Struct AsyncRuntime 

pub struct AsyncRuntime { /* private fields */ }

An async-enabled package runtime.

Use this when you need to register async host functions or call WASM functions asynchronously.

Example

let runtime = AsyncRuntime::new();
let module = runtime.load_module(&wasm_bytes)?;

let instance = module.instantiate_with_host_async(MyState::new(), |builder| {
    builder.interface("theater:runtime")?
        .func_async("fetch", |ctx, url: String| {
            Box::pin(async move {
                // async operation here
                fetch_url(&url).await
            })
        })?;
    Ok(())
}).await?;

let result = instance.call_with_value_async("process", &input, 0).await?;

Implementations

impl AsyncRuntime

pub fn new() -> Self

Create a new async-enabled runtime.

pub fn load_module( &self, wasm_bytes: &[u8], ) -> Result<AsyncCompiledModule<'_>, RuntimeError>

Load a WASM module from bytes.

pub fn engine(&self) -> &Engine

Get a reference to the engine.

Trait Implementations

impl Default for AsyncRuntime

fn default() -> Self

Returns the “default value” for a type.