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/*
* 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.
WTF_EXPORT_PRIVATE void initializeMainThread();
WTF_EXPORT_PRIVATE void callOnMainThread(MainThreadFunction*, void* context);
WTF_EXPORT_PRIVATE void callOnMainThreadAndWait(MainThreadFunction*, void* context);
WTF_EXPORT_PRIVATE void cancelCallOnMainThread(MainThreadFunction*, void* context);
template<typename> class Function;
WTF_EXPORT_PRIVATE void callOnMainThread(const Function<void ()>&);
WTF_EXPORT_PRIVATE void setMainThreadCallbacksPaused(bool paused);
WTF_EXPORT_PRIVATE bool isMainThread();
#if USE(WEB_THREAD)
WTF_EXPORT_PRIVATE bool isWebThread();
WTF_EXPORT_PRIVATE bool isUIThread();
#else
inline bool isWebThread() { return isMainThread(); }
inline bool isUIThread() { return isMainThread(); }
#endif // USE(WEB_THREAD)
void initializeGCThreads();
#if ENABLE(PARALLEL_GC)
void registerGCThread();
WTF_EXPORT_PRIVATE bool isMainThreadOrGCThread();
#elif PLATFORM(MAC)
WTF_EXPORT_PRIVATE bool isMainThreadOrGCThread();
#else
inline bool isMainThreadOrGCThread() { return isMainThread(); }
#endif
// NOTE: these functions are internal to the callOnMainThread implementation.
void initializeMainThreadPlatform();
void scheduleDispatchFunctionsOnMainThread();
void dispatchFunctionsFromMainThread();
#if PLATFORM(MAC)
#if !USE(WEB_THREAD)
// 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.
WTF_EXPORT_PRIVATE void initializeMainThreadToProcessMainThread();
#endif // !USE(WEB_THREAD)
void initializeMainThreadToProcessMainThreadPlatform();
#endif
} // namespace WTF
using WTF::callOnMainThread;
using WTF::callOnMainThreadAndWait;
using WTF::cancelCallOnMainThread;
using WTF::setMainThreadCallbacksPaused;
using WTF::isMainThread;
using WTF::isMainThreadOrGCThread;
#endif // MainThread_h
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