1 | // |
2 | // detail/impl/task_io_service.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_IMPL_TASK_IO_SERVICE_HPP |
12 | #define BOOST_ASIO_DETAIL_IMPL_TASK_IO_SERVICE_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/addressof.hpp> |
19 | #include <boost/asio/detail/completion_handler.hpp> |
20 | #include <boost/asio/detail/fenced_block.hpp> |
21 | #include <boost/asio/detail/handler_alloc_helpers.hpp> |
22 | #include <boost/asio/detail/handler_cont_helpers.hpp> |
23 | #include <boost/asio/detail/handler_invoke_helpers.hpp> |
24 | |
25 | #include <boost/asio/detail/push_options.hpp> |
26 | |
27 | namespace boost { |
28 | namespace asio { |
29 | namespace detail { |
30 | |
31 | template <typename Handler> |
32 | void task_io_service::dispatch(Handler& handler) |
33 | { |
34 | if (thread_call_stack::contains(k: this)) |
35 | { |
36 | fenced_block b(fenced_block::full); |
37 | boost_asio_handler_invoke_helpers::invoke(handler, handler); |
38 | } |
39 | else |
40 | { |
41 | // Allocate and construct an operation to wrap the handler. |
42 | typedef completion_handler<Handler> op; |
43 | typename op::ptr p = { boost::asio::detail::addressof(handler), |
44 | boost_asio_handler_alloc_helpers::allocate( |
45 | sizeof(op), handler), 0 }; |
46 | p.p = new (p.v) op(handler); |
47 | |
48 | BOOST_ASIO_HANDLER_CREATION((p.p, "io_service" , this, "dispatch" )); |
49 | |
50 | do_dispatch(op: p.p); |
51 | p.v = p.p = 0; |
52 | } |
53 | } |
54 | |
55 | template <typename Handler> |
56 | void task_io_service::post(Handler& handler) |
57 | { |
58 | bool is_continuation = |
59 | boost_asio_handler_cont_helpers::is_continuation(handler); |
60 | |
61 | // Allocate and construct an operation to wrap the handler. |
62 | typedef completion_handler<Handler> op; |
63 | typename op::ptr p = { boost::asio::detail::addressof(handler), |
64 | boost_asio_handler_alloc_helpers::allocate( |
65 | sizeof(op), handler), 0 }; |
66 | p.p = new (p.v) op(handler); |
67 | |
68 | BOOST_ASIO_HANDLER_CREATION((p.p, "io_service" , this, "post" )); |
69 | |
70 | post_immediate_completion(op: p.p, is_continuation); |
71 | p.v = p.p = 0; |
72 | } |
73 | |
74 | } // namespace detail |
75 | } // namespace asio |
76 | } // namespace boost |
77 | |
78 | #include <boost/asio/detail/pop_options.hpp> |
79 | |
80 | #endif // BOOST_ASIO_DETAIL_IMPL_TASK_IO_SERVICE_HPP |
81 | |