RFR: 8364343: Virtual Thread transition management needs to be independent of JVM TI [v7]

[Coleen Phillimore]

On Tue, 25 Nov 2025 23:32:40 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Patricio Chilano Mateo has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   keep preexisting rebind order for mount
>
> src/hotspot/share/runtime/javaThread.cpp line 1152:
> 
>> 1150: bool JavaThread::is_in_VTMS_transition() const {
>> 1151:   return AtomicAccess::load(&_is_in_VTMS_transition);
>> 1152: }
> 
> Is the JavaThread version always the same as the java_lang_Thread::is_in_VTMS_transition(threadOop()) value?

Why is there the same flag with the same name in both the Java class and C++ JavaThread?  Might be an efficient cache, so something should say that (if true).

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PR Review Comment: https://git.openjdk.org/jdk/pull/28361#discussion_r2561962218