Rev 3 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
||
| 3 | * |
||
| 4 | * Coordinators: |
||
| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 7 | * |
||
| 8 | * Authors : |
||
| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 10 | * (see the web pages for full authors list) |
||
| 11 | * |
||
| 12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
| 13 | * |
||
| 14 | * http://www.sssup.it |
||
| 15 | * http://retis.sssup.it |
||
| 16 | * http://shark.sssup.it |
||
| 17 | */ |
||
| 18 | |||
| 19 | /** |
||
| 20 | ------------ |
||
| 38 | pj | 21 | CVS : $Id: event.c,v 1.2 2003-01-07 17:07:49 pj Exp $ |
| 2 | pj | 22 | |
| 23 | File: $File$ |
||
| 38 | pj | 24 | Revision: $Revision: 1.2 $ |
| 25 | Last update: $Date: 2003-01-07 17:07:49 $ |
||
| 2 | pj | 26 | ------------ |
| 27 | |||
| 28 | This file contains the functions to be used into events: |
||
| 29 | |||
| 30 | event_need_reschedule |
||
| 31 | event_resetepilogue |
||
| 32 | reschedule |
||
| 33 | |||
| 34 | **/ |
||
| 35 | |||
| 36 | /* |
||
| 37 | * Copyright (C) 2000 Paolo Gai |
||
| 38 | * |
||
| 39 | * This program is free software; you can redistribute it and/or modify |
||
| 40 | * it under the terms of the GNU General Public License as published by |
||
| 41 | * the Free Software Foundation; either version 2 of the License, or |
||
| 42 | * (at your option) any later version. |
||
| 43 | * |
||
| 44 | * This program is distributed in the hope that it will be useful, |
||
| 45 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 46 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 47 | * GNU General Public License for more details. |
||
| 48 | * |
||
| 49 | * You should have received a copy of the GNU General Public License |
||
| 50 | * along with this program; if not, write to the Free Software |
||
| 51 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
| 52 | * |
||
| 53 | */ |
||
| 54 | |||
| 55 | #include <stdarg.h> |
||
| 56 | #include <ll/ll.h> |
||
| 57 | #include <ll/stdlib.h> |
||
| 58 | #include <ll/stdio.h> |
||
| 59 | #include <ll/string.h> |
||
| 60 | #include <kernel/config.h> |
||
| 61 | #include <kernel/model.h> |
||
| 62 | #include <kernel/const.h> |
||
| 63 | #include <sys/types.h> |
||
| 64 | #include <kernel/types.h> |
||
| 65 | #include <kernel/descr.h> |
||
| 66 | #include <errno.h> |
||
| 67 | #include <kernel/var.h> |
||
| 68 | #include <kernel/func.h> |
||
| 69 | |||
| 70 | static void reschedule(void); |
||
| 71 | |||
| 72 | #ifdef __PERF_TEST2__ |
||
| 73 | static void perftest_reschedule(void); |
||
| 74 | #endif |
||
| 75 | |||
| 76 | /*+ called in an event to force the system to execute the scheduler at |
||
| 77 | the end of an event list. An event shall NEVER call directly |
||
| 78 | the sequence {scheduler(); kern_context_load(...);} !!! +*/ |
||
| 79 | void event_need_reschedule() |
||
| 80 | { |
||
| 81 | #ifdef __PERF_TEST2__ |
||
| 82 | event_setepilogue(perftest_reschedule); |
||
| 83 | #else |
||
| 84 | event_setepilogue(reschedule); |
||
| 85 | #endif |
||
| 86 | } |
||
| 87 | |||
| 88 | |||
| 89 | /* some static functions ...*/ |
||
| 90 | |||
| 91 | /*+ used to call the scheduler at the end of an event list +*/ |
||
| 92 | static void reschedule(void) |
||
| 93 | { |
||
| 94 | /* we have to change context ONLY IF the sys_end primitive was not called |
||
| 95 | before (e.g., in a exception raise called by a task_epilogue called by |
||
| 96 | the scheduler. */ |
||
| 38 | pj | 97 | if (!mustexit) { |
| 2 | pj | 98 | scheduler(); |
| 99 | ll_context_to(proc_table[exec_shadow].context); |
||
| 100 | } |
||
| 101 | } |
||
| 102 | |||
| 103 | |||
| 104 | /*+ called in the events to force the event handler to reset the event |
||
| 105 | epilogue; called in __kernel_init__ +*/ |
||
| 106 | void event_resetepilogue() |
||
| 107 | { |
||
| 108 | #ifdef __PERF_TEST2__ |
||
| 109 | extern TIME perftime_prol[10001]; |
||
| 110 | extern int perftime_count; |
||
| 111 | extern void perftest_epilogue(void); |
||
| 112 | |||
| 113 | if (perftime_count < 10000) { |
||
| 38 | pj | 114 | perftime_prol[perftime_count] = kern_gettime(NULL); |
| 2 | pj | 115 | } |
| 116 | event_setepilogue(perftest_epilogue); |
||
| 117 | #else |
||
| 118 | event_setepilogue(NULL); |
||
| 119 | #endif |
||
| 120 | |||
| 121 | } |
||
| 122 | |||
| 123 | #ifdef __PERF_TEST2__ |
||
| 124 | static void perftest_reschedule(void) |
||
| 125 | { |
||
| 126 | extern TIME perftime_epil[10001]; |
||
| 127 | extern int perftime_count; |
||
| 128 | reschedule(); |
||
| 129 | |||
| 130 | if (perftime_count < 10000){ |
||
| 38 | pj | 131 | perftime_epil[perftime_count] = kern_gettime(NULL); |
| 2 | pj | 132 | perftime_count++; |
| 133 | } |
||
| 134 | } |
||
| 135 | |||
| 136 | static void perftest_epilogue(void) |
||
| 137 | { |
||
| 138 | extern TIME perftime_epil[10001]; |
||
| 139 | extern int perftime_count; |
||
| 140 | |||
| 141 | |||
| 142 | if (perftime_count < 10000) { |
||
| 38 | pj | 143 | perftime_epil[perftime_count] = kern_gettime(NULL); |
| 2 | pj | 144 | perftime_count++; |
| 145 | } |
||
| 146 | } |
||
| 147 | #endif |
||
| 148 |