Struct BackingReader 

pub struct BackingReader<'a> { /* private fields */ }

Implementations

impl<'a> BackingReader<'a>

pub fn new( file: &'a File, buf: &'a Arc<Mutex<ReadAhead>>, pool: &'a ReadAheadPool, key: usize, backing_len: u64, epoch: &'a AtomicU64, ) -> Self

pub fn with_prefetch_planning(self) -> Self

Opt into prefetch-plan capture: every backing read sizes the eviction ring and records the post-read next_expected/window under the read lock, so the caller reads them via Self::prefetch_plan without a second lock acquisition (#429).

pub fn prefetch_plan(&self) -> (u64, u64)

The (next_expected, window) captured by the most recent backing read, or (u64::MAX, 0) if no backing read occurred. Only meaningful when constructed via Self::with_prefetch_planning.

pub fn fills(&self) -> u64

pub fn file(&self) -> &File

pub fn read_exact_at(&self, dst: &mut [u8], abs_offset: u64) -> Result<()>