RFR: 8249627: Degrade Thread.suspend and Thread.resume [v2]

[Serguei Spitsyn]

On Fri, 23 Sep 2022 13:57:56 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Degrade Thread.suspend/resume to throw UOE unconditionally.
>> 
>> Another step in the removal of this deadlock prone mis-feature from the user-facing API. Thread.suspend/resume have been deprecated since JDK 1.2 (1998) and terminally deprecated since Java 14. ThreadGroup.suspend/resume were degraded to throw UOE in Java 19. As of Java 19, Thread.suspend/resume continues to work for platform threads but throws UOE for virtual threads. The next step is to degrade both methods to throw UOE for all threads. A corpus search of 19M classes in 113k JAR files found only 22 classes using these methods so this change is unlikely to be disruptive.
>> 
>> The change requires some minor adjustments to the JVM TI and JDWP specifications, and a minor update to the JDI docs.
>> 
>> Leonid Mesnik is working on [PR10351](https://github.com/openjdk/jdk/pull/10351) to remove/replace the last few usages of Thread.suspend/resume from the hotspot tests (most of these can use JVMTI SuspendThread/ResumeThread).
>
> Alan Bateman has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains ten commits:
> 
>  - Update DegradedMethodsThrowUOE to test Thread.stop
>  - Merge
>  - Update modifyThread and modifyThreadGroup targets
>  - Merge
>  - Fix typo in test comment
>  - Keep link to threadPrimitiveDeprecation.html
>  - Merge
>  - Tests
>  - Initial commit

Marked as reviewed by sspitsyn (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/10324