Struct page_table::VmFlags

#[repr(transparent)]
pub struct VmFlags<Meta: VmMeta>(pub usize, _);

页表项属性。

页表项属性一定完全包含在页表项中，所以独立的页表项属性实现为一个无法获取地址的页表项。

Tuple Fields

0: usize

Implementations

impl<Meta: VmMeta> VmFlags<Meta>

pub const unsafe fn from_raw(raw: usize) -> Self

将 raw 整数转化为一个页表项属性。

Safety

调用者需要保证 raw 里不表示属性的位全是零。

pub fn is_leaf(self) -> bool

如果页表项指向一个页而非子页表，返回 true。

pub fn is_huge(self, level: usize) -> bool

如果页表项指向一个非 0 级的页，返回 true。

pub fn valid(self) -> bool

如果页表项有效，返回 true。

pub fn build_pte(self, ppn: PPN<Meta>) -> Pte<Meta>

构造具有 self 页表项属性，并指向 ppn 物理页的页表项。

Trait Implementations

impl<Meta: Clone + VmMeta> Clone for VmFlags<Meta>

fn clone(&self) -> VmFlags<Meta>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Meta: Debug + VmMeta> Debug for VmFlags<Meta>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<Meta: Hash + VmMeta> Hash for VmFlags<Meta>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<Meta: PartialEq + VmMeta> PartialEq<VmFlags<Meta>> for VmFlags<Meta>

fn eq(&self, other: &VmFlags<Meta>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Meta: Copy + VmMeta> Copy for VmFlags<Meta>

impl<Meta: Eq + VmMeta> Eq for VmFlags<Meta>

impl<Meta: VmMeta> StructuralEq for VmFlags<Meta>

impl<Meta: VmMeta> StructuralPartialEq for VmFlags<Meta>