Struct SnapshotView 

pub struct SnapshotView {
    pub main: Arc<RwLock<L0Buffer>>,
    pub extra: Vec<Arc<RwLock<L0Buffer>>>,
    pub started_at_version: u64,
    /* private fields */
}

An isolated, reference-counted view of the L0 tier captured at a point in time.

Reads built from a SnapshotView see the L0 generation(s) that were visible at capture, not later commits: while any view of a generation is alive a commit that would mutate it first freezes it aside (L0Manager::freeze_current_for_snapshot), so the buffers behind main and extra are never mutated after capture. Dropping the view releases its pin; Arc reference counting reclaims a frozen generation once no view holds it. started_at_version is captured for the future C2 base-pinning hook and is not yet consulted.

Always compiled so it can thread through the executor as an inert Option<SnapshotView> in every build; it is only ever constructed by L0Manager::pin_snapshot, which a transaction calls only when UniConfig::ssi_enabled is true, so with SSI off the threaded option is always None.

Fields

main: Arc<RwLock<L0Buffer>>

The pinned main L0 generation at capture time.

extra: Vec<Arc<RwLock<L0Buffer>>>

Generations being flushed at capture time, read after main (oldest visible state).

started_at_version: u64

Main-L0 version at capture; the hook a future C2 will feed to open_at.

Trait Implementations

impl Clone for SnapshotView

fn clone(&self) -> SnapshotView

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SnapshotView

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

Formats the value using the given formatter.