You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
1.2 KiB
33 lines
1.2 KiB
//! Example of instantiating two modules which link to each other.
|
|
|
|
// You can execute this example with `cargo run --example linking`
|
|
|
|
use anyhow::Result;
|
|
use wasmtime::*;
|
|
use wasmtime_wasi::{Wasi, WasiCtx};
|
|
|
|
fn main() -> Result<()> {
|
|
let store = Store::default();
|
|
|
|
// First set up our linker which is going to be linking modules together. We
|
|
// want our linker to have wasi available, so we set that up here as well.
|
|
let mut linker = Linker::new(&store);
|
|
let wasi = Wasi::new(&store, WasiCtx::new(std::env::args())?);
|
|
wasi.add_to_linker(&mut linker)?;
|
|
|
|
// Load and compile our two modules
|
|
let linking1 = Module::from_file(&store, "examples/linking1.wat")?;
|
|
let linking2 = Module::from_file(&store, "examples/linking2.wat")?;
|
|
|
|
// Instantiate our first module which only uses WASI, then register that
|
|
// instance with the linker since the next linking will use it.
|
|
let linking2 = linker.instantiate(&linking2)?;
|
|
linker.instance("linking2", &linking2)?;
|
|
|
|
// And with that we can perform the final link and the execute the module.
|
|
let linking1 = linker.instantiate(&linking1)?;
|
|
let run = linking1.get_export("run").and_then(|e| e.func()).unwrap();
|
|
let run = run.get0::<()>()?;
|
|
run()?;
|
|
Ok(())
|
|
}
|
|
|