Added method to get the number of tasks on the queue.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1580 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/util/SerialExecutor.java

@@ -72,6 +72,15 @@ public class SerialExecutor
         }
     }
 
+    /**
+     * Returns the number of ExecutorTasks that are currently waiting on
+     * the queue.
+     */
+    public int getQueueSize ()
+    {
+        return _queue.size();
+    }
+
     /**
      * Execute the next task, if applicable.
      */