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-/****************************************************************************
-**
-** 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
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