Struct random_access_memory::RandomAccessMemory

pub struct RandomAccessMemory { /* fields omitted */ }

Main constructor.

Methods

impl RandomAccessMemory

pub fn new(page_size: usize) -> Self

Create a new instance.

pub fn default() -> Self

Create a new instance with a 1mb page size.

pub fn with_buffers(page_size: usize, buffers: Vec<Vec<u8>>) -> Self

Create a new instance, but pass the initial buffers to the constructor.

Trait Implementations

impl Debug for RandomAccessMemory

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

Formats the value using the given formatter.

impl RandomAccess for RandomAccessMemory

type Error = Error

An error.

fn write(&mut self, offset: usize, data: &[u8]) -> Result<(), Self::Error>

Write bytes at an offset to the backend.

fn read(&mut self, offset: usize, length: usize) -> Result<Vec<u8>, Self::Error>

Read a sequence of bytes at an offset from the backend.

fn read_to_writer(
    &mut self,
    _offset: usize,
    _length: usize,
    _buf: &mut impl Write
) -> Result<(), Self::Error>

Read a sequence of bytes at an offset from the backend.

fn del(&mut self, offset: usize, length: usize) -> Result<(), Self::Error>

Delete a sequence of bytes at an offset from the backend.

fn truncate(&mut self, _length: usize) -> Result<(), Self::Error>

Resize the sequence of bytes, possibly discarding or zero-padding bytes from the end.

fn len(&mut self) -> Result<usize, Self::Error>

Get the size of the storage in bytes.

fn is_empty(&mut self) -> Result<bool, Self::Error>

Whether the storage is empty. For some storage backends it may be cheaper to calculate whether the storage is empty than to calculate the length.