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 * $DragonFly: src/usr.bin/systat/swap.c,v 1.5 2008/11/10 04:59:45 swildner Exp $ 32 */ 33 34 /* 35 * swapinfo - based on a program of the same name by Kevin Lahey 36 */ 37 38 #include <sys/param.h> 39 #include <sys/conf.h> 40 #include <sys/ioctl.h> 41 #include <sys/stat.h> 42 43 #include <kvm.h> 44 #include <nlist.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <unistd.h> 48 #include <string.h> 49 #include <err.h> 50 51 #include "systat.h" 52 #include "extern.h" 53 54 void showspace(char *header, int hlen, long blocksize); 55 56 kvm_t *kd; 57 58 static long blocksize; 59 static int hlen; 60 61 WINDOW * 62 openswap(void) 63 { 64 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 65 } 66 67 void 68 closeswap(WINDOW *w) 69 { 70 if (w == NULL) 71 return; 72 wclear(w); 73 wrefresh(w); 74 delwin(w); 75 } 76 77 /* 78 * The meat of all the swap stuff is stolen from pstat(8)'s 79 * swapmode(), which is based on a program called swapinfo written by 80 * Kevin Lahey <kml@rokkaku.atl.ga.us>. 81 */ 82 83 int 84 initswap(void) 85 { 86 char msgbuf[BUFSIZ]; 87 static int once = 0; 88 struct kvm_swap dummy; 89 90 if (once) 91 return (1); 92 93 if (kvm_getswapinfo(kd, &dummy, 1, 0) < 0) { 94 snprintf(msgbuf, sizeof(msgbuf), "systat: kvm_getswapinfo failed"); 95 error("%s", msgbuf); 96 return (0); 97 } 98 99 once = 1; 100 return (1); 101 } 102 103 static struct kvm_swap kvmsw[16]; 104 static int kvnsw; 105 106 void 107 fetchswap(void) 108 { 109 kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0); 110 } 111 112 void 113 labelswap(void) 114 { 115 char *header; 116 int row, i; 117 118 fetchswap(); 119 120 row = 0; 121 wmove(wnd, row, 0); wclrtobot(wnd); 122 header = getbsize(&hlen, &blocksize); 123 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s", 124 "Disk", hlen, header, "Used", 125 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100"); 126 127 for (i = 0; i < kvnsw; ++i) { 128 mvwprintw(wnd, i + 1, 0, "%-5s", kvmsw[i].ksw_devname); 129 } 130 } 131 132 void 133 showswap(void) 134 { 135 int i; 136 int pagesize = getpagesize(); 137 138 #define CONVERT(v) ((int)((quad_t)(v) * pagesize / blocksize)) 139 140 for (i = 0; i <= kvnsw; ++i) { 141 int _col = 5; 142 int count; 143 144 if (i == kvnsw) { 145 if (kvnsw == 1) 146 break; 147 mvwprintw( 148 wnd, 149 i + 1, 150 _col, 151 "%-5s", 152 "Total" 153 ); 154 _col += 5; 155 } 156 if (kvmsw[i].ksw_total == 0) { 157 mvwprintw( 158 wnd, 159 i + 1, 160 _col + 5, 161 "(swap not configured)" 162 ); 163 continue; 164 } 165 166 mvwprintw( 167 wnd, 168 i + 1, 169 _col, 170 "%*d", 171 hlen, 172 CONVERT(kvmsw[i].ksw_total) 173 ); 174 _col += hlen; 175 176 mvwprintw( 177 wnd, 178 i + 1, 179 _col, 180 "%9d ", 181 CONVERT(kvmsw[i].ksw_used) 182 ); 183 184 count = (int)((double)kvmsw[i].ksw_used * 49.999 / 185 (double)kvmsw[i].ksw_total); 186 187 while (count >= 0) { 188 waddch(wnd, 'X'); 189 --count; 190 } 191 } 192 } 193