From: tmoran@acm.org
Subject: Re: is exception when others => null; smart?
Date: Sat, 26 Oct 2002 07:47:11 GMT
Date: 2002-10-26T07:47:11+00:00 [thread overview]
Message-ID: <3Mru9.109492$%d2.41952@sccrnsc01> (raw)
In-Reply-To: wcclm4mk19r.fsf@shell01.TheWorld.com
> but finalization is *very* expensive in most Ada compilers,
A loop calling a procedure
procedure p(i : in integer) is
x : a_record_with_field_n;
begin
if x.n /= 0 then global_junk := 1;end if;
end p;
took 12 nanoseconds on my 866Mhz machine when "x" was an ordinary
small record, but nearly 400 nanoseconds when x was controlled and had
an explicit Finalize procedure. Similar times with two different
compilers.
In many contexts objects to be Controlled last long enough that
0.4 microseconds to finalize one is not fatally expensive.
next prev parent reply other threads:[~2002-10-26 7:47 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-24 14:03 is exception when others => null; smart? Preben Randhol
2002-10-24 14:25 ` David C. Hoos, Sr.
2002-10-24 14:28 ` Preben Randhol
2002-10-24 14:38 ` Per Sandbergs
2002-10-25 15:04 ` Robert A Duff
2002-10-25 20:41 ` Dale Stanbrough
2002-10-26 23:04 ` Robert A Duff
2002-10-26 7:47 ` tmoran [this message]
2002-10-24 16:39 ` Mark Biggar
2002-10-24 20:06 ` Robert A Duff
2002-10-24 20:23 ` Wes Groleau
2002-10-25 1:16 ` Jeffrey Carter
2002-10-25 10:10 ` In case statment? (was Re: is exception when others => null; smart?) Preben Randhol
2002-10-25 14:59 ` Robert A Duff
2002-10-25 15:06 ` Preben Randhol
2002-10-29 18:23 ` Peter Richtmyer
2002-10-30 2:52 ` Steven Deller
2002-10-30 8:58 ` Anders Wirzenius
2002-10-30 19:57 ` Peter Richtmyer
2002-10-31 7:02 ` Anders Wirzenius
2002-10-30 9:36 ` Lutz Donnerhacke
2002-10-30 19:44 ` Peter Richtmyer
2002-10-30 13:28 ` Marin David Condic
2002-10-30 20:34 ` Robert Spooner
2002-10-31 12:40 ` In case statment? (was Re: is exception when others => null;smart?) Marin David Condic
2002-10-25 17:13 ` In case statment? <...> when others John Woodruff
2002-10-27 21:03 ` In case statment? (was Re: is exception when others => null; smart?) Ze Administrator
2002-10-28 10:04 ` Preben Randhol
2002-10-28 20:05 ` Wes Groleau
2002-10-30 11:31 ` Preben Randhol
2002-10-28 12:32 ` In case statment? (was Re: is exception when others => null;smart?) Adrian Hoe
2002-10-24 20:11 ` is exception when others => null; smart? Simon Wright
2002-10-24 21:22 ` Larry Kilgallen
2002-10-24 20:03 ` Robert A Duff
2002-10-25 1:49 ` SteveD
2002-10-25 3:48 ` Dennis Lee Bieber
2002-10-26 11:34 ` Preben Randhol
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