RFR: 8219613: Use NonJavaThread PtrQueues

[Kim Barrett]

> On Mar 5, 2019, at 5:16 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> Hi,
> 
> On Mon, 2019-02-25 at 22:27 -0500, Kim Barrett wrote:
>> Please review this change to G1 and Shenandoah to use the already
>> extent thread-local PtrQueues in NonJavaThreads, rather than using
>> shared queues that require locking.
>> 
>> 
> [...]
>> https://bugs.openjdk.java.net/browse/JDK-8219613
>> 
>> Webrev:
>> http://cr.openjdk.java.net/~kbarrett/8219613/open.01/
>> 
>> gc/shared/barrierSet.cpp is in the webrev, but ended up not being
>> changed.
> 
> looks good.
> 
> Thomas

Thanks!