std::sys::thread_local::key::racy

Struct LazyKey

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pub struct LazyKey {
    key: Atomic<usize>,
    dtor: Option<unsafe extern "C" fn(*mut u8)>,
}
🔬This is a nightly-only experimental API. (thread_local_internals)
Expand description

A type for TLS keys that are statically allocated.

This is basically a LazyLock<Key>, but avoids blocking and circular dependencies with the rest of std.

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§key: Atomic<usize>
🔬This is a nightly-only experimental API. (thread_local_internals)

Inner static TLS key (internals).

§dtor: Option<unsafe extern "C" fn(*mut u8)>
🔬This is a nightly-only experimental API. (thread_local_internals)

Destructor for the TLS value.

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impl LazyKey

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pub const fn new(dtor: Option<unsafe extern "C" fn(*mut u8)>) -> LazyKey

🔬This is a nightly-only experimental API. (thread_local_internals)
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pub fn force(&self) -> pthread_key_t

🔬This is a nightly-only experimental API. (thread_local_internals)
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fn lazy_init(&self) -> usize

🔬This is a nightly-only experimental API. (thread_local_internals)

Auto Trait Implementations§

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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. Read more
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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. Read more
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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. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> SizedTypeProperties for T

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#[doc(hidden)] const IS_ZST: bool = _

🔬This is a nightly-only experimental API. (sized_type_properties)
true if this type requires no storage. false if its size is greater than zero. Read more
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#[doc(hidden)] const LAYOUT: Layout = _

🔬This is a nightly-only experimental API. (sized_type_properties)
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#[doc(hidden)] const MAX_SLICE_LEN: usize = _

🔬This is a nightly-only experimental API. (sized_type_properties)
The largest safe length for a [Self]. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.