| // |
| // detail/future.hpp |
| // ~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // |
| // 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_ASIO_DETAIL_FUTURE_HPP |
| #define BOOST_ASIO_DETAIL_FUTURE_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/config.hpp> |
| #if defined(BOOST_ASIO_HAS_STD_FUTURE) |
| # include <future> |
| // Even though the future header is available, libstdc++ may not implement the |
| // std::future class itself. However, we need to have already included the |
| // future header to reliably test for _GLIBCXX_HAS_GTHREADS. |
| # if defined(__GNUC__) && !defined(BOOST_ASIO_HAS_CLANG_LIBCXX) |
| # if defined(_GLIBCXX_HAS_GTHREADS) |
| # define BOOST_ASIO_HAS_STD_FUTURE_CLASS 1 |
| # endif // defined(_GLIBCXX_HAS_GTHREADS) |
| # else // defined(__GNUC__) && !defined(BOOST_ASIO_HAS_CLANG_LIBCXX) |
| # define BOOST_ASIO_HAS_STD_FUTURE_CLASS 1 |
| # endif // defined(__GNUC__) && !defined(BOOST_ASIO_HAS_CLANG_LIBCXX) |
| #endif // defined(BOOST_ASIO_HAS_STD_FUTURE) |
| |
| #endif // BOOST_ASIO_DETAIL_FUTURE_HPP |
