Re: problem in timings using thread in VC++

From:
"Alexander Nickolov" <agnickolov@mvps.org>
Newsgroups:
microsoft.public.vc.language
Date:
Tue, 30 Oct 2007 09:29:56 -0700
Message-ID:
<#Wvc$HxGIHA.3848@TK2MSFTNGP05.phx.gbl>
Are you sure this can't be solved with a kernel mode driver?

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

"David Lowndes" <DavidL@example.invalid> wrote in message
news:cdpdi31ko1hu1b4m8th600audqeb6kt3ji@4ax.com...

i am using a thread in which i am reading an interrupt


I'm not sure how you're doing that - but anyway...

Once the interrupt comes i am reading the hardware time of our card which
is not giving exact timing duration from interrupt to interrupt.
...
for some duration of time, iam getting timings exactly, but after that the
timings are wrong and again they are reinstated to correct timings.


Windows isn't a hard real time operating system (or even remotely real
time). The results you're seeing are probably typical, depending on a
variety of things (hardware & software) you have.

You probably need to re-think your solution - keep all the hard
real-time aspects away from Windows, it won't be able to do it.

Dave

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