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Diffstat (limited to '3rdparty/asio/include/asio/packaged_task.hpp')
-rw-r--r-- | 3rdparty/asio/include/asio/packaged_task.hpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/packaged_task.hpp b/3rdparty/asio/include/asio/packaged_task.hpp new file mode 100644 index 00000000000..68e5b9b175a --- /dev/null +++ b/3rdparty/asio/include/asio/packaged_task.hpp @@ -0,0 +1,66 @@ +// +// packaged_task.hpp +// ~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 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_PACKAGED_TASK_HPP +#define ASIO_PACKAGED_TASK_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include "asio/detail/config.hpp" +#include "asio/detail/future.hpp" + +#if defined(ASIO_HAS_STD_FUTURE_CLASS) \ + || defined(GENERATING_DOCUMENTATION) + +#include "asio/async_result.hpp" +#include "asio/detail/type_traits.hpp" + +#include "asio/detail/push_options.hpp" + +namespace asio { + +/// Partial specialisation of @c async_result for @c std::packaged_task. +template <typename Result, typename... Args, typename Signature> +class async_result<std::packaged_task<Result(Args...)>, Signature> +{ +public: + /// The packaged task is the concrete completion handler type. + typedef std::packaged_task<Result(Args...)> completion_handler_type; + + /// The return type of the initiating function is the future obtained from + /// the packaged task. + typedef std::future<Result> return_type; + + /// The constructor extracts the future from the packaged task. + explicit async_result(completion_handler_type& h) + : future_(h.get_future()) + { + } + + /// Returns the packaged task's future. + return_type get() + { + return std::move(future_); + } + +private: + return_type future_; +}; + +} // namespace asio + +#include "asio/detail/pop_options.hpp" + +#endif // defined(ASIO_HAS_STD_FUTURE_CLASS) + // || defined(GENERATING_DOCUMENTATION) + +#endif // ASIO_PACKAGED_TASK_HPP |