From 7caf7854a64a12b157706d5ccc37a424582c1d6d Mon Sep 17 00:00:00 2001
From: Lea Anthony <lea.anthony@gmail.com>
Date: Tue, 11 Jul 2023 23:23:57 +1000
Subject: [PATCH] [v2] Test locking event dispatch

---
 v2/internal/frontend/runtime/events.go | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/v2/internal/frontend/runtime/events.go b/v2/internal/frontend/runtime/events.go
index ac9d6299c..e6aa721ab 100644
--- a/v2/internal/frontend/runtime/events.go
+++ b/v2/internal/frontend/runtime/events.go
@@ -32,6 +32,8 @@ type Events struct {
 }
 
 func (e *Events) Notify(sender frontend.Frontend, name string, data ...interface{}) {
+	e.notifyLock.Lock()
+	defer e.notifyLock.Unlock()
 	e.notifyBackend(name, data...)
 	for _, thisFrontend := range e.frontend {
 		if thisFrontend == sender {
@@ -54,6 +56,8 @@ func (e *Events) Once(eventName string, callback func(...interface{})) func() {
 }
 
 func (e *Events) Emit(eventName string, data ...interface{}) {
+	e.notifyLock.Lock()
+	defer e.notifyLock.Unlock()
 	e.notifyBackend(eventName, data...)
 	for _, thisFrontend := range e.frontend {
 		thisFrontend.Notify(eventName, data...)
@@ -116,9 +120,6 @@ func (e *Events) unRegisterListener(eventName string) {
 
 // Notify backend for the given event name
 func (e *Events) notifyBackend(eventName string, data ...interface{}) {
-	e.notifyLock.Lock()
-	defer e.notifyLock.Unlock()
-
 	// Get list of event listeners
 	listeners := e.listeners[eventName]
 	if listeners == nil {