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

   1 //
   2 // detail/win_iocp_socket_connect_op.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2019 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_WIN_IOCP_SOCKET_CONNECT_OP_HPP
  12 #define BOOST_ASIO_DETAIL_WIN_IOCP_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
  20 #if defined(BOOST_ASIO_HAS_IOCP)
  21
  22 #include <boost/asio/detail/bind_handler.hpp>
  23 #include <boost/asio/detail/fenced_block.hpp>
  24 #include <boost/asio/detail/handler_alloc_helpers.hpp>
  25 #include <boost/asio/detail/handler_invoke_helpers.hpp>
  26 #include <boost/asio/detail/memory.hpp>
  27 #include <boost/asio/detail/reactor_op.hpp>
  28 #include <boost/asio/detail/socket_ops.hpp>
  29 #include <boost/asio/error.hpp>
  30
  31 #include <boost/asio/detail/push_options.hpp>
  32
  33 namespace boost {
  34 namespace asio {
  35 namespace detail {
  36
  37 class win_iocp_socket_connect_op_base : public reactor_op
  38 {
  39 public:
  40   win_iocp_socket_connect_op_base(socket_type socket, func_type complete_func)
  41     : reactor_op(&win_iocp_socket_connect_op_base::do_perform, complete_func),
  42       socket_(socket),
  43       connect_ex_(false)
  44   {
  45   }
  46
  47   static status do_perform(reactor_op* base)
  48   {
  49     win_iocp_socket_connect_op_base* o(
  50         static_cast<win_iocp_socket_connect_op_base*>(base));
  51
  52     return socket_ops::non_blocking_connect(
  53         o->socket_, o->ec_) ? done : not_done;
  54   }
  55
  56   socket_type socket_;
  57   bool connect_ex_;
  58 };
  59
  60 template <typename Handler, typename IoExecutor>
  61 class win_iocp_socket_connect_op : public win_iocp_socket_connect_op_base
  62 {
  63 public:
  64   BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_connect_op);
  65
  66   win_iocp_socket_connect_op(socket_type socket,
  67       Handler& handler, const IoExecutor& io_ex)
  68     : win_iocp_socket_connect_op_base(socket,
  69         &win_iocp_socket_connect_op::do_complete),
  70       handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler)),
  71       io_executor_(io_ex)
  72   {
  73     handler_work<Handler, IoExecutor>::start(handler_, io_executor_);
  74   }
  75
  76   static void do_complete(void* owner, operation* base,
  77       const boost::system::error_code& result_ec,
  78       std::size_t /*bytes_transferred*/)
  79   {
  80     boost::system::error_code ec(result_ec);
  81
  82     // Take ownership of the operation object.
  83     win_iocp_socket_connect_op* o(
  84         static_cast<win_iocp_socket_connect_op*>(base));
  85     ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
  86     handler_work<Handler, IoExecutor> w(o->handler_, o->io_executor_);
  87
  88     if (owner)
  89     {
  90       if (o->connect_ex_)
  91         socket_ops::complete_iocp_connect(o->socket_, ec);
  92       else
  93         ec = o->ec_;
  94     }
  95
  96     BOOST_ASIO_HANDLER_COMPLETION((*o));
  97
  98     // Make a copy of the handler so that the memory can be deallocated before
  99     // the upcall is made. Even if we're not about to make an upcall, a
 100     // sub-object of the handler may be the true owner of the memory associated
 101     // with the handler. Consequently, a local copy of the handler is required
 102     // to ensure that any owning sub-object remains valid until after we have
 103     // deallocated the memory here.
 104     detail::binder1<Handler, boost::system::error_code>
 105       handler(o->handler_, ec);
 106     p.h = boost::asio::detail::addressof(handler.handler_);
 107     p.reset();
 108
 109     // Make the upcall if required.
 110     if (owner)
 111     {
 112       fenced_block b(fenced_block::half);
 113       BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_));
 114       w.complete(handler, handler.handler_);
 115       BOOST_ASIO_HANDLER_INVOCATION_END;
 116     }
 117   }
 118
 119 private:
 120   Handler handler_;
 121   IoExecutor io_executor_;
 122 };
 123
 124 } // namespace detail
 125 } // namespace asio
 126 } // namespace boost
 127
 128 #include <boost/asio/detail/pop_options.hpp>
 129
 130 #endif // defined(BOOST_ASIO_HAS_IOCP)
 131
 132 #endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_CONNECT_OP_HPP