diff options
Diffstat (limited to 'src/corelib/thread/qbasicatomic.h')
| -rw-r--r-- | src/corelib/thread/qbasicatomic.h | 122 |
1 files changed, 21 insertions, 101 deletions
diff --git a/src/corelib/thread/qbasicatomic.h b/src/corelib/thread/qbasicatomic.h index 18da268270..6d061ea49a 100644 --- a/src/corelib/thread/qbasicatomic.h +++ b/src/corelib/thread/qbasicatomic.h @@ -1,65 +1,11 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Thiago Macieira <thiago@kde.org> -** Copyright (C) 2018 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore/qglobal.h> +// Copyright (C) 2011 Thiago Macieira <thiago@kde.org> +// Copyright (C) 2018 Intel Corporation. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QBASICATOMIC_H #define QBASICATOMIC_H -#if defined(QT_BOOTSTRAPPED) -# include <QtCore/qatomic_bootstrap.h> - -// If C++11 atomics are supported, use them! -// Note that constexpr support is sometimes disabled in QNX or INTEGRITY builds, -// but their libraries have <atomic>. -#elif defined(Q_COMPILER_ATOMICS) && (defined(Q_COMPILER_CONSTEXPR) || defined(Q_OS_QNX) || defined(Q_OS_INTEGRITY)) -# include <QtCore/qatomic_cxx11.h> - -// We only support one fallback: MSVC, because even on version 2015, it lacks full constexpr support -#elif defined(Q_CC_MSVC) -# include <QtCore/qatomic_msvc.h> - -// No fallback -#else -# error "Qt requires C++11 support" -#endif +#include <QtCore/qatomic_cxx11.h> QT_WARNING_PUSH QT_WARNING_DISABLE_MSVC(4522) @@ -73,19 +19,6 @@ QT_END_NAMESPACE #pragma qt_sync_stop_processing #endif -// New atomics - -#if defined(Q_COMPILER_CONSTEXPR) -# if defined(Q_CC_CLANG) && Q_CC_CLANG < 303 - /* - Do not define QT_BASIC_ATOMIC_HAS_CONSTRUCTORS for Clang before version 3.3. - For details about the bug: see http://llvm.org/bugs/show_bug.cgi?id=12670 - */ -# else -# define QT_BASIC_ATOMIC_HAS_CONSTRUCTORS -# endif -#endif - template <typename T> class QBasicAtomicInteger { @@ -93,17 +26,13 @@ public: typedef T Type; typedef QAtomicOps<T> Ops; // static check that this is a valid integer - static_assert(QTypeInfo<T>::isIntegral, "template parameter is not an integral type"); + static_assert(std::is_integral_v<T>, "template parameter is not an integral type"); static_assert(QAtomicOpsSupport<sizeof(T)>::IsSupported, "template parameter is an integral of a size not supported on this platform"); typename Ops::Type _q_value; - // Everything below is either implemented in ../arch/qatomic_XXX.h or (as fallback) in qgenericatomic.h -#if QT_DEPRECATED_SINCE(5, 14) - QT_DEPRECATED_VERSION_X_5_14("Use loadRelaxed") T load() const noexcept { return loadRelaxed(); } - QT_DEPRECATED_VERSION_X_5_14("Use storeRelaxed") void store(T newValue) noexcept { storeRelaxed(newValue); } -#endif - + // Everything below is either implemented in ../arch/qatomic_XXX.h or (as + // fallback) in qgenericatomic.h T loadRelaxed() const noexcept { return Ops::loadRelaxed(_q_value); } void storeRelaxed(T newValue) noexcept { Ops::storeRelaxed(_q_value, newValue); } @@ -112,14 +41,14 @@ public: operator T() const noexcept { return loadAcquire(); } T operator=(T newValue) noexcept { storeRelease(newValue); return newValue; } - static Q_DECL_CONSTEXPR bool isReferenceCountingNative() noexcept { return Ops::isReferenceCountingNative(); } - static Q_DECL_CONSTEXPR bool isReferenceCountingWaitFree() noexcept { return Ops::isReferenceCountingWaitFree(); } + static constexpr bool isReferenceCountingNative() noexcept { return Ops::isReferenceCountingNative(); } + static constexpr bool isReferenceCountingWaitFree() noexcept { return Ops::isReferenceCountingWaitFree(); } bool ref() noexcept { return Ops::ref(_q_value); } bool deref() noexcept { return Ops::deref(_q_value); } - static Q_DECL_CONSTEXPR bool isTestAndSetNative() noexcept { return Ops::isTestAndSetNative(); } - static Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() noexcept { return Ops::isTestAndSetWaitFree(); } + static constexpr bool isTestAndSetNative() noexcept { return Ops::isTestAndSetNative(); } + static constexpr bool isTestAndSetWaitFree() noexcept { return Ops::isTestAndSetWaitFree(); } bool testAndSetRelaxed(T expectedValue, T newValue) noexcept { return Ops::testAndSetRelaxed(_q_value, expectedValue, newValue); } @@ -139,8 +68,8 @@ public: bool testAndSetOrdered(T expectedValue, T newValue, T ¤tValue) noexcept { return Ops::testAndSetOrdered(_q_value, expectedValue, newValue, ¤tValue); } - static Q_DECL_CONSTEXPR bool isFetchAndStoreNative() noexcept { return Ops::isFetchAndStoreNative(); } - static Q_DECL_CONSTEXPR bool isFetchAndStoreWaitFree() noexcept { return Ops::isFetchAndStoreWaitFree(); } + static constexpr bool isFetchAndStoreNative() noexcept { return Ops::isFetchAndStoreNative(); } + static constexpr bool isFetchAndStoreWaitFree() noexcept { return Ops::isFetchAndStoreWaitFree(); } T fetchAndStoreRelaxed(T newValue) noexcept { return Ops::fetchAndStoreRelaxed(_q_value, newValue); } @@ -151,8 +80,8 @@ public: T fetchAndStoreOrdered(T newValue) noexcept { return Ops::fetchAndStoreOrdered(_q_value, newValue); } - static Q_DECL_CONSTEXPR bool isFetchAndAddNative() noexcept { return Ops::isFetchAndAddNative(); } - static Q_DECL_CONSTEXPR bool isFetchAndAddWaitFree() noexcept { return Ops::isFetchAndAddWaitFree(); } + static constexpr bool isFetchAndAddNative() noexcept { return Ops::isFetchAndAddNative(); } + static constexpr bool isFetchAndAddWaitFree() noexcept { return Ops::isFetchAndAddWaitFree(); } T fetchAndAddRelaxed(T valueToAdd) noexcept { return Ops::fetchAndAddRelaxed(_q_value, valueToAdd); } @@ -220,13 +149,11 @@ public: { return fetchAndXorOrdered(v) ^ v; } -#ifdef QT_BASIC_ATOMIC_HAS_CONSTRUCTORS QBasicAtomicInteger() = default; constexpr QBasicAtomicInteger(T value) noexcept : _q_value(value) {} QBasicAtomicInteger(const QBasicAtomicInteger &) = delete; QBasicAtomicInteger &operator=(const QBasicAtomicInteger &) = delete; QBasicAtomicInteger &operator=(const QBasicAtomicInteger &) volatile = delete; -#endif }; typedef QBasicAtomicInteger<int> QBasicAtomicInt; @@ -240,11 +167,6 @@ public: AtomicType _q_value; -#if QT_DEPRECATED_SINCE(5, 14) - QT_DEPRECATED_VERSION_X_5_14("Use loadRelaxed") Type load() const noexcept { return loadRelaxed(); } - QT_DEPRECATED_VERSION_X_5_14("Use storeRelaxed") void store(Type newValue) noexcept { storeRelaxed(newValue); } -#endif - Type loadRelaxed() const noexcept { return Ops::loadRelaxed(_q_value); } void storeRelaxed(Type newValue) noexcept { Ops::storeRelaxed(_q_value, newValue); } @@ -255,8 +177,8 @@ public: Type loadAcquire() const noexcept { return Ops::loadAcquire(_q_value); } void storeRelease(Type newValue) noexcept { Ops::storeRelease(_q_value, newValue); } - static Q_DECL_CONSTEXPR bool isTestAndSetNative() noexcept { return Ops::isTestAndSetNative(); } - static Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() noexcept { return Ops::isTestAndSetWaitFree(); } + static constexpr bool isTestAndSetNative() noexcept { return Ops::isTestAndSetNative(); } + static constexpr bool isTestAndSetWaitFree() noexcept { return Ops::isTestAndSetWaitFree(); } bool testAndSetRelaxed(Type expectedValue, Type newValue) noexcept { return Ops::testAndSetRelaxed(_q_value, expectedValue, newValue); } @@ -276,8 +198,8 @@ public: bool testAndSetOrdered(Type expectedValue, Type newValue, Type ¤tValue) noexcept { return Ops::testAndSetOrdered(_q_value, expectedValue, newValue, ¤tValue); } - static Q_DECL_CONSTEXPR bool isFetchAndStoreNative() noexcept { return Ops::isFetchAndStoreNative(); } - static Q_DECL_CONSTEXPR bool isFetchAndStoreWaitFree() noexcept { return Ops::isFetchAndStoreWaitFree(); } + static constexpr bool isFetchAndStoreNative() noexcept { return Ops::isFetchAndStoreNative(); } + static constexpr bool isFetchAndStoreWaitFree() noexcept { return Ops::isFetchAndStoreWaitFree(); } Type fetchAndStoreRelaxed(Type newValue) noexcept { return Ops::fetchAndStoreRelaxed(_q_value, newValue); } @@ -288,8 +210,8 @@ public: Type fetchAndStoreOrdered(Type newValue) noexcept { return Ops::fetchAndStoreOrdered(_q_value, newValue); } - static Q_DECL_CONSTEXPR bool isFetchAndAddNative() noexcept { return Ops::isFetchAndAddNative(); } - static Q_DECL_CONSTEXPR bool isFetchAndAddWaitFree() noexcept { return Ops::isFetchAndAddWaitFree(); } + static constexpr bool isFetchAndAddNative() noexcept { return Ops::isFetchAndAddNative(); } + static constexpr bool isFetchAndAddWaitFree() noexcept { return Ops::isFetchAndAddWaitFree(); } Type fetchAndAddRelaxed(qptrdiff valueToAdd) noexcept { return Ops::fetchAndAddRelaxed(_q_value, valueToAdd); } @@ -322,13 +244,11 @@ public: Type operator-=(qptrdiff valueToSub) noexcept { return fetchAndSubOrdered(valueToSub) - valueToSub; } -#ifdef QT_BASIC_ATOMIC_HAS_CONSTRUCTORS QBasicAtomicPointer() = default; constexpr QBasicAtomicPointer(Type value) noexcept : _q_value(value) {} QBasicAtomicPointer(const QBasicAtomicPointer &) = delete; QBasicAtomicPointer &operator=(const QBasicAtomicPointer &) = delete; QBasicAtomicPointer &operator=(const QBasicAtomicPointer &) volatile = delete; -#endif }; #ifndef Q_BASIC_ATOMIC_INITIALIZER |