From 9fa2626ef8760fe2923af5b47d027e63d9333776 Mon Sep 17 00:00:00 2001 From: Thiago Macieira Date: Sun, 18 Mar 2018 09:40:01 -0700 Subject: Remove src/corelib/arch, merging with src/corelib/thread There is no more architecture-specific code. Change-Id: Ie9d9215342d449c48a11fffd151d11411cd73fc7 Reviewed-by: Lars Knoll --- src/corelib/arch/qatomic_cxx11.h | 473 --------------------------------------- 1 file changed, 473 deletions(-) delete mode 100644 src/corelib/arch/qatomic_cxx11.h (limited to 'src/corelib/arch/qatomic_cxx11.h') diff --git a/src/corelib/arch/qatomic_cxx11.h b/src/corelib/arch/qatomic_cxx11.h deleted file mode 100644 index 2fc0bf5419..0000000000 --- a/src/corelib/arch/qatomic_cxx11.h +++ /dev/null @@ -1,473 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Thiago Macieira -** 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QATOMIC_CXX11_H -#define QATOMIC_CXX11_H - -#include -#include - -QT_BEGIN_NAMESPACE - -#if 0 -// silence syncqt warnings -QT_END_NAMESPACE -#pragma qt_sync_skip_header_check -#pragma qt_sync_stop_processing -#endif - -/* Attempt to detect whether the atomic operations exist in hardware - * or whether they are emulated by way of a lock. - * - * C++11 29.4 [atomics.lockfree] p1 says - * - * The ATOMIC_..._LOCK_FREE macros indicate the lock-free property of the - * corresponding atomic types, with the signed and unsigned variants grouped - * together. The properties also apply to the corresponding (partial) - * specializations of the atomic template. A value of 0 indicates that the - * types are never lock-free. A value of 1 indicates that the types are - * sometimes lock-free. A value of 2 indicates that the types are always - * lock-free. - * - * We have a problem when the value is 1: we'd need to check at runtime, but - * QAtomicInteger requires a constexpr answer (defect introduced in Qt 5.0). So - * we'll err in the side of caution and say it isn't. - */ - -// ### Qt 6: make non-constexpr (see above) -template struct QAtomicTraits -{ static Q_DECL_CONSTEXPR inline bool isLockFree(); }; - -#define Q_ATOMIC_INT32_IS_SUPPORTED -#if ATOMIC_INT_LOCK_FREE == 2 -# define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT32_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT32_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_ADD_IS_ALWAYS_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<4>::isLockFree() -{ return true; } -#elif ATOMIC_INT_LOCK_FREE == 1 -# define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT32_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT32_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_ADD_IS_SOMETIMES_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<4>::isLockFree() -{ return false; } -#else -# define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_INT_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NEVER_NATIVE -# define Q_ATOMIC_INT32_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_INT32_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_INT32_FETCH_AND_ADD_IS_NEVER_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<4>::isLockFree() -{ return false; } -#endif - -#if ATOMIC_POINTER_LOCK_FREE == 2 -# define Q_ATOMIC_POINTER_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE -#elif ATOMIC_POINTER_LOCK_FREE == 1 -# define Q_ATOMIC_POINTER_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_POINTER_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_SOMETIMES_NATIVE -#else -# define Q_ATOMIC_POINTER_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NEVER_NATIVE -#endif - -template<> struct QAtomicOpsSupport<1> { enum { IsSupported = 1 }; }; -#define Q_ATOMIC_INT8_IS_SUPPORTED -#if ATOMIC_CHAR_LOCK_FREE == 2 -# define Q_ATOMIC_INT8_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT8_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_ADD_IS_ALWAYS_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<1>::isLockFree() -{ return true; } -#elif ATOMIC_CHAR_LOCK_FREE == 1 -# define Q_ATOMIC_INT8_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT8_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_ADD_IS_SOMETIMES_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<1>::isLockFree() -{ return false; } -#else -# define Q_ATOMIC_INT8_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_INT8_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_INT8_FETCH_AND_ADD_IS_NEVER_NATIVE - -template <> Q_DECL_CONSTEXPR bool QAtomicTraits<1>::isLockFree() -{ return false; } -#endif - -template<> struct QAtomicOpsSupport<2> { enum { IsSupported = 1 }; }; -#define Q_ATOMIC_INT16_IS_SUPPORTED -#if ATOMIC_SHORT_LOCK_FREE == 2 -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_ALWAYS_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<2>::isLockFree() -{ return false; } -#elif ATOMIC_SHORT_LOCK_FREE == 1 -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_SOMETIMES_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<2>::isLockFree() -{ return false; } -#else -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_NEVER_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<2>::isLockFree() -{ return false; } -#endif - -#if QT_CONFIG(std_atomic64) -template<> struct QAtomicOpsSupport<8> { enum { IsSupported = 1 }; }; -# define Q_ATOMIC_INT64_IS_SUPPORTED -# if ATOMIC_LLONG_LOCK_FREE == 2 -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_ALWAYS_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_ALWAYS_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<8>::isLockFree() -{ return true; } -# elif ATOMIC_LLONG_LOCK_FREE == 1 -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_SOMETIMES_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_SOMETIMES_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<8>::isLockFree() -{ return false; } -# else -# define Q_ATOMIC_INT16_REFERENCE_COUNTING_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_TEST_AND_SET_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_STORE_IS_NEVER_NATIVE -# define Q_ATOMIC_INT16_FETCH_AND_ADD_IS_NEVER_NATIVE - -template <> Q_DECL_CONSTEXPR inline bool QAtomicTraits<8>::isLockFree() -{ return false; } -# endif -#endif - -template struct QAtomicOps -{ - typedef std::atomic Type; - - template static inline - T load(const std::atomic &_q_value) Q_DECL_NOTHROW - { - return _q_value.load(std::memory_order_relaxed); - } - - template static inline - T load(const volatile std::atomic &_q_value) Q_DECL_NOTHROW - { - return _q_value.load(std::memory_order_relaxed); - } - - template static inline - T loadAcquire(const std::atomic &_q_value) Q_DECL_NOTHROW - { - return _q_value.load(std::memory_order_acquire); - } - - template static inline - T loadAcquire(const volatile std::atomic &_q_value) Q_DECL_NOTHROW - { - return _q_value.load(std::memory_order_acquire); - } - - template static inline - void store(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - _q_value.store(newValue, std::memory_order_relaxed); - } - - template static inline - void storeRelease(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - _q_value.store(newValue, std::memory_order_release); - } - - static inline Q_DECL_CONSTEXPR bool isReferenceCountingNative() Q_DECL_NOTHROW { return isTestAndSetNative(); } - static inline Q_DECL_CONSTEXPR bool isReferenceCountingWaitFree() Q_DECL_NOTHROW { return false; } - template - static inline bool ref(std::atomic &_q_value) - { - return ++_q_value != 0; - } - - template - static inline bool deref(std::atomic &_q_value) Q_DECL_NOTHROW - { - return --_q_value != 0; - } - - static inline Q_DECL_CONSTEXPR bool isTestAndSetNative() Q_DECL_NOTHROW - { return QAtomicTraits::isLockFree(); } - static inline Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() Q_DECL_NOTHROW { return false; } - - template - static bool testAndSetRelaxed(std::atomic &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) Q_DECL_NOTHROW - { - bool tmp = _q_value.compare_exchange_strong(expectedValue, newValue, std::memory_order_relaxed, std::memory_order_relaxed); - if (currentValue) - *currentValue = expectedValue; - return tmp; - } - - template - static bool testAndSetAcquire(std::atomic &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) Q_DECL_NOTHROW - { - bool tmp = _q_value.compare_exchange_strong(expectedValue, newValue, std::memory_order_acquire, std::memory_order_acquire); - if (currentValue) - *currentValue = expectedValue; - return tmp; - } - - template - static bool testAndSetRelease(std::atomic &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) Q_DECL_NOTHROW - { - bool tmp = _q_value.compare_exchange_strong(expectedValue, newValue, std::memory_order_release, std::memory_order_relaxed); - if (currentValue) - *currentValue = expectedValue; - return tmp; - } - - template - static bool testAndSetOrdered(std::atomic &_q_value, T expectedValue, T newValue, T *currentValue = nullptr) Q_DECL_NOTHROW - { - bool tmp = _q_value.compare_exchange_strong(expectedValue, newValue, std::memory_order_acq_rel, std::memory_order_acquire); - if (currentValue) - *currentValue = expectedValue; - return tmp; - } - - static inline Q_DECL_CONSTEXPR bool isFetchAndStoreNative() Q_DECL_NOTHROW { return isTestAndSetNative(); } - static inline Q_DECL_CONSTEXPR bool isFetchAndStoreWaitFree() Q_DECL_NOTHROW { return false; } - - template - static T fetchAndStoreRelaxed(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - return _q_value.exchange(newValue, std::memory_order_relaxed); - } - - template - static T fetchAndStoreAcquire(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - return _q_value.exchange(newValue, std::memory_order_acquire); - } - - template - static T fetchAndStoreRelease(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - return _q_value.exchange(newValue, std::memory_order_release); - } - - template - static T fetchAndStoreOrdered(std::atomic &_q_value, T newValue) Q_DECL_NOTHROW - { - return _q_value.exchange(newValue, std::memory_order_acq_rel); - } - - static inline Q_DECL_CONSTEXPR bool isFetchAndAddNative() Q_DECL_NOTHROW { return isTestAndSetNative(); } - static inline Q_DECL_CONSTEXPR bool isFetchAndAddWaitFree() Q_DECL_NOTHROW { return false; } - - template static inline - T fetchAndAddRelaxed(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_add(valueToAdd, std::memory_order_relaxed); - } - - template static inline - T fetchAndAddAcquire(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_add(valueToAdd, std::memory_order_acquire); - } - - template static inline - T fetchAndAddRelease(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_add(valueToAdd, std::memory_order_release); - } - - template static inline - T fetchAndAddOrdered(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_add(valueToAdd, std::memory_order_acq_rel); - } - - template static inline - T fetchAndSubRelaxed(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_sub(valueToAdd, std::memory_order_relaxed); - } - - template static inline - T fetchAndSubAcquire(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_sub(valueToAdd, std::memory_order_acquire); - } - - template static inline - T fetchAndSubRelease(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_sub(valueToAdd, std::memory_order_release); - } - - template static inline - T fetchAndSubOrdered(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_sub(valueToAdd, std::memory_order_acq_rel); - } - - template static inline - T fetchAndAndRelaxed(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_and(valueToAdd, std::memory_order_relaxed); - } - - template static inline - T fetchAndAndAcquire(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_and(valueToAdd, std::memory_order_acquire); - } - - template static inline - T fetchAndAndRelease(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_and(valueToAdd, std::memory_order_release); - } - - template static inline - T fetchAndAndOrdered(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_and(valueToAdd, std::memory_order_acq_rel); - } - - template static inline - T fetchAndOrRelaxed(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_or(valueToAdd, std::memory_order_relaxed); - } - - template static inline - T fetchAndOrAcquire(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_or(valueToAdd, std::memory_order_acquire); - } - - template static inline - T fetchAndOrRelease(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_or(valueToAdd, std::memory_order_release); - } - - template static inline - T fetchAndOrOrdered(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_or(valueToAdd, std::memory_order_acq_rel); - } - - template static inline - T fetchAndXorRelaxed(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_xor(valueToAdd, std::memory_order_relaxed); - } - - template static inline - T fetchAndXorAcquire(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_xor(valueToAdd, std::memory_order_acquire); - } - - template static inline - T fetchAndXorRelease(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_xor(valueToAdd, std::memory_order_release); - } - - template static inline - T fetchAndXorOrdered(std::atomic &_q_value, typename QAtomicAdditiveType::AdditiveT valueToAdd) Q_DECL_NOTHROW - { - return _q_value.fetch_xor(valueToAdd, std::memory_order_acq_rel); - } -}; - -#if defined(Q_COMPILER_CONSTEXPR) && defined(Q_COMPILER_DEFAULT_MEMBERS) && defined(Q_COMPILER_DELETE_MEMBERS) -# define Q_BASIC_ATOMIC_INITIALIZER(a) { a } -#else -# define Q_BASIC_ATOMIC_INITIALIZER(a) { ATOMIC_VAR_INIT(a) } -#endif - -QT_END_NAMESPACE - -#endif // QATOMIC_CXX0X_H -- cgit v1.2.3