Struct tokio_sync::semaphore::Semaphore[−][src]

pub struct Semaphore { /* fields omitted */ }
[−]

Futures-aware semaphore.

Implementations

impl Semaphore[src][−]

pub fn new(permits: usize) -> Semaphore[src][−]

Creates a new semaphore with the initial number of permits

Panics

Panics if permits is zero.

pub fn available_permits(&self) -> usize[src][−]

Returns the current number of available permits

pub fn close(&self)[src][−]

Close the semaphore. This prevents the semaphore from issuing new permits and notifies all pending waiters.

pub fn add_permits(&self, n: usize)[src][−]

Add n new permits to the semaphore.

Trait Implementations

impl Debug for Semaphore[src][+]

impl Send for Semaphore[src]

impl Sync for Semaphore[src]

Auto Trait Implementations

impl !RefUnwindSafe for Semaphore

impl Unpin for Semaphore

impl !UnwindSafe for Semaphore

Blanket Implementations

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

impl<T> Borrow<T> for T where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<T> From<T> for T[src][+]

impl<T, U> Into<U> for T where
    U: From<T>, [src][+]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src][+]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src][+]

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

The type returned in the event of a conversion error.