Allow LSP to process multiple messages per poll

(cherry picked from commit e2485044a1b33628e6149d4f930b6fe065743c9d)

modules/gdscript/language_server/gdscript_language_protocol.cpp

@@ -105,7 +105,7 @@ Error GDScriptLanguageProtocol::LSPeer::handle_data() {
 
 Error GDScriptLanguageProtocol::LSPeer::send_data() {
 	int sent = 0;
-	if (!res_queue.is_empty()) {
+	while (!res_queue.is_empty()) {
 		CharString c_res = res_queue[0];
 		if (res_sent < c_res.size()) {
 			Error err = connection->put_partial_data((const uint8_t *)c_res.get_data() + res_sent, c_res.size() - res_sent - 1, sent);
@@ -229,7 +229,9 @@ void GDScriptLanguageProtocol::initialized(const Variant &p_params) {
 	notify_client("gdscript/capabilities", capabilities.to_json());
 }
 
-void GDScriptLanguageProtocol::poll() {
+void GDScriptLanguageProtocol::poll(int p_limit_usec) {
+	uint64_t target_ticks = OS::get_singleton()->get_ticks_usec() + p_limit_usec;
+
 	if (server->is_connection_available()) {
 		on_client_connected();
 	}
@@ -244,16 +246,22 @@ void GDScriptLanguageProtocol::poll() {
 			E = clients.begin();
 			continue;
 		} else {
-			if (peer->connection->get_available_bytes() > 0) {
+			Error err = OK;
+			while (peer->connection->get_available_bytes() > 0) {
 				latest_client_id = E->key;
-				Error err = peer->handle_data();
-				if (err != OK && err != ERR_BUSY) {
-					on_client_disconnected(E->key);
-					E = clients.begin();
-					continue;
+				err = peer->handle_data();
+				if (err != OK || OS::get_singleton()->get_ticks_usec() >= target_ticks) {
+					break;
 				}
 			}
-			Error err = peer->send_data();
+
+			if (err != OK && err != ERR_BUSY) {
+				on_client_disconnected(E->key);
+				E = clients.begin();
+				continue;
+			}
+
+			err = peer->send_data();
 			if (err != OK && err != ERR_BUSY) {
 				on_client_disconnected(E->key);
 				E = clients.begin();

modules/gdscript/language_server/gdscript_language_protocol.h

@@ -105,7 +105,7 @@ public:
 	_FORCE_INLINE_ Ref<GDScriptTextDocument> get_text_document() { return text_document; }
 	_FORCE_INLINE_ bool is_initialized() const { return _initialized; }
 
-	void poll();
+	void poll(int p_limit_usec);
 	Error start(int p_port, const IPAddress &p_bind_ip);
 	void stop();
 

modules/gdscript/language_server/gdscript_language_server.cpp

@@ -42,6 +42,7 @@ GDScriptLanguageServer::GDScriptLanguageServer() {
 	_EDITOR_DEF("network/language_server/enable_smart_resolve", true);
 	_EDITOR_DEF("network/language_server/show_native_symbols_in_editor", false);
 	_EDITOR_DEF("network/language_server/use_thread", use_thread);
+	_EDITOR_DEF("network/language_server/poll_limit_usec", poll_limit_usec);
 }
 
 void GDScriptLanguageServer::_notification(int p_what) {
@@ -56,7 +57,7 @@ void GDScriptLanguageServer::_notification(int p_what) {
 
 		case NOTIFICATION_INTERNAL_PROCESS: {
 			if (started && !use_thread) {
-				protocol.poll();
+				protocol.poll(poll_limit_usec);
 			}
 		} break;
 
@@ -64,7 +65,8 @@ void GDScriptLanguageServer::_notification(int p_what) {
 			String remote_host = String(_EDITOR_GET("network/language_server/remote_host"));
 			int remote_port = (int)_EDITOR_GET("network/language_server/remote_port");
 			bool remote_use_thread = (bool)_EDITOR_GET("network/language_server/use_thread");
-			if (remote_host != host || remote_port != port || remote_use_thread != use_thread) {
+			int remote_poll_limit = (int)_EDITOR_GET("network/language_server/poll_limit_usec");
+			if (remote_host != host || remote_port != port || remote_use_thread != use_thread || remote_poll_limit != poll_limit_usec) {
 				stop();
 				start();
 			}
@@ -77,7 +79,7 @@ void GDScriptLanguageServer::thread_main(void *p_userdata) {
 	GDScriptLanguageServer *self = static_cast<GDScriptLanguageServer *>(p_userdata);
 	while (self->thread_running) {
 		// Poll 20 times per second
-		self->protocol.poll();
+		self->protocol.poll(self->poll_limit_usec);
 		OS::get_singleton()->delay_usec(50000);
 	}
 }
@@ -86,6 +88,7 @@ void GDScriptLanguageServer::start() {
 	host = String(_EDITOR_GET("network/language_server/remote_host"));
 	port = (int)_EDITOR_GET("network/language_server/remote_port");
 	use_thread = (bool)_EDITOR_GET("network/language_server/use_thread");
+	poll_limit_usec = (int)_EDITOR_GET("network/language_server/poll_limit_usec");
 	if (protocol.start(port, IPAddress(host)) == OK) {
 		EditorNode::get_log()->add_message("--- GDScript language server started ---", EditorLog::MSG_TYPE_EDITOR);
 		if (use_thread) {

modules/gdscript/language_server/gdscript_language_server.h

@@ -47,6 +47,7 @@ class GDScriptLanguageServer : public EditorPlugin {
 	bool use_thread = false;
 	String host = "127.0.0.1";
 	int port = 6005;
+	int poll_limit_usec = 100000;
 	static void thread_main(void *p_userdata);
 
 private: