Struct sunrise_libuser::allocator::Allocator

pub struct Allocator(Mutex<Heap>);

The libuser heap allocator.

A wrapper to linked_list_allocator that uses the svcSetHeapSize syscall to expand its memory when needed.

Implementations

impl Allocator

fn expand(heap: &mut MutexGuard<Heap>, by: usize) -> Result<(), KernelError>

Safely expands the heap if possible.

pub const fn new() -> Allocator

Creates an empty heap.

Trait Implementations

impl GlobalAlloc for Allocator

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

Allocate memory as described by the given layout.

unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout)

Deallocate 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

Shrink or grow a block of memory to the given new_size. The block is described by the given ptr pointer and layout.