From 4c3c7eaa2d225ecc0c16644f1a23e848bf539164 Mon Sep 17 00:00:00 2001 From: tpearson Date: Mon, 2 Aug 2010 19:12:15 +0000 Subject: Starting work on Qt4 interface... git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/dependencies/tqtinterface@1158413 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- qtinterface/qt4/Qt/qatomic_sh.h | 330 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 330 insertions(+) create mode 100644 qtinterface/qt4/Qt/qatomic_sh.h (limited to 'qtinterface/qt4/Qt/qatomic_sh.h') diff --git a/qtinterface/qt4/Qt/qatomic_sh.h b/qtinterface/qt4/Qt/qatomic_sh.h new file mode 100644 index 0000000..89c08f3 --- /dev/null +++ b/qtinterface/qt4/Qt/qatomic_sh.h @@ -0,0 +1,330 @@ +/**************************************************************************** +** +** 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_SH_H +#define QATOMIC_SH_H + +QT_BEGIN_HEADER + +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 +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isTestAndSetNative() +{ return false; } +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isTestAndSetWaitFree() +{ return false; } + +#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE + +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isFetchAndStoreNative() +{ return false; } +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isFetchAndStoreWaitFree() +{ return false; } + +#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE + +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isFetchAndAddNative() +{ return false; } +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::isFetchAndAddWaitFree() +{ return false; } + +extern Q_CORE_EXPORT volatile char qt_atomic_lock; +Q_CORE_EXPORT void qt_atomic_yield(int *count); + +inline int qt_atomic_tasb(volatile char *ptr) +{ + register int ret; + asm volatile("tas.b @%2\n" + "movt %0" + : "=&r"(ret), "=m"(*ptr) + : "r"(ptr) + : "cc", "memory"); + return ret; +} + +// Reference counting + +inline bool QBasicAtomicInt::ref() +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + int originalValue = _q_value++; + qt_atomic_lock = 0; + return originalValue != -1; +} + +inline bool QBasicAtomicInt::deref() +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + int originalValue = _q_value--; + qt_atomic_lock = 0; + return originalValue != 1; +} + +// Test and set for integers + +inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue) +{ + bool returnValue = false; + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + if (_q_value == expectedValue) { + _q_value = newValue; + returnValue = true; + } + qt_atomic_lock = 0; + return returnValue; +} + +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) +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + int originalValue = _q_value; + _q_value = newValue; + qt_atomic_lock = 0; + return originalValue; +} + +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) +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + int originalValue = _q_value; + _q_value += valueToAdd; + qt_atomic_lock = 0; + 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 +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::testAndSetOrdered(T *expectedValue, T *newValue) +{ + bool returnValue = false; + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + if (_q_value == expectedValue) { + _q_value = newValue; + returnValue = true; + } + qt_atomic_lock = 0; + return returnValue; +} + +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::testAndSetRelaxed(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::testAndSetAcquire(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +template +Q_INLINE_TEMPLATE bool QBasicAtomicPointer::testAndSetRelease(T *expectedValue, T *newValue) +{ + return testAndSetOrdered(expectedValue, newValue); +} + +// Fetch and store for pointers + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndStoreOrdered(T *newValue) +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + T *originalValue = _q_value; + _q_value = newValue; + qt_atomic_lock = 0; + return originalValue; +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndStoreRelaxed(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndStoreAcquire(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndStoreRelease(T *newValue) +{ + return fetchAndStoreOrdered(newValue); +} + +// Fetch and add for pointers + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndAddOrdered(qptrdiff valueToAdd) +{ + int count = 0; + while (qt_atomic_tasb(&qt_atomic_lock) == 0) + qt_atomic_yield(&count); + T *originalValue = (_q_value); + _q_value += valueToAdd; + qt_atomic_lock = 0; + return originalValue; +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndAddRelaxed(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndAddAcquire(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +template +Q_INLINE_TEMPLATE T *QBasicAtomicPointer::fetchAndAddRelease(qptrdiff valueToAdd) +{ + return fetchAndAddOrdered(valueToAdd); +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QATOMIC_SH_H -- cgit v1.2.3