2 // detail/winrt_socket_send_op.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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)
11 #ifndef BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP
12 #define BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP
14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
18 #include <boost/asio/detail/config.hpp>
20 #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
22 #include <boost/asio/detail/bind_handler.hpp>
23 #include <boost/asio/detail/buffer_sequence_adapter.hpp>
24 #include <boost/asio/detail/fenced_block.hpp>
25 #include <boost/asio/detail/handler_alloc_helpers.hpp>
26 #include <boost/asio/detail/handler_invoke_helpers.hpp>
27 #include <boost/asio/detail/memory.hpp>
28 #include <boost/asio/detail/winrt_async_op.hpp>
29 #include <boost/asio/error.hpp>
31 #include <boost/asio/detail/push_options.hpp>
37 template <typename ConstBufferSequence, typename Handler>
38 class winrt_socket_send_op :
39 public winrt_async_op<unsigned int>
42 BOOST_ASIO_DEFINE_HANDLER_PTR(winrt_socket_send_op);
44 winrt_socket_send_op(const ConstBufferSequence& buffers, Handler& handler)
45 : winrt_async_op<unsigned int>(&winrt_socket_send_op::do_complete),
47 handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
49 handler_work<Handler>::start(handler_);
52 static void do_complete(void* owner, operation* base,
53 const boost::system::error_code&, std::size_t)
55 // Take ownership of the operation object.
56 winrt_socket_send_op* o(static_cast<winrt_socket_send_op*>(base));
57 ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
58 handler_work<Handler> w(o->handler_);
60 BOOST_ASIO_HANDLER_COMPLETION((*o));
62 #if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
63 // Check whether buffers are still valid.
66 buffer_sequence_adapter<boost::asio::const_buffer,
67 ConstBufferSequence>::validate(o->buffers_);
69 #endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
71 // Make a copy of the handler so that the memory can be deallocated before
72 // the upcall is made. Even if we're not about to make an upcall, a
73 // sub-object of the handler may be the true owner of the memory associated
74 // with the handler. Consequently, a local copy of the handler is required
75 // to ensure that any owning sub-object remains valid until after we have
76 // deallocated the memory here.
77 detail::binder2<Handler, boost::system::error_code, std::size_t>
78 handler(o->handler_, o->ec_, o->result_);
79 p.h = boost::asio::detail::addressof(handler.handler_);
82 // Make the upcall if required.
85 fenced_block b(fenced_block::half);
86 BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
87 w.complete(handler, handler.handler_);
88 BOOST_ASIO_HANDLER_INVOCATION_END;
93 ConstBufferSequence buffers_;
101 #include <boost/asio/detail/pop_options.hpp>
103 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
105 #endif // BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP