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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2011 Thiago Macieira <thiago@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QATOMIC_BOOTSTRAP_H
#define QATOMIC_BOOTSTRAP_H
#include <QtCore/qgenericatomic.h>
QT_BEGIN_NAMESPACE
#if 0
// silence syncqt warnings
QT_END_NAMESPACE
#pragma qt_sync_skip_header_check
#pragma qt_sync_stop_processing
#endif
#define Q_ATOMIC_INT8_IS_SUPPORTED
template<> struct QAtomicOpsSupport<1> { enum { IsSupported = 1 }; };
#define Q_ATOMIC_INT16_IS_SUPPORTED
template<> struct QAtomicOpsSupport<2> { enum { IsSupported = 1 }; };
#define Q_ATOMIC_INT32_IS_SUPPORTED
#define Q_ATOMIC_INT64_IS_SUPPORTED
template<> struct QAtomicOpsSupport<8> { enum { IsSupported = 1 }; };
template <typename T> struct QAtomicOps: QGenericAtomicOps<QAtomicOps<T> >
{
typedef T Type;
static bool ref(T &_q_value) noexcept
{
return ++_q_value != 0;
}
static bool deref(T &_q_value) noexcept
{
return --_q_value != 0;
}
static bool testAndSetRelaxed(T &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) noexcept
{
if (currentValue)
*currentValue = _q_value;
if (_q_value == expectedValue) {
_q_value = newValue;
return true;
}
return false;
}
static T fetchAndStoreRelaxed(T &_q_value, T newValue) noexcept
{
T tmp = _q_value;
_q_value = newValue;
return tmp;
}
template <typename AdditiveType> static
T fetchAndAddRelaxed(T &_q_value, AdditiveType valueToAdd) noexcept
{
T returnValue = _q_value;
_q_value += valueToAdd;
return returnValue;
}
};
QT_END_NAMESPACE
#endif // QATOMIC_BOOTSTRAP_H
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