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 * 59 openswap(void) 60 { 61 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 62 } 63 64 void 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 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 104 fetchswap(void) 105 { 106 kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0); 107 } 108 109 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 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