RFR: 8306028: separate ThreadStart/ThreadEnd events posting code in JVMTI VTMS transitions [v6]

[Serguei Spitsyn]

On Mon, 1 May 2023 23:42:28 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>> This refactoring to separate ThreadStart/ThreadEnd events posting code in the JVMTI VTMS transitions is needed for future work on JVMTI scalability and performance improvements. It is to easier put this code on slow path.
>> 
>> Testing: mach5 tiers 1-6 were successful.
>
> Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision:
> 
>   addressed review comment: add a couple of asserts

Leonid, thank you a lot for review!

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PR Comment: https://git.openjdk.org/jdk/pull/13484#issuecomment-1530734063