WebSVN - shark - Blame - Rev 1621 - /shark/branches/xen/modules/bd_edf/bd

Rev	Author	Line No.	Line
961	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	/*
		41	* CVS : $Id: bd_edf.c,v 1.1 2005-02-25 10:55:09 pj Exp $
		42	*
		43	* File: $File$
		44	* Revision: $Revision: 1.1 $
		45	* Last update: $Date: 2005-02-25 10:55:09 $
		46	*/
		47
		48	#include <bd_edf/bd_edf/bd_edf.h>
		49
		50	#include <ll/ll.h>
1621	fabio	51	#include <arch/string.h>
		52	#include <arch/stdio.h>
961	pj	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_register(RLEVEL l, PID p, RES_MODEL *r)
		68	{
		69	bd_edf_resource_des m=(bd_edf_resource_des)(resource_table[l]);
		70	BDEDF_RES_MODEL *rm;
		71
		72	if (r->rclass!=BDEDF_RCLASS)
		73	return -1;
		74	if (r->level && r->level !=l)
		75	return -1;
		76
		77	rm=(BDEDF_RES_MODEL*)r;
		78	assertk(mylevel==l);
		79	m->dl[p]=rm->dl;
		80
		81	return 0;
		82	}
		83
		84	static void res_detach(RLEVEL l, PID p)
		85	{
		86	bd_edf_resource_des m=(bd_edf_resource_des)(resource_table[l]);
		87	assertk(mylevel==l);
		88	m->dl[p]=0;
		89	}
		90
		91	RLEVEL BD_EDF_register_module(void)
		92	{
		93	RLEVEL l;
		94	bd_edf_resource_des *m;
		95	int i;
		96
		97	/* request an entry in the level_table */
		98	l=resource_alloc_descriptor();
		99
		100	/* alloc the space needed for the EDF_level_des */
		101	m=(bd_edf_resource_des*)kern_alloc(sizeof(bd_edf_resource_des));
		102
		103	/* update the level_table with the new entry */
		104	resource_table[l]=(resource_des*)m;
		105
		106	/* fill the resource_des descriptor */
		107	m->rd.rtype=DEFAULT_RTYPE;
		108	m->rd.res_register=res_register;
		109	m->rd.res_detach=res_detach;
		110
		111	for (i=0;i<MAX_PROC;i++) m->dl[i]=MAX_TIME;
		112
		113	assertk(mylevel==-1);
		114	mylevel=l;
		115
		116	return l;
		117	}
		118
		119	TIME bd_edf_getdl(void)
		120	{
		121	bd_edf_resource_des *m;
		122	if (mylevel==-1) return MAX_TIME;
		123	m=(bd_edf_resource_des*)(resource_table[mylevel]);
		124	if (m->dl[exec_shadow]==MAX_TIME) return MAX_TIME;
		125	return m->dl[exec_shadow]+sys_gettime(NULL);
		126	}

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