Struct wasmi::MemoryRef

pub struct MemoryRef(_);

Reference to a MemoryInstance.

This reference has a reference-counting semantics.

Methods from Deref<Target = MemoryInstance>

fn initial_pages(&self) -> u32

fn maximum_pages(&self) -> Option<u32>

fn size(&self) -> u32

Return linear memory size (in pages).

fn get(&self, offset: u32, size: usize) -> Result<Vec<u8>, Error>

Get data at given offset.

fn get_into(&self, offset: u32, target: &mut [u8]) -> Result<(), Error>

Write memory slice into another slice

fn set(&self, offset: u32, value: &[u8]) -> Result<(), Error>

Set data at given offset.

fn grow(&self, pages: u32) -> Result<u32, Error>

Increases the size of the linear memory by given number of pages. Returns previous memory size (in pages) if succeeds.

fn copy(
    &self,
    src_offset: usize,
    dst_offset: usize,
    len: usize
) -> Result<(), Error>

Copy memory region. Semantically equivalent to memmove.

fn copy_nonoverlapping(
    &self,
    src_offset: usize,
    dst_offset: usize,
    len: usize
) -> Result<(), Error>

Copy memory region, non-overlapping version. Semantically equivalent to memcpy, but returns Error if source overlaping with destination.

fn clear(&self, offset: usize, new_val: u8, len: usize) -> Result<(), Error>

Clear memory region with a specified value. Semantically equivalent to memset.

fn zero(&self, offset: usize, len: usize) -> Result<(), Error>

Zero memory region

Trait Implementations

impl Clone for MemoryRef

fn clone(&self) -> MemoryRef

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryRef

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Deref for MemoryRef

type Target = MemoryInstance

The resulting type after dereferencing.

fn deref(&self) -> &MemoryInstance

Dereferences the value.