rust/library/std/src/sys/thread_local/guard/solid.rs, branch 1.85.0https://github.com/rust-lang/rust
http://git.dreamy.place/mirrors/rust/atom?h=1.85.02024-10-02T16:04:21+00:00std: make `thread::current` available in all `thread_local!` destructors2024-10-02T16:04:21+00:00joboetjonasboettiger@icloud.com2024-07-18T11:59:48+00:00urn:sha1:d868fdce6b9ddef6abcc8de86b3ba8459def36a2Reformat `use` declarations.2024-07-28T22:26:52+00:00Nicholas Nethercoten.nethercote@gmail.com2024-07-28T22:13:50+00:00urn:sha1:84ac80f1921afc243d71fd0caaa4f2838c294102
The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
std: refactor the TLS implementation2024-06-15T15:47:35+00:00joboetjonasboettiger@icloud.com2024-06-15T15:47:35+00:00urn:sha1:f3facf11758af878bcfaf47fc773962dbb565024
As discovered by Mara in #110897, our TLS implementation is a total mess. In the past months, I have simplified the actual macros and their expansions, but the majority of the complexity comes from the platform-specific support code needed to create keys and register destructors. In keeping with #117276, I have therefore moved all of the `thread_local_key`/`thread_local_dtor` modules to the `thread_local` module in `sys` and merged them into a new structure, so that future porters of `std` can simply mix-and-match the existing code instead of having to copy the same (bad) implementation everywhere. The new structure should become obvious when looking at `sys/thread_local/mod.rs`.
Unfortunately, the documentation changes associated with the refactoring have made this PR rather large. That said, this contains no functional changes except for two small ones:
* the key-based destructor fallback now, by virtue of sharing the implementation used by macOS and others, stores its list in a `#[thread_local]` static instead of in the key, eliminating one indirection layer and drastically simplifying its code.
* I've switched over ZKVM (tier 3) to use the same implementation as WebAssembly, as the implementation was just a way worse version of that
Please let me know if I can make this easier to review! I know these large PRs aren't optimal, but I couldn't think of any good intermediate steps.
@rustbot label +A-thread-locals