Function add_to_linker_async

pub fn add_to_linker_async<T: WasiView>(linker: &mut Linker<T>) -> Result<()>

Add all WASI interfaces from this crate into the linker provided.

This function will add the async variant of all interfaces into the Linker provided. By async this means that this function is only compatible with Config::async_support(true). For embeddings with async support disabled see add_to_linker_sync instead.

This function will add all interfaces implemented by this crate to the Linker, which corresponds to the wasi:cli/imports world supported by this crate.

Example

use wasmtime::{Engine, Result, Store, Config};
use wasmtime::component::{ResourceTable, Linker};
use wasmtime_wasi::{WasiCtx, WasiView, WasiCtxBuilder};

fn main() -> Result<()> {
    let mut config = Config::new();
    config.async_support(true);
    let engine = Engine::new(&config)?;

    let mut linker = Linker::<MyState>::new(&engine);
    wasmtime_wasi::add_to_linker_async(&mut linker)?;
    // ... add any further functionality to `linker` if desired ...

    let mut builder = WasiCtxBuilder::new();

    // ... configure `builder` more to add env vars, args, etc ...

    let mut store = Store::new(
        &engine,
        MyState {
            ctx: builder.build(),
            table: ResourceTable::new(),
        },
    );

    // ... use `linker` to instantiate within `store` ...

    Ok(())
}

struct MyState {
    ctx: WasiCtx,
    table: ResourceTable,
}

impl WasiView for MyState {
    fn ctx(&mut self) -> &mut WasiCtx { &mut self.ctx }
    fn table(&mut self) -> &mut ResourceTable { &mut self.table }
}