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Re: objective-c: how slow ?


From: Helge Hess
Subject: Re: objective-c: how slow ?
Date: Sat, 01 Sep 2001 23:05:54 +0200

"Erik M. Buck" wrote:
> NeXT used Objective-C for writing kernel level drivers.  There is no real
> problem using Objective-C in a performance sensitive embedded system.
> However, it would be very difficult if not impossible to prove the
> determinism of the Objective-C message dispatch (since it uses hash tables),
> so if you need determinism (i.e guaranteed execution time measured in CPU
> clock ticks) then you don't want Objective-C.

Small side note: GNU ObjC does not use a hash table for message dispatch
but a sparse array. If I'm not mistaken the implementation is
deterministic.

Greetings
  Helge
-- 
SKYRIX Software AG - http://www.skyrix.com
Web Application Technology for Enterprises



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