Struct tokio::util::once_cell::OnceCell

pub(crate) struct OnceCell<T> {
    once: Once,
    value: UnsafeCell<MaybeUninit<T>>,
}

Fields

once: Once

value: UnsafeCell<MaybeUninit<T>>

Implementations

impl<T> OnceCell<T>

pub(crate) const fn new() -> Self

pub(crate) fn get(&self, init: impl FnOnce() -> T) -> &T

Get the value inside this cell, initializing it using the provided function if necessary.

If the init closure panics, then the OnceCell is poisoned and all future calls to get will panic.

fn do_init(&self, init: impl FnOnce() -> T)

Trait Implementations

impl<T> Drop for OnceCell<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: Send + Sync> Send for OnceCell<T>

impl<T: Send + Sync> Sync for OnceCell<T>