Struct Allocator

pub struct Allocator<'a> {
    block_list: Option<RefCell<BlockList<'a>>>,
}

Simple kernel allocator that keeps a singly-linked list of blocks and finds the first fit.

Fields

block_list: Option<RefCell<BlockList<'a>>>

Implementations

impl<'a> Allocator<'a>

pub const fn uninitialized() -> Self

pub fn init(&mut self, block_list: BlockList<'a>)

Trait Implementations

impl GlobalAlloc for Allocator<'_>

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

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, ptr: *mut u8, _: 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.