1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
//
// detail/reactive_socket_recv_op_ext_local.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
// Copyright (C) 2016-2019 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
//
// 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 BOOST_ASIO_DETAIL_REACTIVE_SOCKET_RECV_OP_EXT_LOCAL_HPP
#define BOOST_ASIO_DETAIL_REACTIVE_SOCKET_RECV_OP_EXT_LOCAL_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#include <boost/asio/detail/bind_handler.hpp>
#include <boost/asio/detail/buffer_sequence_adapter.hpp>
#include <boost/asio/detail/fenced_block.hpp>
#include <boost/asio/detail/memory.hpp>
#include <boost/asio/detail/reactor_op_ext_local.hpp>
#include <boost/asio/detail/socket_ops_ext_local.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace detail {
template <typename MutableBufferSequence>
class reactive_socket_recv_op_base_ext_local : public reactor_op_ext_local
{
public:
reactive_socket_recv_op_base_ext_local(socket_type socket,
socket_ops::state_type state, const MutableBufferSequence& buffers,
socket_base::message_flags flags, func_type complete_func)
: reactor_op_ext_local(&reactive_socket_recv_op_base_ext_local::do_perform, complete_func),
socket_(socket),
state_(state),
buffers_(buffers),
flags_(flags)
{
}
static status do_perform(reactor_op* base)
{
reactive_socket_recv_op_base_ext_local* o(
static_cast<reactive_socket_recv_op_base_ext_local*>(base));
buffer_sequence_adapter<boost::asio::mutable_buffer,
MutableBufferSequence> bufs(o->buffers_);
status result = socket_ops::non_blocking_recv(o->socket_,
bufs.buffers(), bufs.count(), o->flags_,
(o->state_ & socket_ops::stream_oriented) != 0,
o->ec_, o->bytes_transferred_, o->uid_, o->gid_) ? done : not_done;
if (result == done)
if ((o->state_ & socket_ops::stream_oriented) != 0)
if (o->bytes_transferred_ == 0)
result = done_and_exhausted;
BOOST_ASIO_HANDLER_REACTOR_OPERATION((*o, "non_blocking_recv",
o->ec_, o->bytes_transferred_));
return result;
}
private:
socket_type socket_;
socket_ops::state_type state_;
MutableBufferSequence buffers_;
socket_base::message_flags flags_;
};
template <typename MutableBufferSequence, typename Handler>
class reactive_socket_recv_op_ext_local :
public reactive_socket_recv_op_base_ext_local<MutableBufferSequence>
{
public:
BOOST_ASIO_DEFINE_HANDLER_PTR(reactive_socket_recv_op_ext_local);
reactive_socket_recv_op_ext_local(socket_type socket,
socket_ops::state_type state, const MutableBufferSequence& buffers,
socket_base::message_flags flags, Handler& handler)
: reactive_socket_recv_op_base_ext_local<MutableBufferSequence>(socket, state,
buffers, flags, &reactive_socket_recv_op_ext_local::do_complete),
handler_(BOOST_ASIO_MOVE_CAST(Handler)(handler))
{
handler_work<Handler>::start(handler_);
}
static void do_complete(void* owner, operation* base,
const boost::system::error_code& /*ec*/,
std::size_t /*bytes_transferred*/)
{
// Take ownership of the handler object.
reactive_socket_recv_op_ext_local* o(static_cast<reactive_socket_recv_op_ext_local*>(base));
ptr p = { boost::asio::detail::addressof(o->handler_), o, o };
handler_work<Handler> w(o->handler_);
BOOST_ASIO_HANDLER_COMPLETION((*o));
// 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::binder4<Handler, boost::system::error_code, std::size_t, std::uint32_t, std::uint32_t>
handler(o->handler_, o->ec_, o->bytes_transferred_, o->uid_, o->gid_);
p.h = boost::asio::detail::addressof(handler.handler_);
p.reset();
// Make the upcall if required.
if (owner)
{
fenced_block b(fenced_block::half);
BOOST_ASIO_HANDLER_INVOCATION_BEGIN((handler.arg1_, handler.arg2_, handler.arg3_, handler.arg4_));
w.complete(handler, handler.handler_);
BOOST_ASIO_HANDLER_INVOCATION_END;
}
}
private:
Handler handler_;
};
} // namespace detail
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_DETAIL_REACTIVE_SOCKET_RECV_OP_EXT_LOCAL_HPP
|
