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!news.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Simon Clubley Newsgroups: comp.lang.ada Subject: [OT] Ravenscar (the place, not profile), was: Re: STM32F4 Discovery, communication and libraries Date: Fri, 29 Aug 2014 16:59:35 +0000 (UTC) Organization: A noiseless patient Spider Message-ID: References: <60a42dc6-d8d0-4432-ae5a-86de18b82840@googlegroups.com> <5kkrv9hejn2qhdckkeo8lidkbh3bkme1gn@4ax.com> <5b91313c-acf9-4a6e-b157-6ba7c8021567@googlegroups.com> <0513ad07-6fbe-463a-be6f-097cd5113f52@googlegroups.com> <4f1ec65a-d66a-40bf-a0d6-278fde206e70@googlegroups.com> <1cd027f2-a0e0-4206-b989-4aed2090cde8@googlegroups.com> <1ibla8yyj3ibm$.1lz0cmeu8ptp2.dlg@40tude.net> Injection-Date: Fri, 29 Aug 2014 16:59:35 +0000 (UTC) Injection-Info: mx05.eternal-september.org; posting-host="e458ff8b81bc0c159989eb0e36c6e372"; logging-data="29988"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/lsMotZ1HBTBlJujMdQoAw/NOqeYxRfrE=" User-Agent: slrn/0.9.8.1 (VMS/Multinet) Cancel-Lock: sha1:s8akvG7rE1AKgLBjfx6YbDHtoaY= Xref: news.eternal-september.org comp.lang.ada:21992 Date: 2014-08-29T16:59:35+00:00 List-Id: On 2014-08-29, Niklas Holsti wrote: > On 14-08-29 10:34 , Dmitry A. Kazakov wrote: > >> Ravenscar tasking profile has serious constraints preventing this. The >> nature of the constraints is to statically ensure schedulability. > > That's what they (= the people whoe defined the profile) often say, but > it is not quite true. Even within Ravenscar constraints, one can build > very dynamic task interactions, which is nice for implementing stuff in > a Ravenscar system, but which makes schedulability analysis difficult. > I have got to ask: how did Ravenscar ever get chosen for an Ada meeting place ? I can understand a place like (say) York, or another university town/city, but of all the places on the planet, how did a little coastal "town that never was" ever get chosen for an Ada meeting ? One very curious person, Simon. PS: I'm from Yorkshire so I know the area well and I have also walked through Ravenscar while doing a walk so I know the place personally. -- Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP Microsoft: Bringing you 1980s technology to a 21st century world