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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,7d5642dc1158588b X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!postnews.google.com!s48g2000cws.googlegroups.com!not-for-mail From: matteo.bordin@gmail.com Newsgroups: comp.lang.ada Subject: Re: Ravenscar - program termination Date: 30 Jan 2007 06:24:44 -0800 Organization: http://groups.google.com Message-ID: <1170167084.668967.110840@s48g2000cws.googlegroups.com> References: <87zm81txs1.fsf@ludovic-brenta.org> NNTP-Posting-Host: 147.162.22.76 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Trace: posting.google.com 1170167103 11821 127.0.0.1 (30 Jan 2007 14:25:03 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 30 Jan 2007 14:25:03 +0000 (UTC) In-Reply-To: User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.9) Gecko/20061206 Firefox/1.5.0.9,gzip(gfe),gzip(gfe) Complaints-To: groups-abuse@google.com Injection-Info: s48g2000cws.googlegroups.com; posting-host=147.162.22.76; posting-account=F0PVCw0AAABbUMNt6pX6q_ZNh55rRxT7 Xref: g2news2.google.com comp.lang.ada:8707 Date: 2007-01-30T06:24:44-08:00 List-Id: > Sorry, but I don't see anything in the concept of high-integrity > software that would make it a norm. High-integrity software is a set of > quality objectives, whereas infinite loops are (or aren't) part of > system requirements. These should stay independent, even though I > understand that expectations for both often come in pairs. The Ravenscar profile is aimed to high-integrity real-time systems. A static set of working tasks is a requirement to perform sound feasibility analysis (at least within a given execution mode). > Still, it looks like I cannot say: > > pragma Profile(Ravenscar); > > in my Hello World program even though this program meets the objectives > of the profile. That's not fair! :-) On real-time kernels supporting the Ravenscar profile, even the main procedure must contain an infinite loop. Regards, M.B.