loom 0.3.4

Permutation testing for concurrent code
Documentation 
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//! Mock implementation of `std::sync::atomic`.

mod atomic;
use self::atomic::Atomic;

mod bool;
pub use self::bool::AtomicBool;

mod int;
pub use self::int::{AtomicU16, AtomicU32, AtomicU64, AtomicU8, AtomicUsize};

mod ptr;
pub use self::ptr::AtomicPtr;

pub use std::sync::atomic::Ordering;

/// Signals the processor that it is entering a busy-wait spin-loop.
pub fn spin_loop_hint() {
    crate::thread::yield_now();
}

/// An atomic fence.
pub fn fence(order: Ordering) {
    crate::rt::fence(order);
}