Struct Completer 

pub struct Completer<T> { /* private fields */ }

The producing end of a Pending. Dropping it without completing abandons the answer, which the receiving end observes.

Implementations

impl<T> Completer<T>

pub fn is_abandoned(&self) -> bool

Whether nobody is waiting any more: the Pending was dropped — or, through Pending::map, the mapped answer was — so the work behind this answer may be skipped.

pub fn abandoned(&self) -> Abandoned<'_, T>

Resolves once nobody can observe the answer any more — what Self::is_abandoned reports, as a future, so work behind the answer can stop the moment its asker goes away instead of checking on a timer. Runtime-agnostic: dropping the Pending (or, through Pending::map, the mapped answer) wakes it. An answer handed to a plain Pending::then continuation is always wanted, so this never resolves for it.

pub fn complete(self, value: T)

Deliver the answer. A continuation attached with Pending::then runs here, on the completing thread.

Trait Implementations

impl<T> Drop for Completer<T>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.