diff --git a/regcompiler.rb b/regcompiler.rb
index f0598ce..56fd1b4 100755
--- a/regcompiler.rb
+++ b/regcompiler.rb
@@ -2112,6 +2112,10 @@ def wait
       def signal
         enq nil
       end
+
+      def signalled?
+        size>0
+      end
     end
         
     def initialize progress, *regs