110 lines
3.0 KiB
C++
110 lines
3.0 KiB
C++
//
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// impl/execution_context.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_IMPL_EXECUTION_CONTEXT_HPP
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#define ASIO_IMPL_EXECUTION_CONTEXT_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/handler_type_requirements.hpp"
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#include "asio/detail/scoped_ptr.hpp"
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#include "asio/detail/service_registry.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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#if !defined(GENERATING_DOCUMENTATION)
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template <typename Service>
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inline Service& use_service(execution_context& e)
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{
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// Check that Service meets the necessary type requirements.
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(void)static_cast<execution_context::service*>(static_cast<Service*>(0));
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return e.service_registry_->template use_service<Service>();
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}
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#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename Service, typename... Args>
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Service& make_service(execution_context& e, ASIO_MOVE_ARG(Args)... args)
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{
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detail::scoped_ptr<Service> svc(
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new Service(e, ASIO_MOVE_CAST(Args)(args)...));
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e.service_registry_->template add_service<Service>(svc.get());
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Service& result = *svc;
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svc.release();
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return result;
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}
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#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename Service>
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Service& make_service(execution_context& e)
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{
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detail::scoped_ptr<Service> svc(new Service(e));
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e.service_registry_->template add_service<Service>(svc.get());
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Service& result = *svc;
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svc.release();
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return result;
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}
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#define ASIO_PRIVATE_MAKE_SERVICE_DEF(n) \
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template <typename Service, ASIO_VARIADIC_TPARAMS(n)> \
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Service& make_service(execution_context& e, \
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ASIO_VARIADIC_MOVE_PARAMS(n)) \
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{ \
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detail::scoped_ptr<Service> svc( \
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new Service(e, ASIO_VARIADIC_MOVE_ARGS(n))); \
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e.service_registry_->template add_service<Service>(svc.get()); \
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Service& result = *svc; \
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svc.release(); \
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return result; \
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} \
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/**/
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ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_MAKE_SERVICE_DEF)
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#undef ASIO_PRIVATE_MAKE_SERVICE_DEF
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#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename Service>
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inline void add_service(execution_context& e, Service* svc)
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{
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// Check that Service meets the necessary type requirements.
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(void)static_cast<execution_context::service*>(static_cast<Service*>(0));
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e.service_registry_->template add_service<Service>(svc);
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}
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template <typename Service>
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inline bool has_service(execution_context& e)
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{
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// Check that Service meets the necessary type requirements.
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(void)static_cast<execution_context::service*>(static_cast<Service*>(0));
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return e.service_registry_->template has_service<Service>();
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}
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#endif // !defined(GENERATING_DOCUMENTATION)
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inline execution_context& execution_context::service::context()
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{
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return owner_;
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}
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_IMPL_EXECUTION_CONTEXT_HPP
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