* Made Pipeline more robust (mutex-protection).

* Use _CLNEW instead of the vanilla "new" when allocating Lucene's objects.
* Limit WelcomeWidget's initial recently played tracks to 50 songs.

src/libtomahawk/database/fuzzyindex.cpp

@@ -19,7 +19,7 @@ FuzzyIndex::FuzzyIndex( DatabaseImpl& db )
     bool create = !lucene::index::IndexReader::indexExists( lucenePath.toStdString().c_str() );
     m_luceneDir = lucene::store::FSDirectory::getDirectory( lucenePath.toStdString().c_str(), create );
 
-    m_analyzer = new lucene::analysis::SimpleAnalyzer();
+    m_analyzer = _CLNEW lucene::analysis::SimpleAnalyzer();
 }
 
 
@@ -68,13 +68,13 @@ FuzzyIndex::appendFields( const QString& table, const QMap< unsigned int, QStrin
         QString name = it.value();
 
         {
-            lucene::document::Field* field = new lucene::document::Field( table.toStdWString().c_str(), name.toStdWString().c_str(),
+            lucene::document::Field* field = _CLNEW lucene::document::Field( table.toStdWString().c_str(), name.toStdWString().c_str(),
                                                                           lucene::document::Field::STORE_YES | lucene::document::Field::INDEX_UNTOKENIZED );
             doc.add( *field );
         }
         
         {
-            lucene::document::Field* field = new lucene::document::Field( _T( "id" ), QString::number( id ).toStdWString().c_str(),
+            lucene::document::Field* field = _CLNEW lucene::document::Field( _T( "id" ), QString::number( id ).toStdWString().c_str(),
             lucene::document::Field::STORE_YES | lucene::document::Field::INDEX_NO );
             doc.add( *field );
         }
@@ -109,7 +109,7 @@ FuzzyIndex::search( const QString& table, const QString& name )
         }
 
         m_luceneReader = lucene::index::IndexReader::open( m_luceneDir );
-        m_luceneSearcher = new lucene::search::IndexSearcher( m_luceneReader );
+        m_luceneSearcher = _CLNEW lucene::search::IndexSearcher( m_luceneReader );
     }
 
     if ( name.isEmpty() )
@@ -119,8 +119,7 @@ FuzzyIndex::search( const QString& table, const QString& name )
     lucene::queryParser::QueryParser parser( table.toStdWString().c_str(), m_analyzer );
     lucene::search::Hits* hits = 0;
 
-    lucene::search::FuzzyQuery* qry = new lucene::search::FuzzyQuery( new lucene::index::Term( table.toStdWString().c_str(),
+    lucene::search::FuzzyQuery* qry = _CLNEW lucene::search::FuzzyQuery( _CLNEW lucene::index::Term( table.toStdWString().c_str(), name.toStdWString().c_str() ) );
-                                                                                               name.toStdWString().c_str() ) );
     hits = m_luceneSearcher->search( qry );
 
     for ( unsigned int i = 0; i < hits->length(); i++ )

src/libtomahawk/pipeline.cpp

@@ -85,7 +85,6 @@ Pipeline::resolve( const QList<query_ptr>& qlist, bool prioritized )
                 m_qids.insert( q->id(), q );
             }
         }
-    }
 
         if ( prioritized )
         {
@@ -96,6 +95,7 @@ Pipeline::resolve( const QList<query_ptr>& qlist, bool prioritized )
         {
             m_queries_pending.append( qlist );
         }
+    }
 
     if ( m_index_ready && m_queries_pending.count() )
         shuntNext();
@@ -161,6 +161,11 @@ Pipeline::reportResults( QID qid, const QList< result_ptr >& results )
 void
 Pipeline::shuntNext()
 {
+    query_ptr q;
+
+    {
+        QMutexLocker lock( &m_mut );
+        
         if ( m_queries_pending.isEmpty() )
         {
             emit idle();
@@ -171,9 +176,10 @@ Pipeline::shuntNext()
             Since resolvers are async, we now dispatch to the highest weighted ones
             and after timeout, dispatch to next highest etc, aborting when solved
         */
-
+        q = m_queries_pending.takeFirst();
-    query_ptr q = m_queries_pending.takeFirst();
         q->setLastPipelineWeight( 101 );
+    }
+    
     shunt( q ); // bump into next stage of pipeline (highest weights are 100)
 }
 

src/libtomahawk/result.cpp

@@ -6,7 +6,8 @@ using namespace Tomahawk;
 
 
 Result::Result( const QVariant& v, const collection_ptr& collection )
-    : m_v( v )
+    : QObject()
+    , m_v( v )
     , m_collection( collection )
 {
     QVariantMap m = m_v.toMap();

src/libtomahawk/widgets/welcomewidget.cpp

@@ -27,7 +27,7 @@ WelcomeWidget::WelcomeWidget( QWidget* parent )
 
     m_tracksModel = new PlaylistModel( ui->tracksView );
     ui->tracksView->setModel( m_tracksModel );
-    m_tracksModel->loadHistory( Tomahawk::source_ptr() );
+    m_tracksModel->loadHistory( Tomahawk::source_ptr(), 50 );
 
     connect( SourceList::instance(), SIGNAL( sourceAdded( Tomahawk::source_ptr ) ), SLOT( onSourceAdded( Tomahawk::source_ptr ) ) );