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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 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * (see the web pages for full authors list) |
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| 13 | * |
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| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 15 | * |
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| 16 | * http://www.sssup.it |
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| 17 | * http://retis.sssup.it |
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| 18 | * http://shark.sssup.it |
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| 19 | */ |
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| 20 | |||
| 21 | /* |
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| 22 | * Copyright (C) 2000 Massimiliano Giorgi |
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| 23 | * |
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| 24 | * This program is free software; you can redistribute it and/or modify |
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| 25 | * it under the terms of the GNU General Public License as published by |
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| 26 | * the Free Software Foundation; either version 2 of the License, or |
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| 27 | * (at your option) any later version. |
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| 28 | * |
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| 29 | * This program is distributed in the hope that it will be useful, |
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| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 32 | * GNU General Public License for more details. |
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| 33 | * |
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| 34 | * You should have received a copy of the GNU General Public License |
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| 35 | * along with this program; if not, write to the Free Software |
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| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 37 | * |
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| 38 | */ |
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| 39 | |||
| 40 | /* |
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| 671 | giacomo | 41 | * CVS : $Id: bd_edf.c,v 1.3 2004-05-25 10:02:01 giacomo Exp $ |
| 2 | pj | 42 | * |
| 43 | * File: $File$ |
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| 671 | giacomo | 44 | * Revision: $Revision: 1.3 $ |
| 45 | * Last update: $Date: 2004-05-25 10:02:01 $ |
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| 2 | pj | 46 | */ |
| 47 | |||
| 48 | #include <modules/bd_edf.h> |
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| 49 | |||
| 50 | #include <ll/ll.h> |
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| 51 | #include <ll/string.h> |
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| 52 | #include <ll/stdio.h> |
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| 53 | #include <kernel/const.h> |
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| 54 | #include <sys/types.h> |
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| 55 | #include <kernel/var.h> |
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| 56 | #include <kernel/func.h> |
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| 57 | #include <kernel/assert.h> |
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| 58 | |||
| 59 | static int mylevel=-1; |
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| 60 | |||
| 61 | typedef struct TAGbd_edf_resource_des |
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| 62 | { |
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| 63 | resource_des rd; |
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| 64 | TIME dl[MAX_PROC]; |
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| 65 | } bd_edf_resource_des; |
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| 66 | |||
| 38 | pj | 67 | static int res_register(RLEVEL l, PID p, RES_MODEL *r) |
| 2 | pj | 68 | { |
| 69 | bd_edf_resource_des *m=(bd_edf_resource_des*)(resource_table[l]); |
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| 38 | pj | 70 | BDEDF_RES_MODEL *rm; |
| 71 | |||
| 72 | if (r->rclass!=BDEDF_RCLASS) |
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| 73 | return -1; |
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| 74 | if (r->level && r->level !=l) |
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| 75 | return -1; |
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| 76 | |||
| 77 | rm=(BDEDF_RES_MODEL*)r; |
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| 2 | pj | 78 | assertk(mylevel==l); |
| 79 | m->dl[p]=rm->dl; |
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| 38 | pj | 80 | |
| 81 | return 0; |
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| 2 | pj | 82 | } |
| 83 | |||
| 84 | static void res_detach(RLEVEL l, PID p) |
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| 85 | { |
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| 86 | bd_edf_resource_des *m=(bd_edf_resource_des*)(resource_table[l]); |
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| 87 | assertk(mylevel==l); |
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| 88 | m->dl[p]=0; |
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| 89 | } |
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| 90 | |||
| 38 | pj | 91 | RLEVEL BD_EDF_register_module(void) |
| 2 | pj | 92 | { |
| 93 | RLEVEL l; |
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| 94 | bd_edf_resource_des *m; |
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| 95 | int i; |
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| 96 | |||
| 97 | /* request an entry in the level_table */ |
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| 98 | l=resource_alloc_descriptor(); |
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| 99 | |||
| 100 | /* alloc the space needed for the EDF_level_des */ |
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| 101 | m=(bd_edf_resource_des*)kern_alloc(sizeof(bd_edf_resource_des)); |
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| 102 | |||
| 103 | /* update the level_table with the new entry */ |
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| 104 | resource_table[l]=(resource_des*)m; |
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| 105 | |||
| 106 | /* fill the resource_des descriptor */ |
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| 107 | m->rd.rtype=DEFAULT_RTYPE; |
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| 108 | m->rd.res_register=res_register; |
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| 109 | m->rd.res_detach=res_detach; |
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| 110 | |||
| 111 | for (i=0;i<MAX_PROC;i++) m->dl[i]=MAX_TIME; |
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| 112 | |||
| 113 | assertk(mylevel==-1); |
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| 114 | mylevel=l; |
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| 38 | pj | 115 | |
| 116 | return l; |
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| 2 | pj | 117 | } |
| 118 | |||
| 119 | TIME bd_edf_getdl(void) |
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| 120 | { |
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| 121 | bd_edf_resource_des *m; |
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| 122 | if (mylevel==-1) return MAX_TIME; |
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| 123 | m=(bd_edf_resource_des*)(resource_table[mylevel]); |
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| 124 | if (m->dl[exec_shadow]==MAX_TIME) return MAX_TIME; |
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| 125 | return m->dl[exec_shadow]+sys_gettime(NULL); |
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| 126 | } |