Re: Using threads ?

[Alexis Sukrieh <alexis sukria net>]

Le jeu 20/02/2003 à 18:18, Eric M. Monsler a écrit :
> >>To sum my problem up, I want to :
> >>
> >>- exec a binary in the background from my Gtk2 window
> >>- keep an eye on the binary execution's state (running|finished or X %
> >>complete)
> >>- update some widgets according to the state of the binary execution
> >>
> 
> 
> 
> Not sure that the thread suggestion gives you any feedback other than 
> when the application terminated.

Indeed, it will be better if I could fetch the output of the binary.

> I have not used it, but from the API description it seems that 
> g_spawn_async_with_pipes() is exactly what you want.  Assuming that the 
> binary is a commandline program, or otherwise outputs the information 
> that you need to standard out.

Yes the binary is a commandline and I wonder how I can fetc hthe output
if there is a progress bar in text (cdparanoia for instance).

> You will want to use the GLib IO monitoring on the descriptor that you 
> get for the spawned binary's stdout, and then your callback will get 
> called whenever there is output to be read.
> 
> Of course, if you are writing the binary, and the binary can BE the 
> other thread, rather than BE CALLED FROM the other thread, then the 
> situation is completely different.

Well, i'm not writing the binary :)
I want my app to be able to handle a lot of external binaries.
So I have to use the first solution :)

Thanks a lot for your advices !!!

> Eric
-- 


Alexis Sukrieh <alexis@sukria.net> http://www.sukria.net
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