--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/wtf/Threading.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * 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. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "Threading.h"
+
+#include <string.h>
+
+namespace WTF {
+
+struct NewThreadContext : FastAllocBase {
+    NewThreadContext(ThreadFunction entryPoint, void* data, const char* name)
+        : entryPoint(entryPoint)
+        , data(data)
+        , name(name)
+    {
+    }
+
+    ThreadFunction entryPoint;
+    void* data;
+    const char* name;
+
+    Mutex creationMutex;
+};
+
+static void* threadEntryPoint(void* contextData)
+{
+    NewThreadContext* context = reinterpret_cast<NewThreadContext*>(contextData);
+
+    // Block until our creating thread has completed any extra setup work, including
+    // establishing ThreadIdentifier.
+    {
+        MutexLocker locker(context->creationMutex);
+    }
+
+    initializeCurrentThreadInternal(context->name);
+
+    // Grab the info that we need out of the context, then deallocate it.
+    ThreadFunction entryPoint = context->entryPoint;
+    void* data = context->data;
+    delete context;
+
+    return entryPoint(data);
+}
+
+ThreadIdentifier createThread(ThreadFunction entryPoint, void* data, const char* name)
+{
+    // Visual Studio has a 31-character limit on thread names. Longer names will
+    // be truncated silently, but we'd like callers to know about the limit.
+#if !LOG_DISABLED
+    if (strlen(name) > 31)
+        LOG_ERROR("Thread name \"%s\" is longer than 31 characters and will be truncated by Visual Studio", name);
+#endif
+
+    NewThreadContext* context = new NewThreadContext(entryPoint, data, name);
+
+    // Prevent the thread body from executing until we've established the thread identifier.
+    MutexLocker locker(context->creationMutex);
+
+    return createThreadInternal(threadEntryPoint, context, name);
+}
+
+#if PLATFORM(MAC) || PLATFORM(WIN)
+
+// This function is deprecated but needs to be kept around for backward
+// compatibility. Use the 3-argument version of createThread above.
+
+ThreadIdentifier createThread(ThreadFunction entryPoint, void* data);
+
+ThreadIdentifier createThread(ThreadFunction entryPoint, void* data)
+{
+    return createThread(entryPoint, data, 0);
+}
+#endif
+
+} // namespace WTF