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 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifdef lint 39 static const char sccsid[] = "@(#)pigs.c 8.2 (Berkeley) 9/23/93"; 40 #endif 41 42 /* 43 * Pigs display from Bill Reeves at Lucasfilm 44 */ 45 46 #include <sys/param.h> 47 #include <sys/dkstat.h> 48 #include <sys/time.h> 49 #include <sys/user.h> 50 #include <sys/sysctl.h> 51 52 #include <curses.h> 53 #include <math.h> 54 #include <nlist.h> 55 #include <pwd.h> 56 #include <stdlib.h> 57 58 #include "extern.h" 59 #include "systat.h" 60 61 int compar __P((const void *, const void *)); 62 63 static int nproc; 64 static struct p_times { 65 float pt_pctcpu; 66 struct kinfo_proc *pt_kp; 67 } *pt; 68 69 static long stime[CPUSTATES]; 70 static int fscale; 71 static double lccpu; 72 73 WINDOW * 74 openpigs() 75 { 76 return (subwin(stdscr, LINES-5-1, 0, 5, 0)); 77 } 78 79 void 80 closepigs(w) 81 WINDOW *w; 82 { 83 if (w == NULL) 84 return; 85 wclear(w); 86 wrefresh(w); 87 delwin(w); 88 } 89 90 91 void 92 showpigs() 93 { 94 register int i, j, y, k; 95 float total; 96 int factor; 97 const char *uname, *pname; 98 char pidname[30]; 99 100 if (pt == NULL) 101 return; 102 /* Accumulate the percent of cpu per user. */ 103 total = 0.0; 104 for (i = 0; i <= nproc; i++) { 105 /* Accumulate the percentage. */ 106 total += pt[i].pt_pctcpu; 107 } 108 109 if (total < 1.0) 110 total = 1.0; 111 factor = 50.0/total; 112 113 qsort(pt, nproc + 1, sizeof (struct p_times), compar); 114 y = 1; 115 i = nproc + 1; 116 if (i > wnd->_maxy-1) 117 i = wnd->_maxy-1; 118 for (k = 0; i > 0 && pt[k].pt_pctcpu > 0.01; i--, y++, k++) { 119 if (pt[k].pt_kp == NULL) { 120 uname = ""; 121 pname = "<idle>"; 122 } 123 else { 124 uname = (char *) 125 user_from_uid(pt[k].pt_kp->ki_uid, 0); 126 pname = pt[k].pt_kp->ki_comm; 127 } 128 wmove(wnd, y, 0); 129 wclrtoeol(wnd); 130 mvwaddstr(wnd, y, 0, uname); 131 snprintf(pidname, sizeof(pidname), "%10.10s", pname); 132 mvwaddstr(wnd, y, 9, pidname); 133 wmove(wnd, y, 20); 134 for (j = pt[k].pt_pctcpu*factor + 0.5; j > 0; j--) 135 waddch(wnd, 'X'); 136 } 137 wmove(wnd, y, 0); wclrtobot(wnd); 138 } 139 140 int 141 initpigs() 142 { 143 fixpt_t ccpu; 144 size_t len; 145 int err; 146 147 len = sizeof(stime); 148 err = sysctlbyname("kern.cp_time", &stime, &len, NULL, 0); 149 if (err || len != sizeof(stime)) { 150 perror("kern.cp_time"); 151 return (0); 152 } 153 154 len = sizeof(ccpu); 155 err = sysctlbyname("kern.ccpu", &ccpu, &len, NULL, 0); 156 if (err || len != sizeof(ccpu)) { 157 perror("kern.ccpu"); 158 return (0); 159 } 160 161 len = sizeof(fscale); 162 err = sysctlbyname("kern.fscale", &fscale, &len, NULL, 0); 163 if (err || len != sizeof(fscale)) { 164 perror("kern.fscale"); 165 return (0); 166 } 167 168 lccpu = log((double) ccpu / fscale); 169 170 return(1); 171 } 172 173 void 174 fetchpigs() 175 { 176 int i; 177 float ftime; 178 float *pctp; 179 struct kinfo_proc *kpp; 180 long c_time[CPUSTATES]; 181 double t; 182 static int lastnproc = 0; 183 size_t len; 184 int err; 185 186 if ((kpp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc)) == NULL) { 187 error("%s", kvm_geterr(kd)); 188 if (pt) 189 free(pt); 190 return; 191 } 192 if (nproc > lastnproc) { 193 free(pt); 194 if ((pt = 195 malloc((nproc + 1) * sizeof(struct p_times))) == NULL) { 196 error("Out of memory"); 197 die(0); 198 } 199 } 200 lastnproc = nproc; 201 /* 202 * calculate %cpu for each proc 203 */ 204 for (i = 0; i < nproc; i++) { 205 pt[i].pt_kp = &kpp[i]; 206 pctp = &pt[i].pt_pctcpu; 207 ftime = kpp[i].ki_swtime; 208 if (ftime == 0 || (kpp[i].ki_sflag & PS_INMEM) == 0) 209 *pctp = 0; 210 else 211 *pctp = ((double) kpp[i].ki_pctcpu / 212 fscale) / (1.0 - exp(ftime * lccpu)); 213 } 214 /* 215 * and for the imaginary "idle" process 216 */ 217 len = sizeof(c_time); 218 err = sysctlbyname("kern.cp_time", &c_time, &len, NULL, 0); 219 if (err || len != sizeof(c_time)) { 220 perror("kern.cp_time"); 221 return; 222 } 223 t = 0; 224 for (i = 0; i < CPUSTATES; i++) 225 t += c_time[i] - stime[i]; 226 if (t == 0.0) 227 t = 1.0; 228 pt[nproc].pt_kp = NULL; 229 pt[nproc].pt_pctcpu = (c_time[CP_IDLE] - stime[CP_IDLE]) / t; 230 for (i = 0; i < CPUSTATES; i++) 231 stime[i] = c_time[i]; 232 } 233 234 void 235 labelpigs() 236 { 237 wmove(wnd, 0, 0); 238 wclrtoeol(wnd); 239 mvwaddstr(wnd, 0, 20, 240 "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); 241 } 242 243 int 244 compar(a, b) 245 const void *a, *b; 246 { 247 return (((const struct p_times *) a)->pt_pctcpu > 248 ((const struct p_times *) b)->pt_pctcpu)? -1: 1; 249 } 250