Struct SegmentList

pub struct SegmentList<Seg> { /* private fields */ }

Implementations

impl<Seg> SegmentList<Seg>

where Seg: Segment,

pub async fn checkpoint<IO: Io>( &self, db_file: &IO::File, until_frame_no: u64, log_id: Uuid, io: &IO, ) -> Result<Option<u64>>

Checkpoints as many segments as possible to the main db file, and return the checkpointed frame_no, if anything was checkpointed

pub async fn stream_pages_from<'a>( &self, current_fno: u64, until_fno: u64, seen: &'a mut RoaringBitmap, ) -> (impl Stream<Item = Result<Box<Frame>>> + 'a, u64)

returns a stream of pages from the sealed segment list, and what’s the lowest replication index that was covered. If the returned index is less than start frame_no, the missing frames must be read somewhere else.

Methods from Deref<Target = List<Seg>>

pub fn prepend(&self, item: T)

Prepend the list with the passed sealed segment

pub fn with_head<R>(&self, f: impl FnOnce(&T) -> R) -> Option<R>

Call f on the head of the segments list, if it exists. The head of the list is the most recent segment.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl<Seg: Debug> Debug for SegmentList<Seg>

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

Formats the value using the given formatter.

impl<Seg> Default for SegmentList<Seg>

fn default() -> Self

Returns the “default value” for a type.

impl<Seg> Deref for SegmentList<Seg>

type Target = List<Seg>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.