DOM Optimizations

DOM traversal optimizations
DOM Core optimizations
Prefetch optimization for DOM Tree Traversal

Conflicts:

	Source/WebKit/android/jni/WebViewCore.cpp

Change-Id: Icbb8a7229ee9cff1a5401b57c8181f18b9a6d6e0

1 files changed, 8 insertions, 0 deletions

diff --git a/Source/WebCore/dom/DynamicNodeList.h b/Source/WebCore/dom/DynamicNodeList.h
index 9c8f3cc..c8b6ca2 100644
--- a/Source/WebCore/dom/DynamicNodeList.h
+++ b/Source/WebCore/dom/DynamicNodeList.h
@@ -28,6 +28,12 @@
 #include <wtf/RefCounted.h>
 #include <wtf/Forward.h>
 #include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WTF {
+    // Properties in Vector can be initialized with memset and moved using memcpy.
+    template<> struct VectorTraits<WebCore::Node*> : SimpleClassVectorTraits { };
+}
 
 namespace WebCore {
 
@@ -42,9 +48,11 @@ namespace WebCore {
 
             unsigned cachedLength;
             Node* lastItem;
+            Node* lastDecendantOfRoot;
             unsigned lastItemOffset;
             bool isLengthCacheValid : 1;
             bool isItemCacheValid : 1;
+            Vector<Node* > cachedNodes;
         protected:
             Caches();
         };