Struct VamanaStorageLayout 

pub struct VamanaStorageLayout {
    pub dim: u32,
    pub r: u32,
    pub alpha: f32,
    pub num_nodes: u64,
    pub entry: u64,
    pub adjacency_offset: u64,
    pub vectors_offset: u64,
}

Vamana on-disk layout descriptor.

Populated when opening or creating an index file; used to compute byte offsets for io_uring scatter/gather reads.

Fields

dim: u32

Vector dimensionality.

r: u32

Maximum out-degree per node.

alpha: f32

α-pruning factor (stored for validation when reopening the file).

num_nodes: u64

Total number of nodes.

entry: u64

Internal index of the entry-point node.

adjacency_offset: u64

Byte offset of the adjacency block from the start of the file.

vectors_offset: u64

Byte offset of the vectors block from the start of the file.

Implementations

impl VamanaStorageLayout

pub fn new(dim: u32, r: u32, alpha: f32, num_nodes: u64, entry: u64) -> Self

Build a layout descriptor for a freshly written index.

Offsets are computed deterministically from dim, r, and num_nodes:

• adjacency_offset = HEADER_BYTES
• vectors_offset = adjacency_offset + r * 4 * num_nodes

pub fn adjacency_bytes(&self) -> u64

Total size of the adjacency block in bytes.

pub fn vectors_bytes(&self) -> u64

Total size of the vectors block in bytes.

Trait Implementations

impl Clone for VamanaStorageLayout

fn clone(&self) -> VamanaStorageLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VamanaStorageLayout

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

Formats the value using the given formatter.

impl PartialEq for VamanaStorageLayout

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for VamanaStorageLayout