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+//----------------------------------------------------------------------------
+/// @file atomic.hpp
+/// @brief Basic layer for to simplify the use of atomic functions
+/// @author Copyright(c) 2016 Francisco José Tapia (fjtapia@gmail.com )\n
+///         Distributed under the Boost Software License, Version 1.0.\n
+///         ( See accompanying file LICENSE_1_0.txt or copy at
+///           http://www.boost.org/LICENSE_1_0.txt  )
+/// @version 0.1
+///
+/// @remarks
+//-----------------------------------------------------------------------------
+#ifndef __BOOST_SORT_PARALLEL_DETAIL_UTIL_ATOMIC_HPP
+#define __BOOST_SORT_PARALLEL_DETAIL_UTIL_ATOMIC_HPP
+
+#include <atomic>
+#include <cassert>
+#include <type_traits>
+
+namespace boost
+{
+namespace sort
+{
+namespace common
+{
+namespace util
+{
+//-----------------------------------------------------------------------------
+//  function : atomic_read
+/// @brief make the atomic read of an atomic variable, using a memory model
+/// @param at_var : atomic variable to read
+/// @return value obtained
+//-----------------------------------------------------------------------------
+template<typename T>
+inline T atomic_read(std::atomic<T> &at_var)
+{
+    return std::atomic_load_explicit < T > (&at_var, std::memory_order_acquire);
+};
+//
+//-----------------------------------------------------------------------------
+//  function : atomic_add
+/// @brief Add a number to an atomic variable, using a memory model
+/// @param at_var : variable to add
+/// @param num : value to add to at_var
+/// @return result of the operation
+//-----------------------------------------------------------------------------
+template<typename T, typename T2>
+inline T atomic_add(std::atomic<T> &at_var, T2 num)
+{
+    static_assert (std::is_integral< T2 >::value, "Bad parameter");
+    return std::atomic_fetch_add_explicit <T> 
+                               (&at_var, (T) num, std::memory_order_acq_rel);
+};
+//
+//-----------------------------------------------------------------------------
+//  function : atomic_sub
+/// @brief Atomic subtract of an atomic variable using memory model
+/// @param at_var : Varibale to subtract
+/// @param num : value to sub to at_var
+/// @return result of the operation
+//-----------------------------------------------------------------------------
+template<typename T, typename T2>
+inline T atomic_sub(std::atomic<T> &at_var, T2 num)
+{
+    static_assert (std::is_integral< T2 >::value, "Bad parameter");
+    return std::atomic_fetch_sub_explicit <T> 
+                                (&at_var, (T) num, std::memory_order_acq_rel);
+};
+//
+//-----------------------------------------------------------------------------
+//  function : atomic_write
+/// @brief Write a value in an atomic variable using memory model
+/// @param at_var : varible to write
+/// @param num : value to write in at_var
+//-----------------------------------------------------------------------------
+template<typename T, typename T2>
+inline void atomic_write(std::atomic<T> &at_var, T2 num)
+{
+    static_assert (std::is_integral< T2 >::value, "Bad parameter");
+    std::atomic_store_explicit <T> 
+                                (&at_var, (T) num, std::memory_order_release);
+};
+template<typename T>
+struct counter_guard
+{
+    typedef std::atomic<T> atomic_t;
+    atomic_t &count;
+
+    counter_guard(atomic_t & counter): count(counter) { };
+    ~counter_guard() {atomic_sub(count, 1); };
+};
+//
+//****************************************************************************
+};// End namespace util
+};// End namespace common
+};// End namespace sort
+};// End namespace boost
+//****************************************************************************
+#endif