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/*
* Copyright (C) 2021 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <wtf/FastMalloc.h>
#include <wtf/ThreadGroup.h>
#if USE(GLIB)
#include <optional>
#include <wtf/RunLoop.h>
#include <wtf/glib/GRefPtr.h>
typedef struct _GDBusProxy GDBusProxy;
#endif
namespace WTF {
class RealTimeThreads {
WTF_MAKE_FAST_ALLOCATED;
friend class LazyNeverDestroyed<RealTimeThreads>;
public:
WTF_EXPORT_PRIVATE static RealTimeThreads& singleton();
// Do nothing since this is a singleton.
void ref() const { }
void deref() const { }
void registerThread(Thread&);
WTF_EXPORT_PRIVATE void setEnabled(bool);
private:
RealTimeThreads();
void promoteThreadToRealTime(const WTF::Thread&);
void demoteThreadFromRealTime(const WTF::Thread&);
void demoteAllThreadsFromRealTime();
#if USE(GLIB)
void realTimeKitMakeThreadRealTime(uint64_t processID, uint64_t threadID, uint32_t priority);
void scheduleDiscardRealTimeKitProxy();
void discardRealTimeKitProxyTimerFired();
#endif
std::shared_ptr<ThreadGroup> m_threadGroup;
bool m_enabled { true };
#if USE(GLIB)
std::optional<GRefPtr<GDBusProxy>> m_realTimeKitProxy;
RunLoop::Timer m_discardRealTimeKitProxyTimer;
#endif
};
} // namespace WTF
using WTF::RealTimeThreads;
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