Add bin and edit workflow

bin/gems/concurrent-ruby-1.3.5/lib/concurrent-ruby/concurrent/synchronization/abstract_object.rb

@@ -0,0 +1,22 @@
+module Concurrent
+  module Synchronization
+
+    # @!visibility private
+    # @!macro internal_implementation_note
+    class AbstractObject
+      def initialize
+        # nothing to do
+      end
+
+      # @!visibility private
+      # @abstract
+      def full_memory_barrier
+        raise NotImplementedError
+      end
+
+      def self.attr_volatile(*names)
+        raise NotImplementedError
+      end
+    end
+  end
+end