From: Jacob Sparre Andersen <sparre@hugin.crs4.it>
Subject: Re: [newbie question] tasks and protected types
Date: 29 Apr 2005 13:23:10 +0200
Date: 2005-04-29T13:23:10+02:00 [thread overview]
Message-ID: <m2y8b1bzdt.fsf@hugin.crs4.it> (raw)
In-Reply-To: 42720DCD.6030304@mailinator.com
Alex R. Mosteo wrote:
> Jacob Sparre Andersen wrote:
> > protected body Printer is
> > procedure Put_Line (Item : in String) is
> > begin
> > Ada.Text_IO.Put_Line (Item => Item);
> > Ada.Text_IO.Flush;
> > end Put_Line;
> > end Printer;
>
> Isn't this considered a blocking operation?
I think I have heard something like that too, but I have not been able
to find it written down anywhere.
> I've read that it is not something to avoid in practice, but this
> advice can be specific for GNAT.
I only tested my version with GNAT, so I can't disprove that.
If calls to Ada.Text_IO _are_ potentially blocking operations, that
means that one has to move the calls to a task. But from a logical
point of view, using a protected object seems like the right way to do
it.
Jacob
--
A password should be like a toothbrush. Use it every day;
change it regularly; and DON'T share it with friends.
next prev parent reply other threads:[~2005-04-29 11:23 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-29 4:04 [newbie question] tasks and protected types fabio de francesco
2005-04-29 7:25 ` tmoran
2005-04-29 9:43 ` Jacob Sparre Andersen
2005-04-29 10:34 ` Alex R. Mosteo
2005-04-29 11:23 ` Jacob Sparre Andersen [this message]
2005-04-29 12:18 ` Adrien Plisson
2005-04-29 12:45 ` Ada.Text_IO and protected objects (Was: [newbie question] tasks and protected types) Jacob Sparre Andersen
2005-04-29 13:22 ` Poul-Erik Andreasen
2005-04-29 14:26 ` Egil H. H�vik
2005-04-29 20:28 ` Jacob Sparre Andersen
2005-04-29 20:39 ` Randy Brukardt
2005-04-29 21:23 ` Lionel Draghi
2005-04-29 22:11 ` fabio de francesco
2005-04-30 3:45 ` Jeffrey Carter
2005-04-30 7:21 ` Lionel Draghi
2005-05-02 8:11 ` Jean-Pierre Rosen
2005-04-30 12:47 ` Ada.Text_IO and protected objects Stephen Leake
2005-04-29 21:57 ` Ada.Text_IO and protected objects (Was: [newbie question] tasks and protected types) fabio de francesco
2005-04-30 9:07 ` Ada.Text_IO and protected objects Jacob Sparre Andersen
2005-04-30 10:21 ` Dmitry A. Kazakov
2005-05-02 10:41 ` fabio de francesco
2005-05-02 14:10 ` Jacob Sparre Andersen
2005-05-02 16:29 ` fabio de francesco
2005-04-29 15:23 ` Ada.Text_IO and protected objects (Was: [newbie question] tasks and protected types) Björn Lundin
2005-04-29 12:54 ` [newbie question] tasks and protected types Alex R. Mosteo
2005-04-29 10:47 ` fabio de francesco
2005-04-29 11:33 ` Jacob Sparre Andersen
2005-04-29 12:55 ` Alex R. Mosteo
2005-04-29 14:06 ` Egil H. H�vik
2005-04-29 14:12 ` Egil H. H�vik
2005-04-29 16:23 ` Robert A Duff
2005-04-29 20:19 ` Jacob Sparre Andersen
2005-04-30 11:58 ` Simon Wright
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