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diff --git a/qpid/cpp/src/qpid/broker/QueueListeners.h b/qpid/cpp/src/qpid/broker/QueueListeners.h
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+++ b/qpid/cpp/src/qpid/broker/QueueListeners.h
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+#ifndef QPID_BROKER_QUEUELISTENERS_H
+#define QPID_BROKER_QUEUELISTENERS_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+#include "qpid/broker/Consumer.h"
+#include <deque>
+
+namespace qpid {
+namespace broker {
+
+/**
+ * Track and notify components that wish to be notified of messages
+ * that become available on a queue.
+ *
+ * None of the methods defined here are protected by locking. However
+ * the populate method allows a 'snapshot' to be taken of the
+ * listeners to be notified. NotificationSet::notify() may then be
+ * called outside of any lock that protects the QueueListeners
+ * instance from concurrent access.
+ */
+class QueueListeners
+{
+  public:
+    typedef std::deque<Consumer::shared_ptr> Listeners;
+
+    class NotificationSet
+    {
+      public:
+        void notify();
+      private:
+        Listeners browsers;
+        Consumer::shared_ptr consumer;
+      friend class QueueListeners;
+    };
+
+    class ListenerSet
+    {
+      public:
+        void notifyAll();
+      private:
+        Listeners listeners;
+      friend class QueueListeners;
+    };
+
+    void addListener(Consumer::shared_ptr);
+    void removeListener(Consumer::shared_ptr);
+    void populate(NotificationSet&);
+    void snapshot(ListenerSet&);
+    void notifyAll();
+
+    template <class F> void eachListener(F f) {
+        std::for_each(browsers.begin(), browsers.end(), f);
+        std::for_each(consumers.begin(), consumers.end(), f);
+    }
+
+  private:
+    Listeners consumers;
+    Listeners browsers;
+
+    void add(Listeners&, Consumer::shared_ptr);
+    void remove(Listeners&, Consumer::shared_ptr);
+
+};
+}} // namespace qpid::broker
+
+#endif  /*!QPID_BROKER_QUEUELISTENERS_H*/