Struct Pool 

pub struct Pool { /* private fields */ }

A pool of threads that do nothing but wait for disks.

Cloning a handle is cheap and gives another handle on the same pool. The threads stop when the last handle goes away.

Implementations

impl Pool

pub fn new(config: Config) -> Self

A pool sized and configured by config.

Panics

If a thread cannot be spawned, which is not a condition a database can carry on from and is not one a caller can do anything about.

pub fn config(&self) -> Config

How this pool is sized.

pub fn stats(&self) -> Stats

What it has read since it was made.

pub fn submit(&self, file: &Arc<dyn File>, requests: Vec<Request>) -> Completion

Queues every request against file and hands back something to wait on or poll.

The requests are merged where the configuration says to, then queued. This call does not block on the disk, which is the point: the caller goes back to decoding the row group it already has.

pub fn queued(&self) -> usize

How many jobs are queued and not yet picked up.

Trait Implementations

impl Clone for Pool

fn clone(&self) -> Pool

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Pool

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

Formats the value using the given formatter.