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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)swap.c 8.3 (Berkeley) 4/29/95
30 * $FreeBSD: src/usr.bin/systat/swap.c,v 1.12.2.2 2001/07/04 22:54:14 kris Exp $
31 */
32
33 /*
34 * swapinfo - based on a program of the same name by Kevin Lahey
35 */
36
37 #include <sys/param.h>
38 #include <sys/conf.h>
39 #include <sys/ioctl.h>
40 #include <sys/stat.h>
41
42 #include <kvm.h>
43 #include <nlist.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <unistd.h>
47 #include <string.h>
48 #include <err.h>
49
50 #include "systat.h"
51 #include "extern.h"
52
53 void showspace(char *header, int hlen, long blocksize);
54
55 static long blocksize;
56 static int hlen;
57
58 WINDOW *
openswap(void)59 openswap(void)
60 {
61 return (subwin(stdscr, LINES-5-1, 0, 5, 0));
62 }
63
64 void
closeswap(WINDOW * w)65 closeswap(WINDOW *w)
66 {
67 if (w == NULL)
68 return;
69 wclear(w);
70 wrefresh(w);
71 delwin(w);
72 }
73
74 /*
75 * The meat of all the swap stuff is stolen from pstat(8)'s
76 * swapmode(), which is based on a program called swapinfo written by
77 * Kevin Lahey <kml@rokkaku.atl.ga.us>.
78 */
79
80 int
initswap(void)81 initswap(void)
82 {
83 char msgbuf[BUFSIZ];
84 static int once = 0;
85 struct kvm_swap dummy;
86
87 if (once)
88 return (1);
89
90 if (kvm_getswapinfo(kd, &dummy, 1, 0) < 0) {
91 snprintf(msgbuf, sizeof(msgbuf), "systat: kvm_getswapinfo failed");
92 error("%s", msgbuf);
93 return (0);
94 }
95
96 once = 1;
97 return (1);
98 }
99
100 static struct kvm_swap kvmsw[16];
101 static int kvnsw;
102
103 void
fetchswap(void)104 fetchswap(void)
105 {
106 kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0);
107 }
108
109 void
labelswap(void)110 labelswap(void)
111 {
112 char *header;
113 int row, i;
114
115 fetchswap();
116
117 row = 0;
118 wmove(wnd, row, 0); wclrtobot(wnd);
119 header = getbsize(&hlen, &blocksize);
120 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s",
121 "Disk", hlen, header, "Used",
122 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100");
123
124 for (i = 0; i < kvnsw; ++i) {
125 mvwprintw(wnd, i + 1, 0, "%-5s", kvmsw[i].ksw_devname);
126 }
127 }
128
129 void
showswap(void)130 showswap(void)
131 {
132 int i;
133 int pagesize = getpagesize();
134
135 #define CONVERT(v) ((int)((quad_t)(v) * pagesize / blocksize))
136
137 for (i = 0; i <= kvnsw; ++i) {
138 int _col = 5;
139 int count;
140
141 if (i == kvnsw) {
142 if (kvnsw == 1)
143 break;
144 mvwprintw(
145 wnd,
146 i + 1,
147 0,
148 "%-5s",
149 "Total"
150 );
151 }
152 if (kvmsw[i].ksw_total == 0) {
153 mvwprintw(
154 wnd,
155 i + 1,
156 _col + 5,
157 "(swap not configured)"
158 );
159 continue;
160 }
161
162 mvwprintw(
163 wnd,
164 i + 1,
165 _col,
166 "%*d",
167 hlen,
168 CONVERT(kvmsw[i].ksw_total)
169 );
170 _col += hlen;
171
172 mvwprintw(
173 wnd,
174 i + 1,
175 _col,
176 "%9d ",
177 CONVERT(kvmsw[i].ksw_used)
178 );
179
180 count = (int)((double)kvmsw[i].ksw_used * 49.999 /
181 (double)kvmsw[i].ksw_total);
182
183 while (count >= 0) {
184 waddch(wnd, 'X');
185 --count;
186 }
187 }
188 }
189