RFR: 8243146: Further cleanups after UseAdaptiveGCBoundary removal

[Stefan Johansson]

Hi Stefan,

On 2020-04-20 10:43, Stefan Karlsson wrote:
> Hi all,
> 
> Please review this patch to further cleanup after the 
> UseAdaptiveGCBoundary removal.
> 
> https://cr.openjdk.java.net/~stefank/8243146/webrev.01/
Looks good,
StefanJ
> https://bugs.openjdk.java.net/browse/JDK-8243146
> 
> Changes in the patch:
> - Remove AdjoiningGenerations and inline the contents into 
> ParallelScavengeHeap::initialize.
> - Remove AdjoiningVirtualSpaces.
> - Remove PSVirtualSpaceHighToLow
> - Update PS{Old,Young}Gen:
>   -- Move initialization to constructors, and made the functions private.
>   -- Remove unused functions
>   -- Change protected to private
>   -- Remove most virtual declarations
> - WB_PSVirtualSpaceAlignment - inlined the old value. There seems to be 
> some, arguably, odd usage of GenAlignment where SpaceAlignment seems 
> more appropriate. They both contain the same value, but it looks weird. 
> Maybe something to fix in a separate RFE.
> 
> Thanks,
> StefanK