From: Georg Bauhaus <rm-host.bauhaus@maps.futureapps.de>
Subject: Re: Safety of unprotected concurrent operations on constant objects
Date: Wed, 07 May 2014 20:28:23 +0200
Date: 2014-05-07T20:28:23+02:00 [thread overview]
Message-ID: <536a7b47$0$6702$9b4e6d93@newsspool3.arcor-online.net> (raw)
In-Reply-To: <lyiophbhyz.fsf@pushface.org>
On 07/05/14 19:45, Simon Wright wrote:
> "G.B." <rm-dash-bau-haus@dash.futureapps.de> writes:
>
>> The "sequential checks" that handle tampering already add to Ada
>> containers being slow in comparison.
>
> To what?
GNAT's maps, for example, are slower than GNAT's own hash table
(the one that is not as easy to use as maps).
While Dmitry's "protected new" would be simple to use (if it
will work), I imagine containers that replace the defensive
checks for tampering etc. with contracts. The proof obligations
that follow will mean more work for users, but in return for
following the contract, concurrent reads can be safe and also
a little faster. At least the contract could make Element as
safe as reading array components in parallel.
next prev parent reply other threads:[~2014-05-07 18:28 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 8:42 Safety of unprotected concurrent operations on constant objects Natasha Kerensikova
2014-05-03 13:43 ` sbelmont700
2014-05-03 20:54 ` Natasha Kerensikova
2014-05-03 21:40 ` Simon Wright
2014-05-04 0:28 ` Jeffrey Carter
2014-05-04 7:46 ` Natasha Kerensikova
2014-05-04 8:06 ` Dmitry A. Kazakov
2014-05-04 15:18 ` sbelmont700
2014-05-04 15:57 ` Natasha Kerensikova
2014-05-04 18:30 ` sbelmont700
2014-05-04 19:34 ` Dmitry A. Kazakov
2014-05-05 19:04 ` Brad Moore
2014-05-05 21:23 ` Brad Moore
2014-05-04 21:44 ` Shark8
2014-05-05 8:39 ` Simon Wright
2014-05-05 15:11 ` Brad Moore
2014-05-05 16:36 ` Dmitry A. Kazakov
2014-05-06 6:00 ` Brad Moore
2014-05-06 8:11 ` Dmitry A. Kazakov
2014-05-06 8:48 ` Alejandro R. Mosteo
2014-05-06 9:49 ` G.B.
2014-05-06 12:19 ` Dmitry A. Kazakov
2014-05-06 12:58 ` G.B.
2014-05-06 15:00 ` Dmitry A. Kazakov
2014-05-06 16:24 ` G.B.
2014-05-06 19:14 ` Dmitry A. Kazakov
2014-05-07 6:49 ` Georg Bauhaus
2014-05-07 7:40 ` Dmitry A. Kazakov
2014-05-07 11:25 ` G.B.
2014-05-07 12:14 ` Dmitry A. Kazakov
2014-05-07 13:45 ` G.B.
2014-05-07 14:08 ` Dmitry A. Kazakov
2014-05-07 17:45 ` Simon Wright
2014-05-07 18:28 ` Georg Bauhaus [this message]
2014-05-07 4:59 ` J-P. Rosen
2014-05-07 7:30 ` Dmitry A. Kazakov
2014-05-07 8:26 ` J-P. Rosen
2014-05-07 9:09 ` Dmitry A. Kazakov
2014-05-07 11:29 ` J-P. Rosen
2014-05-07 12:36 ` Safety of unprotected concurrent operations on constant objects (was: Safety of unprotected concurrent operations on constant objects) Dmitry A. Kazakov
2014-05-07 14:04 ` Safety of unprotected concurrent operations on constant objects G.B.
2014-05-08 4:12 ` Brad Moore
2014-05-08 8:20 ` Dmitry A. Kazakov
2014-05-08 10:30 ` G.B.
2014-05-09 13:14 ` Brad Moore
2014-05-09 19:00 ` Dmitry A. Kazakov
2014-05-10 12:30 ` Brad Moore
2014-05-10 20:27 ` Dmitry A. Kazakov
2014-05-11 6:56 ` Brad Moore
2014-05-11 18:01 ` Brad Moore
2014-05-12 8:13 ` Dmitry A. Kazakov
2014-05-13 4:50 ` Brad Moore
2014-05-13 8:56 ` Dmitry A. Kazakov
2014-05-13 15:01 ` Brad Moore
2014-05-13 15:38 ` Brad Moore
2014-05-13 16:46 ` Simon Wright
2014-05-13 19:15 ` Dmitry A. Kazakov
2014-05-13 16:08 ` Dmitry A. Kazakov
2014-05-13 20:27 ` Randy Brukardt
2014-05-14 4:30 ` Shark8
2014-05-14 21:37 ` Randy Brukardt
2014-05-14 21:56 ` Robert A Duff
2014-05-15 1:21 ` Shark8
2014-05-14 14:30 ` Brad Moore
2014-05-15 8:03 ` Dmitry A. Kazakov
2014-05-15 13:21 ` Robert A Duff
2014-05-15 14:27 ` Dmitry A. Kazakov
2014-05-15 15:53 ` Robert A Duff
2014-05-15 16:30 ` Dmitry A. Kazakov
2014-10-26 17:11 ` Jacob Sparre Andersen
2014-05-08 19:52 ` Randy Brukardt
2014-05-06 16:22 ` Robert A Duff
2014-05-06 19:07 ` Dmitry A. Kazakov
2014-05-08 5:03 ` Brad Moore
2014-05-08 12:03 ` Brad Moore
2014-05-08 19:57 ` Randy Brukardt
2014-05-09 2:58 ` Brad Moore
2014-05-05 20:29 ` Natasha Kerensikova
2014-05-08 3:41 ` Randy Brukardt
2014-05-08 9:07 ` Natasha Kerensikova
2014-05-08 19:35 ` Randy Brukardt
2014-05-08 3:12 ` Randy Brukardt
2014-05-05 22:30 ` Brad Moore
2014-05-04 16:04 ` Peter Chapin
2014-05-04 18:07 ` Natasha Kerensikova
2014-05-04 18:55 ` Jeffrey Carter
2014-05-04 19:36 ` Simon Wright
2014-05-04 20:29 ` Jeffrey Carter
2014-05-05 22:46 ` Brad Moore
2014-05-04 20:25 ` Shark8
2014-05-04 23:33 ` sbelmont700
2014-05-05 7:38 ` Dmitry A. Kazakov
2014-05-08 3:45 ` Randy Brukardt
2014-05-08 3:19 ` Randy Brukardt
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