Struct BeatError 

pub struct BeatError {
    pub errno: i32,
    pub kind: ErrorKind,
}

Payload of BeatOutcome::Failed.

Copy by construction: allocating a BeatError is structurally impossible, so the Varta::beat slow path is allocation-free regardless of how the underlying io::Error was represented. Callers wanting a full io::Error can call Self::to_io_error.

Fields

errno: i32

Raw OS errno when the failure came from a syscall; BeatError::UNKNOWN_ERRNO (0) when not OS-derived. POSIX guarantees errno is never 0 on a real syscall failure.

kind: ErrorKind

The libstd io::ErrorKind classification. Always populated.

Implementations

impl BeatError

pub const UNKNOWN_ERRNO: i32 = 0

Sentinel value used when no OS error number is available.

pub fn from_io(e: &Error) -> Self

Capture the failure shape from an io::Error without cloning or allocating.

pub fn to_io_error(self) -> Error

Reconstruct an io::Error. Allocation-free when errno != 0 (uses Repr::Os); falls back to Repr::Simple(kind) otherwise.

Trait Implementations

impl Clone for BeatError

fn clone(&self) -> BeatError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BeatError

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

Formats the value using the given formatter.

impl Display for BeatError

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

Formats the value using the given formatter.

impl Error for BeatError

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 PartialEq for BeatError

fn eq(&self, other: &BeatError) -> 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 Copy for BeatError

impl Eq for BeatError

impl StructuralPartialEq for BeatError