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-rw-r--r--src/corelib/thread/qgenericatomic.h377
1 files changed, 6 insertions, 371 deletions
diff --git a/src/corelib/thread/qgenericatomic.h b/src/corelib/thread/qgenericatomic.h
index 65b6974f4d..91ccbbd1cd 100644
--- a/src/corelib/thread/qgenericatomic.h
+++ b/src/corelib/thread/qgenericatomic.h
@@ -1,48 +1,13 @@
-/****************************************************************************
-**
-** Copyright (C) 2011 Thiago Macieira <thiago@kde.org>
-** Copyright (C) 2016 Intel Corporation.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtCore module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2011 Thiago Macieira <thiago@kde.org>
+// Copyright (C) 2016 Intel Corporation.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QGENERICATOMIC_H
#define QGENERICATOMIC_H
-#include <QtCore/qglobal.h>
-#include <QtCore/qtypeinfo.h>
+#include <QtCore/qcompilerdetection.h>
+#include <QtCore/qtconfigmacros.h>
+#include <QtCore/qtypes.h>
QT_BEGIN_NAMESPACE
@@ -69,335 +34,5 @@ template <typename T> struct QAtomicAdditiveType<T *>
static const int AddScale = sizeof(T);
};
-// not really atomic...
-template <typename BaseClass> struct QGenericAtomicOps
-{
- template <typename T> struct AtomicType { typedef T Type; typedef T *PointerType; };
-
- template <typename T> static void acquireMemoryFence(const T &_q_value) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- }
- template <typename T> static void releaseMemoryFence(const T &_q_value) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- }
- template <typename T> static void orderedMemoryFence(const T &) noexcept
- {
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T load(const T &_q_value) noexcept
- {
- return _q_value;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- void store(T &_q_value, X newValue) noexcept
- {
- _q_value = newValue;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T loadRelaxed(const T &_q_value) noexcept
- {
- return _q_value;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- void storeRelaxed(T &_q_value, X newValue) noexcept
- {
- _q_value = newValue;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T loadAcquire(const T &_q_value) noexcept
- {
- T tmp = *static_cast<const volatile T *>(&_q_value);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- void storeRelease(T &_q_value, X newValue) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- *static_cast<volatile T *>(&_q_value) = newValue;
- }
-
- static inline constexpr bool isReferenceCountingNative() noexcept
- { return BaseClass::isFetchAndAddNative(); }
- static inline constexpr bool isReferenceCountingWaitFree() noexcept
- { return BaseClass::isFetchAndAddWaitFree(); }
- template <typename T> static Q_ALWAYS_INLINE
- bool ref(T &_q_value) noexcept
- {
- return BaseClass::fetchAndAddRelaxed(_q_value, 1) != T(-1);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- bool deref(T &_q_value) noexcept
- {
- return BaseClass::fetchAndAddRelaxed(_q_value, -1) != 1;
- }
-
-#if 0
- // These functions have no default implementation
- // Architectures must implement them
- static inline constexpr bool isTestAndSetNative() noexcept;
- static inline constexpr bool isTestAndSetWaitFree() noexcept;
- template <typename T, typename X> static inline
- bool testAndSetRelaxed(T &_q_value, X expectedValue, X newValue) noexcept;
- template <typename T, typename X> static inline
- bool testAndSetRelaxed(T &_q_value, X expectedValue, X newValue, X *currentValue) noexcept;
-#endif
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetAcquire(T &_q_value, X expectedValue, X newValue) noexcept
- {
- bool tmp = BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetRelease(T &_q_value, X expectedValue, X newValue) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue);
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetOrdered(T &_q_value, X expectedValue, X newValue) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue);
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetAcquire(T &_q_value, X expectedValue, X newValue, X *currentValue) noexcept
- {
- bool tmp = BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue, currentValue);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetRelease(T &_q_value, X expectedValue, X newValue, X *currentValue) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue, currentValue);
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- bool testAndSetOrdered(T &_q_value, X expectedValue, X newValue, X *currentValue) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::testAndSetRelaxed(_q_value, expectedValue, newValue, currentValue);
- }
-
- static inline constexpr bool isFetchAndStoreNative() noexcept { return false; }
- static inline constexpr bool isFetchAndStoreWaitFree() noexcept { return false; }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- T fetchAndStoreRelaxed(T &_q_value, X newValue) noexcept
- {
- // implement fetchAndStore on top of testAndSet
- Q_FOREVER {
- T tmp = loadRelaxed(_q_value);
- if (BaseClass::testAndSetRelaxed(_q_value, tmp, newValue))
- return tmp;
- }
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- T fetchAndStoreAcquire(T &_q_value, X newValue) noexcept
- {
- T tmp = BaseClass::fetchAndStoreRelaxed(_q_value, newValue);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- T fetchAndStoreRelease(T &_q_value, X newValue) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndStoreRelaxed(_q_value, newValue);
- }
-
- template <typename T, typename X> static Q_ALWAYS_INLINE
- T fetchAndStoreOrdered(T &_q_value, X newValue) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndStoreRelaxed(_q_value, newValue);
- }
-
- static inline constexpr bool isFetchAndAddNative() noexcept { return false; }
- static inline constexpr bool isFetchAndAddWaitFree() noexcept { return false; }
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAddRelaxed(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT valueToAdd) noexcept
- {
- // implement fetchAndAdd on top of testAndSet
- Q_FOREVER {
- T tmp = BaseClass::loadRelaxed(_q_value);
- if (BaseClass::testAndSetRelaxed(_q_value, tmp, T(tmp + valueToAdd)))
- return tmp;
- }
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAddAcquire(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT valueToAdd) noexcept
- {
- T tmp = BaseClass::fetchAndAddRelaxed(_q_value, valueToAdd);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAddRelease(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT valueToAdd) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndAddRelaxed(_q_value, valueToAdd);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAddOrdered(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT valueToAdd) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndAddRelaxed(_q_value, valueToAdd);
- }
-
-QT_WARNING_PUSH
-QT_WARNING_DISABLE_MSVC(4146) // unary minus operator applied to unsigned type, result still unsigned
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndSubRelaxed(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT operand) noexcept
- {
- // implement fetchAndSub on top of fetchAndAdd
- return fetchAndAddRelaxed(_q_value, -operand);
- }
-QT_WARNING_POP
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndSubAcquire(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT operand) noexcept
- {
- T tmp = BaseClass::fetchAndSubRelaxed(_q_value, operand);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndSubRelease(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT operand) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndSubRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndSubOrdered(T &_q_value, typename QAtomicAdditiveType<T>::AdditiveT operand) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndSubRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAndRelaxed(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- // implement fetchAndAnd on top of testAndSet
- T tmp = BaseClass::loadRelaxed(_q_value);
- Q_FOREVER {
- if (BaseClass::testAndSetRelaxed(_q_value, tmp, T(tmp & operand), &tmp))
- return tmp;
- }
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAndAcquire(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- T tmp = BaseClass::fetchAndAndRelaxed(_q_value, operand);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAndRelease(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndAndRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndAndOrdered(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndAndRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndOrRelaxed(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- // implement fetchAndOr on top of testAndSet
- T tmp = BaseClass::loadRelaxed(_q_value);
- Q_FOREVER {
- if (BaseClass::testAndSetRelaxed(_q_value, tmp, T(tmp | operand), &tmp))
- return tmp;
- }
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndOrAcquire(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- T tmp = BaseClass::fetchAndOrRelaxed(_q_value, operand);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndOrRelease(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndOrRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndOrOrdered(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndOrRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndXorRelaxed(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- // implement fetchAndXor on top of testAndSet
- T tmp = BaseClass::loadRelaxed(_q_value);
- Q_FOREVER {
- if (BaseClass::testAndSetRelaxed(_q_value, tmp, T(tmp ^ operand), &tmp))
- return tmp;
- }
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndXorAcquire(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- T tmp = BaseClass::fetchAndXorRelaxed(_q_value, operand);
- BaseClass::acquireMemoryFence(_q_value);
- return tmp;
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndXorRelease(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::releaseMemoryFence(_q_value);
- return BaseClass::fetchAndXorRelaxed(_q_value, operand);
- }
-
- template <typename T> static Q_ALWAYS_INLINE
- T fetchAndXorOrdered(T &_q_value, typename std::enable_if<QTypeInfo<T>::isIntegral, T>::type operand) noexcept
- {
- BaseClass::orderedMemoryFence(_q_value);
- return BaseClass::fetchAndXorRelaxed(_q_value, operand);
- }
-};
-
QT_END_NAMESPACE
#endif // QGENERICATOMIC_H