From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 05 Mar 2007 17:10:57 +0100
From: Markus Franke <Markus.Franke@domain.hid>
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Subject: [Xenomai-help] rt_pipe_write() returns -ENOMEM
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To: xenomai@xenomai.org

Dear Xenomai Developers/Users,

I want to exchange data between User Space and Kernel Space via a
Message Pipe. Therefore I set up a pipe via rt_pipe_create() and write
to the pipe using rt_pipe_write(). After a few writes rt_pipe_write()
returns -ENOMEM what means that memory is exhausted. What happens if I
just ignore this error code? Does it simply mean that values are dropped
until the first value is read from the pipe by the User-Space Task? If
so, how can I increase the size of the message pipe? rt_pipe_alloc()
doesn't seem to solve the problem, isn't it?

Thanks in advance,


Markus Franke