Struct ShardRegistry 

pub struct ShardRegistry { /* private fields */ }

Implementations

impl ShardRegistry

pub fn get() -> &'static Self

Get the singleton instance of the shard registry.

Should only be called by macro, not manually.

pub unsafe fn init_or_get<T, F, R>(&self, id: &str, f: F) -> R

where T: ShardState + Default + 'static, F: FnOnce(Arc<T>) -> R,

Get or initialize and get a shard state, and provide it to the closure f as Arc<T>. The state type must implement ShardState.

This function should never be called manually; it should be automatically generated by the #[shard] macro.

Safety

This function is unsafe because it uses an evil method to cast Arc<dyn ShardState> to Arc<T>.