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1 | // |
2 | // impl/execution_context.hpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
11fdf7f2 | 5 | // Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
b32b8144 FG |
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_IMPL_EXECUTION_CONTEXT_HPP | |
12 | #define BOOST_ASIO_IMPL_EXECUTION_CONTEXT_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/handler_type_requirements.hpp> | |
19 | #include <boost/asio/detail/scoped_ptr.hpp> | |
20 | #include <boost/asio/detail/service_registry.hpp> | |
21 | ||
22 | #include <boost/asio/detail/push_options.hpp> | |
23 | ||
24 | namespace boost { | |
25 | namespace asio { | |
26 | ||
27 | template <typename Service> | |
28 | inline Service& use_service(execution_context& e) | |
29 | { | |
30 | // Check that Service meets the necessary type requirements. | |
31 | (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); | |
32 | ||
33 | return e.service_registry_->template use_service<Service>(); | |
34 | } | |
35 | ||
36 | #if !defined(GENERATING_DOCUMENTATION) | |
37 | # if defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) | |
38 | ||
39 | template <typename Service, typename... Args> | |
40 | Service& make_service(execution_context& e, BOOST_ASIO_MOVE_ARG(Args)... args) | |
41 | { | |
42 | detail::scoped_ptr<Service> svc( | |
43 | new Service(e, BOOST_ASIO_MOVE_CAST(Args)(args)...)); | |
44 | e.service_registry_->template add_service<Service>(svc.get()); | |
45 | Service& result = *svc; | |
46 | svc.release(); | |
47 | return result; | |
48 | } | |
49 | ||
50 | # else // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) | |
51 | ||
52 | template <typename Service> | |
53 | Service& make_service(execution_context& e) | |
54 | { | |
55 | detail::scoped_ptr<Service> svc(new Service(e)); | |
56 | e.service_registry_->template add_service<Service>(svc.get()); | |
57 | Service& result = *svc; | |
58 | svc.release(); | |
59 | return result; | |
60 | } | |
61 | ||
62 | #define BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF(n) \ | |
63 | template <typename Service, BOOST_ASIO_VARIADIC_TPARAMS(n)> \ | |
64 | Service& make_service(execution_context& e, \ | |
65 | BOOST_ASIO_VARIADIC_MOVE_PARAMS(n)) \ | |
66 | { \ | |
67 | detail::scoped_ptr<Service> svc( \ | |
68 | new Service(e, BOOST_ASIO_VARIADIC_MOVE_ARGS(n))); \ | |
69 | e.service_registry_->template add_service<Service>(svc.get()); \ | |
70 | Service& result = *svc; \ | |
71 | svc.release(); \ | |
72 | return result; \ | |
73 | } \ | |
74 | /**/ | |
75 | BOOST_ASIO_VARIADIC_GENERATE(BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF) | |
76 | #undef BOOST_ASIO_PRIVATE_MAKE_SERVICE_DEF | |
77 | ||
78 | # endif // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) | |
79 | #endif // !defined(GENERATING_DOCUMENTATION) | |
80 | ||
81 | template <typename Service> | |
82 | inline void add_service(execution_context& e, Service* svc) | |
83 | { | |
84 | // Check that Service meets the necessary type requirements. | |
85 | (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); | |
86 | ||
87 | e.service_registry_->template add_service<Service>(svc); | |
88 | } | |
89 | ||
90 | template <typename Service> | |
91 | inline bool has_service(execution_context& e) | |
92 | { | |
93 | // Check that Service meets the necessary type requirements. | |
94 | (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); | |
95 | ||
96 | return e.service_registry_->template has_service<Service>(); | |
97 | } | |
98 | ||
99 | inline execution_context& execution_context::service::context() | |
100 | { | |
101 | return owner_; | |
102 | } | |
103 | ||
104 | } // namespace asio | |
105 | } // namespace boost | |
106 | ||
107 | #include <boost/asio/detail/pop_options.hpp> | |
108 | ||
109 | #endif // BOOST_ASIO_IMPL_EXECUTION_CONTEXT_HPP |