core/translations.h"
 #endif
 #include "settings/behavioursettingspage.h"
 
@@ -228,12 +228,18 @@ int main(int argc, char* argv[]) {
     s.endGroup();
   }
 
-  const QString language = override_language.isEmpty() ? Utilities::SystemLanguageName() : override_language;
+  QString system_language = QLocale::system().uiLanguages().empty() ? QLocale::system().name() : QLocale::system().uiLanguages().first();
+  // uiLanguages returns strings with "-" as separators for language/region; however QTranslator needs "_" separators
+  system_language.replace("-", "_");
 
-  Utilities::LoadTranslation("qt", QLibraryInfo::location(QLibraryInfo::TranslationsPath), language);
-  Utilities::LoadTranslation("strawberry", ":/translations", language);
-  Utilities::LoadTranslation("strawberry", a.applicationDirPath(), language);
-  Utilities::LoadTranslation("strawberry", QDir::currentPath(), language);
+  const QString language = override_language.isEmpty() ? system_language : override_language;
+
+  std::unique_ptr<Translations> translations(new Translations);
+
+  translations->LoadTranslation("qt", QLibraryInfo::location(QLibraryInfo::TranslationsPath), language);
+  translations->LoadTranslation("strawberry", ":/translations", language);
+  translations->LoadTranslation("strawberry", a.applicationDirPath(), language);
+  translations->LoadTranslation("strawberry", QDir::currentPath(), language);
 #endif
 
   Application app;

src/moodbar/moodbarproxystyle.cpp

@@ -24,6 +24,7 @@
 #include <QStyleOptionComplex>
 #include <QStyleOptionSlider>
 #include <QTimeLine>
+#include <QStyle>
 #include <QEvent>
 #include <QContextMenuEvent>
 
@@ -59,8 +60,11 @@ MoodbarProxyStyle::MoodbarProxyStyle(Application* app, QSlider* slider)
 
   connect(app, SIGNAL(SettingsChanged()), SLOT(ReloadSettings()));
   ReloadSettings();
+
 }
 
+MoodbarProxyStyle::~MoodbarProxyStyle() {}
+
 void MoodbarProxyStyle::ReloadSettings() {
 
   QSettings s;

src/moodbar/moodbarproxystyle.h

@@ -38,6 +38,7 @@ class MoodbarProxyStyle : public QProxyStyle {
 
  public:
   MoodbarProxyStyle(Application* app, QSlider* slider);
+  ~MoodbarProxyStyle();
 
   // QProxyStyle
   void drawComplexControl(ComplexControl control, const QStyleOptionComplex* option, QPainter* painter, const QWidget* widget) const;

src/playlist/playlist.cpp

@@ -399,8 +399,7 @@ void Playlist::SongSaveComplete(TagReaderReply *reply, const QPersistentModelInd
       emit Error(tr("An error occurred writing metadata to '%1'").arg(QString::fromStdString(reply->request_message().save_file_request().filename())));
     }
   }
-
-  metaObject()->invokeMethod(reply, "deleteLater", Qt::QueuedConnection);
+  reply->deleteLater();
 
 }
 

src/playlist/playlistdelegates.cpp

@@ -395,12 +395,17 @@ TagCompleter::TagCompleter(CollectionBackend *backend, Playlist::Column column,
 
 }
 
+TagCompleter::~TagCompleter() {
+  delete model();
+}
+
 void TagCompleter::ModelReady(QFuture<TagCompletionModel*> future) {
 
   TagCompletionModel *model = future.result();
   setModel(model);
   setCaseSensitivity(Qt::CaseInsensitive);
   editor_->setCompleter(this);
+
 }
 
 QWidget *TagCompletionItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem&, const QModelIndex&) const {
@@ -409,6 +414,7 @@ QWidget *TagCompletionItemDelegate::createEditor(QWidget *parent, const QStyleOp
   new TagCompleter(backend_, column_, editor);
 
   return editor;
+
 }
 
 QString NativeSeparatorsDelegate::displayText(const QVariant &value, const QLocale&) const {

src/playlist/playlistdelegates.h

@@ -144,6 +144,7 @@ class TagCompleter : public QCompleter {
 
 public:
   TagCompleter(CollectionBackend *backend, Playlist::Column column, QLineEdit *editor);
+  ~TagCompleter();
 
  private slots:
   void ModelReady(QFuture<TagCompletionModel*> future);

src/qobuz/qobuzservice.cpp

@@ -180,6 +180,10 @@ QobuzService::~QobuzService() {
     stream_url_req->deleteLater();
   }
 
+  artists_collection_backend_->deleteLater();
+  albums_collection_backend_->deleteLater();
+  songs_collection_backend_->deleteLater();
+
 }
 
 void QobuzService::ShowConfig() {

src/scrobbler/scrobblerservices.cpp

@@ -32,14 +32,19 @@
 
 ScrobblerServices::ScrobblerServices(QObject *parent) : QObject(parent) {}
 
-ScrobblerServices::~ScrobblerServices() {}
+ScrobblerServices::~ScrobblerServices() {
+
+  while (!scrobbler_services_.isEmpty()) {
+    delete scrobbler_services_.take(scrobbler_services_.firstKey());
+  }
+
+}
 
 void ScrobblerServices::AddService(ScrobblerService *service) {
 
   {
     QMutexLocker locker(&mutex_);
     scrobbler_services_.insert(service->name(), service);
-    connect(service, SIGNAL(destroyed()), SLOT(ServiceDestroyed()));
   }
 
   qLog(Debug) << "Registered scrobbler service" << service->name();
@@ -60,13 +65,6 @@ void ScrobblerServices::RemoveService(ScrobblerService *service) {
 
 }
 
-void ScrobblerServices::ServiceDestroyed() {
-
-  ScrobblerService *service = static_cast<ScrobblerService*>(sender());
-  RemoveService(service);
-
-}
-
 int ScrobblerServices::NextId() { return next_id_.fetchAndAddRelaxed(1); }
 
 ScrobblerService *ScrobblerServices::ServiceByName(const QString &name) {

src/scrobbler/scrobblerservices.h

@@ -53,9 +53,6 @@ class ScrobblerServices : public QObject {
     return static_cast<T*>(this->ServiceByName(T::kName));
   }
 
- private slots:
-  void ServiceDestroyed();
-
  private:
   Q_DISABLE_COPY(ScrobblerServices);
 

src/subsonic/subsonicservice.cpp

@@ -94,7 +94,9 @@ SubsonicService::SubsonicService(Application *app, QObject *parent)
 
 }
 
-SubsonicService::~SubsonicService() {}
+SubsonicService::~SubsonicService() {
+  collection_backend_->deleteLater();
+}
 
 void SubsonicService::ShowConfig() {
   app_->OpenSettingsDialogAtPage(SettingsDialog::Page_Subsonic);

src/tidal/tidalservice.cpp

@@ -186,6 +186,10 @@ TidalService::~TidalService() {
     stream_url_req->deleteLater();
   }
 
+  artists_collection_backend_->deleteLater();
+  albums_collection_backend_->deleteLater();
+  songs_collection_backend_->deleteLater();
+
 }
 
 void TidalService::ShowConfig() {

src/widgets/trackslider.cpp

@@ -72,11 +72,14 @@ TrackSlider::TrackSlider(QWidget* parent)
 
 TrackSlider::~TrackSlider() {
   delete ui_;
+#ifdef HAVE_MOODBAR
+  if (moodbar_style_) moodbar_style_->deleteLater();
+#endif
 }
 
 void TrackSlider::SetApplication(Application* app) {
 #ifdef HAVE_MOODBAR
-  moodbar_style_ = new MoodbarProxyStyle(app, ui_->slider);
+  if (!moodbar_style_) moodbar_style_ = new MoodbarProxyStyle(app, ui_->slider);
 #endif
 }