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-rw-r--r--benchmark/bm_vm_thread_mutex3.rb20
1 files changed, 20 insertions, 0 deletions
diff --git a/benchmark/bm_vm_thread_mutex3.rb b/benchmark/bm_vm_thread_mutex3.rb
new file mode 100644
index 0000000000..ae02e20ea0
--- /dev/null
+++ b/benchmark/bm_vm_thread_mutex3.rb
@@ -0,0 +1,20 @@
+# 1000 threads, one mutex
+
+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