Add sync timer to cache to avoid saving everything at shutdown (runs

once a minute)

src/libtomahawk/infosystem/infosystemcache.cpp

@@ -32,7 +32,8 @@ namespace InfoSystem
 
 
 InfoSystemCache::InfoSystemCache( QObject* parent )
-    : QObject(parent)
+    : QObject( parent )
+    , m_syncTimer( this )
     , m_cacheRemainingToLoad( 0 )
 {
     qDebug() << Q_FUNC_INFO;
@@ -49,6 +50,9 @@ InfoSystemCache::InfoSystemCache( QObject* parent )
             QMetaObject::invokeMethod( this, "loadCache", Qt::QueuedConnection, Q_ARG( Tomahawk::InfoSystem::InfoType, type ), Q_ARG( QString, cacheFile ) );
         }
     }
+    m_syncTimer.setInterval( 60000 );
+    m_syncTimer.setSingleShot( false );
+    connect( &m_syncTimer, SIGNAL( timeout() ), SLOT( syncTimerFired() ) );
 }
 
 
@@ -69,6 +73,27 @@ InfoSystemCache::~InfoSystemCache()
 }
 
 
+void
+InfoSystemCache::syncTimerFired()
+{
+    qDebug() << Q_FUNC_INFO;
+    if ( m_cacheRemainingToLoad > 0 )
+        return;
+
+    qDebug() << "Syncing infosystemcache to disk";
+    QString cacheBaseDir = QDesktopServices::storageLocation( QDesktopServices::CacheLocation );
+    for ( int i = 0; i <= InfoNoInfo; i++ )
+    {
+        InfoType type = (InfoType)(i);
+        if ( m_dirtySet.contains( type ) && m_dataCache.contains( type ) )
+        {
+            QString cacheDir = cacheBaseDir + "/InfoSystemCache/" + QString::number( i );
+            saveCache( type, cacheDir );
+        }
+    }
+}
+
+
 void
 InfoSystemCache::getCachedInfoSlot( Tomahawk::InfoSystem::InfoCriteriaHash criteria, qint64 newMaxAge, QString caller, Tomahawk::InfoSystem::InfoType type, QVariant input, Tomahawk::InfoSystem::InfoCustomData customData )
 {

src/libtomahawk/infosystem/infosystemcache.h

@@ -22,6 +22,7 @@
 #include <QDateTime>
 #include <QObject>
 #include <QtDebug>
+#include <QTimer>
 
 #include "infosystem.h"
 
@@ -49,6 +50,7 @@ public slots:
     void updateCacheSlot( Tomahawk::InfoSystem::InfoCriteriaHash criteria, qint64 maxAge, Tomahawk::InfoSystem::InfoType type, QVariant output );
 
 private slots:
+    void syncTimerFired();
     void loadCache( Tomahawk::InfoSystem::InfoType type, const QString &cacheFile );
     void saveCache( Tomahawk::InfoSystem::InfoType type, const QString &cacheDir );
 
@@ -57,6 +59,7 @@ private:
     QHash< InfoType, QHash< InfoCriteriaHash, QDateTime > > m_insertTimeCache;
     QHash< InfoType, QHash< InfoCriteriaHash, QDateTime > > m_maxTimeCache;
     QSet< InfoType > m_dirtySet;
+    QTimer m_syncTimer;
     int m_cacheRemainingToLoad;
 };