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Diffstat (limited to 'qtinterface/qt4/Qt/qatomic.h')
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diff --git a/qtinterface/qt4/Qt/qatomic.h b/qtinterface/qt4/Qt/qatomic.h new file mode 100644 index 0000000..e9e4703 --- /dev/null +++ b/qtinterface/qt4/Qt/qatomic.h @@ -0,0 +1,227 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QATOMIC_H +#define QATOMIC_H + +#include <QtCore/qglobal.h> +#include <QtCore/qbasicatomic.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Core) + +// High-level atomic integer operations +class Q_CORE_EXPORT QAtomicInt : public QBasicAtomicInt +{ +public: + inline QAtomicInt(int value = 0) + { +#ifdef QT_ARCH_PARISC + this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; +#endif + _q_value = value; + } + inline QAtomicInt(const QAtomicInt &other) + { +#ifdef QT_ARCH_PARISC + this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; +#endif + _q_value = other._q_value; + } + + inline QAtomicInt &operator=(int value) + { + (void) QBasicAtomicInt::operator=(value); + return *this; + } + + inline QAtomicInt &operator=(const QAtomicInt &other) + { + (void) QBasicAtomicInt::operator=(other); + return *this; + } + +#ifdef qdoc + bool operator==(int value) const; + bool operator!=(int value) const; + bool operator!() const; + operator int() const; + + static bool isReferenceCountingNative(); + static bool isReferenceCountingWaitFree(); + + bool ref(); + bool deref(); + + static bool isTestAndSetNative(); + static bool isTestAndSetWaitFree(); + + bool testAndSetRelaxed(int expectedValue, int newValue); + bool testAndSetAcquire(int expectedValue, int newValue); + bool testAndSetRelease(int expectedValue, int newValue); + bool testAndSetOrdered(int expectedValue, int newValue); + + static bool isFetchAndStoreNative(); + static bool isFetchAndStoreWaitFree(); + + int fetchAndStoreRelaxed(int newValue); + int fetchAndStoreAcquire(int newValue); + int fetchAndStoreRelease(int newValue); + int fetchAndStoreOrdered(int newValue); + + static bool isFetchAndAddNative(); + static bool isFetchAndAddWaitFree(); + + int fetchAndAddRelaxed(int valueToAdd); + int fetchAndAddAcquire(int valueToAdd); + int fetchAndAddRelease(int valueToAdd); + int fetchAndAddOrdered(int valueToAdd); +#endif +}; + +// High-level atomic pointer operations +template <typename T> +class QAtomicPointer : public QBasicAtomicPointer<T> +{ +public: + inline QAtomicPointer(T *value = 0) + { +#ifdef QT_ARCH_PARISC + this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; +#endif + QBasicAtomicPointer<T>::_q_value = value; + } + inline QAtomicPointer(const QAtomicPointer<T> &other) + { +#ifdef QT_ARCH_PARISC + this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1; +#endif + QBasicAtomicPointer<T>::_q_value = other._q_value; + } + + inline QAtomicPointer<T> &operator=(T *value) + { + (void) QBasicAtomicPointer<T>::operator=(value); + return *this; + } + + inline QAtomicPointer<T> &operator=(const QAtomicPointer<T> &other) + { + (void) QBasicAtomicPointer<T>::operator=(other); + return *this; + } + +#ifdef qdoc + bool operator==(T *value) const; + bool operator!=(T *value) const; + bool operator!() const; + operator T *() const; + T *operator->() const; + + static bool isTestAndSetNative(); + static bool isTestAndSetWaitFree(); + + bool testAndSetRelaxed(T *expectedValue, T *newValue); + bool testAndSetAcquire(T *expectedValue, T *newValue); + bool testAndSetRelease(T *expectedValue, T *newValue); + bool testAndSetOrdered(T *expectedValue, T *newValue); + + static bool isFetchAndStoreNative(); + static bool isFetchAndStoreWaitFree(); + + T *fetchAndStoreRelaxed(T *newValue); + T *fetchAndStoreAcquire(T *newValue); + T *fetchAndStoreRelease(T *newValue); + T *fetchAndStoreOrdered(T *newValue); + + static bool isFetchAndAddNative(); + static bool isFetchAndAddWaitFree(); + + T *fetchAndAddRelaxed(qptrdiff valueToAdd); + T *fetchAndAddAcquire(qptrdiff valueToAdd); + T *fetchAndAddRelease(qptrdiff valueToAdd); + T *fetchAndAddOrdered(qptrdiff valueToAdd); +#endif +}; + +/*! + This is a helper for the assignment operators of implicitly + shared classes. Your assignment operator should look like this: + + \snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 0 +*/ +template <typename T> +inline void qAtomicAssign(T *&d, T *x) +{ + if (d == x) + return; + x->ref.ref(); + if (!d->ref.deref()) + delete d; + d = x; +} + +/*! + This is a helper for the detach method of implicitly shared + classes. Your private class needs a copy constructor which copies + the members and sets the refcount to 1. After that, your detach + function should look like this: + + \snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 1 +*/ +template <typename T> +inline void qAtomicDetach(T *&d) +{ + if (d->ref == 1) + return; + T *x = d; + d = new T(*d); + if (!x->ref.deref()) + delete x; +} + +QT_END_NAMESPACE +QT_END_HEADER + +#endif // QATOMIC_H |