Struct SubgraphRegistry 

pub struct SubgraphRegistry { /* private fields */ }

Union-find registry tracking each node’s connected-component membership. Wrapped by crate::Core in Arc<Mutex<...>> so the wave engine can resolve a node’s partition before acquiring that partition’s wave_owner.

Implementations

impl SubgraphRegistry

pub fn node_count(&self) -> usize

Number of registered nodes. Useful for debugging + acceptance tests that verify the registry stays in sync with Core::nodes.

pub fn component_count(&self) -> usize

Number of distinct connected components. Two threads emitting into nodes with distinct partitions can run truly parallel (Y1+); X5 substrate does not yet exercise that property.

pub fn partition_of(&mut self, node: NodeId) -> Option<SubgraphId>

Resolve node’s partition. Returns None for unregistered nodes. Mutating because path compression may relink under find.