PerformanceTests/StitchMarker/wtf/ThreadMessage.h

/*
 * Copyright (C) 2017 Apple Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
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#pragma once

#include <wtf/ScopedLambda.h>
#include <wtf/Threading.h>

namespace WTF {

using ThreadMessage = ScopedLambda<void(PlatformRegisters&)>;

enum class MessageStatus {
    MessageRan,
    ThreadExited,
};

// This method allows us to send a message which will be run in a signal handler on the desired thread.
// There are several caveates to this method however, This function uses signals so your message should
// be sync signal safe.
WTF_EXPORT_PRIVATE MessageStatus sendMessageScoped(Thread&, const ThreadMessage&);

template<typename Functor>
MessageStatus sendMessage(Thread& targetThread, const Functor& func)
{
    auto lambda = scopedLambdaRef<void(PlatformRegisters&)>(func);
    return sendMessageScoped(targetThread, lambda);
}

} // namespace WTF

using WTF::sendMessage;