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- //
- // detail/future.hpp
- // ~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 ASIO_DETAIL_FUTURE_HPP
- #define ASIO_DETAIL_FUTURE_HPP
-
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
- #include "asio/detail/config.hpp"
- #if defined(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(ASIO_HAS_CLANG_LIBCXX)
- # if defined(_GLIBCXX_HAS_GTHREADS)
- # define ASIO_HAS_STD_FUTURE_CLASS 1
- # endif // defined(_GLIBCXX_HAS_GTHREADS)
- # else // defined(__GNUC__) && !defined(ASIO_HAS_CLANG_LIBCXX)
- # define ASIO_HAS_STD_FUTURE_CLASS 1
- # endif // defined(__GNUC__) && !defined(ASIO_HAS_CLANG_LIBCXX)
- #endif // defined(ASIO_HAS_STD_FUTURE)
-
- #endif // ASIO_DETAIL_FUTURE_HPP
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