RFR: 8296324: JVMTI GetStackTrace truncates vthread stack trace for agents loaded into running VM [v3]

[Leonid Mesnik]

On Fri, 18 Nov 2022 07:23:20 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>> The `VirtualThread` static field `notifyJvmtiEvents` is not set correctly in cases JVMTI agents are loaded into running VM. It is because an extra call to java_lang_VirtualThread::init_static_notify_jvmti_events() is needed.
>> This function is called once at the VM initialization, so this extra call is not necessary for agent loaded at startup.
>> 
>> Testing:
>> New test is added: `test/hotspot/jtreg/serviceability/jvmti/vthread/VirtualStackTraceTest`
>> This test is failed without fix and passed with it.
>> TBD: run all JVMTI and JDI test in mach5.
>
> Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision:
> 
>   ajust condition when init_static_notify_jvmti_events() is called

Marked as reviewed by lmesnik (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11204