[][src]Struct core::task::RawWakerVTable

pub struct RawWakerVTable { /* fields omitted */ }
🔬 This is a nightly-only experimental API. (futures_api #50547)

futures in libcore are unstable

A virtual function pointer table (vtable) that specifies the behavior of a RawWaker.

The pointer passed to all functions inside the vtable is the data pointer from the enclosing RawWaker object.

The functions inside this struct are only intended be called on the data pointer of a properly constructed RawWaker object from inside the RawWaker implementation. Calling one of the contained functions using any other data pointer will cause undefined behavior.

Methods

impl RawWakerVTable[src]

pub const fn new(
    clone: unsafe fn(_: *const ()) -> RawWaker,
    wake: unsafe fn(_: *const ()),
    drop: unsafe fn(_: *const ())
) -> Self
[src]

🔬 This is a nightly-only experimental API. (futures_api #50547)

futures in libcore are unstable

Creates a new RawWakerVTable from the provided clone, wake, and drop functions.

clone

This function will be called when the RawWaker gets cloned, e.g. when the Waker in which the RawWaker is stored gets cloned.

The implementation of this function must retain all resources that are required for this additional instance of a RawWaker and associated task. Calling wake on the resulting RawWaker should result in a wakeup of the same task that would have been awoken by the original RawWaker.

wake

This function will be called when wake is called on the Waker. It must wake up the task associated with this RawWaker.

The implemention of this function must not consume the provided data pointer.

drop

This function gets called when a RawWaker gets dropped.

The implementation of this function must make sure to release any resources that are associated with this instance of a RawWaker and associated task.

Trait Implementations

impl Copy for RawWakerVTable[src]

impl PartialEq<RawWakerVTable> for RawWakerVTable[src]

impl Clone for RawWakerVTable[src]

fn clone_from(&mut self, source: &Self)
1.0.0
[src]

Performs copy-assignment from source. Read more

impl Debug for RawWakerVTable[src]

Auto Trait Implementations

impl Send for RawWakerVTable

impl Sync for RawWakerVTable

Blanket Implementations

impl<T, U> Into for T where
    U: From<T>, 
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impl<T> From for T[src]

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T, U> TryFrom for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
[src]

impl<T> BorrowMut for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]