SDK: Implement asio-compliant asynchronous operation helpers

fairmq/sdk/Traits.h

@@ -0,0 +1,50 @@
+/********************************************************************************
+ *    Copyright (C) 2019 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+
+#ifndef FAIR_MQ_SDK_TRAITS_H
+#define FAIR_MQ_SDK_TRAITS_H
+
+#include <asio/associated_allocator.hpp>
+#include <asio/associated_executor.hpp>
+#include <type_traits>
+
+namespace asio {
+namespace detail {
+
+/// Specialize to match our coding conventions
+template<typename T, typename Executor>
+struct associated_executor_impl<T,
+                                Executor,
+                                std::enable_if_t<is_executor<typename T::ExecutorType>::value>>
+{
+    using type = typename T::ExecutorType;
+
+    static auto get(const T& obj, const Executor& /*ex = Executor()*/) noexcept -> type
+    {
+        return obj.GetExecutor();
+    }
+};
+
+/// Specialize to match our coding conventions
+template<typename T, typename Allocator>
+struct associated_allocator_impl<T,
+                                Allocator,
+                                std::enable_if_t<T::AllocatorType>>
+{
+    using type = typename T::AllocatorType;
+
+    static auto get(const T& obj, const Allocator& /*alloc = Allocator()*/) noexcept -> type
+    {
+        return obj.GetAllocator();
+    }
+};
+
+} /* namespace detail */
+} /* namespace asio */
+
+#endif /* FAIR_MQ_SDK_TRAITS_H */