This is the mail archive of the
libc-hacker@sourceware.cygnus.com
mailing list for the glibc project.
Re: dumb question
- To: Andreas Jaeger <aj@arthur.rhein-neckar.de>
- Subject: Re: dumb question
- From: Roland McGrath <roland@frob.com>
- Date: Tue, 30 Jun 1998 12:59:32 -0400
- Cc: Thorsten Kukuk <kukuk@weber.uni-paderborn.de>, libc-hacker@cygnus.com
> The advantage of using poll instead of select is that glibc is not
> dependend anymore on FD_SETSIZE and doesn't need to be recompiled if
> the user changes NR_OPEN.
The select interface was designed specifically to avoid this problem,
if you use it right. You should never need to use FD_SETSIZE. You can
dynamically allocate as many bits as you need, and then you pass the max fd
number to select. If the kernel is not a piece of shit, this works fine.