[concurrency-interest] DirectByteBuffers and reachabilityFence

Andrew Haley aph at redhat.com
Tue Dec 15 08:54:08 EST 2015


On 12/15/2015 12:37 PM, Vitaly Davidovich wrote:
> To be fair, no empirical evidence has been presented; there is speculation
> of scenarios it may hurt but nothing concrete.

Exactly.  That was the answer!

> I also think the bigger obstacle to changing this behavior is getting all
> the different JVM implementations modified and not really the performance
> impact.

Yes, it's political as well.  reachabilityFence() is a great start.

Andrew.




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