Function wasmtime_wasi::add_to_linker_async
source · pub fn add_to_linker_async<T: WasiView>(linker: &mut Linker<T>) -> Result<()>
Expand description
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 }
}