Struct SweepContext 

pub struct SweepContext {
    pub history: Vec<Vec<u64>>,
    pub window_size: usize,
    pub direction: &'static str,
    pub prefetch_count: usize,
    pub predicted_next: Vec<Vec<u64>>,
}

Sweep context passed into read_chunked_data_sweep to enable adaptive prefetching based on detected access patterns.

The caller is responsible for maintaining the SweepContext across multiple reads on the same dataset. After each read, the context will contain updated sweep detection state and any predicted next-chunk coordinates.

Fields

history: Vec<Vec<u64>>

Sliding window of recent chunk coordinates.

window_size: usize

Maximum window size.

direction: &'static str

Currently detected sweep direction label.

prefetch_count: usize

How many chunks ahead to predict.

predicted_next: Vec<Vec<u64>>

Predicted next chunk coordinates (populated after each read).

Implementations

impl SweepContext

pub fn new(window_size: usize, prefetch_count: usize) -> Self

Create a new sweep context with the given window size and prefetch count.

pub fn with_defaults() -> Self

Create with default settings (window=12, prefetch=4).