Enum async_weighted_semaphore::TryAcquireError

pub enum TryAcquireError {
    WouldBlock,
    Poisoned,
}

An error returned from Semaphore::try_acquire and Semaphore::try_acquire_arc. See Semaphore::try_acquire_arc for an example usage.

Variants

WouldBlock

Semaphore::try_acquire failed because Semaphore::acquire would have blocked. Either there are insufficient available permits or there is another pending call to acquire.

Poisoned

Semaphore::try_acquire failed because the Semaphore is poisoned.

Trait Implementations

impl Clone for TryAcquireError

fn clone(&self) -> TryAcquireError

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TryAcquireError

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

Formats the value using the given formatter.

impl Eq for TryAcquireError

impl Error for TryAcquireError

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

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

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

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

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

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<PoisonError> for TryAcquireError

fn from(_: PoisonError) -> Self

Performs the conversion.

impl Hash for TryAcquireError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for TryAcquireError

fn cmp(&self, other: &TryAcquireError) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<TryAcquireError> for TryAcquireError

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

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

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl PartialOrd<TryAcquireError> for TryAcquireError

fn partial_cmp(&self, other: &TryAcquireError) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for TryAcquireError

impl StructuralPartialEq for TryAcquireError