Struct AssociativeContextMap 

pub struct AssociativeContextMap { /* private fields */ }

2-way set-associative context map: 4 bytes per set (2 slots).

Each set has 2 slots, each with a checksum byte and state byte. On lookup, both slots are checked. On write, the slot matching the checksum is updated, or the least-used slot is replaced. This dramatically reduces collision damage for high-order models.

Implementations

impl AssociativeContextMap

pub fn new(byte_size: usize) -> Self

Create a 2-way associative ContextMap. byte_size is the total memory (must be power of 2, at least 8).

pub fn get(&self, hash: u32) -> u8

Get state for hash. Checks both slots.

pub fn set(&mut self, hash: u32, state: u8)

Set state for hash. Updates matching slot or replaces slot 1 (LRU-ish).