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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSystems 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef QSYSTEMREADWRITELOCK_P_H
#define QSYSTEMREADWRITELOCK_P_H
#include <qpublishsubscribeglobal.h>
#include <QString>
QT_BEGIN_NAMESPACE
class QSystemReadWriteLockPrivate;
class QSystemReadWriteLock
{
public:
enum AccessMode{
Create,
Open
};
enum SystemReadWriteLockError {
NoError,
PermissionDenied,
KeyError, //TODO:remove this enum
NotFound,
LockError, //TODO: remove this enum
OutOfResources,
FailedToInitialize, //TODO: remove this enum
UnknownError
};
explicit QSystemReadWriteLock(const QString &key, AccessMode mode = Open);
~QSystemReadWriteLock();
bool lockForRead();
bool lockForWrite();
void unlock();
SystemReadWriteLockError error() const;
QString errorString() const;
QString key() const;
private:
QSystemReadWriteLockPrivate *d;
};
QT_END_NAMESPACE
#endif // QSYSTEMREADWRITELOCK_P_H
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