Withdrawn: 8343658: Parallel: Implement block_start for Young generation

[duke]

On Wed, 6 Nov 2024 08:04:17 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple block_start implementation for Parallel young-gen. Related to https://github.com/openjdk/jdk/pull/21870
> 
> Test: tier1-3

This pull request has been closed without being integrated.

-------------

PR: https://git.openjdk.org/jdk/pull/21919