Struct loom::sync::atomic::AtomicU8

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pub struct AtomicU8(_);

Expand description

Mock implementation of std::sync::atomic::AtomicU8.

NOTE: Unlike std::sync::atomic::AtomicU8, this type has a different in-memory representation than u8.

Implementations

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impl AtomicU8

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pub fn new(v: u8) -> Self

Creates a new instance of AtomicU8.

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pub fn with_mut<R>(&mut self, f: impl FnOnce(&mut u8) -> R) -> R

Get access to a mutable reference to the inner value.

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pub unsafe fn unsync_load(&self) -> u8

Load the value without any synchronization.

An unsynchronized atomic load technically always has undefined behavior. However, if the atomic value is not currently visible by other threads, this should always be equivalent to a non-atomic load of an un-shared integer value.

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pub fn load(&self, order: Ordering) -> u8

Loads a value from the atomic integer.

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pub fn store(&self, val: u8, order: Ordering)

Stores a value into the atomic integer.

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pub fn swap(&self, val: u8, order: Ordering) -> u8

Stores a value into the atomic integer, returning the previous value.

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pub fn compare_and_swap(&self, current: u8, new: u8, order: Ordering) -> u8

Stores a value into the atomic integer if the current value is the same as the current value.

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pub fn compare_exchange(
 &self,
 current: u8,
 new: u8,
 success: Ordering,
 failure: Ordering
) -> Result<u8, u8>

Stores a value into the atomic if the current value is the same as the current value.

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pub fn compare_exchange_weak(
 &self,
 current: u8,
 new: u8,
 success: Ordering,
 failure: Ordering
) -> Result<u8, u8>

Stores a value into the atomic if the current value is the same as the current value.

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pub fn fetch_add(&self, val: u8, order: Ordering) -> u8

Adds to the current value, returning the previous value.

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pub fn fetch_sub(&self, val: u8, order: Ordering) -> u8

Subtracts from the current value, returning the previous value.

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pub fn fetch_and(&self, val: u8, order: Ordering) -> u8

Bitwise “and” with the current value.

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pub fn fetch_nand(&self, val: u8, order: Ordering) -> u8

Bitwise “nand” with the current value.

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pub fn fetch_or(&self, val: u8, order: Ordering) -> u8

Bitwise “or” with the current value.

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pub fn fetch_xor(&self, val: u8, order: Ordering) -> u8

Bitwise “xor” with the current value.

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pub fn fetch_max(&self, val: u8, order: Ordering) -> u8

Stores the maximum of the current and provided value, returning the previous value

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pub fn fetch_min(&self, val: u8, order: Ordering) -> u8

Stores the minimum of the current and provided value, returning the previous value

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pub fn fetch_update<F>(
 &self,
 set_order: Ordering,
 fetch_order: Ordering,
 f: F
) -> Result<u8, u8> where
 F: FnMut(u8) -> Option<u8>,

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).