event: initialize maps with known size (#27233)

event: initialize maps with known size
2023-05-09 13:29:32 -06:00 · 2023-05-09 13:29:32 -06:00 · 0fb1be0930
parent c62da24dce
commit 0fb1be0930
1 changed files with 1 additions and 1 deletions
--- a/event/event.go
+++ b/event/event.go
@ -61,7 +61,7 @@ func (mux *TypeMux) Subscribe(types ...interface{}) *TypeMuxSubscription {
 		close(sub.postC)
 	} else {
 		if mux.subm == nil {
-			mux.subm = make(map[reflect.Type][]*TypeMuxSubscription)
+			mux.subm = make(map[reflect.Type][]*TypeMuxSubscription, len(types))
 		}
 		for _, t := range types {
 			rtyp := reflect.TypeOf(t)