Struct DiskCompactionPlan 

pub struct DiskCompactionPlan { /* private fields */ }

A prefix of an oldest-first runtime chain to consolidate into one base.

The last runtime layer is writable even when the sandbox is stopped. It is never selected. A count is an upper bound on sealed inputs. Fewer than two sealed layers produces a no-op.

Implementations

impl DiskCompactionPlan

pub fn new( runtime_layers: usize, layers: Option<usize>, ) -> Result<Self, LayerSelectionError>

Resolve an optional upper bound of oldest layers, including the base but not the writable head.

pub fn prefix(&self) -> Range<usize>

Selected oldest-first prefix; an empty range means no rewrite is necessary.

pub fn retained(&self) -> Range<usize>

Layers retained after the prefix, including the writable head.

pub fn output_layers(&self) -> usize

Physical layer count after replacing the selected prefix with a single base.

pub fn is_noop(&self) -> bool

Whether this operation would leave the chain unchanged.

Trait Implementations

impl Clone for DiskCompactionPlan

fn clone(&self) -> DiskCompactionPlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DiskCompactionPlan

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

Formats the value using the given formatter.

impl Eq for DiskCompactionPlan

impl PartialEq for DiskCompactionPlan

fn eq(&self, other: &DiskCompactionPlan) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DiskCompactionPlan