RFR (S): 8233998: New young regions registered too early in collection set

[Stefan Johansson]

Hi Thomas,

On 2019-11-12 16:24, Thomas Schatzl wrote:
> Hi,
> 
>    can I have reviews for this change that changes the place in which 
> new mutator regions are published in the collection set list?
> 
> Previously a new eden region has been published before some data that 
> would be read by the young gen sampling thread could be visible.
> 
> This change simply does the member updates before adding the regions to 
> the collection set.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8233998
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8233998/webrev/
Looks good,
StefanJ

> Testing:
> hs-tier1-5 with other similar patches, specjvm2008 specjvm.validation 
> with -XX:G1ConcRefinementServiceIntervalMillis=1 (that one causes issues 
> quickly if you assert that the remembered sets for regions only grows)
> 
> Thanks,
>    Thomas