Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/Threading.h

-/*
- * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved.
- * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
- *
- * 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.
- *
- *
- * Note: The implementations of InterlockedIncrement and InterlockedDecrement are based
- * on atomic_increment and atomic_exchange_and_add from the Boost C++ Library. The license
- * is virtually identical to the Apple license above but is included here for completeness.
- *
- * Boost Software License - Version 1.0 - August 17th, 2003
- * 
- * Permission is hereby granted, free of charge, to any person or organization
- * obtaining a copy of the software and accompanying documentation covered by
- * this license (the "Software") to use, reproduce, display, distribute,
- * execute, and transmit the Software, and to prepare derivative works of the
- * Software, and to permit third-parties to whom the Software is furnished to
- * do so, all subject to the following:
- * 
- * The copyright notices in the Software and this entire statement, including
- * the above license grant, this restriction and the following disclaimer,
- * must be included in all copies of the Software, in whole or in part, and
- * all derivative works of the Software, unless such copies or derivative
- * works are solely in the form of machine-executable object code generated by
- * a source language processor.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
- * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
- * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef Threading_h
-#define Threading_h
-
-#include <wtf/Platform.h>
-
-#include <stdint.h>
-#include <wtf/Assertions.h>
-#include <wtf/Atomics.h>
-#include <wtf/Locker.h>
-#include <wtf/Noncopyable.h>
-#include <wtf/ThreadSafeRefCounted.h>
-#include <wtf/ThreadingPrimitives.h>
-
-// For portability, we do not use thread-safe statics natively supported by some compilers (e.g. gcc).
-#define AtomicallyInitializedStatic(T, name) \
-    WTF::lockAtomicallyInitializedStaticMutex(); \
-    static T name; \
-    WTF::unlockAtomicallyInitializedStaticMutex();
-
-namespace WTF {
-
-typedef uint32_t ThreadIdentifier;
-typedef void (*ThreadFunction)(void* argument);
-
-// This function must be called from the main thread. It is safe to call it repeatedly.
-// Darwin is an exception to this rule: it is OK to call it from any thread, the only 
-// requirement is that the calls are not reentrant.
-WTF_EXPORT_PRIVATE void initializeThreading();
-
-// Returns 0 if thread creation failed.
-// The thread name must be a literal since on some platforms it's passed in to the thread.
-WTF_EXPORT_PRIVATE ThreadIdentifier createThread(ThreadFunction, void*, const char* threadName);
-
-// Internal platform-specific createThread implementation.
-ThreadIdentifier createThreadInternal(ThreadFunction, void*, const char* threadName);
-
-// Called in the thread during initialization.
-// Helpful for platforms where the thread name must be set from within the thread.
-void initializeCurrentThreadInternal(const char* threadName);
-
-WTF_EXPORT_PRIVATE ThreadIdentifier currentThread();
-WTF_EXPORT_PRIVATE int waitForThreadCompletion(ThreadIdentifier);
-WTF_EXPORT_PRIVATE void detachThread(ThreadIdentifier);
-
-WTF_EXPORT_PRIVATE void yield();
-
-WTF_EXPORT_PRIVATE void lockAtomicallyInitializedStaticMutex();
-WTF_EXPORT_PRIVATE void unlockAtomicallyInitializedStaticMutex();
-
-} // namespace WTF
-
-using WTF::ThreadIdentifier;
-using WTF::createThread;
-using WTF::currentThread;
-using WTF::detachThread;
-using WTF::waitForThreadCompletion;
-using WTF::yield;
-
-#endif // Threading_h