[jmm-dev] weakCompareAndSet memory semantics

David Holmes david.holmes at oracle.com
Wed Apr 20 23:10:05 UTC 2016

On 21/04/2016 8:59 AM, Justin Sampson wrote:
> David Holmes wrote:
>> Side question: why would you replace compareAndSet with
>> weakCompareAndSet when that would expose those ll/sc spurious
>> failures?
> The spurious failures are irrelevant because the whole thing is
> wrapped in a retry loop anyway.

And in the compareAndSet the spurious failures never escape because it 
also has a retry loop. So my question stands: why would you switch to 
weakCompareAndSet in "busy loops" and how would this be a benefit?


> Cheers,
> Justin

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