Mail Archives: djgpp/1997/02/12/12:04:54
Indrek Mandre <indrek AT warp DOT edu DOT ee> wrote:
>
>On Tue, 11 Feb 1997, Jan Hubicka wrote:
>
>> I sent letter before..but there was some problemw with net..
>> I need to exactly get time of one part of calculation in XaoS
>> (exact to 1/150sec) In unix gettimeofday works ok..but at dos it is exact
>> just to 1/18.2sec
>> How can I do this..
>> In case only way is to increase timer speed and do interrupt handler with
>> counter please send me some code if possible..
>
>I have the same problem. Also when I use setitimer to call alarm I can't
>set it to work more than 10 times in second. In linux 100 times and I
>think in all other UNIXes at least same. Gettimeofday working sucks.
>And my signal handler gets called only 10 times in second. Is there
>anything to do to make it work better? Is it a bug in DJGPP? I think it
>should work better and be compatible with UNIXes or at least Linux. Does
>usleep also work so, does it only use 1/18 second delays? It works
>sometimes strange.
>Any comments?
A good way to time a program is to use the getrusage function
wich works well on both unix gcc and msdos djgpp :
#include <sys/time.h>
#include <sys/resource.h>
struct rusage t1, t2;
double
cputime()
{
getrusage(RUSAGE_SELF, &t2);
return (t2.ru_utime.tv_sec - t1.ru_utime.tv_sec)
+ (t2.ru_utime.tv_usec - t1.ru_utime.tv_usec) / 1.0e6;
}
void
initcputime()
{
getrusage(RUSAGE_SELF, &t1);
}
Regards.
Bruno.
---
Bruno GILLETA
Laboratoire d'Informatique de Marseille
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