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Import NetBSD time(1)

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Change-Id: I035d21a926aa82434c24a84b914bd58ac064e66a
This commit is contained in:
David van Moolenbroek 2015-09-28 11:41:16 +00:00
parent d1e4d7ce7d
commit b7f0178aeb
10 changed files with 413 additions and 209 deletions
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2
minix/commands/Makefile
View file

@ -25,7 +25,7 @@ SUBDIR= add_route arp at backup \
slip spell sprofalyze sprofdiff srccrc \
svrctl swifi synctree sysenv \
tcpd tcpdp tcpstat telnet \
telnetd term termcap tget time \
telnetd term termcap tget \
truncate udpstat umount \
update version vol \
writeisofs fetch \

3
minix/commands/time/Makefile
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@ -1,3 +0,0 @@
PROG= time
.include <bsd.prog.mk>

32
minix/commands/time/time.1
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@ -1,32 +0,0 @@
.TH TIME 1
.SH NAME
time \- report how long a command takes
.SH SYNOPSIS
\fBtime [-C] \fIcommand\fR
.br
.de FL
.TP
\\fB\\$1\\fR
\\$2
..
.de EX
.TP 20
\\fB\\$1\\fR
# \\$2
..
The -C option tells time to report the cpu cycle counter
difference.
.SH EXAMPLES
.TP 20
.B time a.out
# Report how long \fIa.out\fR takes
.TP 20
.B time ls \-l *.c
# Report how long \fIls\fR takes
.SH DESCRIPTION
.PP
The command is executed and the real time, user time, and system time (in
hours, minutes, and seconds) are printed.
Shell scripts cannot be timed.
.SH "SEE ALSO"
.BR times (2).

172
minix/commands/time/time.c
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@ -1,172 +0,0 @@
/* time - time a command Authors: Andy Tanenbaum & Michiel Huisjes */
#define NEW 1
#include <sys/types.h>
#include <sys/times.h>
#include <limits.h>
#include <time.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <minix/minlib.h>
#include <stdio.h>
/* -DNEW prints time to 0.01 sec. */
#ifdef NEW
#define HUNDREDTHS 1
#endif
char **args;
char *name;
int digit_seen;
char a[] = " . \0";
int main(int argc, char **argv);
void print_time(clock_t t);
void twin(int n, char *p);
void execute(void);
int main(argc, argv)
int argc;
char *argv[];
{
int cycles = 0;
struct tms pre_buf, post_buf;
int status, pid;
struct tms dummy;
int start_time, end_time;
u64_t start_tsc, end_tsc, spent_tsc;
clock_t real_time;
int c;
if (argc == 1) exit(0);
while((c=getopt(argc, argv, "C")) != EOF) {
switch(c) {
case 'C':
cycles = 1;
break;
default:
fprintf(stderr, "usage: time [-C] <command>\n");
exit(1);
}
}
argv += optind;
argc -= optind;
args = &argv[0];
name = argv[0];
/* Get real time at start of run. */
start_time = times(&dummy);
read_tsc_64(&start_tsc);
/* Fork off child. */
if ((pid = fork()) < 0) {
std_err("Cannot fork\n");
exit(1);
}
if (pid == 0) execute();
/* Parent is the time program. Disable interrupts and wait. */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
do {
times(&pre_buf);
} while (wait(&status) != pid);
read_tsc_64(&end_tsc);
spent_tsc = end_tsc - start_tsc;
end_time = times(&dummy);
real_time = (end_time - start_time);
if ((status & 0377) != 0) std_err("Command terminated abnormally.\n");
times(&post_buf);
if(cycles) {
fprintf(stderr, "%qd tsc ", spent_tsc);
}
/* Print results. -DNEW enables time on one line to 0.01 sec */
#ifndef NEW
std_err("real ");
print_time(real_time);
std_err("\nuser ");
print_time(post_buf.tms_cutime - pre_buf.tms_cutime);
std_err("\nsys ");
print_time(post_buf.tms_cstime - pre_buf.tms_cstime);
std_err("\n");
#else
print_time(real_time);
std_err(" real");
print_time(post_buf.tms_cutime - pre_buf.tms_cutime);
std_err(" user");
print_time(post_buf.tms_cstime - pre_buf.tms_cstime);
std_err(" sys\n");
#endif
return((status & 0377) ? -1 : (status >> 8));
}
void print_time(t)
register clock_t t;
{
/* Print the time 't' in hours: minutes: seconds. 't' is in ticks. */
int hours, minutes, seconds, hundredths, i;
u32_t system_hz;
system_hz = (u32_t) sysconf(_SC_CLK_TCK);
digit_seen = 0;
for (i = 0; i < 8; i++) a[i] = ' ';
hours = (int) (t / ((clock_t) 3600 * system_hz));
t -= (clock_t) hours * 3600 * system_hz;
minutes = (int) (t / ((clock_t) 60 * system_hz));
t -= (clock_t) minutes * 60 * system_hz;
seconds = (int) (t / system_hz);
t -= (clock_t) seconds * system_hz;
hundredths = (int) (t * 100 / system_hz);
if (hours) {
twin(hours, &a[0]);
a[2] = ':';
}
if (minutes || digit_seen) {
twin(minutes, &a[3]);
a[5] = ':';
}
if (seconds || digit_seen)
twin(seconds, &a[6]);
else
a[7] = '0';
a[9] = hundredths / 10 + '0';
#ifdef HUNDREDTHS /* tenths used to be enough */
a[10] = hundredths % 10 + '0';
#endif
std_err(a);
}
void twin(n, p)
int n;
char *p;
{
char c1, c2;
c1 = (n / 10) + '0';
c2 = (n % 10) + '0';
if (digit_seen == 0 && c1 == '0') c1 = ' ';
*p++ = c1;
*p++ = c2;
if (n > 0) digit_seen = 1;
}
void execute()
{
execvp(name, args);
std_err("Cannot execute ");
std_err(name);
std_err("\n");
exit(-1);
}

2
usr.bin/Makefile
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@ -25,7 +25,7 @@ SUBDIR= asa \
\
sdiff sed seq shar shlock \
shuffle sort split stat su \
tail tee tic touch tput \
tail tee tic time touch tput \
tr true tsort tty ul uname unexpand unifdef \
uniq units unvis unzip users \
uudecode uuencode uuidgen vis \

16
usr.bin/time/Makefile Normal file
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@ -0,0 +1,16 @@
# $NetBSD: Makefile,v 1.9 2011/08/28 08:24:42 christos Exp $
# @(#)Makefile 8.1 (Berkeley) 6/6/93
.include <bsd.own.mk>
CPPFLAGS+= -DNOT_CSH
CPPFLAGS+= -I. -I${NETBSDSRCDIR}/bin
SRCS= time.c xtime.c
PROG= time
.PATH: ${NETBSDSRCDIR}/bin/csh
LDADD+=-lutil
DPADD+=${LIBUTIL}
.include <bsd.prog.mk>

5
usr.bin/time/ext.h Normal file
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@ -0,0 +1,5 @@
/* $NetBSD: ext.h,v 1.2 2011/11/09 19:10:10 christos Exp $ */
/* borrowed from ../../bin/csh/extern.h */
void prusage(FILE *, struct rusage *, struct rusage *, struct timespec *,
struct timespec *);

172
usr.bin/time/time.1 Normal file
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@ -0,0 +1,172 @@
.\" $NetBSD: time.1,v 1.25 2011/11/09 19:42:27 wiz Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)time.1 8.1 (Berkeley) 6/6/93
.\"
.Dd November 9, 2011
.Dt TIME 1
.Os
.Sh NAME
.Nm time
.Nd time command execution
.Sh SYNOPSIS
.Nm
.Op Fl clp
.Ar command
.Op Ar argument ...
.Sh DESCRIPTION
The
.Nm
utility
executes and
times
.Ar command .
After the command finishes,
.Nm
writes the total elapsed time (wall clock time),
.Pq Dq real ,
the CPU time spent executing
.Ar command
at user level
.Pq Dq user ,
and the CPU time spent executing in the operating system kernel
.Pq Dq sys ,
to the standard error stream.
Times are reported in seconds.
.Pp
Available options:
.Bl -tag -width Ds
.It Fl c
Displays information in the format used by the
.Nm
builtin of
.Xr csh 1 .
.It Fl l
Lists resource utilization information.
The contents of the
.Ar command
process's
.Em rusage
structure are printed; see below.
.It Fl p
The output is formatted as specified by
.St -p1003.2-92 .
.El
.Pp
Some shells, such as
.Xr csh 1
and
.Xr ksh 1 ,
have their own and syntactically different built-in version of
.Nm .
The utility described here
is available as
.Pa /usr/bin/time
to users of these shells.
.Ss Resource Utilization
If the
.Fl l
option is given, the following resource usage
information is displayed
in addition to the timing information:
.Bl -item -offset indent -compact
.It
maximum resident set size
.It
average shared memory size
.It
average unshared data size
.It
average unshared stack size
.It
page reclaims
.It
page faults
.It
swaps
.It
block input operations
.It
block output operations
.It
messages sent
.It
messages received
.It
signals received
.It
voluntary context switches
.It
involuntary context switches
.El
Resource usage is the total for the execution of
.Ar command
and any child processes it spawns, as per
.Xr wait4 2 .
.Sh FILES
.Bl -tag -width Xsys/resource.hX -compact
.It Aq sys/resource.h
.El
.Sh EXIT STATUS
The
.Nm
utility exits with one of the following values:
.Bl -tag -width indent
.It 1-125
An error occurred in the
.Nm
utility.
.It 126
The
.Ar command
was found but could not be invoked.
.It 127
The
.Ar command
could not be found.
.El
.Pp
Otherwise, the exit status of
.Nm
will be that of
.Ar command .
.Sh SEE ALSO
.Xr csh 1 ,
.Xr ksh 1 ,
.Xr clock_gettime 2 ,
.Xr getrusage 2
.Sh STANDARDS
The
.Nm
utility conforms to
.St -p1003.2-92 .
.Sh BUGS
The granularity of seconds on microprocessors is crude and
can result in times being reported for CPU usage which are too large by
a second.

209
usr.bin/time/time.c Normal file
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@ -0,0 +1,209 @@
/* $NetBSD: time.c,v 1.22 2011/11/09 19:10:10 christos Exp $ */
/*
* Copyright (c) 1987, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1987, 1988, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
#endif
__RCSID("$NetBSD: time.c,v 1.22 2011/11/09 19:10:10 christos Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <errno.h>
#include <err.h>
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "ext.h"
__dead static void usage(void);
static void prl(long, const char *);
static void prts(const char *, const char *, const struct timespec *,
const char *);
static void prtv(const char *, const char *, const struct timeval *,
const char *);
int
main(int argc, char ** volatile argv)
{
int pid;
int ch, status;
int volatile portableflag;
int volatile lflag;
int volatile cshflag;
const char *decpt;
const struct lconv *lconv;
struct timespec before, after;
struct rusage ru;
(void)setlocale(LC_ALL, "");
cshflag = lflag = portableflag = 0;
while ((ch = getopt(argc, argv, "clp")) != -1) {
switch (ch) {
case 'c':
cshflag = 1;
portableflag = 0;
lflag = 0;
break;
case 'p':
portableflag = 1;
cshflag = 0;
lflag = 0;
break;
case 'l':
lflag = 1;
portableflag = 0;
cshflag = 0;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
(void)clock_gettime(CLOCK_MONOTONIC, &before);
switch(pid = vfork()) {
case -1: /* error */
err(EXIT_FAILURE, "Vfork failed");
/* NOTREACHED */
case 0: /* child */
/* LINTED will return only on failure */
execvp(*argv, argv);
err((errno == ENOENT) ? 127 : 126, "Can't exec `%s'", *argv);
/* NOTREACHED */
}
/* parent */
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
if ((pid = wait4(pid, &status, 0, &ru)) == -1)
err(EXIT_FAILURE, "wait4 %d failed", pid);
(void)clock_gettime(CLOCK_MONOTONIC, &after);
if (!WIFEXITED(status))
warnx("Command terminated abnormally.");
timespecsub(&after, &before, &after);
if ((lconv = localeconv()) == NULL ||
(decpt = lconv->decimal_point) == NULL)
decpt = ".";
if (cshflag) {
static struct rusage null_ru;
before.tv_sec = 0;
before.tv_nsec = 0;
prusage(stderr, &null_ru, &ru, &after, &before);
} else if (portableflag) {
prts("real ", decpt, &after, "\n");
prtv("user ", decpt, &ru.ru_utime, "\n");
prtv("sys ", decpt, &ru.ru_stime, "\n");
} else {
prts("", decpt, &after, " real ");
prtv("", decpt, &ru.ru_utime, " user ");
prtv("", decpt, &ru.ru_stime, " sys\n");
}
if (lflag) {
int hz = (int)sysconf(_SC_CLK_TCK);
unsigned long long ticks;
#define SCALE(x) (long)(ticks ? x / ticks : 0)
ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
prl(ru.ru_maxrss, "maximum resident set size");
prl(SCALE(ru.ru_ixrss), "average shared memory size");
prl(SCALE(ru.ru_idrss), "average unshared data size");
prl(SCALE(ru.ru_isrss), "average unshared stack size");
prl(ru.ru_minflt, "page reclaims");
prl(ru.ru_majflt, "page faults");
prl(ru.ru_nswap, "swaps");
prl(ru.ru_inblock, "block input operations");
prl(ru.ru_oublock, "block output operations");
prl(ru.ru_msgsnd, "messages sent");
prl(ru.ru_msgrcv, "messages received");
prl(ru.ru_nsignals, "signals received");
prl(ru.ru_nvcsw, "voluntary context switches");
prl(ru.ru_nivcsw, "involuntary context switches");
}
return (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
}
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [-clp] utility [argument ...]\n",
getprogname());
exit(EXIT_FAILURE);
}
static void
prl(long val, const char *expn)
{
(void)fprintf(stderr, "%10ld %s\n", val, expn);
}
static void
prts(const char *pre, const char *decpt, const struct timespec *ts,
const char *post)
{
(void)fprintf(stderr, "%s%9lld%s%02ld%s", pre, (long long)ts->tv_sec,
decpt, (long)ts->tv_nsec / 10000000, post);
}
static void
prtv(const char *pre, const char *decpt, const struct timeval *tv,
const char *post)
{
(void)fprintf(stderr, "%s%9lld%s%02ld%s", pre, (long long)tv->tv_sec,
decpt, (long)tv->tv_usec / 10000, post);
}

9
usr.bin/time/xtime.c Normal file
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@ -0,0 +1,9 @@
/* $NetBSD: xtime.c,v 1.1 2007/02/24 21:30:27 matt Exp $ */
#include <stdio.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "ext.h"
#include "csh/time.c"