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Id

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结构体 Id 

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pub struct Id(/* private fields */);
展开描述

一个不透明的 ID,相对于所有其他当前 running runtimes.

§Notes

  • Runtime ID 相对于其他当前正在运行的运行时是唯一的。当一个运行时结束后,同一 ID 可被另一个运行时复用。
  • Runtime ID 不是连续的,也不表示运行时启动的顺序或任何其他数据。
  • The runtime ID of the currently running task can be obtained from the Handle.

§示例

use tokio::runtime::Handle;

#[tokio::main(flavor = "multi_thread", worker_threads = 4)]
async fn main() {
  println!("Current runtime id: {}", Handle::current().id());
}

Trait 实现§

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impl Clone for Id

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fn clone(&self) -> Id

返回值的副本。 更多信息
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. 更多信息
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impl Debug for Id

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

使用给定的格式化器格式化此值。 更多信息
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impl Display for Id

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

使用给定的格式化器格式化此值。 更多信息
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impl Hash for Id

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. 更多信息
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. 更多信息
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impl PartialEq for Id

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fn eq(&self, other: &Id) -> bool

测试 selfother 值是否相等,供 == 运算符使用。
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fn ne(&self, other: &Rhs) -> bool

测试 != 运算符。默认实现几乎总是够用,除非有非常充分的理由,否则不应被覆盖。
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impl Copy for Id

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impl Eq for Id

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impl StructuralPartialEq for Id

自动 Trait 实现§

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impl Freeze for Id

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impl RefUnwindSafe for Id

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impl Send for Id

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impl Sync for Id

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impl Unpin for Id

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impl UnsafeUnpin for Id

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impl UnwindSafe for Id

Blanket 实现§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. 更多信息
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. 更多信息
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. 更多信息
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 更多信息
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impl<T> From<T> for T

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fn from(t: T) -> T

原样返回传入的参数。

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

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fn into(self) -> U

调用 U::from(self)

也就是说,此转换的具体行为取决于 From<T> for U 的实现方式。

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

获得所有权后的类型。
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. 更多信息
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 更多信息
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. 更多信息
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

转换出错时返回的类型。
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

执行转换。
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

转换出错时返回的类型。
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

执行转换。