From 4db4f909174420904d48a9712e337b697d372ac3 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Mon, 17 Mar 2014 17:29:33 -0700
Subject: use a latch to avoid busy loops

---
 activerecord/test/cases/connection_pool_test.rb | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index 6300011f4a..c0d5e3707c 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -1,4 +1,5 @@
 require "cases/helper"
+require 'active_support/concurrency/latch'
 
 module ActiveRecord
   module ConnectionAdapters
@@ -133,15 +134,15 @@ module ActiveRecord
       end
 
       def test_reap_inactive
-        ready = false
+        ready = ActiveSupport::Concurrency::Latch.new
         @pool.checkout
         child = Thread.new do
           @pool.checkout
           @pool.checkout
-          ready = true
+          ready.release
           Thread.stop
         end
-        Thread.pass until ready
+        ready.await
 
         assert_equal 3, active_connections(@pool).size
 
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