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/****************************************************************************
**
** Copyright (C) 2013 David Faure <faure+bluesystems@kde.org>
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QLOCKFILE_H
#define QLOCKFILE_H
#include <QtCore/qstring.h>
#include <QtCore/qscopedpointer.h>
QT_BEGIN_NAMESPACE
class QLockFilePrivate;
class Q_CORE_EXPORT QLockFile
{
public:
QLockFile(const QString &fileName);
~QLockFile();
bool lock();
bool tryLock(int timeout = 0);
void unlock();
void setStaleLockTime(int);
int staleLockTime() const;
bool isLocked() const;
bool getLockInfo(qint64 *pid, QString *hostname, QString *appname) const;
bool removeStaleLockFile();
enum LockError {
NoError = 0,
LockFailedError = 1,
PermissionError = 2,
UnknownError = 3
};
LockError error() const;
protected:
QScopedPointer<QLockFilePrivate> d_ptr;
private:
Q_DECLARE_PRIVATE(QLockFile)
Q_DISABLE_COPY(QLockFile)
};
QT_END_NAMESPACE
#endif // QLOCKFILE_H
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