RFR: 8289607: Change hotspot/jtreg tests to not use Thread.suspend/resume [v2]

[Leonid Mesnik]

On Tue, 20 Sep 2022 21:41:31 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> > Testcase from test test/hotspot/jtreg/vmTestbase/nsk/jdi/ThreadReference/interrupt/interrupt001.java was removed because only one environment can suspend threads so debugger is not compatible with JVM TI agent suspending test.
> 
> As far as I know, this is the only test we have for ThreadReference.interrupt(). Also see [JDK-8282384](https://bugs.openjdk.org/browse/JDK-8282384), which points out that we have no test for ThreadReference.interrupt() of a virtual thread, and suggests modifying this test to support virtual threads. I actually attempted to do this, but ran into an issue because Thread.resume() is not supported for virtual threads, but seems your changes get rid of resume() so it shouldn't be an issue anymore.
> 
> I think losing this test case means we no longer test interrupt when suspended. Maybe we need to have the debugger side initiate the suspending.

Let me file another bug for this. Just don't block Alan's fix https://github.com/openjdk/jdk/pull/10324

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PR: https://git.openjdk.org/jdk/pull/10351