| // |
| // impl/execution_context.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2021 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 ASIO_IMPL_EXECUTION_CONTEXT_HPP |
| #define ASIO_IMPL_EXECUTION_CONTEXT_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/handler_type_requirements.hpp" |
| #include "asio/detail/scoped_ptr.hpp" |
| #include "asio/detail/service_registry.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| |
| #if !defined(GENERATING_DOCUMENTATION) |
| |
| template <typename Service> |
| inline Service& use_service(execution_context& e) |
| { |
| // Check that Service meets the necessary type requirements. |
| (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); |
| |
| return e.service_registry_->template use_service<Service>(); |
| } |
| |
| #if defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename Service, typename... Args> |
| Service& make_service(execution_context& e, ASIO_MOVE_ARG(Args)... args) |
| { |
| detail::scoped_ptr<Service> svc( |
| new Service(e, ASIO_MOVE_CAST(Args)(args)...)); |
| e.service_registry_->template add_service<Service>(svc.get()); |
| Service& result = *svc; |
| svc.release(); |
| return result; |
| } |
| |
| #else // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename Service> |
| Service& make_service(execution_context& e) |
| { |
| detail::scoped_ptr<Service> svc(new Service(e)); |
| e.service_registry_->template add_service<Service>(svc.get()); |
| Service& result = *svc; |
| svc.release(); |
| return result; |
| } |
| |
| #define ASIO_PRIVATE_MAKE_SERVICE_DEF(n) \ |
| template <typename Service, ASIO_VARIADIC_TPARAMS(n)> \ |
| Service& make_service(execution_context& e, \ |
| ASIO_VARIADIC_MOVE_PARAMS(n)) \ |
| { \ |
| detail::scoped_ptr<Service> svc( \ |
| new Service(e, ASIO_VARIADIC_MOVE_ARGS(n))); \ |
| e.service_registry_->template add_service<Service>(svc.get()); \ |
| Service& result = *svc; \ |
| svc.release(); \ |
| return result; \ |
| } \ |
| /**/ |
| ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_MAKE_SERVICE_DEF) |
| #undef ASIO_PRIVATE_MAKE_SERVICE_DEF |
| |
| #endif // defined(ASIO_HAS_VARIADIC_TEMPLATES) |
| |
| template <typename Service> |
| inline void add_service(execution_context& e, Service* svc) |
| { |
| // Check that Service meets the necessary type requirements. |
| (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); |
| |
| e.service_registry_->template add_service<Service>(svc); |
| } |
| |
| template <typename Service> |
| inline bool has_service(execution_context& e) |
| { |
| // Check that Service meets the necessary type requirements. |
| (void)static_cast<execution_context::service*>(static_cast<Service*>(0)); |
| |
| return e.service_registry_->template has_service<Service>(); |
| } |
| |
| #endif // !defined(GENERATING_DOCUMENTATION) |
| |
| inline execution_context& execution_context::service::context() |
| { |
| return owner_; |
| } |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_IMPL_EXECUTION_CONTEXT_HPP |