qlockfile.h - mozsearch

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// Copyright (C) 2013 David Faure <faure+bluesystems@kde.org>

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QLOCKFILE_H

#define QLOCKFILE_H

#include <QtCore/qstring.h>

#include <QtCore/qscopedpointer.h>

#include <chrono>

#include <memory>

QT_BEGIN_NAMESPACE

class QLockFilePrivate;

class Q_CORE_EXPORT QLockFile

public:

    explicit QLockFile(const QString &fileName);

    ~QLockFile();

    QString fileName() const;

    bool lock();

    QT_CORE_INLINE_SINCE(6, 10)

    bool tryLock(int timeout);

    void unlock();

    QT_CORE_INLINE_SINCE(6, 10)

    void setStaleLockTime(int);

    QT_CORE_INLINE_SINCE(6, 10)

    int staleLockTime() const;

    bool tryLock(std::chrono::milliseconds timeout = std::chrono::milliseconds::zero());

    void setStaleLockTime(std::chrono::milliseconds value);

    std::chrono::milliseconds staleLockTimeAsDuration() 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;

private:

    std::unique_ptr<QLockFilePrivate> d_ptr;

    Q_DECLARE_PRIVATE(QLockFile)

    Q_DISABLE_COPY(QLockFile)

};

#if QT_CORE_INLINE_IMPL_SINCE(6, 10)

bool QLockFile::tryLock(int timeout)

    return tryLock(std::chrono::milliseconds{timeout});

void QLockFile::setStaleLockTime(int staleLockTime)

    setStaleLockTime(std::chrono::milliseconds{staleLockTime});

int QLockFile::staleLockTime() const

    return int(staleLockTimeAsDuration().count());

#endif // QT_CORE_INLINE_IMPL_SINCE(6, 10)

QT_END_NAMESPACE

#endif // QLOCKFILE_H