RFR: 8306467: Fix nsk/jdb/kill/kill001 to work with new JVMTI StopThread support for virtual threads. [v5]

[Alex Menkov]

On Mon, 15 May 2023 22:18:32 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> Looks good to me.
>> Please update "@summary" statement about "notKilled" (now "killed") field
>
> I went to edit the PR description, but found it is not actually incorrect. It says "kill001 suspends all threads at a breakpoint". That is actually true. Although it is the main thread that hits the breakpoint, all threads are suspended. Since the additional threads are suspended and mounted, the TR.stop() can be done on them. If they are blocked (as they are) but not suspended, the TR.stop() would fail (for virtual threads). I'll try to clean it up a bit though. The description could be clearer.

Yes, I realized this too. By default breakpoints have SUSPEND_ALL policy.

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PR Review Comment: https://git.openjdk.org/jdk/pull/13967#discussion_r1194440468