From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HTML_FONT_LOW_CONTRAST,HTML_IMAGE_ONLY_24,HTML_MESSAGE, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=no autolearn_force=no version=3.4.4 Received: (qmail 15180 invoked from network); 24 Jul 2021 19:42:49 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 24 Jul 2021 19:42:49 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 58E919CAC1; Sun, 25 Jul 2021 05:42:46 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 5D4979CAA5; Sun, 25 Jul 2021 05:42:14 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="Ct1w9gdv"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 56BC99CAA5; Sun, 25 Jul 2021 05:42:11 +1000 (AEST) Received: from mail-qk1-f169.google.com (mail-qk1-f169.google.com [209.85.222.169]) by minnie.tuhs.org (Postfix) with ESMTPS id 500EC9CAA4 for ; Sun, 25 Jul 2021 05:42:09 +1000 (AEST) Received: by mail-qk1-f169.google.com with SMTP id f22so4876004qke.10 for ; Sat, 24 Jul 2021 12:42:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccc.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=DRH5Y/RahRQjrZlZd0c7fbC4WuZi9rhhDs5XKUKk52A=; b=Ct1w9gdvznGL0evGO+WfSgbHeNmxQZ5xBVUXTMMAbJ99/gLLtto6S+IU2a6QYal2KN mEA3j7PgKg++md5t9s+ocmLbI4AygONbEEJ0a447qJGJx/QmufA1tGzj76jeVO6ICobj vcok6tQHYogbBeX5whosQMsrfuX7YdbHhywNM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=DRH5Y/RahRQjrZlZd0c7fbC4WuZi9rhhDs5XKUKk52A=; b=kok1o0omdw015oyIbYvQUawBsWbxVc4CFGtLuj8JAoCJfQMBKtKkxBkPdy8QK89gX6 YsDwhkngs7ThJ+N/xqKUwCI1jvT+Kg54AAZbepv7EjfWHGW4KqKRlVCTFtuZZ4eEX557 nZ1kkXWo0DVqWdvUhkn9MOz/ciGko4lFByg3Ri1qe8GIV3Z5a9ssA2IRisolNw3t/Z4i BuqYkMIHLH4aYF7mbIfSsOT9bBsmHoGluRD2iiuLKzQ7rfAkPj668E41mtBH/bEhaKxk bozZjSS7hB+ar80XXsDYVt6AA/oibXR6siBeybbwSt1VfZDlCZZ/KwjAM1rK9u2591VA WgPQ== X-Gm-Message-State: AOAM532kROxZMG+EHWYeNFOq21BMUWpRyQ5c2aoHllnZtZZ7185NpBnA 7q/vNkYRXkMfICanwjxtGTAKa2GhN8BZM50yQoOBZw== X-Google-Smtp-Source: ABdhPJxn5IKUQSB7tiKup8PCXDUfWh7TSOzPp5tpmzA+PHw0o5VGs6nQ1jIvcGRTSL5dinYM0rr6SrqCmlA9Gr0p0Xc= X-Received: by 2002:a05:620a:109a:: with SMTP id g26mr11126057qkk.25.1627155727996; Sat, 24 Jul 2021 12:42:07 -0700 (PDT) MIME-Version: 1.0 References: <6F5C0B9D-C7EF-4DED-AAA5-241F55A916E6@planet.nl> In-Reply-To: <6F5C0B9D-C7EF-4DED-AAA5-241F55A916E6@planet.nl> From: Clem Cole Date: Sat, 24 Jul 2021 15:41:40 -0400 Message-ID: To: Paul Ruizendaal Content-Type: multipart/alternative; boundary="000000000000296d4005c7e3b718" Subject: Re: [TUHS] Who designed SysV IPC? X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000296d4005c7e3b718 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Yeah - they are different, but I'm pretty sure that Dale's work in CB UNIX came first. I know I saw the CB/UNIX code as hacks to PWB 1.0 I think (maybe 2.0) when I was still at CMU in 1978 (Phil Karn had it IIRC). I was under the impression that folks at Summit (e.g. UNIX Support Group) had the job of collecting different features that had been done and putting them into the AT&T 'Standard' for the operating companies. I agree it would be interesting to learn who did the work. But as I always understood it, Dale's team gave the CB/UNIX stuff to the USG folks who reimplemented it, I thought because USG was redoing the memory code and wanted something that would integrate better. I suspect it is also possible, Dale and his team redid it in the key of System V at some point and pushed it back. Clem =E1=90=A7 On Sat, Jul 24, 2021 at 2:38 PM Paul Ruizendaal via TUHS < tuhs@minnie.tuhs.org> wrote: > Currently reading through IPC in CB Unix 3.0, Vr1-vax and SVr1-pdp11. > > The IPC primitives in CB Unix (maus, event and msg) are quite different > from those in SVr1 (although maus survives in SVr1-pdp11). > > It made me wonder: is it still known who designed the IPC primitives for > SysV? > > > --000000000000296d4005c7e3b718 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Yeah - they are different, but I'm pretty sure that= Dale's work in CB UNIX came first.=C2=A0 =C2=A0I know I saw the CB/UNI= X code as hacks to=C2=A0PWB 1.0 I think (maybe 2.0) when I was still at CMU= in 1978 (Phil Karn had it IIRC).=C2=A0 =C2=A0I was under the impression th= at folks at Summit (e.g. UNIX Support Group) had the job of collecting diff= erent features that had been done and putting them into the AT&T 'S= tandard' for the operating companies.=C2=A0 I agree it would be interes= ting to learn who did the work.=C2=A0 But as I always understood it, Dale&#= 39;s team gave the=C2=A0CB/UNIX stuff to the USG folks who reimplemented it= , I thought because USG was redoing the memory code and wanted something th= at would integrate better.=C2=A0 =C2=A0I suspect it is also possible, Dale = and his team redid it in the key of System V at some point=C2=A0and pushed = it back.=C2=A0

Clem
3D""=E1=90=A7
On S= at, Jul 24, 2021 at 2:38 PM Paul Ruizendaal via TUHS <tuhs@minnie.tuhs.org> wrote:
Currently reading through IPC in = CB Unix 3.0, Vr1-vax and SVr1-pdp11.

The IPC primitives in CB Unix (maus, event and msg) are quite different fro= m those in SVr1 (although maus survives in SVr1-pdp11).

It made me wonder: is it still known who designed the IPC primitives for Sy= sV?


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