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/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Paolo Gai <pj@gandalf.sssup.it>
* Massimiliano Giorgi <massy@gandalf.sssup.it>
* Luca Abeni <luca@gandalf.sssup.it>
* (see the web pages for full authors list)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/**
------------
CVS : $Id: ssutils.h,v 1.1 2005-02-25 10:55:09 pj Exp $
File: $File$
Revision: $Revision: 1.1 $
Last update: $Date: 2005-02-25 10:55:09 $
------------
This file contains utility functions used into
aperiodic server SS (Sporadic Server)
Title:
SS (Sporadic Server) utilities
**/
/*
* Copyright (C) 2000 Paolo Gai
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __SSUTILS_H__
#define __SSUTILS_H__
#include <kernel/config.h>
#include <sys/types.h>
#include <kernel/types.h>
#include <arch/sys/cdefs.h>
__BEGIN_DECLS
/* Max size of replenish queue */
#define SS_MAX_REPLENISH MAX_EVENT
/*+ Used to store replenishment events +*/
/* Now we use static allocated array. In this way, no more then
SS_MAX_REPLENISH replenishments can be posted.
typedef struct {
struct timespec rtime;
int ramount;
replenishq *next;
} replenishq;
*/
/*+ SS local memory allocator.
Can be used for performance optimization. +*/
void *ss_alloc(DWORD b);
/*+ Insert an element at tail of replenish queue
LEVEL l module level
int amount element to insert
RETURNS:
0 seccesfull insertion
NIL no more space for insertion +*/
int ssq_inslast(LEVEL l, int amount);
/*+ Get first element from replenish queue
LEVEL l module level
RETURS: extracted element +*/
int ssq_getfirst(LEVEL l);
/*+ Enquire for empty queue
LEVEL l module level
RETURS:
0 queue is not empty
1 queue is empty +*/
int ssq_isempty(LEVEL l);
__END_DECLS
#endif