Struct CancelToken 

pub struct CancelToken { /* private fields */ }

Shared cancellation flag for tool execution.

A thin wrapper around Arc<AtomicBool>. Tools (bash, long-running shells) poll [is_cancelled] at short intervals and abort when it becomes true; the server flips the flag on Ctrl-C / cancel RPC.

Tools that complete in microseconds (read, write, edit) are free to ignore the token entirely, or check it once at the top to return a cancelled error if the user cancelled before execution began.

Clones share the same underlying atomic.

Implementations

impl CancelToken

pub fn new() -> Self

Create a new, un-cancelled token.

pub fn from_flag(flag: Arc<AtomicBool>) -> Self

Wrap an existing shared flag. Useful when the server already owns an Arc<AtomicBool> (per-session cancel flag) and wants to expose it to tool-execution paths without re-wrapping.

pub fn flag(&self) -> Arc<AtomicBool>

Return the underlying shared flag (same Arc).

pub fn is_cancelled(&self) -> bool

True if the token has been cancelled.

pub fn cancel(&self)

Set the cancel flag. Idempotent.

Trait Implementations

impl Clone for CancelToken

fn clone(&self) -> CancelToken

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CancelToken

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

Formats the value using the given formatter.

impl Default for CancelToken

fn default() -> CancelToken

Returns the “default value” for a type.