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SyncWebServer/include/asio/execution/bulk_guarantee.hpp

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2024-04-03 09:00:16 +08:00
//
// execution/bulk_guarantee.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2023 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"
#if !defined(ASIO_NO_DEPRECATED)
#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)
# if defined(ASIO_NO_DEPRECATED)
template <typename T>
ASIO_STATIC_CONSTEXPR(bool,
is_applicable_property_v = (
is_executor<T>::value));
# else // defined(ASIO_NO_DEPRECATED)
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_NO_DEPRECATED)
#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)
{
}
template <typename T>
struct proxy
{
#if defined(ASIO_HAS_DEDUCED_QUERY_MEMBER_TRAIT)
struct type
{
template <typename P>
auto query(ASIO_MOVE_ARG(P) p) const
noexcept(
noexcept(
declval<typename conditional<true, T, P>::type>().query(
ASIO_MOVE_CAST(P)(p))
)
)
-> decltype(
declval<typename conditional<true, T, P>::type>().query(
ASIO_MOVE_CAST(P)(p))
);
};
#else // defined(ASIO_HAS_DEDUCED_QUERY_MEMBER_TRAIT)
typedef T type;
#endif // defined(ASIO_HAS_DEDUCED_QUERY_MEMBER_TRAIT)
};
template <typename T>
struct static_proxy
{
#if defined(ASIO_HAS_DEDUCED_QUERY_STATIC_CONSTEXPR_MEMBER_TRAIT)
struct type
{
template <typename P>
static constexpr auto query(ASIO_MOVE_ARG(P) p)
noexcept(
noexcept(
conditional<true, T, P>::type::query(ASIO_MOVE_CAST(P)(p))
)
)
-> decltype(
conditional<true, T, P>::type::query(ASIO_MOVE_CAST(P)(p))
)
{
return T::query(ASIO_MOVE_CAST(P)(p));
}
};
#else // defined(ASIO_HAS_DEDUCED_QUERY_STATIC_CONSTEXPR_MEMBER_TRAIT)
typedef T type;
#endif // defined(ASIO_HAS_DEDUCED_QUERY_STATIC_CONSTEXPR_MEMBER_TRAIT)
};
template <typename T>
struct query_member :
traits::query_member<typename proxy<T>::type, bulk_guarantee_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename static_proxy<T>::type, bulk_guarantee_t> {};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <typename T>
static ASIO_CONSTEXPR
typename query_static_constexpr_member<T>::result_type
static_query()
ASIO_NOEXCEPT_IF((
query_static_constexpr_member<T>::is_noexcept))
{
return query_static_constexpr_member<T>::value();
}
template <typename T>
static ASIO_CONSTEXPR
typename traits::static_query<T, unsequenced_t>::result_type
static_query(
typename enable_if<
!query_static_constexpr_member<T>::is_valid
>::type* = 0,
typename enable_if<
!query_member<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<
!query_static_constexpr_member<T>::is_valid
>::type* = 0,
typename enable_if<
!query_member<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<
!query_static_constexpr_member<T>::is_valid
>::type* = 0,
typename enable_if<
!query_member<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)
# if defined(ASIO_NO_DEPRECATED)
template <typename T>
ASIO_STATIC_CONSTEXPR(bool,
is_applicable_property_v = (
is_executor<T>::value));
# else // defined(ASIO_NO_DEPRECATED)
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_NO_DEPRECATED)
#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()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename bulk_guarantee_t<I>::template proxy<T>::type,
unsequenced_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename bulk_guarantee_t<I>::template static_proxy<T>::type,
unsequenced_t> {};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <typename T>
static ASIO_CONSTEXPR
typename query_static_constexpr_member<T>::result_type
static_query()
ASIO_NOEXCEPT_IF((
query_static_constexpr_member<T>::is_noexcept))
{
return query_static_constexpr_member<T>::value();
}
template <typename T>
static ASIO_CONSTEXPR unsequenced_t static_query(
typename enable_if<
!query_static_constexpr_member<T>::is_valid
>::type* = 0,
typename enable_if<
!query_member<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)
# if defined(ASIO_NO_DEPRECATED)
template <typename T>
ASIO_STATIC_CONSTEXPR(bool,
is_applicable_property_v = (
is_executor<T>::value));
# else // defined(ASIO_NO_DEPRECATED)
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_NO_DEPRECATED)
#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()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename bulk_guarantee_t<I>::template proxy<T>::type,
sequenced_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename bulk_guarantee_t<I>::template static_proxy<T>::type,
sequenced_t> {};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <typename T>
static ASIO_CONSTEXPR
typename query_static_constexpr_member<T>::result_type
static_query()
ASIO_NOEXCEPT_IF((
query_static_constexpr_member<T>::is_noexcept))
{
return query_static_constexpr_member<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)
# if defined(ASIO_NO_DEPRECATED)
template <typename T>
ASIO_STATIC_CONSTEXPR(bool,
is_applicable_property_v = (
is_executor<T>::value));
# else // defined(ASIO_NO_DEPRECATED)
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_NO_DEPRECATED)
#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()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename bulk_guarantee_t<I>::template proxy<T>::type,
parallel_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename bulk_guarantee_t<I>::template static_proxy<T>::type,
parallel_t> {};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <typename T>
static ASIO_CONSTEXPR
typename query_static_constexpr_member<T>::result_type
static_query()
ASIO_NOEXCEPT_IF((
query_static_constexpr_member<T>::is_noexcept))
{
return query_static_constexpr_member<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<
execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef typename execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::bulk_guarantee_t,
typename enable_if<
!execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::bulk_guarantee_t<0>::
query_member<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<
!execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::bulk_guarantee_t<0>::
query_member<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<
!execution::detail::bulk_guarantee_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::bulk_guarantee_t<0>::
query_member<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<
execution::detail::bulk_guarantee::unsequenced_t<0>::
query_static_constexpr_member<T>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef typename execution::detail::bulk_guarantee::unsequenced_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::bulk_guarantee::unsequenced_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::bulk_guarantee_t::unsequenced_t,
typename enable_if<
!execution::detail::bulk_guarantee::unsequenced_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::bulk_guarantee::unsequenced_t<0>::
query_member<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<
execution::detail::bulk_guarantee::sequenced_t<0>::
query_static_constexpr_member<T>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef typename execution::detail::bulk_guarantee::sequenced_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::bulk_guarantee::sequenced_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::bulk_guarantee_t::parallel_t,
typename enable_if<
execution::detail::bulk_guarantee::parallel_t<0>::
query_static_constexpr_member<T>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef typename execution::detail::bulk_guarantee::parallel_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::bulk_guarantee::parallel_t<0>::
query_static_constexpr_member<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 // !defined(ASIO_NO_DEPRECATED)
#endif // ASIO_EXECUTION_BULK_GUARANTEE_HPP