JEP 171: Fence Intrinsics

Aleksey Shipilev aleksey.shipilev at oracle.com
Mon Dec 17 01:57:21 PST 2012


On 12/14/2012 11:17 AM, Kirk Pepperdine wrote:
> The source of my objects to these methods is that they can currently 
> only be applied speculatively.

It sounds as if we don't have the native tools that can map the CPU
events back to Java code? Oracle Solaris Studio Performance Analyzer
folks will disagree with you.

> That said, if the decision has been made to open up access to fencing
> and padding and other CPU tricks, I'd argue that we need to consider
> opening up a way to measure the effects.

Sure, please open up a JEP and discuss the ramifications of this work there.

-Aleksey.


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