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diff --git a/qpid/cpp/src/qpid/sys/AtomicValue_mutex.h b/qpid/cpp/src/qpid/sys/AtomicValue_mutex.h
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+++ b/qpid/cpp/src/qpid/sys/AtomicValue_mutex.h
@@ -0,0 +1,83 @@
+#ifndef QPID_SYS_ATOMICVALUE_MUTEX_H
+#define QPID_SYS_ATOMICVALUE_MUTEX_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.
+ *
+ */
+
+#if !defined(QPID_SYS_ATOMICVALUE_H)
+#error "This file should only be included via AtomicValue.h."
+#endif
+
+#include "qpid/sys/Mutex.h"
+
+namespace qpid {
+namespace sys {
+
+/**
+ * Atomic value of type T. T must be an integral type of size 1,2,4 or 8 bytes.
+ * All operations are atomic and preform a full memory barrier unless otherwise noted.
+ */
+template <class T>
+class AtomicValue
+{
+  public:
+    AtomicValue(T init=0) : value(init) {}
+
+    // Update and return new value.
+    inline T operator+=(T n) { Lock l(lock); return value += n; }
+    inline T operator-=(T n) { Lock l(lock); return value -= n; }
+    inline T operator++() { return *this += 1; }
+    inline T operator--() { return *this -= 1; }
+
+    // Update and return old value.
+    inline T fetchAndAdd(T n) { Lock l(lock); T old=value; value += n; return old; }
+    inline T fetchAndSub(T n) { Lock l(lock); T old=value; value -= n; return old; }
+    inline T operator++(int) { return fetchAndAdd(1); }
+    inline T operator--(int) { return fetchAndSub(1); }
+
+    AtomicValue& operator=(T newval) { Lock l(lock); value = newval; return *this; }
+
+    /** If current value == testval then set to newval. Returns the old value. */
+    T valueCompareAndSwap(T testval, T newval) {
+        Lock l(lock);
+        T old=value;
+        if (value == testval) value = newval;
+        return old;
+    }
+
+    /** If current value == testval then set to newval. Returns true if the swap was performed. */    
+    bool boolCompareAndSwap(T testval, T newval) {
+        Lock l(lock);
+        if (value == testval) { value = newval; return true; }
+        return false;
+    }
+
+    T get() const { Lock l(lock); return value; }
+        
+  private:
+    typedef Mutex::ScopedLock Lock;
+    T value;
+    mutable Mutex lock;
+};
+
+}} // namespace qpid::sys
+
+#endif  /*!QPID_SYS_ATOMICVALUE_MUTEX_H*/