Struct swim_mem::alloc::Slab

pub struct Slab<'a> { /* fields omitted */ }

Allocator for a hunk of memory partitioned into fixed size memory blocks.

Methods

impl<'a> Slab<'a>

pub fn new(hunk: Block<'a>, unit: usize) -> Slab<'a>

Returns a new Slab that allocates a hunk of memory in unit-sized blocks.

pub fn size(&self) -> usize

Returns the total number of bytes in this Slab.

pub fn block_size(&self) -> usize

Returns the number of bytes in each memory block of this Slab.

pub fn block_count(&self) -> usize

Returns the total number of blocks in this Slab.

pub fn live(&self) -> usize

Returns the number of currently allocated memory blocks.

pub fn dead(&self) -> usize

Returns the number of memory blocks currently available for allocation.

pub fn into_block(self) -> Block<'a>

Consumes this Slab and returns its hunk of memory.

Trait Implementations

impl<'a> Heap<'a> for Slab<'a>

unsafe fn alloc(&self, layout: Layout) -> Result<Block<'a>, HeapError>

Allocates a new memory block sized and aligned to at least Layout; returns None if the allocation fails.

unsafe fn dealloc(&self, block: Block<'a>) -> usize

Deallocates a memory block previously allocated by alloc. Returns the number of freed bytes.