blob: 6da8a0e09f500e2ebce5d60895beb5045abdd418 [file] [log] [blame]
/*
* Copyright (C) 2017 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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.
*/
#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(const ThreadSuspendLocker&, Thread&, const ThreadMessage&);
template<typename Functor>
MessageStatus sendMessage(const ThreadSuspendLocker& locker, Thread& targetThread, const Functor& func)
{
auto lambda = scopedLambdaRef<void(PlatformRegisters&)>(func);
return sendMessageScoped(locker, targetThread, lambda);
}
} // namespace WTF
using WTF::sendMessage;