From: Kilgallen@SpamCop.net (Larry Kilgallen)
Subject: Re: memory leakages with Ada?
Date: 20 Mar 2002 11:56:04 -0600
Date: 2002-03-20T11:56:04-06:00 [thread overview]
Message-ID: <FEQ$qP36pYsC@eisner.encompasserve.org> (raw)
In-Reply-To: 3C98C195.2030705@home.com
In article <3C98C195.2030705@home.com>, "Warren W. Gay VE3WWG" <ve3wwg@home.com> writes:
> Hyman Rosen wrote:
>
>> Larry Kilgallen wrote:
>>
>>> That code snippet _is_ in the caller's frame. Uppercase is the
>>> function being called. The bytes do get copied (obviously) to
>>> the caller's frame, but what you see above is the entire syntax
>>> for doing that.
>>
>> Yes, that's exactly what I was trying to say!
>> My point was that in the various C techniques,
>> the bytes of the result get constructed once,
>> and then don't have to be copied as part of
>> the function return, whereas returning a String
>> in Ada will involve copying the bytes.
>
> This can be a performance issue if the string is huge. But for
> mundane strings, the cost of copying it is much cheaper than the
> malloc/free cost, for example.
Certainly for huge strings, more attention to performance is required.
In programs with which I deal, however, huge data structures are quite
outnumbered by tiny data structures. Ignoring performance on the tiny
ones leaves more time to worry about performance on the hugh ones.
next prev parent reply other threads:[~2002-03-20 17:56 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-14 14:07 memory leakages with Ada? Calvin Ow
2002-03-14 14:31 ` Larry Kilgallen
2002-03-14 20:42 ` Nick Roberts
2002-03-14 21:11 ` Larry Kilgallen
2002-03-14 21:07 ` Anh_Vo
2002-03-14 20:12 ` Marin David Condic
2002-03-15 9:37 ` John McCabe
2002-03-15 12:55 ` Pat Rogers
2002-03-16 4:36 ` Will
2002-03-16 4:53 ` Pat Rogers
2002-03-16 12:21 ` Larry Kilgallen
2002-03-16 9:13 ` DPH
2002-03-16 14:38 ` Pat Rogers
2002-03-16 14:56 ` DPH
2002-03-16 15:51 ` Preben Randhol
2002-03-16 16:39 ` DPH
2002-03-16 19:51 ` Pat Rogers
2002-03-16 20:40 ` DPH
2002-03-17 19:31 ` Richard Riehle
2002-03-17 21:49 ` Pat Rogers
2002-03-17 22:02 ` Pat Rogers
2002-03-18 22:32 ` Randy Brukardt
2002-03-18 22:47 ` Pat Rogers
2002-03-18 7:22 ` Richard Riehle
2002-03-18 17:35 ` Marin David Condic
2002-03-17 16:26 ` Steve Doiel
2002-03-16 20:18 ` Robert A Duff
2002-03-16 20:36 ` DPH
2002-03-15 14:20 ` Marin David Condic
2002-03-18 17:54 ` Warren W. Gay VE3WWG
2002-03-18 19:54 ` Hyman Rosen
2002-03-18 20:34 ` Larry Kilgallen
2002-03-18 21:18 ` Hyman Rosen
2002-03-18 21:45 ` Larry Kilgallen
2002-03-20 1:19 ` Hyman Rosen
2002-03-20 17:06 ` Warren W. Gay VE3WWG
2002-03-20 17:56 ` Larry Kilgallen [this message]
2002-03-20 17:48 ` Marin David Condic
2002-03-22 0:25 ` Matthew Woodcraft
2002-03-22 5:10 ` Hyman Rosen
2002-03-18 22:18 ` Marin David Condic
2002-03-20 20:49 ` Bertrand Augereau
2002-03-21 4:31 ` Will
2002-03-15 16:00 ` Hyman Rosen
2002-03-15 21:59 ` Chad R. Meiners
2002-03-17 5:43 ` Kevin Cline
2002-03-17 7:22 ` Chad R. Meiners
2002-03-18 4:09 ` Kevin Cline
2002-03-18 16:54 ` Chad R. Meiners
2002-03-18 17:38 ` Warren W. Gay VE3WWG
2002-03-19 9:21 ` John McCabe
2002-03-19 17:11 ` Warren W. Gay VE3WWG
2002-03-19 17:16 ` Pat Rogers
2002-03-19 17:51 ` David C. Hoos
2002-03-19 18:20 ` Frank J. Lhota
2002-03-19 23:43 ` Mark Johnson
2002-03-20 15:09 ` Frank J. Lhota
2002-03-17 7:27 ` Hyman Rosen
2002-03-18 3:52 ` Kevin Cline
2002-03-18 5:37 ` Hyman Rosen
2002-03-15 17:41 ` Kevin Cline
2002-03-15 18:00 ` Marin David Condic
2002-03-15 18:08 ` Hyman Rosen
2002-03-16 10:15 ` Kevin Cline
2002-03-14 23:14 ` Kevin Cline
2002-03-15 3:20 ` Steve Doiel
2002-03-15 9:32 ` John McCabe
2002-03-15 15:46 ` Hyman Rosen
2002-03-15 17:29 ` Kevin Cline
2002-03-15 15:48 ` Jeffrey Carter
2002-03-16 3:05 ` Steve Doiel
2002-03-16 20:19 ` Jeffrey Carter
2002-03-15 17:25 ` Kevin Cline
2002-03-15 18:03 ` Hyman Rosen
2002-03-16 10:07 ` Kevin Cline
2002-03-17 3:00 ` Hyman Rosen
2002-03-15 9:27 ` John McCabe
-- strict thread matches above, loose matches on Subject: below --
2002-03-20 6:25 Christoph Grein
2002-03-20 16:35 ` Hyman Rosen
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