RFR: 8351927: Change VirtualThread implementation to use use FJP delayed task handling

[Viktor Klang]

On Wed, 9 Apr 2025 05:56:28 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> src/java.base/share/classes/java/lang/VirtualThread.java line 889:
>> 
>>> 887:     private void parkTimeoutExpired() {
>>> 888:         assert !VirtualThread.currentThread().isVirtual();
>>> 889:         if (!getAndSetParkPermit(true)
>> 
>> @AlanBateman Would it make sense to test whether the park-permit is false before the LOCK XCHG?
>
> It already does, no CAS if the current value is the new value.

I meant the park permit. :)

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PR Review Comment: https://git.openjdk.org/jdk/pull/24030#discussion_r2034736102