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 * @(#)swap.c 8.3 (Berkeley) 4/29/95 34 * $FreeBSD: src/usr.bin/systat/swap.c,v 1.12.2.2 2001/07/04 22:54:14 kris Exp $ 35 * $DragonFly: src/usr.bin/systat/swap.c,v 1.5 2008/11/10 04:59:45 swildner Exp $ 36 */ 37 38 /* 39 * swapinfo - based on a program of the same name by Kevin Lahey 40 */ 41 42 #include <sys/param.h> 43 #include <sys/conf.h> 44 #include <sys/ioctl.h> 45 #include <sys/stat.h> 46 47 #include <kvm.h> 48 #include <nlist.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <unistd.h> 52 #include <string.h> 53 #include <err.h> 54 55 #include "systat.h" 56 #include "extern.h" 57 58 void showspace(char *header, int hlen, long blocksize); 59 60 kvm_t *kd; 61 62 static long blocksize; 63 static int hlen; 64 65 WINDOW * 66 openswap(void) 67 { 68 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 69 } 70 71 void 72 closeswap(WINDOW *w) 73 { 74 if (w == NULL) 75 return; 76 wclear(w); 77 wrefresh(w); 78 delwin(w); 79 } 80 81 /* 82 * The meat of all the swap stuff is stolen from pstat(8)'s 83 * swapmode(), which is based on a program called swapinfo written by 84 * Kevin Lahey <kml@rokkaku.atl.ga.us>. 85 */ 86 87 int 88 initswap(void) 89 { 90 char msgbuf[BUFSIZ]; 91 static int once = 0; 92 struct kvm_swap dummy; 93 94 if (once) 95 return (1); 96 97 if (kvm_getswapinfo(kd, &dummy, 1, 0) < 0) { 98 snprintf(msgbuf, sizeof(msgbuf), "systat: kvm_getswapinfo failed"); 99 error("%s", msgbuf); 100 return (0); 101 } 102 103 once = 1; 104 return (1); 105 } 106 107 static struct kvm_swap kvmsw[16]; 108 static int kvnsw; 109 110 void 111 fetchswap(void) 112 { 113 kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0); 114 } 115 116 void 117 labelswap(void) 118 { 119 char *header; 120 int row, i; 121 122 fetchswap(); 123 124 row = 0; 125 wmove(wnd, row, 0); wclrtobot(wnd); 126 header = getbsize(&hlen, &blocksize); 127 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s", 128 "Disk", hlen, header, "Used", 129 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100"); 130 131 for (i = 0; i < kvnsw; ++i) { 132 mvwprintw(wnd, i + 1, 0, "%-5s", kvmsw[i].ksw_devname); 133 } 134 } 135 136 void 137 showswap(void) 138 { 139 int i; 140 int pagesize = getpagesize(); 141 142 #define CONVERT(v) ((int)((quad_t)(v) * pagesize / blocksize)) 143 144 for (i = 0; i <= kvnsw; ++i) { 145 int _col = 5; 146 int count; 147 148 if (i == kvnsw) { 149 if (kvnsw == 1) 150 break; 151 mvwprintw( 152 wnd, 153 i + 1, 154 _col, 155 "%-5s", 156 "Total" 157 ); 158 _col += 5; 159 } 160 if (kvmsw[i].ksw_total == 0) { 161 mvwprintw( 162 wnd, 163 i + 1, 164 _col + 5, 165 "(swap not configured)" 166 ); 167 continue; 168 } 169 170 mvwprintw( 171 wnd, 172 i + 1, 173 _col, 174 "%*d", 175 hlen, 176 CONVERT(kvmsw[i].ksw_total) 177 ); 178 _col += hlen; 179 180 mvwprintw( 181 wnd, 182 i + 1, 183 _col, 184 "%9d ", 185 CONVERT(kvmsw[i].ksw_used) 186 ); 187 188 count = (int)((double)kvmsw[i].ksw_used * 49.999 / 189 (double)kvmsw[i].ksw_total); 190 191 while (count >= 0) { 192 waddch(wnd, 'X'); 193 --count; 194 } 195 } 196 } 197