RFR: 8304919: Implementation of Virtual Threads [v4]

[Alan Bateman]

On Wed, 29 Mar 2023 18:30:01 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> Alan Bateman has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix ThreadSleepEvent again
>
> test/hotspot/jtreg/serviceability/jvmti/thread/GetFrameCount/framecnt01/framecnt01.java line 82:
> 
>> 80: 
>> 81:         // this is too fragile, implementation can change at any time.
>> 82:         checkFrames(vThread1, false, 14);
> 
> Is this due to the `@hidden` being added to `Continuation.enter()` and `enter0()`? If so, since both methods are now hidden, why are there not 2 fewer frames? Was there also an additional frame added somewhere?

No, it's that a lambda expression is replaced in the implementation.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13203#discussion_r1152402303