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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,dea2d62ab1462538 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!postnews.google.com!f5g2000yqh.googlegroups.com!not-for-mail From: Maciej Sobczak Newsgroups: comp.lang.ada Subject: Re: Writing an Operating System in Ada Date: Tue, 12 Jan 2010 13:52:40 -0800 (PST) Organization: http://groups.google.com Message-ID: <414945fd-8ed5-4f42-a237-0685602332b3@f5g2000yqh.googlegroups.com> References: <8e9bc311-7540-40a1-b19e-49e93648c25c@s31g2000yqs.googlegroups.com> <9oyblld05omh$.1dzhmyoseeb7x$.dlg@40tude.net> NNTP-Posting-Host: 83.76.91.123 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: posting.google.com 1263333161 14613 127.0.0.1 (12 Jan 2010 21:52:41 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Tue, 12 Jan 2010 21:52:41 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: f5g2000yqh.googlegroups.com; posting-host=83.76.91.123; posting-account=bMuEOQoAAACUUr_ghL3RBIi5neBZ5w_S User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6,gzip(gfe),gzip(gfe) Xref: g2news1.google.com comp.lang.ada:8714 Date: 2010-01-12T13:52:40-08:00 List-Id: On 12 Sty, 20:56, "Dmitry A. Kazakov" wrote: > There should be no file system at all. If you have objects, I mean if you > do have them consistently all the way, then you do not need files. Make > objects persistent in the corresponding device, that gives you all > functionality of any file. No I/O is ever needed. Map the object into the > memory, call its operations, what else any program would have to do? Interact with other systems? You know, you might want to sometimes move your "persistent objects" to another machine. Did I mention that you might want to move you whole hard drive to another machine as well? :-) There is a reason why none of the pure-OO-OS-let's-do-it-correctly ever really took off. > The problem is that we followed the wrong path for too long. There is nothing wrong with that path, as it happens to be very pragmatic. -- Maciej Sobczak * www.msobczak.com * www.inspirel.com Database Access Library for Ada: www.inspirel.com/soci-ada