RFR: 8277848 Binding and Unbinding to List leads to memory leak [v7]

[Florian Kirmaier]

On Fri, 19 Aug 2022 10:40:01 GMT, Florian Kirmaier <fkirmaier at openjdk.org> wrote:

>> Making the initial listener of the ListProperty weak fixes the problem.
>> The same is fixed for Set and Map.
>> Due to a smart implementation, this is done without any performance drawback.
>> (The trick is to have an object, which is both the WeakReference and the Changelistener)
>> By implying the same trick to the InvalidationListener, this should even improve the performance of the collection properties.
>
> Florian Kirmaier has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:
> 
>  - Merge remote-tracking branch 'origjfx/master' into JDK-8277848-list-binding-leak
>  - JDK-8277848
>    Added tests to ensure no premature garbage collection is happening.
>  - JDK-8277848
>    Added 3 more tests to verify that a bug discussed in the PR does not appear.
>  - JDK-8277848
>    Added the 3 requests whitespaces
>  - JDK-8277848
>    Further optimization based code review.
>    This Bugfix should now event improve the performance
>  - JDK-8277848
>    Added missing change
>  - JDK-8277848
>    Fixed memoryleak, when binding and unbinding a ListProperty. The same was fixed for SetProperty and MapProperty.

I've just merged it with master for easier codereview.

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PR: https://git.openjdk.org/jfx/pull/689