| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QSYSTEMSEMAPHORE_H |
| #define QSYSTEMSEMAPHORE_H |
| |
| #include <QtCore/qstring.h> |
| #include <QtCore/qscopedpointer.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| #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 |
| |
| #endif // QSYSTEMSEMAPHORE_H |
| |