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Relax memory ordering used in min_stack #96616

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Merged
merged 1 commit into from May 5, 2022
Merged

Relax memory ordering used in min_stack #96616

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4 changes: 2 additions & 2 deletions library/std/src/sys_common/thread.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ use crate::sys::thread as imp;

pub fn min_stack() -> usize {
static MIN: atomic::AtomicUsize = atomic::AtomicUsize::new(0);
match MIN.load(Ordering::SeqCst) {
match MIN.load(Ordering::Relaxed) {
0 => {}
n => return n - 1,
}
Expand All @@ -13,6 +13,6 @@ pub fn min_stack() -> usize {

// 0 is our sentinel value, so ensure that we'll never see 0 after
// initialization has run
MIN.store(amt + 1, Ordering::SeqCst);
MIN.store(amt + 1, Ordering::Relaxed);
amt
}