/**************************************************************************** ** ** 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 QSYSTEMSEMAPHORE_H #define QSYSTEMSEMAPHORE_H #include <QtCore/qstring.h> #include <QtCore/qscopedpointer.h> QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Core) #ifndef QT_NO_SYSTEMSEMAPHORE class QSystemSemaphorePrivate; class Q_CORE_EXPORT QSystemSemaphore { public: enum AccessMode { Open, Create }; enum SystemSemaphoreError { NoError, PermissionDenied, KeyError, AlreadyExists, NotFound, OutOfResources, UnknownError }; QSystemSemaphore(const QString &key, int initialValue = 0, AccessMode mode = Open); ~QSystemSemaphore(); void setKey(const QString &key, int initialValue = 0, AccessMode mode = Open); QString key() const; bool acquire(); bool release(int n = 1); SystemSemaphoreError error() const; QString errorString() const; private: Q_DISABLE_COPY(QSystemSemaphore) QScopedPointer<QSystemSemaphorePrivate> d; }; #endif // QT_NO_SYSTEMSEMAPHORE QT_END_NAMESPACE QT_END_HEADER #endif // QSYSTEMSEMAPHORE_H