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 1.3 2003/10/04 20:36:51 hmp 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 extern char *getbsize(int *headerlenp, long *blocksizep); 59 void showspace(char *header, int hlen, long blocksize); 60 61 kvm_t *kd; 62 63 static long blocksize; 64 static int hlen; 65 66 WINDOW * 67 openswap(void) 68 { 69 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 70 } 71 72 void 73 closeswap(WINDOW *w) 74 { 75 if (w == NULL) 76 return; 77 wclear(w); 78 wrefresh(w); 79 delwin(w); 80 } 81 82 /* 83 * The meat of all the swap stuff is stolen from pstat(8)'s 84 * swapmode(), which is based on a program called swapinfo written by 85 * Kevin Lahey <kml@rokkaku.atl.ga.us>. 86 */ 87 88 int 89 initswap(void) 90 { 91 int i; 92 char msgbuf[BUFSIZ]; 93 char *cp; 94 static int once = 0; 95 u_long ptr; 96 struct kvm_swap dummy; 97 98 if (once) 99 return (1); 100 101 if (kvm_getswapinfo(kd, &dummy, 1, 0) < 0) { 102 snprintf(msgbuf, sizeof(msgbuf), "systat: kvm_getswapinfo failed"); 103 error("%s", msgbuf); 104 return (0); 105 } 106 107 once = 1; 108 return (1); 109 } 110 111 static struct kvm_swap kvmsw[16]; 112 static int kvnsw; 113 114 void 115 fetchswap(void) 116 { 117 kvnsw = kvm_getswapinfo(kd, kvmsw, 16, 0); 118 } 119 120 void 121 labelswap() 122 { 123 char *header, *p; 124 int row, i; 125 126 fetchswap(); 127 128 row = 0; 129 wmove(wnd, row, 0); wclrtobot(wnd); 130 header = getbsize(&hlen, &blocksize); 131 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s", 132 "Disk", hlen, header, "Used", 133 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100"); 134 135 for (i = 0; i < kvnsw; ++i) { 136 mvwprintw(wnd, i + 1, 0, "%-5s", kvmsw[i].ksw_devname); 137 } 138 } 139 140 void 141 showswap(void) 142 { 143 int i; 144 int pagesize = getpagesize(); 145 146 #define CONVERT(v) ((int)((quad_t)(v) * pagesize / blocksize)) 147 148 for (i = 0; i <= kvnsw; ++i) { 149 int col = 5; 150 int count; 151 152 if (i == kvnsw) { 153 if (kvnsw == 1) 154 break; 155 mvwprintw( 156 wnd, 157 i + 1, 158 col, 159 "%-5s", 160 "Total" 161 ); 162 col += 5; 163 } 164 if (kvmsw[i].ksw_total == 0) { 165 mvwprintw( 166 wnd, 167 i + 1, 168 col + 5, 169 "(swap not configured)" 170 ); 171 continue; 172 } 173 174 mvwprintw( 175 wnd, 176 i + 1, 177 col, 178 "%*d", 179 hlen, 180 CONVERT(kvmsw[i].ksw_total) 181 ); 182 col += hlen; 183 184 mvwprintw( 185 wnd, 186 i + 1, 187 col, 188 "%9d ", 189 CONVERT(kvmsw[i].ksw_used) 190 ); 191 192 count = (int)((double)kvmsw[i].ksw_used * 49.999 / 193 (double)kvmsw[i].ksw_total); 194 195 while (count >= 0) { 196 waddch(wnd, 'X'); 197 --count; 198 } 199 } 200 } 201