Struct ic_stable_structures::RestrictedMemory

pub struct RestrictedMemory<M: Memory> { /* private fields */ }

RestrictedMemory creates a limited view of another memory. This allows one to divide the main memory into non-intersecting ranges and use different layouts in each region.

Implementations

impl<M: Memory> RestrictedMemory<M>

pub fn new(memory: M, page_range: Range<u64>) -> Self

Trait Implementations

impl<M: Clone + Memory> Clone for RestrictedMemory<M>

fn clone(&self) -> RestrictedMemory<M>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<M: Memory> Memory for RestrictedMemory<M>

fn size(&self) -> u64

Returns the current size of the stable memory in WebAssembly pages. (One WebAssembly page is 64Ki bytes.)

fn grow(&self, delta: u64) -> i64

Tries to grow the memory by new_pages many pages containing zeroes. If successful, returns the previous size of the memory (in pages). Otherwise, returns -1.

fn read(&self, offset: u64, dst: &mut [u8])

Copies the data referred to by offset out of the stable memory and replaces the corresponding bytes in dst.

fn write(&self, offset: u64, src: &[u8])

Copies the data referred to by src and replaces the corresponding segment starting at offset in the stable memory.