Rev 3 | 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 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
||
| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
||
| 12 | * (see the web pages for full authors list) |
||
| 13 | * |
||
| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
| 15 | * |
||
| 16 | * http://www.sssup.it |
||
| 17 | * http://retis.sssup.it |
||
| 18 | * http://shark.sssup.it |
||
| 19 | */ |
||
| 20 | |||
| 21 | /* |
||
| 22 | * Copyright (C) 2000 Massimiliano Giorgi |
||
| 23 | * |
||
| 24 | * This program is free software; you can redistribute it and/or modify |
||
| 25 | * it under the terms of the GNU General Public License as published by |
||
| 26 | * the Free Software Foundation; either version 2 of the License, or |
||
| 27 | * (at your option) any later version. |
||
| 28 | * |
||
| 29 | * This program is distributed in the hope that it will be useful, |
||
| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 32 | * GNU General Public License for more details. |
||
| 33 | * |
||
| 34 | * You should have received a copy of the GNU General Public License |
||
| 35 | * along with this program; if not, write to the Free Software |
||
| 36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
| 37 | * |
||
| 38 | */ |
||
| 39 | |||
| 40 | /* |
||
| 38 | pj | 41 | * CVS : $Id: bd_edf.c,v 1.2 2003-01-07 17:07:50 pj Exp $ |
| 2 | pj | 42 | * |
| 43 | * File: $File$ |
||
| 38 | pj | 44 | * Revision: $Revision: 1.2 $ |
| 45 | * Last update: $Date: 2003-01-07 17:07:50 $ |
||
| 2 | pj | 46 | */ |
| 47 | |||
| 48 | #include <modules/bd_edf.h> |
||
| 49 | |||
| 50 | #include <ll/ll.h> |
||
| 51 | #include <ll/string.h> |
||
| 52 | #include <ll/stdio.h> |
||
| 53 | #include <kernel/const.h> |
||
| 54 | #include <sys/types.h> |
||
| 55 | #include <kernel/var.h> |
||
| 56 | #include <kernel/func.h> |
||
| 57 | #include <kernel/assert.h> |
||
| 58 | |||
| 59 | static int mylevel=-1; |
||
| 60 | |||
| 61 | typedef struct TAGbd_edf_resource_des |
||
| 62 | { |
||
| 63 | resource_des rd; |
||
| 64 | TIME dl[MAX_PROC]; |
||
| 65 | } bd_edf_resource_des; |
||
| 66 | |||
| 67 | static int res_level_accept_resource_model(RLEVEL l, RES_MODEL *r) |
||
| 68 | { |
||
| 69 | assertk(mylevel==l); |
||
| 70 | if (r->rclass==BDEDF_RCLASS||r->rclass==(BDEDF_RCLASS|l)) |
||
| 71 | return 0; |
||
| 72 | else |
||
| 73 | return -1; |
||
| 74 | } |
||
| 75 | |||
| 38 | pj | 76 | static int res_register(RLEVEL l, PID p, RES_MODEL *r) |
| 2 | pj | 77 | { |
| 78 | bd_edf_resource_des *m=(bd_edf_resource_des*)(resource_table[l]); |
||
| 38 | pj | 79 | BDEDF_RES_MODEL *rm; |
| 80 | |||
| 81 | if (r->rclass!=BDEDF_RCLASS) |
||
| 82 | return -1; |
||
| 83 | if (r->level && r->level !=l) |
||
| 84 | return -1; |
||
| 85 | |||
| 86 | rm=(BDEDF_RES_MODEL*)r; |
||
| 2 | pj | 87 | assertk(mylevel==l); |
| 88 | m->dl[p]=rm->dl; |
||
| 38 | pj | 89 | |
| 90 | return 0; |
||
| 2 | pj | 91 | } |
| 92 | |||
| 93 | static void res_detach(RLEVEL l, PID p) |
||
| 94 | { |
||
| 95 | bd_edf_resource_des *m=(bd_edf_resource_des*)(resource_table[l]); |
||
| 96 | assertk(mylevel==l); |
||
| 97 | m->dl[p]=0; |
||
| 98 | } |
||
| 99 | |||
| 38 | pj | 100 | RLEVEL BD_EDF_register_module(void) |
| 2 | pj | 101 | { |
| 102 | RLEVEL l; |
||
| 103 | bd_edf_resource_des *m; |
||
| 104 | int i; |
||
| 105 | |||
| 106 | /* request an entry in the level_table */ |
||
| 107 | l=resource_alloc_descriptor(); |
||
| 108 | |||
| 109 | /* alloc the space needed for the EDF_level_des */ |
||
| 110 | m=(bd_edf_resource_des*)kern_alloc(sizeof(bd_edf_resource_des)); |
||
| 111 | |||
| 112 | /* update the level_table with the new entry */ |
||
| 113 | resource_table[l]=(resource_des*)m; |
||
| 114 | |||
| 115 | /* fill the resource_des descriptor */ |
||
| 116 | m->rd.rtype=DEFAULT_RTYPE; |
||
| 117 | m->rd.res_register=res_register; |
||
| 118 | m->rd.res_detach=res_detach; |
||
| 119 | |||
| 120 | for (i=0;i<MAX_PROC;i++) m->dl[i]=MAX_TIME; |
||
| 121 | |||
| 122 | assertk(mylevel==-1); |
||
| 123 | mylevel=l; |
||
| 38 | pj | 124 | |
| 125 | return l; |
||
| 2 | pj | 126 | } |
| 127 | |||
| 128 | TIME bd_edf_getdl(void) |
||
| 129 | { |
||
| 130 | bd_edf_resource_des *m; |
||
| 131 | if (mylevel==-1) return MAX_TIME; |
||
| 132 | m=(bd_edf_resource_des*)(resource_table[mylevel]); |
||
| 133 | if (m->dl[exec_shadow]==MAX_TIME) return MAX_TIME; |
||
| 134 | return m->dl[exec_shadow]+sys_gettime(NULL); |
||
| 135 | } |