atlas_atomic_u64/
lib.rs

1#![no_std]
2#![cfg_attr(docsrs, feature(doc_cfg))]
3pub use implementation::AtomicU64;
4
5#[cfg(target_pointer_width = "64")]
6mod implementation {
7    use core::sync::atomic;
8
9    pub struct AtomicU64(atomic::AtomicU64);
10
11    impl AtomicU64 {
12        pub const fn new(initial: u64) -> Self {
13            Self(atomic::AtomicU64::new(initial))
14        }
15
16        pub fn fetch_add(&self, v: u64) -> u64 {
17            self.0.fetch_add(v, atomic::Ordering::Relaxed)
18        }
19    }
20}
21
22#[cfg(not(target_pointer_width = "64"))]
23mod implementation {
24    use parking_lot::{const_mutex, Mutex};
25
26    pub struct AtomicU64(Mutex<u64>);
27
28    impl AtomicU64 {
29        pub const fn new(initial: u64) -> Self {
30            Self(const_mutex(initial))
31        }
32
33        pub fn fetch_add(&self, v: u64) -> u64 {
34            let mut lock = self.0.lock();
35            let i = *lock;
36            *lock = i + v;
37            i
38        }
39    }
40}
atlas_atomic_u64/lib.rs

atlas_atomic_u64/
lib.rs
