qlockfile_p.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_P_H

++ #define QLOCKFILE_P_H

++

++ //

++ //  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.

++ //

++

++ #include <QtCore/private/qglobal_p.h>

++ #include <QtCore/qlockfile.h>

++ #include <QtCore/qfile.h>

++

++ #include <optional>

++

++ QT_BEGIN_NAMESPACE

++

++ class QLockFilePrivate

++ {

++ public:

++     struct LockFileInfo

++     {

++         qint64 pid;

++         QString appname;

++         QString hostname;

++         QByteArray hostid;

++         QByteArray bootid;

++

++         QT_DEFINE_TAG_STRUCT(Current);

++         LockFileInfo() = default;

++         LockFileInfo(Current);

++         QByteArray asFileContents() const;

++     };

++

++     explicit QLockFilePrivate(const QString &fn);

++     ~QLockFilePrivate();

++

++     QLockFile::LockError tryLock_sys(const LockFileInfo &current);

++     bool removeStaleLock();

++     // Returns \c true if the lock belongs to dead PID, or is old.

++     // The attempt to delete it will tell us if it was really stale or not, though.

++     bool isApparentlyStale(const LockFileInfo &current) const;

++

++     // used in dbusmenu

++     Q_CORE_EXPORT static QString processNameByPid(qint64 pid);

++     static bool isProcessRunning(qint64 pid, const QString &appname);

++

++     QString fileName;

++

++     static std::optional<LockFileInfo> getLockInfo_helper(const QString &fileName);

++     static int openNewFileDescriptor(const QString &fileName);

++

++ #ifdef Q_OS_WIN

++     Qt::HANDLE fileHandle = Qt::HANDLE(-1); // INVALID_HANDLE_VALUE

++ #else

++     int fileHandle = -1;

++     int dirHandle = -1;     // the directory where the file is located

++ #endif

++

++     std::chrono::milliseconds staleLockTime = std::chrono::seconds{30};

++     QLockFile::LockError lockError = QLockFile::NoError;

++     bool isLocked = false;

++

++     // used in tst_QLockFile:

++     static auto getLockFileHandle(QLockFile *f)

++     {

++         return f->d_func()->fileHandle;

++     }

++ };

++

++ QT_END_NAMESPACE

++

++ #endif /* QLOCKFILE_P_H */