Struct CollectionArenaHandle 

pub struct CollectionArenaHandle { /* private fields */ }

Opaque handle to a per-collection jemalloc arena.

Dropping the handle releases the registry entry. The underlying arena index persists (jemalloc arenas are permanent once created).

Implementations

impl CollectionArenaHandle

pub fn arena_index(&self) -> Option<u32>

Returns the jemalloc arena index, if one was allocated.

pub fn tag(&self) -> &str

Returns the diagnostic tag.

pub fn resident_bytes(&self) -> Option<u64>

Query the resident memory (bytes) in this arena.

Returns None when no dedicated arena exists or the query fails.

Trait Implementations

impl Clone for CollectionArenaHandle

fn clone(&self) -> CollectionArenaHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CollectionArenaHandle

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

Formats the value using the given formatter.