Struct DmaSlot 

pub struct DmaSlot { /* private fields */ }

Per-transfer slot — wakes the caller and stores the completion result. UnsafeCell rather than Mutex because we use atomics for the state field, and AtomicWaker is itself interior-mut-safe.

Implementations

impl DmaSlot

pub const PENDING: i32 = i32::MIN

Sentinel marking a transfer still in flight. i32::MIN is well outside the negative-OVE-error range (which is -1 to -20-ish).

pub const fn new() -> Self

pub fn reset(&self)

pub fn result_store(&self, value: i32)

pub fn result_load(&self) -> i32

pub fn register(&self, w: &Waker)

pub fn wake(&self)