From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sun, 24 Jun 2012 13:56:48 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] Debian Bug#678695: Xenomai posix skin : bug with
 pthread_mutex_trylock function
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To: Roland Stigge <stigge@antcom.de>
Cc: 678695@bugs.debian.org, duch.alexandre@gmail.com, Xenomai@xenomai.org

On 06/24/2012 01:12 PM, Roland Stigge wrote:
> Original Report (the report at the above link contains the example file):
> 
> Package: xenomai
> Version: 2.6.0
> 
> Kernel:2.6.38.8 - Xenomai:2.6.0
> arch:i686 i386 GNU/Linux
> 
> Hi,
> 
> The attached code shows a malfunction of the pthread_mutex_trylock function.
> 
> 
> Description of test.c:
> The main task takes the mutex during 1second while the 't1' task tries
> to take this mutex from 0.5sc.
> We can notice that with the posix skin of xenomai, t1 never succeeded to
> take the mutex, which is not the case without the posix skin of xenomai.
> 
> 
> 
> Duchesne Alexandre
> duch.alexandre@gmail.com

pthread_mutex_trylock is know to be broken in Xenomai 2.6.0, this has 
been fixed in xenomai current development branch. See patches:
http://git.xenomai.org/?p=xenomai-2.6.git;a=commitdiff;h=a0822a77ba383dac832253e6f0ca3431860a5661;hp=b3af76a4dc4cc2282fb83cdfeb9c454a1242a125
http://git.xenomai.org/?p=xenomai-2.6.git;a=commitdiff;h=de094a9e580511eb2dfdc0cee78bf92c959e2c55;hp=28256f3937c80f25fd6f49394a4ffb5d7b3179c7

-- 
                                                                Gilles.