Uptake WebKit Changeset r149185.

Source/core/rendering/RenderArena.h

 /*
  * Copyright (C) 2003 Apple Computer, Inc.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 18 matching lines @@
  * deletingthe provisions above and replace them with the notice and
  * other provisions required by the MPL or the GPL, as the case may be.
  * If you do not delete the provisions above, a recipient may use your
  * version of this file under any of the LGPL, the MPL or the GPL.
  */
 
 #ifndef RenderArena_h
 #define RenderArena_h
 
 #include "core/platform/Arena.h"
-#include <wtf/FastAllocBase.h>
-#include <wtf/Noncopyable.h>
+#include "wtf/FastAllocBase.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 static const size_t gMaxRecycledSize = 1024;
 
-class RenderArena {
-    WTF_MAKE_NONCOPYABLE(RenderArena); WTF_MAKE_FAST_ALLOCATED;
+class RenderArena : public RefCounted<RenderArena> {
 public:
-    explicit RenderArena(unsigned arenaSize = 8192);
+    static PassRefPtr<RenderArena> create() { return adoptRef(new RenderArena); }
     ~RenderArena();
 
     // Memory management functions
     void* allocate(size_t);
     void free(size_t, void*);
 
     size_t totalRenderArenaSize() const { return m_totalSize; }
     size_t totalRenderArenaAllocatedBytes() const { return m_totalAllocated; }
 
 private:
+    RenderArena(unsigned arenaSize = 8192);
+
     // Underlying arena pool
     ArenaPool m_pool;
 
     // The mask used to secure the recycled freelist pointers.
     uintptr_t m_mask;
     // The recycler array is sparse with the indices being multiples of the
     // rounding size, sizeof(void*), i.e., 0, 4, 8, 12, 16, 20, ... on 32-bit.
     static const size_t kRecyclerShift = (sizeof(void*) == 8) ? 3 : 2;
     void* m_recyclers[gMaxRecycledSize >> kRecyclerShift];
 
     size_t m_totalSize;
     size_t m_totalAllocated;
 };
 
 } // namespace WebCore
 
 #endif // RenderArena_h