index libraies off the main thread

crates/server/src/main_loop/mod.rs

@@ -10,7 +10,7 @@ use threadpool::ThreadPool;
 use serde::{Serialize, de::DeserializeOwned};
 use crossbeam_channel::{bounded, Sender, Receiver};
 use languageserver_types::{NumberOrString};
-use libanalysis::{FileId, JobHandle, JobToken};
+use libanalysis::{FileId, JobHandle, JobToken, LibraryData};
 use gen_lsp_server::{
     RawRequest, RawNotification, RawMessage, RawResponse, ErrorCode,
     handle_shutdown,
@@ -94,6 +94,7 @@ fn main_loop_inner(
     pending_requests: &mut HashMap<u64, JobHandle>,
     subs: &mut Subscriptions,
 ) -> Result<()> {
+    let (libdata_sender, libdata_receiver) = bounded(1024);
     ws_sender.send(ws_root.clone());
     fs_sender.send(ws_root.clone());
     loop {
@@ -103,6 +104,7 @@ fn main_loop_inner(
             Task(Task),
             Fs(PathBuf, Vec<FileEvent>),
             Ws(Result<CargoWorkspace>),
+            Lib(LibraryData),
         }
         trace!("selecting");
         let event = select! {
@@ -119,6 +121,7 @@ fn main_loop_inner(
                 None => bail!("workspace watcher died"),
                 Some(ws) => Event::Ws(ws),
             }
+            recv(libdata_receiver, data) => Event::Lib(data.unwrap())
         };
         trace!("selected {:?}", event);
         let mut state_changed = false;
@@ -129,7 +132,12 @@ fn main_loop_inner(
                 if root == ws_root {
                     state.apply_fs_changes(events);
                 } else {
-                    state.add_library(events);
+                    let files = state.events_to_files(events);
+                    let sender = libdata_sender.clone();
+                    pool.execute(move || {
+                        let data = LibraryData::prepare(files);
+                        sender.send(data);
+                    });
                 }
                 state_changed = true;
             }
@@ -152,6 +160,9 @@ fn main_loop_inner(
                     Err(e) => warn!("loading workspace failed: {}", e),
                 }
             }
+            Event::Lib(lib) => {
+                state.add_lib(lib);
+            }
             Event::Msg(msg) => {
                 match msg {
                     RawMessage::Request(req) => {