Added safe global counter example

mhakeem · May 30, 2014 · e7ef1dd · e7ef1dd
1 parent b8b9c38
commit e7ef1dd
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/safe_global_counter.rb b/safe_global_counter.rb
@@ -0,0 +1,17 @@
+require "thread"
+
+class Counter
+  def initialize
+    @counter = 0
+    @mutex = Mutex.new
+  end
+
+  def incerement
+    @mutex.synchronize do
+      @counter += 1
+    end
+  end
+
+end
+
+$counter = Counter.new