lkml.org 
[lkml]   [1999]   [May]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectftime() not giving miliseconds?
Hi!

I've came accross something which looks like a bug.

#include <stdio.h>
#include <time.h>
#include <sys/timeb.h>
#include <unistd.h>

void
main( int argc, char *argv[] )
{
struct timeb tb;

ftime(&tb);
printf( "It's now %d.%d\n", tb.time, tb.millitm );
usleep(10000);
ftime(&tb);
printf( "It's now %d.%d\n", tb.time, tb.millitm );
}

Gives me:

pavel@bug:~/misc$ ./timebug
It's now 926366885.0
It's now 926366885.0
pavel@bug:~/misc$ ./timebug
It's now 926366885.0
It's now 926366885.0
pavel@bug:~/misc$ ./timebug
It's now 926366886.0
It's now 926366886.0

...which is bug in my eyes. Kernel 2.2.7, libc-2.0.7.so from debian
system. I'm not sure if it is kernel or libc...

Pavel

PS: Yes, I've rdtsc working.

>Release: libc-2.0.7
>Environment:
<machine, os, target, libraries (multiple lines)>
Host type: i386-pc-linux-gnu
System: Linux bug 2.2.7 #261 Mon May 10 21:52:24 CEST 1999 i586
unknown
Architecture: i586

Addons: crypt linuxthreads localedata
Build CFLAGS: -O2
Build CC: gcc -B$(common-objpfx)
Build shared: yes
Build profile: yes
Build omitfp: no
Stdio: libio


--
I'm really pavel@ucw.cz. Look at http://195.113.31.123/~pavel. Pavel
Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread!

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:51    [from the cache]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and my Meterkast|Read the blog