RFR: 8373366: HandshakeState should disallow suspend ops for disabler threads [v13]

[Serguei Spitsyn]

On Tue, 20 Jan 2026 20:54:46 GMT, Patricio Chilano Mateo <pchilanomate at openjdk.org> wrote:

>> Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8375362: deadlock with unmount of suspended virtual thread interrupting another virtual thread
>
> src/hotspot/share/runtime/javaThread.hpp line 737:
> 
>> 735: private:
>> 736:   bool _is_in_vthread_transition;                    // thread is in virtual thread mount state transition
>> 737:   bool _is_vthread_transition_disabler;              // thread currently disabled vthread transitions
> 
> Should we make this field `JVMTI` only?

Good suggestion, thanks! Fixed now.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28740#discussion_r2711008857