[Gambas-user] Signal management

Doriano Blengino doriano.blengino at ...1909...
Tue Jul 13 14:38:35 CEST 2010

Benoît Minisini ha scritto:
> Hi,
> I don't remember who needed signal management in Gambas.
> But it's there now in Gambas 3 since revision #3037, through a new component 
> named "gb.signal" and a static class named "Signal".
> Signal.Ignore(<signal number>) to ignore a signal.
> Signal.Catch(<signal number>) to catch a signal.
> ...
Nice thing. But now I have a further question: is it possible to 
implement generic callbacks in Gambas?
I mean - many libraries have functions where you specify a callback to 
be called, like the glib function g_signal_connect(); it would be nice 
to implement them, even partly, without resorting to write a gambas 
component. May be that by using libffi it is possible to implement them 
fully, but even a simple event could do. My problem now is that using 
ALSA, I must poll continuously to see if some event is coming in, 
wasting a lot of CPU and losing precision. With a callback if would be 
much simpler...

I hope I have been clear enough.


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