Struct Prefetch 

pub struct Prefetch {
    pub policy: PrefetchPolicy,
    pub disabled: bool,
    /* private fields */
}

Manage filesystem data prefetch configuration and state for builder.

Fields

policy: PrefetchPolicy

disabled: bool

Implementations

impl Prefetch

pub fn new(policy: PrefetchPolicy) -> Result<Self>

Create a new instance of Prefetch.

pub fn insert(&mut self, obj: &TreeNode, node: &Node)

Insert node into the prefetch Vector if it matches prefetch rules, while recording the index of matched prefetch pattern, or insert it into non-prefetch Vector.

pub fn get_file_nodes(&self) -> (Vec<TreeNode>, Vec<TreeNode>)

Get node Vector of files in the prefetch list and non-prefetch list. The order of prefetch files is the same as the order of prefetch patterns. The order of non-prefetch files is the same as the order of BFS traversal of file tree.

pub fn fs_prefetch_rule_count(&self) -> u32

Get the number of valid prefetch rules.

pub fn get_v5_prefetch_table(&mut self) -> Option<RafsV5PrefetchTable>

Generate filesystem layer prefetch list for RAFS v5.

pub fn get_v6_prefetch_table( &mut self, meta_addr: u64, ) -> Option<RafsV6PrefetchTable>

Generate filesystem layer prefetch list for RAFS v6.

pub fn disable(&mut self)

Disable filesystem data prefetch.

pub fn clear(&mut self)

Reset to initialization state.

Trait Implementations

impl Clone for Prefetch

fn clone(&self) -> Prefetch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Prefetch

fn default() -> Prefetch

Returns the “default value” for a type.