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diff --git a/src/lib/log/interprocess/interprocess_sync_null.h b/src/lib/log/interprocess/interprocess_sync_null.h
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+++ b/src/lib/log/interprocess/interprocess_sync_null.h
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+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef INTERPROCESS_SYNC_NULL_H
+#define INTERPROCESS_SYNC_NULL_H
+
+#include <log/interprocess/interprocess_sync.h>
+
+namespace isc {
+namespace log {
+namespace interprocess {
+
+/// \brief Null Interprocess Sync Class
+///
+/// This class specifies a concrete implementation for a null (no effect)
+/// interprocess synchronization mechanism. Please see the
+/// InterprocessSync class documentation for usage.
+class InterprocessSyncNull : public InterprocessSync {
+public:
+    /// \brief Constructor
+    ///
+    /// Creates a null interprocess synchronization object
+    ///
+    /// \param task_name Name of the synchronization task. This has to be
+    /// identical among the various processes that need to be
+    /// synchronized for the same task.
+    InterprocessSyncNull(const std::string& task_name) :
+        InterprocessSync(task_name)
+    {}
+
+    /// \brief Destructor
+    virtual ~InterprocessSyncNull();
+
+protected:
+    /// \brief Acquire the lock (never blocks)
+    ///
+    /// \return Always returns true
+    bool lock();
+
+    /// \brief Try to acquire a lock (doesn't block)
+    ///
+    /// \return Always returns true
+    bool tryLock();
+
+    /// \brief Release the lock
+    ///
+    /// \return Always returns true
+    bool unlock();
+};
+
+} // namespace interprocess
+} // namespace log
+} // namespace isc
+
+#endif // INTERPROCESS_SYNC_NULL_H