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-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,fd63afa4dc364b7e X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-03-17 01:38:53 PST Newsgroups: comp.lang.ada Path: nntp.stanford.edu!newsfeed.stanford.edu!canoe.uoregon.edu!logbridge.uoregon.edu!newsengine.sol.net!newspump.sol.net!nntp.msen.com!uunet!ash.uu.net!world!bobduff From: Robert A Duff Subject: Re: Better support for garbage collection Sender: bobduff@world.std.com (Robert A Duff) Message-ID: Date: Thu, 15 Mar 2001 14:18:14 GMT References: <98m938$2iod0$1@ID-25716.news.dfncis.de> <87bsr46kxv.fsf@deneb.enyo.de> Organization: The World Public Access UNIX, Brookline, MA X-Newsreader: Gnus v5.3/Emacs 19.34 Xref: nntp.stanford.edu comp.lang.ada:91479 Date: 2001-03-15T14:18:14+00:00 List-Id: Florian Weimer writes: > This is solved by double indirection. Access values are not > addresses, but opaque handles. The compiler is expected to lock the > handle to obtain the actual address. Ah, so it's sort of like the original implementation of Smalltalk-80 -- an array of addresses of "instances", and a pointer to an instance actually contains the array index? - Bob