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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use crate::web_worker::WebWorkerHandle;
use crate::web_worker::WorkerEvent;
use deno_core::error::null_opbuf;
use deno_core::futures::channel::mpsc;
use deno_core::op_sync;
use deno_core::Extension;
use deno_core::ZeroCopyBuf;
pub fn init() -> Extension {
Extension::builder()
.ops(vec![
(
"op_worker_post_message",
op_sync(move |state, _args: (), buf: Option<ZeroCopyBuf>| {
let buf = buf.ok_or_else(null_opbuf)?;
let msg_buf: Box<[u8]> = (*buf).into();
let mut sender = state.borrow::<mpsc::Sender<WorkerEvent>>().clone();
sender
.try_send(WorkerEvent::Message(msg_buf))
.expect("Failed to post message to host");
Ok(())
}),
),
// Notify host that guest worker closes.
(
"op_worker_close",
op_sync(move |state, _: (), _: ()| {
// Notify parent that we're finished
let mut sender = state.borrow::<mpsc::Sender<WorkerEvent>>().clone();
sender.close_channel();
// Terminate execution of current worker
let handle = state.borrow::<WebWorkerHandle>();
handle.terminate();
Ok(())
}),
),
])
.build()
}
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