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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 Giorgio Buttazzo, Paolo Gai, Massimiliano Giorgi

 *

 * 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: aster7.c,v 1.7 2006-07-03 12:57:05 tullio Exp $

 this is a part of the classic Hartik demo Aster.

 it is based on test 10(A), and test the PS with RM.

 The JetControl is served by a dedicated Polling Server, too.

 There are APER_MAX tasks sleeping, and when an asteroide task finish

 the current activation, it activate also an aperiodic task chosen

 randomly (if the task chosen is already active, the task_activate do

 nothing!)

*/

#include "kernel/kern.h"

#include "edf/edf/edf.h"

#include <drivers/shark_linuxc26.h>

#include <drivers/shark_input26.h>

#include <drivers/shark_keyb26.h>

int num_aster = 0;

#define ASTER_LIM       60

#define DISPLAY_MAX     15

#define ASTER_MAX       70

#define STAT_Y           9

#define APER_MAX         8

/* Pentium 133 / Celeron 366 */

#define PER_WCET     25000 /* 7800 */

#define APER_WCET     5500 /* 1400 */

#define CLOCK_WCET     500 /* 200 */

#define ASTER_WCET     500 /* 200 */

#define APER_REP     2200

PID aper_table[APER_MAX];

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--;

    return 0;

}

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);

        task_endcycle();

        puts_xy(i,y,WHITE," ");

        i++;

      }

    }

}

TASK aster()

{

    PID p;

    HARD_TASK_MODEL m;

    int r;

    int x; // adaptive bandwidth...

    hard_task_default_model(m);

    hard_task_def_wcet(m,PER_WCET);

    hard_task_def_ctrl_jet(m);

    x = 200;

    srand(7);

    while (1) {

        if (num_aster < ASTER_MAX) {

            r = (rand() % 200);

            hard_task_def_arg(m,(void *)((rand() % 7)+1));

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

            p = task_create("aaa",asteroide,&m,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,"U=%12u",EDF_usedbandwidth(1));

        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,"U=%12u",EDF_usedbandwidth(1));

        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) continue;

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

       jet_gettable(p, &last[0], 5);

       kern_cli();

       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 fine(KEY_EVT *e)

{

  exit(0);

}

int main(int argc, char **argv)

{

    PID p1,p2,p3; //,p4,p5,p6;

    HARD_TASK_MODEL m;

    NRT_TASK_MODEL m_nrt;

    SOFT_TASK_MODEL m_aper;

    int i;

    KEY_EVT emerg;

    clear();

    cprintf("Press Ctrl-C to end the demo...");

    emerg.ascii = 'c';

    emerg.scan = KEY_C;

    emerg.flag = CNTL_BIT;

    emerg.status = KEY_PRESSED;

    keyb_hook(emerg,fine,FALSE);

          emerg.flag = CNTR_BIT;

    emerg.status = KEY_PRESSED;

    keyb_hook(emerg,fine,FALSE);

    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);

    nrt_task_default_model(m_nrt);

    nrt_task_def_group(m_nrt,1);

    nrt_task_def_ctrl_jet(m_nrt);

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

    if (p1 == -1) {

        sys_shutdown_message("test7.c(main): Could not create task <aster> ...");

        exit(1);

    }

    hard_task_def_mit(m,500000);

    hard_task_def_wcet(m,CLOCK_WCET);

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

    if (p2 == -1) {

        sys_shutdown_message("test7.c(main): Could not create task <Clock> ...");

        exit(1);

    }

    soft_task_default_model(m_aper);

    soft_task_def_ctrl_jet(m_aper);

    soft_task_def_level(m_aper, 2);

    soft_task_def_group(m_aper,1);

    soft_task_def_aperiodic(m_aper);

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

    if (p3 == -1) {

        sys_shutdown_message("test7.c(main): Could not create task <JetControl> ...");

        exit(1);

    }

    soft_task_def_wcet(m_aper,APER_WCET);

    soft_task_def_ctrl_jet(m_aper);

    soft_task_def_aperiodic(m_aper);

    for (i=0; i<APER_MAX; i++) {

      soft_task_def_level(m_aper, i/4 + 4);

      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) {

        sys_shutdown_message("test7.c(main): Could not create task <aper> ...");

        exit(1);

      }

    }

    group_activate(1);

    return 0;

}