diff -r 000000000000 -r 4f2f89ce4247 JavaScriptCore/wtf/ThreadSpecificWin.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/wtf/ThreadSpecificWin.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2009 Jian Li <jianli@chromium.org>
+ *
+ * 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+
+#include "ThreadSpecific.h"
+#include <wtf/Noncopyable.h>
+
+#if USE(PTHREADS)
+#error This file should not be compiled by ports that do not use Windows native ThreadSpecific implementation.
+#endif
+
+namespace WTF {
+
+long& tlsKeyCount()
+{
+    static long count;
+    return count;
+}
+
+DWORD* tlsKeys()
+{
+    static DWORD keys[kMaxTlsKeySize];
+    return keys;
+}
+
+void ThreadSpecificThreadExit()
+{
+    for (long i = 0; i < tlsKeyCount(); i++) {
+        // The layout of ThreadSpecific<T>::Data does not depend on T. So we are safe to do the static cast to ThreadSpecific<int> in order to access its data member.
+        ThreadSpecific<int>::Data* data = static_cast<ThreadSpecific<int>::Data*>(TlsGetValue(tlsKeys()[i]));
+        if (data)
+            data->destructor(data);
+    }
+}
+
+} // namespace WTF