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| 2 | 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 | ------------ |
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| 21 | CVS : $Id: event.c,v 1.1.1.1 2002-03-29 14:12:51 pj 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: 2002-03-29 14:12:51 $ |
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| 26 | ------------ |
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| 27 | |||
| 28 | This file contains the functions to be used into events: |
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| 29 | |||
| 30 | event_need_reschedule |
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| 31 | event_resetepilogue |
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| 32 | reschedule |
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| 33 | |||
| 34 | **/ |
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| 35 | |||
| 36 | /* |
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| 37 | * Copyright (C) 2000 Paolo Gai |
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| 38 | * |
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| 39 | * This program is free software; you can redistribute it and/or modify |
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| 40 | * it under the terms of the GNU General Public License as published by |
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| 41 | * the Free Software Foundation; either version 2 of the License, or |
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| 42 | * (at your option) any later version. |
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| 43 | * |
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| 44 | * This program is distributed in the hope that it will be useful, |
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| 45 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 46 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 47 | * GNU General Public License for more details. |
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| 48 | * |
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| 49 | * You should have received a copy of the GNU General Public License |
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| 50 | * along with this program; if not, write to the Free Software |
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| 51 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 52 | * |
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| 53 | */ |
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| 54 | |||
| 55 | #include <stdarg.h> |
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| 56 | #include <ll/ll.h> |
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| 57 | #include <ll/stdlib.h> |
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| 58 | #include <ll/stdio.h> |
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| 59 | #include <ll/string.h> |
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| 60 | #include <kernel/config.h> |
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| 61 | #include <kernel/model.h> |
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| 62 | #include <kernel/const.h> |
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| 63 | #include <sys/types.h> |
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| 64 | #include <kernel/types.h> |
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| 65 | #include <kernel/descr.h> |
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| 66 | #include <errno.h> |
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| 67 | #include <kernel/var.h> |
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| 68 | #include <kernel/func.h> |
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| 69 | |||
| 70 | static void reschedule(void); |
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| 71 | |||
| 72 | #ifdef __PERF_TEST2__ |
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| 73 | static void perftest_reschedule(void); |
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| 74 | #endif |
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| 75 | |||
| 76 | /*+ called in an event to force the system to execute the scheduler at |
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| 77 | the end of an event list. An event shall NEVER call directly |
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| 78 | the sequence {scheduler(); kern_context_load(...);} !!! +*/ |
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| 79 | void event_need_reschedule() |
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| 80 | { |
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| 81 | #ifdef __PERF_TEST2__ |
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| 82 | event_setepilogue(perftest_reschedule); |
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| 83 | #else |
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| 84 | event_setepilogue(reschedule); |
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| 85 | #endif |
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| 86 | } |
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| 87 | |||
| 88 | |||
| 89 | /* some static functions ...*/ |
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| 90 | |||
| 91 | /*+ used to call the scheduler at the end of an event list +*/ |
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| 92 | static void reschedule(void) |
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| 93 | { |
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| 94 | /* we have to change context ONLY IF the sys_end primitive was not called |
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| 95 | before (e.g., in a exception raise called by a task_epilogue called by |
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| 96 | the scheduler. */ |
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| 97 | if (mustexit == 0) { |
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| 98 | scheduler(); |
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| 99 | ll_context_to(proc_table[exec_shadow].context); |
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| 100 | } |
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| 101 | } |
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| 102 | |||
| 103 | |||
| 104 | /*+ called in the events to force the event handler to reset the event |
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| 105 | epilogue; called in __kernel_init__ +*/ |
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| 106 | void event_resetepilogue() |
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| 107 | { |
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| 108 | #ifdef __PERF_TEST2__ |
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| 109 | extern TIME perftime_prol[10001]; |
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| 110 | extern int perftime_count; |
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| 111 | extern void perftest_epilogue(void); |
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| 112 | |||
| 113 | if (perftime_count < 10000) { |
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| 114 | perftime_prol[perftime_count] = ll_gettime(TIME_EXACT, NULL); |
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| 115 | } |
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| 116 | event_setepilogue(perftest_epilogue); |
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| 117 | #else |
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| 118 | event_setepilogue(NULL); |
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| 119 | #endif |
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| 120 | |||
| 121 | } |
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| 122 | |||
| 123 | #ifdef __PERF_TEST2__ |
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| 124 | static void perftest_reschedule(void) |
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| 125 | { |
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| 126 | extern TIME perftime_epil[10001]; |
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| 127 | extern int perftime_count; |
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| 128 | reschedule(); |
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| 129 | |||
| 130 | if (perftime_count < 10000){ |
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| 131 | perftime_epil[perftime_count] = ll_gettime(TIME_EXACT, NULL); |
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| 132 | perftime_count++; |
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| 133 | } |
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| 134 | } |
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| 135 | |||
| 136 | static void perftest_epilogue(void) |
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| 137 | { |
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| 138 | extern TIME perftime_epil[10001]; |
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| 139 | extern int perftime_count; |
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| 140 | |||
| 141 | |||
| 142 | if (perftime_count < 10000) { |
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| 143 | perftime_epil[perftime_count] = ll_gettime(TIME_EXACT, NULL); |
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| 144 | perftime_count++; |
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| 145 | } |
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| 146 | } |
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| 147 | #endif |
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| 148 |