Struct CancelToken 

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

Implementations

impl CancelToken

pub fn is_cancelled(&self) -> bool

pub fn standalone() -> (Self, CancelHandle)

A token plus the handle that cancels it, for owners running their own scheduling loop rather than the engine’s worker pool (0058 WK04: the worker session cancels admitted requests by protocol cancel and lease teardown, not pool bookkeeping). Dropping the handle without cancelling still cancels (OwnerClosed), matching the pool’s abandon semantics.

pub fn register_cancel_resource( &self, resource: impl FnOnce() -> Result<(), Failure> + Send + 'static, ) -> Result<(), Failure>

Install the single optional resource hook before acquiring native resources. A late installation executes immediately and returns its failure to the installer. Hooks must be prompt: they must not join or wait for workers. A resource published after cancellation must also be revoked by its owner.

pub fn clear_cancel_resource(&self)

Call only after normal resource cleanup. An already detached callback may still run; the resource itself must serialize revocation and reuse.

Trait Implementations

impl Clone for CancelToken

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.