use std::sync::atomic::{AtomicI64, Ordering};
#[derive(Debug)]
pub struct Counter {
value: AtomicI64,
}
impl Counter {
pub(crate) fn new() -> Counter {
Counter {
value: AtomicI64::new(0),
}
}
pub fn inc(&self, n: i64) {
self.value.fetch_add(n, Ordering::Relaxed);
}
pub fn dec(&self, n: i64) {
self.value.fetch_sub(n, Ordering::Relaxed);
}
pub fn value(&self) -> i64 {
self.value.load(Ordering::Relaxed)
}
}