Struct lucet_module::SparseData

pub struct SparseData<'a> { /* fields omitted */ }

A sparse representation of a Lucet module's initial heap.

The lifetime parameter exists to support zero-copy deserialization for the &[u8] slices representing non-zero pages. For a variant with owned Vec<u8> pages, see OwnedSparseData.

Methods

impl<'a> SparseData<'a>

pub fn new(pages: Vec<Option<&'a [u8]>>) -> Result<Self, Error>

Create a new SparseData from its constituent pages.

Entries in the pages argument which are Some must contain a slice of exactly the host page size (4096), otherwise this function returns Error::IncorrectPageSize. Entries which are None are interpreted as empty pages, which will be zeroed by the runtime.

pub fn pages(&self) -> &[Option<&'a [u8]>]

pub fn get_page(&self, offset: usize) -> &Option<&'a [u8]>

pub fn len(&self) -> usize

Trait Implementations

impl<'a> Clone for SparseData<'a>

fn clone(&self) -> SparseData<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for SparseData<'a>

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

Formats the value using the given formatter.

impl<'de: 'a, 'a> Deserialize<'de> for SparseData<'a>

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<'a> Serialize for SparseData<'a>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.