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From: Ted Dennison<dennison@telepath.com>
References: <17cd177c.0110120321.3077bccf@posting.google.com>
 <oyCx7.10592$Lz2.3580572774@newssvr30.news.prodigy.com>
Subject: Re: CPU time for Win32 & GNAT
Message-ID: <tkDx7.26129$ev2.34679@www.newsranger.com>
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NNTP-Posting-Date: Fri, 12 Oct 2001 10:43:37 EDT
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Date: Fri, 12 Oct 2001 14:43:37 GMT
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Date: 2001-10-12T14:43:37+00:00
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In article <oyCx7.10592$Lz2.3580572774@newssvr30.news.prodigy.com>, Pat Rogers
says...
>
>"Gautier" <gautier_niouzes@hotmail.com> wrote in message
>news:17cd177c.0110120321.3077bccf@posting.google.com...
>> Does someone know how to obtain the CPU time (or a CPU
>> duration...) for Win32 (under GNAT) in a simple way ?
>> The program doesn't use tasking and no more resolution
>> than the one of Duration is needed for time spans.
>> I'm sure someone has a ready-made function in his/her toolbox...
>
>Better yet, why not use the Pentium ReadTimeStampCounter (RDTSC)
>instruction?  It samples the register that keeps a count of the number of
>clock cycles since boot-up.  Given the exact clock speed you can compute
>exactly how much time has elapsed between two samples.

I think he wants elapsed CPU time for his process, not for the whole system.
That would essentially just give him wall time (really really precise wall
time).

Is that instruction avalilable in ring 3?

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