Struct VirtualMemoryManager

pub struct VirtualMemoryManager {
    memmap: Vec<VirtualMemoryMap>,
    asid: u16,
    page_tables: Vec<Arc<PageTable>>,
}

Fields

memmap: Vec<VirtualMemoryMap>

asid: u16

page_tables: Vec<Arc<PageTable>>

Implementations

impl VirtualMemoryManager

pub fn new() -> Self

Creates a new virtual memory manager.

Returns

A new virtual memory manager with default values.

pub fn set_asid(&mut self, asid: u16)

Sets the ASID (Address Space ID) for the virtual memory manager.

Arguments

• asid - The ASID to set

pub fn get_asid(&self) -> u16

Returns the ASID (Address Space ID) for the virtual memory manager.

Returns

The ASID for the virtual memory manager.

pub fn get_memmap(&self) -> &Vec<VirtualMemoryMap>

pub fn add_memory_map( &mut self, map: VirtualMemoryMap, ) -> Result<(), &'static str>

Adds a memory map to the virtual memory manager.

Arguments

• map - The memory map to add

Returns

A result indicating success or failure.

pub fn get_memory_map(&self, idx: usize) -> Option<&VirtualMemoryMap>

Returns the memory map at the given index.

Arguments

• idx - The index of the memory map to retrieve

Returns

The memory map at the given index, if it exists.

pub fn remove_memory_map(&mut self, idx: usize) -> Option<VirtualMemoryMap>

Removes the memory map at the given index.

Arguments

• idx - The index of the memory map to remove

Returns

The removed memory map, if it exists.

pub fn remove_all_memory_maps(&mut self) -> Vec<VirtualMemoryMap>

Removes all memory maps.

Returns

The removed memory maps.

pub fn restore_memory_maps( &mut self, maps: Vec<VirtualMemoryMap>, ) -> Result<(), &'static str>

Restores the memory maps from a given vector.

Arguments

• maps - The vector of memory maps to restore

Returns

A result indicating success or failure.

pub fn search_memory_map(&self, vaddr: usize) -> Option<&VirtualMemoryMap>

Searches for a memory map containing the given virtual address.

Arguments

• vaddr - The virtual address to search for

Returns

The memory map containing the given virtual address, if it exists.

pub fn search_memory_map_idx(&self, vaddr: usize) -> Option<usize>

Searches for the index of a memory map containing the given virtual address.

Arguments

• vaddr - The virtual address to search for

Returns

The index of the memory map containing the given virtual address, if it exists.

pub fn add_page_table(&mut self, page_table: Arc<PageTable>)

Adds a page table to the virtual memory manager.

pub fn get_root_page_table(&self) -> Option<&mut PageTable>

Returns the root page table for the current address space.

Returns

The root page table for the current address space, if it exists.

pub fn translate_vaddr(&self, vaddr: usize) -> Option<usize>

Translate a virtual address to physical address

Arguments

• vaddr - The virtual address to translate

Returns

The translated physical address. Returns None if no mapping exists for the address

Trait Implementations

impl Clone for VirtualMemoryManager

fn clone(&self) -> VirtualMemoryManager

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VirtualMemoryManager

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

Formats the value using the given formatter.

impl Drop for VirtualMemoryManager

fn drop(&mut self)

Drops the virtual memory manager, freeing the address space if it is still in use.