#[repr(transparent)]
pub struct AtomicCell<T> { /* private fields */ }
Expand description

A thread-safe mutable memory location.

This type is equivalent to Cell, except it can also be shared among multiple threads.

Operations on AtomicCells use atomic instructions whenever possible, and synchronize using global locks otherwise. You can call AtomicCell::<T>::is_lock_free() to check whether atomic instructions or locks will be used.

Atomic loads use the Acquire ordering and atomic stores use the Release ordering.

Implementations

Creates a new atomic cell initialized with val.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);

Consumes the atomic and returns the contained value.

This is safe because passing self by value guarantees that no other threads are concurrently accessing the atomic data.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);
let v = a.into_inner();

assert_eq!(v, 7);

Returns true if operations on values of this type are lock-free.

If the compiler or the platform doesn’t support the necessary atomic instructions, AtomicCell<T> will use global locks for every potentially concurrent atomic operation.

Examples
use crossbeam_utils::atomic::AtomicCell;

// This type is internally represented as `AtomicUsize` so we can just use atomic
// operations provided by it.
assert_eq!(AtomicCell::<usize>::is_lock_free(), true);

// A wrapper struct around `isize`.
struct Foo {
    bar: isize,
}
// `AtomicCell<Foo>` will be internally represented as `AtomicIsize`.
assert_eq!(AtomicCell::<Foo>::is_lock_free(), true);

// Operations on zero-sized types are always lock-free.
assert_eq!(AtomicCell::<()>::is_lock_free(), true);

// Very large types cannot be represented as any of the standard atomic types, so atomic
// operations on them will have to use global locks for synchronization.
assert_eq!(AtomicCell::<[u8; 1000]>::is_lock_free(), false);

Stores val into the atomic cell.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);

assert_eq!(a.load(), 7);
a.store(8);
assert_eq!(a.load(), 8);

Stores val into the atomic cell and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);

assert_eq!(a.load(), 7);
assert_eq!(a.swap(8), 7);
assert_eq!(a.load(), 8);

Returns a raw pointer to the underlying data in this atomic cell.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(5);

let ptr = a.as_ptr();

Takes the value of the atomic cell, leaving Default::default() in its place.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(5);
let five = a.take();

assert_eq!(five, 5);
assert_eq!(a.into_inner(), 0);

Loads a value from the atomic cell.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);

assert_eq!(a.load(), 7);
👎 Deprecated:

Use compare_exchange instead

If the current value equals current, stores new into the atomic cell.

The return value is always the previous value. If it is equal to current, then the value was updated.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(1);

assert_eq!(a.compare_and_swap(2, 3), 1);
assert_eq!(a.load(), 1);

assert_eq!(a.compare_and_swap(1, 2), 1);
assert_eq!(a.load(), 2);

If the current value equals current, stores new into the atomic cell.

The return value is a result indicating whether the new value was written and containing the previous value. On success this value is guaranteed to be equal to current.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(1);

assert_eq!(a.compare_exchange(2, 3), Err(1));
assert_eq!(a.load(), 1);

assert_eq!(a.compare_exchange(1, 2), Ok(1));
assert_eq!(a.load(), 2);

Fetches the value, and applies a function to it that returns an optional new value. Returns a Result of Ok(previous_value) if the function returned Some(_), else Err(previous_value).

Note: This may call the function multiple times if the value has been changed from other threads in the meantime, as long as the function returns Some(_), but the function will have been applied only once to the stored value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7);
assert_eq!(a.fetch_update(|_| None), Err(7));
assert_eq!(a.fetch_update(|a| Some(a + 1)), Ok(7));
assert_eq!(a.fetch_update(|a| Some(a + 1)), Ok(8));
assert_eq!(a.load(), 9);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u8);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i8);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u16);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i16);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u32);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i32);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u64);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i64);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_max(2), 7);
assert_eq!(a.load(), 7);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7u128);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_max(2), 7);
assert_eq!(a.load(), 7);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7i128);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7usize);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Increments the current value by val and returns the previous value.

The addition wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_add(3), 7);
assert_eq!(a.load(), 10);

Decrements the current value by val and returns the previous value.

The subtraction wraps on overflow.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_sub(3), 7);
assert_eq!(a.load(), 4);

Applies bitwise “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_and(3), 7);
assert_eq!(a.load(), 3);

Applies bitwise “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_nand(3), 7);
assert_eq!(a.load(), !(7 & 3));

Applies bitwise “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_or(16), 7);
assert_eq!(a.load(), 23);

Applies bitwise “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_xor(2), 7);
assert_eq!(a.load(), 5);

Compares and sets the maximum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_max(9), 7);
assert_eq!(a.load(), 9);

Compares and sets the minimum of the current value and val, and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(7isize);

assert_eq!(a.fetch_min(2), 7);
assert_eq!(a.load(), 2);

Applies logical “and” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(true);

assert_eq!(a.fetch_and(true), true);
assert_eq!(a.load(), true);

assert_eq!(a.fetch_and(false), true);
assert_eq!(a.load(), false);

Applies logical “nand” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(true);

assert_eq!(a.fetch_nand(false), true);
assert_eq!(a.load(), true);

assert_eq!(a.fetch_nand(true), true);
assert_eq!(a.load(), false);

assert_eq!(a.fetch_nand(false), false);
assert_eq!(a.load(), true);

Applies logical “or” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(false);

assert_eq!(a.fetch_or(false), false);
assert_eq!(a.load(), false);

assert_eq!(a.fetch_or(true), false);
assert_eq!(a.load(), true);

Applies logical “xor” to the current value and returns the previous value.

Examples
use crossbeam_utils::atomic::AtomicCell;

let a = AtomicCell::new(true);

assert_eq!(a.fetch_xor(false), true);
assert_eq!(a.load(), true);

assert_eq!(a.fetch_xor(true), true);
assert_eq!(a.load(), false);

Trait Implementations

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

Executes the destructor for this type. Read more

Converts to this type from the input type.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Converts to this type from the input type.

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.