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,FREEMAIL_FROM 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!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: Victor Porton Newsgroups: comp.lang.ada Subject: Re: Feature suggestion: different task schedules Date: Sat, 15 Jul 2017 14:30:48 +0300 Organization: Aioe.org NNTP Server Message-ID: References: NNTP-Posting-Host: H5rnIG5HjBZt1DRp9NYOMQ.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Complaints-To: abuse@aioe.org User-Agent: KNode/4.14.10 X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:47419 Date: 2017-07-15T14:30:48+03:00 List-Id: Surprisingly low response to my idea. Should we have it in future Ada? (My opinion is "yes".) Victor Porton wrote: > I propose for Ada 2020 to add the following pragmas (and corresponding > aspects) for tasks and task types: > > pragma Schedule=>Thread; > > the regular task. > > pragma Schedule=>Manual; > > the task runs only when a protected entry is called and stops at the next > accept statement. > > This is usually the fastest mode in the case of one-core system. > > pragma Schedule=>Sometimes; > > the task run in either of two above modes (with tasks of a task type not > necessarily scheduled in the same way (some may be Thread and some > Manual)). > > The schedule mode may be chosen dependently on free CPU cores availability > to make it the fastest. > > pragma Schedule=>Dynamic; > > a task with this schedule may switch between Thread and Manual mode at any > moment of time. This is useful to use CPU cores effectively. > > What do you think? > -- Victor Porton - http://portonvictor.org