RFR: 8323659: LinkedTransferQueue add and put methods call overridable offer

[Chris Hegarty]

On Fri, 12 Jan 2024 10:38:40 GMT, Chris Hegarty <chegar at openjdk.org> wrote:

> Update LinkedTransferQueue add and put methods to not call overridable.

FTR - I agree that it's kinda annoying to be proposing this change and it is true that the consuming user code is making an assumption, but the impact of this is significant - leads to apparently vanishing tasks when Elasticsearch runs on JDK 22 EA. The proposed changes are extremely minimal. 

If @DougLea agrees, then I'll add a minimal test case and get the PR into a clean state.

Additionally, we absolutely need to fix this in JDK 21.0.2 - since a patch release should not change behaviour (from 21.0.1), in this way.

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PR Comment: https://git.openjdk.org/jdk/pull/17393#issuecomment-1889097252
PR Comment: https://git.openjdk.org/jdk/pull/17393#issuecomment-1889103827