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| 1120 | pj | 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 | * Copyright (C) 2000 Paolo Gai |
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| 21 | * |
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| 22 | * This program is free software; you can redistribute it and/or modify |
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| 23 | * it under the terms of the GNU General Public License as published by |
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| 24 | * the Free Software Foundation; either version 2 of the License, or |
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| 25 | * (at your option) any later version. |
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| 26 | * |
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| 27 | * This program is distributed in the hope that it will be useful, |
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| 28 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 30 | * GNU General Public License for more details. |
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| 31 | * |
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| 32 | * You should have received a copy of the GNU General Public License |
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| 33 | * along with this program; if not, write to the Free Software |
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| 34 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 35 | * |
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| 36 | * |
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| 37 | * CVS : $Id: preempt.c,v 1.1 2002-11-11 08:22:46 pj Exp $ |
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| 38 | |||
| 39 | CBS test with preemption disabling |
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| 40 | |||
| 41 | */ |
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| 42 | |||
| 43 | #include "kernel/kern.h" |
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| 44 | |||
| 45 | void *periodic(void *arg) |
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| 46 | { |
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| 47 | int i; |
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| 48 | int y = (int)arg; |
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| 49 | |||
| 50 | for (i = 19; i < 60; i++) { |
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| 51 | puts_xy(i,y,7,"*"); |
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| 52 | |||
| 53 | task_endcycle(); |
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| 54 | } |
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| 55 | |||
| 56 | return 0; |
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| 57 | } |
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| 58 | |||
| 59 | void *blocker(void *arg) |
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| 60 | { |
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| 61 | struct timespec t; |
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| 62 | |||
| 63 | task_nopreempt(); |
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| 64 | cprintf("Blocker: Task nopreempt\n"); |
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| 65 | |||
| 66 | do { |
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| 67 | sys_gettime(&t); |
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| 68 | } while (t.tv_sec < 5); |
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| 69 | |||
| 70 | cprintf("Blocker: Task preempt\n"); |
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| 71 | task_preempt(); |
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| 72 | |||
| 73 | cprintf("Blocker: end\n"); |
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| 74 | |||
| 75 | return 0; |
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| 76 | } |
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| 77 | |||
| 78 | |||
| 79 | |||
| 80 | int main(int argc, char **argv) |
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| 81 | { |
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| 82 | struct timespec t; |
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| 83 | NRT_TASK_MODEL m; |
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| 84 | SOFT_TASK_MODEL m_aper; |
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| 85 | PID p; |
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| 86 | |||
| 87 | clear(); |
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| 88 | cprintf("Preemption Test.\n"); |
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| 89 | cprintf("Start time: two periodic tasks and a blocker are created and activated.\n"); |
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| 90 | cprintf("2 seconds : blocker calls task_nopreempt.\n"); |
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| 91 | cprintf("5 seconds : task_preempt is called.\n"); |
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| 92 | cprintf(" The blocked task exec its pending activations.\n"); |
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| 93 | cprintf("10 seconds: the test stops.\n"); |
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| 94 | puts_xy(1,20,7,"save task:"); |
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| 95 | puts_xy(1,21,7,"skip task:"); |
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| 96 | |||
| 97 | nrt_task_default_model(m); |
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| 98 | |||
| 99 | soft_task_default_model(m_aper); |
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| 100 | soft_task_def_met(m_aper,10000); |
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| 101 | soft_task_def_period(m_aper,200000); |
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| 102 | soft_task_def_group(m_aper,1); |
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| 103 | soft_task_def_arg(m_aper, (void *)20); |
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| 104 | soft_task_def_periodic(m_aper); |
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| 105 | |||
| 106 | p = task_create("save", periodic, &m_aper, NULL); |
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| 107 | if (p == NIL) |
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| 108 | { |
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| 109 | perror("Can't create save task...\n"); |
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| 110 | sys_end(); |
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| 111 | } |
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| 112 | |||
| 113 | soft_task_def_skip_arrivals(m_aper); |
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| 114 | soft_task_def_arg(m_aper, (void *)21); |
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| 115 | |||
| 116 | p = task_create("skip", periodic, &m_aper, NULL); |
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| 117 | if (p == NIL) |
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| 118 | { |
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| 119 | perror("Can't create skip task...\n"); |
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| 120 | sys_end(); |
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| 121 | } |
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| 122 | |||
| 123 | p = task_create("blocker", blocker, &m, NULL); |
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| 124 | if (p == NIL) |
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| 125 | { |
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| 126 | perror("Can't create blocker task...\n"); |
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| 127 | sys_end(); |
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| 128 | } |
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| 129 | |||
| 130 | cprintf("main : save & skip tasks activated.\n"); |
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| 131 | group_activate(1); |
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| 132 | |||
| 133 | do { |
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| 134 | sys_gettime(&t); |
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| 135 | } while (t.tv_sec < 2); |
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| 136 | |||
| 137 | cprintf("main : blocker activated.\n"); |
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| 138 | task_activate(p); |
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| 139 | |||
| 140 | do { |
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| 141 | sys_gettime(&t); |
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| 142 | } while (t.tv_sec < 10); |
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| 143 | |||
| 144 | cprintf("main : End!!!\n"); |
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| 145 | |||
| 146 | return 0; |
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| 147 | } |