123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102 |
- //
- // co_spawn.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_CO_SPAWN_HPP
- #define BOOST_ASIO_CO_SPAWN_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/config.hpp>
- #if defined(BOOST_ASIO_HAS_CO_AWAIT) || defined(GENERATING_DOCUMENTATION)
- #include <boost/asio/awaitable.hpp>
- #include <boost/asio/execution_context.hpp>
- #include <boost/asio/is_executor.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail {
- template <typename T>
- struct awaitable_signature;
- template <typename T, typename Executor>
- struct awaitable_signature<awaitable<T, Executor>>
- {
- typedef void type(std::exception_ptr, T);
- };
- template <typename Executor>
- struct awaitable_signature<awaitable<void, Executor>>
- {
- typedef void type(std::exception_ptr);
- };
- } // namespace detail
- /// Spawn a new thread of execution.
- /**
- * The entry point function object @c f must have the signature:
- *
- * @code awaitable<void, E> f(); @endcode
- *
- * where @c E is convertible from @c Executor.
- */
- template <typename Executor, typename F,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(typename detail::awaitable_signature<
- typename result_of<F()>::type>::type) CompletionToken
- BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_TYPE(Executor)>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(CompletionToken,
- typename detail::awaitable_signature<typename result_of<F()>::type>::type)
- co_spawn(const Executor& ex, F&& f,
- CompletionToken&& token
- BOOST_ASIO_DEFAULT_COMPLETION_TOKEN(Executor),
- typename enable_if<
- is_executor<Executor>::value
- >::type* = 0);
- /// Spawn a new thread of execution.
- /**
- * The entry point function object @c f must have the signature:
- *
- * @code awaitable<void, E> f(); @endcode
- *
- * where @c E is convertible from @c ExecutionContext::executor_type.
- */
- template <typename ExecutionContext, typename F,
- BOOST_ASIO_COMPLETION_TOKEN_FOR(typename detail::awaitable_signature<
- typename result_of<F()>::type>::type) CompletionToken
- BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_TYPE(
- typename ExecutionContext::executor_type)>
- BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(CompletionToken,
- typename detail::awaitable_signature<typename result_of<F()>::type>::type)
- co_spawn(ExecutionContext& ctx, F&& f,
- CompletionToken&& token
- BOOST_ASIO_DEFAULT_COMPLETION_TOKEN(
- typename ExecutionContext::executor_type),
- typename enable_if<
- is_convertible<ExecutionContext&, execution_context&>::value
- >::type* = 0);
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #include <boost/asio/impl/co_spawn.hpp>
- #endif // defined(BOOST_ASIO_HAS_CO_AWAIT) || defined(GENERATING_DOCUMENTATION)
- #endif // BOOST_ASIO_CO_SPAWN_HPP
|