RFR: 8318706: Implementation of JDK-8276094: JEP 423: Region Pinning for G1 [v4]

Thu Nov 2 11:46:02 UTC 2023

On Tue, 31 Oct 2023 18:54:26 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Had a discussion with @albertnetymk and we came to the following agreement about naming:
>
>"allocation failure" - allocation failed in the to-space due to memory exhaustion
>"pinned" - the region/object has been pinned
>"evacuation failure" - either pinned or allocation failure
>
>I will apply this new naming asap.

Done. I left out the `G1EvacFailureInjector` (it only injects allocation failures, not evacuation failures) related renamings as this adds lots of noise (including the debug options). I'll file a follow-up and assign it to me.

Tier1 seems to pass, will redo upper tiers again.

The only noteworthy externally visible change is that the `(Evacuation Failure)` tag in log messages is now `(Allocation Failure)`. I did not want combinations of `(Evacuation Failure)` and additionally `(Pinned) (Allocation Failure)`, but maybe it is fine, or just fine to keep only `(Evacuation Failure)` as before and assume that users enable higher level logging to find out details.

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PR Comment: https://git.openjdk.org/jdk/pull/16342#issuecomment-1790570048