Struct ThreadToken

pub struct ThreadToken<T: 'static>(/* private fields */);

Holds a value inside a thread-local storage.

Then, this token can be used to access the underlying value as long you are in the same thread that created it.

This is useful on the web, where you are always in the same thread, but you need to pass some kind of non-Send value across Send boundries of Makepad.

Warning: Trying to read the value from a different thread will panic.

Warning: This token is reference counted so you can have copies of it, but the last copy must be dropped in the same thread that created it to avoid leaks. If this value is dropped in a different thread, it will panic.

Implementations

impl<T> ThreadToken<T>

pub fn new(value: T) -> Self

Put the given value in thread-local storage and return a token to access it.

pub fn peek<R>(&self, f: impl FnOnce(&T) -> R) -> R

Immutable access to the value associated with this token.

pub fn peek_mut<R>(&self, f: impl FnOnce(&mut T) -> R) -> R

Mutable access to the value associated with this token.

impl<T: Clone> ThreadToken<T>

pub fn clone_inner(&self) -> T

Clone the associated value of this token and return it.

Trait Implementations

impl<T> Clone for ThreadToken<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for ThreadToken<T>

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

Formats the value using the given formatter.