Article View: net.database
Article #148Re: locks
From: Jerry Lieberthal
Date: Tue, 10 Sep 1985 02:54
Date: Tue, 10 Sep 1985 02:54
31 lines
1877 bytes
1877 bytes
> This got beaten to death a while ago in net.arch, but let me add my > two cents. I believe that the issue of database locking is too > complicated to be done in the operating system. The best thing to do > would be to provide a simple, easy to use, efficient, lock mechanism > VMS (no flames please) has such a lock manager. The idea is that locks > are named when they are created. There are primities to lock, unlock, > and wait on locks. All that is required is that users agree on a > One Oxford Street > Cambridge, MA 02138 This is also true of the Sperry implementation (DMS 1100) which is a network arch. database with locks around the world (maybe that's why users spend so much of their time locking/unlocking that the update never gets done :-)). The locks are implemented in the equivalent of a daemon and not really in the OS (although Sperry has hooks there too if you want to use them). -- ------------------------------------------------ - jerry University of Wisconsin-Milwaukee Computing Services Division ihnp4!uwmcsd1!jerry uwmcsd1!jerry@wisc-rsch.ARPA "HALT, or you will exterminateeedddd......" <sounds of meltdown follow> | | |-------> sound of generic DALEK fadeout ...
Technical Details
Message-ID:
<410@uwmcsd1.UUCP>Path:
arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!uwmcsd1!jerryReferences:
<10185@ucbvax.ARPA> <5909@utzoo.UUCP> <10233@ucbvax.ARPA> <341@harvard.ARPA>Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site uwmcsd1.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!uwmcsd1!jerry From: jerry@uwmcsd1.UUCP (Jerry Lieberthal) Newsgroups: net.database Subject: Re: locks Message-ID: <410@uwmcsd1.UUCP> Date: Mon, 9-Sep-85 22:54:06 EDT Article-I.D.: uwmcsd1.410 Posted: Mon Sep 9 22:54:06 1985 Date-Received: Wed, 11-Sep-85 05:35:57 EDT References: <10185@ucbvax.ARPA> <5909@utzoo.UUCP> <10233@ucbvax.ARPA> <341@harvard.ARPA> Organization: U of Wi-Milwaukee, Computing Services Div Lines: 31