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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 QBASICATOMIC_H
+#define QBASICATOMIC_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+class Q_CORE_EXPORT QBasicAtomicInt
+{
+public:
+#ifdef QT_ARCH_PARISC
+ int _q_lock[4];
+#endif
+#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+ union { // needed for Q_BASIC_ATOMIC_INITIALIZER
+ volatile long _q_value;
+ };
+#else
+ volatile int _q_value;
+#endif
+
+ // Non-atomic API
+ inline bool operator==(int value) const
+ {
+ return _q_value == value;
+ }
+
+ inline bool operator!=(int value) const
+ {
+ return _q_value != value;
+ }
+
+ inline bool operator!() const
+ {
+ return _q_value == 0;
+ }
+
+ inline operator int() const
+ {
+ return _q_value;
+ }
+
+ inline QBasicAtomicInt &operator=(int value)
+ {
+#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;
+ return *this;
+ }
+
+ // Atomic API, implemented in qatomic_XXX.h
+
+ 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);
+};
+
+template <typename T>
+class QBasicAtomicPointer
+{
+public:
+#ifdef QT_ARCH_PARISC
+ int _q_lock[4];
+#endif
+#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+ union {
+ T * volatile _q_value;
+# if !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
+ qint64
+# else
+ long
+# endif
+ volatile _q_value_integral;
+ };
+#else
+ T * volatile _q_value;
+#endif
+
+ // Non-atomic API
+ inline bool operator==(T *value) const
+ {
+ return _q_value == value;
+ }
+
+ inline bool operator!=(T *value) const
+ {
+ return !operator==(value);
+ }
+
+ inline bool operator!() const
+ {
+ return operator==(0);
+ }
+
+ inline operator T *() const
+ {
+ return _q_value;
+ }
+
+ inline T *operator->() const
+ {
+ return _q_value;
+ }
+
+ inline QBasicAtomicPointer<T> &operator=(T *value)
+ {
+#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;
+ return *this;
+ }
+
+ // Atomic API, implemented in qatomic_XXX.h
+
+ 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);
+};
+
+#ifdef QT_ARCH_PARISC
+# define Q_BASIC_ATOMIC_INITIALIZER(a) {{-1,-1,-1,-1},(a)}
+#elif defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+# define Q_BASIC_ATOMIC_INITIALIZER(a) { {(a)} }
+#else
+# define Q_BASIC_ATOMIC_INITIALIZER(a) { (a) }
+#endif
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#if defined(QT_MOC) || defined(QT_BUILD_QMAKE) || defined(QT_RCC) || defined(QT_UIC) || defined(QT_BOOTSTRAPPED)
+# include <QtCore/qatomic_bootstrap.h>
+#else
+# include <QtCore/qatomic_arch.h>
+#endif
+
+#endif // QBASIC_ATOMIC