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- //
- // impl/system_executor.hpp
- // ~~~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
- #define BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/executor_op.hpp>
- #include <boost/asio/detail/global.hpp>
- #include <boost/asio/detail/recycling_allocator.hpp>
- #include <boost/asio/detail/type_traits.hpp>
- #include <boost/asio/system_context.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- inline system_context& system_executor::context() const BOOST_ASIO_NOEXCEPT
- {
- return detail::global<system_context>();
- }
- template <typename Function, typename Allocator>
- void system_executor::dispatch(
- BOOST_ASIO_MOVE_ARG(Function) f, const Allocator&) const
- {
- typename decay<Function>::type tmp(BOOST_ASIO_MOVE_CAST(Function)(f));
- boost_asio_handler_invoke_helpers::invoke(tmp, tmp);
- }
- template <typename Function, typename Allocator>
- void system_executor::post(
- BOOST_ASIO_MOVE_ARG(Function) f, const Allocator& a) const
- {
- typedef typename decay<Function>::type function_type;
- system_context& ctx = detail::global<system_context>();
- // Allocate and construct an operation to wrap the function.
- typedef detail::executor_op<function_type, Allocator> op;
- typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
- p.p = new (p.v) op(BOOST_ASIO_MOVE_CAST(Function)(f), a);
- BOOST_ASIO_HANDLER_CREATION((ctx, *p.p,
- "system_executor", &this->context(), 0, "post"));
- ctx.scheduler_.post_immediate_completion(p.p, false);
- p.v = p.p = 0;
- }
- template <typename Function, typename Allocator>
- void system_executor::defer(
- BOOST_ASIO_MOVE_ARG(Function) f, const Allocator& a) const
- {
- typedef typename decay<Function>::type function_type;
- system_context& ctx = detail::global<system_context>();
- // Allocate and construct an operation to wrap the function.
- typedef detail::executor_op<function_type, Allocator> op;
- typename op::ptr p = { detail::addressof(a), op::ptr::allocate(a), 0 };
- p.p = new (p.v) op(BOOST_ASIO_MOVE_CAST(Function)(f), a);
- BOOST_ASIO_HANDLER_CREATION((ctx, *p.p,
- "system_executor", &this->context(), 0, "defer"));
- ctx.scheduler_.post_immediate_completion(p.p, true);
- p.v = p.p = 0;
- }
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #endif // BOOST_ASIO_IMPL_SYSTEM_EXECUTOR_HPP
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