I have often thought about that but I don't quite understand why it is needed.  
Would you give an example of a problem that is fixed by this method?

Thanks!
Lindy
________________________________________
From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of 
Anne & Lynn Wheeler [l...@garlic.com]
Sent: 19 November 2013 16:49
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Serialization without Enque

charlie had invented compare-and-swap while doing fine grain
multiprocessing locking for cp67 at the cambridge science center.
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