RFR: 8306647: Implementation of Structured Concurrency (Preview) [v2]

[Alan Bateman]

On Tue, 30 May 2023 17:31:54 GMT, Rémi Forax <forax at openjdk.org> wrote:

> One surprising thing is that Subtask.get() give less leeway to the owner thread than to the other virtual threads so in onComplete() storing a Subtask to use it later by the owner thread does not work well if join() is not called yet. This is perhaps a bit too much.

Maybe but it would be a bug if the owner were to call Subtask::get before joining. This is easy to detect for subtasks that are forked by the owner. Time will tell how common it will be for subtasks to fork additional subtasks.

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PR Comment: https://git.openjdk.org/jdk/pull/13932#issuecomment-1570217584