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1085 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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 ------------
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 CVS :        $Id: jetctrl.c,v 1.1.1.1 2002-09-02 09:37:42 pj Exp $
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 File:        $File$
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 Revision:    $Revision: 1.1.1.1 $
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 Last update: $Date: 2002-09-02 09:37:42 $
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 ------------
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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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 */
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/*
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 * this file is directly derived from the demos/jumpball/jetctrl.c .
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 * I just added this controls to check when the system will become overloaded
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 */
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#define WCET_JETDUMMY      200
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#define PERIOD_JETDUMMY 100000
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#define DUMMY_PID    1
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#define JET_DUMMY_WIDTH    (CMD_WIDTH-370)
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#define JET_DUMMY_HEIGHT   (CMD_HEIGHT-40)
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/* the point (x, y) is the top left corner */
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#define JET_DUMMY_X        (TRACK_X1+360)
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#define JET_DUMMY_Y        (TRACK_Y2+32)
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// JetControl
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#include "semaphore.h"
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#include "include/const.h"
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#include "kernel/func.h"
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#include "drivers/glib.h"
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extern sem_t grx_mutex;
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/* useful colors... */
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int white;
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int black;
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extern int red;
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extern int lightgray;
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TASK jetdummy_task(void *arg)
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{
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  TIME   now_dummy, last_dummy, diff_dummy, slice;
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  struct timespec now, last, diff;
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  int x = 0;
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  int height;
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  NULL_TIMESPEC(&last);
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  last_dummy = 0;
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  for (;;) {
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    task_nopreempt();
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    jet_getstat(DUMMY_PID, NULL, NULL, NULL, &now_dummy);
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    sys_gettime(&now);
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    task_preempt();
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    SUBTIMESPEC(&now, &last, &diff);
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    slice = diff.tv_sec * 1000000 + diff.tv_nsec/1000;
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    diff_dummy = now_dummy - last_dummy;
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    height = (int)(JET_DUMMY_HEIGHT*((float)diff_dummy)/((float)slice));
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    TIMESPEC_ASSIGN(&last, &now);
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    last_dummy = now_dummy;
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    sem_wait(&grx_mutex);
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    grx_line(JET_DUMMY_X+x,JET_DUMMY_Y,
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             JET_DUMMY_X+x,JET_DUMMY_Y+height          ,black);
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    grx_line(JET_DUMMY_X+x,JET_DUMMY_Y+height,
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             JET_DUMMY_X+x,JET_DUMMY_Y+JET_DUMMY_HEIGHT,white);
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    grx_line(JET_DUMMY_X+(x+1)%JET_DUMMY_WIDTH,JET_DUMMY_Y,
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             JET_DUMMY_X+(x+1)%JET_DUMMY_WIDTH,JET_DUMMY_Y+JET_DUMMY_HEIGHT,255);
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    sem_post(&grx_mutex);
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    x = (x+1)%JET_DUMMY_WIDTH;
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    task_endcycle();
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  }
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}
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void init_jetcontrol(void)
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{
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    SOFT_TASK_MODEL m4;
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    PID p4;
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    /* useful colors ... */
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    white = WHITE;
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    black = BLACK;
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    /* scenario */
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    sem_wait(&grx_mutex);
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    grx_text("System load",
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             JET_DUMMY_X+8, JET_DUMMY_Y-10, lightgray, black);
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    grx_rect(JET_DUMMY_X-1,               JET_DUMMY_Y-1,
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             JET_DUMMY_X+JET_DUMMY_WIDTH, JET_DUMMY_Y+JET_DUMMY_HEIGHT+1, lightgray);
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    grx_text("100%", JET_DUMMY_X-40, JET_DUMMY_Y, lightgray, black);
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    grx_text("  0%", JET_DUMMY_X-40, JET_DUMMY_Y+JET_DUMMY_HEIGHT-8, lightgray, black);
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    grx_line(JET_DUMMY_X-1, JET_DUMMY_Y, JET_DUMMY_X-5, JET_DUMMY_Y, lightgray);
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    grx_line(JET_DUMMY_X-1, JET_DUMMY_Y+JET_DUMMY_HEIGHT, JET_DUMMY_X-5, JET_DUMMY_Y+JET_DUMMY_HEIGHT, lightgray);
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    sem_post(&grx_mutex);
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    /* jetdummy task */
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    soft_task_default_model(m4);
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    soft_task_def_period(m4, PERIOD_JETDUMMY);
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    soft_task_def_met(m4, WCET_JETDUMMY);
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    soft_task_def_usemath(m4);
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    p4 = task_create("jdmy", jetdummy_task, &m4, NULL);
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    if (p4 == -1) {
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        grx_close();
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        perror("Could not create task <jetdummy>");
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        sys_end();
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    }
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    task_activate(p4);
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}
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