Struct ShardState 

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

Typed shard state handle.

This is a lightweight Copy handle backed by shard-managed storage. The actual value is hosted in a global slot table and validated via generation to prevent ABA stale access.

Implementations

impl<T> ShardState<T>

where T: Send + Sync + 'static,

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

Execute a closure with a shared reference to the value.

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

Execute a closure with a mutable reference to the value.

pub fn get(&self) -> T

where T: Clone,

Get a cloned value. Requires T: Clone.

pub fn set(&self, value: T)

Replace the stored value.

Trait Implementations

impl<T> Clone for ShardState<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> Hash for ShardState<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T> PartialEq for ShardState<T>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> Copy for ShardState<T>

impl<T> Eq for ShardState<T>