[PD-dev] lock-free fifo

[Tim Blechmann]

> It seems that the x86 CAS/CAS2 fragment are ok, but not the PPC CAS2
> code. http://www.go-ecs.com/ppc/ppctek1.htm#semsupp says that
> lwarx/stwcx  instruction can not be nested, because there is only one
> memory watcher  per cpu available.
> On the other hand, maybe there's a way to exploit that the memory 
> watching unit always looks at an entire cache line (64 bytes)?!
> I don't know.....
well, i had a bad feeling about the cas2 on ppcs ... still, i didn't
have the time to work with a mac ...
from what i read about the ppc architecture, there is no cas2 or dcas
available out of the box, so i'll have to have a look at the fifo
algorithm again... maybe i can somehow adapt it to get it working on
ppcs ...

i'll look into it again, when i have some more time ...

cheers ... tim

-- 
mailto:TimBlechmann at gmx.de    ICQ: 96771783
http://www.mokabar.tk

latest mp3:
http://mattin.org/mp3.html

After one look at this planet any visitor from outer space 
would say "I want to see the manager."
				      William S. Burroughs