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Diffstat (limited to 'boost/asio/experimental/detached.hpp')
-rw-r--r-- | boost/asio/experimental/detached.hpp | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/boost/asio/experimental/detached.hpp b/boost/asio/experimental/detached.hpp new file mode 100644 index 0000000000..c3e7adafac --- /dev/null +++ b/boost/asio/experimental/detached.hpp @@ -0,0 +1,67 @@ +// +// experimental/detached.hpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2018 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_EXPERIMENTAL_DETACHED_HPP +#define BOOST_ASIO_EXPERIMENTAL_DETACHED_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include <boost/asio/detail/config.hpp> +#include <memory> + +#include <boost/asio/detail/push_options.hpp> + +namespace boost { +namespace asio { +namespace experimental { + +/// Class used to specify that an asynchronous operation is detached. +/** + + * The detached_t class is used to indicate that an asynchronous operation is + * detached. That is, there is no completion handler waiting for the + * operation's result. A detached_t object may be passed as a handler to an + * asynchronous operation, typically using the special value + * @c boost::asio::experimental::detached. For example: + + * @code my_socket.async_send(my_buffer, boost::asio::experimental::detached); + * @endcode + */ +class detached_t +{ +public: + /// Constructor. + BOOST_ASIO_CONSTEXPR detached_t() + { + } +}; + +/// A special value, similar to std::nothrow. +/** + * See the documentation for boost::asio::experimental::detached_t for a usage + * example. + */ +#if defined(BOOST_ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION) +constexpr detached_t detached; +#elif defined(BOOST_ASIO_MSVC) +__declspec(selectany) detached_t detached; +#endif + +} // namespace experimental +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#include <boost/asio/experimental/impl/detached.hpp> + +#endif // BOOST_ASIO_EXPERIMENTAL_DETACHED_HPP |