ceph/src/boost/boost/asio/experimental/detached.hpp

   1 //
   2 // experimental/detached.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_EXPERIMENTAL_DETACHED_HPP
  12 #define BOOST_ASIO_EXPERIMENTAL_DETACHED_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/config.hpp>
  19 #include <memory>
  20
  21 #include <boost/asio/detail/push_options.hpp>
  22
  23 namespace boost {
  24 namespace asio {
  25 namespace experimental {
  26
  27 /// Class used to specify that an asynchronous operation is detached.
  28 /**
  29
  30  * The detached_t class is used to indicate that an asynchronous operation is
  31  * detached. That is, there is no completion handler waiting for the
  32  * operation's result. A detached_t object may be passed as a handler to an
  33  * asynchronous operation, typically using the special value
  34  * @c boost::asio::experimental::detached. For example:
  35
  36  * @code my_socket.async_send(my_buffer, boost::asio::experimental::detached);
  37  * @endcode
  38  */
  39 class detached_t
  40 {
  41 public:
  42   /// Constructor.
  43   BOOST_ASIO_CONSTEXPR detached_t()
  44   {
  45   }
  46 };
  47
  48 /// A special value, similar to std::nothrow.
  49 /**
  50  * See the documentation for boost::asio::experimental::detached_t for a usage
  51  * example.
  52  */
  53 #if defined(BOOST_ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION)
  54 constexpr detached_t detached;
  55 #elif defined(BOOST_ASIO_MSVC)
  56 __declspec(selectany) detached_t detached;
  57 #endif
  58
  59 } // namespace experimental
  60 } // namespace asio
  61 } // namespace boost
  62
  63 #include <boost/asio/detail/pop_options.hpp>
  64
  65 #include <boost/asio/experimental/impl/detached.hpp>
  66
  67 #endif // BOOST_ASIO_EXPERIMENTAL_DETACHED_HPP