On Sat, 3 Jun 2023 21:34:16 GMT, Chris Plummer <cjplum...@openjdk.org> wrote:

>> Normally when a virtual thread wrapper is used to run a test, the main 
>> thread is renamed to "old-m-a-i-n" and the new virtual thread that will act 
>> as the main thread is named "main". Neither is being done by 
>> `ProcessTools.main()`. This can cause problems for tests that expect the 
>> main thread that the test is running in to be called "main". It is instead 
>> left unnamed. This is causing the following 4 tests to fail:
>> 
>> com/sun/jdi/JdbMethodExitTest.java
>> com/sun/jdi/JdbStepTest.java
>> com/sun/jdi/JdbStopThreadTest.java
>> com/sun/jdi/JdbStopThreadidTest.java
>> 
>> These tests also fail due to 
>> [JDK-8309397](https://bugs.openjdk.org/browse/JDK-8309397), which will be 
>> fixed after this CR, and also com/sun/jdi/JdbMethodExitTest.java fails due 
>> to [JDK-8309396](https://bugs.openjdk.org/browse/JDK-8309396), which will 
>> also subsequently be fixed.
>> 
>> Note this fix messed up one runtime test. It was expecting an exception 
>> message to mention the "main" thread rather than "old-m-a-i-n". Loosening 
>> the exception message matching pattern a bit solved the problem.
>> 
>> Testing was done by running all of tier1 and tier5.
>
> Chris Plummer has updated the pull request incrementally with two additional 
> commits since the last revision:
> 
>  - No longer need reflection to call Thread.ofVirtual().unstarted()
>  - Remove from problem list tests that are fixed by this PR.

Looks good.
Thanks,
Serguei

-------------

Marked as reviewed by sspitsyn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14292#pullrequestreview-1460389726

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