Realistic 3D camera system
3D camera system components
win_iocp_socket_send_op.hpp
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1 //
2 // detail/win_iocp_socket_send_op.hpp
3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2015 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 ASIO_DETAIL_WIN_IOCP_SOCKET_SEND_OP_HPP
12 #define ASIO_DETAIL_WIN_IOCP_SOCKET_SEND_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 "asio/detail/config.hpp"
19 
20 #if defined(ASIO_HAS_IOCP)
21 
30 #include "asio/error.hpp"
31 
33 
34 namespace asio {
35 namespace detail {
36 
37 template <typename ConstBufferSequence, typename Handler>
38 class win_iocp_socket_send_op : public operation
39 {
40 public:
41  ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_send_op);
42 
43  win_iocp_socket_send_op(socket_ops::weak_cancel_token_type cancel_token,
44  const ConstBufferSequence& buffers, Handler& handler)
45  : operation(&win_iocp_socket_send_op::do_complete),
46  cancel_token_(cancel_token),
47  buffers_(buffers),
48  handler_(ASIO_MOVE_CAST(Handler)(handler))
49  {
50  }
51 
52  static void do_complete(io_service_impl* owner, operation* base,
53  const asio::error_code& result_ec,
54  std::size_t bytes_transferred)
55  {
56  asio::error_code ec(result_ec);
57 
58  // Take ownership of the operation object.
59  win_iocp_socket_send_op* o(static_cast<win_iocp_socket_send_op*>(base));
60  ptr p = { asio::detail::addressof(o->handler_), o, o };
61 
63 
64 #if defined(ASIO_ENABLE_BUFFER_DEBUGGING)
65  // Check whether buffers are still valid.
66  if (owner)
67  {
68  buffer_sequence_adapter<asio::const_buffer,
69  ConstBufferSequence>::validate(o->buffers_);
70  }
71 #endif // defined(ASIO_ENABLE_BUFFER_DEBUGGING)
72 
73  socket_ops::complete_iocp_send(o->cancel_token_, ec);
74 
75  // Make a copy of the handler so that the memory can be deallocated before
76  // the upcall is made. Even if we're not about to make an upcall, a
77  // sub-object of the handler may be the true owner of the memory associated
78  // with the handler. Consequently, a local copy of the handler is required
79  // to ensure that any owning sub-object remains valid until after we have
80  // deallocated the memory here.
81  detail::binder2<Handler, asio::error_code, std::size_t>
82  handler(o->handler_, ec, bytes_transferred);
83  p.h = asio::detail::addressof(handler.handler_);
84  p.reset();
85 
86  // Make the upcall if required.
87  if (owner)
88  {
90  ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
91  asio_handler_invoke_helpers::invoke(handler, handler.handler_);
93  }
94  }
95 
96 private:
98  ConstBufferSequence buffers_;
99  Handler handler_;
100 };
101 
102 } // namespace detail
103 } // namespace asio
104 
106 
107 #endif // defined(ASIO_HAS_IOCP)
108 
109 #endif // ASIO_DETAIL_WIN_IOCP_SOCKET_SEND_OP_HPP
#define ASIO_HANDLER_INVOCATION_END
Holds a buffer that cannot be modified.
Definition: buffer.hpp:211
asio::basic_streambuf< Allocator > & b
Definition: read.hpp:702
null_fenced_block fenced_block
class task_io_service io_service_impl
Definition: io_service.hpp:48
void invoke(Function &function, Context &context)
weak_ptr< void > weak_cancel_token_type
Definition: socket_ops.hpp:63
const MutableBufferSequence & buffers
Definition: read.hpp:521
#define ASIO_HANDLER_INVOCATION_BEGIN(args)
Class to represent an error code value.
Definition: error_code.hpp:80
task_io_service_operation operation
Definition: operation.hpp:32
#define ASIO_DEFINE_HANDLER_PTR(op)
#define ASIO_HANDLER_COMPLETION(args)
#define ASIO_MOVE_CAST(type)
Definition: config.hpp:138