ceph/src/boost/boost/asio/detail/reactive_socket_connect_op.hpp

   1 //
   2 // detail/reactive_socket_connect_op.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2017 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_DETAIL_REACTIVE_SOCKET_CONNECT_OP_HPP
  12 #define BOOST_ASIO_DETAIL_REACTIVE_SOCKET_CONNECT_OP_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 <boost/asio/detail/bind_handler.hpp>
  20 #include <boost/asio/detail/buffer_sequence_adapter.hpp>
  21 #include <boost/asio/detail/fenced_block.hpp>
  22 #include <boost/asio/detail/memory.hpp>
  23 #include <boost/asio/detail/reactor_op.hpp>
  24 #include <boost/asio/detail/socket_ops.hpp>
  25
  26 #include <boost/asio/detail/push_options.hpp>
  27
  28 namespace boost {
  29 namespace asio {
  30 namespace detail {
  31
  32 class reactive_socket_connect_op_base : public reactor_op
  33 {
  34 public:
  35   reactive_socket_connect_op_base(socket_type socket, func_type complete_func)
  36     : reactor_op(&reactive_socket_connect_op_base::do_perform, complete_func),
  37       socket_(socket)
  38   {
  39   }
  40
  41   static status do_perform(reactor_op* base)
  42   {
  43     reactive_socket_connect_op_base* o(
  44         static_cast<reactive_socket_connect_op_base*>(base));
  45
  46     status result = socket_ops::non_blocking_connect(
  47         o->socket_, o->ec_) ? done : not_done;
  48
  49     BOOST_ASIO_HANDLER_REACTOR_OPERATION((*o, "non_blocking_connect", o->ec_));
  50
  51     return result;
  52   }
  53
  54 private:
  55   socket_type socket_;
  56 };
  57
  58 template <typename Handler>
  59 class reactive_socket_connect_op : public reactive_socket_connect_op_base
  60 {
  61 public:
  62   BOOST_ASIO_DEFINE_HANDLER_PTR(reactive_socket_connect_op);
  63
  64   reactive_socket_connect_op(socket_type socket, Handler& handler)
  65     : reactive_socket_connect_op_base(socket,
  66         &reactive_socket_connect_op::do_complete),
  67       handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
  68   {
  69     handler_work<Handler>::start(handler_);
  70   }
  71
  72   static void do_complete(void* owner, operation* base,
  73       const boost::system::error_code& /*ec*/,
  74       std::size_t /*bytes_transferred*/)
  75   {
  76     // Take ownership of the handler object.
  77     reactive_socket_connect_op* o
  78       (static_cast<reactive_socket_connect_op*>(base));
  79     ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
  80     handler_work<Handler> w(o->handler_);
  81
  82     BOOST_ASIO_HANDLER_COMPLETION((*o));
  83
  84     // Make a copy of the handler so that the memory can be deallocated before
  85     // the upcall is made. Even if we're not about to make an upcall, a
  86     // sub-object of the handler may be the true owner of the memory associated
  87     // with the handler. Consequently, a local copy of the handler is required
  88     // to ensure that any owning sub-object remains valid until after we have
  89     // deallocated the memory here.
  90     detail::binder1<Handler, boost::system::error_code>
  91       handler(o->handler_, o->ec_);
  92     p.h = boost::asio::detail::addressof(handler.handler_);
  93     p.reset();
  94
  95     // Make the upcall if required.
  96     if (owner)
  97     {
  98       fenced_block b(fenced_block::half);
  99       BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_));
 100       w.complete(handler, handler.handler_);
 101       BOOST_ASIO_HANDLER_INVOCATION_END;
 102     }
 103   }
 104
 105 private:
 106   Handler handler_;
 107 };
 108
 109 } // namespace detail
 110 } // namespace asio
 111 } // namespace boost
 112
 113 #include <boost/asio/detail/pop_options.hpp>
 114
 115 #endif // BOOST_ASIO_DETAIL_REACTIVE_SOCKET_CONNECT_OP_HPP