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2 | pj | 1 | /* |
2 | * Project: HARTIK (HA-rd R-eal TI-me K-ernel) |
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3 | * |
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4 | * Coordinators: Giorgio Buttazzo <giorgio@sssup.it> |
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5 | * Gerardo Lamastra <gerardo@sssup.it> |
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6 | * |
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7 | * Authors : Paolo Gai <pj@hartik.sssup.it> |
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8 | * (see authors.txt for full list of hartik's authors) |
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9 | * |
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10 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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11 | * |
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12 | * http://www.sssup.it |
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13 | * http://retis.sssup.it |
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14 | * http://hartik.sssup.it |
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15 | */ |
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16 | |||
17 | /** |
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18 | ------------ |
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19 | CVS : $Id: const.h,v 1.1.1.1 2002-03-29 14:12:51 pj Exp $ |
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20 | |||
21 | File: $File$ |
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22 | Revision: $Revision: 1.1.1.1 $ |
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23 | Last update: $Date: 2002-03-29 14:12:51 $ |
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24 | ------------ |
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25 | |||
26 | System constants: |
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27 | |||
28 | - Customizable constants |
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29 | |||
30 | - Non-Customizable constants |
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31 | |||
32 | IMPORTANT!!! |
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33 | This file is used also at assembly level,to have unique |
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34 | defintion and avoid mess! |
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35 | |||
36 | **/ |
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37 | |||
38 | /* |
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39 | * Copyright (C) 2000 Paolo Gai |
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40 | * |
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41 | * This program is free software; you can redistribute it and/or modify |
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42 | * it under the terms of the GNU General Public License as published by |
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43 | * the Free Software Foundation; either version 2 of the License, or |
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44 | * (at your option) any later version. |
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45 | * |
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46 | * This program is distributed in the hope that it will be useful, |
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47 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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48 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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49 | * GNU General Public License for more details. |
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50 | * |
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51 | * You should have received a copy of the GNU General Public License |
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52 | * along with this program; if not, write to the Free Software |
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53 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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54 | * |
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55 | */ |
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56 | |||
57 | #ifndef __KERNEL_CONST_H__ |
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58 | #define __KERNEL_CONST_H__ |
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59 | |||
60 | #include <ll/i386/tss-ctx.h> |
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61 | |||
62 | /* -------------------------------------------------------------------- */ |
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63 | /* These constant can be freely changed to customize the kernel */ |
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64 | /* -------------------------------------------------------------------- */ |
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65 | |||
66 | /* Tasks, functions, interrupts, exceptions */ |
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67 | #define MAX_PROC TSSMax-1 /*+ Maximum number of tasks |
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68 | Change the value in |
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69 | ll/i386/tss-ctx.h!!! |
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70 | -1 because there is the |
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71 | global context!!! +*/ |
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72 | #define MAX_RUNLEVEL_FUNC 40 /*+ Runlevel functions +*/ |
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73 | #define STACK_SIZE 4096U /*+ Stack size in bytes +*/ |
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74 | #define JET_TABLE_DIM 20U /*+ Max n. of Jet entries +*/ |
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75 | #define MAX_CANCPOINTS 20U /*+ maximum number of cancellation |
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76 | points (look at kill.c) +*/ |
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77 | #define MAX_SIGINTPOINTS 20U /*+ maximum number of signal |
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78 | interruptable points +*/ |
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79 | |||
80 | /* Levels and modules */ |
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81 | #define MAX_SCHED_LEVEL 16U /*+ Max Schedule levels +*/ |
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82 | #define MAX_RES_LEVEL 8U /*+ Max Resource levels +*/ |
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83 | #define MAX_LEVELNAME 20U /*+ Level Name Max Lenght +*/ |
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84 | #define MAX_MODULENAME 20U /*+ Resource Module Name Max L. +*/ |
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85 | #define MAX_TASKNAME 20U /*+ Task Name Max Length +*/ |
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86 | |||
87 | /* Resource and communication */ |
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88 | #define MAX_CPRINT_BUF 512U /*+ Length of cprintf() buffer +*/ |
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89 | |||
90 | |||
91 | /* -------------------------------------------------------------------- */ |
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92 | /* End of user customazable constants */ |
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93 | /* -------------------------------------------------------------------- */ |
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94 | |||
95 | |||
96 | /*+ this is the bandwidth used in the on-line guarantee algorithm |
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97 | the value means x/MAX_BANDWIDTH free bandwidth... +*/ |
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98 | #define MAX_BANDWIDTH MAX_DWORD |
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99 | |||
100 | |||
101 | |||
102 | /*+ STATUS attributes are divided in 2 sets: |
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103 | - kernel status set (FREE, EXE, SLEEP, IDLE) |
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104 | - scheduling modules status set (the remainings status! READY...) |
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105 | the values are in the range [MODULE_STATUS_BASE, APER_STATUS_BASE-1] |
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106 | - aperiodic servers status set |
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107 | the minimum value is APER_STATUS_BASE |
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108 | The statuses must be separated because an aperiodic server may, |
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109 | for example put an event that checks a task state; |
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110 | +*/ |
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111 | |||
112 | #define FREE 0 |
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113 | #define EXE 1 |
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114 | #define SLEEP 2 |
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115 | #define WAIT_JOIN 3 |
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116 | #define WAIT_COND 4 |
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117 | #define WAIT_SIG 5 |
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118 | #define WAIT_SEM 6 |
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119 | #define WAIT_NANOSLEEP 7 |
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120 | #define WAIT_SIGSUSPEND 8 |
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121 | #define WAIT_MQSEND 9 |
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122 | #define WAIT_MQRECEIVE 10 |
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123 | |||
124 | /*+ base status for scheduling levels +*/ |
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125 | #define MODULE_STATUS_BASE 128 |
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126 | |||
127 | /*+ base status for aperiodic servers +*/ |
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128 | #define APER_STATUS_BASE 1024 |
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129 | |||
130 | /*+ base status for libraries +*/ |
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131 | #define LIB_STATUS_BASE 2048 |
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132 | |||
133 | /*+ return value for killed tasks; it is equal to PTHREAD_CANCELED!!! +*/ |
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134 | #define TASK_CANCELED (void *)1 |
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135 | |||
136 | /*+ Set the cancellation state of the task +*/ |
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137 | #define TASK_CANCEL_ENABLE KILL_ENABLED |
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138 | #define TASK_CANCEL_DISABLE 0 |
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139 | |||
140 | /*+ Set the cancellation type of the task +*/ |
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141 | #define TASK_CANCEL_DEFERRED KILL_DEFERRED |
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142 | #define TASK_CANCEL_ASYNCHRONOUS 0 |
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143 | |||
144 | /* C stuff */ |
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145 | |||
146 | |||
147 | #ifndef NIL |
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148 | #define NIL -1 /*+ integer unvalid value +*/ |
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149 | #endif |
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150 | |||
151 | /*+ Blocking attribute for semaphore, port & keyboard operations +*/ |
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152 | #define BLOCK 1 |
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153 | #define NON_BLOCK 0 |
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154 | |||
155 | #define DEFAULT (DWORD)-1 |
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156 | |||
157 | /*+ sys_atrunlevel status bit values: used to signal that the function |
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158 | has to be called +*/ |
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159 | #define RUNLEVEL_INIT 1 /*+ init time +*/ |
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160 | #define RUNLEVEL_SHUTDOWN 2 /*+ shutting down the system +*/ |
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161 | #define RUNLEVEL_BEFORE_EXIT 3 /*+ before the kernel has been terminated +*/ |
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162 | #define RUNLEVEL_AFTER_EXIT 4 /*+ after the kernel has been terminated +*/ |
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163 | #define NO_AT_ABORT 8 /*+ only when sys_end is called +*/ |
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164 | |||
165 | /* |
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166 | #define EXC_CLEAR 0 |
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167 | #define EXC_INSTALLED 1 |
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168 | #define EXC_ACTIVE 2 |
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169 | #define EXC_MASKED 4 |
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170 | */ |
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171 | #endif /* __CONST_H__ */ |
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172 |