dma: allow empty sender in queue files
[dragonfly.git] / usr.bin / systat / mbufs.c
blob07f4f3304cedf5dab1eacbd93510e45b6207d4f4
1 /*-
2 * Copyright (c) 1980, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
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.
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.
33 * @(#)mbufs.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/systat/mbufs.c,v 1.10.2.1 2000/08/26 09:36:55 ps Exp $
35 * $DragonFly: src/usr.bin/systat/mbufs.c,v 1.8 2008/11/10 04:59:45 swildner Exp $
38 #define _KERNEL_STRUCTURES
39 #include <sys/param.h>
40 #include <sys/types.h>
41 #include <sys/mbuf.h>
42 #include <sys/sysctl.h>
44 #include <errno.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <paths.h>
48 #include "systat.h"
49 #include "extern.h"
51 static struct mbstat *mb;
52 static u_long *m_mbtypes;
53 static int nmbtypes;
55 static struct mtnames {
56 int mt_type;
57 const char *mt_name;
58 } mtnames[] = {
59 { MT_DATA, "data"},
60 { MT_HEADER, "headers"},
61 { MT_SONAME, "socknames"},
62 { MT_CONTROL, "control"},
63 { MT_OOBDATA, "oobdata"}
66 #define NNAMES (sizeof (mtnames) / sizeof (mtnames[0]))
68 WINDOW *
69 openmbufs(void)
71 return (subwin(stdscr, LINES-5-1, 0, 5, 0));
74 void
75 closembufs(WINDOW *w)
77 if (w == NULL)
78 return;
79 wclear(w);
80 wrefresh(w);
81 delwin(w);
84 void
85 labelmbufs(void)
87 wmove(wnd, 0, 0); wclrtoeol(wnd);
88 mvwaddstr(wnd, 0, 10,
89 "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50 /55 /60");
92 void
93 showmbufs(void)
95 int i, j, idx;
96 u_long max;
97 char buf[10];
98 const char *mtname;
100 if (mb == 0)
101 return;
102 for (j = 0; j < wnd->_maxy; j++) {
103 max = 0, idx = -1;
104 for (i = 0; i < wnd->_maxy; i++) {
105 if (i == MT_FREE)
106 continue;
107 if (i >= nmbtypes)
108 break;
109 if (m_mbtypes[i] > max) {
110 max = m_mbtypes[i];
111 idx = i;
114 if (max == 0)
115 break;
117 mtname = NULL;
118 for (i = 0; i < (int)NNAMES; i++)
119 if (mtnames[i].mt_type == idx)
120 mtname = mtnames[i].mt_name;
121 if (mtname == NULL)
122 mvwprintw(wnd, 1+j, 0, "%10d", idx);
123 else
124 mvwprintw(wnd, 1+j, 0, "%-10.10s", mtname);
125 wmove(wnd, 1 + j, 10);
126 if (max > 60) {
127 snprintf(buf, sizeof(buf), " %lu", max);
128 max = 60;
129 while (max--)
130 waddch(wnd, 'X');
131 waddstr(wnd, buf);
132 } else
133 while (max--)
134 waddch(wnd, 'X');
135 wclrtoeol(wnd);
136 mb->m_mbufs -= m_mbtypes[idx];
137 m_mbtypes[idx] = 0;
139 if (mb->m_mbufs) {
140 mvwprintw(wnd, 1+j, 0, "%-10.10s", "free");
141 if (mb->m_mbufs > 60) {
142 snprintf(buf, sizeof(buf), " %ld", mb->m_mbufs);
143 mb->m_mbufs = 60;
144 while (mb->m_mbufs--)
145 waddch(wnd, 'X');
146 waddstr(wnd, buf);
147 } else {
148 while(mb->m_mbufs--)
149 waddch(wnd, 'X');
151 wclrtoeol(wnd);
152 j++;
154 wmove(wnd, 1+j, 0); wclrtobot(wnd);
158 initmbufs(void)
160 size_t len, mbtypeslen;
162 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) {
163 error("sysctl getting mbtypes size failed");
164 return 0;
166 if ((m_mbtypes = calloc(1, mbtypeslen)) == NULL) {
167 error("calloc mbtypes failed");
168 return 0;
170 nmbtypes = mbtypeslen / sizeof(*m_mbtypes);
172 len = 0;
173 if (sysctlbyname("kern.ipc.mbstat", 0, &len, 0, 0) < 0) {
174 error("sysctl getting mbstat size failed");
175 return 0;
178 if (mb == 0)
179 mb = (struct mbstat *)calloc(1, sizeof *mb);
180 return 1;
183 void
184 fetchmbufs(void)
186 size_t len;
188 len = sizeof *mb;
189 if (sysctlbyname("kern.ipc.mbstat", mb, &len, 0, 0) < 0)
190 printw("sysctl: mbstat: %s", strerror(errno));
192 len = nmbtypes * sizeof *m_mbtypes;
193 if (sysctlbyname("kern.ipc.mbtypes", m_mbtypes, &len, 0, 0) < 0)
194 printw("sysctl: mbtypes: %s", strerror(errno));