Struct tokio_sync::semaphore::Semaphore

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pub struct Semaphore { /* private fields */ }

Expand description

Futures-aware semaphore.

Implementations

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impl Semaphore

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pub fn new(permits: usize) -> Semaphore

Creates a new semaphore with the initial number of permits

Panics

Panics if permits is zero.

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pub fn available_permits(&self) -> usize

Returns the current number of available permits

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pub fn close(&self)

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

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pub fn add_permits(&self, n: usize)

Add n new permits to the semaphore.

Trait Implementations

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impl Debug for Semaphore

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

Formats the value using the given formatter. Read more

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impl Send for Semaphore

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impl Sync for Semaphore

Auto Trait Implementations

impl !RefUnwindSafe for Semaphore

impl Unpin for Semaphore

impl !UnwindSafe for Semaphore

Blanket Implementations

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

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pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct tokio_sync::semaphore::Semaphore

Implementations

impl Semaphore

pub fn new(permits: usize) -> Semaphore

Panics

pub fn available_permits(&self) -> usize

pub fn close(&self)

pub fn add_permits(&self, n: usize)

Trait Implementations

impl Debug for Semaphore

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

impl Send for Semaphore

impl Sync for Semaphore

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,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Error = Infallible

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

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

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

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

Struct tokio_sync::semaphore::Semaphore

Implementations

impl Semaphore

pub fn new(permits: usize) -> Semaphore

Panics

pub fn available_permits(&self) -> usize

pub fn close(&self)

pub fn add_permits(&self, n: usize)

Trait Implementations

impl Debug for Semaphore

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

impl Send for Semaphore

impl Sync for Semaphore

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,

pub fn type_id(&self) -> TypeId

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

pub fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

pub fn from(t: T) -> T

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

pub fn into(self) -> U

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

type Error = Infallible

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

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

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

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

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

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

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

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

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

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