Clean up references in RN_NETs when garbage collecting CN_ITEMs.

pcbnew/connectivity/connectivity_algo.cpp

@@ -213,6 +213,13 @@ bool CN_CONNECTIVITY_ALGO::Add( BOARD_ITEM* aItem )
 }
 
 
+void CN_CONNECTIVITY_ALGO::RemoveInvalidRefs()
+{
+    for( CN_ITEM* item : m_itemList )
+        item->RemoveInvalidRefs();
+}
+
+
 void CN_CONNECTIVITY_ALGO::searchConnections()
 {
 #ifdef PROFILE
@@ -221,13 +228,12 @@ void CN_CONNECTIVITY_ALGO::searchConnections()
     std::vector<CN_ITEM*> garbage;
     garbage.reserve( 1024 );
 
-    m_itemList.RemoveInvalidItems( garbage );
+    m_parentConnectivityData->RemoveInvalidRefs();
 
     if( m_isLocal )
-    {
+        m_globalConnectivityData->RemoveInvalidRefs();
-        for( CN_ITEM* item : m_globalConnectivity->m_itemList )
+
-            item->RemoveInvalidRefs();
+    m_itemList.RemoveInvalidItems( garbage );
-    }
 
     for( CN_ITEM* item : garbage )
         delete item;
@@ -559,11 +565,11 @@ void CN_CONNECTIVITY_ALGO::Build( BOARD* aBoard, PROGRESS_REPORTER* aReporter )
 }
 
 
-void CN_CONNECTIVITY_ALGO::LocalBuild( std::shared_ptr<CN_CONNECTIVITY_ALGO> aGlobalConnectivity,
+void CN_CONNECTIVITY_ALGO::LocalBuild( std::shared_ptr<CONNECTIVITY_DATA> aGlobalConnectivity,
                                        const std::vector<BOARD_ITEM*>& aLocalItems )
 {
     m_isLocal = true;
-    m_globalConnectivity = aGlobalConnectivity;
+    m_globalConnectivityData = aGlobalConnectivity;
 
     for( BOARD_ITEM* item : aLocalItems )
     {

pcbnew/connectivity/connectivity_algo.h

@@ -92,6 +92,15 @@ public:
     void SetSourceNode( const std::shared_ptr<const CN_ANCHOR>& aNode ) { m_source = aNode; }
     void SetTargetNode( const std::shared_ptr<const CN_ANCHOR>& aNode ) { m_target = aNode; }
 
+    void RemoveInvalidRefs()
+    {
+        if( m_source && !m_source->Valid() )
+            m_source.reset();
+
+        if( m_target && !m_target->Valid() )
+            m_target.reset();
+    }
+
     void SetWeight( unsigned weight ) { m_weight = weight; }
     unsigned GetWeight() const { return m_weight; }
 
@@ -158,7 +167,8 @@ public:
         std::list<CN_ITEM*> m_items;
     };
 
-    CN_CONNECTIVITY_ALGO() :
+    CN_CONNECTIVITY_ALGO( CONNECTIVITY_DATA* aParentConnectivityData ) :
+            m_parentConnectivityData( aParentConnectivityData ),
             m_isLocal( false )
     {}
 
@@ -208,7 +218,7 @@ public:
     }
 
     void Build( BOARD* aBoard, PROGRESS_REPORTER* aReporter = nullptr );
-    void LocalBuild( std::shared_ptr<CN_CONNECTIVITY_ALGO> aGlobalConnectivity,
+    void LocalBuild( std::shared_ptr<CONNECTIVITY_DATA> aGlobalConnectivity,
                      const std::vector<BOARD_ITEM*>& aLocalItems );
 
     void Clear();
@@ -258,6 +268,8 @@ public:
     }
 
     void MarkNetAsDirty( int aNet );
+    void RemoveInvalidRefs();
+
     void SetProgressReporter( PROGRESS_REPORTER* aReporter );
 
 private:
@@ -276,6 +288,7 @@ private:
     void markItemNetAsDirty( const BOARD_ITEM* aItem );
 
 private:
+    CONNECTIVITY_DATA*                                    m_parentConnectivityData;
     CN_LIST                                               m_itemList;
     std::unordered_map<const BOARD_ITEM*, ITEM_MAP_ENTRY> m_itemMap;
 
@@ -284,7 +297,7 @@ private:
     std::vector<bool>                                     m_dirtyNets;
 
     bool                                                  m_isLocal;
-    std::shared_ptr<CN_CONNECTIVITY_ALGO>                 m_globalConnectivity;
+    std::shared_ptr<CONNECTIVITY_DATA>                    m_globalConnectivityData;
 
     PROGRESS_REPORTER* m_progressReporter = nullptr;
 };

pcbnew/connectivity/connectivity_data.cpp

@@ -47,7 +47,7 @@
 CONNECTIVITY_DATA::CONNECTIVITY_DATA() :
         m_skipRatsnestUpdate( false )
 {
-    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO );
+    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO( this ) );
     m_progressReporter = nullptr;
     m_fromToCache.reset( new FROM_TO_CACHE );
 }
@@ -112,7 +112,7 @@ bool CONNECTIVITY_DATA::Build( BOARD* aBoard, PROGRESS_REPORTER* aReporter )
 
     std::shared_ptr<NET_SETTINGS>& netSettings = aBoard->GetDesignSettings().m_NetSettings;
 
-    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO );
+    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO( this ) );
     m_connAlgo->Build( aBoard, aReporter );
 
     m_netclassMap.clear();
@@ -151,8 +151,8 @@ void CONNECTIVITY_DATA::Build( std::shared_ptr<CONNECTIVITY_DATA>& aGlobalConnec
     if( !lock )
         return;
 
-    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO );
+    m_connAlgo.reset( new CN_CONNECTIVITY_ALGO( this ) );
-    m_connAlgo->LocalBuild( aGlobalConnectivity->GetConnectivityAlgo(), aLocalItems );
+    m_connAlgo->LocalBuild( aGlobalConnectivity, aLocalItems );
 
     internalRecalculateRatsnest();
 }
@@ -932,6 +932,15 @@ void CONNECTIVITY_DATA::MarkItemNetAsDirty( BOARD_ITEM *aItem )
 }
 
 
+void CONNECTIVITY_DATA::RemoveInvalidRefs()
+{
+    m_connAlgo->RemoveInvalidRefs();
+
+    for( RN_NET* rnNet : m_nets )
+        rnNet->RemoveInvalidRefs();
+}
+
+
 void CONNECTIVITY_DATA::SetProgressReporter( PROGRESS_REPORTER* aReporter )
 {
     m_progressReporter = aReporter;

pcbnew/connectivity/connectivity_data.h

@@ -268,6 +268,8 @@ public:
     KISPINLOCK& GetLock() { return m_lock; }
 
     void MarkItemNetAsDirty( BOARD_ITEM* aItem );
+    void RemoveInvalidRefs();
+
     void SetProgressReporter( PROGRESS_REPORTER* aReporter );
 
     const std::map<int, wxString>& GetNetclassMap() const { return m_netclassMap; }

pcbnew/connectivity/connectivity_items.cpp

@@ -288,9 +288,6 @@ void CN_LIST::RemoveInvalidItems( std::vector<CN_ITEM*>& aGarbage )
 
     m_items.resize( lastItem - m_items.begin() );
 
-    for( CN_ITEM* item : m_items )
-        item->RemoveInvalidRefs();
-
     for( CN_ITEM* item : aGarbage )
         m_index.Remove( item );
 

pcbnew/ratsnest/ratsnest_data.cpp

@@ -456,6 +456,16 @@ void RN_NET::UpdateNet()
 }
 
 
+void RN_NET::RemoveInvalidRefs()
+{
+    for( CN_EDGE& edge : m_rnEdges )
+        edge.RemoveInvalidRefs();
+
+    for( CN_EDGE& edge : m_boardEdges )
+        edge.RemoveInvalidRefs();
+}
+
+
 void RN_NET::Clear()
 {
     m_rnEdges.clear();

pcbnew/ratsnest/ratsnest_data.h

@@ -77,6 +77,8 @@ public:
      */
     void UpdateNet();
 
+    void RemoveInvalidRefs();
+
     /**
      * Find optimal ends of RNEdges.  The MST will have found the closest anchors, but when
      * zones are involved we might have points closer than the anchors.

pcbnew/ratsnest/ratsnest_view_item.cpp

@@ -198,12 +198,13 @@ void RATSNEST_VIEW_ITEM::ViewDraw( int aLayer, KIGFX::VIEW* aView ) const
 
             const std::shared_ptr<const CN_ANCHOR>& sourceNode = edge.GetSourceNode();
             const std::shared_ptr<const CN_ANCHOR>& targetNode = edge.GetTargetNode();
-            const VECTOR2I                          source( sourceNode->Pos() );
-            const VECTOR2I                          target( targetNode->Pos() );
 
-            if( !sourceNode->Valid() || !targetNode->Valid() )
+            if( !sourceNode || !sourceNode->Valid() || !targetNode || !targetNode->Valid() )
                 continue;
 
+            const VECTOR2I source( sourceNode->Pos() );
+            const VECTOR2I target( targetNode->Pos() );
+
             bool enable =  !sourceNode->GetNoLine() && !targetNode->GetNoLine();
             bool show;