RFR: 8343658: Parallel: Implement block_start for Young generation

Thu Jan 9 14:04:42 UTC 2025

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

It's hard to create a reproducible test case for a crash in print location because it requires you to load a specific bogus value (which points into the unallocted part of the heap) into a register just before the crash. It's easy though to trigger it manually in the debugger as described in https://github.com/openjdk/jdk/pull/21919#issuecomment-2577275582.

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PR Comment: https://git.openjdk.org/jdk/pull/21919#issuecomment-2580274187