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impl multiprocessing SemLock #6542

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Merged
youknowone merged 9 commits into from
Jan 2, 2026
Merged

impl multiprocessing SemLock #6542

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f11e2e5
Initial plan
Copilot Dec 25, 2025
cca9889
Changes before error encountered
Copilot Dec 25, 2025
4372866
Implement Unix SemLock and expose sem_unlink
Copilot Dec 25, 2025
99d1350
Fix missing sem_* symbols on libc targets
Copilot Dec 25, 2025
e5e3427
Fix SemLock constant interning to avoid panic
Copilot Dec 25, 2025
56a7f07
impl SemLock
youknowone Jan 2, 2026
70ff68a
Update multiprocessing tests from 3.13.11
youknowone Jan 2, 2026
efdf8a7
mark tests
youknowone Jan 2, 2026
3979249
apply review
youknowone Jan 2, 2026
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Fix missing sem_* symbols on libc targets 
Co-authored-by: youknowone <69878+youknowone@users.noreply.github.com>
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@youknowone
Copilot and youknowone committed Jan 2, 2026
commit 99d13501d7f72c1fb6cbe0ffade5de1d67b5fc55
4 changes: 4 additions & 0 deletions crates/stdlib/src/multiprocessing.rs
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Expand Up @@ -57,6 +57,10 @@ mod _multiprocessing {
sync::atomic::{AtomicU64, AtomicUsize, Ordering},
time::Duration,
};
unsafe extern "C" {
fn sem_getvalue(sem: *mut sem_t, sval: *mut libc::c_int) -> libc::c_int;
fn sem_timedwait(sem: *mut sem_t, abs_timeout: *const libc::timespec) -> libc::c_int;
}

const RECURSIVE_MUTEX_KIND: i32 = 0;
const SEMAPHORE_KIND: i32 = 1;
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