From aa6e98139c8e1ea442fb2182341aaa08ff55b529 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 14 May 2013 11:27:23 +0000
Subject: add tag v1_9_3_426

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_3_426@40733 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ruby_1_9_3/benchmark/bm_vm_thread_mutex1.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 ruby_1_9_3/benchmark/bm_vm_thread_mutex1.rb

(limited to 'ruby_1_9_3/benchmark/bm_vm_thread_mutex1.rb')

diff --git a/ruby_1_9_3/benchmark/bm_vm_thread_mutex1.rb b/ruby_1_9_3/benchmark/bm_vm_thread_mutex1.rb
new file mode 100644
index 0000000000..588506e87c
--- /dev/null
+++ b/ruby_1_9_3/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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