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1624 giacomo 1
/*
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 * Project: S.Ha.R.K.
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 *
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 * Coordinators:
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 *   Giorgio Buttazzo    <giorgio@sssup.it>
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *
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 * Authors     :
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *   Massimiliano Giorgi <massy@gandalf.sssup.it>
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 *   Luca Abeni          <luca@gandalf.sssup.it>
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 *   (see the web pages for full authors list)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://shark.sssup.it
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 */
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/**
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 ------------
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 CVS :        $Id: edfstar.h,v 1.1.1.1 2004-05-24 17:54:51 giacomo Exp $
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 File:        $File$
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 Revision:    $Revision: 1.1.1.1 $
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 Last update: $Date: 2004-05-24 17:54:51 $
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 ------------
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 Title:
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   EDFSTAR
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 Task Models Accepted:
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   HARD_TASK_MODEL - Hard Tasks (only Periodic)
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     wcet field and mit field must be != 0. They are used to set the wcet
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       and period of the tasks.
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     periodicity field can be only PERIODIC
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     drel field is ignored
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 Guest Models Accepted:
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   JOB_TASK_MODEL - a single guest task activation
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     Identified by an absolute deadline and a period.
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     period field is ignored
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 Description:
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   This module schedule his tasks following the classic EDF
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   scheme. This module is derived from the EDFACT Scheduling Module.
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   This module can not stay alone: when it have to schedule a task, it
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   simply inserts it into another master module using a
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   BUDGET_TASK_MODEL.
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   No Task guarantee is performed at all.
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   The tasks scheduled are only periodic.
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   All the task are put in a queue and the scheduling is based on the
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   deadline value.
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   If a task miss a deadline a counter is incremented.
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   If a task exausts the wcet a counter is incremented
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   No ZOMBIE support!!!!!!
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 Exceptions raised:
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   XUNVALID_GUEST XUNVALID_TASK
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     some primitives are not implemented:
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     task_sleep, task_delay, guest_endcycle, guest_sleep, guest_delay
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   XACTIVATION
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     If a task is actiated through task_activate or guest_activate more than
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     one time
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 Restrictions & special features:
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   - This level doesn't manage the main task.
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   - Functions to return and reset the nact, wcet and dline miss
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     counters are provided
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**/
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/*
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 * Copyright (C) 2001 Paolo Gai
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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#ifndef __EDFSTAR_H__
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#define __EDFSTAR_H__
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#include <ll/ll.h>
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#include <kernel/config.h>
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#include <sys/types.h>
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#include <kernel/types.h>
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/* flags... */
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#define EDFSTAR_ENABLE_GUARANTEE      1  /* Task Guarantee enabled */
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#define EDFSTAR_ENABLE_ALL            1
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#define EDFSTAR_FAILED_GUARANTEE      8  /* used in the module, unsettabl
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                                         in EDF_register_level... */
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#define EDFSTAR_LEVELNAME        "EDFSTAR base"
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#define EDFSTAR_LEVEL_CODE       166
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#define EDFSTAR_LEVEL_VERSION    1
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/* Registration function:
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   int budget      The budget used by this module (see CBSSTAR.h)
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   int master      The master module used by EDFSTAR
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*/
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LEVEL EDFSTAR_register_level(int budget, int master);
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/* returns respectively the number of dline, wcet or nact; -1 if error */
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int EDFSTAR_get_dline_miss(PID p);
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int EDFSTAR_get_wcet_miss(PID p);
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int EDFSTAR_get_nact(PID p);
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/* resets respectively the number of dline, wcet miss; -1 if error */
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int EDFSTAR_reset_dline_miss(PID p);
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int EDFSTAR_reset_wcet_miss(PID p);
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#endif
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