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: 103376,6394e5e171f847d1 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-09-06 00:00:11 PST Path: archiver1.google.com!newsfeed.google.com!sn-xit-02!supernews.com!newsfeed.direct.ca!look.ca!feed2.news.rcn.net!rcn!newsfeed1.earthlink.net!newsfeed2.earthlink.net!newsfeed.earthlink.net!news.mindspring.net!not-for-mail From: "Brian Catlin" Newsgroups: comp.lang.ada Subject: Re: Ada OS Kernel features Date: Wed, 5 Sep 2001 23:59:11 -0700 Organization: Sannas Consulting Message-ID: <9n76s4$pft$1@slb3.atl.mindspring.net> References: <9n4euv$t9m$1@slb6.atl.mindspring.net> <3B964C7A.BC04374E@icn.siemens.de> <9n5o9n$37a$1@slb7.atl.mindspring.net> <3%ul7.3362$9z1.440040@news6-win.server.ntlworld.com> <9n61dg$h3k$1@slb5.atl.mindspring.net> NNTP-Posting-Host: a5.f7.e8.26 X-Server-Date: 6 Sep 2001 06:59:16 GMT X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Xref: archiver1.google.com comp.lang.ada:12784 Date: 2001-09-06T06:59:16+00:00 List-Id: [...snip...snip...] > It is possible (and has been done) to associate privileges with the > memory segment you are currently executing in, not which process you > are running in. In this way it is possible to get both speed and > safety, by having special libraries with sufficient privileges. Kind > of like the monitor/protected object idea, which lets you execute > code within it without process switching. Interesting. Do you have any references to any implementations? This seems that it would work for a small system, such as an RTOS, but I suspect not for a large general-purpose operating system. -Brian