Struct radix_engine::vm::wasm::wasmi::WasmiModule

pub struct WasmiModule {
    template_store: Store<FakeWasmiInstanceEnv>,
    template_instance: Instance,
    code_size_bytes: usize,
}

A WasmiModule defines a parsed WASM module “template” Instance (with imports already defined) and Store, which keeps user data. “Template” (Store, Instance) tuple are cached together, and never to be invoked. Upon instantiation Instance and Store are cloned, so the state is not shared between instances. It is safe to clone an Instance and a Store, since they don’t use pointers, but Arena allocator. Instance is owned by Store, it is basically some offset within Store’s vector of Instances. So after clone we receive the same Store, where we are able to set different data, more specifically a runtime_ptr. Also, it is correctly Send + Sync (under the assumption that the data in the Store is set to a valid value upon invocation , because this is the thing which is cached in the ScryptoInterpreter caches.

Fields

template_store: Store<FakeWasmiInstanceEnv>

template_instance: Instance

code_size_bytes: usize

Implementations

impl WasmiModule

pub fn new(code: &[u8]) -> Result<Self, WasmiInstantiationError>

pub fn host_funcs_set( module: &Module, store: &mut Store<WasmiInstanceEnv> ) -> Result<InstancePre, Error>

fn instantiate(&self) -> WasmiInstance