Struct kernel::mem::segment::PageSegment

pub struct PageSegment {
    page_range: PageRange,
    frame_map: BTreeMap<PageNumber, Arc<FrameTracker>>,
    map_type: MapType,
    map_permission: MapPermission,
}

The PageSegment struct represents a consecutive range of pages, which are mapped to frames in the same method (Identical or Framed) and have the same permissions.

Fields

page_range: PageRange

frame_map: BTreeMap<PageNumber, Arc<FrameTracker>>

map_type: MapType

map_permission: MapPermission

Implementations

impl PageSegment

pub fn new( start_address: VirtualAddress, end_address: VirtualAddress, map_type: MapType, map_permission: MapPermission ) -> Self

pub fn start(&self) -> PageNumber

pub fn end(&self) -> PageNumber

pub fn page_range(&self) -> &PageRange

pub fn frame_map(&self) -> &BTreeMap<PageNumber, Arc<FrameTracker>>

pub fn frame_map_mut(&mut self) -> &mut BTreeMap<PageNumber, Arc<FrameTracker>>

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

Maps the range of pages represented with page_range to frames in the page_table.

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

Unmaps the range of pages represented with page_range from frames in the page_table.

pub fn map_page(&mut self, page_table: &mut PageTable, page_number: PageNumber)

Maps a page with page_number to a frame in the page_table.

pub fn unmap_page( &mut self, page_table: &mut PageTable, page_number: PageNumber )

Unmaps a page with page_number from a frame in the page_table.

pub fn clone_bytes(&mut self, page_table: &mut PageTable, bytes: &[u8])

Writes bytes to the pages represented with page_range.

Trait Implementations

impl Clone for PageSegment

fn clone(&self) -> PageSegment

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.