/**************************************************************************** ** ** 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 QSHAREDMEMORY_H #define QSHAREDMEMORY_H #include <QtCore/qobject.h> QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Core) #ifndef QT_NO_SHAREDMEMORY class QSharedMemoryPrivate; class Q_CORE_EXPORT QSharedMemory : public QObject { Q_OBJECT Q_DECLARE_PRIVATE(QSharedMemory) public: enum AccessMode { ReadOnly, ReadWrite }; enum SharedMemoryError { NoError, PermissionDenied, InvalidSize, KeyError, AlreadyExists, NotFound, LockError, OutOfResources, UnknownError }; QSharedMemory(QObject *parent = 0); QSharedMemory(const QString &key, QObject *parent = 0); ~QSharedMemory(); void setKey(const QString &key); QString key() const; bool create(int size, AccessMode mode = ReadWrite); int size() const; bool attach(AccessMode mode = ReadWrite); bool isAttached() const; bool detach(); void *data(); const void* constData() const; const void *data() const; #ifndef QT_NO_SYSTEMSEMAPHORE bool lock(); bool unlock(); #endif SharedMemoryError error() const; QString errorString() const; private: Q_DISABLE_COPY(QSharedMemory) }; #endif // QT_NO_SHAREDMEMORY QT_END_NAMESPACE QT_END_HEADER #endif // QSHAREDMEMORY_H