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Avoid tls access while iterating through mpsc thread entries #113861

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merged 1 commit into from
Jul 20, 2023

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ibraheemdev
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Upstream fix: crossbeam-rs/crossbeam#802. Possibly fixes #113726.

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rustbot commented Jul 19, 2023

r? @Mark-Simulacrum

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Jul 19, 2023
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@bors r+

Also nominating for beta backport, not sure if the beta std also has this problem.

(It also sounds like this isn't a complete fix, just patching over some underlying problem).

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bors commented Jul 19, 2023

📌 Commit fb31a1a has been approved by Mark-Simulacrum

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 19, 2023
@Mark-Simulacrum Mark-Simulacrum added beta-nominated Nominated for backporting to the compiler in the beta channel. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jul 19, 2023
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bors commented Jul 20, 2023

⌛ Testing commit fb31a1a with merge 6b53175...

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bors commented Jul 20, 2023

☀️ Test successful - checks-actions
Approved by: Mark-Simulacrum
Pushing 6b53175 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Jul 20, 2023
@bors bors merged commit 6b53175 into rust-lang:master Jul 20, 2023
@rustbot rustbot added this to the 1.73.0 milestone Jul 20, 2023
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Finished benchmarking commit (6b53175): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
2.8% [2.8%, 2.8%] 1
Regressions ❌
(secondary)
2.3% [2.3%, 2.3%] 1
Improvements ✅
(primary)
-2.6% [-3.1%, -2.1%] 2
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) -0.8% [-3.1%, 2.8%] 3

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
0.0% [0.0%, 0.1%] 4
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 0.0% [0.0%, 0.1%] 4

Bootstrap: 649.458s -> 648.618s (-0.13%)

@Amanieu Amanieu added the beta-accepted Accepted for backporting to the compiler in the beta channel. label Jul 26, 2023
@cuviper cuviper mentioned this pull request Aug 12, 2023
@cuviper cuviper modified the milestones: 1.73.0, 1.72.0 Aug 12, 2023
@cuviper cuviper removed the beta-nominated Nominated for backporting to the compiler in the beta channel. label Aug 12, 2023
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 12, 2023
[beta] backport

* Restrict linker version script of proc-macro crates to just its two symbols rust-lang#114470
* bootstrap: config: fix version comparison bug rust-lang#114440
* lint/ctypes: only try normalize rust-lang#113921
* Avoid tls access while iterating through mpsc thread entries rust-lang#113861
* Substitute types before checking inlining compatibility. rust-lang#113802
* Revert "fix: bug etc/bash_complettion -> src/etc/... to avoid copy error" rust-lang#113579
* lint/ctypes: fix () return type checks rust-lang#113457
* Rename and allow cast_ref_to_mut lint rust-lang#113422
* Ignore flaky clippy tests. rust-lang#113621

r? cuviper
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Successfully merging this pull request may close these issues.

Segfault in std::sync::mpmc::waker::SyncWaker::notify
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