std: Fix perf of local allocations in newsched #8415
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Mostly optimizing TLS accesses to bring local heap allocation performance closer to that of oldsched. It's not completely at parity but removing the branches involved in supporting oldsched and optimizing pthread_get/setspecific to instead use our dedicated TCB slot will probably make up for it.
bors
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Mostly optimizing TLS accesses to bring local heap allocation performance closer to that of oldsched. It's not completely at parity but removing the branches involved in supporting oldsched and optimizing pthread_get/setspecific to instead use our dedicated TCB slot will probably make up for it.
flip1995
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Feb 24, 2022
Document `pub` requirement for `new_without_default` lint fixes rust-lang#8415 Also adds some UI tests that ensure that `pub` is required on both the struct _and_ the field. The only thing I'm not sure about is that the lint actually [checks](https://github.com/rust-lang/rust-clippy/blob/master/clippy_lints/src/new_without_default.rs#L102) if `new` is _reachable_, not _public_. To the best of my understanding, both the struct and the method need to be public for the method to be reachable for external crates (I certainly didn't manage to craft a counterexample). changelog: Document `pub` requirement for ``[`new_without_default`]`` lint.
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Mostly optimizing TLS accesses to bring local heap allocation performance
closer to that of oldsched. It's not completely at parity but removing the
branches involved in supporting oldsched and optimizing pthread_get/setspecific
to instead use our dedicated TCB slot will probably make up for it.