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1099 pj 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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 *   (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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 * Copyright (C) 2000 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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 *
1123 pj 37
 * CVS :        $Id: aster1.c,v 1.2 2003-01-07 17:10:15 pj Exp $
1099 pj 38
 
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 this is a reduced verion of the classic Hartik demo Aster.
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 It uses:
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 - EDF module
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   . periodic tasks
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 - an high number of task executing concurrently
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 The demo ends after 6 seconds.
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*/
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/*
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   Well, this is only a stupid demo which intend to show many
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   HARTIK+ capabilities; the application is structured in the followig
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   way: there is an ASTER task wich randomly creates some ASTEROID tasks
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   which are displayed into the first window; each task is HARD/PERIODIC
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   and auto-kills itself when it reaches the window end!
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   Finally a CLOCK task is implemented to test system clock.
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   Please note that usually the HARTIK+ application is made up of a task
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   group which interacts among them, while the main() function, which
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   became a task itself when the kernel is activated, is suspended until
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   the system is ready to terminate; the MAIN task can also be used to make
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   other background activities, but it should not be killed; when the
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   application terminates, the control is passed to MAIN which kills
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   everybody, shut down the system and can handle other operations using
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   the services available with the previou operating system (I.E. the DOS).
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   If you need to manage sudden abort/exception you should install your own
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   exception handler and raise it through the exc_raise() primitive to
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   make the system abort safely!
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   Remember that the exit functions posted through sys_atexit() will be
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   executed in both cases, to allow clean system shutdown.
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*/
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#include "kernel/kern.h"
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int num_aster = 0;
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#define ASTER_LIM       67
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#define ASTER_MAX       90
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TASK asteroide(void)
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{
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  int i = 1;
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  int y = rand() % 20 + 1;
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  while (i < ASTER_LIM) {
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    puts_xy(i,y,WHITE,"*");
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    task_endcycle();
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    puts_xy(i,y,WHITE," ");
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    i++;
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  }
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  num_aster--;
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  return 0;
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}
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DWORD taskCreated = 0;
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TASK aster(void)
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{
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  PID p;
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  HARD_TASK_MODEL m;
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  int r;
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  hard_task_default_model(m);
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  hard_task_def_wcet(m,500);
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  srand(7);
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  while (1) {
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    if (num_aster < ASTER_MAX) {
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      r = (rand() % 50) - 25;
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      hard_task_def_arg(m,(void *)((rand() % 7)+1));
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      hard_task_def_mit(m, (50+r)*1000);
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      p = task_create("aaa",asteroide,&m,NULL);
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      taskCreated++;
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      task_activate(p);
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      num_aster++;
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    }
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    task_endcycle();
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  }
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}
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TASK clock()
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{
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  int s = 0, m = 0;
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  while(1) {
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    printf_xy(70,1,WHITE,"%2d : %2d",m,s);
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    task_endcycle();
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    if (++s > 59) {
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      s = 0;
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      m++;
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    }
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    printf_xy(70,1,WHITE,"%2d : %2d",m,s);
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    task_endcycle();
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  }
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}
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int main(int argc, char **argv)
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{
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  PID p1,p2;
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  HARD_TASK_MODEL m;
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  struct timespec t;
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  clear();
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  hard_task_default_model(m);
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  hard_task_def_mit(m,10000);
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  hard_task_def_wcet(m,2000);
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  hard_task_def_group(m,1);
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  p1 = task_create("Aster",aster,&m,NULL);
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  if (p1 == -1) {
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    perror("Aster.C(main): Could not create task <aster> ...");
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    sys_end();
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  }
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  hard_task_def_mit(m,500000);
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  p2 = task_create("Clock",clock,&m,NULL);
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  if (p2 == -1) {
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    perror("Aster.C(main): Could not create task <Clock> ...");
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    sys_end();
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  }
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  group_activate(1);
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  do {
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    sys_gettime(&t);
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  } while (t.tv_sec < 6);
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  sys_end();
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  return 0;
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}
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