Skip to main content

Sem

plat

Struct Sem 

Source 
pub struct Sem(/* private fields */);
Expand description

a counting semaphore

Implementations§

Source§

impl Sem

Source

pub fn new(initial: u32) -> Option<Sem>

Source

pub fn post(&self, n: u32)

add n units, wake sleepers (0: nothing)

Source

pub fn wait(&self, ms: i32) -> bool

take one unit: true taken, false timeout (ms -1 = forever, 0 = only try)

Auto Trait Implementations§

§

impl Forget for Sem

§

impl Freeze for Sem

§

impl RefUnwindSafe for Sem

§

impl Send for Sem

§

impl Sync for Sem

§

impl Unpin for Sem

§

impl UnsafeUnpin for Sem

§

impl UnwindSafe for Sem

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

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

Source§

type Error = !

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, !>

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.