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diff --git a/qpid/cpp/src/qpid/sys/StateMonitor.h b/qpid/cpp/src/qpid/sys/StateMonitor.h
new file mode 100644
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+++ b/qpid/cpp/src/qpid/sys/StateMonitor.h
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+#ifndef QPID_SYS_STATEMONITOR_H
+#define QPID_SYS_STATEMONITOR_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/Waitable.h"
+
+#include <bitset>
+
+namespace qpid {
+namespace sys {
+
+/**
+ * A monitor with an enum state value.
+ *
+ *@param Enum: enum type to use for states.
+ *@param EnumMax: Highest enum value.
+ */
+template <class Enum, size_t MaxEnum>
+class StateMonitor : public Waitable
+{
+  public:
+    struct Set : public std::bitset<MaxEnum + 1> {
+        Set() {}
+        Set(Enum s) { set(s); }
+        Set(Enum s, Enum t) { std::bitset<MaxEnum + 1>::set(s).set(t); }
+        Set(Enum s, Enum t, Enum u) { std::bitset<MaxEnum + 1>::set(s).set(t).set(u); }
+        Set(Enum s, Enum t, Enum u, Enum v) { std::bitset<MaxEnum + 1>::set(s).set(t).set(u).set(v); }
+    };
+
+
+    StateMonitor(Enum initial) { state=initial; }
+
+    /** @pre Caller holds a ScopedLock. */
+    void set(Enum s) { state=s; notifyAll(); }
+    /** @pre Caller holds a ScopedLock. */
+    StateMonitor& operator=(Enum s) { set(s); return *this; }
+
+    /** @pre Caller holds a ScopedLock. */
+    Enum get() const { return state; }
+    /** @pre Caller holds a ScopedLock. */
+    operator Enum() const { return state; }
+
+    /** @pre Caller holds a ScopedLock */
+    void waitFor(Enum s) { ScopedWait w(*this); while (s != state) wait(); }
+    /** @pre Caller holds a ScopedLock */
+    void waitFor(Set s) { ScopedWait w(*this); while (!s.test(state)) wait(); }
+    /** @pre Caller holds a ScopedLock */
+    void waitNot(Enum s) { ScopedWait w(*this); while (s == state) wait(); }
+    /** @pre Caller holds a ScopedLock */
+    void waitNot(Set s) { ScopedWait w(*this); while (s.test(state)) wait(); }
+    
+  private:
+    Enum state;
+};
+
+}}
+
+
+#endif  /*!QPID_SYS_STATEMONITOR_H*/