Enum CancelCode 

pub enum CancelCode {
    User,
    Timeout,
    ParentDropped,
    SystemShutdown,
    Internal,
}

Categorized cause of a cancellation.

This is a closed enum — #[non_exhaustive] is intentionally absent so that exhaustive match is enforced on consumers (design-v1.md §2).

No forceful kill variants (e.g., Aborted, Killed, ForcedExit) are included; all cancellation in this design is cooperative (crux: Cooperative cancellation 4-checkpoint).

Variants

User

Requested explicitly by a human or calling client.

Timeout

A deadline or time budget was exceeded.

ParentDropped

The parent context (e.g., the service instance) was dropped.

SystemShutdown

The process is shutting down gracefully.

Internal

Internal engine policy triggered cancellation.

Trait Implementations

impl Clone for CancelCode

fn clone(&self) -> CancelCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CancelCode

impl Debug for CancelCode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CancelCode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for CancelCode

impl PartialEq for CancelCode

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CancelCode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CancelCode