Make HTMLNames threadsafe

Source/WebCore/dom/QualifiedName.cpp

 /*
  * Copyright (C) 2005, 2006, 2009 Apple 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 110 matching lines @@
     }
     return local;
 }
 
 // Global init routines
 DEFINE_GLOBAL(QualifiedName, anyName, nullAtom, starAtom, starAtom)
 
 void QualifiedName::init()
 {
     static bool initialized;
-    if (!initialized) {
-        // Use placement new to initialize the globals.
-        
-        AtomicString::init();
-        new ((void*)&anyName) QualifiedName(nullAtom, starAtom, starAtom);
-        initialized = true;
-    }
+    if (initialized)
+        return;
+    initialized = true;
+
+    ASSERT(starAtom.impl());
+    new ((void*)&anyName) QualifiedName(nullAtom, starAtom, starAtom);
 }
 
 const QualifiedName& nullQName()
 {
     DEFINE_STATIC_LOCAL(QualifiedName, nullName, (nullAtom, nullAtom, nullAtom));
     return nullName;
 }
 
 const AtomicString& QualifiedName::localNameUpper() const
 {
@@ skipping 28 matching lines @@
 {
     new (reinterpret_cast<void*>(targetAddress)) QualifiedName(nullAtom, AtomicString(name), nameNamespace);
 }
 
 void createQualifiedName(void* targetAddress, StringImpl* name)
 {
     new (reinterpret_cast<void*>(targetAddress)) QualifiedName(nullAtom, AtomicString(name), nullAtom);
 }
 
 }