text: //
  // detail/win_iocp_wait_op.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 ASIO_DETAIL_WIN_IOCP_WAIT_OP_HPP
  #define ASIO_DETAIL_WIN_IOCP_WAIT_OP_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "xviz/third_party/asio/detail/config.hpp"
  
  #if defined(ASIO_HAS_IOCP)
  
  #include "xviz/third_party/asio/detail/bind_handler.hpp"
  #include "xviz/third_party/asio/detail/buffer_sequence_adapter.hpp"
  #include "xviz/third_party/asio/detail/fenced_block.hpp"
  #include "xviz/third_party/asio/detail/handler_alloc_helpers.hpp"
  #include "xviz/third_party/asio/detail/handler_invoke_helpers.hpp"
  #include "xviz/third_party/asio/detail/memory.hpp"
  #include "xviz/third_party/asio/detail/reactor_op.hpp"
  #include "xviz/third_party/asio/detail/socket_ops.hpp"
  #include "xviz/third_party/asio/error.hpp"
  
  #include "xviz/third_party/asio/detail/push_options.hpp"
  
  namespace asio {
  namespace detail {
  
  template <typename Handler>
  class win_iocp_wait_op : public reactor_op
  {
  public:
    ASIO_DEFINE_HANDLER_PTR(win_iocp_wait_op);
  
    win_iocp_wait_op(socket_ops::weak_cancel_token_type cancel_token,
        Handler& handler)
      : reactor_op(&win_iocp_wait_op::do_perform,
          &win_iocp_wait_op::do_complete),
        cancel_token_(cancel_token),
        handler_(ASIO_MOVE_CAST(Handler)(handler))
    {
      handler_work<Handler>::start(handler_);
    }
  
    static status do_perform(reactor_op*)
    {
      return done;
    }
  
    static void do_complete(void* owner, operation* base,
        const asio::error_code& result_ec,
        std::size_t /*bytes_transferred*/)
    {
      asio::error_code ec(result_ec);
  
      // Take ownership of the operation object.
      win_iocp_wait_op* o(static_cast<win_iocp_wait_op*>(base));
      ptr p = { asio::detail::addressof(o->handler_), o, o };
      handler_work<Handler> w(o->handler_);
  
      ASIO_HANDLER_COMPLETION((*o));
  
      // The reactor may have stored a result in the operation object.
      if (o->ec_)
        ec = o->ec_;
  
      // Map non-portable errors to their portable counterparts.
      if (ec.value() == ERROR_NETNAME_DELETED)
      {
        if (o->cancel_token_.expired())
          ec = asio::error::operation_aborted;
        else
          ec = asio::error::connection_reset;
      }
      else if (ec.value() == ERROR_PORT_UNREACHABLE)
      {
        ec = asio::error::connection_refused;
      }
  
      // Make a copy of the handler so that the memory can be deallocated before
      // the upcall is made. Even if we're not about to make an upcall, a
      // sub-object of the handler may be the true owner of the memory associated
      // with the handler. Consequently, a local copy of the handler is required
      // to ensure that any owning sub-object remains valid until after we have
      // deallocated the memory here.
      detail::binder1<Handler, asio::error_code>
        handler(o->handler_, ec);
      p.h = asio::detail::addressof(handler.handler_);
      p.reset();
  
      // Make the upcall if required.
      if (owner)
      {
        fenced_block b(fenced_block::half);
        ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_));
        w.complete(handler, handler.handler_);
        ASIO_HANDLER_INVOCATION_END;
      }
    }
  
  private:
    socket_ops::weak_cancel_token_type cancel_token_;
    Handler handler_;
  };
  
  } // namespace detail
  } // namespace asio
  
  #include "xviz/third_party/asio/detail/pop_options.hpp"
  
  #endif // defined(ASIO_HAS_IOCP)
  
  #endif // ASIO_DETAIL_WIN_IOCP_WAIT_OP_HPP
  