Struct blocking_permit::Canceled

pub struct Canceled;

Error type returned as output from the BlockingPermitFuture or Dispatched futures if they are canceled.

This only occurs if the associated Semaphore is closed or DispatchPool is dropped, respectively.

Trait Implementations

impl Debug for Canceled

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

Formats the value using the given formatter.

impl Display for Canceled

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

Formats the value using the given formatter.

impl Error for Canceled

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 1.41.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

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

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<Canceled> for Error

fn from(me: Canceled) -> Error

Performs the conversion.