Struct compio_driver::Key

pub struct Key<T: ?Sized> { /* private fields */ }

A typed wrapper for key of Ops submitted into driver. It doesn’t free the inner on dropping. Instead, the memory is managed by the proactor. The inner is only freed when:

1. The op is completed and the future asks the result. into_inner will be called by the proactor.
2. The op is completed and the future cancels it. into_box will be called by the proactor.

Implementations

impl<T: ?Sized> Key<T>

pub unsafe fn new_unchecked(user_data: usize) -> Self

Create a new Key with the given user data.

Safety

Caller needs to ensure that T does correspond to user_data in driver this Key is created with. In most cases, it is enough to let T be dyn OpCode.

pub fn user_data(&self) -> usize

Get the unique user-defined data.

Trait Implementations

impl<T: ?Sized> Debug for Key<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Hash + ?Sized> Hash for Key<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: PartialEq + ?Sized> PartialEq for Key<T>

fn eq(&self, other: &Key<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Eq + ?Sized> Eq for Key<T>

impl<T: ?Sized> StructuralPartialEq for Key<T>

impl<T: ?Sized> Unpin for Key<T>