Struct QuerySignal 

pub struct QuerySignal { /* private fields */ }

Available on crate feature core only.

A cooperative cancellation signal for in-flight query requests.

Clones share the same underlying flag, so cancelling any clone cancels all of them.

Implementations

impl QuerySignal

pub fn new() -> Self

Create a new, non-cancelled signal.

pub fn cancel(&self)

Signal cancellation. All clones sharing this flag will observe is_cancelled() == true after this call.

pub fn is_cancelled(&self) -> bool

Check whether cancellation has been signalled.

Trait Implementations

impl Clone for QuerySignal

fn clone(&self) -> QuerySignal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuerySignal

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

Formats the value using the given formatter.

impl Default for QuerySignal

fn default() -> Self

Returns the “default value” for a type.

impl Eq for QuerySignal

impl PartialEq for QuerySignal

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.