added QueuedThreadPool.getQueueSize()

jetty-util/src/main/java/org/eclipse/jetty/util/thread/QueuedThreadPool.java

@@ -321,6 +321,17 @@ public class QueuedThreadPool extends AbstractLifeCycle implements SizedThreadPo
     {
         return _priority;
     }
+    
+    /**
+     * Get the size of the job queue.
+     * 
+     * @return Number of jobs queued waiting for a thread
+     */
+    @ManagedAttribute("Size of the job queue")
+    public int getQueueSize()
+    {
+        return _jobs.size();
+    }
 
     /**
      * Delegated to the named or anonymous Pool.