NetBSD/usr.bin/systat/mbufs.c

136 lines
3.3 KiB
C

/* $NetBSD: mbufs.c,v 1.16 2012/11/23 01:43:10 christos Exp $ */
/*-
* Copyright (c) 1980, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: mbufs.c,v 1.16 2012/11/23 01:43:10 christos Exp $");
#endif /* not lint */
#include <sys/param.h>
#define MBUFTYPES
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include "systat.h"
#include "extern.h"
static struct mbstat *mb;
#define NNAMES __arraycount(mbuftypes)
WINDOW *
openmbufs(void)
{
return (subwin(stdscr, -1, 0, 5, 0));
}
void
closembufs(WINDOW *w)
{
if (w == NULL)
return;
wclear(w);
wrefresh(w);
delwin(w);
}
void
labelmbufs(void)
{
wmove(wnd, 0, 0); wclrtoeol(wnd);
mvwaddstr(wnd, 0, 10,
"/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60");
}
void
showmbufs(void)
{
int i, j, max, idx;
char buf[10];
if (mb == 0)
return;
for (j = 1; j <= getmaxy(wnd); j++) {
max = 0, idx = -1;
for (i = 0; i < getmaxy(wnd); i++)
if (mb->m_mtypes[i] > max) {
max = mb->m_mtypes[i];
idx = i;
}
if (max == 0)
break;
if (j >= (int)NNAMES)
mvwprintw(wnd, j, 0, "%10d", idx);
else
mvwprintw(wnd, j, 0, "%-10.10s", &mbuftypes[idx][2]);
wmove(wnd, j, 10);
if (max > 60) {
snprintf(buf, sizeof buf, " %5d", max);
max = 60;
while (max--)
waddch(wnd, 'X');
waddstr(wnd, buf);
} else {
wclrtoeol(wnd);
whline(wnd, 'X', max);
}
mb->m_mtypes[idx] = 0;
}
wmove(wnd, j, 0);
wclrtobot(wnd);
}
int
initmbufs(void)
{
if (mb == 0)
mb = calloc(1, sizeof (*mb));
return(1);
}
void
fetchmbufs(void)
{
size_t len = sizeof(*mb);
if (sysctlbyname("kern.mbuf.stats", mb, &len, NULL, 0))
error("error getting \"kern.mbuf.stats\": %s", strerror(errno));
}