std: move `thread` into `sys` #145177

joboet · 2025-08-09T17:48:01Z

rustbot · 2025-08-09T17:48:05Z

rustbot has assigned @ChrisDenton.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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rustbot · 2025-08-09T21:40:50Z

The Miri subtree was changed

cc @rust-lang/miri

bors · 2025-08-15T20:03:13Z

☔ The latest upstream changes (presumably #145450) made this pull request unmergeable. Please resolve the merge conflicts.

ChrisDenton · 2025-08-23T07:56:40Z

Sorry for the delay, I'm not keeping on top of my review queue right now so I'll assign someone else.

r? libs

joboet · 2025-08-29T18:39:30Z

I've split out the renaming part into a separate commit in order to simplify the diff. Unfortunately, the UNIX one is still rather large due to the amount of code movement. https://semanticdiff.com/ makes it nice and simple, but unfortunately requires signing in so I can't share a link (maybe someone knows of a better alternative?).

bors · 2025-09-03T18:38:15Z

☔ The latest upstream changes (presumably #146160) made this pull request unmergeable. Please resolve the merge conflicts.

ibraheemdev · 2025-09-03T23:08:48Z

This looks good. r=me after the rebase.

rustbot · 2025-09-08T15:12:40Z

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

joboet · 2025-09-08T16:43:39Z

@bors r=@ibraheemdev

joboet · 2025-09-10T13:28:12Z

@bors r=@ibraheemdev rollup=never

bors · 2025-09-10T13:28:15Z

📌 Commit f049b61 has been approved by ibraheemdev

It is now in the queue for this repository.

std: move `thread` into `sys` Part of #117276.

bors · 2025-09-11T12:08:36Z

⌛ Testing commit f049b61 with merge 054fa65...

rust-log-analyzer · 2025-09-11T12:53:39Z

The job dist-i686-msvc failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

bors · 2025-09-11T12:54:33Z

💔 Test failed - checks-actions

joboet · 2025-09-11T12:58:53Z

That was a spurious failure...
@bors retry

bors · 2025-09-11T22:31:47Z

⌛ Testing commit f049b61 with merge 2a9bacf...

bors · 2025-09-12T01:34:25Z

☀️ Test successful - checks-actions
Approved by: ibraheemdev
Pushing 2a9bacf to master...

github-actions · 2025-09-12T01:37:12Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing 5eda692 (parent) -> 2a9bacf (this PR)

Test differences

No test diffs found

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 2a9bacf6187685931d52346a0ecff2e52bdc91cc --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

dist-apple-various: 4687.7s -> 3152.1s (-32.8%)
dist-aarch64-apple: 7911.0s -> 8829.8s (11.6%)
dist-ohos-armv7: 4000.9s -> 4341.6s (8.5%)
dist-i686-msvc: 7655.5s -> 8191.3s (7.0%)
x86_64-msvc-ext1: 7454.3s -> 7969.2s (6.9%)
dist-various-1: 4143.4s -> 3898.6s (-5.9%)
dist-armhf-linux: 5190.3s -> 4885.4s (-5.9%)
x86_64-gnu-llvm-19: 2605.1s -> 2455.2s (-5.8%)
x86_64-gnu-llvm-19-2: 5806.3s -> 5482.1s (-5.6%)
dist-aarch64-msvc: 5942.2s -> 5611.8s (-5.6%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2025-09-12T04:11:34Z

Finished benchmarking commit (2a9bacf): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.7%	[-0.9%, -0.6%]	2
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (secondary 3.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	3.2%	[2.2%, 4.7%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

Results (primary 2.0%, secondary 3.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	2.0%	[2.0%, 2.0%]	1
Regressions ❌ (secondary)	3.1%	[2.1%, 4.1%]	8
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	2.0%	[2.0%, 2.0%]	1

Binary size

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

Bootstrap: 467.659s -> 467.159s (-0.11%)
Artifact size: 387.85 MiB -> 387.82 MiB (-0.01%)

…=joboet Fix unsupported `std::sys::thread` after move Fixes building std for any platform with an unsupported thread abstraction. This includes {aarch64,armv7,x86_64}-unknown-trusty and riscv32im-risc0-zkvm-elf, which explicitly include the unsupported module, and platforms with no PAL. Bug fix for rust-lang#145177 (std: move thread into sys). Also fix the `std` build for xtensa, which I incidentally found while looking for an unsupported platform. r? `@joboet`

…=joboet Fix unsupported `std::sys::thread` after move Fixes building std for any platform with an unsupported thread abstraction. This includes {aarch64,armv7,x86_64}-unknown-trusty and riscv32im-risc0-zkvm-elf, which explicitly include the unsupported module, and platforms with no PAL. Bug fix for rust-lang#145177 (std: move thread into sys). Also fix the `std` build for xtensa, which I incidentally found while looking for an unsupported platform. r? ``@joboet``

Rollup merge of #146800 - thaliaarchi:fix-move-pal-thread, r=joboet Fix unsupported `std::sys::thread` after move Fixes building std for any platform with an unsupported thread abstraction. This includes {aarch64,armv7,x86_64}-unknown-trusty and riscv32im-risc0-zkvm-elf, which explicitly include the unsupported module, and platforms with no PAL. Bug fix for #145177 (std: move thread into sys). Also fix the `std` build for xtensa, which I incidentally found while looking for an unsupported platform. r? ``@joboet``

Fix unsupported `std::sys::thread` after move Fixes building std for any platform with an unsupported thread abstraction. This includes {aarch64,armv7,x86_64}-unknown-trusty and riscv32im-risc0-zkvm-elf, which explicitly include the unsupported module, and platforms with no PAL. Bug fix for rust-lang/rust#145177 (std: move thread into sys). Also fix the `std` build for xtensa, which I incidentally found while looking for an unsupported platform. r? ``@joboet``

rustbot assigned ChrisDenton Aug 9, 2025

joboet mentioned this pull request Aug 9, 2025

Tracking Issue for restructuring std::sys #117276

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rustbot assigned ibraheemdev and unassigned ChrisDenton Aug 23, 2025

joboet force-pushed the move-pal-thread branch from 8c26010 to f6ae04a Compare August 29, 2025 15:30

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joboet force-pushed the move-pal-thread branch 2 times, most recently from 793af86 to 10844c3 Compare August 29, 2025 16:49

std: move thread into sys (rename only)

4b15dd5

joboet force-pushed the move-pal-thread branch from 10844c3 to 078cc24 Compare September 8, 2025 15:12

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Sep 10, 2025

joboet added 2 commits September 10, 2025 15:26

std: move thread into sys

ad08577

bless miri tests

f049b61

joboet force-pushed the move-pal-thread branch from 27b1936 to f049b61 Compare September 10, 2025 13:27

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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Sep 10, 2025

bors added a commit that referenced this pull request Sep 11, 2025

Auto merge of #145177 - joboet:move-pal-thread, r=ibraheemdev

054fa65

std: move `thread` into `sys` Part of #117276.

bors added 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 Sep 11, 2025

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 Sep 11, 2025

bors added the merged-by-bors This PR was explicitly merged by bors. label Sep 12, 2025

bors merged commit 2a9bacf into rust-lang:master Sep 12, 2025
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rustbot added this to the 1.91.0 milestone Sep 12, 2025

thaliaarchi mentioned this pull request Sep 20, 2025

Fix unsupported std::sys::thread after move #146800

Merged

std: move thread into sys #145177

std: move thread into sys #145177

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Test differences

Job duration changes

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rust-timer commented Sep 12, 2025

Overall result: ✅ improvements - no action needed

Instruction count

Max RSS (memory usage)

Cycles

Binary size

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std: move `thread` into `sys` #145177

std: move `thread` into `sys` #145177