RFR: 8258431: Provide a JFR event with live set size estimate [v2]

Mon Mar 1 15:27:26 UTC 2021

On Thu, 18 Feb 2021 10:27:21 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp line 627:
>> 
>>> 625: 
>>> 626: size_t ShenandoahHeap::live() const {
>>> 627:   size_t live = Atomic::load_acquire(&_live);
>> 
>> I understand you copy-pasted from the same file. We have removed `_acquire` with #2504. Do `Atomic::load` here.
>
> ...which also means you want to merge from master to get recent changes?

Yep. Done.

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PR: https://git.openjdk.java.net/jdk/pull/2579