[jdk17u-dev] RFR: 8256811: Delayed/missed jdwp class unloading events [v4]

[Andrew Dinn]

On Wed, 7 Sep 2022 09:54:02 GMT, Andrew Dinn <adinn at openjdk.org> wrote:

>> Backport of patch to fix class unloading event notification.
>> 
>> This backport was originally developed by @zhengyu123 and involved some minor changes to the original patch.
>> 
>> n.b. the original patch required a follow up fix (cf JDK-8290908) which also needs backporting after this has been included.
>
> Andrew Dinn has updated the pull request incrementally with one additional commit since the last revision:
> 
>   correct type

Aargh! It seems JDK-8291456 was applied last after the other 3 commits. So, the required order is:

 - _JDK-8256811_ : Zhengyu's original fix
 - _JDK-8290908_ : Correct TCK failure from last patch
 - _JDK-8291650_ : Add delay to ClassUnloadEventTest to allow ObjectFree events to propagate
 - _JDK-8292880_ : Enable debuggee logging in ClassUnloadEventTest
 - _JDK-8292879_ : Add delay to skew race between ClassPrepare event propagation and GC request initiation in debuggee
 - _JDK-8291456_ : Flush pending ObjectFree events at VM shutdown

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PR: https://git.openjdk.org/jdk17u-dev/pull/635