Re: Improved DNS resolving for laptops?

[Nix <nix at esperi dot org dot uk>]

On Mon, 26 Jul 2004, Petter Reinholdtsen uttered the following:
> [Nix]
>> If you don't mind nonportability you could use fcntl (...,
>> F_NOTIFY,...)  to find out the instant resolv.conf is changed. (In
>> practice you'd probably just set a flag on notification and consult
>> the flag on next DNS lookup: rereading resolv.conf more often than
>> that is pointless.)
> 
> This feature notifies the process using SIGIO (at least acording to
> <URL:http://linux.com.hk/PenguinWeb/manpage.jsp?name=fcntl&section=2>),
> so it is not very good to use in a library.

I thought it could use realtime signals, too? There are plenty of those.

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