Statistics
| Revision:

root / tmp / org.txm.statsengine.r.core.win32 / res / win32 / library / BH / include / boost / asio / detail / win_iocp_socket_recv_op.hpp @ 2486

History | View | Annotate | Download (3.8 kB)

1
//
2
// detail/win_iocp_socket_recv_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 BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECV_OP_HPP
12
#define BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECV_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/addressof.hpp>
23
#include <boost/asio/detail/bind_handler.hpp>
24
#include <boost/asio/detail/buffer_sequence_adapter.hpp>
25
#include <boost/asio/detail/fenced_block.hpp>
26
#include <boost/asio/detail/handler_alloc_helpers.hpp>
27
#include <boost/asio/detail/handler_invoke_helpers.hpp>
28
#include <boost/asio/detail/operation.hpp>
29
#include <boost/asio/detail/socket_ops.hpp>
30
#include <boost/asio/error.hpp>
31

    
32
#include <boost/asio/detail/push_options.hpp>
33

    
34
namespace boost {
35
namespace asio {
36
namespace detail {
37

    
38
template <typename MutableBufferSequence, typename Handler>
39
class win_iocp_socket_recv_op : public operation
40
{
41
public:
42
  BOOST_ASIO_DEFINE_HANDLER_PTR(win_iocp_socket_recv_op);
43

    
44
  win_iocp_socket_recv_op(socket_ops::state_type state,
45
      socket_ops::weak_cancel_token_type cancel_token,
46
      const MutableBufferSequence& buffers, Handler& handler)
47
    : operation(&win_iocp_socket_recv_op::do_complete),
48
      state_(state),
49
      cancel_token_(cancel_token),
50
      buffers_(buffers),
51
      handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
52
  {
53
  }
54

    
55
  static void do_complete(io_service_impl* owner, operation* base,
56
      const boost::system::error_code& result_ec,
57
      std::size_t bytes_transferred)
58
  {
59
    boost::system::error_code ec(result_ec);
60

    
61
    // Take ownership of the operation object.
62
    win_iocp_socket_recv_op* o(static_cast<win_iocp_socket_recv_op*>(base));
63
    ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
64

    
65
    BOOST_ASIO_HANDLER_COMPLETION((o));
66

    
67
#if defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
68
    // Check whether buffers are still valid.
69
    if (owner)
70
    {
71
      buffer_sequence_adapter<boost::asio::mutable_buffer,
72
          MutableBufferSequence>::validate(o->buffers_);
73
    }
74
#endif // defined(BOOST_ASIO_ENABLE_BUFFER_DEBUGGING)
75

    
76
    socket_ops::complete_iocp_recv(o->state_, o->cancel_token_,
77
        buffer_sequence_adapter<boost::asio::mutable_buffer,
78
          MutableBufferSequence>::all_empty(o->buffers_),
79
        ec, bytes_transferred);
80

    
81
    // Make a copy of the handler so that the memory can be deallocated before
82
    // the upcall is made. Even if we're not about to make an upcall, a
83
    // sub-object of the handler may be the true owner of the memory associated
84
    // with the handler. Consequently, a local copy of the handler is required
85
    // to ensure that any owning sub-object remains valid until after we have
86
    // deallocated the memory here.
87
    detail::binder2<Handler, boost::system::error_code, std::size_t>
88
      handler(o->handler_, ec, bytes_transferred);
89
    p.h = boost::asio::detail::addressof(handler.handler_);
90
    p.reset();
91

    
92
    // Make the upcall if required.
93
    if (owner)
94
    {
95
      fenced_block b(fenced_block::half);
96
      BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_));
97
      boost_asio_handler_invoke_helpers::invoke(handler, handler.handler_);
98
      BOOST_ASIO_HANDLER_INVOCATION_END;
99
    }
100
  }
101

    
102
private:
103
  socket_ops::state_type state_;
104
  socket_ops::weak_cancel_token_type cancel_token_;
105
  MutableBufferSequence buffers_;
106
  Handler handler_;
107
};
108

    
109
} // namespace detail
110
} // namespace asio
111
} // namespace boost
112

    
113
#include <boost/asio/detail/pop_options.hpp>
114

    
115
#endif // defined(BOOST_ASIO_HAS_IOCP)
116

    
117
#endif // BOOST_ASIO_DETAIL_WIN_IOCP_SOCKET_RECV_OP_HPP