Struct HeapMemoryProvider 

pub struct HeapMemoryProvider { /* private fields */ }

An implementation of MemoryProvider that uses heap memory for testing purposes.

Trait Implementations

impl Debug for HeapMemoryProvider

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

Formats the value using the given formatter.

impl Default for HeapMemoryProvider

fn default() -> HeapMemoryProvider

Returns the “default value” for a type.

impl MemoryProvider for HeapMemoryProvider

const PAGE_SIZE: u64 = WASM_PAGE_SIZE

The size of a memory page in bytes.

fn grow(&mut self, new_pages: u64) -> MemoryResult<u64>

Attempts to grow the memory by new_pages (added pages).

fn size(&self) -> u64

Gets the current size of the memory in bytes.

fn pages(&self) -> u64

Gets the amount of pages currently allocated.

fn read(&self, offset: u64, buf: &mut [u8]) -> MemoryResult<()>

Reads data from memory starting at offset into the provided buffer buf.

fn write(&mut self, offset: u64, buf: &[u8]) -> MemoryResult<()>

Writes data from the provided buffer buf into memory starting at offset.