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diff --git a/boost/thread/poly_lockable_adapter.hpp b/boost/thread/poly_lockable_adapter.hpp
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+++ b/boost/thread/poly_lockable_adapter.hpp
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Vicente J. Botet Escriba 2008-2009,2012. Distributed under the Boost
+// Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/thread for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_THREAD_POLY_LOCKABLE_ADAPTER_HPP
+#define BOOST_THREAD_POLY_LOCKABLE_ADAPTER_HPP
+
+#include <boost/thread/poly_lockable.hpp>
+
+namespace boost
+{
+
+  //[poly_basic_lockable_adapter
+  template <typename Mutex, typename Base=poly_basic_lockable>
+  class poly_basic_lockable_adapter : public Base
+  {
+  public:
+    typedef Mutex mutex_type;
+
+  protected:
+    mutex_type& mtx() const
+    {
+      return mtx_;
+    }
+    mutable mutex_type mtx_; /*< mutable so that it can be modified by const functions >*/
+  public:
+
+    BOOST_THREAD_NO_COPYABLE( poly_basic_lockable_adapter) /*< no copyable >*/
+
+    poly_basic_lockable_adapter()
+    {}
+
+    void lock()
+    {
+      mtx().lock();
+    }
+    void unlock()
+    {
+      mtx().unlock();
+    }
+
+  };
+  //]
+
+  //[poly_lockable_adapter
+  template <typename Mutex, typename Base=poly_lockable>
+  class poly_lockable_adapter : public poly_basic_lockable_adapter<Mutex, Base>
+  {
+  public:
+    typedef Mutex mutex_type;
+
+    bool try_lock()
+    {
+      return this->mtx().try_lock();
+    }
+  };
+  //]
+
+  //[poly_timed_lockable_adapter
+  template <typename Mutex, typename Base=poly_timed_lockable>
+  class poly_timed_lockable_adapter: public poly_lockable_adapter<Mutex, Base>
+  {
+  public:
+    typedef Mutex mutex_type;
+
+    bool try_lock_until(chrono::system_clock::time_point const & abs_time)
+    {
+      return this->mtx().try_lock_until(abs_time);
+    }
+    bool try_lock_until(chrono::steady_clock::time_point const & abs_time)
+    {
+      return this->mtx().try_lock_until(abs_time);
+    }
+    bool try_lock_for(chrono::nanoseconds const & rel_time)
+    {
+      return this->mtx().try_lock_for(rel_time);
+    }
+
+  };
+  //]
+
+}
+#endif