commit 327ec9a67af653467b670115ebb3e26b00183c1d
Author: Sebastian Trueg <trueg@kde.org>
Date:   Thu Jul 7 17:33:23 2011 +0200

    Throttle the IndexCleaner the same way we do with the IndexScheduler.
    
    BUG: 276593

diff --git a/nepomuk/services/strigi/indexcleaner.cpp b/nepomuk/services/strigi/indexcleaner.cpp
index 5c604ab..9198d0b 100644
--- a/nepomuk/services/strigi/indexcleaner.cpp
+++ b/nepomuk/services/strigi/indexcleaner.cpp
@@ -47,7 +47,8 @@ using namespace Soprano::Vocabulary;
 
 
 Nepomuk::IndexCleaner::IndexCleaner(QObject* parent)
-    : KJob(parent)
+    : KJob(parent),
+      m_delay(0)
 {
     setCapabilities( Suspendable );
 }
@@ -268,7 +269,7 @@ void Nepomuk::IndexCleaner::slotRemoveResourcesDone(KJob* job)
 
     QMutexLocker lock(&m_stateMutex);
     if( !m_suspended ) {
-        clearNextBatch();
+        QTimer::singleShot(m_delay, this, SLOT(clearNextBatch()));
     }
 }
 
@@ -313,4 +314,9 @@ bool Nepomuk::IndexCleaner::doResume()
     return true;
 }
 
+void Nepomuk::IndexCleaner::setDelay(int msecs)
+{
+    m_delay = msecs;
+}
+
 #include "indexcleaner.moc"
diff --git a/nepomuk/services/strigi/indexcleaner.h b/nepomuk/services/strigi/indexcleaner.h
index e1c38ca..bf0713e 100644
--- a/nepomuk/services/strigi/indexcleaner.h
+++ b/nepomuk/services/strigi/indexcleaner.h
@@ -41,6 +41,16 @@ namespace Nepomuk {
         virtual bool doSuspend();
         virtual bool doResume();
 
+    public slots:
+        /**
+         * Set the delay between the cleanup queries.
+         * Used for throtteling the cleaner to not grab too
+         * many resources. Default is 0.
+         *
+         * \sa IndexScheduler::setIndexingSpeed()
+         */
+        void setDelay(int msecs);
+
     private slots:
         void clearNextBatch();
         void slotRemoveResourcesDone(KJob* job);
@@ -52,6 +62,7 @@ namespace Nepomuk {
 
         QMutex m_stateMutex;
         bool m_suspended;
+        int m_delay;
     };
 }
 
diff --git a/nepomuk/services/strigi/indexscheduler.cpp b/nepomuk/services/strigi/indexscheduler.cpp
index 3c92657..f3c6c36 100644
--- a/nepomuk/services/strigi/indexscheduler.cpp
+++ b/nepomuk/services/strigi/indexscheduler.cpp
@@ -208,7 +208,7 @@ Nepomuk::IndexScheduler::IndexScheduler( QObject* parent )
     : QObject( parent ),
       m_suspended( false ),
       m_indexing( false ),
-      m_speed( FullSpeed )
+      m_indexingDelay( 0 )
 {
     m_cleaner = new IndexCleaner(this);
     connect( m_cleaner, SIGNAL(finished(KJob*)), this, SLOT(slotCleaningDone()) );
@@ -266,7 +266,13 @@ void Nepomuk::IndexScheduler::setSuspended( bool suspended )
 void Nepomuk::IndexScheduler::setIndexingSpeed( IndexingSpeed speed )
 {
     kDebug() << speed;
-    m_speed = speed;
+    m_indexingDelay = 0;
+    if ( speed != FullSpeed ) {
+        m_indexingDelay = (speed == ReducedSpeed) ? s_reducedSpeedDelay : s_snailPaceDelay;
+    }
+    if( m_cleaner ) {
+        m_cleaner->setDelay(m_indexingDelay);
+    }
 }
 
 
@@ -481,11 +487,7 @@ bool Nepomuk::IndexScheduler::analyzeDir( const QString& dir_, Nepomuk::IndexSch
 void Nepomuk::IndexScheduler::callDoIndexing()
 {
     if( !m_suspended ) {
-        uint delay = 0;
-        if ( m_speed != FullSpeed ) {
-            delay = (m_speed == ReducedSpeed) ? s_reducedSpeedDelay : s_snailPaceDelay;
-        }
-        QTimer::singleShot( delay, this, SLOT(doIndexing()) );
+        QTimer::singleShot( m_indexingDelay, this, SLOT(doIndexing()) );
     }
 }
 
diff --git a/nepomuk/services/strigi/indexscheduler.h b/nepomuk/services/strigi/indexscheduler.h
index 9ae1f18..8756206 100644
--- a/nepomuk/services/strigi/indexscheduler.h
+++ b/nepomuk/services/strigi/indexscheduler.h
@@ -121,8 +121,6 @@ namespace Nepomuk {
             SnailPace
         };
 
-        IndexingSpeed currentSpeed() const { return m_speed; }
-
     public Q_SLOTS:
         void suspend();
         void resume();
@@ -226,7 +224,7 @@ namespace Nepomuk {
         QString m_currentFolder;
         KUrl m_currentUrl;
 
-        IndexingSpeed m_speed;
+        int m_indexingDelay;
         IndexCleaner* m_cleaner;
     };