mbufs.c revision 1590 
1/*-
2 * Copyright (c) 1980, 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38#include <sys/param.h>
39#include <sys/types.h>
40#include <sys/mbuf.h>
41
42#include <stdlib.h>
43#include <string.h>
44#include <nlist.h>
45#include <paths.h>
46#include "systat.h"
47#include "extern.h"
48
49static struct mbstat *mb;
50
51char *mtnames[] = {
52	"free",
53	"data",
54	"headers",
55	"sockets",
56	"pcbs",
57	"routes",
58	"hosts",
59	"arps",
60	"socknames",
61	"zombies",
62	"sockopts",
63	"frags",
64	"rights",
65	"ifaddrs",
66};
67
68#define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
69
70WINDOW *
71openmbufs()
72{
73	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
74}
75
76void
77closembufs(w)
78	WINDOW *w;
79{
80	if (w == NULL)
81		return;
82	wclear(w);
83	wrefresh(w);
84	delwin(w);
85}
86
87void
88labelmbufs()
89{
90	wmove(wnd, 0, 0); wclrtoeol(wnd);
91	mvwaddstr(wnd, 0, 10,
92	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
93}
94
95void
96showmbufs()
97{
98	register int i, j, max, index;
99	char buf[10];
100
101	if (mb == 0)
102		return;
103	for (j = 0; j < wnd->maxy; j++) {
104		max = 0, index = -1;
105		for (i = 0; i < wnd->maxy; i++)
106			if (mb->m_mtypes[i] > max) {
107				max = mb->m_mtypes[i];
108				index = i;
109			}
110		if (max == 0)
111			break;
112		if (j > NNAMES)
113			mvwprintw(wnd, 1+j, 0, "%10d", index);
114		else
115			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
116		wmove(wnd, 1 + j, 10);
117		if (max > 60) {
118			sprintf(buf, " %d", max);
119			max = 60;
120			while (max--)
121				waddch(wnd, 'X');
122			waddstr(wnd, buf);
123		} else {
124			while (max--)
125				waddch(wnd, 'X');
126			wclrtoeol(wnd);
127		}
128		mb->m_mtypes[index] = 0;
129	}
130	wmove(wnd, 1+j, 0); wclrtobot(wnd);
131}
132
133static struct nlist namelist[] = {
134#define	X_MBSTAT	0
135	{ "_mbstat" },
136	{ "" }
137};
138
139int
140initmbufs()
141{
142	if (namelist[X_MBSTAT].n_type == 0) {
143		if (kvm_nlist(kd, namelist)) {
144			nlisterr(namelist);
145			return(0);
146		}
147		if (namelist[X_MBSTAT].n_type == 0) {
148			error("namelist on %s failed", _PATH_UNIX);
149			return(0);
150		}
151	}
152	if (mb == 0)
153		mb = (struct mbstat *)calloc(1, sizeof (*mb));
154	return(1);
155}
156
157void
158fetchmbufs()
159{
160	if (namelist[X_MBSTAT].n_type == 0)
161		return;
162	NREAD(X_MBSTAT, mb, sizeof (*mb));
163}
164