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,e7151167e0767ecc 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!nntp.giganews.com!local1.nntp.dca.giganews.com!nntp.megapath.net!news.megapath.net.POSTED!not-for-mail NNTP-Posting-Date: Tue, 07 Sep 2004 18:58:18 -0500 From: "Randy Brukardt" Newsgroups: comp.lang.ada References: <8429999a.0408231027.2850e800@posting.google.com> <5ad0dd8a.0408302222.56282d6f@posting.google.com> <4135498c_1@news.tm.net.my> <5ad0dd8a.0409040738.3fff41b8@posting.google.com> <5ad0dd8a.0409060956.7fe744f6@posting.google.com> Subject: Re: Feasibility of using Ada in new development Date: Tue, 7 Sep 2004 18:59:11 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 Message-ID: NNTP-Posting-Host: 64.32.209.38 X-Trace: sv3-22ph9S7Rh2lGzu+NzShRxVfHDmAwIHyCfJsZvL1tKHWjsMoQ9N35XHSDrb6tmqDipj5KvVO+LMA3YL5!eHmY23ZEncjJqnpJvCoZDOYO7p7uPvtH8kF4e29RWKCRzGPhq6TDEQMiDsdz4ZvTNDXFWeYxF88S X-Complaints-To: abuse@megapath.net X-DMCA-Complaints-To: abuse@megapath.net X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.13 Xref: g2news1.google.com comp.lang.ada:3457 Date: 2004-09-07T18:59:11-05:00 List-Id: "Wojtek Narczynski" wrote in message news:5ad0dd8a.0409060956.7fe744f6@posting.google.com... ... > I reason that you have not looked at the material under the links I > sent. While Ada tasks and protected objects provide convenient > semantics, their GNAT implementation with task = os level thread does > not yield desired performance under certain applications. In this > situation for C there are libraries of cooperative threads with > resource aware scheduling, for Ada there isn't anything comparable. This is how tasking works in the Janus/Ada compiler. So, clearly there is something comparable available. But I wouldn't go so far as to call it high performance (it was designed to make tasking available on as many targets as possible). Randy.