7167a5e44d
A minor simplification using the corresponding new standard library function. Bumps minimum Rust version to 1.45.0
33 lines
710 B
Rust
33 lines
710 B
Rust
use std::sync::atomic::AtomicUsize;
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use std::sync::atomic::Ordering::SeqCst;
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#[derive(Debug)]
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pub struct AtomicMin {
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val: AtomicUsize,
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}
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impl AtomicMin {
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pub fn new(init: Option<usize>) -> Self {
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Self {
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val: AtomicUsize::new(init.unwrap_or(usize::max_value())),
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}
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}
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pub fn get(&self) -> Option<usize> {
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let val = self.val.load(SeqCst);
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if val == usize::max_value() {
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None
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} else {
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Some(val)
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}
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}
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/// Unset value is usize_max
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pub fn as_atomic_usize(&self) -> &AtomicUsize {
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&self.val
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}
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pub fn set_min(&self, new_val: usize) {
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self.val.fetch_min(new_val, SeqCst);
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}
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}
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