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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QATOMIC_UNIX_H
#define QATOMIC_UNIX_H
#include <QtCore/qgenericatomic.h>
QT_BEGIN_NAMESPACE
#if 0
// silence syncqt warnings
QT_END_NAMESPACE
#pragma qt_sync_stop_processing
#endif
#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE
#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE
#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE
#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE
#define Q_ATOMIC_INT32_IS_SUPPORTED
#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE
#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE
#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE
template<> struct QAtomicIntegerTraits<int> { enum { IsInteger = 1 }; };
// No definition, needs specialization
template <typename T> struct QAtomicOps;
template <>
struct QAtomicOps<int> : QGenericAtomicOps<QAtomicOps<int> >
{
typedef int Type;
static inline Q_DECL_CONSTEXPR bool isTestAndSetNative() Q_DECL_NOTHROW { return false; }
static inline Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() Q_DECL_NOTHROW { return false; }
Q_CORE_EXPORT static bool testAndSetRelaxed(int &_q_value, int expectedValue, int newValue) Q_DECL_NOTHROW;
};
template <>
struct QAtomicOps<void *> : QGenericAtomicOps<QAtomicOps<void *> >
{
typedef void *Type;
static inline Q_DECL_CONSTEXPR bool isTestAndSetNative() Q_DECL_NOTHROW { return false; }
static inline Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() Q_DECL_NOTHROW { return false; }
Q_CORE_EXPORT static bool testAndSetRelaxed(void *&_q_value, void *expectedValue, void *newValue) Q_DECL_NOTHROW;
};
template <typename T>
struct QAtomicOps<T *> : QGenericAtomicOps<QAtomicOps<T *> >
{
typedef T *Type;
// helper to strip cv qualifiers
static inline void *nocv(const T *p) { return const_cast<void *>(static_cast<const volatile void *>(p)); }
static inline Q_DECL_CONSTEXPR bool isTestAndSetNative() Q_DECL_NOTHROW { return false; }
static inline Q_DECL_CONSTEXPR bool isTestAndSetWaitFree() Q_DECL_NOTHROW { return false; }
static inline bool testAndSetRelaxed(T *&_q_value, T *expectedValue, T *newValue) Q_DECL_NOTHROW
{
// forward to the void* specialization
void *voidp = nocv(_q_value);
bool returnValue = QAtomicOps<void *>::testAndSetRelaxed(voidp, nocv(expectedValue), nocv(newValue));
_q_value = reinterpret_cast<T *>(voidp);
return returnValue;
}
};
QT_END_NAMESPACE
#endif // QATOMIC_UNIX_H
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