From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/benchmark/bm_vm_thread_mutex2.rb | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 jni/ruby/benchmark/bm_vm_thread_mutex2.rb

(limited to 'jni/ruby/benchmark/bm_vm_thread_mutex2.rb')

diff --git a/jni/ruby/benchmark/bm_vm_thread_mutex2.rb b/jni/ruby/benchmark/bm_vm_thread_mutex2.rb
new file mode 100644
index 0000000..10de590
--- /dev/null
+++ b/jni/ruby/benchmark/bm_vm_thread_mutex2.rb
@@ -0,0 +1,21 @@
+# two threads, one mutex
+
+require 'thread'
+m = Mutex.new
+r = 0
+max = 2000
+lmax = (max * max)/2
+(1..2).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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