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/****************************************************************************
**
** Copyright (C) 2013 David Faure <faure+bluesystems@kde.org>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
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**
**
******************************************************************************/
#ifndef QLOCKFILE_H
#define QLOCKFILE_H
#include <QtCore/qstring.h>
#include <QtCore/qscopedpointer.h>
#if __has_include(<chrono>)
# include <chrono>
#endif
QT_BEGIN_NAMESPACE
class QLockFilePrivate;
class Q_CORE_EXPORT QLockFile
{
public:
QLockFile(const QString &fileName);
~QLockFile();
QString fileName() const;
bool lock();
bool tryLock(int timeout = 0);
void unlock();
void setStaleLockTime(int);
int staleLockTime() const;
#if __has_include(<chrono>)
bool tryLock(std::chrono::milliseconds timeout) { return tryLock(int(timeout.count())); }
void setStaleLockTime(std::chrono::milliseconds value) { setStaleLockTime(int(value.count())); }
std::chrono::milliseconds staleLockTimeAsDuration() const
{
return std::chrono::milliseconds(staleLockTime());
}
#endif
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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