Skip to main content

Semaphore

tg_sync

Struct Semaphore 

Source 
pub struct Semaphore {
    pub inner: UPIntrFreeCell<SemaphoreInner>,
}
Expand description

Semaphore

Fields§

§inner: UPIntrFreeCell<SemaphoreInner>

UPIntrFreeCell

Implementations§

Source§

impl Semaphore

Source

pub fn new(res_count: usize) -> Self

创建一个新的信号量，初始资源计数为 res_count。

Source

pub fn up(&self) -> Option<ThreadId>

当前线程释放信号量表示的一个资源，并唤醒一个阻塞的线程

Source

pub fn down(&self, tid: ThreadId) -> bool

当前线程试图获取信号量表示的资源，并返回结果

Auto Trait Implementations§

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 = Infallible

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

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

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.