Date: Tue, 05 Dec 2000 08:32:33 -0800 From: Cedric Berger <cedric@wireless-networks.com> To: Terry Lambert <tlambert@primenet.com> Cc: smp@FreeBSD.ORG Subject: Six-Lock? (was Re: Netgraph and SMP) Message-ID: <3A2D18A1.48C89595@wireless-networks.com> References: <200012050130.SAA16944@usr02.primenet.com>
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Ok, Thanks for the pointer. I guess I (and many people) use use the term reader/writer lock for exactly the "SIX-lock" mechanism you describes. In fact, I always thought that whether or not readers stop entering the lock when a writer request it is a matter of "lock policy". (You can even imagine any mixed policy where new readers are allowed to enter when a write is pending to improve throughoutput, but only for during a limited time to avoid writer starvation) Cedric Terry Lambert wrote: > > > How is this SIX-pack lock any different than a standard reader-writer lock? > > Actually, here is a tutorial from HP, with pictures: > > http://jazz.external.hp.com/training/sqltables/c5s17.html > > Terry Lambert > terry@lambert.org > --- > Any opinions in this posting are my own and not those of my present > or previous employers. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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