SingleInstanceInsurer.hpp

/****************************************************************************
**
** Copyright (c) 2012 Troels Nilsson.
** All rights reserved.
** Contact: nilsson.troels@gmail.com
**
** This file is part of the CarSpot project.
** 
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 
** Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
** 
** Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
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** used to endorse or promote products derived from this software without
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****************************************************************************/
#ifndef SINGLEINSTANCEINSURER_HPP
#define SINGLEINSTANCEINSURER_HPP

#include <QFile>

// This class will insure that only one CarSpot process runs at a time by holding a lock on a file
// If any other process is running it will kill it with SIGINT
class SingleInstanceInsurer
{
public:
    SingleInstanceInsurer();

private:
    void obtainLock();

    QFile m_lockFile;

    static const QLatin1String Filename;
};

#endif // SINGLEINSTANCEINSURER_HPP