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- //
- // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail 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)
- //
- // Official repository: https://github.com/boostorg/beast
- //
- #ifndef BOOST_BEAST_CORE_DETAIL_BIND_DEFAULT_EXECUTOR_HPP
- #define BOOST_BEAST_CORE_DETAIL_BIND_DEFAULT_EXECUTOR_HPP
- #include <boost/asio/associated_allocator.hpp>
- #include <boost/asio/associated_executor.hpp>
- #include <boost/asio/dispatch.hpp>
- #include <boost/asio/executor.hpp>
- #include <boost/asio/handler_alloc_hook.hpp>
- #include <boost/asio/handler_continuation_hook.hpp>
- #include <boost/asio/handler_invoke_hook.hpp>
- #include <boost/core/empty_value.hpp>
- #include <utility>
- namespace boost {
- namespace beast {
- namespace detail {
- template<class Handler, class Executor>
- class bind_default_executor_wrapper
- : private boost::empty_value<Executor>
- {
- Handler h_;
- public:
- template<class Handler_>
- bind_default_executor_wrapper(
- Handler_&& h,
- Executor const& ex)
- : boost::empty_value<Executor>(
- boost::empty_init_t{}, ex)
- , h_(std::forward<Handler_>(h))
- {
- }
- template<class... Args>
- void
- operator()(Args&&... args)
- {
- h_(std::forward<Args>(args)...);
- }
- using allocator_type =
- net::associated_allocator_t<Handler>;
- allocator_type
- get_allocator() const noexcept
- {
- return net::get_associated_allocator(h_);
- }
- using executor_type =
- net::associated_executor_t<Handler, Executor>;
- executor_type
- get_executor() const noexcept
- {
- return net::get_associated_executor(
- h_, this->get());
- }
- template<class Function>
- void
- asio_handler_invoke(Function&& f,
- bind_default_executor_wrapper* p)
- {
- net::dispatch(p->get_executor(), std::move(f));
- }
- friend
- void* asio_handler_allocate(
- std::size_t size, bind_default_executor_wrapper* p)
- {
- using net::asio_handler_allocate;
- return asio_handler_allocate(
- size, std::addressof(p->h_));
- }
- friend
- void asio_handler_deallocate(
- void* mem, std::size_t size,
- bind_default_executor_wrapper* p)
- {
- using net::asio_handler_deallocate;
- asio_handler_deallocate(mem, size,
- std::addressof(p->h_));
- }
- friend
- bool asio_handler_is_continuation(
- bind_default_executor_wrapper* p)
- {
- using net::asio_handler_is_continuation;
- return asio_handler_is_continuation(
- std::addressof(p->h_));
- }
- };
- template<class Executor, class Handler>
- auto
- bind_default_executor(Executor const& ex, Handler&& h) ->
- bind_default_executor_wrapper<
- typename std::decay<Handler>::type,
- Executor>
- {
- return bind_default_executor_wrapper<
- typename std::decay<Handler>::type,
- Executor>(std::forward<Handler>(h), ex);
- }
- } // detail
- } // beast
- } // boost
- #endif
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