37 lines
710 B
Rust
37 lines
710 B
Rust
use std::sync::{
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Arc,
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atomic::{AtomicU32, Ordering},
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};
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#[derive(Debug)]
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pub struct RefCounter(Arc<AtomicU32>);
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impl RefCounter {
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pub fn new() -> Self {
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Self(Arc::new(0.into()))
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}
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pub fn refs(&self) -> u32 {
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self.0.load(Ordering::Acquire)
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}
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pub fn drop(&mut self) -> bool {
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let refs = self.0.fetch_sub(1, Ordering::Release);
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refs == 0
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}
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pub fn quiet_clone(&self) -> Self {
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Self(self.0.clone())
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}
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}
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impl Default for RefCounter {
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fn default() -> Self {
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Self::new()
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}
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}
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impl Clone for RefCounter {
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fn clone(&self) -> Self {
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self.0.fetch_add(1, Ordering::Release);
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Self(self.0.clone())
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}
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}
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