Struct os::mm::PageTable

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pub struct PageTable {
    root_ppn: PhysPageNum,
    frames: Vec<FrameTracker>,
}

Expand description

Record root ppn and has the same lifetime as 1 and 2 level PageTableEntry

Fields

root_ppn: PhysPageNumframes: Vec<FrameTracker>

Implementations

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impl PageTable

Assume that it won’t oom when creating/mapping.

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pub fn new() -> Self

Create an empty PageTable

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pub fn from_token(satp: usize) -> Self

Temporarily used to get arguments from user space.

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fn find_pte_create(&mut self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

Find phsical address by virtual address, create a frame if not exist

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fn find_pte(&self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

Find phsical address by virtual address

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pub fn map(&mut self, vpn: VirtPageNum, ppn: PhysPageNum, flags: PTEFlags)

Create a mapping form vpn to ppn

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pub fn unmap(&mut self, vpn: VirtPageNum)

Delete a mapping form vpn

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

Translate VirtPageNum to PageTableEntry

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pub fn translate_va(&self, va: VirtAddr) -> Option<PhysAddr>

Translate VirtAddr to PhysAddr

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pub fn token(&self) -> usize

Get root ppn

Auto Trait Implementations

impl RefUnwindSafe for PageTable

impl Send for PageTable

impl Sync for PageTable

impl Unpin for PageTable

impl UnwindSafe for PageTable

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct os::mm::PageTable

Fields

Implementations

impl PageTable

pub fn new() -> Self

pub fn from_token(satp: usize) -> Self

fn find_pte_create(&mut self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

fn find_pte(&self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

pub fn map(&mut self, vpn: VirtPageNum, ppn: PhysPageNum, flags: PTEFlags)

pub fn unmap(&mut self, vpn: VirtPageNum)

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

pub fn translate_va(&self, va: VirtAddr) -> Option<PhysAddr>

pub fn token(&self) -> usize

Auto Trait Implementations

impl RefUnwindSafe for PageTable

impl Send for PageTable

impl Sync for PageTable

impl Unpin for PageTable

impl UnwindSafe for PageTable

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct os::mm::PageTable

Fields

Implementations

impl PageTable

pub fn new() -> Self

pub fn from_token(satp: usize) -> Self

fn find_pte_create(&mut self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

fn find_pte(&self, vpn: VirtPageNum) -> Option<&mut PageTableEntry>

pub fn map(&mut self, vpn: VirtPageNum, ppn: PhysPageNum, flags: PTEFlags)

pub fn unmap(&mut self, vpn: VirtPageNum)

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

pub fn translate_va(&self, va: VirtAddr) -> Option<PhysAddr>

pub fn token(&self) -> usize

Auto Trait Implementations

impl RefUnwindSafe for PageTable

impl Send for PageTable

impl Sync for PageTable

impl Unpin for PageTable

impl UnwindSafe for PageTable

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,