Re: [Xenomai-help] rtpipe problem not solved by 2.4.1

[Jan Kiszka <jan.kiszka@domain.hid>]

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bite wrote:
> Hi,
> 
> working with 2.3.4 I have an occasional problem with rtpipe.
> 
> Writing several integers from the rt side with rt_pipe_write (..., P_NORMAL)
> sometimes it happens that only the first integer can be read from non-rt.
> 
> The problem seems to be triggered by (moderately) heavy socket traffic, not
> clear why.
> 
> Reading from the 2.4.1 log: "Close SMP race window in message pipe's
> read-side", I decided to give it a try even if I'm not working with SMP, but
> my problem persists.
> 
> It is not urgent for me, I found my way out by polling ring buffers instead
> of using rtps, but I think it is worth raising the suspect that there _is_
> even a non-SMP race condition.

Do you have a simple test case that can trigger the issue? That would 
help a lot to nail the problem down.

Jan


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