Struct ModuleCache

pub struct ModuleCache { /* private fields */ }

A ModuleCache is a cache of a set of Wasm modules that have been parsed but not yet instantiated, along with a shared and reusable Engine storing their code. The cache must be populated eagerly with all the contracts in a single Host’s lifecycle (at least) added all at once, since each wasmi Engine is locked during execution and no new modules can be added to it.

Implementations

impl ModuleCache

pub fn new(host: &Host) -> Result<Self, HostError>

pub fn add_stored_contracts(&mut self, host: &Host) -> Result<(), HostError>

pub fn parse_and_cache_module( &mut self, host: &Host, contract_id: &Hash, wasm: &[u8], cost_inputs: VersionedContractCodeCostInputs, ) -> Result<(), HostError>

pub fn with_import_symbols<T>( &self, host: &Host, callback: impl FnOnce(&BTreeSet<(&str, &str)>) -> Result<T, HostError>, ) -> Result<T, HostError>

pub fn make_linker(&self, host: &Host) -> Result<Linker<Host>, HostError>

pub fn get_module( &self, host: &Host, wasm_hash: &Hash, ) -> Result<Option<Rc<ParsedModule>>, HostError>

Trait Implementations

impl Clone for ModuleCache

fn clone(&self) -> ModuleCache

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for ModuleCache

fn default() -> ModuleCache

Returns the “default value” for a type.