singleton_application.h

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#ifndef SINGLETON_APPLICATION_CLASS
#define SINGLETON_APPLICATION_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : singleton_application                                             *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 2006-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/


#include "opsysdll.h"

#include <basis/istring.h>
#include <basis/object_base.h>

// forward.
class rendezvous;

class OPSYSTEM_CLASS_STYLE singleton_application
{
public:
  singleton_application(const istring &application_name,
          const istring &user_name = istring::empty_string());

  virtual ~singleton_application();

  IMPLEMENT_CLASS_NAME("singleton_application");

  bool allow_this_instance();

  bool already_running() { return !allow_this_instance(); }

private:
  rendezvous *_app_lock;  
  bool _got_lock;  
};

#endif

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