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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
*/
/*
* Copyright (C) 2000 Massimiliano Giorgi
*
* 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
*
* CVS : $Id: wait.c,v 1.1.1.1 2004-05-24 18:03:44 giacomo Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include "types.h"
#include <trace.h>
#include "util.h"
/* This demo computes the distribution of the wait times on disk requests */
#define MAXX 37000
#define PREC 37000
#define DELTA ((double)MAXX/(double)PREC)
#include "distr.c"
int task
;
long a
=-1;
int waitfunc
(trc_event_t
*ev
)
{
if (event_class
(ev
->event
)!=TRC_CLASS_USER
) return 0;
if (ev
->x.
usr.
n!=task
) return 0;
if (ev
->event
==TRC_USER1
) {
a
=ev
->time;
return 0;
}
if (ev
->event
==TRC_USER2
) {
if (a
!=-1) d_insert
(ev
->time
-a
);
a
=-1;
}
return 0;
}
int main
(int argc
, char *argv
[])
{
FILE
*fout
;
int res
;
if (argc
!=4) {
fprintf(stderr
,"missing filename!\n");
return -1;
}
d_init
();
task
=atoi(argv
[2]);
res
=read_trace
(argv
[1],waitfunc
);
if (res
==0) {
fout
=fopen(argv
[3],"wt");
if (fout
!=NULL
) {
d_dump
(fout
);
fclose(fout
);
} else
fprintf(stderr
,"can't create output file!\n");
} else
fprintf(stderr
,"read_trace error\n");
return 0;
}