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Date: Wed, 24 Apr 2002 08:42:16 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Alex Vinokur <alexvn AT bigfoot DOT com>
cc: djgpp AT delorie DOT com
Subject: Re: uclock_t & gcc 3.0.4 on Windows-2000
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On Wed, 24 Apr 2002, Alex Vinokur wrote:

> | > So, what is alternative ?
> | > * rusage ? Does it work ?
> | > * something else ?
> |
> | It depends on what are you trying to accomplish.  Can you tell some
> | more details?
> 
> For instance, something like (pseudo-code) :
> 
> 
> void foo ()
> {
>     start_time = some-get-time-function();
>     // stuff
>     end_time = some-get-time-function();
>     assert (start_time  <= end_time);
>     cout << (end_time  -  start_time) << endl;
> }
> 
> int main ()
> {
>     for (int i = 0; i < TOTAL-ITERATIONS; i++)
>    {
>       foo ();
>    }
> }

Yes, but what is this for?  This is a toy program; I was interested to 
hear about some real-life application which needs that.

The important question is: can you settle for the basic 54-msec 
resolution of the standard PC clock?  If you can, use `clock' (or 
compile with -pg and use Gprof); if not, you will have to write some 
inline assembly using the RDTSC (sp?) instruction.  (I think someone 
posted such assembly here some time ago, so searching the DJGPP archives 
might find it.)