RFR: 8307153: JVMTI GetThreadState on carrier should return STATE_WAITING [v4]

[Alex Menkov]

On Tue, 6 Jun 2023 22:06:14 GMT, Serguei Spitsyn <sspitsyn at openjdk.org> wrote:

>>> Okay, I see you point. Unfortunately, I've always referred the platform thread with an executed FJP schedular as a carrier thread. The term 'carrier' with this meaning is everywhere in the JVMTI code. It looks very confusing to call a thread to be a carrier thread only during some phases of its execution.
>> 
>> Okay, I'm just pointing out that is_passive_carrier_thread looks a bit strange here as it is testing if a JavaThread is carrying a virtual thread oop -  it's not testing if the thread is owned by the virtual thread scheduler.
>
> I'm still thinking what identifier to use instead of `is_passive_carrier_thread`.
> Just `is_carrier_thread` is going to be confusing as well.
> What about `is_carrier_thread_waiting_for_virtual` or `is_carrier_thread_waiting_for_virtual_to_unmount`?

`is_carrying_carrier_thread`? a bit artificial, but it's a carrier thread and it's carrying a virtual thread

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PR Review Comment: https://git.openjdk.org/jdk/pull/14298#discussion_r1220541192