RFR: 8335480: Only deoptimize threads if needed when closing shared arena [v2]

[Uwe Schindler]

On Mon, 15 Jul 2024 08:57:08 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   track has_scoped_access for compiled methods
>
> test/micro/org/openjdk/bench/java/lang/foreign/ConcurrentClose.java line 34:
> 
>> 32: import static java.lang.foreign.ValueLayout.*;
>> 33: 
>> 34: @BenchmarkMode(Mode.AverageTime)
> 
> Doesn't the existing bench `MemorySessionClose` already covers this? That benchmark has three stress modes, and one of them spawns many unrelated threads (but there is only one thread doing a close).

It should also run threads not doing any scoped accesses to verify that other threads are not affected.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20158#discussion_r1677509975