swap.c revision 1.16
1 /* $NetBSD: swap.c,v 1.16 2003/08/07 11:16:00 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1992, 1993 5 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1997 Matthew R. Green. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by the University of 46 * California, Berkeley and its contributors. 47 * 4. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 #ifndef lint 66 #if 0 67 static char sccsid[] = "@(#)swap.c 8.3 (Berkeley) 4/29/95"; 68 #endif 69 __RCSID("$NetBSD: swap.c,v 1.16 2003/08/07 11:16:00 agc Exp $"); 70 #endif /* not lint */ 71 72 #include <sys/param.h> 73 #include <sys/swap.h> 74 75 #include <errno.h> 76 #include <stdio.h> 77 #include <stdlib.h> 78 #include <string.h> 79 #include <unistd.h> 80 81 #include "systat.h" 82 #include "extern.h" 83 84 void showspace(char *header, int hlen, long blocksize); 85 86 static long blocksize; 87 static int hlen, nswap, rnswap; 88 static int first = 1; 89 static struct swapent *swap_devices; 90 91 WINDOW * 92 openswap(void) 93 { 94 95 return (subwin(stdscr, -1, 0, 5, 0)); 96 } 97 98 void 99 closeswap(WINDOW *w) 100 { 101 102 if (w == NULL) 103 return; 104 wclear(w); 105 wrefresh(w); 106 delwin(w); 107 } 108 109 /* do nothing */ 110 int 111 initswap(void) 112 { 113 114 return (1); 115 } 116 117 void 118 fetchswap(void) 119 { 120 int update_label = 0; 121 122 first = 0; 123 nswap = swapctl(SWAP_NSWAP, 0, 0); 124 if (nswap < 0) 125 error("error: %s", strerror(errno)); 126 if (nswap == 0) 127 return; 128 update_label = (nswap != rnswap); 129 130 if (swap_devices) 131 (void)free(swap_devices); 132 if ((swap_devices = malloc(nswap * sizeof(*swap_devices))) == NULL) { 133 error("malloc failed"); 134 die(0); 135 } 136 137 if ((rnswap = swapctl(SWAP_STATS, (void *)swap_devices, nswap)) != nswap) { 138 error("swapctl failed"); 139 die(0); 140 } 141 142 if (update_label) 143 labelswap(); 144 } 145 146 void 147 labelswap(void) 148 { 149 char *header; 150 int row; 151 152 row = 0; 153 wmove(wnd, row, 0); 154 wclrtobot(wnd); 155 if (first) 156 fetchswap(); 157 if (nswap == 0) { 158 mvwprintw(wnd, row++, 0, "No swap"); 159 return; 160 } 161 header = getbsize(&hlen, &blocksize); 162 mvwprintw(wnd, row++, 0, "%-5s%*s%9s %55s", 163 "Disk", hlen, header, "Used", 164 "/0% /10% /20% /30% /40% /50% /60% /70% /80% /90% /100%"); 165 } 166 167 void 168 showswap(void) 169 { 170 int col, div, i, avail, used, xsize, free; 171 struct swapent *sep; 172 char *p; 173 174 div = blocksize / 512; 175 free = avail = 0; 176 for (sep = swap_devices, i = 0; i < nswap; i++, sep++) { 177 if (sep == NULL) 178 continue; 179 180 p = strrchr(sep->se_path, '/'); 181 p = p ? p+1 : sep->se_path; 182 183 mvwprintw(wnd, i + 1, 0, "%-5s", p); 184 185 col = 5; 186 mvwprintw(wnd, i + 1, col, "%*d", hlen, sep->se_nblks / div); 187 188 col += hlen; 189 xsize = sep->se_nblks; 190 used = sep->se_inuse; 191 avail += xsize; 192 free += xsize - used; 193 mvwprintw(wnd, i + 1, col, "%9d ", used / div); 194 wclrtoeol(wnd); 195 whline(wnd, 'X', (100 * used / xsize + 1) / 2); 196 } 197 /* do total if necessary */ 198 if (nswap > 1) { 199 used = avail - free; 200 mvwprintw(wnd, i + 1, 0, "%-5s%*d%9d ", 201 "Total", hlen, avail / div, used / div); 202 wclrtoeol(wnd); 203 whline(wnd, 'X', (100 * used / avail + 1) / 2); 204 } 205 } 206
Indexes created Fri Sep 26 20:09:58 GMT 2025