diff options
Diffstat (limited to 'src/corelib/tools/qsharedpointer_impl.h')
| -rw-r--r-- | src/corelib/tools/qsharedpointer_impl.h | 54 |
1 files changed, 28 insertions, 26 deletions
diff --git a/src/corelib/tools/qsharedpointer_impl.h b/src/corelib/tools/qsharedpointer_impl.h index 463a4b9b2d..d262e4ebc9 100644 --- a/src/corelib/tools/qsharedpointer_impl.h +++ b/src/corelib/tools/qsharedpointer_impl.h @@ -1,14 +1,13 @@ /**************************************************************************** ** -** Copyright (C) 2021 The Qt Company Ltd. +** Copyright (C) 2019 The Qt Company Ltd. ** Copyright (C) 2020 Intel Corporation. ** Copyright (C) 2019 Klarälvdalens Datakonsult AB. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:COMM$ -** +** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the @@ -17,25 +16,26 @@ ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** -** $QT_END_LICENSE$ -** -** -** -** -** -** -** -** -** -** -** -** -** -** -** -** +** 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. ** +** $QT_END_LICENSE$ ** ****************************************************************************/ @@ -156,6 +156,12 @@ namespace QtSharedPointer { inline void checkQObjectShared(...) { } inline void setQObjectShared(...) { } + // Normally, only subclasses of ExternalRefCountData are allocated + // One exception exists in getAndRef; that uses the global operator new + // to prevent a mismatch with the custom operator delete + inline void *operator new(std::size_t) = delete; + // placement new + inline void *operator new(std::size_t, void *ptr) noexcept { return ptr; } inline void operator delete(void *ptr) { ::operator delete(ptr); } inline void operator delete(void *, void *) { } }; @@ -881,7 +887,7 @@ Q_INLINE_TEMPLATE bool operator<(T *ptr1, const QSharedPointer<X> &ptr2) template <class T> Q_INLINE_TEMPLATE uint qHash(const QSharedPointer<T> &ptr, uint seed = 0) { - return QT_PREPEND_NAMESPACE(qHash)(ptr.data(), seed); + return qHash(ptr.data(), seed); } @@ -1012,15 +1018,11 @@ std::shared_ptr<X> qobject_pointer_cast(std::shared_ptr<T> &&src) using element_type = typename std::shared_ptr<X>::element_type; auto castResult = qobject_cast<element_type *>(src.get()); if (castResult) { - auto result = std::shared_ptr<X>(std::move(src), castResult); -#if __cplusplus <= 201703L // C++2a's move aliasing constructor will leave src empty. // Before C++2a we don't really know if the compiler has support for it. // The move aliasing constructor is the resolution for LWG2996, // which does not impose a feature-testing macro. So: clear src. - src.reset(); -#endif - return result; + return std::shared_ptr<X>(qExchange(src, nullptr), castResult); } return std::shared_ptr<X>(); } |