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Date: Fri, 11 Jan 2013 14:34:02 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: select() not interrupted by signals
Message-ID: <20130111133402.GG17162@calimero.vinschen.de>
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On Jan 11 13:55, Thomas Wolff wrote:
> On 11.01.2013 09:52, Corinna Vinschen wrote:
> >On Jan 11 09:41, Thomas Wolff wrote:
> >>I had previously reported "select() hanging after terminal killed"
> >>(http://cygwin.com/ml/cygwin/2011-05/msg00418.html).
> >>It turns out that select() does not get interrupted by a SIGWINCH
> >>signal either (with likely the same cause).
> >>This raises problems with interactive programs that want to react to
> >>window size changes (like text editors).
> >>
> >>See attached updated test case; run the program, while select() is
> >>waiting (before 5 second timeout each), change window size and see
> >>no interrupt.
> >>On other systems, select() is interrupted (test case: from mintty,
> >>remote login to SunOS; also showing the terminal is not involved in
> >>the problem).
> >>
> >>This bug did not exist in cygwin 1.5; I see some Changelog entries
> >>from 2011-12-13 or 2012-01-22 which might be related.
> >Just for clarity, did you test with the latest snapshot?
> No, with the source package of the latest release.
> And I can't test with the snapshot as it doesn't compile here (after
> fresh download and unpack):

You could test using the binary...

> In file included from /usr/src/cygwin-snapshot-20130107-1/newlib/libc/include/sys/types.h:61:0,
>                  from ../../.././winsup/cygwin/winsup.h:29,
>                  from
> ../../.././winsup/cygwin/lib/_cygwin_crt0_common.cc:11:
> /usr/src/cygwin-snapshot-20130107-1/newlib/libc/include/sys/_types.h:63:20:
> schwerwiegender Fehler: stddef.h: No such file or directory
> Kompilierung beendet.

stddef.h is provided by the compiler:

$ ls -l /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/stddef.h
-rw-r--r-- 1 corinna vinschen 12542 Oct 23  2011 /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/stddef.h
$ cygcheck -f /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/stddef.h
gcc4-core-4.5.3-3

I don't see how this can fail.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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