Struct NestedMutableSnapshot 

pub struct NestedMutableSnapshot { /* private fields */ }

A nested mutable snapshot.

This is a mutable snapshot that has a parent. Changes made in this snapshot are applied to the parent when apply() is called, not to the global snapshot.

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 NestedMutableSnapshot

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

pub fn snapshot_id(&self) -> SnapshotId

pub fn invalid(&self) -> SnapshotIdSet

pub fn read_only(&self) -> bool

pub fn root_mutable(&self) -> Arc<MutableSnapshot>

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

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

pub fn has_pending_changes(&self) -> bool

pub fn pending_children(&self) -> Vec<SnapshotId>

pub fn has_pending_children(&self) -> bool

pub fn parent_mutable(&self) -> Option<Arc<MutableSnapshot>>

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

pub fn apply(&self) -> SnapshotApplyResult

pub fn take_nested_mutable_snapshot( self: &Arc<Self>, read_observer: Option<ReadObserver>, write_observer: Option<WriteObserver>, ) -> Arc<NestedMutableSnapshot>