Struct task::WeakTaskRef

pub struct WeakTaskRef(/* private fields */);

A weak reference to a shared Task reference (TaskRef).

WeakTaskRef and TaskRef behave analogously to Weak and Arc; see the documentation of Weak for more detail.

This is created via TaskRef::downgrade().

Implementations

impl WeakTaskRef

pub fn upgrade(&self) -> Option<TaskRef>

Attempts to upgrade this WeakTaskRef to a TaskRef; see Weak::upgrade().

Returns None if the TaskRef has already been dropped, meaning that the Task itself no longer exists has been exited, cleaned up, and fully dropped.

Trait Implementations

impl Clone for WeakTaskRef

fn clone(&self) -> WeakTaskRef

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WeakTaskRef

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

Formats the value using the given formatter.