FD_SETSIZE and select

FD_SETSIZE and select

[Alexander Gottwald]

Hi,

The Cygwin/X source uses the assumption that FD_SETSIZE == 256 in many places.
I'm currently adding a -DFD_SETSIZE=256 to the build commandline but I'm
not sure if this has any sideeffects.

Is select() capable of handling other sizes than 64 which is set in sys/types.h?

bye
    ago
BTW: please keep the cc to cygwin-xfree since I'm only monitoring that list and
I'd like the others there be informed too.
-- 
 Alexander.Gottwald@informatik.tu-chemnitz.de
 http://www.gotti.org           ICQ: 126018723

RE: FD_SETSIZE and select

[Thomas Chadwick]

FWIW, I did a little plumbing regarding select and FD_SETSIZE when packaging 
x2x.  The thread preceeding this post might be of some interest...

http://www.cygwin.com/ml/cygwin-xfree/2002-07/msg00607.html

>From: Alexander Gottwald <Alexander.Gottwald@s1999.tu-chemnitz.de>
>Reply-To: cygwin-xfree@cygwin.com
>To: cygwin@cygwin.com
>CC: cygwin-xfree@cygwin.com
>Subject: FD_SETSIZE and select
>Date: Tue, 3 Feb 2004 22:07:27 +0100 (MET)
>
>Hi,
>
>The Cygwin/X source uses the assumption that FD_SETSIZE == 256 in many 
>places.
>I'm currently adding a -DFD_SETSIZE=256 to the build commandline but I'm
>not sure if this has any sideeffects.
>
>Is select() capable of handling other sizes than 64 which is set in 
>sys/types.h?
>
>bye
>     ago
>BTW: please keep the cc to cygwin-xfree since I'm only monitoring that list 
>and
>I'd like the others there be informed too.
>--
>  Alexander.Gottwald@informatik.tu-chemnitz.de
>  http://www.gotti.org           ICQ: 126018723

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