Auto merge of #115753 - tgross35:threadinfo-refactor, r=thomcc

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Refactor `thread_info` to remove the `RefCell`

`thread_info` currently uses `RefCell`-based initialization. Refactor this to use `OnceCell` instead which is more performant and better suits the needs of one-time initialization.

This is nobody's bottleneck but OnceCell checks are a single `cmp` vs. `RefCell<Option>` needing runtime logic

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bors 2023-09-20 09:55:53 +00:00

parent a00e3cb162 65c8336f6a

commit 4839d8977b

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