Struct Heap 

pub struct Heap<const SIZE: usize> { /* private fields */ }

The simplest possible heap.

Safety

Because it’s the simplest implementation, it does NOT free memory. Any memory you drop cannot be reused (it’s leaked), so avoid dropping anything whenever possible.

It is recommended that you use embedded-alloc

Implementations

impl<const SIZE: usize> Heap<SIZE>

pub const fn new() -> Self

Create a new heap allocator

pub fn used(&self) -> usize

Returns an estimate of the amount of bytes in use.

Trait Implementations

impl<const SIZE: usize> GlobalAlloc for Heap<SIZE>

unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.