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Annotation of 43BSD/bin/time.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char *sccsid = "@(#)time.c      4.5 (Berkeley) 7/1/83";
        !             3: #endif
        !             4: 
        !             5: /*
        !             6:  * time
        !             7:  */
        !             8: #include <stdio.h>
        !             9: #include <signal.h>
        !            10: #include <sys/types.h>
        !            11: #include <sys/time.h>
        !            12: #include <sys/resource.h>
        !            13: 
        !            14: main(argc, argv)
        !            15:        int argc;
        !            16:        char **argv;
        !            17: {
        !            18:        int status;
        !            19:        register int p;
        !            20:        struct timeval before, after;
        !            21:        struct rusage ru;
        !            22: 
        !            23:        if (argc<=1)
        !            24:                exit(0);
        !            25:        gettimeofday(&before, 0);
        !            26:        p = fork();
        !            27:        if (p < 0) {
        !            28:                perror("time");
        !            29:                exit(1);
        !            30:        }
        !            31:        if (p == 0) {
        !            32:                execvp(argv[1], &argv[1]);
        !            33:                perror(argv[1]);
        !            34:                exit(1);
        !            35:        }
        !            36:        signal(SIGINT, SIG_IGN);
        !            37:        signal(SIGQUIT, SIG_IGN);
        !            38:        while (wait3(&status, 0, &ru) != p)
        !            39:                ;
        !            40:        gettimeofday(&after, 0);
        !            41:        if ((status&0377) != 0)
        !            42:                fprintf(stderr, "Command terminated abnormally.\n");
        !            43:        after.tv_sec -= before.tv_sec;
        !            44:        after.tv_usec -= before.tv_usec;
        !            45:        if (after.tv_usec < 0)
        !            46:                after.tv_sec--, after.tv_usec += 1000000;
        !            47:        printt("real", &after);
        !            48:        printt("user", &ru.ru_utime);
        !            49:        printt("sys ", &ru.ru_stime);
        !            50:        fprintf(stderr, "\n");
        !            51:        exit (status>>8);
        !            52: }
        !            53: 
        !            54: printt(s, tv)
        !            55:        char *s;
        !            56:        struct timeval *tv;
        !            57: {
        !            58: 
        !            59:        fprintf(stderr, "%9d.%01d %s ", tv->tv_sec, tv->tv_usec/100000, s);
        !            60: }

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