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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module 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 http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QTHREADSTORAGE_H
#define QTHREADSTORAGE_H
#include <QtCore/qglobal.h>
#ifndef QT_NO_THREAD
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class Q_CORE_EXPORT QThreadStorageData
{
public:
explicit QThreadStorageData(void (*func)(void *));
~QThreadStorageData();
void** get() const;
void** set(void* p);
static void finish(void**);
int id;
};
#if !defined(QT_MOC_CPP)
// MOC_SKIP_BEGIN
// pointer specialization
template <typename T>
inline
T *&qThreadStorage_localData(QThreadStorageData &d, T **)
{
void **v = d.get();
if (!v) v = d.set(0);
return *(reinterpret_cast<T**>(v));
}
template <typename T>
inline
T *qThreadStorage_localData_const(const QThreadStorageData &d, T **)
{
void **v = d.get();
return v ? *(reinterpret_cast<T**>(v)) : 0;
}
template <typename T>
inline
void qThreadStorage_setLocalData(QThreadStorageData &d, T **t)
{ (void) d.set(*t); }
#ifndef QT_NO_PARTIAL_TEMPLATE_SPECIALIZATION
// value-based specialization
template <typename T>
inline
T &qThreadStorage_localData(QThreadStorageData &d, T *)
{
void **v = d.get();
if (!v) v = d.set(new T());
return *(reinterpret_cast<T*>(*v));
}
template <typename T>
inline
T qThreadStorage_localData_const(const QThreadStorageData &d, T *)
{
void **v = d.get();
return v ? *(reinterpret_cast<T*>(*v)) : T();
}
template <typename T>
inline
void qThreadStorage_setLocalData(QThreadStorageData &d, T *t)
{ (void) d.set(new T(*t)); }
#endif // QT_NO_PARTIAL_TEMPLATE_SPECIALIZATION
// MOC_SKIP_END
#endif
template <class T>
class QThreadStorage
{
private:
QThreadStorageData d;
Q_DISABLE_COPY(QThreadStorage)
static inline void deleteData(void *x)
{ delete static_cast<T>(x); }
public:
inline QThreadStorage() : d(deleteData) { }
inline ~QThreadStorage() { }
inline bool hasLocalData() const
{ return d.get() != 0; }
inline T& localData()
{ return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); }
inline T localData() const
{ return qThreadStorage_localData_const(d, reinterpret_cast<T*>(0)); }
inline void setLocalData(T t)
{ qThreadStorage_setLocalData(d, &t); }
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QT_NO_THREAD
#endif // QTHREADSTORAGE_H
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