Enhancements to PartitionAlloc to support threading and arbitrary allocation sizes.

Source/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 106 matching lines @@
 };
 
 COMPILE_ASSERT(sizeof(RenderObject) == sizeof(SameSizeAsRenderObject), RenderObject_should_stay_small);
 
 bool RenderObject::s_affectsParentBlock = false;
 
 RenderObjectAncestorLineboxDirtySet* RenderObject::s_ancestorLineboxDirtySet = 0;
 
 void* RenderObject::operator new(size_t sz)
 {
+    ASSERT(isMainThread());
     return partitionAlloc(Partitions::getRenderingPartition(), sz);
 }
 
 void RenderObject::operator delete(void* ptr)
 {
+    ASSERT(isMainThread());
     partitionFree(ptr);
 }
 
 RenderObject* RenderObject::createObject(Element* element, RenderStyle* style)
 {
     Document* doc = element->document();
 
     // Minimal support for content properties replacing an entire element.
     // Works only if we have exactly one piece of content and it's a URL.
     // Otherwise acts as if we didn't support this feature.
@@ skipping 3169 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif