| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #ifndef lint |
| 8 | static char sccsid[] = "@(#)pigs.c 5.7 (Berkeley) %G%"; |
| 9 | #endif not lint |
| 10 | |
| 11 | /* |
| 12 | * Pigs display from Bill Reeves at Lucasfilm |
| 13 | */ |
| 14 | |
| 15 | #include "systat.h" |
| 16 | #include <sys/dir.h> |
| 17 | #include <sys/time.h> |
| 18 | #include <sys/proc.h> |
| 19 | #include <pwd.h> |
| 20 | #include <paths.h> |
| 21 | |
| 22 | WINDOW * |
| 23 | openpigs() |
| 24 | { |
| 25 | return (subwin(stdscr, LINES-5-1, 0, 5, 0)); |
| 26 | } |
| 27 | |
| 28 | closepigs(w) |
| 29 | WINDOW *w; |
| 30 | { |
| 31 | if (w == NULL) |
| 32 | return; |
| 33 | wclear(w); |
| 34 | wrefresh(w); |
| 35 | delwin(w); |
| 36 | } |
| 37 | |
| 38 | int maxind; |
| 39 | int factor; |
| 40 | float total; |
| 41 | struct passwd *getpwuid(); |
| 42 | char pidname[30]; |
| 43 | long stime[CPUSTATES]; |
| 44 | double idle; |
| 45 | |
| 46 | showpigs() |
| 47 | { |
| 48 | register short auid; |
| 49 | register int i, j, y; |
| 50 | register float max; |
| 51 | register struct p_times *ptptr; |
| 52 | struct p_times temppt; |
| 53 | register struct users *knptr; |
| 54 | char *getpname(), *pnamp; |
| 55 | |
| 56 | if (pt == NULL) |
| 57 | return; |
| 58 | /* Accumulate the percent of cpu per user. */ |
| 59 | ptptr = pt; |
| 60 | numprocs = 0; |
| 61 | total = 0.0; |
| 62 | for (i = 0; i < nproc; i++) { |
| 63 | /* discard inactive processes */ |
| 64 | if (ptptr->pt_uid == -1) { |
| 65 | ptptr++; |
| 66 | continue; |
| 67 | } |
| 68 | /* Accumulate the percentage. */ |
| 69 | total += ptptr->pt_pctcpu; |
| 70 | numprocs++; |
| 71 | ptptr++; |
| 72 | } |
| 73 | |
| 74 | pt[numprocs].pt_pctcpu = idle; |
| 75 | total += idle; |
| 76 | pt[numprocs].pt_uid = -1; |
| 77 | pt[numprocs].pt_pid = -1; |
| 78 | pt[numprocs].pt_pp = NULL; |
| 79 | |
| 80 | if (total < 1.0) |
| 81 | total = 1.0; |
| 82 | factor = 50.0/total; |
| 83 | |
| 84 | /* Find the top few by executing a "bubble pass" ten times. */ |
| 85 | y = numprocs + 1; |
| 86 | if (y > wnd->_maxy-1) |
| 87 | y = wnd->_maxy-1; |
| 88 | for (i = 0; i < y; i++) { |
| 89 | ptptr = &pt[i]; |
| 90 | max = -10000.0; |
| 91 | maxind = i; |
| 92 | for (j = i; j < numprocs + 1; j++) { |
| 93 | if (ptptr->pt_pctcpu > max) { |
| 94 | max = ptptr->pt_pctcpu; |
| 95 | maxind = j; |
| 96 | } |
| 97 | ptptr++; |
| 98 | } |
| 99 | if (maxind != i) { |
| 100 | temppt = pt[i]; |
| 101 | pt[i] = pt[maxind]; |
| 102 | pt[maxind] = temppt; |
| 103 | } |
| 104 | } |
| 105 | y = 1; |
| 106 | ptptr = pt; |
| 107 | i = numprocs + 1; |
| 108 | if (i > wnd->_maxy-1) |
| 109 | i = wnd->_maxy-1; |
| 110 | for (; i > 0 && ptptr->pt_pctcpu > 0.01; i--) { |
| 111 | /* Find the user's name. */ |
| 112 | knptr = known; |
| 113 | auid = ptptr->pt_uid; |
| 114 | for (j = numknown - 1; j >= 0; j--) { |
| 115 | if (knptr->k_uid == auid) { |
| 116 | namp = knptr->k_name; |
| 117 | break; |
| 118 | } |
| 119 | knptr++; |
| 120 | } |
| 121 | if (j < 0) { |
| 122 | if (numknown < 30) { |
| 123 | knptr = &known[numknown]; |
| 124 | namp = strncpy(knptr->k_name, |
| 125 | getpwuid(auid)->pw_name, 15); |
| 126 | knptr->k_name[15] = '\0'; |
| 127 | knptr->k_uid = auid; |
| 128 | numknown++; |
| 129 | } else |
| 130 | namp = getpwuid(auid)-> pw_name; |
| 131 | } |
| 132 | pnamp = getpname(ptptr->pt_pid, ptptr->pt_pp); |
| 133 | wmove(wnd, y, 0); |
| 134 | wclrtoeol(wnd); |
| 135 | mvwaddstr(wnd, y, 0, namp); |
| 136 | sprintf(pidname, "%10.10s", pnamp); |
| 137 | mvwaddstr(wnd, y, 9, pidname); |
| 138 | wmove(wnd, y++, 20); |
| 139 | for (j = ptptr->pt_pctcpu*factor + 0.5; j > 0; j--) |
| 140 | waddch(wnd, 'X'); |
| 141 | ptptr++; |
| 142 | } |
| 143 | wmove(wnd, y, 0); wclrtobot(wnd); |
| 144 | } |
| 145 | |
| 146 | static struct nlist nlst[] = { |
| 147 | #define X_PROC 0 |
| 148 | { "_proc" }, |
| 149 | #define X_NPROC 1 |
| 150 | { "_nproc" }, |
| 151 | #define X_USRPTMAP 2 |
| 152 | { "_Usrptmap" }, |
| 153 | #define X_USRPT 3 |
| 154 | { "_usrpt" }, |
| 155 | #define X_CPTIME 4 |
| 156 | { "_cp_time" }, |
| 157 | { "" } |
| 158 | }; |
| 159 | |
| 160 | initpigs() |
| 161 | { |
| 162 | if (nlst[X_PROC].n_type == 0) { |
| 163 | nlist(_PATH_UNIX, nlst); |
| 164 | if (nlst[X_PROC].n_type == 0) { |
| 165 | error("namelist on %s failed", _PATH_UNIX); |
| 166 | return(0); |
| 167 | } |
| 168 | } |
| 169 | if (procp == NULL) { |
| 170 | procp = getw(nlst[X_PROC].n_value); |
| 171 | nproc = getw(nlst[X_NPROC].n_value); |
| 172 | } |
| 173 | if (kprocp == NULL) |
| 174 | kprocp = (struct proc *)calloc(nproc, sizeof (struct proc)); |
| 175 | if (usrpt != NULL) |
| 176 | return(1); |
| 177 | usrpt = (struct pte *)nlst[X_USRPT].n_value; |
| 178 | Usrptma = (struct pte *)nlst[X_USRPTMAP].n_value; |
| 179 | if (pt == NULL) |
| 180 | pt = (struct p_times *)calloc(nproc, sizeof (struct p_times)); |
| 181 | lseek(kmem, (long)nlst[X_CPTIME].n_value, L_SET); |
| 182 | read(kmem, stime, sizeof stime); |
| 183 | return(1); |
| 184 | } |
| 185 | |
| 186 | fetchpigs() |
| 187 | { |
| 188 | register int i; |
| 189 | register struct p_times *prt; |
| 190 | register float time; |
| 191 | register struct proc *pp; |
| 192 | long ctime[CPUSTATES]; |
| 193 | double t; |
| 194 | |
| 195 | if (nlst[X_PROC].n_type == 0) |
| 196 | return; |
| 197 | if (kprocp == NULL) { |
| 198 | kprocp = (struct proc *)calloc(nproc, sizeof (struct proc)); |
| 199 | if (kprocp == NULL) |
| 200 | return; |
| 201 | } |
| 202 | if (pt == NULL) { |
| 203 | pt = (struct p_times *)calloc(nproc, sizeof (struct p_times)); |
| 204 | if (pt == NULL) |
| 205 | return; |
| 206 | } |
| 207 | prt = pt; |
| 208 | lseek(kmem, procp, L_SET); |
| 209 | read(kmem, kprocp, sizeof (struct proc) * nproc); |
| 210 | for (i = 0, pp = kprocp; i < nproc; i++, pp++) { |
| 211 | time = pp->p_time; |
| 212 | if (time == 0 || (pp->p_flag & SLOAD) == 0) |
| 213 | continue; |
| 214 | prt->pt_pid = pp->p_pid; |
| 215 | prt->pt_pp = pp; |
| 216 | prt->pt_pctcpu = ((double) pp->p_pctcpu / fscale) / |
| 217 | (1.0 - exp(time * lccpu)); |
| 218 | prt->pt_uid = pp->p_uid; |
| 219 | prt++; |
| 220 | } |
| 221 | for (; prt < &pt[nproc]; prt++) |
| 222 | prt->pt_uid = -1; |
| 223 | lseek(kmem, (long)nlst[X_CPTIME].n_value, L_SET); |
| 224 | read(kmem, ctime, sizeof ctime); |
| 225 | t = 0; |
| 226 | for (i = 0; i < CPUSTATES; i++) |
| 227 | t += ctime[i] - stime[i]; |
| 228 | if (t == 0.0) |
| 229 | t = 1.0; |
| 230 | idle = (ctime[CP_IDLE] - stime[CP_IDLE]) / t; |
| 231 | for (i = 0; i < CPUSTATES; i++) |
| 232 | stime[i] = ctime[i]; |
| 233 | } |
| 234 | |
| 235 | labelpigs() |
| 236 | { |
| 237 | wmove(wnd, 0, 0); wclrtoeol(wnd); |
| 238 | mvwaddstr(wnd, 0, 20, |
| 239 | "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); |
| 240 | } |