Enum calloop::error::Error

pub enum Error {
    InvalidToken,
    IoError(Error),
    OtherError(Box<dyn Error + Sync + Send>),
}

The primary error type used by Calloop covering internal errors and I/O errors that arise during loop operations such as source registration or event dispatching.

Variants

InvalidToken

When an event source is registered (or re- or un-registered) with the event loop, this error variant will occur if the token Calloop uses to keep track of the event source is not valid.

IoError(Error)

This variant wraps a std::io::Error, which might arise from Calloop’s internal operations.

OtherError(Box<dyn Error + Sync + Send>)

Any other unexpected error kind (most likely from a user implementation of EventSource::process_events()) will be wrapped in this.

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

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

impl From<Box<dyn Error + Sync + Send + 'static, Global>> for Error

fn from(source: Box<dyn Error + Sync + Send>) -> Self

Converts to this type from the input type.

impl From<Errno> for Error

fn from(err: Errno) -> Self

Converts a nix::Error into a wrapped version of the equivalent std::io::Error.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(err: Error) -> Self

Converts Calloop’s error type into a std::io::Error.

impl<T> From<InsertError<T>> for Error

fn from(e: InsertError<T>) -> Error

Converts the InsertError into Calloop’s error type, throwing away the contained source.