Enum tokio::sync::TryAcquireError

pub enum TryAcquireError {
    Closed,
    NoPermits,
}

Error returned from the Semaphore::try_acquire function.

Variants

Closed

The semaphore has been closed and cannot issue new permits.

NoPermits

The semaphore has no available permits.

Implementations

impl TryAcquireError

pub(crate) fn is_closed(&self) -> bool

Returns true if the error was caused by a closed semaphore.

pub(crate) fn is_no_permits(&self) -> bool

Returns true if the error was caused by calling try_acquire on a semaphore with no available permits.

Trait Implementations

impl Debug for TryAcquireError

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

Formats the value using the given formatter.

impl Display for TryAcquireError

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

Formats the value using the given formatter.

impl Error for TryAcquireError

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

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 TryAcquireError

fn eq(&self, other: &TryAcquireError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for TryAcquireError

impl StructuralPartialEq for TryAcquireError