Struct SizedPool 

pub struct SizedPool<T: Default> {
    head: Option<NonZeroUsize>,
    _marker: PhantomData<T>,
}

A pool allocator that allocates fixed-size blocks.

Fields

head: Option<NonZeroUsize>

_marker: PhantomData<T>

Implementations

impl<T: Default> SizedPool<T>

pub const fn new() -> Self

Create a new empty pool.

const fn align_up() -> usize

Calculate the padding required to align the block to align_of::<T>().

pub unsafe fn add_range(&mut self, range: Range<usize>)

Add a range of blocks to the pool.

range - The range of blocks to add.

Safety

The caller must ensure that the range is valid and that the blocks are at least the size of T + SizedPoolMeta + Padding for T.

unsafe fn add_block(&mut self, ptr: usize)

Add a block to the pool.

ptr - The pointer to the block to add.

Safety

The caller must ensure that the pointer is valid and that the block is at least the size of T + SizedPoolMeta + Padding for T.

pub fn alloc(&mut self) -> Option<Owned<T>>

Allocate a block from the pool.

Returns Some(Owned<T>) if a block was successfully allocated, otherwise None.

pub fn dealloc(&mut self, block: Owned<T>)

Deallocate a block back to the pool.

block - The block to deallocate.

Trait Implementations

impl<T: Default> Default for SizedPool<T>

fn default() -> Self

Returns the “default value” for a type.