Struct ReadAhead 

pub struct ReadAhead { /* private fields */ }

Implementations

impl ReadAhead

pub fn new(cap: u64) -> Self

pub fn set_max_windows(&mut self, n: usize)

pub fn next_expected(&self) -> u64

pub fn window(&self) -> u64

The current adaptive window size (grows geometrically on sequential access, resets to the floor on seek). Drives prefetch depth.

pub fn len(&self) -> u64

pub fn clear(&mut self) -> u64

pub fn set_cap(&mut self, cap: u64)

pub fn covers(&self, off: u64, len: usize) -> bool

pub fn store_window(&mut self, start: u64, bytes: Vec<u8>) -> (u64, u64)

pub fn read_into( &mut self, dst: &mut [u8], off: u64, backing_len: u64, fill: impl FnMut(&mut [u8], u64) -> Result<()>, ) -> Result<(u64, u64)>