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| 1655 | giacomo | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * (see the web pages for full authors list) |
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| 11 | * |
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| 12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 13 | * |
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| 14 | * http://www.sssup.it |
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| 15 | * http://retis.sssup.it |
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| 16 | * http://shark.sssup.it |
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| 17 | */ |
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| 18 | |||
| 19 | /** |
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| 20 | ------------ |
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| 21 | CVS : $Id: jetctrl.c,v 1.1.1.1 2004-05-24 18:03:39 giacomo Exp $ |
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| 22 | |||
| 23 | File: $File$ |
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| 24 | Revision: $Revision: 1.1.1.1 $ |
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| 25 | Last update: $Date: 2004-05-24 18:03:39 $ |
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| 26 | ------------ |
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| 27 | **/ |
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| 28 | |||
| 29 | /* |
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| 30 | * Copyright (C) 2000 Paolo Gai |
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| 31 | * |
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| 32 | * This program is free software; you can redistribute it and/or modify |
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| 33 | * it under the terms of the GNU General Public License as published by |
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| 34 | * the Free Software Foundation; either version 2 of the License, or |
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| 35 | * (at your option) any later version. |
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| 36 | * |
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| 37 | * This program is distributed in the hope that it will be useful, |
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| 38 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 39 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 40 | * GNU General Public License for more details. |
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| 41 | * |
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| 42 | * You should have received a copy of the GNU General Public License |
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| 43 | * along with this program; if not, write to the Free Software |
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| 44 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 45 | * |
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| 46 | */ |
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| 47 | |||
| 48 | /* |
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| 49 | * this file is directly derived from the demos/jumpball/jetctrl.c . |
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| 50 | * I just added this controls to check when the system will become overloaded |
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| 51 | */ |
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| 52 | |||
| 53 | #define WCET_JETDUMMY 200 |
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| 54 | #define PERIOD_JETDUMMY 100000 |
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| 55 | #define DUMMY_PID 1 |
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| 56 | |||
| 57 | #define JET_DUMMY_WIDTH (CMD_WIDTH-370) |
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| 58 | #define JET_DUMMY_HEIGHT (CMD_HEIGHT-40) |
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| 59 | |||
| 60 | /* the point (x, y) is the top left corner */ |
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| 61 | #define JET_DUMMY_X (TRACK_X1+360) |
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| 62 | #define JET_DUMMY_Y (TRACK_Y2+32) |
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| 63 | |||
| 64 | // JetControl |
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| 65 | |||
| 66 | #include "semaphore.h" |
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| 67 | #include "include/const.h" |
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| 68 | #include "kernel/func.h" |
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| 69 | #include "drivers/glib.h" |
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| 70 | |||
| 71 | extern sem_t grx_mutex; |
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| 72 | |||
| 73 | /* useful colors... */ |
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| 74 | int white; |
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| 75 | int black; |
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| 76 | extern int red; |
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| 77 | extern int lightgray; |
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| 78 | |||
| 79 | TASK jetdummy_task(void *arg) |
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| 80 | { |
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| 81 | TIME now_dummy, last_dummy, diff_dummy, slice; |
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| 82 | struct timespec now, last, diff; |
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| 83 | int x = 0; |
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| 84 | int height; |
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| 85 | |||
| 86 | NULL_TIMESPEC(&last); |
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| 87 | last_dummy = 0; |
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| 88 | for (;;) { |
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| 89 | task_nopreempt(); |
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| 90 | jet_getstat(DUMMY_PID, NULL, NULL, NULL, &now_dummy); |
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| 91 | sys_gettime(&now); |
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| 92 | task_preempt(); |
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| 93 | |||
| 94 | SUBTIMESPEC(&now, &last, &diff); |
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| 95 | slice = diff.tv_sec * 1000000 + diff.tv_nsec/1000; |
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| 96 | diff_dummy = now_dummy - last_dummy; |
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| 97 | |||
| 98 | height = (int)(JET_DUMMY_HEIGHT*((float)diff_dummy)/((float)slice)); |
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| 99 | |||
| 100 | TIMESPEC_ASSIGN(&last, &now); |
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| 101 | last_dummy = now_dummy; |
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| 102 | |||
| 103 | sem_wait(&grx_mutex); |
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| 104 | grx_line(JET_DUMMY_X+x,JET_DUMMY_Y, |
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| 105 | JET_DUMMY_X+x,JET_DUMMY_Y+height ,black); |
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| 106 | grx_line(JET_DUMMY_X+x,JET_DUMMY_Y+height, |
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| 107 | JET_DUMMY_X+x,JET_DUMMY_Y+JET_DUMMY_HEIGHT,white); |
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| 108 | grx_line(JET_DUMMY_X+(x+1)%JET_DUMMY_WIDTH,JET_DUMMY_Y, |
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| 109 | JET_DUMMY_X+(x+1)%JET_DUMMY_WIDTH,JET_DUMMY_Y+JET_DUMMY_HEIGHT,255); |
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| 110 | sem_post(&grx_mutex); |
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| 111 | |||
| 112 | x = (x+1)%JET_DUMMY_WIDTH; |
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| 113 | |||
| 114 | task_endcycle(); |
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| 115 | } |
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| 116 | } |
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| 117 | |||
| 118 | void init_jetcontrol(void) |
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| 119 | { |
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| 120 | SOFT_TASK_MODEL m4; |
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| 121 | |||
| 122 | PID p4; |
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| 123 | |||
| 124 | /* useful colors ... */ |
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| 125 | white = WHITE; |
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| 126 | black = BLACK; |
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| 127 | |||
| 128 | /* scenario */ |
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| 129 | sem_wait(&grx_mutex); |
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| 130 | grx_text("System load", |
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| 131 | JET_DUMMY_X+8, JET_DUMMY_Y-10, lightgray, black); |
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| 132 | grx_rect(JET_DUMMY_X-1, JET_DUMMY_Y-1, |
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| 133 | JET_DUMMY_X+JET_DUMMY_WIDTH, JET_DUMMY_Y+JET_DUMMY_HEIGHT+1, lightgray); |
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| 134 | |||
| 135 | grx_text("100%", JET_DUMMY_X-40, JET_DUMMY_Y, lightgray, black); |
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| 136 | grx_text(" 0%", JET_DUMMY_X-40, JET_DUMMY_Y+JET_DUMMY_HEIGHT-8, lightgray, black); |
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| 137 | |||
| 138 | grx_line(JET_DUMMY_X-1, JET_DUMMY_Y, JET_DUMMY_X-5, JET_DUMMY_Y, lightgray); |
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| 139 | 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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| 140 | sem_post(&grx_mutex); |
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| 141 | |||
| 142 | /* jetdummy task */ |
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| 143 | soft_task_default_model(m4); |
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| 144 | soft_task_def_period(m4, PERIOD_JETDUMMY); |
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| 145 | soft_task_def_met(m4, WCET_JETDUMMY); |
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| 146 | soft_task_def_usemath(m4); |
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| 147 | p4 = task_create("jdmy", jetdummy_task, &m4, NULL); |
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| 148 | if (p4 == -1) { |
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| 149 | grx_close(); |
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| 150 | perror("Could not create task <jetdummy>"); |
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| 151 | sys_end(); |
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| 152 | } |
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| 153 | task_activate(p4); |
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| 154 | } |
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| 155 |