Struct AttemptCancellation 

pub struct AttemptCancellation { /* private fields */ }

The attempt’s cooperative cancellation signal and optional deadline.

All clones, and the ExecutionCancellation that native execution receives through execution_cancellation, share one token. cancel is irreversible: it stops the next native boundary from starting work and leaves already submitted GPU work to settle, preserving cleanup and terminal report completion.

Implementations

impl AttemptCancellation

pub fn cancel(&self)

Requests cooperative cancellation; cleanup still completes.

pub fn is_cancelled(&self) -> bool

Returns whether caller cancellation was requested or the deadline expired. Use Self::check to distinguish the reasons.

pub fn deadline(&self) -> Option<Instant>

Returns the absolute deadline in the process monotonic clock domain. None means that the attempt has no deadline.

pub fn is_expired(&self) -> bool

Returns whether the optional absolute deadline has expired.

pub fn execution_cancellation(&self) -> ExecutionCancellation

The same token for the native engine’s boundary checks; cancelling either side cancels both.

pub fn check(&self, operation: &'static str) -> Result<()>

Cooperative cancellation check at adapter-owned boundaries (planning, pre-execution, and result drain). Caller cancellation wins first; an expired deadline reports the distinct deadline_expired reason.

Trait Implementations

impl Clone for AttemptCancellation

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttemptCancellation

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

Formats the value using the given formatter.