mbufs.c revision 23087 
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";
36static const char rcsid[] =
37	"$Id$";
38#endif /* not lint */
39
40#include <sys/param.h>
41#include <sys/types.h>
42#include <sys/mbuf.h>
43#include <sys/sysctl.h>
44
45#include <stdlib.h>
46#include <string.h>
47#include <paths.h>
48#include "systat.h"
49#include "extern.h"
50
51static struct mbstat *mb;
52
53char *mtnames[] = {
54	"free",
55	"data",
56	"headers",
57	"sockets",
58	"pcbs",
59	"routes",
60	"hosts",
61	"arps",
62	"socknames",
63	"zombies",
64	"sockopts",
65	"frags",
66	"rights",
67	"ifaddrs",
68};
69
70#define	NNAMES	(sizeof (mtnames) / sizeof (mtnames[0]))
71
72WINDOW *
73openmbufs()
74{
75	return (subwin(stdscr, LINES-5-1, 0, 5, 0));
76}
77
78void
79closembufs(w)
80	WINDOW *w;
81{
82	if (w == NULL)
83		return;
84	wclear(w);
85	wrefresh(w);
86	delwin(w);
87}
88
89void
90labelmbufs()
91{
92	wmove(wnd, 0, 0); wclrtoeol(wnd);
93	mvwaddstr(wnd, 0, 10,
94	    "/0   /5   /10  /15  /20  /25  /30  /35  /40  /45  /50  /55  /60");
95}
96
97void
98showmbufs()
99{
100	register int i, j, max, index;
101	char buf[10];
102
103	if (mb == 0)
104		return;
105	for (j = 0; j < wnd->maxy; j++) {
106		max = 0, index = -1;
107		for (i = 0; i < wnd->maxy; i++) {
108			if (i == MT_FREE)
109				continue;
110			if (mb->m_mtypes[i] > max) {
111				max = mb->m_mtypes[i];
112				index = i;
113			}
114		}
115		if (max == 0)
116			break;
117		if (j > NNAMES)
118			mvwprintw(wnd, 1+j, 0, "%10d", index);
119		else
120			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtnames[index]);
121		wmove(wnd, 1 + j, 10);
122		if (max > 60) {
123			sprintf(buf, " %d", max);
124			max = 60;
125			while (max--)
126				waddch(wnd, 'X');
127			waddstr(wnd, buf);
128		} else
129			while (max--)
130				waddch(wnd, 'X');
131		wclrtoeol(wnd);
132		mb->m_mbufs -= mb->m_mtypes[index];
133		mb->m_mtypes[index] = 0;
134	}
135	if (mb->m_mbufs) {
136		mvwprintw(wnd, 1+j, 0, "%-10.10s", "free");
137		if (mb->m_mbufs > 60) {
138			sprintf(buf, " %d", mb->m_mbufs);
139			mb->m_mbufs = 60;
140			while (mb->m_mbufs--)
141				waddch(wnd, 'X');
142			waddstr(wnd, buf);
143		} else {
144			while(mb->m_mbufs--)
145				waddch(wnd, 'X');
146		}
147		wclrtoeol(wnd);
148		j++;
149	}
150	wmove(wnd, 1+j, 0); wclrtobot(wnd);
151}
152
153int
154initmbufs()
155{
156	size_t len;
157	int name[3];
158
159	name[0] = CTL_KERN;
160	name[1] = KERN_IPC;
161	name[2] = KIPC_MBSTAT;
162	len = 0;
163	if (sysctl(name, 3, 0, &len, 0, 0) < 0) {
164		error("sysctl getting mbstat size failed");
165		return 0;
166	}
167
168	if (mb == 0)
169		mb = (struct mbstat *)calloc(1, sizeof *mb);
170	return 1;
171}
172
173void
174fetchmbufs()
175{
176	int name[3];
177	size_t len;
178
179	name[0] = CTL_KERN;
180	name[1] = KERN_IPC;
181	name[2] = KIPC_MBSTAT;
182	len = sizeof *mb;
183
184	if (sysctl(name, 3, mb, &len, 0, 0) < 0)
185		return;
186}
187