1 files changed, 7 insertions, 1 deletions
diff --git a/cpp/src/qpid/client/BlockingQueue.h b/cpp/src/qpid/client/BlockingQueue.h
index 7081b76b68..a9d8ec2857 100644
--- a/cpp/src/qpid/client/BlockingQueue.h
+++ b/cpp/src/qpid/client/BlockingQueue.h
@@ -62,7 +62,7 @@ public:
         }
     }
 
-    void push(T t)
+    void push(const T& t)
     {
         sys::Monitor::ScopedLock l(lock);
         bool wasEmpty = queue.empty();
@@ -78,6 +78,12 @@ public:
         closed = true;
         lock.notifyAll();
     }
+    
+    bool empty()
+    {
+        sys::Monitor::ScopedLock l(lock);
+        return queue.empty();
+    }
 };
 
 }}