Move ThreadSafeNetworkDiskCache to own file

src/CMakeLists.txt

@@ -19,6 +19,7 @@ set(SOURCES
   core/multisortfilterproxy.cpp
   core/musicstorage.cpp
   core/network.cpp
+  core/threadsafenetworkdiskcache.cpp
   core/networktimeouts.cpp
   core/networkproxyfactory.cpp
   core/qtfslistener.cpp
@@ -257,6 +258,7 @@ set(HEADERS
   core/filesystemwatcherinterface.h
   core/mergedproxymodel.h
   core/network.h
+  core/threadsafenetworkdiskcache.h
   core/networktimeouts.h
   core/qtfslistener.h
   core/songloader.h

src/core/network.cpp

@@ -21,89 +21,18 @@
 
 #include "config.h"
 
-#include <type_traits>
-
 #include <QtGlobal>
 #include <QObject>
 #include <QCoreApplication>
-#include <QStandardPaths>
 #include <QIODevice>
-#include <QMutex>
-#include <QVariant>
 #include <QByteArray>
 #include <QString>
-#include <QUrl>
 #include <QNetworkAccessManager>
 #include <QNetworkRequest>
 #include <QNetworkReply>
-#include <QNetworkDiskCache>
-#include <QNetworkCacheMetaData>
-#include <QAbstractNetworkCache>
 
 #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");
-#else
-    sCache->setCacheDirectory(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/networkcache");
-#endif
-  }
-
-}
-
-ThreadSafeNetworkDiskCache::~ThreadSafeNetworkDiskCache() {
-  if (this == sInstance) delete sCache;
-}
-
-qint64 ThreadSafeNetworkDiskCache::cacheSize() const {
-  QMutexLocker l(&sMutex);
-  return sCache->cacheSize();
-}
-
-QIODevice *ThreadSafeNetworkDiskCache::data(const QUrl &url) {
-  QMutexLocker l(&sMutex);
-  return sCache->data(url);
-}
-
-void ThreadSafeNetworkDiskCache::insert(QIODevice *device) {
-  QMutexLocker l(&sMutex);
-  sCache->insert(device);
-}
-
-QNetworkCacheMetaData ThreadSafeNetworkDiskCache::metaData(const QUrl &url) {
-  QMutexLocker l(&sMutex);
-  return sCache->metaData(url);
-}
-
-QIODevice *ThreadSafeNetworkDiskCache::prepare(const QNetworkCacheMetaData &metaData) {
-  QMutexLocker l(&sMutex);
-  return sCache->prepare(metaData);
-}
-
-bool ThreadSafeNetworkDiskCache::remove(const QUrl &url) {
-  QMutexLocker l(&sMutex);
-  return sCache->remove(url);
-}
-
-void ThreadSafeNetworkDiskCache::updateMetaData(const QNetworkCacheMetaData &metaData) {
-  QMutexLocker l(&sMutex);
-  sCache->updateMetaData(metaData);
-}
-
-void ThreadSafeNetworkDiskCache::clear() {
-  QMutexLocker l(&sMutex);
-  sCache->clear();
-}
+#include "threadsafenetworkdiskcache.h"
 
 NetworkAccessManager::NetworkAccessManager(QObject *parent)
     : QNetworkAccessManager(parent) {
@@ -144,4 +73,5 @@ QNetworkReply *NetworkAccessManager::createRequest(Operation op, const QNetworkR
   }
 
   return QNetworkAccessManager::createRequest(op, new_request, outgoingData);
+
 }

src/core/network.h

@@ -27,15 +27,10 @@
 #include <QtGlobal>
 #include <QObject>
 #include <QNetworkAccessManager>
-#include <QAbstractNetworkCache>
-#include <QMutex>
-#include <QUrl>
 #include <QNetworkRequest>
-#include <QNetworkCacheMetaData>
 
 class QIODevice;
 class QNetworkReply;
-class QNetworkDiskCache;
 
 class NetworkAccessManager : public QNetworkAccessManager {
   Q_OBJECT
@@ -47,25 +42,4 @@ class NetworkAccessManager : public QNetworkAccessManager {
   QNetworkReply *createRequest(Operation op, const QNetworkRequest &request, QIODevice *outgoingData) override;
 };
 
-class ThreadSafeNetworkDiskCache : public QAbstractNetworkCache {
- public:
-  explicit ThreadSafeNetworkDiskCache(QObject *parent);
-  ~ThreadSafeNetworkDiskCache() override;
-
-  qint64 cacheSize() const override;
-  QIODevice *data(const QUrl &url) override;
-  void insert(QIODevice *device) override;
-  QNetworkCacheMetaData metaData(const QUrl &url) override;
-  QIODevice *prepare(const QNetworkCacheMetaData &metaData) override;
-  bool remove(const QUrl &url) override;
-  void updateMetaData(const QNetworkCacheMetaData &metaData) override;
-
-  void clear() override;
-
- private:
-  static QMutex sMutex;
-  static ThreadSafeNetworkDiskCache *sInstance;
-  static QNetworkDiskCache *sCache;
-};
-
 #endif  // NETWORK_H

src/core/threadsafenetworkdiskcache.cpp

@@ -0,0 +1,108 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2019, 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 <QtGlobal>
+#include <QObject>
+#include <QCoreApplication>
+#include <QStandardPaths>
+#include <QIODevice>
+#include <QMutex>
+#include <QNetworkDiskCache>
+#include <QNetworkCacheMetaData>
+#include <QAbstractNetworkCache>
+#include <QUrl>
+
+#include "core/logging.h"
+#include "threadsafenetworkdiskcache.h"
+
+QMutex ThreadSafeNetworkDiskCache::sMutex;
+int ThreadSafeNetworkDiskCache::sInstances = 0;
+QNetworkDiskCache *ThreadSafeNetworkDiskCache::sCache = nullptr;
+
+ThreadSafeNetworkDiskCache::ThreadSafeNetworkDiskCache(QObject *parent) : QAbstractNetworkCache(parent) {
+
+  QMutexLocker l(&sMutex);
+  ++sInstances;
+
+  if (!sCache) {
+    sCache = new QNetworkDiskCache;
+#ifdef Q_OS_WIN32
+    sCache->setCacheDirectory(QStandardPaths::writableLocation(QStandardPaths::TempLocation) + "/strawberry/networkcache");
+#else
+    sCache->setCacheDirectory(QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/networkcache");
+#endif
+  }
+
+}
+
+ThreadSafeNetworkDiskCache::~ThreadSafeNetworkDiskCache() {
+
+  QMutexLocker l(&sMutex);
+  --sInstances;
+
+  if (sCache && sInstances == 0) {
+    sCache->deleteLater();
+    sCache = nullptr;
+  }
+
+}
+
+qint64 ThreadSafeNetworkDiskCache::cacheSize() const {
+  QMutexLocker l(&sMutex);
+  return sCache->cacheSize();
+}
+
+QIODevice *ThreadSafeNetworkDiskCache::data(const QUrl &url) {
+  QMutexLocker l(&sMutex);
+  return sCache->data(url);
+}
+
+void ThreadSafeNetworkDiskCache::insert(QIODevice *device) {
+  QMutexLocker l(&sMutex);
+  sCache->insert(device);
+}
+
+QNetworkCacheMetaData ThreadSafeNetworkDiskCache::metaData(const QUrl &url) {
+  QMutexLocker l(&sMutex);
+  return sCache->metaData(url);
+}
+
+QIODevice *ThreadSafeNetworkDiskCache::prepare(const QNetworkCacheMetaData &metaData) {
+  QMutexLocker l(&sMutex);
+  return sCache->prepare(metaData);
+}
+
+bool ThreadSafeNetworkDiskCache::remove(const QUrl &url) {
+  QMutexLocker l(&sMutex);
+  return sCache->remove(url);
+}
+
+void ThreadSafeNetworkDiskCache::updateMetaData(const QNetworkCacheMetaData &metaData) {
+  QMutexLocker l(&sMutex);
+  sCache->updateMetaData(metaData);
+}
+
+void ThreadSafeNetworkDiskCache::clear() {
+  QMutexLocker l(&sMutex);
+  sCache->clear();
+}

src/core/threadsafenetworkdiskcache.h

@@ -0,0 +1,61 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2019, 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/>.
+ *
+ */
+
+#ifndef THREADSAFENETWORKDISKCACHE_H
+#define THREADSAFENETWORKDISKCACHE_H
+
+#include "config.h"
+
+#include <QtGlobal>
+#include <QObject>
+#include <QAbstractNetworkCache>
+#include <QMutex>
+#include <QUrl>
+#include <QNetworkCacheMetaData>
+
+class QIODevice;
+class QNetworkDiskCache;
+
+class ThreadSafeNetworkDiskCache : public QAbstractNetworkCache {
+ Q_OBJECT
+
+ public:
+  explicit ThreadSafeNetworkDiskCache(QObject *parent);
+  ~ThreadSafeNetworkDiskCache() override;
+
+  qint64 cacheSize() const override;
+  QIODevice *data(const QUrl &url) override;
+  void insert(QIODevice *device) override;
+  QNetworkCacheMetaData metaData(const QUrl &url) override;
+  QIODevice *prepare(const QNetworkCacheMetaData &metaData) override;
+  bool remove(const QUrl &url) override;
+  void updateMetaData(const QNetworkCacheMetaData &metaData) override;
+
+ public slots:
+  void clear() override;
+
+ private:
+  static QMutex sMutex;
+  static int sInstances;
+  static QNetworkDiskCache *sCache;
+};
+
+#endif  // THREADSAFENETWORKDISKCACHE_H