From: "Grein, Christoph" <christoph.grein@eurocopter.com>
Subject: Re: new_line in a put_line
Date: Thu, 5 Dec 2002 07:28:41 +0100 (MET)
Date: 2002-12-05T07:28:41+01:00 [thread overview]
Message-ID: <mailman.1039070162.7388.comp.lang.ada@ada.eu.org> (raw)
> > >> procedure Put_Line (Text : String) is
> > >> Get_It : Lock (Write_Mutex'Access);
> > >> begin
> > >> Ada.Text_IO.Put_Line (Text);
> > >> end Put_Line;
> > >
> > >Something inside me rebels at using side-effects from a declaration
> > >like that.
> >
> > Right, right. It is also my opinion [there was a thread regarding this
> > subject in c.l.a] that using unused (:-)) objects probably indicates a
> > design problem.
>
> That's what pragma Unreferenced (in GNAT) is for; it documents that
> the object is declared only for the hidden effects of Initialize and
> Finalize.
>
> Assuming Lock is a controlled type, that releases the lock in
> Finalize, this is an excellent design.
This should only be necessary for objects of not limited controlled types. As I said,
limited controlled objects must not be optimized away.
next reply other threads:[~2002-12-05 6:28 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-05 6:28 Grein, Christoph [this message]
2002-12-05 14:19 ` new_line in a put_line Stephen Leake
-- strict thread matches above, loose matches on Subject: below --
2002-12-05 6:16 Grein, Christoph
2002-12-05 9:44 ` Dmitry A. Kazakov
2002-12-04 10:03 Grein, Christoph
2002-12-03 11:52 Grein, Christoph
2002-12-04 9:39 ` Fraser Wilson
2002-12-02 5:36 Vlad
2002-12-02 9:47 ` Preben Randhol
2002-12-02 17:04 ` Frank J. Lhota
2002-12-05 11:10 ` Preben Randhol
2002-12-02 10:14 ` Dmitry A. Kazakov
2002-12-02 14:57 ` Matthew Heaney
2002-12-03 11:33 ` Fraser Wilson
2002-12-03 15:01 ` Dmitry A. Kazakov
2002-12-04 9:31 ` Fraser Wilson
2002-12-04 14:10 ` Dmitry A. Kazakov
2002-12-04 15:23 ` Robert A Duff
2002-12-04 16:15 ` Dmitry A. Kazakov
2002-12-04 18:11 ` tmoran
2002-12-04 20:21 ` Simon Wright
2002-12-05 9:36 ` Dmitry A. Kazakov
2002-12-05 22:40 ` tmoran
2002-12-04 15:25 ` Stephen Leake
2002-12-04 16:55 ` Jeffrey Carter
2002-12-04 17:24 ` Stephen Leake
2002-12-04 17:43 ` Warren W. Gay VE3WWG
2002-12-05 1:31 ` Jeffrey Carter
2002-12-05 18:11 ` Warren W. Gay VE3WWG
2002-12-02 15:49 ` Robert A Duff
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