From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: function Is_Open (File : File_Type) return Boolean; :Text_io Date: Thu, 29 Oct 2015 14:01:15 +0100 Organization: A noiseless patient Spider Message-ID: References: <87twpd2qlo.fsf@theworld.com> <1pj15r7pul7f1.15qgdyrc8k133$.dlg@40tude.net> <87pp0030c1.fsf@theworld.com> <135hiczk56x02.1xixcme8btbl4.dlg@40tude.net> <1dzlgoh4u2j7t$.1un3dfy0oeigd$.dlg@40tude.net> <190shqocxd87d$.1d68ghgqgbvfs$.dlg@40tude.net> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 29 Oct 2015 12:59:05 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="45bffd6a911624777cad79aac3181090"; logging-data="21344"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/HkSmmtlfJpq3v8/0Y5kNA" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 In-Reply-To: Cancel-Lock: sha1:NtS5WGh7+qzNCR/Y/S+doQ3ThXs= Xref: news.eternal-september.org comp.lang.ada:28113 Date: 2015-10-29T14:01:15+01:00 List-Id: Le 29/10/2015 12:47, G.B. a écrit : > Even so, I think that an implementation of Ada could "outsource" > assertion checking to some read-only copy of the program that > is running on a twin processor, suitably connected, so as to > reduce run-time effects of assertion checking. IIRC, the old Rational R-1000 did that for constraints: there was a constraint-checking co-processor running in parallel with the main CPU (and raising C_E in the main CPU when appropriate). -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr