Re: Can you get asleep and be awakened?

[Paul Pogonyshev <pogonyshev gmx net>]

Maurizio Colucci wrote:
> Hello,
>
> I am developing this free file manager (see screenshots and
> download it at http://segusoland.sourceforge.net ! It is already working.)
> with SWI-prolog and GTK+, and I need to schedule actions to be executed in
> the future. For example, you could choose to shut down the computer at a
> precise time.
>
> I don't know where to start. I know that I need to register myself to some
> kind of timer and get asleep. But where? I already get asleep waiting for a
> GTK event... I cannot be sleeping in two places. So I guess GTK should
> provide this kind of functionality (awaking you at a precidse time). Could
> you please give me some hint, so we can all use my program :-) ?

I assume that such scheduled actions don't need to be run at exactly the
specified time (would anyone care about a second or even five for this
matter?)  If you think the same, you could just add a timeout event source
that would wake your application up every second or five or whatever period
suites your needs.  This is negligible regarding performance impact.

Paul Pogonyshev