Struct BuddyAllocator 

pub struct BuddyAllocator { /* private fields */ }

Implementations

impl BuddyAllocator

pub const fn new() -> Self

Creates a new instance.

pub fn init(&mut self, memory_regions: &[MemoryRegion])

Performs the init operation.

impl BuddyAllocator

pub fn alloc_zone( &mut self, order: u8, zone: ZoneType, token: &IrqDisabledToken, ) -> Result<PhysFrame, AllocError>

Allocate explicitly from one zone (e.g. DMA-only callers).

pub fn alloc_zone_migratetype( &mut self, order: u8, zone: ZoneType, migratetype: Migratetype, token: &IrqDisabledToken, ) -> Result<PhysFrame, AllocError>

Allocate explicitly from one zone with a migratetype hint.

This keeps the target zone fixed but still selects the preferred free-list class and fallback donor order from migratetype.

impl BuddyAllocator

pub fn page_totals(&self) -> (usize, usize)

Fast totals without heap allocation (safe in low-level paths).

pub fn get_zone(&self, idx: usize) -> &Zone

Get a reference to a zone by index.

pub fn zone_snapshot(&self, out: &mut [ZoneStats]) -> usize

Snapshot zones without heap allocation. Returns the number of entries written to out.

Trait Implementations

impl FrameAllocator for BuddyAllocator

fn alloc( &mut self, order: u8, token: &IrqDisabledToken, ) -> Result<PhysFrame, AllocError>

Performs the alloc operation.

fn free(&mut self, frame: PhysFrame, order: u8, token: &IrqDisabledToken)

Performs the free operation.

fn alloc_frame( &mut self, token: &IrqDisabledToken, ) -> Result<PhysFrame, AllocError>

Allocate a single frame (convenience method)