Struct ShimTlsVar

pub struct ShimTlsVar<'tls, T, F = fn() -> T>
where
    F: Fn() -> T,
{ /* private fields */ }

Thread local storage for a variable of type T, initialized on first access by each thread using a function of type F.

The Drop implementation of T is not called, e.g. when threads exit or this value itself is dropped.

Implementations

impl<'tls, T, F> ShimTlsVar<'tls, T, F>

where F: Fn() -> T,

pub const fn new(tls: &'tls ThreadLocalStorage, f: F) -> Self

Create a variable that will be uniquely instantiated for each thread, initialized with f on first access by each thread.

Typically this should go in a static.

pub fn get<'var>(&'var self) -> TlsVarRef<'tls, 'var, T, F>

Access the inner value.

The returned wrapper can’t be sent to or shared with other threads, since the underlying storage is invalidated when the originating thread calls ThreadLocalStorage::unregister_current_thread.

Trait Implementations

impl<T, F> Sync for ShimTlsVar<'_, T, F>

where F: Sync + Fn() -> T,