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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: GNAT's stack checking in Ubuntu 9.04 (and Shootout regex-dna)
Date: Tue, 04 Aug 2009 11:38:03 -0400
Date: 2009-08-04T11:38:03-04:00	[thread overview]
Message-ID: <wccmy6fio84.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: 4a77fcc3$0$30229$9b4e6d93@newsspool1.arcor-online.net

Georg Bauhaus <rm.tsoh.plus-bug.bauhaus@maps.futureapps.de> writes:

> More guesswork: Is an empty Unbounded_String a heavy
> construct?

If you're trying to make a program fast, you almost certainly don't want
to be using unbounded strings, or any other controlled types.  At least
not in any time-critical parts.

Controlled types use a lot of memory, and are quite slow.

AdaCore is working on improving this situation, but controlled types
will always be somewhat heavy.

- Bob



  parent reply	other threads:[~2009-08-04 15:38 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-03 22:54 GNAT's stack checking in Ubuntu 9.04 (and Shootout regex-dna) Georg Bauhaus
2009-08-03 22:56 ` Georg Bauhaus
2009-08-04  7:50   ` Ludovic Brenta
2009-08-04  9:17     ` Georg Bauhaus
2009-08-04  9:58       ` Vadim Godunko
2009-08-04 10:44         ` Georg Bauhaus
2009-08-04 12:30           ` Vadim Godunko
2009-08-04 14:15             ` Georg Bauhaus
2009-08-04 22:20         ` Egil
2009-08-04 15:38       ` Robert A Duff [this message]
2009-08-04 11:59 ` Brian Drummond
2009-08-04 14:18   ` Georg Bauhaus
2009-08-09 19:13   ` Georg Bauhaus
2009-08-10 13:10     ` jonathan
2009-08-10 20:12     ` jonathan
2009-08-10 20:29       ` Ludovic Brenta
2009-08-10 23:34       ` Georg Bauhaus
2009-08-11 20:02         ` jonathan
2009-08-11 21:19           ` jonathan
2009-08-11 21:38           ` Georg Bauhaus
2009-08-11  0:27       ` Georg Bauhaus
2009-08-11 19:05         ` jonathan
2009-08-12  9:32           ` Ludovic Brenta
2009-08-12 16:37             ` jonathan
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