pub struct OverlayState { /* private fields */ }Expand description
Holder for the active overlay (if any). Threaded through the index state so every Cypher query can opt into the per-branch view.
Overlay storage is bounded by [OVERLAY_CAPACITY]; once that many
branches have been registered, Self::set evicts the
least-recently-set overlay to keep daemon memory predictable. Each
overlay still owns a full base-graph clone (see
BranchOverlay::materialize), so the cap matters in practice.
Implementations§
Source§impl OverlayState
impl OverlayState
Sourcepub fn set(&mut self, overlay: BranchOverlay)
pub fn set(&mut self, overlay: BranchOverlay)
Insert or replace a branch overlay. Activating it is a separate
step (Self::activate).
When the registry already holds [OVERLAY_CAPACITY] distinct
branches, the oldest one is evicted before insertion. If the
evicted overlay happens to be currently active, the active slot
is cleared so we don’t leave a dangling pointer.
Sourcepub fn get(&self, branch: &str) -> Option<&BranchOverlay>
pub fn get(&self, branch: &str) -> Option<&BranchOverlay>
Borrow a stored overlay (if registered).
Sourcepub fn get_mut(&mut self, branch: &str) -> Option<&mut BranchOverlay>
pub fn get_mut(&mut self, branch: &str) -> Option<&mut BranchOverlay>
Mutable borrow of a stored overlay.
Sourcepub fn activate(&mut self, branch: Option<String>)
pub fn activate(&mut self, branch: Option<String>)
Switch the active overlay. Pass None to fall back to the base
graph.
Sourcepub fn graph<'a>(&'a self, base: &'a SymbolGraph) -> &'a SymbolGraph
pub fn graph<'a>(&'a self, base: &'a SymbolGraph) -> &'a SymbolGraph
Borrow the active overlay’s materialized graph, falling back to
base when no overlay is active.
Sourcepub fn reuse_fraction(&self, base: &SymbolGraph) -> f64
pub fn reuse_fraction(&self, base: &SymbolGraph) -> f64
Share of base files the active overlay reused untouched. Returns
1.0 when no overlay is active (the base is fully reused).
Trait Implementations§
Source§impl Clone for OverlayState
impl Clone for OverlayState
Source§fn clone(&self) -> OverlayState
fn clone(&self) -> OverlayState
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read moreSource§impl Debug for OverlayState
impl Debug for OverlayState
Source§impl Default for OverlayState
impl Default for OverlayState
Source§fn default() -> OverlayState
fn default() -> OverlayState
Auto Trait Implementations§
impl Freeze for OverlayState
impl RefUnwindSafe for OverlayState
impl Send for OverlayState
impl Sync for OverlayState
impl Unpin for OverlayState
impl UnsafeUnpin for OverlayState
impl UnwindSafe for OverlayState
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