[jdk17u-dev] RFR: 8306929: Avoid CleanClassLoaderDataMetaspaces safepoints when previous versions are shared [v2]

[Aleksey Shipilev]

On Mon, 5 Aug 2024 10:17:37 GMT, Oli Gillespie <ogillespie at openjdk.org> wrote:

>> Hi all,
>> 
>> This pull request contains a backport of commit [408cec51](https://github.com/openjdk/jdk/commit/408cec516bb5fd82fb6dcddeee934ac0c5ecffaf) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
>> 
>> The commit being backported was authored by Stefan Johansson on 4 May 2023 and was reviewed by Coleen Phillimore and Serguei Spitsyn.
>> 
>> It's clean except for the surrounding context changing between NULL and nullptr which was trivial to resolve. It comes with its own test, but I also confirmed that it fixes the reproducer shared on the issue.
>> 
>> Thanks!
>
> Oli Gillespie has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Backport 29233e0a001adde71a3fa5d56292ccfba8409ea5

Marked as reviewed by shade (Reviewer).

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PR Review: https://git.openjdk.org/jdk17u-dev/pull/2776#pullrequestreview-2218615908