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/*
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 * Project: S.Ha.R.K.
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 *
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 * Coordinators:
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 *   Giorgio Buttazzo    <giorgio@sssup.it>
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *
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 * Authors     :
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 *   Paolo Gai           <pj@gandalf.sssup.it>
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 *   Massimiliano Giorgi <massy@gandalf.sssup.it>
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 *   Luca Abeni          <luca@gandalf.sssup.it>
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 *   (see the web pages for full authors list)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://shark.sssup.it
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 */
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/**
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 ------------
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 CVS :        $Id: ssutils.h,v 1.2 2003-03-13 13:39:05 pj Exp $
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 File:        $File$
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 Revision:    $Revision: 1.2 $
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 Last update: $Date: 2003-03-13 13:39:05 $
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 ------------
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 This file contains utility functions used into
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 aperiodic server SS (Sporadic Server)
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 Title:
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   SS (Sporadic Server) utilities
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**/
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/*
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 * Copyright (C) 2000 Paolo Gai
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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#ifndef __SSUTILS_H__
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#define __SSUTILS_H__
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#include <kernel/config.h>
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#include <sys/types.h>
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#include <kernel/types.h>
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#include "ll/sys/cdefs.h"
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__BEGIN_DECLS
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/* Max size of replenish queue */
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#define SS_MAX_REPLENISH MAX_EVENT
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/*+ Used to store replenishment events +*/
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/* Now we use static allocated array. In this way, no more then
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   SS_MAX_REPLENISH replenishments can be posted.
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typedef struct {
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        struct timespec rtime;
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        int ramount;
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        replenishq *next;
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} replenishq;
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*/
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/*+ SS local memory allocator.
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    Can be used for performance optimization. +*/
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void *ss_alloc(DWORD b);
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/*+ Insert an element at tail of replenish queue
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        LEVEL l                 module level
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        int   amount            element to insert
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        RETURNS:
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          NIL   no more space for insertion +*/
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int ssq_inslast(LEVEL l, int amount);
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/*+ Get first element from replenish queue
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        LEVEL l         module level
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        RETURS: extracted element +*/
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int ssq_getfirst(LEVEL l);
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/*+ Enquire for empty queue
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        LEVEL l         module level
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        RETURS:
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          1     queue is empty +*/
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int ssq_isempty(LEVEL l);
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__END_DECLS
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#endif