1 files changed, 48 insertions, 0 deletions
diff --git a/qpid/cpp/include/qmf/Notifiable.h b/qpid/cpp/include/qmf/Notifiable.h
new file mode 100644
index 0000000000..43f546d9cd
--- /dev/null
+++ b/qpid/cpp/include/qmf/Notifiable.h
@@ -0,0 +1,48 @@
+#ifndef _QmfNotifiable_
+#define _QmfNotifiable_
+
+/*
+ * 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 "qmf/QmfImportExport.h"
+
+namespace qmf {
+
+    /**
+     * The Notifiable class is an interface that may be used in the application.  It provides
+     * a single callback (notify) that is invoked when the agent or console has events to be
+     * handled by the application.
+     *
+     * This interface should only be used in an application that has more event drivers than
+     * just a single QMF interface.  For example, an application that already uses select or
+     * poll to control execution can use the notify callback to awaken the select/poll call.
+     *
+     * No QMF operations should be performed from the notify callback.  It should only be used
+     * to awaken an application thread that will then perform QMF operations.
+     *
+     * \ingroup qmfapi
+     */
+    class Notifiable {
+    public:
+        QMF_EXTERN virtual ~Notifiable();
+        virtual void notify() = 0;
+    };
+}
+
+#endif