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158 lines
4.1 KiB
158 lines
4.1 KiB
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QTHREADSTORAGE_H
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#define QTHREADSTORAGE_H
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#include <QtCore/qglobal.h>
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#ifndef QT_NO_THREAD
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Core)
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class Q_CORE_EXPORT QThreadStorageData
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{
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public:
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explicit QThreadStorageData(void (*func)(void *));
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~QThreadStorageData();
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void** get() const;
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void** set(void* p);
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static void finish(void**);
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int id;
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};
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#if !defined(QT_MOC_CPP)
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// MOC_SKIP_BEGIN
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// pointer specialization
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template <typename T>
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inline
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T *&qThreadStorage_localData(QThreadStorageData &d, T **)
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{
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void **v = d.get();
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if (!v) v = d.set(0);
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return *(reinterpret_cast<T**>(v));
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}
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template <typename T>
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inline
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T *qThreadStorage_localData_const(const QThreadStorageData &d, T **)
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{
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void **v = d.get();
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return v ? *(reinterpret_cast<T**>(v)) : 0;
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}
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template <typename T>
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inline
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void qThreadStorage_setLocalData(QThreadStorageData &d, T **t)
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{ (void) d.set(*t); }
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#ifndef QT_NO_PARTIAL_TEMPLATE_SPECIALIZATION
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// value-based specialization
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template <typename T>
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inline
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T &qThreadStorage_localData(QThreadStorageData &d, T *)
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{
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void **v = d.get();
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if (!v) v = d.set(new T());
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return *(reinterpret_cast<T*>(*v));
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}
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template <typename T>
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inline
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T qThreadStorage_localData_const(const QThreadStorageData &d, T *)
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{
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void **v = d.get();
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return v ? *(reinterpret_cast<T*>(*v)) : T();
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}
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template <typename T>
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inline
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void qThreadStorage_setLocalData(QThreadStorageData &d, T *t)
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{ (void) d.set(new T(*t)); }
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#endif // QT_NO_PARTIAL_TEMPLATE_SPECIALIZATION
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// MOC_SKIP_END
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#endif
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template <class T>
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class QThreadStorage
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{
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private:
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QThreadStorageData d;
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Q_DISABLE_COPY(QThreadStorage)
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static inline void deleteData(void *x)
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{ delete static_cast<T>(x); }
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public:
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inline QThreadStorage() : d(deleteData) { }
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inline ~QThreadStorage() { }
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inline bool hasLocalData() const
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{ return d.get() != 0; }
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inline T& localData()
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{ return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); }
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inline T localData() const
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{ return qThreadStorage_localData_const(d, reinterpret_cast<T*>(0)); }
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inline void setLocalData(T t)
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{ qThreadStorage_setLocalData(d, &t); }
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QT_NO_THREAD
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#endif // QTHREADSTORAGE_H
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