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