Struct InMemoryMultibufferRegistry 

pub struct InMemoryMultibufferRegistry { /* private fields */ }

Default in-memory MultibufferRegistry implementation. One RwLock<HashMap> indexed by view BufferId. Lookups take the read lock (no contention with parallel readers); insert / remove take the write lock (rare paths — view creation + view close).

Implementations

impl InMemoryMultibufferRegistry

pub fn new() -> Self

pub fn handle() -> MultibufferRegistryHandle

Construct the registry as a service handle (cheap-clone Arc’d trait object) ready for ServiceRegistry::register.

Trait Implementations

impl Debug for InMemoryMultibufferRegistry

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

Formats the value using the given formatter.

impl Default for InMemoryMultibufferRegistry

fn default() -> InMemoryMultibufferRegistry

Returns the “default value” for a type.

impl MultibufferRegistry for InMemoryMultibufferRegistry

fn handle(&self, view: BufferId) -> Option<Arc<MultibufferDocumentHandle>>

Return the typed handle for view if registered, else None. Cheap-clone: Arc::clone.

fn insert(&self, view: BufferId, handle: Arc<MultibufferDocumentHandle>)

Register handle against view. Called by create_multibuffer_view after the handle is built. Overwrites if the view id already had a handle (last-write- wins; production code allocates fresh ids per view so a collision is a developer bug, not a hot-swap).

fn remove(&self, view: BufferId)

Remove the entry for view. Idempotent: removing a non-existent entry is a no-op.

fn remove_by_document_id(&self, document_id: DocumentId) -> bool

Remove the entry whose handle reports document_id as its MultibufferDocumentHandle::document_id. Called by the DocumentClosed subscriber (the event payload carries DocumentId, not BufferId). Returns true if an entry was removed. O(n) over active views; multibuffer counts are small so the walk is fine.

fn len(&self) -> usize

Count of currently-registered views. Test-friendly probe.

fn view_ids(&self) -> Vec<BufferId>

OA.23b: every registered view id.