Integrated: 8298853: JvmtiVTMSTransitionDisabler should support disabling one virtual thread transitions

[Serguei Spitsyn]

On Thu, 15 Dec 2022 11:51:10 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

> Now the `JvmtiVTMSTransitionDisabler` mechanism supports disabling VTMS transitions for all virtual threads only. It should also support disabling transitions for any specific virtual thread as well. This will improve scalability of the JVMTI functions operating on target virtual threads as the functions can be executed concurrently without blocking each other execution when target virtual threads are different.
> New constructor `JvmtiVTMSTransitionDisabler(jthread vthread)` is added which has jthread parameter of the target virtual thread.
> 
> Testing:
>   mach5 jobs are TBD (preliminary testing was completed):
>    - all JVMTI, JDWP, JDI and JDB tests have to be run
>    - Kitchensink
>    - tier5

This pull request has now been integrated.

Changeset: 13b1ebba
Author:    Serguei Spitsyn <sspitsyn at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/13b1ebba276940ff83e53b8ec3659280b3574204
Stats:     198 lines in 8 files changed: 129 ins; 16 del; 53 mod

8298853: JvmtiVTMSTransitionDisabler should support disabling one virtual thread transitions

Reviewed-by: pchilanomate, lmesnik

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PR: https://git.openjdk.org/jdk/pull/11690