Withdrawn: 8309404: Parallel: Process class loader data graph in parallel in young gc

[duke]

On Sat, 3 Jun 2023 09:57:43 GMT, Guoxiong Li <gli at openjdk.org> wrote:

> Hi all,
> 
> This patch parallelizes the process of the class loader data graph in young gc.
> 
> The class `ClassLoaderData` has a field `_claim` to avoid applying oop closure more than once 
> and the method `ClassLoaderData::oops_do` can check if the CLD had been claimed.
> The parallel full gc has already used them in `MarkFromRootsTask::work` and `PSAdjustTask::work`.
> 
> But I don't have experience to test/verify the performance improvement of the GC.
> If this patch needs such test data before integrating, please guide and help me here.
> 
> Thanks for the review and guidance.
> 
> Best Regards,
> -- Guoxiong

This pull request has been closed without being integrated.

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PR: https://git.openjdk.org/jdk/pull/14297