8204163: Also detect concurrent GCs in MetaspaceBaseGC.java

[Per Liden]

Looks good to me.

/Per

On 05/31/2018 01:52 PM, Stefan Karlsson wrote:
> Hi all,
> 
> Please review this patch to allow MetaspaceBaseGC.java to detect 
> concurrent GC cycles that are started because of Metaspace allocations.
> 
> http://cr.openjdk.java.net/~stefank/8204163/webrev.01/
> https://bugs.openjdk.java.net/browse/JDK-8204163
> 
> The old code only checked for Full GCs, and now we also match concurrent 
> cycles.
> 
> This has been tested with the vmTestbase/metaspace/gc tests with G1, 
> CMS, and Z.
> 
> Thanks,
> StefanK