From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 05 Mar 2007 17:53:08 +0100
From: Markus Franke <Markus.Franke@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] rt_pipe_write() returns -ENOMEM
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org

Gilles Chanteperdrix wrote:
> The fourth argument of rt_pipe_create is the size of the reserved pool
> used by the pipe. If you pass 0, the system heap is used. The size of
> the system heap is configured via the kernel configuration.
> 
> rt_pipe_alloc allocates a message from the used pool (the rt_pipe pool
> if you passed a non 0 pool size to rt_pipe_create, or the system heap if
> you passed a null pool size to rt_pipe_create).

Yes, this I know already. But what happens if rt_pipe_write() returns
-ENOMEM? Does the data to be written simply get lost or is it simply
enqeued at the end and the first element in the pipe get's lost?