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Alter Once to remove unnecessary SeqCst usage #31650

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Alter Once to remove unnecessary SeqCst usage #31650

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4 changes: 2 additions & 2 deletions src/libstd/sync/once.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -201,7 +201,7 @@ impl Once {
#[stable(feature = "rust1", since = "1.0.0")]
pub fn call_once<F>(&'static self, f: F) where F: FnOnce() {
// Fast path, just see if we've completed initialization.
if self.state.load(Ordering::SeqCst) == COMPLETE {
if self.state.load(Ordering::Acquire) == COMPLETE {
return
}

Expand All @@ -222,7 +222,7 @@ impl Once {
#[unstable(feature = "once_poison", issue = "31688")]
pub fn call_once_force<F>(&'static self, f: F) where F: FnOnce(&OnceState) {
// same as above, just with a different parameter to `call_inner`.
if self.state.load(Ordering::SeqCst) == COMPLETE {
if self.state.load(Ordering::Acquire) == COMPLETE {
return
}

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