Struct BumpAllocator

pub struct BumpAllocator {
    current_chunk: NonNull<Chunk>,
    allocation_count: i32,
    chunk_pool: Arc<ChunkPool>,
    stats: Stats,
}

A simple bump allocator, sub-allocating from fixed size chunks that are provided by a parent allocator.

If an allocation is larger than the chunk size, a chunk sufficiently large to contain the allocation is added.

Fields

current_chunk: NonNull<Chunk>

The chunk we are currently allocating from.

allocation_count: i32

For debugging.

chunk_pool: Arc<ChunkPool>

stats: Stats

Implementations

impl BumpAllocator

pub fn new(chunk_pool: Arc<ChunkPool>) -> Self

pub fn get_stats(&mut self) -> Stats

pub fn reset_stats(&mut self)

pub fn allocate_item( &mut self, layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

pub fn deallocate_item(&mut self, ptr: NonNull<u8>, layout: Layout)

pub unsafe fn grow_item( &mut self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

pub unsafe fn shrink_item( &mut self, ptr: NonNull<u8>, old_layout: Layout, new_layout: Layout, ) -> Result<NonNull<[u8]>, AllocError>

fn alloc_chunk(&mut self, item_size: usize) -> Result<(), AllocError>

Trait Implementations

impl Drop for BumpAllocator

fn drop(&mut self)

Executes the destructor for this type.