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diff --git a/boost/fiber/numa/topology.hpp b/boost/fiber/numa/topology.hpp
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+++ b/boost/fiber/numa/topology.hpp
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+
+//          Copyright Oliver Kowalke 2017.
+// 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)
+
+#ifndef BOOST_FIBERS_NUMA_TOPOLOGY_H
+#define BOOST_FIBERS_NUMA_TOPOLOGY_H
+
+#include <cstdint>
+#include <set>
+#include <vector>
+
+#include <boost/config.hpp>
+
+#include <boost/fiber/detail/config.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace fibers {
+namespace numa {
+
+struct node {
+    std::uint32_t                   id;
+    std::set< std::uint32_t >       logical_cpus;
+    std::vector< std::uint32_t >    distance;
+};
+
+inline
+bool operator<( node const& lhs, node const& rhs) noexcept {
+    return lhs.id < rhs.id;
+}
+
+BOOST_FIBERS_DECL
+std::vector< node > topology();
+
+}}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_FIBERS_NUMA_TOPOLOGY_H