Struct kernel::mem::Allocator

pub struct Allocator {
    pub page_allocated: [usize; 32768],
    pub base_addr: usize,
}

Frame allocator gives out one or more pages.

Fields

page_allocated: [usize; 32768]

A bool array records whether a page is handed out

base_addr: usize

Pages are handed out from base_addr, which is the start address of HEAP.

Implementations

impl Allocator

pub const fn new() -> Self

Returns a new allocator instance

base_addr should be intialized later.

fn offset_addr_of(&self, id: usize) -> usize

unsafe fn offset_id_of(&self, id: usize) -> *mut u8

fn offset_page_of(&self, page: *mut u8) -> usize

pub fn allocate(&mut self, size: usize) -> *mut u8

pub fn deallocate(&mut self, addr: *mut u8)

pub fn debug(&self)

Print page allocation status