Hi Sheldon,
Here is an answer and who did it..
RTAI and NMT RTL also have their own calls to do the same thing but I
thought ou would like the "raw" solution.
==========================code snip ==============================
// Uses code from:-
// Andris Pavenis <[EMAIL PROTECTED]>
// to get the timer data
//
//
// cpu timer measurement
static inline long long rdtsc(void)
{
long long time;
__asm__ __volatile__( "rdtsc" : "=A" (time));
return time;
}
and it is used thusly
unsigned long long t1;
t1 = rdtsc();
Use the -O2 flag
cc -O2 -o foo foo.c
============ end code snip ===================
You can also use the same solution inside a Real Time Module.
regards ,
Phil Wilshire
lineoISG ( formerly Zentropix )
>Sheldon Hoffman wrote:
>
> <To [EMAIL PROTECTED]>
>
> > Date: Thu, 06 Jul 2000 04:27:41
> > From: David Schleef <[EMAIL PROTECTED]>
> >
> >Time stamp _counter_ refers to the Pentium-internal counter,
> >which increments at the processor core frequency. It can be
> >accessed much faster than the 8253 timers, is more accurate,
> >and overflows less often.
>
> I would like to know how to access this "pentium internal counter".
>
> Could someone please provide a reference to some code or a specific
> data sheet or other documentation (on the web?) for how to read
> this clock?
>
> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
> Shel Hoffman
> Reflective Computing
> 917 Alanson Dr
> St. Louis, MO 63132 USA
> (314) 993-6132 voice
> (314) 993-3316 fax
> [EMAIL PROTECTED]
> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
>
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