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Re: select() and named pipes
- From: Dave Korn <dave dot korn dot cygwin at googlemail dot com>
- To: cygwin at cygwin dot com
- Date: Tue, 22 Dec 2009 23:37:04 +0000
- Subject: Re: select() and named pipes
- References: <20091222224309.GA3504@GIOVE>
Enrico Forestieri wrote:
> I am experiencing a problem with select() and named pipes in cygwin 1.7.
> The attached test case segfaults on the select() call, but works fine
> with both cygwin 1.5 and linux.
Confirmed. It appears that start_thread_pipe() is called for both pipes and
fifos, but only for pipes is there a device_specific_pipe in the
select_pipe_info struct passed in; for fifos this pointer is null. This is
down to the different initialisation sequences in fhandler_pipe::except_* vs.
fhandler_fifo::except_*. I'm not sure if this is an omission in the except_*
functions or an oversight in the start_thread_pipe function; cgf will know
what to do.
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