Struct std::thread::local_impl::Key

pub struct Key<T> {
    os: OsStaticKey,
    marker: PhantomData<Cell<T>>,
}

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

Use a regular global static to store this key; the state provided will then be thread-local.

Fields

os: OsStaticKey

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

marker: PhantomData<Cell<T>>

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

Implementations

impl<T: 'static> Key<T>

pub fn new() -> Key<T>

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

pub unsafe fn get(&'static self, init: impl FnOnce() -> T) -> Option<&'static T>

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

It is a requirement for the caller to ensure that no mutable reference is active when this method is called.

unsafe fn try_initialize( &'static self, init: impl FnOnce() -> T ) -> Option<&'static T>

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

Trait Implementations

impl<T> Debug for Key<T>

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

Formats the value using the given formatter.

impl<T> Sync for Key<T>