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// Copyright 2015-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#ifndef MUMBLE_MUMBLE_LOCKFILE_H_
#define MUMBLE_MUMBLE_LOCKFILE_H_
#include <QtCore/QtGlobal>
#ifdef Q_OS_WIN
# include "win.h"
#endif
#include <QtCore/QString>
/// UserLockFile implements an atomic lock file
/// that can be used as a mutex between different
/// processes run by the same user.
class UserLockFile {
#if defined(Q_OS_WIN)
HANDLE m_handle;
#endif
QString m_path;
public:
/// Constructs a LockFile at path.
/// The path should be somewhere
/// owned by the current user, such
/// as inside the home directory of
/// the user. This is to avoid clashing
/// with other lock files.
UserLockFile(const QString &path);
/// Destroys the LockFile, and ensures
/// that it is released.
~UserLockFile();
/// Returns the path that the lock file
/// exists at.
QString path() const;
/// Acquires the lock file.
bool acquire();
/// Releases the lock file.
void release();
};
#endif
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