Re: Selective accept in Ada tasking

From: "Ivan" <paniaguaivan@QUITAESTOhotmail.com>
Subject: Re: Selective accept in Ada tasking
Date: Wed, 27 Nov 2002 14:17:02 GMT
Date: 2002-11-27T14:17:02+00:00	[thread overview]
Message-ID: <yt4F9.510$6m.65928@news.ono.com> (raw)
In-Reply-To: mailman.1038391741.12325.comp.lang.ada@ada.eu.org

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    I have found some resources concerning this, like
http://www.cs.utsa.edu/~danlo/ada/ada95.htm that recomend a delay 0.0. It's
not a serious solution but it runs. Maybe another compiler instead of GNAT
takes a better solution?

    Thanx.


"Grein, Christoph" <christoph.grein@eurocopter.com> escribi� en el mensaje
news:mailman.1038391741.12325.comp.lang.ada@ada.eu.org...
> > I'm a beginner and I have a problem. This code makes my CPU reach
> > 100%:
>
> Looks like a bug to me. It should stop at the select and wait until there
is an
> entry call. Is it possible that there is always a call present?
>
> What happens if you remove the terminate alternative? Should not really
have an
> effect, but just to see whether there is a problem in Gnat.
>
> >
> > task body Man_Motor1 is
> > begin
> > while not Fin loop
> > select
> > accept Subir;
> > null; -- Some actions
> > or
> > accept Bajar;
> > null; -- Some actions
> > or
> > accept Parar;
> > null; -- Some actions
> > or
> > terminate;
> > end select;
> > end loop;
> > end Man_Motor1;
> >
> > I'm using GNAT 3.14 in a Windows XP platform. If I introduce a delay
> > before de end loop all it's OK, but what I want is that the task keep
> > sleeping till it has a call to an entry without consuming a lot of CPU
> > time.
> >
> > Can anybody help me?
> > Thank you very much.
> > _______________________________________________
> > comp.lang.ada mailing list
> > comp.lang.ada@ada.eu.org
> > http://ada.eu.org/mailman/listinfo/comp.lang.ada