Enum CapacityMorphError 

pub enum CapacityMorphError {
    InvalidCapacity,
    CannotShrinkInFlight {
        in_flight: usize,
        new_capacity: usize,
    },
    Ring(RingError),
    Adaptive(AdaptiveError),
}

Errors returned by capacity-morph operations.

Variants

InvalidCapacity

Target capacity is not a power of two, or is less than 2.

CannotShrinkInFlight

Never returned. Shrinks always succeed: in-flight items stay physically in the old AdaptiveRing as part of the stale list and the consumer drains them through try_recv’s stale-walk, so there is nothing for a shrink to refuse. The variant is part of the public enum and kept so matches stay exhaustive.

Fields

in_flight: usize

new_capacity: usize

Ring(RingError)

Underlying ring allocation, push, or pop failed during the morph. The active backing is unchanged.

Adaptive(AdaptiveError)

Producer / consumer registration on the new backing failed (e.g. mirroring more peers than the configured max_producers / max_consumers).

Trait Implementations

impl Debug for CapacityMorphError

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

Formats the value using the given formatter.

impl Display for CapacityMorphError

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

Formats the value using the given formatter.

impl Error for CapacityMorphError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<AdaptiveError> for CapacityMorphError

fn from(e: AdaptiveError) -> Self

Converts to this type from the input type.

impl From<RingError> for CapacityMorphError

fn from(e: RingError) -> Self

Converts to this type from the input type.