2.9BSD - /usr/src/cmd/time.c

   1: /* time command */
   2: 
   3: #include <stdio.h>
   4: #include <signal.h>
   5: #include <sys/types.h>
   6: #include <sys/times.h>
   7: 
   8: extern int errno;
   9: extern char *sys_errlist[];
  10: 
  11: main(argc, argv)
  12: char **argv;
  13: {
  14:     struct tms buffer, obuffer;
  15:     int status;
  16:     register p;
  17:     time_t before, after;
  18: 
  19:     if(argc<=1)
  20:         exit(0);
  21:     time(&before);
  22:     p = fork();
  23:     if(p == -1) {
  24:         fprintf(stderr, "Try again.\n");
  25:         exit(1);
  26:     }
  27:     if(p == 0) {
  28:         execvp(argv[1], &argv[1]);
  29:         fprintf(stderr, "%s: %s\n", argv[1], sys_errlist[errno]);
  30:         exit(1);
  31:     }
  32:     signal(SIGINT, SIG_IGN);
  33:     signal(SIGQUIT, SIG_IGN);
  34:     times(&obuffer);
  35:     while(wait(&status) != p)
  36:         times(&obuffer);
  37:     time(&after);
  38:     if((status&0377) != 0)
  39:         fprintf(stderr,"Command terminated abnormally.\n");
  40:     times(&buffer);
  41:     fprintf(stderr,"\n");
  42:     printt("real", (after-before) * 60);
  43:     printt("user", buffer.tms_cutime - obuffer.tms_cutime);
  44:     printt("sys ", buffer.tms_cstime - obuffer.tms_cstime);
  45:     exit(status>>8);
  46: }
  47: 
  48: char quant[] = { 6, 10, 10, 6, 10, 6, 10, 10, 10 };
  49: char *pad  = "000      ";
  50: char *sep  = "\0\0.\0:\0:\0\0";
  51: char *nsep = "\0\0.\0 \0 \0\0";
  52: 
  53: printt(s, a)
  54: char *s;
  55: long a;
  56: {
  57:     char digit[9];
  58:     register i;
  59:     char c;
  60:     int nonzero;
  61: 
  62:     for(i=0; i<9; i++) {
  63:         digit[i] = a % quant[i];
  64:         a /= quant[i];
  65:     }
  66:     fprintf(stderr,s);
  67:     nonzero = 0;
  68:     while(--i>0) {
  69:         c = digit[i]!=0 ? digit[i]+'0':
  70:             nonzero ? '0':
  71:             pad[i];
  72:         fprintf(stderr,"%c",c);
  73:         nonzero |= digit[i];
  74:         c = nonzero?sep[i]:nsep[i];
  75:         fprintf(stderr,"%c",c);
  76:     }
  77:     fprintf(stderr,"\n");
  78: }

Defined functions

Defined variables