Struct CapacityPool 

pub struct CapacityPool { /* private fields */ }

The room compactions in progress hold on the volumes they write to, shared by every tree given the same pool.

Every tree keeps a pool of its own unless it is given one with Config::compaction_capacity. Trees whose files share volumes should share a pool: each then reserves against what the others have still to write instead of counting on the same free bytes. The account is kept in this process: room another process takes shows only in the free space the volume reports.

Examples

use lsm_tree::{CapacityPool, Config, SequenceNumberCounter};
use std::sync::Arc;

let pool = Arc::new(CapacityPool::default());
let a = Config::new(&a_dir, SequenceNumberCounter::default(), SequenceNumberCounter::default())
    .compaction_capacity(Arc::clone(&pool));
let b = Config::new(&b_dir, SequenceNumberCounter::default(), SequenceNumberCounter::default())
    .compaction_capacity(Arc::clone(&pool));

Trait Implementations

impl Debug for CapacityPool

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

Formats the value using the given formatter.

impl Default for CapacityPool

fn default() -> Self

Returns the “default value” for a type.