Trait Semaphore 

pub trait Semaphore: Default {
    type Instant: Instant;

    // Required methods
    fn give(&self);
    fn try_take(&self) -> bool;
    fn take(&self, timeout: Option<Duration>) -> bool;

    // Provided method
    fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<'_, Self>  { ... }
}

Binary semaphore.

Required Associated Types

type Instant: Instant

Required Methods

fn give(&self)

Increment semaphore.

Does nothing if already given.

fn try_take(&self) -> bool

Try decrement semaphore.

Returns previous value.

Does nothing if already taken.

fn take(&self, timeout: Option<Duration>) -> bool

Wait for semaphore to be given and take it.

Returns:

• on success - true,
• on timeout - false.

Provided Methods

fn take_iter(&self, timeout: Option<Duration>) -> TakeIter<'_, Self>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl Semaphore for StdSemaphore

Available on crate feature std only.

type Instant = Instant