Struct QueryArena 

pub struct QueryArena { /* private fields */ }

Arena allocator for query building.

Provides fast allocation with batch deallocation when the scope ends.

Implementations

impl QueryArena

pub fn new() -> Self

Create a new query arena with default capacity.

pub fn with_capacity(capacity: usize) -> Self

Create an arena with specified initial capacity.

pub fn scope<F, R>(&self, f: F) -> R

where F: FnOnce(&ArenaScope<'_>) -> R,

Execute a closure with an arena scope.

The scope provides allocation methods. All allocations are valid within the closure and freed when it returns.

pub fn reset(&mut self)

Reset the arena for reuse.

This is O(1) - just resets the bump pointer.

pub fn allocated_bytes(&self) -> usize

Get the number of bytes currently allocated.

pub fn stats(&self) -> ArenaStats

Get arena statistics.

Trait Implementations

impl Default for QueryArena

fn default() -> Self

Returns the “default value” for a type.