Struct BumpArena 

pub struct BumpArena { /* private fields */ }

A simple bump allocator for byte slices.

Memory is allocated sequentially; deallocation of individual items is not supported. The entire arena can be reset at once.

Implementations

impl BumpArena

pub fn with_capacity(cap: usize) -> Self

Create a bump arena with the given capacity in bytes.

pub fn alloc_bytes(&mut self, size: usize) -> Option<usize>

Allocate size bytes, returning the start offset.

Returns None if there is not enough space.

pub fn write_at(&mut self, offset: usize, data: &[u8])

Write bytes at the given offset.

pub fn read_at(&self, offset: usize, len: usize) -> &[u8]

Read bytes from the given offset.

pub fn reset(&mut self)

Reset the bump pointer without zeroing memory.

pub fn used(&self) -> usize

Bytes used.

pub fn capacity(&self) -> usize

Total capacity in bytes.

pub fn remaining(&self) -> usize

Remaining bytes.

Trait Implementations

impl Debug for BumpArena

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

Formats the value using the given formatter.