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=-2.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, MAILING_LIST_MULTI autolearn=unavailable autolearn_force=no version=3.4.4 X-Google-Thread: 103376,8de7eedad50552f1 X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!oleane.net!oleane!freenix!enst.fr!melchior!cuivre.fr.eu.org!melchior.frmug.org!not-for-mail From: Marius Amado Alves Newsgroups: comp.lang.ada Subject: Re: Ada bench : count words Date: Tue, 22 Mar 2005 16:30:00 +0000 Organization: Cuivre, Argent, Or Message-ID: References: <87vf7n5njs.fsf@code-hal.de> <423f5813$0$9224$9b4e6d93@newsread4.arcor-online.net> <18arnvu705ly4$.1wz6ybz1jt70y$.dlg@40tude.net> <1q9cx4jt7802s.k45m6mcntl87$.dlg@40tude.net> NNTP-Posting-Host: lovelace.ada-france.org Mime-Version: 1.0 (Apple Message framework v619.2) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit X-Trace: melchior.cuivre.fr.eu.org 1111509028 94805 212.85.156.195 (22 Mar 2005 16:30:28 GMT) X-Complaints-To: usenet@melchior.cuivre.fr.eu.org NNTP-Posting-Date: Tue, 22 Mar 2005 16:30:28 +0000 (UTC) To: comp.lang.ada@ada-france.org Return-Path: In-Reply-To: X-Mailer: Apple Mail (2.619.2) X-OriginalArrivalTime: 22 Mar 2005 16:30:04.0481 (UTC) FILETIME=[6702F310:01C52EFC] X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at ada-france.org X-BeenThere: comp.lang.ada@ada-france.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Gateway to the comp.lang.ada Usenet newsgroup" List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Xref: g2news1.google.com comp.lang.ada:9738 Date: 2005-03-22T16:30:00+00:00 > Text_IO is pretty broken, from both a usability perspective and an > efficiency perspective. I normally avoid it, and use pragma Import on > the C routines (open, read, etc). Suitably wrapped in a clean > interface, of course. Bob, would you contribute an efficient Read procedure to this benchmark? The speed difference is greater than I thought. Ada (with Text_IO) is about 10 times slower than the C benchmark. I had forgotten to compile the C benchmark with -O3. This would be dandy: procedure Read (Buffer : out String; Length : out Natural); reading from Standard_Input (this is required). Implemented with the C library if necessary (this is allowed, I think). (I know C well, but I'll be damned if I ever understand the view of C in Interfaces.C) Thanks a lot.