From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Thu, 29 Nov 2012 11:57:57 +0100
From: Jesper Christensen <jbc@thrane.com>
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Subject: Re: [Xenomai] mutex and timers
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To: Philippe Gerum <rpm@xenomai.org>
Cc: xenomai@xenomai.org

As i suspected, thank you very much.

/Jesper B. Christensen
Development Engineer
T +45 39 55 88 02
E jesper.christensen@cobham.com
Thrane & Thrane A/S - Lundtoftegaardsvej 93D
DK-2800 Kgs. Lyngby, Denmark - www.thrane.com

On 11/29/2012 11:56 AM, Philippe Gerum wrote:
> On 11/29/2012 11:53 AM, Jesper Christensen wrote:
>> Hello
>>
>> I was wondering if (and i have a feeling i already know the answer) it
>> is a no-go to call rtdm_mutex_lock from a rtdm timer handler? I've just
>> discovered that is what we do, and i have a feeling it is causing
>> trouble (most of the time it seems to work however).
>>
> 
> no go indeed. As soon as the mutex is contented, an attempt is made to
> put the caller to sleep, which can't be done over an IRQ context. So the
> situation is essentially, a mess.
>