Struct MapArea

pub struct MapArea {
    vpn_range: SimpleRange<VirtPageNum>,
    data_frames: BTreeMap<VirtPageNum, FrameTracker>,
    map_type: MapType,
    map_perm: MapPermission,
}

map area structure, controls a contiguous piece of virtual memory

Fields

vpn_range: SimpleRange<VirtPageNum>

data_frames: BTreeMap<VirtPageNum, FrameTracker>

map_type: MapType

map_perm: MapPermission

Implementations

impl MapArea

pub fn new( start_va: VirtAddr, end_va: VirtAddr, map_type: MapType, map_perm: MapPermission, ) -> Self

pub fn from_another(another: &Self) -> Self

pub fn map_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)

pub fn unmap_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)

pub fn map(&mut self, page_table: &mut PageTable)

pub fn unmap(&mut self, page_table: &mut PageTable)

pub fn copy_data(&mut self, page_table: &PageTable, data: &[u8])

data: start-aligned but maybe with shorter length assume that all frames were cleared before