Struct UserMem

pub struct UserMem { /* private fields */ }

Wrapper to safely allocate memory for guest VMs.

The underlying memory is freed automatically once the UserMem instance is dropped.

Memory can be mapped into a guest VM with Vm::set_user_memory_region.

Implementations

impl UserMem

pub fn new(len: usize) -> Result<UserMem>

Allocate a zero-initialized memory region of len bytes.

pub fn with_init(len: usize, init_from: &[u8]) -> Result<UserMem>

Allocate a zero-initialized memory region of len bytes and initialize the first bytes with init_from.

Panics

Panics if init_from is larger than the memory size len.

pub fn load(&mut self, addr: PhysAddr, data: &[u8])

Load the bytes stored in data into memory at physical address addr.

Panics

Panics if addr + data.len is larger than the memory size len.

Trait Implementations

impl AsMut<[u8]> for UserMem

fn as_mut(&mut self) -> &mut [u8]

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<[u8]> for UserMem

fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.

impl Drop for UserMem

fn drop(&mut self)

Free underlying memory.