Struct BatchArena 

pub struct BatchArena { /* private fields */ }

Arena allocator optimized for batch cryptographic operations.

Provides fast bump allocation for temporary data structures used during batch verification, serialization, and merkle tree building.

Implementations

impl BatchArena

pub fn new() -> Self

Create a new arena with default capacity (1MB).

pub fn with_capacity(capacity: usize) -> Self

Create a new arena with specified capacity.

pub fn for_events(count: usize) -> Self

Create arena sized for a batch of events.

Estimates ~1KB per event for canonical bytes + metadata.

pub fn for_hashes(count: usize) -> Self

Create arena sized for batch hash operations.

Estimates 32 bytes per hash + overhead.

pub fn alloc_bytes(&self, bytes: &[u8]) -> &[u8]

Allocate a slice of bytes in the arena.

pub fn alloc_str(&self, s: &str) -> &str

Allocate a copy of a string in the arena.

pub fn alloc<T>(&self, value: T) -> &mut T

Allocate a value in the arena.

pub fn alloc_slice<T: Copy>(&self, slice: &[T]) -> &[T]

Allocate a slice in the arena.

pub fn alloc_vec<T>(&self) -> BumpVec<'_, T>

Create a new vector in the arena.

pub fn alloc_vec_with_capacity<T>(&self, capacity: usize) -> BumpVec<'_, T>

Create a vector with capacity in the arena.

pub fn alloc_slice_fill_default<T: Default + Clone>( &self, count: usize, ) -> &mut [T]

Allocate space for N items and return a slice.

pub fn alloc_hash_array(&self, count: usize) -> &mut [Hash]

Allocate a hash array in the arena.

pub fn allocated_bytes(&self) -> usize

Get the number of bytes allocated.

pub fn reset(&mut self)

Reset the arena, freeing all allocations.

This allows reusing the arena for another batch without deallocating the underlying memory.

pub fn as_bump(&self) -> &Bump

Get a reference to the underlying bump allocator.

Useful for advanced use cases or when integrating with other bumpalo-aware APIs.

Trait Implementations

impl Debug for BatchArena

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

Formats the value using the given formatter.

impl Default for BatchArena

fn default() -> Self

Returns the “default value” for a type.