Struct os::mm::MemorySet

pub struct MemorySet {
    page_table: PageTable,
    areas: Vec<MapArea>,
}

memory set structure, controls virtual-memory space

Fields

page_table: PageTable

areas: Vec<MapArea>

Implementations

impl MemorySet

pub fn new_bare() -> Self

Create an empty MemorySet

pub fn token(&self) -> usize

Get pagetable root_ppn

pub fn insert_framed_area( &mut self, start_va: VirtAddr, end_va: VirtAddr, permission: MapPermission )

Assume that no conflicts.

pub fn remove_area_with_start_vpn(&mut self, start_vpn: VirtPageNum)

Remove MapArea that starts with start_vpn

fn push(&mut self, map_area: MapArea, data: Option<&[u8]>)

fn map_trampoline(&mut self)

Mention that trampoline is not collected by areas.

pub fn new_kernel() -> Self

Without kernel stacks.

pub fn from_elf(elf_data: &[u8]) -> (Self, usize, usize)

Include sections in elf and trampoline and TrapContext and user stack, also returns user_sp and entry point.

pub fn from_existed_user(user_space: &Self) -> Self

Clone a same MemorySet

pub fn activate(&self)

Refresh TLB with sfence.vma

pub fn translate(&self, vpn: VirtPageNum) -> Option<PageTableEntry>

Translate throuth pagetable

pub fn recycle_data_pages(&mut self)

Remove all MapArea