Back to home page

EIC code displayed by LXR

 
 

    


File indexing completed on 2025-01-18 09:28:47

0001 //
0002 // detail/winrt_socket_send_op.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010 
0011 #ifndef BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP
0012 #define BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP
0013 
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017 
0018 #include <boost/asio/detail/config.hpp>
0019 
0020 #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
0021 
0022 #include <boost/asio/detail/bind_handler.hpp>
0023 #include <boost/asio/detail/buffer_sequence_adapter.hpp>
0024 #include <boost/asio/detail/fenced_block.hpp>
0025 #include <boost/asio/detail/handler_alloc_helpers.hpp>
0026 #include <boost/asio/detail/handler_work.hpp>
0027 #include <boost/asio/detail/memory.hpp>
0028 #include <boost/asio/detail/winrt_async_op.hpp>
0029 #include <boost/asio/error.hpp>
0030 
0031 #include <boost/asio/detail/push_options.hpp>
0032 
0033 namespace boost {
0034 namespace asio {
0035 namespace detail {
0036 
0037 template <typename ConstBufferSequence, typename Handler, typename IoExecutor>
0038 class winrt_socket_send_op :
0039   public winrt_async_op<unsigned int>
0040 {
0041 public:
0042   BOOST_ASIO_DEFINE_HANDLER_PTR(winrt_socket_send_op);
0043 
0044   winrt_socket_send_op(const ConstBufferSequence& buffers,
0045       Handler& handler, const IoExecutor& io_ex)
0046     : winrt_async_op<unsigned int>(&winrt_socket_send_op::do_complete),
0047       buffers_(buffers),
0048       handler_(static_cast<Handler&&>(handler)),
0049       work_(handler_, io_ex)
0050   {
0051   }
0052 
0053   static void do_complete(void* owner, operation* base,
0054       const boost::system::error_code&, std::size_t)
0055   {
0056     // Take ownership of the operation object.
0057     BOOST_ASIO_ASSUME(base != 0);
0058     winrt_socket_send_op* o(static_cast<winrt_socket_send_op*>(base));
0059     ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
0060 
0061     BOOST_ASIO_HANDLER_COMPLETION((*o));
0062 
0063     // Take ownership of the operation's outstanding work.
0064     handler_work<Handler, IoExecutor> w(
0065         static_cast<handler_work<Handler, IoExecutor>&&>(
0066           o->work_));
0067 
0068 #if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
0069     // Check whether buffers are still valid.
0070     if (owner)
0071     {
0072       buffer_sequence_adapter<boost::asio::const_buffer,
0073           ConstBufferSequence>::validate(o->buffers_);
0074     }
0075 #endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
0076 
0077     // Make a copy of the handler so that the memory can be deallocated before
0078     // the upcall is made. Even if we're not about to make an upcall, a
0079     // sub-object of the handler may be the true owner of the memory associated
0080     // with the handler. Consequently, a local copy of the handler is required
0081     // to ensure that any owning sub-object remains valid until after we have
0082     // deallocated the memory here.
0083     detail::binder2<Handler, boost::system::error_code, std::size_t>
0084       handler(o->handler_, o->ec_, o->result_);
0085     p.h = boost::asio::detail::addressof(handler.handler_);
0086     p.reset();
0087 
0088     // Make the upcall if required.
0089     if (owner)
0090     {
0091       fenced_block b(fenced_block::half);
0092       BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
0093       w.complete(handler, handler.handler_);
0094       BOOST_ASIO_HANDLER_INVOCATION_END;
0095     }
0096   }
0097 
0098 private:
0099   ConstBufferSequence buffers_;
0100   Handler handler_;
0101   handler_work<Handler, IoExecutor> executor_;
0102 };
0103 
0104 } // namespace detail
0105 } // namespace asio
0106 } // namespace boost
0107 
0108 #include <boost/asio/detail/pop_options.hpp>
0109 
0110 #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
0111 
0112 #endif // BOOST_ASIO_DETAIL_WINRT_SOCKET_SEND_OP_HPP