| // |
| // execution/bulk_guarantee.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2020 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_BULK_GUARANTEE_HPP |
| #define ASIO_EXECUTION_BULK_GUARANTEE_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/executor.hpp" |
| #include "asio/execution/scheduler.hpp" |
| #include "asio/execution/sender.hpp" |
| #include "asio/is_applicable_property.hpp" |
| #include "asio/query.hpp" |
| #include "asio/traits/query_free.hpp" |
| #include "asio/traits/query_member.hpp" |
| #include "asio/traits/query_static_constexpr_member.hpp" |
| #include "asio/traits/static_query.hpp" |
| #include "asio/traits/static_require.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| |
| #if defined(GENERATING_DOCUMENTATION) |
| |
| namespace execution { |
| |
| /// A property to communicate the forward progress and ordering guarantees of |
| /// execution agents associated with the bulk execution. |
| struct bulk_guarantee_t |
| { |
| /// The bulk_guarantee_t property applies to executors, senders, and |
| /// schedulers. |
| template <typename T> |
| static constexpr bool is_applicable_property_v = |
| is_executor_v<T> || is_sender_v<T> || is_scheduler_v<T>; |
| |
| /// The top-level bulk_guarantee_t property cannot be required. |
| static constexpr bool is_requirable = false; |
| |
| /// The top-level bulk_guarantee_t property cannot be preferred. |
| static constexpr bool is_preferable = false; |
| |
| /// The type returned by queries against an @c any_executor. |
| typedef bulk_guarantee_t polymorphic_query_result_type; |
| |
| /// A sub-property that indicates that execution agents within the same bulk |
| /// execution may be parallelised and vectorised. |
| struct unsequenced_t |
| { |
| /// The bulk_guarantee_t::unsequenced_t property applies to executors, |
| /// senders, and schedulers. |
| template <typename T> |
| static constexpr bool is_applicable_property_v = |
| is_executor_v<T> || is_sender_v<T> || is_scheduler_v<T>; |
| |
| /// The bulk_guarantee_t::unsequenced_t property can be required. |
| static constexpr bool is_requirable = true; |
| |
| /// The bulk_guarantee_t::unsequenced_t property can be preferred. |
| static constexpr bool is_preferable = true; |
| |
| /// The type returned by queries against an @c any_executor. |
| typedef bulk_guarantee_t polymorphic_query_result_type; |
| |
| /// Default constructor. |
| constexpr unsequenced_t(); |
| |
| /// Get the value associated with a property object. |
| /** |
| * @returns unsequenced_t(); |
| */ |
| static constexpr bulk_guarantee_t value(); |
| }; |
| |
| /// A sub-property that indicates that execution agents within the same bulk |
| /// execution may not be parallelised and vectorised. |
| struct sequenced_t |
| { |
| /// The bulk_guarantee_t::sequenced_t property applies to executors, |
| /// senders, and schedulers. |
| template <typename T> |
| static constexpr bool is_applicable_property_v = |
| is_executor_v<T> || is_sender_v<T> || is_scheduler_v<T>; |
| |
| /// The bulk_guarantee_t::sequenced_t property can be required. |
| static constexpr bool is_requirable = true; |
| |
| /// The bulk_guarantee_t::sequenced_t property can be preferred. |
| static constexpr bool is_preferable = true; |
| |
| /// The type returned by queries against an @c any_executor. |
| typedef bulk_guarantee_t polymorphic_query_result_type; |
| |
| /// Default constructor. |
| constexpr sequenced_t(); |
| |
| /// Get the value associated with a property object. |
| /** |
| * @returns sequenced_t(); |
| */ |
| static constexpr bulk_guarantee_t value(); |
| }; |
| |
| /// A sub-property that indicates that execution agents within the same bulk |
| /// execution may be parallelised. |
| struct parallel_t |
| { |
| /// The bulk_guarantee_t::parallel_t property applies to executors, |
| /// senders, and schedulers. |
| template <typename T> |
| static constexpr bool is_applicable_property_v = |
| is_executor_v<T> || is_sender_v<T> || is_scheduler_v<T>; |
| |
| /// The bulk_guarantee_t::parallel_t property can be required. |
| static constexpr bool is_requirable = true; |
| |
| /// The bulk_guarantee_t::parallel_t property can be preferred. |
| static constexpr bool is_preferable = true; |
| |
| /// The type returned by queries against an @c any_executor. |
| typedef bulk_guarantee_t polymorphic_query_result_type; |
| |
| /// Default constructor. |
| constexpr parallel_t(); |
| |
| /// Get the value associated with a property object. |
| /** |
| * @returns parallel_t(); |
| */ |
| static constexpr bulk_guarantee_t value(); |
| }; |
| |
| /// A special value used for accessing the bulk_guarantee_t::unsequenced_t |
| /// property. |
| static constexpr unsequenced_t unsequenced; |
| |
| /// A special value used for accessing the bulk_guarantee_t::sequenced_t |
| /// property. |
| static constexpr sequenced_t sequenced; |
| |
| /// A special value used for accessing the bulk_guarantee_t::parallel_t |
| /// property. |
| static constexpr parallel_t parallel; |
| |
| /// Default constructor. |
| constexpr bulk_guarantee_t(); |
| |
| /// Construct from a sub-property value. |
| constexpr bulk_guarantee_t(unsequenced_t); |
| |
| /// Construct from a sub-property value. |
| constexpr bulk_guarantee_t(sequenced_t); |
| |
| /// Construct from a sub-property value. |
| constexpr bulk_guarantee_t(parallel_t); |
| |
| /// Compare property values for equality. |
| friend constexpr bool operator==( |
| const bulk_guarantee_t& a, const bulk_guarantee_t& b) noexcept; |
| |
| /// Compare property values for inequality. |
| friend constexpr bool operator!=( |
| const bulk_guarantee_t& a, const bulk_guarantee_t& b) noexcept; |
| }; |
| |
| /// A special value used for accessing the bulk_guarantee_t property. |
| constexpr bulk_guarantee_t bulk_guarantee; |
| |
| } // namespace execution |
| |
| #else // defined(GENERATING_DOCUMENTATION) |
| |
| namespace execution { |
| namespace detail { |
| namespace bulk_guarantee { |
| |
| template <int I> struct unsequenced_t; |
| template <int I> struct sequenced_t; |
| template <int I> struct parallel_t; |
| |
| } // namespace bulk_guarantee |
| |
| template <int I = 0> |
| struct bulk_guarantee_t |
| { |
| #if defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| template <typename T> |
| ASIO_STATIC_CONSTEXPR(bool, |
| is_applicable_property_v = ( |
| is_executor<T>::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_sender<T> |
| >::type::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_scheduler<T> |
| >::type::value)); |
| #endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| ASIO_STATIC_CONSTEXPR(bool, is_requirable = false); |
| ASIO_STATIC_CONSTEXPR(bool, is_preferable = false); |
| typedef bulk_guarantee_t polymorphic_query_result_type; |
| |
| typedef detail::bulk_guarantee::unsequenced_t<I> unsequenced_t; |
| typedef detail::bulk_guarantee::sequenced_t<I> sequenced_t; |
| typedef detail::bulk_guarantee::parallel_t<I> parallel_t; |
| |
| ASIO_CONSTEXPR bulk_guarantee_t() |
| : value_(-1) |
| { |
| } |
| |
| ASIO_CONSTEXPR bulk_guarantee_t(unsequenced_t) |
| : value_(0) |
| { |
| } |
| |
| ASIO_CONSTEXPR bulk_guarantee_t(sequenced_t) |
| : value_(1) |
| { |
| } |
| |
| ASIO_CONSTEXPR bulk_guarantee_t(parallel_t) |
| : value_(2) |
| { |
| } |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::query_static_constexpr_member< |
| T, bulk_guarantee_t>::result_type |
| static_query() |
| ASIO_NOEXCEPT_IF(( |
| traits::query_static_constexpr_member<T, bulk_guarantee_t>::is_noexcept)) |
| { |
| return traits::query_static_constexpr_member<T, bulk_guarantee_t>::value(); |
| } |
| |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::static_query<T, unsequenced_t>::result_type |
| static_query( |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::query_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| traits::static_query<T, unsequenced_t>::is_valid |
| >::type* = 0) ASIO_NOEXCEPT |
| { |
| return traits::static_query<T, unsequenced_t>::value(); |
| } |
| |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::static_query<T, sequenced_t>::result_type |
| static_query( |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::query_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::static_query<T, unsequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| traits::static_query<T, sequenced_t>::is_valid |
| >::type* = 0) ASIO_NOEXCEPT |
| { |
| return traits::static_query<T, sequenced_t>::value(); |
| } |
| |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::static_query<T, parallel_t>::result_type |
| static_query( |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::query_member<T, bulk_guarantee_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::static_query<T, unsequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::static_query<T, sequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| traits::static_query<T, parallel_t>::is_valid |
| >::type* = 0) ASIO_NOEXCEPT |
| { |
| return traits::static_query<T, parallel_t>::value(); |
| } |
| |
| template <typename E, |
| typename T = decltype(bulk_guarantee_t::static_query<E>())> |
| static ASIO_CONSTEXPR const T static_query_v |
| = bulk_guarantee_t::static_query<E>(); |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const bulk_guarantee_t& a, const bulk_guarantee_t& b) |
| { |
| return a.value_ == b.value_; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const bulk_guarantee_t& a, const bulk_guarantee_t& b) |
| { |
| return a.value_ != b.value_; |
| } |
| |
| struct convertible_from_bulk_guarantee_t |
| { |
| ASIO_CONSTEXPR convertible_from_bulk_guarantee_t(bulk_guarantee_t) {} |
| }; |
| |
| template <typename Executor> |
| friend ASIO_CONSTEXPR bulk_guarantee_t query( |
| const Executor& ex, convertible_from_bulk_guarantee_t, |
| typename enable_if< |
| can_query<const Executor&, unsequenced_t>::value |
| >::type* = 0) |
| #if !defined(__clang__) // Clang crashes if noexcept is used here. |
| #if defined(ASIO_MSVC) // Visual C++ wants the type to be qualified. |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, |
| bulk_guarantee_t<>::unsequenced_t>::value)) |
| #else // defined(ASIO_MSVC) |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, unsequenced_t>::value)) |
| #endif // defined(ASIO_MSVC) |
| #endif // !defined(__clang__) |
| { |
| return asio::query(ex, unsequenced_t()); |
| } |
| |
| template <typename Executor> |
| friend ASIO_CONSTEXPR bulk_guarantee_t query( |
| const Executor& ex, convertible_from_bulk_guarantee_t, |
| typename enable_if< |
| !can_query<const Executor&, unsequenced_t>::value |
| >::type* = 0, |
| typename enable_if< |
| can_query<const Executor&, sequenced_t>::value |
| >::type* = 0) |
| #if !defined(__clang__) // Clang crashes if noexcept is used here. |
| #if defined(ASIO_MSVC) // Visual C++ wants the type to be qualified. |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, |
| bulk_guarantee_t<>::sequenced_t>::value)) |
| #else // defined(ASIO_MSVC) |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, sequenced_t>::value)) |
| #endif // defined(ASIO_MSVC) |
| #endif // !defined(__clang__) |
| { |
| return asio::query(ex, sequenced_t()); |
| } |
| |
| template <typename Executor> |
| friend ASIO_CONSTEXPR bulk_guarantee_t query( |
| const Executor& ex, convertible_from_bulk_guarantee_t, |
| typename enable_if< |
| !can_query<const Executor&, unsequenced_t>::value |
| >::type* = 0, |
| typename enable_if< |
| !can_query<const Executor&, sequenced_t>::value |
| >::type* = 0, |
| typename enable_if< |
| can_query<const Executor&, parallel_t>::value |
| >::type* = 0) |
| #if !defined(__clang__) // Clang crashes if noexcept is used here. |
| #if defined(ASIO_MSVC) // Visual C++ wants the type to be qualified. |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, bulk_guarantee_t<>::parallel_t>::value)) |
| #else // defined(ASIO_MSVC) |
| ASIO_NOEXCEPT_IF(( |
| is_nothrow_query<const Executor&, parallel_t>::value)) |
| #endif // defined(ASIO_MSVC) |
| #endif // !defined(__clang__) |
| { |
| return asio::query(ex, parallel_t()); |
| } |
| |
| ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(unsequenced_t, unsequenced); |
| ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(sequenced_t, sequenced); |
| ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(parallel_t, parallel); |
| |
| #if !defined(ASIO_HAS_CONSTEXPR) |
| static const bulk_guarantee_t instance; |
| #endif // !defined(ASIO_HAS_CONSTEXPR) |
| |
| private: |
| int value_; |
| }; |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <int I> template <typename E, typename T> |
| const T bulk_guarantee_t<I>::static_query_v; |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| #if !defined(ASIO_HAS_CONSTEXPR) |
| template <int I> |
| const bulk_guarantee_t<I> bulk_guarantee_t<I>::instance; |
| #endif |
| |
| template <int I> |
| const typename bulk_guarantee_t<I>::unsequenced_t |
| bulk_guarantee_t<I>::unsequenced; |
| |
| template <int I> |
| const typename bulk_guarantee_t<I>::sequenced_t |
| bulk_guarantee_t<I>::sequenced; |
| |
| template <int I> |
| const typename bulk_guarantee_t<I>::parallel_t |
| bulk_guarantee_t<I>::parallel; |
| |
| namespace bulk_guarantee { |
| |
| template <int I = 0> |
| struct unsequenced_t |
| { |
| #if defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| template <typename T> |
| ASIO_STATIC_CONSTEXPR(bool, |
| is_applicable_property_v = ( |
| is_executor<T>::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_sender<T> |
| >::type::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_scheduler<T> |
| >::type::value)); |
| #endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| ASIO_STATIC_CONSTEXPR(bool, is_requirable = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_preferable = true); |
| typedef bulk_guarantee_t<I> polymorphic_query_result_type; |
| |
| ASIO_CONSTEXPR unsequenced_t() |
| { |
| } |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::query_static_constexpr_member<T, unsequenced_t>::result_type |
| static_query() |
| ASIO_NOEXCEPT_IF(( |
| traits::query_static_constexpr_member<T, unsequenced_t>::is_noexcept)) |
| { |
| return traits::query_static_constexpr_member<T, unsequenced_t>::value(); |
| } |
| |
| template <typename T> |
| static ASIO_CONSTEXPR unsequenced_t static_query( |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, unsequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::query_member<T, unsequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !traits::query_free<T, unsequenced_t>::is_valid |
| >::type* = 0, |
| typename enable_if< |
| !can_query<T, sequenced_t<I> >::value |
| >::type* = 0, |
| typename enable_if< |
| !can_query<T, parallel_t<I> >::value |
| >::type* = 0) ASIO_NOEXCEPT |
| { |
| return unsequenced_t(); |
| } |
| |
| template <typename E, typename T = decltype(unsequenced_t::static_query<E>())> |
| static ASIO_CONSTEXPR const T static_query_v |
| = unsequenced_t::static_query<E>(); |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| static ASIO_CONSTEXPR bulk_guarantee_t<I> value() |
| { |
| return unsequenced_t(); |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const unsequenced_t&, const unsequenced_t&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const unsequenced_t&, const unsequenced_t&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const unsequenced_t&, const sequenced_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const unsequenced_t&, const sequenced_t<I>&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const unsequenced_t&, const parallel_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const unsequenced_t&, const parallel_t<I>&) |
| { |
| return true; |
| } |
| }; |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <int I> template <typename E, typename T> |
| const T unsequenced_t<I>::static_query_v; |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| template <int I = 0> |
| struct sequenced_t |
| { |
| #if defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| template <typename T> |
| ASIO_STATIC_CONSTEXPR(bool, |
| is_applicable_property_v = ( |
| is_executor<T>::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_sender<T> |
| >::type::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_scheduler<T> |
| >::type::value)); |
| #endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| ASIO_STATIC_CONSTEXPR(bool, is_requirable = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_preferable = true); |
| typedef bulk_guarantee_t<I> polymorphic_query_result_type; |
| |
| ASIO_CONSTEXPR sequenced_t() |
| { |
| } |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::query_static_constexpr_member<T, sequenced_t>::result_type |
| static_query() |
| ASIO_NOEXCEPT_IF(( |
| traits::query_static_constexpr_member<T, sequenced_t>::is_noexcept)) |
| { |
| return traits::query_static_constexpr_member<T, sequenced_t>::value(); |
| } |
| |
| template <typename E, typename T = decltype(sequenced_t::static_query<E>())> |
| static ASIO_CONSTEXPR const T static_query_v |
| = sequenced_t::static_query<E>(); |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| static ASIO_CONSTEXPR bulk_guarantee_t<I> value() |
| { |
| return sequenced_t(); |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const sequenced_t&, const sequenced_t&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const sequenced_t&, const sequenced_t&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const sequenced_t&, const unsequenced_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const sequenced_t&, const unsequenced_t<I>&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const sequenced_t&, const parallel_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const sequenced_t&, const parallel_t<I>&) |
| { |
| return true; |
| } |
| }; |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <int I> template <typename E, typename T> |
| const T sequenced_t<I>::static_query_v; |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| template <int I> |
| struct parallel_t |
| { |
| #if defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| template <typename T> |
| ASIO_STATIC_CONSTEXPR(bool, |
| is_applicable_property_v = ( |
| is_executor<T>::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_sender<T> |
| >::type::value |
| || conditional< |
| is_executor<T>::value, |
| false_type, |
| is_scheduler<T> |
| >::type::value)); |
| #endif // defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| ASIO_STATIC_CONSTEXPR(bool, is_requirable = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_preferable = true); |
| typedef bulk_guarantee_t<I> polymorphic_query_result_type; |
| |
| ASIO_CONSTEXPR parallel_t() |
| { |
| } |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <typename T> |
| static ASIO_CONSTEXPR |
| typename traits::query_static_constexpr_member<T, parallel_t>::result_type |
| static_query() |
| ASIO_NOEXCEPT_IF(( |
| traits::query_static_constexpr_member<T, parallel_t>::is_noexcept)) |
| { |
| return traits::query_static_constexpr_member<T, parallel_t>::value(); |
| } |
| |
| template <typename E, typename T = decltype(parallel_t::static_query<E>())> |
| static ASIO_CONSTEXPR const T static_query_v |
| = parallel_t::static_query<E>(); |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| static ASIO_CONSTEXPR bulk_guarantee_t<I> value() |
| { |
| return parallel_t(); |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const parallel_t&, const parallel_t&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const parallel_t&, const parallel_t&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const parallel_t&, const unsequenced_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const parallel_t&, const unsequenced_t<I>&) |
| { |
| return true; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator==( |
| const parallel_t&, const sequenced_t<I>&) |
| { |
| return false; |
| } |
| |
| friend ASIO_CONSTEXPR bool operator!=( |
| const parallel_t&, const sequenced_t<I>&) |
| { |
| return true; |
| } |
| }; |
| |
| #if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| template <int I> template <typename E, typename T> |
| const T parallel_t<I>::static_query_v; |
| #endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| } // namespace bulk_guarantee |
| } // namespace detail |
| |
| typedef detail::bulk_guarantee_t<> bulk_guarantee_t; |
| |
| #if defined(ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION) |
| constexpr bulk_guarantee_t bulk_guarantee; |
| #else // defined(ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION) |
| namespace { static const bulk_guarantee_t& |
| bulk_guarantee = bulk_guarantee_t::instance; } |
| #endif |
| |
| } // namespace execution |
| |
| #if !defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| template <typename T> |
| struct is_applicable_property<T, execution::bulk_guarantee_t> |
| : integral_constant<bool, |
| execution::is_executor<T>::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_sender<T> |
| >::type::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_scheduler<T> |
| >::type::value> |
| { |
| }; |
| |
| template <typename T> |
| struct is_applicable_property<T, execution::bulk_guarantee_t::unsequenced_t> |
| : integral_constant<bool, |
| execution::is_executor<T>::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_sender<T> |
| >::type::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_scheduler<T> |
| >::type::value> |
| { |
| }; |
| |
| template <typename T> |
| struct is_applicable_property<T, execution::bulk_guarantee_t::sequenced_t> |
| : integral_constant<bool, |
| execution::is_executor<T>::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_sender<T> |
| >::type::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_scheduler<T> |
| >::type::value> |
| { |
| }; |
| |
| template <typename T> |
| struct is_applicable_property<T, execution::bulk_guarantee_t::parallel_t> |
| : integral_constant<bool, |
| execution::is_executor<T>::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_sender<T> |
| >::type::value |
| || conditional< |
| execution::is_executor<T>::value, |
| false_type, |
| execution::is_scheduler<T> |
| >::type::value> |
| { |
| }; |
| |
| #endif // !defined(ASIO_HAS_VARIABLE_TEMPLATES) |
| |
| namespace traits { |
| |
| #if !defined(ASIO_HAS_DEDUCED_QUERY_FREE_TRAIT) |
| |
| template <typename T> |
| struct query_free_default<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| can_query<T, execution::bulk_guarantee_t::unsequenced_t>::value |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = |
| (is_nothrow_query<T, execution::bulk_guarantee_t::unsequenced_t>::value)); |
| |
| typedef execution::bulk_guarantee_t result_type; |
| }; |
| |
| template <typename T> |
| struct query_free_default<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| !can_query<T, execution::bulk_guarantee_t::unsequenced_t>::value |
| && can_query<T, execution::bulk_guarantee_t::sequenced_t>::value |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = |
| (is_nothrow_query<T, execution::bulk_guarantee_t::sequenced_t>::value)); |
| |
| typedef execution::bulk_guarantee_t result_type; |
| }; |
| |
| template <typename T> |
| struct query_free_default<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| !can_query<T, execution::bulk_guarantee_t::unsequenced_t>::value |
| && !can_query<T, execution::bulk_guarantee_t::sequenced_t>::value |
| && can_query<T, execution::bulk_guarantee_t::parallel_t>::value |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = |
| (is_nothrow_query<T, execution::bulk_guarantee_t::parallel_t>::value)); |
| |
| typedef execution::bulk_guarantee_t result_type; |
| }; |
| |
| #endif // !defined(ASIO_HAS_DEDUCED_QUERY_FREE_TRAIT) |
| |
| #if !defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \ |
| || !defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && !traits::query_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && traits::static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && !traits::query_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && !traits::static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| && traits::static_query<T, |
| execution::bulk_guarantee_t::sequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::static_query<T, |
| execution::bulk_guarantee_t::sequenced_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::static_query<T, |
| execution::bulk_guarantee_t::sequenced_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t, |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && !traits::query_member<T, |
| execution::bulk_guarantee_t>::is_valid |
| && !traits::static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| && !traits::static_query<T, |
| execution::bulk_guarantee_t::sequenced_t>::is_valid |
| && traits::static_query<T, |
| execution::bulk_guarantee_t::parallel_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::static_query<T, |
| execution::bulk_guarantee_t::parallel_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::static_query<T, |
| execution::bulk_guarantee_t::parallel_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t::unsequenced_t, |
| typename enable_if< |
| traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::unsequenced_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::unsequenced_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t::unsequenced_t, |
| typename enable_if< |
| !traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| && !traits::query_member<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| && !traits::query_free<T, |
| execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| && !can_query<T, execution::bulk_guarantee_t::sequenced_t>::value |
| && !can_query<T, execution::bulk_guarantee_t::parallel_t>::value |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef execution::bulk_guarantee_t::unsequenced_t result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return result_type(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t::sequenced_t, |
| typename enable_if< |
| traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::sequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::sequenced_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::sequenced_t>::value(); |
| } |
| }; |
| |
| template <typename T> |
| struct static_query<T, execution::bulk_guarantee_t::parallel_t, |
| typename enable_if< |
| traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::parallel_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = true); |
| ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); |
| |
| typedef typename traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::parallel_t>::result_type result_type; |
| |
| static ASIO_CONSTEXPR result_type value() |
| { |
| return traits::query_static_constexpr_member<T, |
| execution::bulk_guarantee_t::parallel_t>::value(); |
| } |
| }; |
| |
| #endif // !defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) |
| // || !defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES) |
| |
| #if !defined(ASIO_HAS_DEDUCED_STATIC_REQUIRE_TRAIT) |
| |
| template <typename T> |
| struct static_require<T, execution::bulk_guarantee_t::unsequenced_t, |
| typename enable_if< |
| static_query<T, execution::bulk_guarantee_t::unsequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = |
| (is_same<typename static_query<T, |
| execution::bulk_guarantee_t::unsequenced_t>::result_type, |
| execution::bulk_guarantee_t::unsequenced_t>::value)); |
| }; |
| |
| template <typename T> |
| struct static_require<T, execution::bulk_guarantee_t::sequenced_t, |
| typename enable_if< |
| static_query<T, execution::bulk_guarantee_t::sequenced_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = |
| (is_same<typename static_query<T, |
| execution::bulk_guarantee_t::sequenced_t>::result_type, |
| execution::bulk_guarantee_t::sequenced_t>::value)); |
| }; |
| |
| template <typename T> |
| struct static_require<T, execution::bulk_guarantee_t::parallel_t, |
| typename enable_if< |
| static_query<T, execution::bulk_guarantee_t::parallel_t>::is_valid |
| >::type> |
| { |
| ASIO_STATIC_CONSTEXPR(bool, is_valid = |
| (is_same<typename static_query<T, |
| execution::bulk_guarantee_t::parallel_t>::result_type, |
| execution::bulk_guarantee_t::parallel_t>::value)); |
| }; |
| |
| #endif // !defined(ASIO_HAS_DEDUCED_STATIC_REQUIRE_TRAIT) |
| |
| } // namespace traits |
| |
| #endif // defined(GENERATING_DOCUMENTATION) |
| |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_EXECUTION_BULK_GUARANTEE_HPP |
