solana_atomic_u64/
lib.rs

1pub use implementation::AtomicU64;
2
3#[cfg(target_pointer_width = "64")]
4mod implementation {
5    use std::sync::atomic;
6
7    pub struct AtomicU64(atomic::AtomicU64);
8
9    impl AtomicU64 {
10        pub const fn new(initial: u64) -> Self {
11            Self(atomic::AtomicU64::new(initial))
12        }
13
14        pub fn fetch_add(&self, v: u64) -> u64 {
15            self.0.fetch_add(v, atomic::Ordering::Relaxed)
16        }
17    }
18}
19
20#[cfg(not(target_pointer_width = "64"))]
21mod implementation {
22    use parking_lot::{const_mutex, Mutex};
23
24    pub struct AtomicU64(Mutex<u64>);
25
26    impl AtomicU64 {
27        pub const fn new(initial: u64) -> Self {
28            Self(const_mutex(initial))
29        }
30
31        pub fn fetch_add(&self, v: u64) -> u64 {
32            let mut lock = self.0.lock();
33            let i = *lock;
34            *lock = i + v;
35            i
36        }
37    }
38}
solana_atomic_u64/lib.rs

solana_atomic_u64/
lib.rs
