Adds the '-p' option to make time(1) output POSIX.2 compliant.
Updates the manpage as well. I've rewritten the patch as it was for 2.2.7. It can probably be put into 3.1-STABLE as well. PR: bin/10515 Submitted by: Jens Schweikhardt <schweikh@noc.dfn.de>
This commit is contained in:
Ollivier Robert
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6fe7bbc584
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844338c286
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=44640
@ -39,7 +39,7 @@
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.Nd time command execution
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.Sh SYNOPSIS
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.Nm
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.Op Fl al
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.Op Fl alp
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.Op Fl o Ar file
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.Ar command
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.Sh DESCRIPTION
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@ -60,10 +60,9 @@ finishes,
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writes to the standard error stream,
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(in seconds):
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the total time elapsed,
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time consumed by system overhead,
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and the time used to execute the
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the time used to execute the
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.Ar command
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process.
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process and the time consumed by system overhead.
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.Pp
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Available options:
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.Bl -tag -width Ds
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@ -84,22 +83,44 @@ instead of stderr. If
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exists and the
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.Fl a
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flag is not specified, the file will be overwritten.
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.It Fl p
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Makes
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.Nm
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output POSIX.2 compliant (each time is printed on its own line).
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.El
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.Pp
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The
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.Xr csh 1
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has its own and syntactically different builtin version of
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Most shells (including
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.Xr csh 1 )
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have their own and syntactically different builtin version of
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.Nm time .
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The command described here
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is available as
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.Pa /usr/bin/time
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to
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.Xr csh
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users.
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to users of those shells.
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.Sh DIAGNOSTICS
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If
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.Ar command
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could be timed successfully, its exit status is returned. In case
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.Ar command
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terminated abnormally, a warning message is output to stderr.
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If the
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.Ar command
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was found but could not be run, the exit status is 126.
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If no
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.Ar command
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could be found at all, the exit status is 127.
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If
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.Nm
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encounters any other error, the exit status is between 1 and 125
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included.
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.Sh SEE ALSO
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.Xr csh 1 ,
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.Xr getrusage 2 ,
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.Xr wait 2
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.Sh STANDARDS
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The
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.Nm
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utility is expected to conform to ISO/IEC 9945-2:1993 (``POSIX'').
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.Sh HISTORY
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A
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.Nm
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@ -42,7 +42,7 @@ static const char copyright[] =
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static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id: time.c,v 1.11 1998/08/24 10:16:59 cracauer Exp $";
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"$Id: time.c,v 1.12 1998/10/13 14:52:32 des Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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@ -55,6 +55,7 @@ static const char rcsid[] =
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#include <err.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <signal.h>
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@ -71,15 +72,15 @@ main(argc, argv)
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extern int optind;
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register int pid;
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int aflag, ch, lflag, status;
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int aflag, ch, lflag, status, pflag;
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struct timeval before, after;
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struct rusage ru;
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FILE *out = stderr;
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char *ofn = NULL;
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int exitonsig = 0; /* Die with same signal as child */
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aflag = lflag = 0;
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while ((ch = getopt(argc, argv, "alo:")) != -1)
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aflag = lflag = pflag = 0;
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while ((ch = getopt(argc, argv, "alo:p")) != -1)
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switch((char)ch) {
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case 'a':
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aflag = 1;
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@ -90,6 +91,9 @@ main(argc, argv)
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case 'o':
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ofn = optarg;
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break;
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case 'p':
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pflag = 1;
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break;
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case '?':
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default:
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usage();
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@ -111,9 +115,13 @@ main(argc, argv)
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err(1, "time");
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/* NOTREACHED */
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case 0: /* child */
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errno = 0;
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execvp(*argv, argv);
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warn("%s", *argv);
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_exit(1);
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if (errno == ENOENT)
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_exit(127); /* POSIX: utility could not be found */
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else
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_exit(126); /* POSIX: utility could not be invoked */
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/* NOTREACHED */
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}
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/* parent */
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@ -129,11 +137,24 @@ main(argc, argv)
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after.tv_usec -= before.tv_usec;
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if (after.tv_usec < 0)
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after.tv_sec--, after.tv_usec += 1000000;
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fprintf(out, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000);
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fprintf(out, "%9ld.%02ld user ",
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ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
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fprintf(out, "%9ld.%02ld sys\n",
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ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
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if (pflag) {
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/* POSIX wants output that must look like
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"real %f\nuser %f\nsys %f\n" and requires
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at least two digits after the radix. */
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fprintf(out, "real %ld.%02ld\n",
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after.tv_sec, after.tv_usec/10000);
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fprintf(out, "user %ld.%02ld\n",
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ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
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fprintf(out, "sys %ld.%02ld\n",
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ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
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} else {
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fprintf(out, "%9ld.%02ld real ",
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after.tv_sec, after.tv_usec/10000);
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fprintf(out, "%9ld.%02ld user ",
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ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
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fprintf(out, "%9ld.%02ld sys\n",
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ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
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}
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if (lflag) {
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int hz = getstathz();
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u_long ticks;
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@ -189,7 +210,7 @@ main(argc, argv)
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static void
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usage()
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{
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fprintf(stderr, "usage: time [-al] [-o file] command\n");
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fprintf(stderr, "usage: time [-alp] [-o file] command\n");
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exit(1);
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}
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