Struct Sem

pub struct Sem { /* private fields */ }

POSIX implementation of Semaphore

Note: wait_timeout returns false on interrupt by signal

Trait Implementations

impl Drop for Sem

fn drop(&mut self)

Executes the destructor for this type.

impl Semaphore for Sem

fn new(init: u32) -> Option<Self>

Creates new instance, returning None on inability to do so.

fn wait(&self)

Decrements self, returning immediately if it was signaled.

fn try_wait(&self) -> bool

Attempts to decrement self, returning whether self was signaled or not.

fn wait_timeout(&self, timeout: Duration) -> bool

Attempts to decrement self within provided time, returning whether self was signaled or not.

fn signal(&self)

Increments self, waking any awaiting thread as result

fn post(&self) -> bool

Increments self, returning whether another thread has been woken as result.

fn lock(&self) -> SemaphoreGuard<'_, Self>

Gets semaphore’s guard, which signal on drop.

fn try_lock(&self) -> Option<SemaphoreGuard<'_, Self>>

Attempts to acquire semaphore’s guard, which signal on drop.

impl Send for Sem

impl Sync for Sem