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Diffstat (limited to '3rdparty/asio/include/asio/execution/executor.hpp')
-rw-r--r-- | 3rdparty/asio/include/asio/execution/executor.hpp | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/execution/executor.hpp b/3rdparty/asio/include/asio/execution/executor.hpp new file mode 100644 index 00000000000..7e05d5a0f8c --- /dev/null +++ b/3rdparty/asio/include/asio/execution/executor.hpp @@ -0,0 +1,252 @@ +// +// execution/executor.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_EXECUTION_EXECUTOR_HPP +#define ASIO_EXECUTION_EXECUTOR_HPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include "asio/detail/config.hpp" +#include "asio/detail/type_traits.hpp" +#include "asio/execution/execute.hpp" +#include "asio/execution/invocable_archetype.hpp" +#include "asio/traits/equality_comparable.hpp" + +#if defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT) \ + && defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT) \ + && defined(ASIO_HAS_DEDUCED_EQUALITY_COMPARABLE_TRAIT) +# define ASIO_HAS_DEDUCED_EXECUTION_IS_EXECUTOR_TRAIT 1 +#endif // defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT) + // && defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT) + // && defined(ASIO_HAS_DEDUCED_EQUALITY_COMPARABLE_TRAIT) + +#include "asio/detail/push_options.hpp" + +namespace asio { +namespace execution { +namespace detail { + +template <typename T, typename F, + typename = void, typename = void, typename = void, typename = void, + typename = void, typename = void, typename = void, typename = void> +struct is_executor_of_impl : false_type +{ +}; + +template <typename T, typename F> +struct is_executor_of_impl<T, F, + typename enable_if< + can_execute<typename add_const<T>::type, F>::value + >::type, + typename void_type< + typename result_of<typename decay<F>::type&()>::type + >::type, + typename enable_if< + is_constructible<typename decay<F>::type, F>::value + >::type, + typename enable_if< + is_move_constructible<typename decay<F>::type>::value + >::type, +#if defined(ASIO_HAS_NOEXCEPT) + typename enable_if< + is_nothrow_copy_constructible<T>::value + >::type, + typename enable_if< + is_nothrow_destructible<T>::value + >::type, +#else // defined(ASIO_HAS_NOEXCEPT) + typename enable_if< + is_copy_constructible<T>::value + >::type, + typename enable_if< + is_destructible<T>::value + >::type, +#endif // defined(ASIO_HAS_NOEXCEPT) + typename enable_if< + traits::equality_comparable<T>::is_valid + >::type, + typename enable_if< + traits::equality_comparable<T>::is_noexcept + >::type> : true_type +{ +}; + +template <typename T, typename = void> +struct executor_shape +{ + typedef std::size_t type; +}; + +template <typename T> +struct executor_shape<T, + typename void_type< + typename T::shape_type + >::type> +{ + typedef typename T::shape_type type; +}; + +template <typename T, typename Default, typename = void> +struct executor_index +{ + typedef Default type; +}; + +template <typename T, typename Default> +struct executor_index<T, Default, + typename void_type< + typename T::index_type + >::type> +{ + typedef typename T::index_type type; +}; + +} // namespace detail + +/// The is_executor trait detects whether a type T satisfies the +/// execution::executor concept. +/** + * Class template @c is_executor is a UnaryTypeTrait that is derived from @c + * true_type if the type @c T meets the concept definition for an executor, + * otherwise @c false_type. + */ +template <typename T> +struct is_executor : +#if defined(GENERATING_DOCUMENTATION) + integral_constant<bool, automatically_determined> +#else // defined(GENERATING_DOCUMENTATION) + detail::is_executor_of_impl<T, invocable_archetype> +#endif // defined(GENERATING_DOCUMENTATION) +{ +}; + +#if defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename T> +ASIO_CONSTEXPR const bool is_executor_v = is_executor<T>::value; + +#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) + +#if defined(ASIO_HAS_CONCEPTS) + +template <typename T> +ASIO_CONCEPT executor = is_executor<T>::value; + +#define ASIO_EXECUTION_EXECUTOR ::asio::execution::executor + +#else // defined(ASIO_HAS_CONCEPTS) + +#define ASIO_EXECUTION_EXECUTOR typename + +#endif // defined(ASIO_HAS_CONCEPTS) + +/// The is_executor_of trait detects whether a type T satisfies the +/// execution::executor_of concept for some set of value arguments. +/** + * Class template @c is_executor_of is a type trait that is derived from @c + * true_type if the type @c T meets the concept definition for an executor + * that is invocable with a function object of type @c F, otherwise @c + * false_type. + */ +template <typename T, typename F> +struct is_executor_of : +#if defined(GENERATING_DOCUMENTATION) + integral_constant<bool, automatically_determined> +#else // defined(GENERATING_DOCUMENTATION) + integral_constant<bool, + is_executor<T>::value && detail::is_executor_of_impl<T, F>::value + > +#endif // defined(GENERATING_DOCUMENTATION) +{ +}; + +#if defined(ASIO_HAS_VARIABLE_TEMPLATES) + +template <typename T, typename F> +ASIO_CONSTEXPR const bool is_executor_of_v = + is_executor_of<T, F>::value; + +#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) + +#if defined(ASIO_HAS_CONCEPTS) + +template <typename T, typename F> +ASIO_CONCEPT executor_of = is_executor_of<T, F>::value; + +#define ASIO_EXECUTION_EXECUTOR_OF(f) \ + ::asio::execution::executor_of<f> + +#else // defined(ASIO_HAS_CONCEPTS) + +#define ASIO_EXECUTION_EXECUTOR_OF typename + +#endif // defined(ASIO_HAS_CONCEPTS) + +/// The executor_shape trait detects the type used by an executor to represent +/// the shape of a bulk operation. +/** + * Class template @c executor_shape is a type trait with a nested type alias + * @c type whose type is @c T::shape_type if @c T::shape_type is valid, + * otherwise @c std::size_t. + */ +template <typename T> +struct executor_shape +#if !defined(GENERATING_DOCUMENTATION) + : detail::executor_shape<T> +#endif // !defined(GENERATING_DOCUMENTATION) +{ +#if defined(GENERATING_DOCUMENTATION) + /// @c T::shape_type if @c T::shape_type is valid, otherwise @c std::size_t. + typedef automatically_determined type; +#endif // defined(GENERATING_DOCUMENTATION) +}; + +#if defined(ASIO_HAS_ALIAS_TEMPLATES) + +template <typename T> +using executor_shape_t = typename executor_shape<T>::type; + +#endif // defined(ASIO_HAS_ALIAS_TEMPLATES) + +/// The executor_index trait detects the type used by an executor to represent +/// an index within a bulk operation. +/** + * Class template @c executor_index is a type trait with a nested type alias + * @c type whose type is @c T::index_type if @c T::index_type is valid, + * otherwise @c executor_shape_t<T>. + */ +template <typename T> +struct executor_index +#if !defined(GENERATING_DOCUMENTATION) + : detail::executor_index<T, typename executor_shape<T>::type> +#endif // !defined(GENERATING_DOCUMENTATION) +{ +#if defined(GENERATING_DOCUMENTATION) + /// @c T::index_type if @c T::index_type is valid, otherwise + /// @c executor_shape_t<T>. + typedef automatically_determined type; +#endif // defined(GENERATING_DOCUMENTATION) +}; + +#if defined(ASIO_HAS_ALIAS_TEMPLATES) + +template <typename T> +using executor_index_t = typename executor_index<T>::type; + +#endif // defined(ASIO_HAS_ALIAS_TEMPLATES) + +} // namespace execution +} // namespace asio + +#include "asio/detail/pop_options.hpp" + +#endif // ASIO_EXECUTION_EXECUTOR_HPP |