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use crate::structures::paging::{PageSize, PhysFrame, Size4KiB};
use core::ops::{Deref, DerefMut};
pub unsafe trait FrameAllocator<S: PageSize> {
fn allocate_frame(&mut self) -> Option<UnusedPhysFrame<S>>;
}
pub trait FrameDeallocator<S: PageSize> {
fn deallocate_frame(&mut self, frame: UnusedPhysFrame<S>);
}
#[derive(Debug)]
pub struct UnusedPhysFrame<S: PageSize = Size4KiB>(PhysFrame<S>);
impl<S: PageSize> UnusedPhysFrame<S> {
pub unsafe fn new(frame: PhysFrame<S>) -> Self {
Self(frame)
}
pub fn frame(self) -> PhysFrame<S> {
self.0
}
}
impl<S: PageSize> Deref for UnusedPhysFrame<S> {
type Target = PhysFrame<S>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl<S: PageSize> DerefMut for UnusedPhysFrame<S> {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}