Oilpan: Schedule a precise GC when a page navigates

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 786 matching lines @@
 {
     ASSERT(!childNeedsStyleInvalidation());
     ASSERT(!needsStyleInvalidation());
     ASSERT(insertionPoint->inDocument() || isContainerNode());
     if (insertionPoint->inDocument())
         setFlag(InDocumentFlag);
     if (parentOrShadowHostNode()->isInShadowTree())
         setFlag(IsInShadowTreeFlag);
     if (childNeedsDistributionRecalc() && !insertionPoint->childNeedsDistributionRecalc())
         insertionPoint->markAncestorsWithChildNeedsDistributionRecalc();
+    if (insertionPoint->inDocument())
+        insertionPoint->document().topDocument().incrementNodeCount();

[haraken, 2015/08/11 07:43:08]

You can move this code into the above 'insertionPoint->inDocument()' clause.

[keishi, 2015/08/11 08:12:57]

Done.

     return InsertionDone;
 }
 
 inline void Node::removedFrom(ContainerNode* insertionPoint)
 {
     ASSERT(insertionPoint->inDocument() || isContainerNode() || isInShadowTree());
     if (insertionPoint->inDocument())
         clearFlag(InDocumentFlag);
     if (isInShadowTree() && !treeScope().rootNode().isShadowRoot())
         clearFlag(IsInShadowTreeFlag);
     if (AXObjectCache* cache = document().existingAXObjectCache())
         cache->remove(this);
+    if (insertionPoint->inDocument())
+        insertionPoint->document().topDocument().decrementNodeCount();

[haraken, 2015/08/11 07:43:08]

Ditto.

[keishi, 2015/08/11 08:12:58]

Done.

 }
 
 inline void Element::invalidateStyleAttribute()
 {
     ASSERT(elementData());
     elementData()->m_styleAttributeIsDirty = true;
 }
 
 inline const StylePropertySet* Element::presentationAttributeStyle()
 {
@@ skipping 63 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h