[ Do not submit ] Prototype for invalidation analysis

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google 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
@@ skipping 14 matching lines @@
 
 #ifndef RenderObject_h
 #define RenderObject_h
 
 #include "core/dom/Document.h"
 #include "core/dom/DocumentLifecycle.h"
 #include "core/dom/Element.h"
 #include "core/editing/TextAffinity.h"
 #include "core/fetch/ImageResourceClient.h"
 #include "core/html/HTMLElement.h"
+#include "core/inspector/InspectorTraceEvents.h"
 #include "core/rendering/HitTestRequest.h"
 #include "core/rendering/PaintInvalidationState.h"
 #include "core/rendering/PaintPhase.h"
 #include "core/rendering/RenderObjectChildList.h"
 #include "core/rendering/ScrollAlignment.h"
 #include "core/rendering/SubtreeLayoutScope.h"
 #include "core/rendering/compositing/CompositingState.h"
 #include "core/rendering/compositing/CompositingTriggers.h"
 #include "core/rendering/style/RenderStyle.h"
 #include "core/rendering/style/StyleInheritedData.h"
@@ skipping 1367 matching lines @@
 }
 
 // setNeedsLayout() won't cause full paint invalidations as
 // setNeedsLayoutAndFullPaintInvalidation() does. Otherwise the two methods are identical.
 inline void RenderObject::setNeedsLayout(MarkingBehavior markParents, SubtreeLayoutScope* layouter)
 {
     ASSERT(!isSetNeedsLayoutForbidden());
     bool alreadyNeededLayout = m_bitfields.selfNeedsLayout();
     setSelfNeedsLayout(true);
     if (!alreadyNeededLayout) {
+        TRACE_EVENT_INSTANT1(
+            TRACE_DISABLED_BY_DEFAULT("devtools.timeline.layoutInvalidationTracking"),
+            "LayoutInvalidationTracking",
+            "data",
+            InspectorLayoutInvalidationTrackingEvent::data(this));
         if (markParents == MarkContainingBlockChain && (!layouter || layouter->root() != this))
             markContainingBlocksForLayout(true, 0, layouter);
     }
 }
 
 inline void RenderObject::setNeedsLayoutAndFullPaintInvalidation(MarkingBehavior markParents, SubtreeLayoutScope* layouter)
 {
     setNeedsLayout(markParents, layouter);
     setShouldDoFullPaintInvalidation(true);
 }
@@ skipping 136 matching lines @@
 void showTree(const blink::RenderObject*);
 void showLineTree(const blink::RenderObject*);
 void showRenderTree(const blink::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const blink::RenderObject* object1, const blink::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h