swap.c revision 1.20
1 /* $NetBSD: swap.c,v 1.20 2008/05/30 02:29:37 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Matthew R. Green. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /*- 30 * Copyright (c) 1980, 1992, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 1. Redistributions of source code must retain the above copyright 37 * notice, this list of conditions and the following disclaimer. 38 * 2. Redistributions in binary form must reproduce the above copyright 39 * notice, this list of conditions and the following disclaimer in the 40 * documentation and/or other materials provided with the distribution. 41 * 3. Neither the name of the University nor the names of its contributors 42 * may be used to endorse or promote products derived from this software 43 * without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57 58 #include <sys/cdefs.h> 59 #ifndef lint 60 #if 0 61 static char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95"; 62 #endif 63 __RCSID("$NetBSD: swap.c,v 1.20 2008/05/30 02:29:37 mrg Exp $"); 64 #endif /* not lint */ 65 66 #include <sys/param.h> 67 #include <sys/swap.h> 68 69 #include <errno.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <unistd.h> 74 75 #include "systat.h" 76 #include "extern.h" 77 78 void showspace(char *header, int hlen, long blocksize); 79 80 static long blocksize; 81 static int hlen, nswap, rnswap; 82 static int first = 1; 83 static struct swapent *swap_devices; 84 85 WINDOW * 86 openswap(void) 87 { 88 89 return (subwin(stdscr, -1, 0, 5, 0)); 90 } 91 92 void 93 closeswap(WINDOW *w) 94 { 95 96 if (w == NULL) 97 return; 98 wclear(w); 99 wrefresh(w); 100 delwin(w); 101 } 102 103 /* do nothing */ 104 int 105 initswap(void) 106 { 107 108 return (1); 109 } 110 111 void 112 fetchswap(void) 113 { 114 int update_label = 0; 115 116 first = 0; 117 nswap = swapctl(SWAP_NSWAP, 0, 0); 118 if (nswap < 0) 119 error("error: %s", strerror(errno)); 120 if (nswap == 0) 121 return; 122 update_label = (nswap != rnswap); 123 124 if (swap_devices) 125 (void)free(swap_devices); 126 if ((swap_devices = malloc(nswap * sizeof(*swap_devices))) == NULL) { 127 error("malloc failed"); 128 die(0); 129 } 130 131 if ((rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap)) != nswap) { 132 error("swapctl failed"); 133 die(0); 134 } 135 136 if (update_label) 137 labelswap(); 138 } 139 140 void 141 labelswap(void) 142 { 143 char *header; 144 int row; 145 146 row = 0; 147 wmove(wnd, row, 0); 148 wclrtobot(wnd); 149 if (first) 150 fetchswap(); 151 if (nswap == 0) { 152 mvwprintw(wnd, row++, 0, "No swap"); 153 return; 154 } 155 header = getbsize(&hlen, &blocksize); 156 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s", 157 "Disk", hlen, header, "Used", 158 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100%"); 159 } 160 161 void 162 showswap(void) 163 { 164 int col, blk_div, i, avail, used, xsize, swp_free; 165 struct swapent *sep; 166 char *p; 167 168 blk_div = blocksize / 512; 169 swp_free = avail = 0; 170 for (sep = swap_devices, i = 0; i < nswap; i++, sep++) { 171 p = strrchr(sep->se_path, '/'); 172 p = p ? p+1 : sep->se_path; 173 174 mvwprintw(wnd, i + 1, 0, "%-5s", p); 175 176 col = 5; 177 mvwprintw(wnd, i + 1, col, "%*d", hlen, sep->se_nblks / blk_div); 178 179 col += hlen; 180 xsize = sep->se_nblks; 181 used = sep->se_inuse; 182 avail += xsize; 183 swp_free += xsize - used; 184 mvwprintw(wnd, i + 1, col, "%9d ", used / blk_div); 185 wclrtoeol(wnd); 186 whline(wnd, 'X', (100 * used / xsize + 1) / 2); 187 } 188 /* do total if necessary */ 189 if (nswap > 1) { 190 used = avail - swp_free; 191 mvwprintw(wnd, i + 1, 0, "%-5s%*d%9d ", 192 "Total", hlen, avail / blk_div, used / blk_div); 193 wclrtoeol(wnd); 194 whline(wnd, 'X', (100 * used / avail + 1) / 2); 195 } 196 } 197
Indexes created Fri Sep 26 08:10:20 GMT 2025