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1627 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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 *   Giacomo Guidi       <giacomo@gandalf.sssup.ti>
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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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 * 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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#include "kernel/kern.h"
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TASK elastic_test(void *arg) {
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  int nbr = (int)arg;
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  while(1) {
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    cprintf("%d.", nbr);
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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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  ELASTIC_TASK_MODEL e1, e2, e3;
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  PID el_pid1, el_pid2, el_pid3;
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  cprintf("Elastic Task Demo (U=0.5 in initfile.c)\n");
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  cprintf("Creating elastic task with Tmin = 100000, C = 20000, E = 0\n");
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  elastic_task_default_model(e1);
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  elastic_task_def_period(e1, 100000, 100000);
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  elastic_task_def_wcet(e1, 20000);
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  elastic_task_def_param(e2, 0, PERIOD_SCALING);
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  elastic_task_def_arg(e1, (void *)1);
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  el_pid1 = task_create("Elastic1",elastic_test,&e1,NULL);
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  if (el_pid1 == NIL) {
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    cprintf("ERROR: Cannot create Elastic1\n");
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    sys_end();
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  }
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  task_activate(el_pid1);
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  cprintf("\nCreating elastic task with Tmin = 200000, C = 80000, E = 2\n");
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  elastic_task_default_model(e2);
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  elastic_task_def_period(e2, 200000, 400000);
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  elastic_task_def_wcet(e2, 80000);
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  elastic_task_def_param(e2, 2, PERIOD_SCALING);
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  elastic_task_def_arg(e2, (void *)2);
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  el_pid2 = task_create("Elastic2",elastic_test,&e2,NULL);
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  if (el_pid2 == NIL) {
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    cprintf("ERROR: Cannot create Elastic2\n");
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    sys_end();
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  }
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  task_activate(el_pid2);
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  cprintf("\nCreating elastic task with Tmin = 400000, C = 40000, E = 1\n");
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  elastic_task_default_model(e3);
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  elastic_task_def_period(e3, 400000, 2000000);
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  elastic_task_def_wcet(e3, 40000);
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  elastic_task_def_param(e3, 1, PERIOD_SCALING);
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  elastic_task_def_arg(e3, (void *)3);
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  el_pid3 = task_create("Elastic3",elastic_test,&e3,NULL);
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  if (el_pid3 == NIL) {
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    cprintf("ERROR: Cannot create Elastic3\n");
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    sys_end();
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  }
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  task_activate(el_pid3);
1628 giacomo 91 
 
1629 anton 92 
 
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  /* Exit at time t = 5.0 */
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  struct timespec t;
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  t.tv_sec = 5;
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  t.tv_nsec = 0;
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  kern_event_post(&t, (void(*)(void*))sys_end, NULL);
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  while(1);
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  return 0;
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}