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Date: Mon, 15 Feb 2010 22:16:55 -0500
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
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Subject: Re: select() and named pipes
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On Tue, Feb 16, 2010 at 02:20:55AM +0100, Enrico Forestieri wrote:
>On Sun, Feb 14, 2010 at 08:54:27PM -0500, Christopher Faylor wrote:
>
>> I just checked in YA in my series of attempts to get this working right.
>> It will behave marginally better now but there are still problems if you
>> attempt to write to a fifo before anything is reading it and then try to
>> do a non-blocking read.
>
>Thank you for your efforts. It indeed works better with the 2010-02-15
>snapshot.
>
>In order to help you pinpointing another glitch, I attach here a slightly
>slightly modified version of the original test case and a shell script.
>Launching the program in a terminal and then the shell script in another
>one, it seems that the program hangs on the write() call.
>Apparently, the problem is the O_RDWR flag, as replacing it with O_WRONLY,
>everything works. The test case works with O_RDWR both in cygwin 1.5 and
>linux.

Yes, non-blocking writes are not working.  They never really were, in fact.

cgf

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