Subj : sync vs. eieio on powerpc
To   : comp.programming.threads
From : Joe Seigh
Date : Mon Feb 28 2005 03:57 pm

Got a mac I'm playing around with now.  Mostly inline assembler.
eieio seems to order the memory accesses whereas sync actually
waits for accesses to complete to storage before permitting
subsequent accesses.  So eieio seems adequate for most stuff but
all the examples use sync for release semantics.  I'm not sure
why since eieio will work also.

And I have no clue why the examples use isync for acquire semantics.
It will work but so will eieio.

Timings on a 1.2 ghz G4 show... well now it shows isync as quicker
than eieio.  Have to work on that timing program.  I'm getting
weird timings on some things.

-- 
Joe Seigh

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