Date: Sun, 26 Mar 2000 17:12:47 +0200 (CEST) From: Andrzej Bialecki <abial@webgiro.com> To: Doug Rabson <dfr@nlsystems.com> Cc: freebsd-current@freebsd.org Subject: Re: Dynamic sysctls - patches for review Message-ID: <Pine.BSF.4.20.0003261710550.42603-100000@mx.webgiro.com> In-Reply-To: <Pine.BSF.4.21.0003261437300.89245-100000@salmon.nlsystems.com>
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On Sun, 26 Mar 2000, Doug Rabson wrote: > On Sun, 26 Mar 2000, Andrzej Bialecki wrote: > > Well, somehow the idea of overlapping subtrees sounds nice and useful > > IMHO. Any suggestions how to solve these issues? > > > > One possible way to do it would be to keep some ID of the oid's > > creator. Then, for nodes they would be deleted when the refcnt goes to 0 > > (no matter who created them), but for terminals the deletion would succeed > > only for the owners. Also, if you create a subtree not from the root of > > dynamic tree, the refcnt++ would propagate up the tree as well, and > > similarly refcnt-- would propagate on deletion. > > This is a reasonable solution. Another would be for dynamic sysctl users > to use a 'context' object to record all their edits to the tree which > would allow the edits to be backed out without relying on a tree-delete > operation. Could you explain it further? Do you mean something like a transaction log? But this wouldn't work - the operations on the tree can be interdependent between users. Andrzej Bialecki // <abial@webgiro.com> WebGiro AB, Sweden (http://www.webgiro.com) // ------------------------------------------------------------------- // ------ FreeBSD: The Power to Serve. http://www.freebsd.org -------- // --- Small & Embedded FreeBSD: http://www.freebsd.org/~picobsd/ ---- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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