Struct BumpAlloc

pub struct BumpAlloc { /* private fields */ }

A very simple allocator for Miden SDK-based programs.

This allocator does not free memory, it simply grows the heap until it runs out of available space for further allocations.

Implementations

impl BumpAlloc

pub const fn new() -> Self

Create a new instance of this allocator

NOTE: Only one instance of this allocator should ever be used at a time, as it is allocating from the global heap, not from memory reserved for itself.

Trait Implementations

impl Default for BumpAlloc

fn default() -> Self

Returns the “default value” for a type.

impl GlobalAlloc for BumpAlloc

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.