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// Copyright (C) 2023 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QFUTEX_WIN_P_H
#define QFUTEX_WIN_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qglobal_p.h>
#include <qdeadlinetimer.h>
#include <qtsan_impl.h>
#include <qt_windows.h>
#define QT_ALWAYS_USE_FUTEX
QT_BEGIN_NAMESPACE
namespace QtWindowsFutex {
constexpr inline bool futexAvailable() { return true; }
template <typename Atomic>
inline void futexWait(Atomic &futex, typename Atomic::Type expectedValue)
{
QtTsan::futexRelease(&futex);
WaitOnAddress(&futex, &expectedValue, sizeof(expectedValue), INFINITE);
QtTsan::futexAcquire(&futex);
}
template <typename Atomic>
inline bool futexWait(Atomic &futex, typename Atomic::Type expectedValue, QDeadlineTimer deadline)
{
using namespace std::chrono;
BOOL r = WaitOnAddress(&futex, &expectedValue, sizeof(expectedValue), DWORD(deadline.remainingTime()));
return r || GetLastError() != ERROR_TIMEOUT;
}
template <typename Atomic> inline void futexWakeAll(Atomic &futex)
{
WakeByAddressAll(&futex);
}
template <typename Atomic> inline void futexWakeOne(Atomic &futex)
{
WakeByAddressSingle(&futex);
}
} // namespace QtWindowsFutex
namespace QtFutex = QtWindowsFutex;
QT_END_NAMESPACE
#endif // QFUTEX_WIN_P_H
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