mbufs.c revision 63226 
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  "$FreeBSD: head/usr.bin/systat/mbufs.c 63226 2000-07-15 16:24:21Z alfred $";
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 <errno.h>
46#include <stdlib.h>
47#include <string.h>
48#include <paths.h>
49#include "systat.h"
50#include "extern.h"
51
52static struct mbstat *mb;
53static u_long *m_mbtypes;
54static int nmbtypes;
55
56static struct mtnames {
57	int mt_type;
58	char *mt_name;
59} mtnames[] = {
60	{ MT_DATA, 	"data"},
61	{ MT_HEADER,	"headers"},
62	{ MT_SONAME,	"socknames"},
63	{ MT_FTABLE,	"frags"},
64	{ MT_CONTROL,	"control"},
65	{ MT_OOBDATA,	"oobdata"}
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	char *mtname;
101
102	if (mb == 0)
103		return;
104	for (j = 0; j < wnd->_maxy; j++) {
105		max = 0, index = -1;
106		for (i = 0; i < wnd->_maxy; i++) {
107			if (i == MT_FREE)
108				continue;
109			if (i >= nmbtypes)
110				break;
111			if (m_mbtypes[i] > max) {
112				max = m_mbtypes[i];
113				index = i;
114			}
115		}
116		if (max == 0)
117			break;
118
119		mtname = NULL;
120		for (i = 0; i < NNAMES; i++)
121			if (mtnames[i].mt_type == index)
122				mtname = mtnames[i].mt_name;
123		if (mtname == NULL)
124			mvwprintw(wnd, 1+j, 0, "%10d", index);
125		else
126			mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname);
127		wmove(wnd, 1 + j, 10);
128		if (max > 60) {
129			snprintf(buf, sizeof(buf), " %d", max);
130			max = 60;
131			while (max--)
132				waddch(wnd, 'X');
133			waddstr(wnd, buf);
134		} else
135			while (max--)
136				waddch(wnd, 'X');
137		wclrtoeol(wnd);
138		mb->m_mbufs -= m_mbtypes[index];
139		m_mbtypes[index] = 0;
140	}
141	if (mb->m_mbufs) {
142		mvwprintw(wnd, 1+j, 0, "%-10.10s", "free");
143		if (mb->m_mbufs > 60) {
144			snprintf(buf, sizeof(buf), " %ld", mb->m_mbufs);
145			mb->m_mbufs = 60;
146			while (mb->m_mbufs--)
147				waddch(wnd, 'X');
148			waddstr(wnd, buf);
149		} else {
150			while(mb->m_mbufs--)
151				waddch(wnd, 'X');
152		}
153		wclrtoeol(wnd);
154		j++;
155	}
156	wmove(wnd, 1+j, 0); wclrtobot(wnd);
157}
158
159int
160initmbufs()
161{
162	size_t len, mbtypeslen;
163
164	if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) {
165		error("sysctl getting mbtypes size failed");
166		return 0;
167	}
168	if ((m_mbtypes = calloc(1, mbtypeslen)) == NULL) {
169		error("calloc mbtypes failed");
170		return 0;
171	}
172	nmbtypes = mbtypeslen / sizeof(*m_mbtypes);
173
174	len = 0;
175	if (sysctlbyname("kern.ipc.mbstat", 0, &len, 0, 0) < 0) {
176		error("sysctl getting mbstat size failed");
177		return 0;
178	}
179
180	if (mb == 0)
181		mb = (struct mbstat *)calloc(1, sizeof *mb);
182	return 1;
183}
184
185void
186fetchmbufs()
187{
188	size_t len;
189
190	len = sizeof *mb;
191	if (sysctlbyname("kern.ipc.mbstat", mb, &len, 0, 0) < 0)
192		printw("sysctl: mbstat: %s", strerror(errno));
193
194	len = nmbtypes * sizeof *m_mbtypes;
195	if (sysctlbyname("kern.ipc.mbtypes", m_mbtypes, &len, 0, 0) < 0)
196		printw("sysctl: mbtypes: %s", strerror(errno));
197}
198