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/*

 * Project: S.Ha.R.K.

 *

 * Coordinators:

 *   Giorgio Buttazzo    <giorgio@sssup.it>

 *   Paolo Gai           <pj@gandalf.sssup.it>

 *

 * Authors     :

 *   Paolo Gai           <pj@gandalf.sssup.it>

 *   (see the web pages for full authors list)

 *

 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)

 *

 * http://www.sssup.it

 * http://retis.sssup.it

 * http://shark.sssup.it

 */

/**

 ------------

 CVS :        $Id: valmodel.h,v 1.1 2004-07-05 14:17:18 pj Exp $

 File:        $File$

 Revision:    $Revision: 1.1 $

 Last update: $Date: 2004-07-05 14:17:18 $

 ------------

**/

/*

 * Copyright (C) 2001 Paolo Gai and Tomas Lenvall

 *

 * 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 program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 */

#ifndef __VALMODEL_H__

#define __VALMODEL_H__

#include <kernel/types.h>

#include <kernel/model.h>

/*

 * Registration functions

 *

 *

 * Note that the module that will handle the aperiodic tasks should also

 * support group creation. To support group creation you need a function

 * that have to be called for "accept" the task. The test application

 * will ensure you that the crunch_taskaccepted function will be called.

 *

 * The periodic tasks will be created as usual, with task_create.

 *

 * Please look at the template that you can use to create your own

 * Scheduling Module (it should be distributed with this file.

 */

/*

 * This function will be called into the __kernel_register_modules__

 * function in the middle of the registration of the Modules.

 * You can do what you want here.

 *

 * In particular, you should register some scheduling Modules

 * that will be capable to handle these two task models:

 * - HARD_TASK_MODEL: periodic tasks with wcet and period != 0

 * - VALUE_TASK_MODEL: aperiodic tasks with wcet, reldline, and values

 */

void crunch_register_models(struct multiboot_info *mb);

/*

 * This function will be used by the test application to accept value tasks.

 * It returns 1 if the task p is accepted, 0 if not.

 */

int crunch_taskaccepted(PID p);

/*

 * This function just returns the accumulated value by the scheduling

 * modules.

 */

int crunch_getvalue();

/* -----------------------------------------------------------------------

   VALUE_TASK_MODEL: elastic hard Tasks

   ----------------------------------------------------------------------- */

/*

 * this is the Value Task Model that has been used in the

 * Lab assignments of the Advanced Real-Time Course in

 * the Malardalens University, Sweden

 *

 * This is an aperiodic task with deadline and wcet.

 * if the task run to completion the Module gains some value points

 * if it cannot be run it will loose some (penalty) points

 */

// a random unused number

#define VALUE_PCLASS 0x6900

typedef struct {

  TASK_MODEL t;

  TIME wcet;        // the worst case execution time of the task

  TIME dline;       // relative deadline

  DWORD value;      // the value gained if the task runs to completion

  DWORD penalty;    // the penalty gained if the task does not finish

} VALUE_TASK_MODEL;

#define value_task_default_model(m)                             \

                        task_default_model((m).t,VALUE_PCLASS), \

                        (m).wcet       = 0,                            \

                        (m).dline      = 0,                            \

                        (m).value      = 0,                            \

                        (m).penalty    = 0

#define value_task_def_level(m,l)      task_def_level((m).t,l)

#define value_task_def_arg(m,a)        task_def_arg((m).t,a)

#define value_task_def_stack(m,s)      task_def_stack((m).t,s)

#define value_task_def_stackaddr(m,s)  task_def_stackaddr((m).t,s)

#define value_task_def_group(m,g)      task_def_group((m).t,g)

#define value_task_def_usemath(m)      task_def_usemath((m).t)

#define value_task_def_system(m)       task_def_system((m).t)

#define value_task_def_nokill(m)       task_def_nokill((m).t)

#define value_task_def_ctrl_jet(m)     task_def_ctrl_jet((m).t)

#define value_task_def_wcet(m,w)       (m).wcet = (w)

#define value_task_def_dline(m,d)      (m).dline = (d)

#define value_task_def_value(m,v)      (m).value = (v)

#define value_task_def_penalty(m,p)    (m).penalty = (p)

#define value_task_def_joinable(m)     task_def_joinable((m).t)

#define value_task_def_unjoinable(m)   task_def_unjoinable((m).t)

#endif