usr/src/cmd/csh/sh.time.c

   1 /*
   2  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
   7 /*        All Rights Reserved   */
   8
   9 /*
  10  * Copyright (c) 1980 Regents of the University of California.
  11  * All rights reserved. The Berkeley Software License Agreement
  12  * specifies the terms and conditions for redistribution.
  13  */
  14
  15 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 #include "sh.h"
  18 #include "sh.tconst.h"
  19
  20 void ruadd(struct rusage *ru, struct rusage *ru2);
  21 void prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
  22         struct timeval *b);
  23 void pdeltat(struct timeval *t1, struct timeval *t0);
  24 void tvadd(struct timeval *tsum, struct timeval *t0);
  25 void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0);
  26
  27 /*
  28  * C Shell - routines handling process timing and niceing
  29  */
  30
  31 void
  32 settimes(void)
  33 {
  34         struct rusage ruch;
  35
  36 #ifdef TRACE
  37         tprintf("TRACE- settimes()\n");
  38 #endif
  39         (void) gettimeofday(&time0, NULL);
  40         (void) getrusage(RUSAGE_SELF, &ru0);
  41         (void) getrusage(RUSAGE_CHILDREN, &ruch);
  42         ruadd(&ru0, &ruch);
  43 }
  44
  45 /*
  46  * dotime is only called if it is truly a builtin function and not a
  47  * prefix to another command
  48  */
  49 void
  50 dotime(void)
  51 {
  52         struct timeval timedol;
  53         struct rusage ru1, ruch;
  54
  55 #ifdef TRACE
  56         tprintf("TRACE- dotime()\n");
  57 #endif
  58         (void) getrusage(RUSAGE_SELF, &ru1);
  59         (void) getrusage(RUSAGE_CHILDREN, &ruch);
  60         ruadd(&ru1, &ruch);
  61         (void) gettimeofday(&timedol, NULL);
  62         prusage(&ru0, &ru1, &timedol, &time0);
  63 }
  64
  65 /*
  66  * donice is only called when it's on the line by itself or with a +- value
  67  */
  68 void
  69 donice(tchar **v)
  70 {
  71         tchar *cp;
  72         int nval;
  73
  74 #ifdef TRACE
  75         tprintf("TRACE- donice()\n");
  76 #endif
  77         v++;
  78         cp = *v++;
  79         if (cp == 0) {
  80                 nval = 4;
  81         } else if (*v == 0 && (cp[0] == '+' || cp[0] == '-')) {
  82                 nval = getn(cp);
  83         }
  84         (void) setpriority(PRIO_PROCESS, 0, nval);
  85 }
  86
  87 void
  88 ruadd(struct rusage *ru, struct rusage *ru2)
  89 {
  90         long *lp, *lp2;
  91         int cnt;
  92         /*
  93          * The SunOS 4.x <sys/rusage.h> has ru_first and ru_last #defines
  94          * as below.
  95          * The SVR4/POSIX <sys/resource.h> does not have these defined for
  96          * struct rusage
  97          * The #defines below are here so that the original csh logic
  98          * for ruadd remains clear now that there is no longer a private copy
  99          * of the old <sys/resource.h>
 100          */
 101 #define ru_first ru_ixrss
 102 #define ru_last ru_nivcsw
 103
 104 #ifdef TRACE
 105         tprintf("TRACE- ruadd()\n");
 106 #endif
 107         tvadd(&ru->ru_utime, &ru2->ru_utime);
 108         tvadd(&ru->ru_stime, &ru2->ru_stime);
 109         if (ru2->ru_maxrss > ru->ru_maxrss) {
 110                 ru->ru_maxrss = ru2->ru_maxrss;
 111         }
 112         cnt = &ru->ru_last - &ru->ru_first + 1;
 113         lp = &ru->ru_first;
 114         lp2 = &ru2->ru_first;
 115         do {
 116                 *lp++ += *lp2++;
 117         } while (--cnt > 0);
 118 }
 119
 120 void
 121 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
 122         struct timeval *b)
 123 {
 124 #define pgtok(p)        ((p * pgsize) / 1024)
 125         static int      pgsize;
 126
 127         time_t t =
 128             (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
 129             (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
 130             (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
 131             (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
 132         tchar *cp;
 133         int i;
 134         struct varent *vp = adrof(S_time);
 135         int ms =
 136             (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
 137
 138 #ifdef TRACE
 139         tprintf("TRACE- prusage()\n");
 140 #endif
 141         if (pgsize == 0) {
 142                 pgsize = getpagesize();
 143         }
 144
 145         cp = S_USAGEFORMAT;     /* "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww" */
 146         if (vp && vp->vec[0] && vp->vec[1]) {
 147                 cp = vp->vec[1];
 148         }
 149         for (; *cp; cp++) {
 150                 if (*cp != '%') {
 151                         Putchar(*cp);
 152                 } else if (cp[1]) {
 153                         switch (*++cp) {
 154
 155                         case 'U':
 156                                 pdeltat(&r1->ru_utime, &r0->ru_utime);
 157                                 break;
 158
 159                         case 'S':
 160                                 pdeltat(&r1->ru_stime, &r0->ru_stime);
 161                                 break;
 162
 163                         case 'E':
 164                                 psecs_int(ms / 100);
 165                                 break;
 166
 167                         case 'P':
 168                                 printf("%d%%", (int)(t * 100 /
 169                                     ((ms ? ms : 1))));
 170                                 break;
 171
 172                         case 'W':
 173                                 i = r1->ru_nswap - r0->ru_nswap;
 174                                 printf("%d", i);
 175                                 break;
 176
 177                         case 'X':
 178                                 printf("%d", t == 0 ? 0 :
 179                                     pgtok((r1->ru_ixrss - r0->ru_ixrss) / t));
 180                                 break;
 181
 182                         case 'D':
 183                                 printf("%d", t == 0 ? 0 :
 184                                     pgtok((r1->ru_idrss + r1->ru_isrss-
 185                                     (r0->ru_idrss + r0->ru_isrss)) / t));
 186                                 break;
 187
 188                         case 'K':
 189                                 printf("%d", t == 0 ? 0 :
 190                                     pgtok(((r1->ru_ixrss + r1->ru_isrss +
 191                                     r1->ru_idrss) - (r0->ru_ixrss +
 192                                     r0->ru_idrss + r0->ru_isrss)) / t));
 193                                 break;
 194
 195                         case 'M':
 196                                 printf("%d", r1->ru_maxrss / 2);
 197                                 break;
 198
 199                         case 'F':
 200                                 printf("%d", r1->ru_majflt - r0->ru_majflt);
 201                                 break;
 202
 203                         case 'R':
 204                                 printf("%d", r1->ru_minflt - r0->ru_minflt);
 205                                 break;
 206
 207                         case 'I':
 208                                 printf("%d", r1->ru_inblock - r0->ru_inblock);
 209                                 break;
 210
 211                         case 'O':
 212                                 printf("%d", r1->ru_oublock - r0->ru_oublock);
 213                                 break;
 214                         }
 215                 }
 216         }
 217         Putchar('\n');
 218 #undef  pgtok
 219 }
 220
 221 void
 222 pdeltat(struct timeval *t1, struct timeval *t0)
 223 {
 224         struct timeval td;
 225
 226 #ifdef TRACE
 227         tprintf("TRACE- pdeltat()\n");
 228 #endif
 229         tvsub(&td, t1, t0);
 230         /* change printf formats */
 231         printf("%d.%01d", td.tv_sec, td.tv_usec / 100000);
 232 }
 233
 234 void
 235 tvadd(struct timeval *tsum, struct timeval *t0)
 236 {
 237
 238 #ifdef TRACE
 239         tprintf("TRACE- tvadd()\n");
 240 #endif
 241         tsum->tv_sec += t0->tv_sec;
 242         tsum->tv_usec += t0->tv_usec;
 243         if (tsum->tv_usec > 1000000) {
 244                 tsum->tv_sec++;
 245                 tsum->tv_usec -= 1000000;
 246         }
 247 }
 248
 249 void
 250 tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0)
 251 {
 252
 253 #ifdef TRACE
 254         tprintf("TRACE- tvsub()\n");
 255 #endif
 256         tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
 257         tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
 258         if (tdiff->tv_usec < 0) {
 259                 tdiff->tv_sec--;
 260                 tdiff->tv_usec += 1000000;
 261         }
 262 }