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Diffstat (limited to 'src/corelib/kernel/qsharedmemory.h')
-rw-r--r-- | src/corelib/kernel/qsharedmemory.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/corelib/kernel/qsharedmemory.h b/src/corelib/kernel/qsharedmemory.h new file mode 100644 index 0000000..481a815 --- /dev/null +++ b/src/corelib/kernel/qsharedmemory.h @@ -0,0 +1,119 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 qt-sales@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 + |