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=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,385c146dd3112519 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news1.google.com!postnews.google.com!q16g2000yqq.googlegroups.com!not-for-mail From: =?ISO-8859-1?Q?Hibou57_=28Yannick_Duch=EAne=29?= Newsgroups: comp.lang.ada Subject: Re: Private or public task ? Date: Tue, 9 Feb 2010 10:17:55 -0800 (PST) Organization: http://groups.google.com Message-ID: References: <38a0a3f9-b4a0-48f3-98c9-63b03fe03aca@q4g2000yqm.googlegroups.com> NNTP-Posting-Host: 79.91.74.81 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1265739475 11432 127.0.0.1 (9 Feb 2010 18:17:55 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 9 Feb 2010 18:17:55 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: q16g2000yqq.googlegroups.com; posting-host=79.91.74.81; posting-account=vrfdLAoAAAAauX_3XwyXEwXCWN3A1l8D User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; fr),gzip(gfe),gzip(gfe) Xref: g2news1.google.com comp.lang.ada:9043 Date: 2010-02-09T10:17:55-08:00 List-Id: On 9 f=E9v, 15:26, Jean-Pierre Rosen wrote: > protected procedures are bounded, because if you know the processing > time and the maximum number of tasks waiting, you know the WCET of the > procedure. Entries are unbounded, because they depend on a guard whose > condition can be anything. > > The "potentially blocking" phrase should be understood as really meaning > unbounded. =A0This all boils down to: "an operation with a bounded > execution time is not allowed to call an operation with an unbounded > execution time". > > Makes more sense? Yes, more sense. Bounded/Unbounded execution-time is better expressive. Side note. For peoples who like me didn't knew what is WCET : its "Worst Case Execution Time" (dixit Wikipedia).