Attempt to fix race #1

1 files changed, 7 insertions, 2 deletions

diff --git a/util/events.go b/util/events.go
index 259c7ddb..dbb5990b 100755
--- a/util/events.go
+++ b/util/events.go
@@ -1,12 +1,15 @@
 package util
 
 import (
+	"sync"
+
 	"github.com/spiral/roadrunner/v2/interfaces/events"
 )
 
 // EventHandler helps to broadcast events to multiple listeners.
 type EventHandler struct {
 	listeners []events.EventListener
+	sync.RWMutex
 }
 
 func NewEventsHandler() events.Handler {
@@ -20,12 +23,14 @@ func (eb *EventHandler) NumListeners() int {
 
 // AddListener registers new event listener.
 func (eb *EventHandler) AddListener(listener events.EventListener) {
+	eb.Lock()
+	defer eb.Unlock()
 	eb.listeners = append(eb.listeners, listener)
 }
 
 // Push broadcast events across all event listeners.
 func (eb *EventHandler) Push(e interface{}) {
-	for _, listener := range eb.listeners {
-		listener(e)
+	for k := range eb.listeners {
+		eb.listeners[k](e)
 	}
 }