In
<985915eee6984740ae93f8495c624c6c232c1e0...@jscpcwexmaa1.bsg.ad.adp.com>,
on 04/25/2014
   at 10:59 AM, "Farley, Peter x23353" <peter.far...@broadridge.com>
said:

>Seems wasteful of CPU cycles to me,

How often do you expect to hit the guard page? An explicit test for
stack overflow costs you at every call, and that can add up to more
overhead than an infrequent program exception. I would hope that IBM
did some measurements bfore deciding on the guard-page strategy.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Reply via email to