Enum Error 

#[non_exhaustive]
pub enum Error {
    AlreadyInstalled,
    SignalRegistration {
        signal: Signal,
        source: Error,
    },
    InvalidState(&'static str),
    Timeout(&'static str),
    NoRuntime,
}

Errors produced by mod-signal operations.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

AlreadyInstalled

Coordinator::install was called twice on the same coordinator. Signal handler installation is idempotent within a coordinator and the second call is rejected.

SignalRegistration

The platform rejected registration of a specific signal.

Fields

signal: Signal

Which signal failed to register.

source: Error

The underlying OS error.

InvalidState(&'static str)

The coordinator was used in a state that disallows the requested operation. Carries a static description.

Timeout(&'static str)

A timed operation exceeded its budget. Carries a static description of which operation.

NoRuntime

Coordinator::install was called with no async-runtime feature and no ctrlc-fallback feature enabled, so there is no back-end available to attach signal handlers.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.