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1 | // | |
2 | // detail/win_iocp_operation.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 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_OPERATION_HPP | |
12 | #define BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_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/handler_tracking.hpp> | |
23 | #include <boost/asio/detail/op_queue.hpp> | |
24 | #include <boost/asio/detail/socket_types.hpp> | |
25 | #include <boost/system/error_code.hpp> | |
26 | ||
27 | #include <boost/asio/detail/push_options.hpp> | |
28 | ||
29 | namespace boost { | |
30 | namespace asio { | |
31 | namespace detail { | |
32 | ||
33 | class win_iocp_io_service; | |
34 | ||
35 | // Base class for all operations. A function pointer is used instead of virtual | |
36 | // functions to avoid the associated overhead. | |
37 | class win_iocp_operation | |
38 | : public OVERLAPPED | |
39 | BOOST_ASIO_ALSO_INHERIT_TRACKED_HANDLER | |
40 | { | |
41 | public: | |
42 | void complete(win_iocp_io_service& owner, | |
43 | const boost::system::error_code& ec, | |
44 | std::size_t bytes_transferred) | |
45 | { | |
46 | func_(&owner, this, ec, bytes_transferred); | |
47 | } | |
48 | ||
49 | void destroy() | |
50 | { | |
51 | func_(0, this, boost::system::error_code(), 0); | |
52 | } | |
53 | ||
54 | protected: | |
55 | typedef void (*func_type)( | |
56 | win_iocp_io_service*, win_iocp_operation*, | |
57 | const boost::system::error_code&, std::size_t); | |
58 | ||
59 | win_iocp_operation(func_type func) | |
60 | : next_(0), | |
61 | func_(func) | |
62 | { | |
63 | reset(); | |
64 | } | |
65 | ||
66 | // Prevents deletion through this type. | |
67 | ~win_iocp_operation() | |
68 | { | |
69 | } | |
70 | ||
71 | void reset() | |
72 | { | |
73 | Internal = 0; | |
74 | InternalHigh = 0; | |
75 | Offset = 0; | |
76 | OffsetHigh = 0; | |
77 | hEvent = 0; | |
78 | ready_ = 0; | |
79 | } | |
80 | ||
81 | private: | |
82 | friend class op_queue_access; | |
83 | friend class win_iocp_io_service; | |
84 | win_iocp_operation* next_; | |
85 | func_type func_; | |
86 | long ready_; | |
87 | }; | |
88 | ||
89 | } // namespace detail | |
90 | } // namespace asio | |
91 | } // namespace boost | |
92 | ||
93 | #include <boost/asio/detail/pop_options.hpp> | |
94 | ||
95 | #endif // defined(BOOST_ASIO_HAS_IOCP) | |
96 | ||
97 | #endif // BOOST_ASIO_DETAIL_WIN_IOCP_OPERATION_HPP |