Struct NestedReadonlySnapshot 

pub struct NestedReadonlySnapshot { /* private fields */ }

A nested read-only snapshot.

This is a read-only snapshot that has a parent snapshot. It inherits the parent’s invalid set and can be disposed independently.

Thread Safety

Contains Cell<T> and RefCell<T> which are not Send/Sync. This is safe because snapshots are stored in thread-local storage and never shared across threads. The Arc is used for cheap cloning within a single thread, not for cross-thread sharing.

Implementations

impl NestedReadonlySnapshot

pub fn new( id: SnapshotId, invalid: SnapshotIdSet, read_observer: Option<ReadObserver>, parent: Weak<NestedReadonlySnapshot>, ) -> Arc<Self>

pub fn snapshot_id(&self) -> SnapshotId

pub fn invalid(&self) -> SnapshotIdSet

pub fn read_only(&self) -> bool

pub fn root_nested_readonly(&self) -> Arc<NestedReadonlySnapshot>

pub fn enter<T>(self: &Arc<Self>, f: impl FnOnce() -> T) -> T

pub fn take_nested_snapshot( &self, read_observer: Option<ReadObserver>, ) -> Arc<NestedReadonlySnapshot>

pub fn has_pending_changes(&self) -> bool

pub fn dispose(&self)

pub fn record_read(&self, state: &dyn StateObject)

pub fn record_write(&self, _state: Arc<dyn StateObject>)

pub fn close(&self)

pub fn is_disposed(&self) -> bool