Struct LockedHeap

pub struct LockedHeap {
    inner: Mutex<Heap>,
}

Locked heap wrapper implementing GlobalAlloc

Fields

inner: Mutex<Heap>

Implementations

impl LockedHeap

pub const fn empty() -> Self

Create an empty (uninitialized) heap

pub unsafe fn init(&self, start: *mut u8, size: usize)

Initialize the heap with a memory region

Safety

• Must be called exactly once
• Memory region must be valid and not used elsewhere

Trait Implementations

impl GlobalAlloc for LockedHeap

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.