Oilpan: move LiveNodeList collections to the heap.

Source/core/dom/MutationRecord.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "core/dom/QualifiedName.h"
 #include "core/dom/StaticNodeList.h"
 #include "wtf/StdLibExtras.h"
 
 namespace WebCore {
 
 namespace {
 
 class ChildListRecord : public MutationRecord {
 public:
-    ChildListRecord(PassRefPtr<Node> target, PassRefPtr<NodeList> added, PassRefPtr<NodeList> removed, PassRefPtr<Node> previousSibling, PassRefPtr<Node> nextSibling)
+    ChildListRecord(PassRefPtr<Node> target, PassRefPtrWillBeRawPtr<NodeList> added, PassRefPtrWillBeRawPtr<NodeList> removed, PassRefPtr<Node> previousSibling, PassRefPtr<Node> nextSibling)
         : m_target(target)
         , m_addedNodes(added)
         , m_removedNodes(removed)
         , m_previousSibling(previousSibling)
         , m_nextSibling(nextSibling)
     {
     }
 
+    virtual void trace(Visitor* visitor) OVERRIDE
+    {
+        visitor->trace(m_target);
+        visitor->trace(m_addedNodes);
+        visitor->trace(m_removedNodes);
+        visitor->trace(m_previousSibling);
+        visitor->trace(m_nextSibling);
+        MutationRecord::trace(visitor);
+    }
+
 private:
     virtual const AtomicString& type() OVERRIDE;
     virtual Node* target() OVERRIDE { return m_target.get(); }
     virtual NodeList* addedNodes() OVERRIDE { return m_addedNodes.get(); }
     virtual NodeList* removedNodes() OVERRIDE { return m_removedNodes.get(); }
     virtual Node* previousSibling() OVERRIDE { return m_previousSibling.get(); }
     virtual Node* nextSibling() OVERRIDE { return m_nextSibling.get(); }
 
-    RefPtr<Node> m_target;
-    RefPtr<NodeList> m_addedNodes;
-    RefPtr<NodeList> m_removedNodes;
-    RefPtr<Node> m_previousSibling;
-    RefPtr<Node> m_nextSibling;
+    RefPtrWillBeMember<Node> m_target;
+    RefPtrWillBeMember<NodeList> m_addedNodes;
+    RefPtrWillBeMember<NodeList> m_removedNodes;
+    RefPtrWillBeMember<Node> m_previousSibling;
+    RefPtrWillBeMember<Node> m_nextSibling;
 };
 
 class RecordWithEmptyNodeLists : public MutationRecord {
 public:
     RecordWithEmptyNodeLists(PassRefPtr<Node> target, const String& oldValue)
         : m_target(target)
         , m_oldValue(oldValue)
     {
     }
 
+    virtual void trace(Visitor* visitor) OVERRIDE
+    {
+        visitor->trace(m_target);
+        visitor->trace(m_addedNodes);
+        visitor->trace(m_removedNodes);
+        MutationRecord::trace(visitor);
+    }
+
 private:
     virtual Node* target() OVERRIDE { return m_target.get(); }
     virtual String oldValue() OVERRIDE { return m_oldValue; }
     virtual NodeList* addedNodes() OVERRIDE { return lazilyInitializeEmptyNodeList(m_addedNodes); }
     virtual NodeList* removedNodes() OVERRIDE { return lazilyInitializeEmptyNodeList(m_removedNodes); }
 
-    static NodeList* lazilyInitializeEmptyNodeList(RefPtr<NodeList>& nodeList)
+    static NodeList* lazilyInitializeEmptyNodeList(RefPtrWillBeMember<NodeList>& nodeList)
     {
         if (!nodeList)
             nodeList = StaticNodeList::createEmpty();
         return nodeList.get();
     }
 
-    RefPtr<Node> m_target;
+    RefPtrWillBeMember<Node> m_target;
     String m_oldValue;
-    RefPtr<NodeList> m_addedNodes;
-    RefPtr<NodeList> m_removedNodes;
+    RefPtrWillBeMember<NodeList> m_addedNodes;
+    RefPtrWillBeMember<NodeList> m_removedNodes;
 };
 
 class AttributesRecord : public RecordWithEmptyNodeLists {
 public:
     AttributesRecord(PassRefPtr<Node> target, const QualifiedName& name, const AtomicString& oldValue)
         : RecordWithEmptyNodeLists(target, oldValue)
         , m_attributeName(name.localName())
         , m_attributeNamespace(name.namespaceURI())
     {
     }
@@ skipping 59 matching lines @@
 }
 
 const AtomicString& CharacterDataRecord::type()
 {
     DEFINE_STATIC_LOCAL(AtomicString, characterData, ("characterData", AtomicString::ConstructFromLiteral));
     return characterData;
 }
 
 } // namespace
 
-PassRefPtrWillBeRawPtr<MutationRecord> MutationRecord::createChildList(PassRefPtr<Node> target, PassRefPtr<NodeList> added, PassRefPtr<NodeList> removed, PassRefPtr<Node> previousSibling, PassRefPtr<Node> nextSibling)
+PassRefPtrWillBeRawPtr<MutationRecord> MutationRecord::createChildList(PassRefPtr<Node> target, PassRefPtrWillBeRawPtr<NodeList> added, PassRefPtrWillBeRawPtr<NodeList> removed, PassRefPtr<Node> previousSibling, PassRefPtr<Node> nextSibling)
 {
     return adoptRefWillBeNoop(new ChildListRecord(target, added, removed, previousSibling, nextSibling));
 }
 
 PassRefPtrWillBeRawPtr<MutationRecord> MutationRecord::createAttributes(PassRefPtr<Node> target, const QualifiedName& name, const AtomicString& oldValue)
 {
     return adoptRefWillBeNoop(new AttributesRecord(target, name, oldValue));
 }
 
 PassRefPtrWillBeRawPtr<MutationRecord> MutationRecord::createCharacterData(PassRefPtr<Node> target, const String& oldValue)
 {
     return adoptRefWillBeNoop(new CharacterDataRecord(target, oldValue));
 }
 
 PassRefPtrWillBeRawPtr<MutationRecord> MutationRecord::createWithNullOldValue(PassRefPtrWillBeRawPtr<MutationRecord> record)
 {
     return adoptRefWillBeNoop(new MutationRecordWithNullOldValue(record));
 }
 
 MutationRecord::~MutationRecord()
 {
 }
 
 } // namespace WebCore