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=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,e44790cdcea9da82 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!news.glorb.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!elnk-atl-nf1!newsfeed.earthlink.net!stamper.news.atl.earthlink.net!newsread3.news.atl.earthlink.net.POSTED!14bb18d8!not-for-mail Sender: mheaney@MHEANEYX200 Newsgroups: comp.lang.ada Subject: Re: Problem with -gnatt References: <41651D37.4030805@mailinator.com> <2skt9qF1ljjdtU1@uni-berlin.de> <4165472D.2030704@mailinator.com> <416573FA.4010003@mailinator.com> <87k6u2mj08.fsf@insalien.org> <4166538E.6090907@mailinator.com> <41702af7$0$91003$39cecf19@news.twtelecom.net> <417377F7.7050506@mailinator.com> <4173f0ed$0$91003$39cecf19@news.twtelecom.net> <417409AB.8040702@mailinator.com> From: Matthew Heaney Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 19 Oct 2004 03:08:53 GMT NNTP-Posting-Host: 64.185.133.124 X-Complaints-To: abuse@earthlink.net X-Trace: newsread3.news.atl.earthlink.net 1098155333 64.185.133.124 (Mon, 18 Oct 2004 20:08:53 PDT) NNTP-Posting-Date: Mon, 18 Oct 2004 20:08:53 PDT Organization: EarthLink Inc. -- http://www.EarthLink.net Xref: g2news1.google.com comp.lang.ada:5427 Date: 2004-10-19T03:08:53+00:00 List-Id: Brian May writes: > Also, I have read that implementing a semaphore using a protected type > isn't very efficient, as protected types weren't designed for this > purpose. That may be true, but it doesn't change the fact that the RM says protected operations should be "short." > Matthew> do using a controlled helper type, as in my example), > Matthew> then there's no reason not to use a semaphore. > > This won't prevent mistakes where you forget to lock the semaphore. The Control_Type certainly *will* prevent such mistakes.