added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 18 insertions, 0 deletions

diff --git a/trunk/benchmark/bm_vm3_thread_mutex.rb b/trunk/benchmark/bm_vm3_thread_mutex.rb
new file mode 100644
index 0000000000..649f1fddac
--- /dev/null
+++ b/trunk/benchmark/bm_vm3_thread_mutex.rb
@@ -0,0 +1,18 @@
+require 'thread'
+m = Mutex.new
+r = 0
+max = 1000
+(1..max).map{
+  Thread.new{
+    i=0
+    while i<max
+      i+=1
+      m.synchronize{
+        r += 1
+      }
+    end
+  }
+}.each{|e|
+  e.join
+}
+raise r.to_s if r != max * max