Struct StackAllocator 

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

Stack-based allocator for temporary allocations

Allocations must be freed in LIFO order. Very fast and suitable for nested scopes.

Implementations

impl<const SIZE: usize> StackAllocator<SIZE>

pub const fn new() -> Self

Create a new stack allocator

pub fn push(&self, layout: Layout) -> Option<(NonNull<u8>, usize)>

Push an allocation onto the stack

Returns the pointer and the offset to restore when popping.

pub unsafe fn pop(&self, saved_offset: usize)

Pop an allocation from the stack

Arguments

• saved_offset - The offset returned from push

Safety

Must be called in LIFO order matching the push calls.

pub fn depth(&self) -> usize

Get current stack depth (bytes used)

pub fn available(&self) -> usize

Get available space

pub const fn capacity(&self) -> usize

Get total capacity

impl<const SIZE: usize> StackAllocator<SIZE>

pub fn scoped_alloc( &self, layout: Layout, ) -> Option<(NonNull<u8>, StackGuard<'_, SIZE>)>

Allocate with RAII guard that automatically frees on drop

Trait Implementations

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

fn default() -> Self

Returns the “default value” for a type.

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

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