Report DOM partitionAlloc size to V8 GC.

Source/platform/Partitions.h

 /*
  * Copyright (C) 2013 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 @@
 namespace WebCore {
 
 class PLATFORM_EXPORT Partitions {
 public:
     static void init();
     static void shutdown();
 
     ALWAYS_INLINE static PartitionRoot* getObjectModelPartition() { return m_objectModelAllocator.root(); }
     ALWAYS_INLINE static PartitionRoot* getRenderingPartition() { return m_renderingAllocator.root(); }
 
+    static void addDOMMemoryUsage(size_t size)
+    {
+        m_domMemoryUsage += size;
+    }
+
+    static void subtractDOMMemoryUsage(size_t size)
+    {
+        m_domMemoryUsage -= size;
+    }
+
+    static size_t currentDOMMemoryUsage() { return m_domMemoryUsage; }
+
 private:
     static SizeSpecificPartitionAllocator<3072> m_objectModelAllocator;

[jochen (gone - plz use gerrit), 2014/05/28 07:23:03]

why not just report the size of this partition?

[kouhei (in TOK), 2014/05/28 07:35:20]

Is there an easy way to do that?

     static SizeSpecificPartitionAllocator<1024> m_renderingAllocator;
+
+    static size_t m_domMemoryUsage;
 };
 
 } // namespace WebCore
 
 #endif // Partitions_h