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Date: Thu, 19 Jan 2012 11:17:17 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] Issue with Auto relax and nested mutexes
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To: Makarand Pradhan <makarandpradhan@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On 01/18/2012 11:41 PM, Makarand Pradhan wrote:
> Hi,
> 
> Another problem was encountered with rescnt related to nested mutexes.
> 
> This time the rescnt is not incrementing because the XNOTHER bit is not 
> set, causing a SIGDEBUG or SIGXCPU to be delivered to the thread causing 
> my application to crash.

That is deliberate. We explicitely decided to not support such case and
volontarily send a SIGDEBUG when it happens, in order to signal do that
you are doing an unsupported operation.

Can you show us a scenario where there is no other solution than
changing priority while holding a mutex?

-- 
					    Gilles.