Struct KvSpillManager 

pub struct KvSpillManager { /* private fields */ }

2026-09-25: The swap files of one directory and their recorded size.

Implementations

impl KvSpillManager

pub fn new(spill_dir: PathBuf, max_bytes: u64) -> Result<Self>

2026-09-25: A manager for spill_dir with a max_bytes budget. Creates the directory if it is missing; otherwise deletes the swap_* files already in it, ignoring failures to delete.

pub fn create_file(&mut self) -> Result<(u64, BufWriter<File>)>

2026-09-25: Create the next swap file; returns its id and a buffered writer.

pub fn open_file(&self, id: u64) -> Result<BufReader<File>>

2026-09-25: Open swap file id for buffered reading.

pub fn remove_file(&mut self, id: u64) -> Result<()>

2026-09-25: Delete swap file id and subtract its size from the recorded usage.

pub fn record_usage(&mut self, id: u64)

2026-09-25: Add file id’s current size to the recorded usage. Call it once, after the writer is flushed; a missing file adds nothing.

pub fn has_space(&self, estimated_bytes: u64) -> bool

2026-09-25: Whether estimated_bytes more would stay within the budget.

pub fn used_bytes(&self) -> u64

2026-09-25: Recorded usage in bytes.

Trait Implementations

impl Drop for KvSpillManager

fn drop(&mut self)

Executes the destructor for this type.