Heap profiler: fetch document.URL of global objects.

src/profile-generator.h

 // Copyright 2010 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 841 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(HeapEntriesMap);
 };
 
 
 class HeapObjectsSet {
  public:
   HeapObjectsSet();
   void Clear();
   bool Contains(Object* object);
   void Insert(Object* obj);
+  const char* GetTag(Object* obj);
+  void SetTag(Object* obj, const char* tag);
 
  private:
   HashMap entries_;
 
   DISALLOW_COPY_AND_ASSIGN(HeapObjectsSet);
 };
 
 
 // An interface used to populate a snapshot with nodes and edges.
 class SnapshotFillerInterface {
@@ skipping 41 matching lines @@
 class V8HeapExplorer : public HeapEntriesAllocator {
  public:
   V8HeapExplorer(HeapSnapshot* snapshot,
                  SnapshottingProgressReportingInterface* progress);
   virtual ~V8HeapExplorer();
   virtual HeapEntry* AllocateEntry(
       HeapThing ptr, int children_count, int retainers_count);
   void AddRootEntries(SnapshotFillerInterface* filler);
   int EstimateObjectsCount();
   bool IterateAndExtractReferences(SnapshotFillerInterface* filler);
+  void TagGlobalObjects();
 
   static HeapObject* const kInternalRootObject;
 
  private:
   HeapEntry* AddEntry(
       HeapObject* object, int children_count, int retainers_count);
   HeapEntry* AddEntry(HeapObject* object,
                       HeapEntry::Type type,
                       const char* name,
                       int children_count,
@@ skipping 38 matching lines @@
   void SetRootShortcutReference(Object* child);
   void SetRootGcRootsReference();
   void SetGcRootsReference(Object* child);
 
   HeapEntry* GetEntry(Object* obj);
 
   HeapSnapshot* snapshot_;
   HeapSnapshotsCollection* collection_;
   SnapshottingProgressReportingInterface* progress_;
   SnapshotFillerInterface* filler_;
+  HeapObjectsSet objects_tags_;
 
   static HeapObject* const kGcRootsObject;
 
   friend class IndexedReferencesExtractor;
   friend class RootsReferencesExtractor;
 
   DISALLOW_COPY_AND_ASSIGN(V8HeapExplorer);
 };
 
 
@@ skipping 126 matching lines @@
 };
 
 
 String* GetConstructorNameForHeapProfile(JSObject* object);
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 #endif  // V8_PROFILE_GENERATOR_H_