dmbcs/i-bash
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Imported from ../bash-2.04.tar.gz.

Browse source
This commit is contained in:
Jari Aalto 2000-03-17 21:46:59 +00:00
commit bb70624e96
387 changed files with 28522 additions and 9334 deletions
Download patch file Download diff file Expand all files Collapse all files

144
lib/sh/timeval.c Normal file
View file

@ -0,0 +1,144 @@
/* timeval.c - functions to perform operations on struct timevals */
/* Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Bash is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with Bash; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#include <config.h>
#if defined (HAVE_TIMEVAL)
#include <sys/types.h>
#include <posixtime.h>
#include <stdio.h>
struct timeval *
difftimeval (d, t1, t2)
struct timeval *d, *t1, *t2;
{
d->tv_sec = t2->tv_sec - t1->tv_sec;
d->tv_usec = t2->tv_usec - t1->tv_usec;
if (d->tv_usec < 0)
{
d->tv_usec += 1000000;
d->tv_sec -= 1;
if (d->tv_sec < 0) /* ??? -- BSD/OS does this */
{
d->tv_sec = 0;
d->tv_usec = 0;
}
}
return d;
}
struct timeval *
addtimeval (d, t1, t2)
struct timeval *d, *t1, *t2;
{
d->tv_sec = t1->tv_sec + t2->tv_sec;
d->tv_usec = t1->tv_usec + t2->tv_usec;
if (d->tv_usec >= 1000000)
{
d->tv_usec -= 1000000;
d->tv_sec += 1;
}
return d;
}
/* Do "cpu = ((user + sys) * 10000) / real;" with timevals.
Barely-tested code from Deven T. Corzine <deven@ties.org>. */
int
timeval_to_cpu (rt, ut, st)
struct timeval *rt, *ut, *st; /* real, user, sys */
{
struct timeval t1, t2;
register int i;
addtimeval (&t1, ut, st);
t2.tv_sec = rt->tv_sec;
t2.tv_usec = rt->tv_usec;
for (i = 0; i < 6; i++)
{
if ((t1.tv_sec > 99999999) || (t2.tv_sec > 99999999))
break;
t1.tv_sec *= 10;
t1.tv_sec += t1.tv_usec / 100000;
t1.tv_usec *= 10;
t1.tv_usec %= 1000000;
t2.tv_sec *= 10;
t2.tv_sec += t2.tv_usec / 100000;
t2.tv_usec *= 10;
t2.tv_usec %= 1000000;
}
for (i = 0; i < 4; i++)
{
if (t1.tv_sec < 100000000)
t1.tv_sec *= 10;
else
t2.tv_sec /= 10;
}
return ((t2.tv_sec == 0) ? 0 : t1.tv_sec / t2.tv_sec);
}
/* Convert a pointer to a struct timeval to seconds and thousandths of a
second, returning the values in *SP and *SFP, respectively. This does
rounding on the fractional part, not just truncation to three places. */
void
timeval_to_secs (tvp, sp, sfp)
struct timeval *tvp;
long *sp;
int *sfp;
{
int rest;
*sp = tvp->tv_sec;
*sfp = tvp->tv_usec % 1000000; /* pretty much a no-op */
rest = *sfp % 1000;
*sfp = (*sfp * 1000) / 1000000;
if (rest >= 500)
*sfp += 1;
/* Sanity check */
if (*sfp >= 1000)
{
*sp += 1;
*sfp -= 1000;
}
}
/* Print the contents of a struct timeval * in a standard way to stdio
stream FP. */
void
print_timeval (fp, tvp)
FILE *fp;
struct timeval *tvp;
{
int minutes, seconds_fraction;
long seconds;
timeval_to_secs (tvp, &seconds, &seconds_fraction);
minutes = seconds / 60;
seconds %= 60;
fprintf (fp, "%0dm%0ld.%03ds", minutes, seconds, seconds_fraction);
}
#endif /* HAVE_TIMEVAL */