| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 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. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** 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. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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 |