Import NetBSD time(1)
Change-Id: I035d21a926aa82434c24a84b914bd58ac064e66a
This commit is contained in:
David van Moolenbroek
parent
d1e4d7ce7d
commit
b7f0178aeb
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@ -25,7 +25,7 @@ SUBDIR= add_route arp at backup \
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slip spell sprofalyze sprofdiff srccrc \
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svrctl swifi synctree sysenv \
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tcpd tcpdp tcpstat telnet \
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telnetd term termcap tget time \
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telnetd term termcap tget \
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truncate udpstat umount \
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update version vol \
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writeisofs fetch \
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@ -1,3 +0,0 @@
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PROG= time
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.include <bsd.prog.mk>
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@ -1,32 +0,0 @@
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.TH TIME 1
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.SH NAME
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time \- report how long a command takes
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.SH SYNOPSIS
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\fBtime [-C] \fIcommand\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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The -C option tells time to report the cpu cycle counter
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difference.
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.SH EXAMPLES
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.TP 20
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.B time a.out
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# Report how long \fIa.out\fR takes
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.TP 20
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.B time ls \-l *.c
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# Report how long \fIls\fR takes
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.SH DESCRIPTION
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.PP
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The command is executed and the real time, user time, and system time (in
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hours, minutes, and seconds) are printed.
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Shell scripts cannot be timed.
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.SH "SEE ALSO"
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.BR times (2).
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@ -1,172 +0,0 @@
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/* time - time a command Authors: Andy Tanenbaum & Michiel Huisjes */
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#define NEW 1
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#include <sys/types.h>
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#include <sys/times.h>
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#include <limits.h>
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#include <time.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <minix/minlib.h>
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#include <stdio.h>
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/* -DNEW prints time to 0.01 sec. */
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#ifdef NEW
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#define HUNDREDTHS 1
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#endif
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char **args;
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char *name;
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int digit_seen;
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char a[] = " . \0";
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int main(int argc, char **argv);
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void print_time(clock_t t);
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void twin(int n, char *p);
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void execute(void);
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int main(argc, argv)
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int argc;
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char *argv[];
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{
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int cycles = 0;
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struct tms pre_buf, post_buf;
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int status, pid;
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struct tms dummy;
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int start_time, end_time;
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u64_t start_tsc, end_tsc, spent_tsc;
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clock_t real_time;
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int c;
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if (argc == 1) exit(0);
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while((c=getopt(argc, argv, "C")) != EOF) {
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switch(c) {
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case 'C':
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cycles = 1;
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break;
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default:
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fprintf(stderr, "usage: time [-C] <command>\n");
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exit(1);
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}
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}
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argv += optind;
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argc -= optind;
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args = &argv[0];
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name = argv[0];
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/* Get real time at start of run. */
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start_time = times(&dummy);
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read_tsc_64(&start_tsc);
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/* Fork off child. */
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if ((pid = fork()) < 0) {
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std_err("Cannot fork\n");
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exit(1);
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}
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if (pid == 0) execute();
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/* Parent is the time program. Disable interrupts and wait. */
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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do {
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times(&pre_buf);
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} while (wait(&status) != pid);
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read_tsc_64(&end_tsc);
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spent_tsc = end_tsc - start_tsc;
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end_time = times(&dummy);
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real_time = (end_time - start_time);
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if ((status & 0377) != 0) std_err("Command terminated abnormally.\n");
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times(&post_buf);
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if(cycles) {
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fprintf(stderr, "%qd tsc ", spent_tsc);
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}
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/* Print results. -DNEW enables time on one line to 0.01 sec */
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#ifndef NEW
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std_err("real ");
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print_time(real_time);
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std_err("\nuser ");
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print_time(post_buf.tms_cutime - pre_buf.tms_cutime);
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std_err("\nsys ");
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print_time(post_buf.tms_cstime - pre_buf.tms_cstime);
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std_err("\n");
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#else
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print_time(real_time);
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std_err(" real");
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print_time(post_buf.tms_cutime - pre_buf.tms_cutime);
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std_err(" user");
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print_time(post_buf.tms_cstime - pre_buf.tms_cstime);
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std_err(" sys\n");
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#endif
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return((status & 0377) ? -1 : (status >> 8));
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}
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void print_time(t)
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register clock_t t;
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{
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/* Print the time 't' in hours: minutes: seconds. 't' is in ticks. */
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int hours, minutes, seconds, hundredths, i;
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u32_t system_hz;
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system_hz = (u32_t) sysconf(_SC_CLK_TCK);
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digit_seen = 0;
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for (i = 0; i < 8; i++) a[i] = ' ';
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hours = (int) (t / ((clock_t) 3600 * system_hz));
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t -= (clock_t) hours * 3600 * system_hz;
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minutes = (int) (t / ((clock_t) 60 * system_hz));
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t -= (clock_t) minutes * 60 * system_hz;
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seconds = (int) (t / system_hz);
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t -= (clock_t) seconds * system_hz;
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hundredths = (int) (t * 100 / system_hz);
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if (hours) {
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twin(hours, &a[0]);
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a[2] = ':';
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}
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if (minutes || digit_seen) {
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twin(minutes, &a[3]);
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a[5] = ':';
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}
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if (seconds || digit_seen)
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twin(seconds, &a[6]);
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else
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a[7] = '0';
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a[9] = hundredths / 10 + '0';
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#ifdef HUNDREDTHS /* tenths used to be enough */
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a[10] = hundredths % 10 + '0';
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#endif
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std_err(a);
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}
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void twin(n, p)
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int n;
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char *p;
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{
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char c1, c2;
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c1 = (n / 10) + '0';
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c2 = (n % 10) + '0';
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if (digit_seen == 0 && c1 == '0') c1 = ' ';
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*p++ = c1;
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*p++ = c2;
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if (n > 0) digit_seen = 1;
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}
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void execute()
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{
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execvp(name, args);
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std_err("Cannot execute ");
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std_err(name);
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std_err("\n");
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exit(-1);
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}
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@ -25,7 +25,7 @@ SUBDIR= asa \
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\
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sdiff sed seq shar shlock \
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shuffle sort split stat su \
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tail tee tic touch tput \
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tail tee tic time touch tput \
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tr true tsort tty ul uname unexpand unifdef \
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uniq units unvis unzip users \
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uudecode uuencode uuidgen vis \
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@ -0,0 +1,16 @@
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# $NetBSD: Makefile,v 1.9 2011/08/28 08:24:42 christos Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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.include <bsd.own.mk>
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CPPFLAGS+= -DNOT_CSH
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CPPFLAGS+= -I. -I${NETBSDSRCDIR}/bin
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SRCS= time.c xtime.c
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PROG= time
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.PATH: ${NETBSDSRCDIR}/bin/csh
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LDADD+=-lutil
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DPADD+=${LIBUTIL}
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.include <bsd.prog.mk>
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@ -0,0 +1,5 @@
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/* $NetBSD: ext.h,v 1.2 2011/11/09 19:10:10 christos Exp $ */
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/* borrowed from ../../bin/csh/extern.h */
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void prusage(FILE *, struct rusage *, struct rusage *, struct timespec *,
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struct timespec *);
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@ -0,0 +1,172 @@
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.\" $NetBSD: time.1,v 1.25 2011/11/09 19:42:27 wiz Exp $
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.\"
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.\" Copyright (c) 1980, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)time.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd November 9, 2011
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.Dt TIME 1
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.Os
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.Sh NAME
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.Nm time
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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 clp
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.Ar command
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.Op Ar argument ...
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.Sh DESCRIPTION
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The
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.Nm
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utility
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executes and
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times
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.Ar command .
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After the command finishes,
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.Nm
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writes the total elapsed time (wall clock time),
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.Pq Dq real ,
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the CPU time spent executing
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.Ar command
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at user level
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.Pq Dq user ,
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and the CPU time spent executing in the operating system kernel
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.Pq Dq sys ,
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to the standard error stream.
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Times are reported in seconds.
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.Pp
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Available options:
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.Bl -tag -width Ds
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.It Fl c
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Displays information in the format used by the
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.Nm
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builtin of
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.Xr csh 1 .
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.It Fl l
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Lists resource utilization information.
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The contents of the
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.Ar command
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process's
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.Em rusage
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structure are printed; see below.
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.It Fl p
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The output is formatted as specified by
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.St -p1003.2-92 .
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.El
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.Pp
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Some shells, such as
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.Xr csh 1
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and
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.Xr ksh 1 ,
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have their own and syntactically different built-in version of
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.Nm .
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The utility described here
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is available as
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.Pa /usr/bin/time
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to users of these shells.
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.Ss Resource Utilization
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If the
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.Fl l
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option is given, the following resource usage
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information is displayed
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in addition to the timing information:
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.Bl -item -offset indent -compact
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.It
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maximum resident set size
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.It
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average shared memory size
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.It
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average unshared data size
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.It
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average unshared stack size
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.It
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page reclaims
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.It
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page faults
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.It
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swaps
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.It
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block input operations
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.It
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block output operations
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.It
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messages sent
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.It
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messages received
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.It
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signals received
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.It
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voluntary context switches
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.It
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involuntary context switches
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.El
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Resource usage is the total for the execution of
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.Ar command
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and any child processes it spawns, as per
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.Xr wait4 2 .
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.Sh FILES
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.Bl -tag -width Xsys/resource.hX -compact
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.It Aq sys/resource.h
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.El
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.Sh EXIT STATUS
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The
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.Nm
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utility exits with one of the following values:
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.Bl -tag -width indent
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.It 1-125
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An error occurred in the
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.Nm
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utility.
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.It 126
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The
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.Ar command
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was found but could not be invoked.
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.It 127
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The
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.Ar command
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could not be found.
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.El
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.Pp
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Otherwise, the exit status of
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.Nm
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will be that of
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.Ar command .
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.Sh SEE ALSO
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.Xr csh 1 ,
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.Xr ksh 1 ,
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.Xr clock_gettime 2 ,
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.Xr getrusage 2
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.Sh STANDARDS
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The
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.Nm
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utility conforms to
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.St -p1003.2-92 .
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.Sh BUGS
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The granularity of seconds on microprocessors is crude and
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can result in times being reported for CPU usage which are too large by
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a second.
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|
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@ -0,0 +1,209 @@
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/* $NetBSD: time.c,v 1.22 2011/11/09 19:10:10 christos Exp $ */
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/*
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* Copyright (c) 1987, 1988, 1993
|
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* 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.
|
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1987, 1988, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: time.c,v 1.22 2011/11/09 19:10:10 christos Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <err.h>
|
||||
#include <locale.h>
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
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#include <unistd.h>
|
||||
|
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#include "ext.h"
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||||
|
||||
__dead static void usage(void);
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static void prl(long, const char *);
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static void prts(const char *, const char *, const struct timespec *,
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const char *);
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||||
static void prtv(const char *, const char *, const struct timeval *,
|
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const char *);
|
||||
|
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int
|
||||
main(int argc, char ** volatile argv)
|
||||
{
|
||||
int pid;
|
||||
int ch, status;
|
||||
int volatile portableflag;
|
||||
int volatile lflag;
|
||||
int volatile cshflag;
|
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const char *decpt;
|
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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);
|
||||
}
|
||||
|
|
@ -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"
|
||||
Loading…
Reference in New Issue