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Diffstat (limited to 'src/corelib/arch/qatomic_vxworks.h')
-rw-r--r-- | src/corelib/arch/qatomic_vxworks.h | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/src/corelib/arch/qatomic_vxworks.h b/src/corelib/arch/qatomic_vxworks.h new file mode 100644 index 0000000..573a44d --- /dev/null +++ b/src/corelib/arch/qatomic_vxworks.h @@ -0,0 +1,318 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the qmake spec of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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 are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QATOMIC_VXWORKS_H +#define QATOMIC_VXWORKS_H + +QT_BEGIN_HEADER + +#if defined(__ppc) +# include <QtCore/qatomic_powerpc.h> +#else // generic implementation with taskLock() + +#if 0 +// we don't want to include the system header here for two function prototypes, +// because it pulls in a _lot_ of stuff that pollutes the global namespace +# include <vxWorksCommon.h> +# include <taskLib.h> +#else +extern "C" int taskLock(); +extern "C" int taskUnlock(); +#endif + + + +QT_BEGIN_NAMESPACE + +#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE + +inline bool QBasicAtomicInt::isReferenceCountingNative() +{ return false; } +inline bool QBasicAtomicInt::isReferenceCountingWaitFree() +{ return false; } + +#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE + +inline bool QBasicAtomicInt::isTestAndSetNative() +{ return false; } +inline bool QBasicAtomicInt::isTestAndSetWaitFree() +{ return false; } + +#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE + +inline bool QBasicAtomicInt::isFetchAndStoreNative() +{ return false; } +inline bool QBasicAtomicInt::isFetchAndStoreWaitFree() +{ return false; } + +#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE + +inline bool QBasicAtomicInt::isFetchAndAddNative() +{ return false; } +inline bool QBasicAtomicInt::isFetchAndAddWaitFree() +{ return false; } + +#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative() +{ return false; } +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree() +{ return false; } + +#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative() +{ return false; } +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree() +{ return false; } + +#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative() +{ return false; } +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree() +{ return false; } + +// Reference counting + +inline bool QBasicAtomicInt::ref() +{ + taskLock(); + bool ret = (++_q_value != 0); + taskUnlock(); + return ret; +} + +inline bool QBasicAtomicInt::deref() +{ + taskLock(); + bool ret = (--_q_value != 0); + taskUnlock(); + return ret; +} + +// Test-and-set for integers + +inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue) +{ + taskLock(); + if (_q_value == expectedValue) { + _q_value = newValue; + taskUnlock(); + return true; + } + taskUnlock(); + return false; +} + +inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +// Fetch-and-store for integers + +inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue) +{ + taskLock(); + int returnValue = _q_value; + _q_value = newValue; + taskUnlock(); + return returnValue; +} + +inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +// Fetch-and-add for integers + +inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd) +{ + taskLock(); + int originalValue = _q_value; + _q_value += valueToAdd; + taskUnlock(); + return originalValue; +} + +inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +// Test and set for pointers + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue) +{ + taskLock(); + if (_q_value == expectedValue) { + _q_value = newValue; + taskUnlock(); + return true; + } + taskUnlock(); + return false; +} + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +template <typename T> +Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +// Fetch and store for pointers + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue) +{ + taskLock(); + T *returnValue = (_q_value); + _q_value = newValue; + taskUnlock(); + return returnValue; +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +// Fetch and add for pointers + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd) +{ + taskLock(); + T *returnValue = (_q_value); + _q_value += valueToAdd; + taskUnlock(); + return returnValue; +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +template <typename T> +Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +QT_END_NAMESPACE + +#endif // generic implementation with taskLock() + +QT_END_HEADER + +#endif // QATOMIC_VXWORKS_H |