mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-23 19:43:20 +00:00
45 lines
2.6 KiB
Rust
45 lines
2.6 KiB
Rust
#![warn(clippy::invalid_atomic_ordering)]
|
|
|
|
use std::sync::atomic::{AtomicIsize, Ordering};
|
|
|
|
fn main() {
|
|
// `fetch_update` testing
|
|
let x = AtomicIsize::new(0);
|
|
|
|
// Allowed ordering combos
|
|
let _ = x.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Acquire, Ordering::Acquire, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Acquire, Ordering::Relaxed, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Release, Ordering::Relaxed, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::AcqRel, Ordering::Acquire, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::AcqRel, Ordering::Relaxed, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::SeqCst, Ordering::Relaxed, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::SeqCst, Ordering::Acquire, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::SeqCst, Ordering::SeqCst, |old| Some(old + 1));
|
|
|
|
// AcqRel is always forbidden as a failure ordering
|
|
let _ = x.fetch_update(Ordering::Relaxed, Ordering::AcqRel, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Acquire, Ordering::AcqRel, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Release, Ordering::AcqRel, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::AcqRel, Ordering::AcqRel, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::SeqCst, Ordering::AcqRel, |old| Some(old + 1));
|
|
|
|
// Release is always forbidden as a failure ordering
|
|
let _ = x.fetch_update(Ordering::Relaxed, Ordering::Release, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Acquire, Ordering::Release, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Release, Ordering::Release, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::AcqRel, Ordering::Release, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::SeqCst, Ordering::Release, |old| Some(old + 1));
|
|
|
|
// Release success order forbids failure order of Acquire or SeqCst
|
|
let _ = x.fetch_update(Ordering::Release, Ordering::Acquire, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Release, Ordering::SeqCst, |old| Some(old + 1));
|
|
|
|
// Relaxed success order also forbids failure order of Acquire or SeqCst
|
|
let _ = x.fetch_update(Ordering::Relaxed, Ordering::SeqCst, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::Relaxed, Ordering::Acquire, |old| Some(old + 1));
|
|
|
|
// Acquire/AcqRel forbids failure order of SeqCst
|
|
let _ = x.fetch_update(Ordering::Acquire, Ordering::SeqCst, |old| Some(old + 1));
|
|
let _ = x.fetch_update(Ordering::AcqRel, Ordering::SeqCst, |old| Some(old + 1));
|
|
}
|