periodicity.h

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#ifndef PERIODICITY_CLASS
#define PERIODICITY_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : periodicity                                                       *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1997-$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 "scheduling_dll.h"

#include <mechanisms/time_stamp.h>


class SCHEDULING_CLASS_STYLE periodicity
{
public:
  int entry_interval;

  time_stamp start_time;

  int expiration_interval;

//hmmm: and hence is useless, since each activation is seemingly instantaneous
//to the scheduler.  what the heck!
// how is the expiration interval computed??
// is it the start time plus the interval?  meaning that whenever an item
// gets scheduled, the expiration countdown timer is reset to zero?
// the expiration timer should be reset whenever the item enters the schedule,
// because right now scheduling is pretty much allowed to continue as long
// as the item is behaving nicely...  is that okay???  seems like the
// expiration thing is a sham.
// but then again, it will make us consider timing issues.  is 42 seconds
// really long enough for any _full_ transmission?  that's what the current
// limit on packets being sent is, and isn't that the same as the overall time
// here?

  periodicity(int entry = 0, const time_stamp &start = time_stamp(),
          int expire = 0)
  : entry_interval(entry), start_time(start), expiration_interval(expire) {}

  istring per_text_form() const;
};

#endif

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