Use futex-based thread::park/unpark on Linux. #76919
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r? @kennytm (rust_highfive has picked a reviewer for you, use r? to override) |
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Hm, looks like WaitOnAddress is only available on Windows 8+, but the Rust documentation promises tier 1 support for Windows 7+. Reverting the Windows part for now. |
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@rustbot modify labels: +T-libs +A-concurrency +O-linux |
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📌 Commit 0b73fd7 has been approved by |
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☀️ Test successful - checks-actions, checks-azure |
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Tested on commit rust-lang/rust@7820135. Direct link to PR: <rust-lang/rust#76919> 💔 miri on linux: test-pass → test-fail (cc @oli-obk @eddyb @RalfJung).
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This moves the parking/unparking logic out of
thread/mod.rsinto a module namedthread_parkerinsys_common. The current implementation is moved tosys_common/thread_parker/generic.rsand the new implementation using futexes is added insys_common/thread_parker/futex.rs.