RFR: 8247524: Remove unnecessary volatile qualifiers from member functions

[Stefan Karlsson]

Looks good.

StefanK

On 2020-06-15 01:15, Kim Barrett wrote:
> Please review this change to oopDesc and Metadata classes, removing
> unnecessary volatile qualifiers from some member functions.
>
> This change also makes virtual overrides of the relevant functions
> explicitly virtual.
>
> While there, removed unnecessary workaround in oopDesc::klass_or_null_acquire.
>
> After this change,
>    egrep -r -H --exclude-dir=.hg "\)\s*(const |)\s*volatile" src/hotspot
> finds nothing; there seem to be no remaining volatile qualified methods.
>
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8247524
>
> Webrev:
> https://cr.openjdk.java.net/~kbarrett/8247524/open.00/
>
> Testing:
> mach5 tier1-3
>