From -4085159081217327307 X-Google-Thread: f78e5,480a31feed3c6a1b X-Google-Attributes: gidf78e5,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!news2.google.com!proxad.net!newsfeed.stueberl.de!newsfeed.vmunix.org!peer-uk.news.demon.net!kibo.news.demon.net!news.demon.co.uk!demon!stump.algebra.com!devnull From: SeeWebsiteForEmail@moderncppdesign.com ("Andrei Alexandrescu (See Website For Email)") Newsgroups: comp.std.c++ Subject: Re: boost::shared_ptr revisited again Date: Wed, 8 Jun 2005 05:57:42 GMT Organization: Computer Science & Engineering, U of Washington, Seattle Lines: 34 Sender: mail2news@demon.net Approved: fjh@cs.mu.oz.au (Fergus Henderson , moderator of comp.std.c++) Message-ID: References: <4299DE64.40403@poczta.onet.pl> <3g55jqFajuhcU1@news.dfncis.de> NNTP-Posting-Host: news.news.demon.net Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.demon.co.uk 1118210272 24648 158.152.254.254 (8 Jun 2005 05:57:52 GMT) X-Complaints-To: abuse@demon.net NNTP-Posting-Date: Wed, 8 Jun 2005 05:57:52 +0000 (UTC) X-Nntp-Posting-Host: parakeet.ee.washington.edu X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050317) X-Accept-Language: en-us, en X-Virus-Scanned: amavisd-new at cs.mu.OZ.AU X-Path: comp-std-cpp-robomod!not-for-mail X-Received: (from fjh@localhost) by mulga.cs.mu.OZ.AU (8.12.10+Sun/8.12.9/Submit) id j585vgr7028018; Wed, 8 Jun 2005 15:57:42 +1000 (EST) X-Authentication-Warning: mulga.cs.mu.OZ.AU: fjh set sender to devnull@stump.algebra.com using -f X-Newsgroups: comp.std.c++ Xref: g2news1.google.com comp.std.c++:5025 Pete Becker wrote: > Andrei Alexandrescu (See Website For Email) wrote: > >> Pete Becker wrote: >> >>> Nope. Java traps them, and throws a NullPointerException. The price >>> of doing that, of course, is runtime pointer checks. >> >> Not always. Some implementations implement the access violation trap >> and translate it to a Java exception. For non-null pointers, that >> incurs no runtime cost. >> > > Always. The implementation you describe is a runtime check. Not always. I wonder how one could refer to something I describe, which I myself haven't described. :o) Anyway... see http://www.prolangs.rutgers.edu/refs/docs/kawahito-asplos00.pdf and the bibliography references 2 (the Jalapeno VM), 13 (IBM's JIT), and 15 (LaTTe). Andrei --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.jamesd.demon.co.uk/csc/faq.html ]