convert to 4.1c sys calls and directory layout

[unix-history] / usr / src / usr.bin / time / time.c

static  char *sccsid = "@(#)time.c      4.3 (Berkeley) %G%";

/*
* time
*/
#include <stdio.h>
#include <signal.h>
#include <sys/types.h>
#include <time.h>
#include <resource.h>

main(argc, argv)
       int argc;
       char **argv;
{
       int status;
       register int p;
       struct timeval before, after;
       struct rusage ru;

       if (argc<=1)
               exit(0);
       gettimeofday(&before, 0);
       p = fork();
       if (p < 0) {
               perror("time");
               exit(1);
       }
       if (p == 0) {
               execvp(argv[1], &argv[1]);
               perror(argv[1]);
               exit(1);
       }
       signal(SIGINT, SIG_IGN);
       signal(SIGQUIT, SIG_IGN);
       while (wait3(&status, 0, &ru) != p)
               ;
       gettimeofday(&after, 0);
       if ((status&0377) != 0)
               fprintf(stderr, "Command terminated abnormally.\n");
       after.tv_sec -= before.tv_sec;
       after.tv_usec -= before.tv_usec;
       if (after.tv_usec < 0)
               after.tv_sec--, after.tv_usec += 1000000;
       printt("real", &after);
       printt("user", &ru.ru_utime);
       printt("sys ", &ru.ru_stime);
       fprintf(stderr, "\n");
       exit (status>>8);
}

printt(s, tv)
       char *s;
       struct timeval *tv;
{

       fprintf(stderr, "%9d.%01d %s ", tv->tv_sec, tv->tv_usec/100000, s);
}