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+/*
+ * Copyright (C) 2008 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.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * 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 "InitializeThreading.h"
+
+#include "collector.h"
+#include "DateMath.h"
+#include "dtoa.h"
+#include "identifier.h"
+#include "JSGlobalObject.h"
+#include "ustring.h"
+#include <wtf/Threading.h>
+
+namespace JSC {
+
+#if PLATFORM(DARWIN) && ENABLE(JSC_MULTIPLE_THREADS)
+static pthread_once_t initializeThreadingKeyOnce = PTHREAD_ONCE_INIT;
+#endif
+
+static void initializeThreadingOnce()
+{
+ WTF::initializeThreading();
+#if ENABLE(JSC_MULTIPLE_THREADS)
+ s_dtoaP5Mutex = new Mutex;
+ UString::null();
+ initDateMath();
+#endif
+}
+
+void initializeThreading()
+{
+#if PLATFORM(DARWIN) && ENABLE(JSC_MULTIPLE_THREADS)
+ pthread_once(&initializeThreadingKeyOnce, initializeThreadingOnce);
+#else
+ static bool initializedThreading = false;
+ if (!initializedThreading) {
+ initializeThreadingOnce();
+ initializedThreading = true;
+ }
+#endif
+}
+
+} // namespace JSC