Struct kalloc::buddy::Allocator

pub struct Allocator<P> { /* fields omitted */ }

A thread-safe allocator with multiple buddy systems.

Implementations

impl<P: Unsigned + PowerOfTwo + 'static> Allocator<P>

pub const fn new() -> Self

Create a allocator with empty memory.

pub unsafe fn add_zone(&mut self, begin: usize, end: usize)

Add free memory [begin, end) to this allocator.

Trait Implementations

impl<P: Unsigned + PowerOfTwo + 'static> GlobalAlloc for Allocator<P>

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.