RFR: 8169423: Infinite loop in G1's ConcurrentMarkThread

[Thomas Schatzl]

Hi,

On Fri, 2016-11-11 at 15:38 -0500, Kim Barrett wrote:
> Please review this fix of a potential (though quite rare) infinite
> loop in G1's concurrent mark thread's service routine.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8169423
> 
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/8169423/webrev.00/
> 
> Testing:
> JPRT

  looks good.

It would be nice to have some information about during which phase the
concurrent mark stack overflowed. This seems out of scope though, I
created JDK-8169706.

Thomas