Trait AtomicConsume 

pub trait AtomicConsume {
    type Val;

    // Required method
    fn load_consume(&self) -> Self::Val;
}

Trait which allows reading from primitive atomic types with “consume” ordering.

Required Associated Types

type Val

Type returned by load_consume.

Required Methods

fn load_consume(&self) -> Self::Val

Loads a value from the atomic using a “consume” memory ordering.

This is similar to the “acquire” ordering, except that an ordering is only guaranteed with operations that “depend on” the result of the load. However consume loads are usually much faster than acquire loads on architectures with a weak memory model since they don’t require memory fence instructions.

The exact definition of “depend on” is a bit vague, but it works as you would expect in practice since a lot of software, especially the Linux kernel, rely on this behavior.

This is currently only implemented on ARM and AArch64, where a fence can be avoided. On other architectures this will fall back to a simple load(Ordering::Acquire).

Implementations on Foreign Types

impl AtomicConsume for AtomicBool

Available on non-crossbeam_no_atomic only.

type Val = bool

fn load_consume(&self) -> <AtomicBool as AtomicConsume>::Val

impl AtomicConsume for AtomicI8

Available on non-crossbeam_no_atomic only.

type Val = i8

fn load_consume(&self) -> <AtomicI8 as AtomicConsume>::Val

impl AtomicConsume for AtomicI16

Available on non-crossbeam_no_atomic only.

type Val = i16

fn load_consume(&self) -> <AtomicI16 as AtomicConsume>::Val

impl AtomicConsume for AtomicI32

Available on non-crossbeam_no_atomic only.

type Val = i32

fn load_consume(&self) -> <AtomicI32 as AtomicConsume>::Val

impl AtomicConsume for AtomicI64

Available on non-crossbeam_no_atomic only.

type Val = i64

fn load_consume(&self) -> <AtomicI64 as AtomicConsume>::Val

impl AtomicConsume for AtomicIsize

Available on non-crossbeam_no_atomic only.

type Val = isize

fn load_consume(&self) -> <AtomicIsize as AtomicConsume>::Val

impl AtomicConsume for AtomicU8

Available on non-crossbeam_no_atomic only.

type Val = u8

fn load_consume(&self) -> <AtomicU8 as AtomicConsume>::Val

impl AtomicConsume for AtomicU16

Available on non-crossbeam_no_atomic only.

type Val = u16

fn load_consume(&self) -> <AtomicU16 as AtomicConsume>::Val

impl AtomicConsume for AtomicU32

Available on non-crossbeam_no_atomic only.

type Val = u32

fn load_consume(&self) -> <AtomicU32 as AtomicConsume>::Val

impl AtomicConsume for AtomicU64

Available on non-crossbeam_no_atomic only.

type Val = u64

fn load_consume(&self) -> <AtomicU64 as AtomicConsume>::Val

impl AtomicConsume for AtomicUsize

Available on non-crossbeam_no_atomic only.

type Val = usize

fn load_consume(&self) -> <AtomicUsize as AtomicConsume>::Val

impl<T> AtomicConsume for AtomicPtr<T>

Available on non-crossbeam_no_atomic only.

type Val = *mut T

fn load_consume(&self) -> <AtomicPtr<T> as AtomicConsume>::Val

Implementors