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diff --git a/qpid/cpp/src/qpid/cluster/Dispatchable.h b/qpid/cpp/src/qpid/cluster/Dispatchable.h
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+++ b/qpid/cpp/src/qpid/cluster/Dispatchable.h
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+#ifndef QPID_CLUSTER_DISPATCHABLE_H
+#define QPID_CLUSTER_DISPATCHABLE_H
+
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.
+ *
+ */
+
+namespace qpid {
+namespace cluster {
+
+/**
+ * Interface for classes that have some "events" that need dispatching
+ * in a thread.
+ */
+class Dispatchable 
+{
+  public:
+    virtual ~Dispatchable() {}
+
+    /** Dispatch one event in current thread. */
+    virtual void dispatchOne() = 0;
+    /** Dispatch all available events, don't block. */
+    virtual void dispatchAll() = 0;
+    /** Blocking loop to dispatch cluster events */
+    virtual void dispatchBlocking() = 0;
+
+    /** Wait for at least one event, then dispatch all available events.
+     * Don't block.  Useful for tests.
+     */
+    virtual void dispatchSome() { dispatchOne(); dispatchAll(); }    
+
+};
+
+}} // namespace qpid::cluster
+
+
+
+#endif  /*!QPID_CLUSTER_DISPATCHABLE_H*/