/*

 * 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.

 */

#ifndef MainThread_h

#define MainThread_h

#include <stdint.h>

namespace WTF {

typedef uint32_t ThreadIdentifier;

typedef void MainThreadFunction(void*);

// Must be called from the main thread.

void initializeMainThread();

void callOnMainThread(MainThreadFunction*, void* context);

void callOnMainThreadAndWait(MainThreadFunction*, void* context);

void cancelCallOnMainThread(MainThreadFunction*, void* context);

void setMainThreadCallbacksPaused(bool paused);

bool isMainThread();

// NOTE: these functions are internal to the callOnMainThread implementation.

void initializeMainThreadPlatform();

void scheduleDispatchFunctionsOnMainThread();

void dispatchFunctionsFromMainThread();

#if PLATFORM(MAC)

// This version of initializeMainThread sets up the main thread as corresponding

// to the process's main thread, and not necessarily the thread that calls this

// function. It should only be used as a legacy aid for Mac WebKit.

void initializeMainThreadToProcessMainThread();

void initializeMainThreadToProcessMainThreadPlatform();

#endif

} // namespace WTF

using WTF::callOnMainThread;

using WTF::callOnMainThreadAndWait;

using WTF::cancelCallOnMainThread;

using WTF::setMainThreadCallbacksPaused;

using WTF::isMainThread;

#endif // MainThread_h