Struct DataChunk 

pub struct DataChunk {
    pub header: ChunkHeader,
    pub data: Vec<u8>,
}

A single data chunk in a checkpoint.

Fields

header: ChunkHeader

Chunk header.

data: Vec<u8>

Chunk data (may be compressed).

Implementations

impl DataChunk

pub fn new(chunk_type: ChunkType, data: Vec<u8>) -> DataChunk

Create a new data chunk.

pub fn with_id(chunk_type: ChunkType, data: Vec<u8>, id: u64) -> DataChunk

Create a chunk with a custom ID.

pub fn chunk_type(&self) -> Option<ChunkType>

Get the chunk type.

impl DataChunk

Key per chunk that records a stable identity across checkpoints.

DataChunk::chunk_identity builds a (ChunkType, Option<chunk_id>) pair which is stable across snapshots of the same kernel: a control block or HLC-state chunk has identity (ControlBlock, None); a device-memory chunk has identity (DeviceMemory, Some(name_hash)). Two chunks with the same identity refer to the same region — potentially with different bytes — across a base + delta.

pub fn chunk_identity(&self) -> Option<(ChunkType, Option<u64>)>

Stable (kind, id) identity used for delta diffing. None id is used for chunk kinds that appear at most once in a checkpoint.

Trait Implementations

impl Clone for DataChunk

fn clone(&self) -> DataChunk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataChunk

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

Formats the value using the given formatter.