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diff --git a/qpid/cpp/src/qpid/cluster/exp/LockedMap.h b/qpid/cpp/src/qpid/cluster/exp/LockedMap.h
new file mode 100644
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+++ b/qpid/cpp/src/qpid/cluster/exp/LockedMap.h
@@ -0,0 +1,73 @@
+#ifndef QPID_CLUSTER_LOCKEDMAP_H
+#define QPID_CLUSTER_LOCKEDMAP_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/sys/Mutex.h"
+#include <map>
+
+namespace qpid {
+namespace cluster {
+
+/**
+ * A reader-writer locked thread safe map.
+ */
+template <class Key, class Value>
+class LockedMap
+{
+  public:
+    /** Get value associated with key, returns Value() if none. */
+    Value get(const Key& key) const {
+        sys::RWlock::ScopedRlock r(lock);
+        typename Map::const_iterator i = map.find(key);
+        if (i == map.end()) return Value();
+        else return i->second;
+    }
+
+    /** Associate value with key, overwriting any previous value for key. */
+    void put(const Key& key, const Value& value) {
+        sys::RWlock::ScopedWlock w(lock);
+        map[key] = value;
+    }
+
+    /** Associate value with key if there is not already a value associated with key.
+     * Returns true if the value was added.
+     */
+    bool add(const Key& key, const Value& value) {
+        sys::RWlock::ScopedWlock w(lock);
+        return map.insert(key, value).second;
+    }
+
+    /** Erase the value associated with key if any. Return true if a value was erased. */
+    bool erase(const Key& key) {
+        sys::RWlock::ScopedWlock w(lock);
+        return map.erase(key);
+    }
+
+  private:
+    typedef std::map<Key, Value> Map;
+    Map map;
+    mutable sys::RWlock lock;
+};
+}} // namespace qpid::cluster
+
+#endif  /*!QPID_CLUSTER_LOCKEDMAP_H*/