Move rayon-core to rustc_thread_pool files as is

This commit literally copied the directory rayon-core from
revision `5fadf44`. Link:
https://github.com/rust-lang/rustc-rayon/tree/5fadf44/rayon-core
This commit is contained in:
Celina G. Val
2025-06-11 10:43:59 -07:00
parent bdb04d6c4f
commit 35c5144394
39 changed files with 8225 additions and 0 deletions

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Note: This is an unstable fork made for use in rustc
Rayon-core represents the "core, stable" APIs of Rayon: join, scope, and so forth, as well as the ability to create custom thread-pools with ThreadPool.
Maybe worth mentioning: users are not necessarily intended to directly access rayon-core; all its APIs are mirrored in the rayon crate. To that end, the examples in the docs use rayon::join and so forth rather than rayon_core::join.
rayon-core aims to never, or almost never, have a breaking change to its API, because each revision of rayon-core also houses the global thread-pool (and hence if you have two simultaneous versions of rayon-core, you have two thread-pools).
Please see [Rayon Docs] for details about using Rayon.
[Rayon Docs]: https://docs.rs/rayon/
Rayon-core currently requires `rustc 1.63.0` or greater.