Struct tokio::executor::SpawnError

pub struct SpawnError { /* fields omitted */ }

Errors returned by Executor::spawn.

Spawn errors should represent relatively rare scenarios. Currently, the two scenarios represented by SpawnError are:

• An executor being at capacity or full. As such, the executor is not able to accept a new future. This error state is expected to be transient.
• An executor has been shutdown and can no longer accept new futures. This error state is expected to be permanent.

Methods

impl SpawnError

pub fn shutdown() -> SpawnError

Return a new SpawnError reflecting a shutdown executor failure.

pub fn at_capacity() -> SpawnError

Return a new SpawnError reflecting an executor at capacity failure.

pub fn is_shutdown(&self) -> bool

Returns true if the error reflects a shutdown executor failure.

pub fn is_at_capacity(&self) -> bool

Returns true if the error reflects an executor at capacity failure.

Trait Implementations

impl Debug for SpawnError

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

Formats the value using the given formatter.

impl Display for SpawnError

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

Formats the value using the given formatter.

impl Error for SpawnError

fn description(&self) -> &str

Deprecated since 1.42.0:

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

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting