From c31e10ec004074aabb9d2a40735fdd0911385c65 Mon Sep 17 00:00:00 2001
From: Vladimir Bauer <vbauerster@gmail.com>
Date: Sat, 17 Aug 2024 21:36:50 +0500
Subject: [PATCH] run shutdownListeners concurrently

---
 bar.go | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/bar.go b/bar.go
index 489b6cad..e3901be7 100644
--- a/bar.go
+++ b/bar.go
@@ -424,13 +424,17 @@ func (b *Bar) serve(bs *bState) {
 		case op := <-b.operateState:
 			op(bs)
 		case <-b.ctx.Done():
-			shutdownListeners := bs.shutdownListeners
+			for _, d := range bs.shutdownListeners {
+				b.container.bwg.Add(1)
+				d := d
+				go func() {
+					d.OnShutdown()
+					b.container.bwg.Done()
+				}()
+			}
 			bs.aborted = !bs.completed()
 			b.bs = bs
 			close(b.bsOk)
-			for _, d := range shutdownListeners {
-				d.OnShutdown()
-			}
 			b.container.bwg.Done()
 			return
 		}