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Run LSP response deserialization outside of main thread

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Improves latency when big inlay hints LSP responses for ~8k line files

Co-Authored-By: Antonio Scandurra <antonio@zed.dev>
This commit is contained in:
Kirill Bulatov 2023-06-21 13:20:42 +03:00
parent 5860b7b143
commit bd97767c72
1 changed files with 18 additions and 9 deletions
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17
crates/lsp/src/lsp.rs
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@ -33,7 +33,7 @@ const JSON_RPC_VERSION: &str = "2.0";
const CONTENT_LEN_HEADER: &str = "Content-Length: ";
type NotificationHandler = Box<dyn Send + FnMut(Option<usize>, &str, AsyncAppContext)>;
type ResponseHandler = Box<dyn Send + FnOnce(Result<&str, Error>)>;
type ResponseHandler = Box<dyn Send + FnOnce(Result<String, Error>)>;
type IoHandler = Box<dyn Send + FnMut(bool, &str)>;
pub struct LanguageServer {
@ -302,9 +302,9 @@ impl LanguageServer {
if let Some(error) = error {
handler(Err(error));
} else if let Some(result) = result {
handler(Ok(result.get()));
handler(Ok(result.get().into()));
} else {
handler(Ok("null"));
handler(Ok("null".into()));
}
}
} else {
@ -457,11 +457,13 @@ impl LanguageServer {
let response_handlers = self.response_handlers.clone();
let next_id = AtomicUsize::new(self.next_id.load(SeqCst));
let outbound_tx = self.outbound_tx.clone();
let executor = self.executor.clone();
let mut output_done = self.output_done_rx.lock().take().unwrap();
let shutdown_request = Self::request_internal::<request::Shutdown>(
&next_id,
&response_handlers,
&outbound_tx,
&executor,
(),
);
let exit = Self::notify_internal::<notification::Exit>(&outbound_tx, ());
@ -658,6 +660,7 @@ impl LanguageServer {
&self.next_id,
&self.response_handlers,
&self.outbound_tx,
&self.executor,
params,
)
}
@ -666,6 +669,7 @@ impl LanguageServer {
next_id: &AtomicUsize,
response_handlers: &Mutex<Option<HashMap<usize, ResponseHandler>>>,
outbound_tx: &channel::Sender<String>,
executor: &Arc<executor::Background>,
params: T::Params,
) -> impl 'static + Future<Output = Result<T::Result>>
where
@ -686,15 +690,20 @@ impl LanguageServer {
.as_mut()
.ok_or_else(|| anyhow!("server shut down"))
.map(|handlers| {
let executor = executor.clone();
handlers.insert(
id,
Box::new(move |result| {
executor
.spawn(async move {
let response = match result {
Ok(response) => serde_json::from_str(response)
Ok(response) => serde_json::from_str(&response)
.context("failed to deserialize response"),
Err(error) => Err(anyhow!("{}", error.message)),
};
let _ = tx.send(response);
})
.detach();
}),
);
});