Struct AccessCell 

pub struct AccessCell<T> { /* private fields */ }

A cell holding a value of type T with re-entrant mutable access.

The first caller of access runs immediately; any further calls to access from within that closure (or its queue) are enqueued and executed in order after the current work completes.

Thread-safe: safe to share across threads and use from multiple threads.

Implementations

impl<T> AccessCell<T>

pub fn new(value: T) -> Self

Creates a new AccessCell wrapping value.

pub fn access(&self, f: impl FnOnce(&mut T) + Send + 'static)

Runs f with exclusive mutable access to the inner value.

If called while another access closure is running (re-entrant or from another thread), f is queued and run after the current closure and any other queued closures finish.

The closure must be Send so it can be moved into the queue when called from another thread.

pub fn access_ref(&self) -> RwLockReadGuard<'_, T>

Returns an immutable reference to the inner value.

Blocks if an access closure is currently running. Safe to call from any thread.

Trait Implementations

impl<T: Send> Send for AccessCell<T>

impl<T: Send> Sync for AccessCell<T>