Struct PrioritySemaphore

Source
pub struct PrioritySemaphore { /* private fields */ }
Expand description

Async-aware priority semaphore.

Implementations§

Source§

impl PrioritySemaphore

Source

pub const fn new(permits: usize) -> Self

Create new semaphore with given maximum concurrent permits.

Source

pub fn acquire(self: &Arc<Self>, prio: Priority) -> AcquireFuture

Async acquire (cancellation-safe).

Source

pub fn try_acquire( self: &Arc<Self>, _prio: Priority, ) -> Result<Permit, TryAcquireError>

Try immediate acquire.

Source

pub fn close(&self)

Close the semaphore: further acquires fail.

Source

pub fn available_permits(&self) -> usize

Number of currently available permits.

Source

pub fn queued(&self) -> usize

Number of tasks waiting in the queue.

Trait Implementations§

Source§

impl Debug for PrioritySemaphore

Source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.