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BitCache

Struct BitCache 

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pub struct BitCache { /* private fields */ }
Expand description

空いているindexをbitで管理する 0: 空, 1: 空でない

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impl BitCache

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pub fn new() -> BitCache

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pub fn update_start(&mut self)

配列の空き状態を見て探索開始indexを進める

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pub fn get(&self, idx: usize) -> usize

指定されたインデックスを取得する 空なら0, 空でないなら0以外

§Arguments
  • idx- 調べたいindex
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pub fn set(&mut self, idx: usize)

指定されたインデックスのビットを立てる

§Arguments
  • idx- ビットを立てたいindex
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pub fn find_empty_idx(&self, offset: usize) -> usize

offset以降の最初の空いているインデックスを返す

§Arguments
  • offset- 探索開始インデックス
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pub fn last_index_of_one(&self) -> Option<usize>

cacheの中で一番最後に現れる1のindexを返す

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