Struct InsufficientPermitsError 

pub struct InsufficientPermitsError { /* private fields */ }

Error returned when we lack sufficient permits to perform an operation.

• With the semaphore-total flag: Semaphore lacks sufficient permits when using acquire_within_total

• When more permits were requested via SemaphorePermit::split.than the permit contains.

Contains the requested count of permits via requested and optionally the total available when the request failed via total.

Note that total may be None if the requester was evicted after being queued due to insufficient capacity (at which point, we don’t know what the total permits for the queue was)

Implementations

impl InsufficientPermitsError

pub fn total(&self) -> Option<usize>

The total amount of permits which were available when the waiter was rejected (or None if we don’t know)

pub fn requested(&self) -> usize

The amount of permits requested

Trait Implementations

impl Clone for InsufficientPermitsError

fn clone(&self) -> InsufficientPermitsError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InsufficientPermitsError

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

Formats the value using the given formatter.

impl Display for InsufficientPermitsError

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

Formats the value using the given formatter.

impl Error for InsufficientPermitsError

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

Returns 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 InsufficientPermitsError

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for InsufficientPermitsError

impl Eq for InsufficientPermitsError

impl StructuralPartialEq for InsufficientPermitsError