Initialize TextEncoding singletons in a threadsafe manner.

Source/wtf/text/TextEncoding.cpp

 /*
  * Copyright (C) 2004, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 14 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "wtf/text/TextEncoding.h"
 
 #include "wtf/text/TextEncodingRegistry.h"
 #include <unicode/unorm.h>
 #include "wtf/OwnPtr.h"
 #include "wtf/StdLibExtras.h"
+#include "wtf/Threading.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/WTFString.h"
 
 namespace WTF {
 
 static const TextEncoding& UTF7Encoding()
 {
-    static TextEncoding globalUTF7Encoding("UTF-7");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF7Encoding = *new TextEncoding("UTF-7"));
     return globalUTF7Encoding;
 }
 
 TextEncoding::TextEncoding(const char* name)
     : m_name(atomicCanonicalTextEncodingName(name))
 {
     // Aliases are valid, but not "replacement" itself.
     if (m_name && isReplacementEncoding(name))
         m_name = 0;
 }
@@ skipping 114 matching lines @@
 // but it's fraught with problems and we'd rather steer clear of it.
 const TextEncoding& TextEncoding::encodingForFormSubmission() const
 {
     if (isNonByteBasedEncoding() || isUTF7Encoding())
         return UTF8Encoding();
     return *this;
 }
 
 const TextEncoding& ASCIIEncoding()
 {
-    static TextEncoding globalASCIIEncoding("ASCII");
+    AtomicallyInitializedStatic(TextEncoding, globalASCIIEncoding = *new TextEncoding("ASCII"));
     return globalASCIIEncoding;
 }
 
 const TextEncoding& Latin1Encoding()
 {
-    static TextEncoding globalLatin1Encoding("latin1");
+    AtomicallyInitializedStatic(TextEncoding, globalLatin1Encoding = *new TextEncoding("latin1"));
     return globalLatin1Encoding;
 }
 
 const TextEncoding& UTF16BigEndianEncoding()
 {
-    static TextEncoding globalUTF16BigEndianEncoding("UTF-16BE");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF16BigEndianEncoding = *new TextEncoding("UTF-16BE"));
     return globalUTF16BigEndianEncoding;
 }
 
 const TextEncoding& UTF16LittleEndianEncoding()
 {
-    static TextEncoding globalUTF16LittleEndianEncoding("UTF-16LE");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF16LittleEndianEncoding = *new TextEncoding("UTF-16LE"));
     return globalUTF16LittleEndianEncoding;
 }
 
 const TextEncoding& UTF32BigEndianEncoding()
 {
-    static TextEncoding globalUTF32BigEndianEncoding("UTF-32BE");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF32BigEndianEncoding = *new TextEncoding("UTF-32BE"));
     return globalUTF32BigEndianEncoding;
 }
 
 const TextEncoding& UTF32LittleEndianEncoding()
 {
-    static TextEncoding globalUTF32LittleEndianEncoding("UTF-32LE");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF32LittleEndianEncoding = *new TextEncoding("UTF-32LE"));
     return globalUTF32LittleEndianEncoding;
 }
 
 const TextEncoding& UTF8Encoding()
 {
-    static TextEncoding globalUTF8Encoding("UTF-8");
+    AtomicallyInitializedStatic(TextEncoding, globalUTF8Encoding = *new TextEncoding("UTF-8"));
     ASSERT(globalUTF8Encoding.isValid());
     return globalUTF8Encoding;
 }
 
 const TextEncoding& WindowsLatin1Encoding()
 {
-    static TextEncoding globalWindowsLatin1Encoding("WinLatin1");
+    AtomicallyInitializedStatic(TextEncoding, globalWindowsLatin1Encoding = *new TextEncoding("WinLatin1"));
     return globalWindowsLatin1Encoding;
 }
 
 } // namespace WTF