Struct BitmapFrameAllocator 

pub struct BitmapFrameAllocator { /* private fields */ }

Bitmap-based frame allocator

Implementations

impl BitmapFrameAllocator

pub unsafe fn init(&mut self, memory_map: &'static MemoryMapResponse)

Initialize the allocator from the memory map

Safety

This function is unsafe because the caller must guarantee that:

• The passed memory map is valid
• All frames marked as USABLE in it are really unused

pub fn allocate_contiguous(&mut self, count: usize) -> Option<PhysFrame>

Allocate a contiguous block of frames

pub fn deallocate_frame(&mut self, frame: PhysFrame)

Deallocate a frame

pub fn deallocate_contiguous(&mut self, frame: PhysFrame, count: usize)

Deallocate a contiguous block of frames

pub fn stats(&self) -> FrameStats

Get memory statistics

pub fn is_allocated(&self, frame: PhysFrame) -> bool

Check if a frame is allocated

pub fn free_frames(&self) -> usize

Get the number of free frames

Trait Implementations

impl FrameAllocator<Size4KiB> for BitmapFrameAllocator

fn allocate_frame(&mut self) -> Option<PhysFrame>

Allocate a frame of the appropriate size and return it if possible.