Subj : Re: A question about atomic_ptr
To   : comp.programming.threads
From : Chris Thomasson
Date : Fri Apr 15 2005 10:22 pm

> Well, we take what we can get.  When you get lemons, you make lemonade.
> When you get hardware, you make software.

LOL!

<hardware rant>
Isn't assembly language great! Its basically created by experienced hard 
working hardware folk who "seem" to think an efficient implementation of TAS 
should be "enough" for all types of threaded programming. I could picture a 
hardware guy thinking that DWCAS is basically only useful for 32-bit 
programs that want to have 64-bit atomic ops, to be 64-bit ready so to 
speak...

They give the ability for advanced lock-free algorithms on 32-bit and did 
not event seem to realize it. That can "possibly" be a real reason that 
would account for the fact that DWCAS is *not "reliably" ported to 64-bit 
systems.
</hardware rant>




* It is on Intel extensions, and "some" AMD's; Per-cpu "features", damn...

;)




<rant2>
What the heck was that cmp8xchg16 thing all about!
</rant2>

.