blob: 94f98423dd522fccb03e7c0b7d8b4e558143b31c (
plain)
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
|
//
// windows/overlapped_ptr.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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_WINDOWS_OVERLAPPED_PTR_HPP
#define BOOST_ASIO_WINDOWS_OVERLAPPED_PTR_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#if defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR) \
|| defined(GENERATING_DOCUMENTATION)
#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/win_iocp_overlapped_ptr.hpp>
#include <boost/asio/io_service.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace windows {
/// Wraps a handler to create an OVERLAPPED object for use with overlapped I/O.
/**
* A special-purpose smart pointer used to wrap an application handler so that
* it can be passed as the LPOVERLAPPED argument to overlapped I/O functions.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*/
class overlapped_ptr
: private noncopyable
{
public:
/// Construct an empty overlapped_ptr.
overlapped_ptr()
: impl_()
{
}
/// Construct an overlapped_ptr to contain the specified handler.
template <typename Handler>
explicit overlapped_ptr(boost::asio::io_service& io_service,
BOOST_ASIO_MOVE_ARG(Handler) handler)
: impl_(io_service, BOOST_ASIO_MOVE_CAST(Handler)(handler))
{
}
/// Destructor automatically frees the OVERLAPPED object unless released.
~overlapped_ptr()
{
}
/// Reset to empty.
void reset()
{
impl_.reset();
}
/// Reset to contain the specified handler, freeing any current OVERLAPPED
/// object.
template <typename Handler>
void reset(boost::asio::io_service& io_service,
BOOST_ASIO_MOVE_ARG(Handler) handler)
{
impl_.reset(io_service, BOOST_ASIO_MOVE_CAST(Handler)(handler));
}
/// Get the contained OVERLAPPED object.
OVERLAPPED* get()
{
return impl_.get();
}
/// Get the contained OVERLAPPED object.
const OVERLAPPED* get() const
{
return impl_.get();
}
/// Release ownership of the OVERLAPPED object.
OVERLAPPED* release()
{
return impl_.release();
}
/// Post completion notification for overlapped operation. Releases ownership.
void complete(const boost::system::error_code& ec,
std::size_t bytes_transferred)
{
impl_.complete(ec, bytes_transferred);
}
private:
detail::win_iocp_overlapped_ptr impl_;
};
} // namespace windows
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR)
// || defined(GENERATING_DOCUMENTATION)
#endif // BOOST_ASIO_WINDOWS_OVERLAPPED_PTR_HPP
|