Struct Semaphore

pub struct Semaphore { /* private fields */ }

Implementations

impl Semaphore

Basic semaphore implementation

Examples

Create a semaphore with initial value 1, that is taken and then released.

let sem = Semaphore::new(1);
sem.wait();
assert_eq!(0, sem.get_current_value());
sem.release();

pub fn new(initial_value: u32) -> Self

Instanties a semaphore with a given initial value

pub fn wait(&self)

Acquires the semaphore or waits in order to do so until another consumer releases the resource.

pub fn release(&self)

Releases once the semaphore

pub fn get_current_value(&self) -> u32

Get the current value of the semaphore.

The semaphore starts with an initial value, that is decremented until zero every time a wait() call is completed. On the other hand, the semaphore value increments every time a release() call is completed.