RFR: 8338383: Implement JEP 491: Synchronize Virtual Threads without Pinning [v30]

[Patricio Chilano Mateo]

On Tue, 5 Nov 2024 07:51:05 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

>> Patricio Chilano Mateo has updated the pull request incrementally with five additional commits since the last revision:
>> 
>>  - Add oopDesc::has_klass_gap() check
>>  - Rename waitTimeout/set_waitTimeout accessors
>>  - Revert suggestion to ThawBase::new_stack_frame
>>  - Improve JFR pinned reason in event
>>  - Use freeze_result consistently
>
> src/hotspot/share/jfr/metadata/metadata.xml line 160:
> 
>> 158: 
>> 159:   <Event name="VirtualThreadPinned" category="Java Virtual Machine, Runtime" label="Virtual Thread Pinned" thread="true" stackTrace="true">
>> 160:     <Field type="string" name="blockingOperation" label="Blocking operation" />
> 
> The label should be "Blocking Operation" with a capital "O".
> 
> Labels use headline-style capitalization. See here for more information: https://docs.oracle.com/en/java/javase/21/docs/api/jdk.jfr/jdk/jfr/Label.html

Fixed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21565#discussion_r1829463128