rust/library/std/src/thread, branch perf-tmphttps://github.com/rust-lang/rust
http://git.dreamy.place/mirrors/rust/atom?h=perf-tmp2025-10-02T08:27:48+00:00Rollup merge of #146281 - Jules-Bertholet:static-align-thread-local, r=Mark-Simulacrum2025-10-02T08:27:48+00:00Matthias Krüger476013+matthiaskrgr@users.noreply.github.com2025-10-02T08:27:48+00:00urn:sha1:92aac1bdf61642cfc99498ca86e663cf53d2039e
Support `#[rustc_align_static]` inside `thread_local!`
Tracking issue: rust-lang/rust#146177
```rust
thread_local! {
#[rustc_align_static(64)]
static SO_ALIGNED: u64 = const { 0 };
}
```
This increases the amount of recursion the macro performs (once per attribute in addition to the previous once per item), making it easier to hit the recursion limit. I’ve added workarounds to limit the impact in the case of long doc comments, but this still needs a crater run just in case.
r? libs
``@rustbot`` label A-attributes A-macros A-thread-locals F-static_align T-libs
Add fast-path for accessing the current thread id2025-09-30T18:51:03+00:00Josh Simmonsjosh@nega.tv2025-06-26T19:31:05+00:00urn:sha1:cbaec31c10c5eff7342e5273360521911fbf7631
Accessing the thread id is often used in profiling and debugging, as
well as some approaches for sound single-threaded access to data.
Currently the only way to access the thread id is by first obtaining a
handle to the current thread. While this is not exactly slow, it does
require an atomic inc-ref and dec-ref operation, as well as the
injection of `Thread`'s drop code into the caller.
This publicly exposes the existing fast-path for accessing the current
thread id.
Hoist non-platform-specific code out of `thread_local_inner!`2025-09-27T21:05:39+00:00Jules Bertholetjulesbertholet@quoi.xyz2025-09-27T19:47:06+00:00urn:sha1:4d32b9a1783343d42a9864fe3d2115daa2cb425eSupport `#[rustc_align_static]` inside `thread_local!`2025-09-26T17:51:09+00:00Jules Bertholetjulesbertholet@quoi.xyz2025-09-10T21:11:47+00:00urn:sha1:a4e87e940620bc0e61caa7c42b1edc53c0aee7cbChange the cfg to a dash2025-09-21T17:12:20+00:00Ben Kimockkimockb@gmail.com2025-09-18T14:48:18+00:00urn:sha1:df58fd8cf7710f7516c541769a141f0235978dabAdd panic=immediate-abort2025-09-21T17:12:18+00:00Ben Kimockkimockb@gmail.com2025-09-07T16:31:35+00:00urn:sha1:888679013d1f424adef06267f3630069b4cabd40Rollup merge of #145895 - RalfJung:unpark, r=joboet2025-09-12T10:02:10+00:00Stuart CookZalathar@users.noreply.github.com2025-09-12T10:02:10+00:00urn:sha1:1037c082bc7d3ccd803b3eb0d48fc7fd81ddc733
thread parking: fix docs and examples
Fixes https://github.com/rust-lang/rust/issues/145816
r? ```@joboet```
Cc ```@m-ou-se``` ```@Amanieu```
std: move `thread` into `sys`2025-09-10T13:26:17+00:00joboetjonasboettiger@icloud.com2025-08-09T17:07:08+00:00urn:sha1:ad08577a503dfd03e308bd272e76d95e31c6d0efthread parking: fix docs and examples2025-09-03T07:14:25+00:00Ralf Jungpost@ralfj.de2025-08-26T16:12:36+00:00urn:sha1:39d51d04e706dee462ac4a17508ed87eb52e7715Tweak wording again2025-08-19T23:05:19+00:00Quinn Tuckerqxzcode@users.noreply.github.com2025-08-19T23:05:19+00:00urn:sha1:e84d29284c0f4d83e4033b39c6f21826d448373b