1 files changed, 27 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/subscription_adapter/async.rb b/actioncable/lib/action_cable/subscription_adapter/async.rb
new file mode 100644
index 0000000000..10b3ac8cd8
--- /dev/null
+++ b/actioncable/lib/action_cable/subscription_adapter/async.rb
@@ -0,0 +1,27 @@
+require 'action_cable/subscription_adapter/inline'
+
+module ActionCable
+  module SubscriptionAdapter
+    class Async < Inline # :nodoc:
+      private
+        def new_subscriber_map
+          AsyncSubscriberMap.new(server.event_loop)
+        end
+
+        class AsyncSubscriberMap < SubscriberMap
+          def initialize(event_loop)
+            @event_loop = event_loop
+            super()
+          end
+
+          def add_subscriber(*)
+            @event_loop.post { super }
+          end
+
+          def invoke_callback(*)
+            @event_loop.post { super }
+          end
+        end
+    end
+  end
+end