freebsd-dev/usr.bin/systat/mbufs.c

188 lines
4.3 KiB
C

/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
static char sccsid[] = "@(#)mbufs.c 8.1 (Berkeley) 6/6/93";
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/types.h>
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
#include "systat.h"
#include "extern.h"
static struct mbstat *mb;
char *mtnames[] = {
"free",
"data",
"headers",
"sockets",
"pcbs",
"routes",
"hosts",
"arps",
"socknames",
"zombies",
"sockopts",
"frags",
"rights",
"ifaddrs",
};
#define NNAMES (sizeof (mtnames) / sizeof (mtnames[0]))
WINDOW *
openmbufs()
{
return (subwin(stdscr, LINES-5-1, 0, 5, 0));
}
void
closembufs(w)
WINDOW *w;
{
if (w == NULL)
return;
wclear(w);
wrefresh(w);
delwin(w);
}
void
labelmbufs()
{
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()
{
register int i, j, max, index;
char buf[10];
if (mb == 0)
return;
for (j = 0; j < wnd->_maxy; j++) {
max = 0, index = -1;
for (i = 0; i < wnd->_maxy; i++) {
if (i == MT_FREE)
continue;
if (mb->m_mtypes[i] > max) {
max = mb->m_mtypes[i];
index = i;
}
}
if (max == 0)
break;
if (j > NNAMES)
mvwprintw(wnd, 1+j, 0, "%10d", index);
else
mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
wmove(wnd, 1 + j, 10);
if (max > 60) {
snprintf(buf, sizeof(buf), " %d", max);
max = 60;
while (max--)
waddch(wnd, 'X');
waddstr(wnd, buf);
} else
while (max--)
waddch(wnd, 'X');
wclrtoeol(wnd);
mb->m_mbufs -= mb->m_mtypes[index];
mb->m_mtypes[index] = 0;
}
if (mb->m_mbufs) {
mvwprintw(wnd, 1+j, 0, "%-10.10s", "free");
if (mb->m_mbufs > 60) {
snprintf(buf, sizeof(buf), " %ld", mb->m_mbufs);
mb->m_mbufs = 60;
while (mb->m_mbufs--)
waddch(wnd, 'X');
waddstr(wnd, buf);
} else {
while(mb->m_mbufs--)
waddch(wnd, 'X');
}
wclrtoeol(wnd);
j++;
}
wmove(wnd, 1+j, 0); wclrtobot(wnd);
}
int
initmbufs()
{
size_t len;
int name[3];
name[0] = CTL_KERN;
name[1] = KERN_IPC;
name[2] = KIPC_MBSTAT;
len = 0;
if (sysctl(name, 3, 0, &len, 0, 0) < 0) {
error("sysctl getting mbstat size failed");
return 0;
}
if (mb == 0)
mb = (struct mbstat *)calloc(1, sizeof *mb);
return 1;
}
void
fetchmbufs()
{
int name[3];
size_t len;
name[0] = CTL_KERN;
name[1] = KERN_IPC;
name[2] = KIPC_MBSTAT;
len = sizeof *mb;
if (sysctl(name, 3, mb, &len, 0, 0) < 0)
printw("sysctl: %s", strerror(errno));
}