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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

 */

/*

 * Copyright (C) 2000 Paolo Gai

 *

 * 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

 *

 *

 * CVS :        $Id: aster4.c,v 1.1 2002-11-11 08:22:45 pj Exp $

 Test Number 13 (D):

 this is a part of the classic Hartik demo Aster, and it is based on aster 3.

 The demo creates:

 - a set of TBS tasks assigned to 2 TBS servers initialized with different bandwidth.

 - a set of periodic tasks, just to make noise (function asteroide)

 - a set of CBS tasks that are created to fill the available free

   bandwidth (function soft_aster)

 - a few service task (the one that creates the CBS tasks (aster), a clock,

   JET info visualization

 - a set of never ending "system tasks" that simulate a device driver

   task that will end only at shutdown (function aper_asteroid)

 - a keyboard task that will execute an hook to terminate the system

*/

/*

 * Copyright (C) 2000 Paolo Gai

 *

 * 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

 *

 */

#include "kernel/kern.h"

#include "modules/edf.h"

#include "modules/cbs.h"

#include "drivers/keyb.h"

int num_aster = 0;

#define ASTER_LIM       60

#define DISPLAY_MAX     15

#define ASTER_MAX       70

#define STAT_Y           9

#define PER_MAX          5

#define APER_MAX         8

// These numbers works on a Pentium 133 */

#define PER_WCET     25000

#define APER_WCET    53000

#define CLOCK_WCET    1000

#define ASTER_WCET    1000

#define SOFT_MET      6300

#define APER_REP     22000

PID aper_table[APER_MAX];

int shutting_down = 0;

TASK asteroide(void)

{

  int i;

  int y = rand() % 7 + 1;

  int load1,j;

  char s[2];

  s[0] = '*'; s[1] = 0;

  for (;;) {

    i = 1;

    while (i < ASTER_LIM) {

      load1 = 10000; //8000 + rand()%2000;

      for (j=0; j<load1; j++) {

        s[0] = '*' + rand() % 100;

        puts_xy(i,y,rand()%15+1,s);

      }

      task_activate(aper_table[rand()%APER_MAX]);

      task_endcycle();

      puts_xy(i,y,WHITE," ");

      i++;

    }

  }

  //num_aster--;

}

TASK aper_asteroid(void *a)

{

  int i;

  int y = rand() % 7 + 1;

  int load1,j;

  int c;

  char s[2];

  c = (int)a;

  s[0] = '*'; s[1] = 0;

  for (;;) {

    i = 1;

    while (i < ASTER_LIM) {

      load1 = APER_REP; //8000 + rand()%2000;

      for (j=0; j<load1; j++) {

        s[0] = '*' + rand() % 100;

        puts_xy(i,y,rand()%15+1,s);

      }

      s[0] = c;

      puts_xy(i,y,rand()%15+1,s);

      if (shutting_down) {

        cprintf("Ending System Task %d\n",exec_shadow);

        return 0;

      }

      task_endcycle();

      puts_xy(i,y,WHITE," ");

      i++;

    }

  }

}

TASK soft_aster(void)

{

  int i;

  int y = rand() % 7 + 1;

  int load1,j;

  char s[2];

  s[0] = '*'; s[1] = 0;

  i = 1;

  while (i < ASTER_LIM) {

    load1 = 1000 + rand()%9000;

    for (j=0; j<load1; j++) {

      s[0] = '*' + rand() % 100;

      puts_xy(i,y,rand()%15+1,s);

    }

    s[0] = 1;

    puts_xy(i,y,rand()%15+1,s);

    task_activate(aper_table[rand()%APER_MAX]);

    task_endcycle();

    puts_xy(i,y,WHITE," ");

    i++;

  }

  num_aster--;

  return 0;

}

TASK aster()

{

  PID p;

  HARD_TASK_MODEL m;

  SOFT_TASK_MODEL m_soft;

  int r;

  int x; // adaptive bandwidth...

  srand(7);

  /* create a set of periodic tasks, just to make noise */

  hard_task_default_model(m);

  hard_task_def_wcet(m,PER_WCET);

  hard_task_def_ctrl_jet(m);

  for (x=0; x<PER_MAX; x++) {

    r = (rand() % 200);

    hard_task_def_mit(m, (64+r)*1000);

    p = task_create("per",asteroide,&m,NULL);

    if (p!=-1) task_activate(p);

  }

  soft_task_default_model(m_soft);

  soft_task_def_met(m_soft,SOFT_MET);

  soft_task_def_ctrl_jet(m_soft);

  x = 64;

  while (1) {

    if (num_aster < ASTER_MAX) {

      r = (rand() % 200);

      soft_task_def_period(m_soft, (x+r)*1000);

      p = task_create("aaa",soft_aster,&m_soft,NULL);

      if (p == -1)

        {

          if (x < 500 && errno != ENO_AVAIL_TASK)  x += 1;

          printf_xy(62,3,WHITE,"adapt=%3u err=%d",

                    iq_query_first(&freedesc),errno);

        }

      else {

        num_aster++;

        printf_xy(62,3,WHITE,"adapt=%3u           ",x);//,errno);

        task_activate(p);

        x /= 2;

        if (x<50) x = 50;

      }

    }

    task_endcycle();

  }

}

TASK clock()

{

  int s = 0, m = 0;

  while(1) {

    printf_xy(62,1,WHITE,"%2d:%2d ast=%d",m,s, num_aster);

    printf_xy(62,2,WHITE,"Uedf=%12u",EDF_usedbandwidth(0));

    printf_xy(62,4,WHITE,"Ucbs=%12u",CBS_usedbandwidth(4));

    task_endcycle();

    if (++s > 59) {

      s = 0;

      m++;

    }

    printf_xy(62,1,WHITE,"%2d:%2d ast=%d",m,s, num_aster);

    printf_xy(62,2,WHITE,"Uedf=%12u",EDF_usedbandwidth(0));

    printf_xy(62,4,WHITE,"Ucbs=%12u",CBS_usedbandwidth(4));

    task_endcycle();

  }

}

/* we consider the first ASTER_MAX + 2 tasks from the PID 2

   and plot on the screen the elapsed times... */

TASK jetcontrol()

{

  int i;  /* a counter */

  TIME sum, max, curr, last[5];

  int nact;

  int j; /* the elements set by jet_gettable */

  PID p;

  kern_cli();

  printf_xy(0,STAT_Y,WHITE,"PID ³ Mean T.³ Max T. ³ N.A. ³ Curr.   ³ Last1 ³ Last2 ³ Last3 ³ Last4 ³ Last5");

  kern_sti();

  for (;;) {

    for (i=0,p=0; i<DISPLAY_MAX+5 && p<MAX_PROC; p++) {

      if (jet_getstat(p, &sum, &max, &nact, &curr) == -1 ||

          (proc_table[p].pclass & 0xFF00) == HARD_PCLASS) continue;

      for (j=0; j<5; j++) last[j] = 0;

      jet_gettable(p, &last[0], 5);

      kern_cli();

      if (proc_table[p].task_level == 4)

        printf_xy(0,STAT_Y+i+1,WHITE,"%-3d ³ %-6d ³ %-6d ³ %-4d ³ %-7d ³ %-5d ³ %-5d ³ %-5d ³ %-5d ³ %-5d",

                  p, (int)sum/(nact==0 ? 1 : nact), (int)max, nact, (int)CBS_get_nact(4,p), (int)last[0], (int)last[1], (int)last[2], (int)last[3], (int)last[4]);

      else

        printf_xy(0,STAT_Y+i+1,WHITE,"%-3d ³ %-6d ³ %-6d ³ %-4d ³ %-7d ³ %-5d ³ %-5d ³ %-5d ³ %-5d ³ %-5d",

                  p, (int)sum/(nact==0 ? 1 : nact), (int)max, nact, (int)curr, (int)last[0], (int)last[1], (int)last[2], (int)last[3], (int)last[4]);

      kern_sti();

      i++;

    }

  }

}

void endfun(KEY_EVT *k)

{

  sys_end();

}

void exiting(void *arg)

{

  cprintf("System shut down...\n");

  shutting_down = 1;

}

int main(int argc, char **argv)

{

  KEY_EVT k;

  PID p1,p2,p3;

  HARD_TASK_MODEL m;

  SOFT_TASK_MODEL m_aper;

  SOFT_TASK_MODEL m_soft;

  int i;

  k.flag = 0;

  k.scan = KEY_ENT;

  k.ascii = 13;

  keyb_hook(k, endfun);

  clear();

  cprintf("Press ENTER to end the demo...");

  sys_atrunlevel(exiting, NULL, RUNLEVEL_SHUTDOWN);

  hard_task_default_model(m);

  hard_task_def_wcet(m,ASTER_WCET);

  hard_task_def_mit(m,10000);

  hard_task_def_group(m,1);

  hard_task_def_ctrl_jet(m);

  soft_task_default_model(m_soft);

  soft_task_def_met(m_soft,1000);

  soft_task_def_period(m_soft,100000);

  soft_task_def_group(m_soft,1);

  soft_task_def_ctrl_jet(m_soft);

  soft_task_def_aperiodic(m_soft);

  p1 = task_create("Aster",aster,&m,NULL);

  if (p1 == -1) {

    perror("aster4.c(main): Could not create task <aster> ...");

    sys_end();

  }

  hard_task_def_mit(m,500000);

  hard_task_def_wcet(m,CLOCK_WCET);

  p2 = task_create("Clock",clock,&m,NULL);

  if (p2 == -1) {

    perror("aster4.c(main): Could not create task <Clock> ...");

    sys_end();

  }

  p3 = task_create("JetControl",jetcontrol,&m_soft,NULL);

  if (p3 == -1) {

    perror("aster4.c(main): Could not create task <JetControl> ...");

    sys_end();

  }

  soft_task_default_model(m_aper);

  soft_task_def_wcet(m_aper,APER_WCET);

  soft_task_def_ctrl_jet(m_aper);

  soft_task_def_system(m_aper);

  soft_task_def_aperiodic(m_aper);

  for (i=0; i<APER_MAX; i++) {

    soft_task_def_level(m_aper, i/4 + 2);

    soft_task_def_arg(m_aper, (void *)(i/4 ? 'Û' : '±'));

    aper_table[i] = task_create("aper",aper_asteroid,&m_aper,NULL);

    if (aper_table[i] == -1) {

      perror("aster4.c(main): Could not create task <aper> ...");

      sys_end();

    }

  }

  group_activate(1);

  return 0;

}