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Date: Fri, 22 Aug 2008 22:22:23 +0200
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai-help] xnpipe EPOLLIN starvation
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To: Filip Van Rillaer <Filip.VanRillaer@domain.hid>
Cc: xenomai@xenomai.org

Filip Van Rillaer wrote:
> Hello Philippe,
> 
> FYI: As I was not 100% sure that the EPOLLET of a read on a fd didn't
> impact the write on the same fd, I just made a new version of xenopipe
> (still with epoll) with separate filedescriptors for read and write in
> the epoll_ctl.   So epoll_wait has 4 entries : fd_tty1_read,
> fd_tty1_write, fd_pipe_read, fd_pipe_write ... but the problem remains.
> 
> To be able to open a pipe (e.g. /dev/rtp1) once as O_WRONLY and once as
> O_RDONLY, I had to hack the pipe-code.  It would be nice if this would
> be possible without hacking the code.
>

You may want to retry using epoll() with the latest updates committed.

> Best regards,
> Filip
> 
> 


-- 
Philippe.