From 843c43c97ac725533f9da90a17d51de08d1243f4 Mon Sep 17 00:00:00 2001
From: "Ben Sheldon [he/him]" <bensheldon@gmail.com>
Date: Mon, 20 Oct 2025 03:10:43 -0700
Subject: [PATCH] Replace ThreadingHelper wait loop with functional
 CyclicBarrier (#36508)

---
 spec/support/threading_helpers.rb | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/spec/support/threading_helpers.rb b/spec/support/threading_helpers.rb
index edf45822ca..4ca8c9865a 100644
--- a/spec/support/threading_helpers.rb
+++ b/spec/support/threading_helpers.rb
@@ -1,17 +1,18 @@
 # frozen_string_literal: true
 
+require 'concurrent/atomic/cyclic_barrier'
+
 module ThreadingHelpers
   def multi_threaded_execution(thread_count)
-    wait_for_start = true
+    barrier = Concurrent::CyclicBarrier.new(thread_count)
 
     threads = Array.new(thread_count) do
       Thread.new do
-        true while wait_for_start
+        barrier.wait
         yield
       end
     end
 
-    wait_for_start = false
     threads.each(&:join)
   end
 end