From 1a74fa4b04da04bd2bb33103dd3cf431438df38e Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 14 Dec 2017 15:09:35 +0000
Subject: add tag v2_2_9

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v2_2_9@61257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ruby_2_2/benchmark/bm_vm_thread_mutex1.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 ruby_2_2/benchmark/bm_vm_thread_mutex1.rb

(limited to 'ruby_2_2/benchmark/bm_vm_thread_mutex1.rb')

diff --git a/ruby_2_2/benchmark/bm_vm_thread_mutex1.rb b/ruby_2_2/benchmark/bm_vm_thread_mutex1.rb
new file mode 100644
index 0000000000..5c9f85dfb7
--- /dev/null
+++ b/ruby_2_2/benchmark/bm_vm_thread_mutex1.rb
@@ -0,0 +1,21 @@
+# one thread, one mutex (no contention)
+
+require 'thread'
+m = Mutex.new
+r = 0
+max = 2000
+lmax = max * max
+(1..1).map{
+  Thread.new{
+    i = 0
+    while i<lmax
+      i += 1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max
-- 
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