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List:       cygwin
Subject:    Re: Problem with named pipes
From:       Dan Kegel <dank () kegel ! com>
Date:       2018-12-11 14:57:19
Message-ID: CAPF-yOaQx5ZTDHnVecyEOCtZp4sR9n3VgFU8Y0HTnrGKqfRz0g () mail ! gmail ! com
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On Tue, Dec 11, 2018 at 6:42 AM Ken Brown <kbrown@cornell.edu> wrote:
> > Very tricky problem.  The FIFO code falls over its own feet trying to
> > handle more than one writer (exec 7> is the first, echo blah is the
> > second writer).  Sigh.  This code needs a thorough rewrite...
>
> I'm coming back to this thread after three years.  I'd be willing to put in some
> time working on this, if you could point me in the right direction.

I'm no cygwin developer, but:
It might be worth spending a little quality time with
https://cygwin.com/git/gitweb.cgi?p=newlib-cygwin.git;a=tree;f=winsup/testsuite/winsup.api/ltp
to update it to handle the case you're interested in first...?
https://github.com/linux-test-project/ltp has come a long, long ways
since cygwin's copy was made.  It might be interesting to just
try building and running LTP on cygwin and see how far it is from
working at all... I would not be surprised if cygwin's copy is highly customized
to avoid spikes.
- Dan

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