RFR: 8345423: Shenandoah: Parallelize concurrent cleanup

[Y. Srinivas Ramakrishna]

On Thu, 10 Apr 2025 22:05:06 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

>> Not clean
>
> src/hotspot/share/gc/shenandoah/shenandoahFreeSet.cpp line 1273:
> 
>> 1271: 
>> 1272: void ShenandoahFreeSet::recycle_trash() {
>> 1273:   // lock is not non-reentrant, check we don't have it
> 
> Double negative.

I am guessing you wanted "not reentrant".

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PR Review Comment: https://git.openjdk.org/shenandoah-jdk21u/pull/172#discussion_r2038409020