Struct StackAllocator 

pub struct StackAllocator<const N: usize> { /* private fields */ }

A simple bump‑allocator that lives on the stack (or in static memory).

It will tries to reuse freed memory only if it is the most recently allocated block.

N is the size of the backing buffer in bytes.

Implementations

impl<const N: usize> StackAllocator<N>

pub const fn new() -> Self

Create a fresh allocator. The buffer starts empty.

pub unsafe fn reset(&mut self)

Reset the allocator, discarding all previously allocated memory.

Safety

the caller must guarantee that no live allocation created by this allocator is still in use.

pub fn current_offset(&self) -> usize

Get the current offset of the allocator.

Trait Implementations

impl<const N: usize> Allocator for StackAllocator<N>

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

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to allocate a block of memory.

unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout)

🔬This is a nightly-only experimental API. (allocator_api)

Deallocates the memory referenced by ptr.

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

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to extend the memory block.

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

🔬This is a nightly-only experimental API. (allocator_api)

Attempts to shrink the memory block.

fn by_ref(&self) -> &Self

where Self: Sized,

🔬This is a nightly-only experimental API. (allocator_api)

Creates a “by reference” adapter for this instance of Allocator.

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

🔬This is a nightly-only experimental API. (allocator_api)

Behaves like allocate, but also ensures that the returned memory is zero-initialized.

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

🔬This is a nightly-only experimental API. (allocator_api)

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

impl<const N: usize> Default for StackAllocator<N>

fn default() -> Self

Returns the “default value” for a type.

impl<const N: usize> Send for StackAllocator<N>

impl<const N: usize> Sync for StackAllocator<N>