From: "Monica Dsz" <monica.dsz@googlemail.com>
To: "ecos discuss" <ecos-discuss@ecos.sourceware.org>,
"Gary Thomas" <gary@mlbassoc.com>
Subject: Re: [ECOS] why is it wrong to call cyg_semaphore_post() in ISR???
Date: Fri, 09 Jun 2006 07:23:00 -0000 [thread overview]
Message-ID: <000501c68b95$45470cb0$ea14a8c0@taurus> (raw)
In-Reply-To: <1149789900.15359.183.camel@hermes>
> It's a trade off - do you prevent interrupts (hence ISR routines) from
> running during all data critical sections or do you simply not allow
> those [ISR] functions to execute code that might perturb critical data?
> eCos chooses the latter method which allows for lower interrupt latency
> by putting off things until the DSR can be safely run.
Thanks alot. this is exactly what I am searching for. I searched a lot to
find it and I read alot but in vain I did not get it. Now I understood it.
Once again thanks for your explanation.
monica
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Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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next prev parent reply other threads:[~2006-06-09 7:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-08 17:39 Monica Dsz
2006-06-08 18:06 ` Gary Thomas
2006-06-09 7:23 ` Monica Dsz [this message]
2006-06-09 9:19 ` Monica Dsz
2006-06-09 9:27 ` Andrew Lunn
2006-06-09 9:43 ` Monica Dsz
2006-06-20 12:52 Goldschmidt Simon
2006-06-20 13:12 ` Andrew Lunn
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