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Handle SIGINFO in time(1) by printing the time the given command is running.

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I find it quite handy to just hit ^T and see the time.
This commit is contained in:
Pawel Jakub Dawidek 2006-05-14 13:16:19 +00:00
parent 33cf0c5194
commit b6d7073d13
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=158560
2 changed files with 72 additions and 37 deletions
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9
usr.bin/time/time.1
View File

@ -99,6 +99,15 @@ command which is similar or identical to this utility.
Consult the
.Xr builtin 1
manual page.
.Pp
If
.Nm
receives a
.Dv SIGINFO
(see the status argument for
.Xr stty 1 )
signal, the current time the given command is running will be written to the
standard output.
.Sh ENVIRONMENT
The
.Ev PATH

100
usr.bin/time/time.c
View File

@ -63,19 +63,24 @@ static const char rcsid[] =
static int getstathz(void);
static void humantime(FILE *, long, long);
static void showtime(FILE *, struct timeval *, struct timeval *,
struct rusage *);
static void siginfo(int);
static void usage(void);
static char decimal_point;
static struct timeval before;
static int hflag, pflag;
int
main(int argc, char **argv)
{
int aflag, ch, hflag, lflag, status, pflag;
int aflag, ch, lflag, status;
int exitonsig;
pid_t pid;
struct rlimit rl;
struct rusage ru;
struct timeval before, after;
struct timeval after;
char *ofn = NULL;
FILE *out = stderr;
@ -130,46 +135,13 @@ main(int argc, char **argv)
/* parent */
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
(void)signal(SIGINFO, siginfo);
while (wait4(pid, &status, 0, &ru) != pid);
gettimeofday(&after, (struct timezone *)NULL);
if ( ! WIFEXITED(status))
warnx("command terminated abnormally");
exitonsig = WIFSIGNALED(status) ? WTERMSIG(status) : 0;
after.tv_sec -= before.tv_sec;
after.tv_usec -= before.tv_usec;
if (after.tv_usec < 0)
after.tv_sec--, after.tv_usec += 1000000;
if (pflag) {
/* POSIX wants output that must look like
"real %f\nuser %f\nsys %f\n" and requires
at least two digits after the radix. */
fprintf(out, "real %ld%c%02ld\n",
after.tv_sec, decimal_point,
after.tv_usec/10000);
fprintf(out, "user %ld%c%02ld\n",
ru.ru_utime.tv_sec, decimal_point,
ru.ru_utime.tv_usec/10000);
fprintf(out, "sys %ld%c%02ld\n",
ru.ru_stime.tv_sec, decimal_point,
ru.ru_stime.tv_usec/10000);
} else if (hflag) {
humantime(out, after.tv_sec, after.tv_usec/10000);
fprintf(out, " real\t");
humantime(out, ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
fprintf(out, " user\t");
humantime(out, ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
fprintf(out, " sys\n");
} else {
fprintf(out, "%9ld%c%02ld real ",
after.tv_sec, decimal_point,
after.tv_usec/10000);
fprintf(out, "%9ld%c%02ld user ",
ru.ru_utime.tv_sec, decimal_point,
ru.ru_utime.tv_usec/10000);
fprintf(out, "%9ld%c%02ld sys\n",
ru.ru_stime.tv_sec, decimal_point,
ru.ru_stime.tv_usec/10000);
}
showtime(out, &before, &after, &ru);
if (lflag) {
int hz = getstathz();
u_long ticks;
@ -278,3 +250,57 @@ humantime(FILE *out, long sec, long usec)
fprintf(out, "%ldm", mins);
fprintf(out, "%ld%c%02lds", sec, decimal_point, usec);
}
static void
showtime(FILE *out, struct timeval *before, struct timeval *after,
struct rusage *ru)
{
after->tv_sec -= before->tv_sec;
after->tv_usec -= before->tv_usec;
if (after->tv_usec < 0)
after->tv_sec--, after->tv_usec += 1000000;
if (pflag) {
/* POSIX wants output that must look like
"real %f\nuser %f\nsys %f\n" and requires
at least two digits after the radix. */
fprintf(out, "real %ld%c%02ld\n",
after->tv_sec, decimal_point,
after->tv_usec/10000);
fprintf(out, "user %ld%c%02ld\n",
ru->ru_utime.tv_sec, decimal_point,
ru->ru_utime.tv_usec/10000);
fprintf(out, "sys %ld%c%02ld\n",
ru->ru_stime.tv_sec, decimal_point,
ru->ru_stime.tv_usec/10000);
} else if (hflag) {
humantime(out, after->tv_sec, after->tv_usec/10000);
fprintf(out, " real\t");
humantime(out, ru->ru_utime.tv_sec, ru->ru_utime.tv_usec/10000);
fprintf(out, " user\t");
humantime(out, ru->ru_stime.tv_sec, ru->ru_stime.tv_usec/10000);
fprintf(out, " sys\n");
} else {
fprintf(out, "%9ld%c%02ld real ",
after->tv_sec, decimal_point,
after->tv_usec/10000);
fprintf(out, "%9ld%c%02ld user ",
ru->ru_utime.tv_sec, decimal_point,
ru->ru_utime.tv_usec/10000);
fprintf(out, "%9ld%c%02ld sys\n",
ru->ru_stime.tv_sec, decimal_point,
ru->ru_stime.tv_usec/10000);
}
}
static void
siginfo(int sig __unused)
{
struct timeval after;
struct rusage ru;
gettimeofday(&after, (struct timezone *)NULL);
getrusage(RUSAGE_CHILDREN, &ru);
showtime(stdout, &before, &after, &ru);
}