Struct CancelCheck 

pub struct CancelCheck { /* private fields */ }

A per-loop cancellation poller with a local iteration counter. Call CancelCheck::tick once per loop iteration; it performs the real check once per 4096 iterations, so the amortized per-iteration cost is a register increment and a mask test. Public statement entry points perform the initial immediate check.

Implementations

impl CancelCheck

pub fn new() -> Self

pub fn tick(&mut self) -> Result<(), QueryError>

Advance the counter; every 4096th call runs the real cancellation check and propagates its typed error.

Trait Implementations

impl Debug for CancelCheck

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

Formats the value using the given formatter.

impl Default for CancelCheck

fn default() -> Self

Returns the “default value” for a type.