Struct loom::sync::atomic::AtomicU32

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pub struct AtomicU32(_);

Expand description

Mock implementation of std::sync::atomic::AtomicU32.

NOTE: Unlike std::sync::atomic::AtomicU32, this type has a different in-memory representation than u32.

Implementations

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impl AtomicU32

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pub fn new(v: u32) -> Self

Creates a new instance of AtomicU32.

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pub fn with_mut<R>(&mut self, f: impl FnOnce(&mut u32) -> R) -> R

Get access to a mutable reference to the inner value.

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pub unsafe fn unsync_load(&self) -> u32

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) -> u32

Loads a value from the atomic integer.

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pub fn store(&self, val: u32, order: Ordering)

Stores a value into the atomic integer.

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pub fn swap(&self, val: u32, order: Ordering) -> u32

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

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pub fn compare_and_swap(&self, current: u32, new: u32, order: Ordering) -> u32

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: u32,
 new: u32,
 success: Ordering,
 failure: Ordering
) -> Result<u32, u32>

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: u32,
 new: u32,
 success: Ordering,
 failure: Ordering
) -> Result<u32, u32>

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: u32, order: Ordering) -> u32

Adds to the current value, returning the previous value.

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pub fn fetch_sub(&self, val: u32, order: Ordering) -> u32

Subtracts from the current value, returning the previous value.

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pub fn fetch_and(&self, val: u32, order: Ordering) -> u32

Bitwise “and” with the current value.

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pub fn fetch_nand(&self, val: u32, order: Ordering) -> u32

Bitwise “nand” with the current value.

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pub fn fetch_or(&self, val: u32, order: Ordering) -> u32

Bitwise “or” with the current value.

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pub fn fetch_xor(&self, val: u32, order: Ordering) -> u32

Bitwise “xor” with the current value.

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pub fn fetch_max(&self, val: u32, order: Ordering) -> u32

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

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pub fn fetch_min(&self, val: u32, order: Ordering) -> u32

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<u32, u32> where
 F: FnMut(u32) -> Option<u32>,

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).