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Insane_DNS/libraries/asio-1.28.1/include/asio/execution/mapping.hpp

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//
// execution/mapping.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_MAPPING_HPP
#define ASIO_EXECUTION_MAPPING_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 describe what guarantees an executor makes about the mapping
/// of execution agents on to threads of execution.
struct mapping_t
{
/// The mapping_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 mapping_t property cannot be required.
static constexpr bool is_requirable = false;
/// The top-level mapping_t property cannot be preferred.
static constexpr bool is_preferable = false;
/// The type returned by queries against an @c any_executor.
typedef mapping_t polymorphic_query_result_type;
/// A sub-property that indicates that execution agents are mapped on to
/// threads of execution.
struct thread_t
{
/// The mapping_t::thread_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 mapping_t::thread_t property can be required.
static constexpr bool is_requirable = true;
/// The mapping_t::thread_t property can be preferred.
static constexpr bool is_preferable = true;
/// The type returned by queries against an @c any_executor.
typedef mapping_t polymorphic_query_result_type;
/// Default constructor.
constexpr thread_t();
/// Get the value associated with a property object.
/**
* @returns thread_t();
*/
static constexpr mapping_t value();
};
/// A sub-property that indicates that execution agents are mapped on to
/// new threads of execution.
struct new_thread_t
{
/// The mapping_t::new_thread_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 mapping_t::new_thread_t property can be required.
static constexpr bool is_requirable = true;
/// The mapping_t::new_thread_t property can be preferred.
static constexpr bool is_preferable = true;
/// The type returned by queries against an @c any_executor.
typedef mapping_t polymorphic_query_result_type;
/// Default constructor.
constexpr new_thread_t();
/// Get the value associated with a property object.
/**
* @returns new_thread_t();
*/
static constexpr mapping_t value();
};
/// A sub-property that indicates that the mapping of execution agents is
/// implementation-defined.
struct other_t
{
/// The mapping_t::other_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 mapping_t::other_t property can be required.
static constexpr bool is_requirable = true;
/// The mapping_t::other_t property can be preferred.
static constexpr bool is_preferable = true;
/// The type returned by queries against an @c any_executor.
typedef mapping_t polymorphic_query_result_type;
/// Default constructor.
constexpr other_t();
/// Get the value associated with a property object.
/**
* @returns other_t();
*/
static constexpr mapping_t value();
};
/// A special value used for accessing the mapping_t::thread_t property.
static constexpr thread_t thread;
/// A special value used for accessing the mapping_t::new_thread_t property.
static constexpr new_thread_t new_thread;
/// A special value used for accessing the mapping_t::other_t property.
static constexpr other_t other;
/// Default constructor.
constexpr mapping_t();
/// Construct from a sub-property value.
constexpr mapping_t(thread_t);
/// Construct from a sub-property value.
constexpr mapping_t(new_thread_t);
/// Construct from a sub-property value.
constexpr mapping_t(other_t);
/// Compare property values for equality.
friend constexpr bool operator==(
const mapping_t& a, const mapping_t& b) noexcept;
/// Compare property values for inequality.
friend constexpr bool operator!=(
const mapping_t& a, const mapping_t& b) noexcept;
};
/// A special value used for accessing the mapping_t property.
constexpr mapping_t mapping;
} // namespace execution
#else // defined(GENERATING_DOCUMENTATION)
namespace execution {
namespace detail {
namespace mapping {
template <int I> struct thread_t;
template <int I> struct new_thread_t;
template <int I> struct other_t;
} // namespace mapping
template <int I = 0>
struct mapping_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 mapping_t polymorphic_query_result_type;
typedef detail::mapping::thread_t<I> thread_t;
typedef detail::mapping::new_thread_t<I> new_thread_t;
typedef detail::mapping::other_t<I> other_t;
ASIO_CONSTEXPR mapping_t()
: value_(-1)
{
}
ASIO_CONSTEXPR mapping_t(thread_t)
: value_(0)
{
}
ASIO_CONSTEXPR mapping_t(new_thread_t)
: value_(1)
{
}
ASIO_CONSTEXPR mapping_t(other_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, mapping_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename static_proxy<T>::type, mapping_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, thread_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, thread_t>::is_valid
>::type* = 0) ASIO_NOEXCEPT
{
return traits::static_query<T, thread_t>::value();
}
template <typename T>
static ASIO_CONSTEXPR
typename traits::static_query<T, new_thread_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, thread_t>::is_valid
>::type* = 0,
typename enable_if<
traits::static_query<T, new_thread_t>::is_valid
>::type* = 0) ASIO_NOEXCEPT
{
return traits::static_query<T, new_thread_t>::value();
}
template <typename T>
static ASIO_CONSTEXPR
typename traits::static_query<T, other_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, thread_t>::is_valid
>::type* = 0,
typename enable_if<
!traits::static_query<T, new_thread_t>::is_valid
>::type* = 0,
typename enable_if<
traits::static_query<T, other_t>::is_valid
>::type* = 0) ASIO_NOEXCEPT
{
return traits::static_query<T, other_t>::value();
}
template <typename E, typename T = decltype(mapping_t::static_query<E>())>
static ASIO_CONSTEXPR const T static_query_v
= mapping_t::static_query<E>();
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
friend ASIO_CONSTEXPR bool operator==(
const mapping_t& a, const mapping_t& b)
{
return a.value_ == b.value_;
}
friend ASIO_CONSTEXPR bool operator!=(
const mapping_t& a, const mapping_t& b)
{
return a.value_ != b.value_;
}
struct convertible_from_mapping_t
{
ASIO_CONSTEXPR convertible_from_mapping_t(mapping_t) {}
};
template <typename Executor>
friend ASIO_CONSTEXPR mapping_t query(
const Executor& ex, convertible_from_mapping_t,
typename enable_if<
can_query<const Executor&, thread_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&, mapping_t<>::thread_t>::value))
#else // defined(ASIO_MSVC)
ASIO_NOEXCEPT_IF((
is_nothrow_query<const Executor&, thread_t>::value))
#endif // defined(ASIO_MSVC)
#endif // !defined(__clang__)
{
return asio::query(ex, thread_t());
}
template <typename Executor>
friend ASIO_CONSTEXPR mapping_t query(
const Executor& ex, convertible_from_mapping_t,
typename enable_if<
!can_query<const Executor&, thread_t>::value
>::type* = 0,
typename enable_if<
can_query<const Executor&, new_thread_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&, mapping_t<>::new_thread_t>::value))
#else // defined(ASIO_MSVC)
ASIO_NOEXCEPT_IF((
is_nothrow_query<const Executor&, new_thread_t>::value))
#endif // defined(ASIO_MSVC)
#endif // !defined(__clang__)
{
return asio::query(ex, new_thread_t());
}
template <typename Executor>
friend ASIO_CONSTEXPR mapping_t query(
const Executor& ex, convertible_from_mapping_t,
typename enable_if<
!can_query<const Executor&, thread_t>::value
>::type* = 0,
typename enable_if<
!can_query<const Executor&, new_thread_t>::value
>::type* = 0,
typename enable_if<
can_query<const Executor&, other_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&, mapping_t<>::other_t>::value))
#else // defined(ASIO_MSVC)
ASIO_NOEXCEPT_IF((
is_nothrow_query<const Executor&, other_t>::value))
#endif // defined(ASIO_MSVC)
#endif // !defined(__clang__)
{
return asio::query(ex, other_t());
}
ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(thread_t, thread);
ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(new_thread_t, new_thread);
ASIO_STATIC_CONSTEXPR_DEFAULT_INIT(other_t, other);
#if !defined(ASIO_HAS_CONSTEXPR)
static const mapping_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 mapping_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 mapping_t<I> mapping_t<I>::instance;
#endif
template <int I>
const typename mapping_t<I>::thread_t mapping_t<I>::thread;
template <int I>
const typename mapping_t<I>::new_thread_t mapping_t<I>::new_thread;
template <int I>
const typename mapping_t<I>::other_t mapping_t<I>::other;
namespace mapping {
template <int I = 0>
struct thread_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 mapping_t<I> polymorphic_query_result_type;
ASIO_CONSTEXPR thread_t()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename mapping_t<I>::template proxy<T>::type, thread_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename mapping_t<I>::template static_proxy<T>::type, thread_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 thread_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, thread_t>::is_valid
>::type* = 0,
typename enable_if<
!can_query<T, new_thread_t<I> >::value
>::type* = 0,
typename enable_if<
!can_query<T, other_t<I> >::value
>::type* = 0) ASIO_NOEXCEPT
{
return thread_t();
}
template <typename E, typename T = decltype(thread_t::static_query<E>())>
static ASIO_CONSTEXPR const T static_query_v
= thread_t::static_query<E>();
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
static ASIO_CONSTEXPR mapping_t<I> value()
{
return thread_t();
}
friend ASIO_CONSTEXPR bool operator==(
const thread_t&, const thread_t&)
{
return true;
}
friend ASIO_CONSTEXPR bool operator!=(
const thread_t&, const thread_t&)
{
return false;
}
};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <int I> template <typename E, typename T>
const T thread_t<I>::static_query_v;
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <int I = 0>
struct new_thread_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 mapping_t<I> polymorphic_query_result_type;
ASIO_CONSTEXPR new_thread_t()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename mapping_t<I>::template proxy<T>::type, new_thread_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename mapping_t<I>::template static_proxy<T>::type, new_thread_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(new_thread_t::static_query<E>())>
static ASIO_CONSTEXPR const T static_query_v
= new_thread_t::static_query<E>();
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
static ASIO_CONSTEXPR mapping_t<I> value()
{
return new_thread_t();
}
friend ASIO_CONSTEXPR bool operator==(
const new_thread_t&, const new_thread_t&)
{
return true;
}
friend ASIO_CONSTEXPR bool operator!=(
const new_thread_t&, const new_thread_t&)
{
return false;
}
};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <int I> template <typename E, typename T>
const T new_thread_t<I>::static_query_v;
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <int I>
struct other_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 mapping_t<I> polymorphic_query_result_type;
ASIO_CONSTEXPR other_t()
{
}
template <typename T>
struct query_member :
traits::query_member<
typename mapping_t<I>::template proxy<T>::type, other_t> {};
template <typename T>
struct query_static_constexpr_member :
traits::query_static_constexpr_member<
typename mapping_t<I>::template static_proxy<T>::type, other_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(other_t::static_query<E>())>
static ASIO_CONSTEXPR const T static_query_v
= other_t::static_query<E>();
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
static ASIO_CONSTEXPR mapping_t<I> value()
{
return other_t();
}
friend ASIO_CONSTEXPR bool operator==(
const other_t&, const other_t&)
{
return true;
}
friend ASIO_CONSTEXPR bool operator!=(
const other_t&, const other_t&)
{
return false;
}
};
#if defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT) \
&& defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
template <int I> template <typename E, typename T>
const T other_t<I>::static_query_v;
#endif // defined(ASIO_HAS_DEDUCED_STATIC_QUERY_TRAIT)
// && defined(ASIO_HAS_SFINAE_VARIABLE_TEMPLATES)
} // namespace mapping
} // namespace detail
typedef detail::mapping_t<> mapping_t;
#if defined(ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION)
constexpr mapping_t mapping;
#else // defined(ASIO_HAS_CONSTEXPR) || defined(GENERATING_DOCUMENTATION)
namespace { static const mapping_t& mapping = mapping_t::instance; }
#endif
} // namespace execution
#if !defined(ASIO_HAS_VARIABLE_TEMPLATES)
template <typename T>
struct is_applicable_property<T, execution::mapping_t>
: integral_constant<bool,
execution::is_executor<T>::value
#if !defined(ASIO_NO_DEPRECATED)
|| 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_NO_DEPRECATED)
>
{
};
template <typename T>
struct is_applicable_property<T, execution::mapping_t::thread_t>
: integral_constant<bool,
execution::is_executor<T>::value
#if !defined(ASIO_NO_DEPRECATED)
|| 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_NO_DEPRECATED)
>
{
};
template <typename T>
struct is_applicable_property<T, execution::mapping_t::new_thread_t>
: integral_constant<bool,
execution::is_executor<T>::value
#if !defined(ASIO_NO_DEPRECATED)
|| 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_NO_DEPRECATED)
>
{
};
template <typename T>
struct is_applicable_property<T, execution::mapping_t::other_t>
: integral_constant<bool,
execution::is_executor<T>::value
#if !defined(ASIO_NO_DEPRECATED)
|| 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_NO_DEPRECATED)
>
{
};
#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::mapping_t,
typename enable_if<
can_query<T, execution::mapping_t::thread_t>::value
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
(is_nothrow_query<T, execution::mapping_t::thread_t>::value));
typedef execution::mapping_t result_type;
};
template <typename T>
struct query_free_default<T, execution::mapping_t,
typename enable_if<
!can_query<T, execution::mapping_t::thread_t>::value
&& can_query<T, execution::mapping_t::new_thread_t>::value
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
(is_nothrow_query<T, execution::mapping_t::new_thread_t>::value));
typedef execution::mapping_t result_type;
};
template <typename T>
struct query_free_default<T, execution::mapping_t,
typename enable_if<
!can_query<T, execution::mapping_t::thread_t>::value
&& !can_query<T, execution::mapping_t::new_thread_t>::value
&& can_query<T, execution::mapping_t::other_t>::value
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
(is_nothrow_query<T, execution::mapping_t::other_t>::value));
typedef execution::mapping_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::mapping_t,
typename enable_if<
execution::detail::mapping_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::mapping_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::mapping_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t,
typename enable_if<
!execution::detail::mapping_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::mapping_t<0>::
query_member<T>::is_valid
&& traits::static_query<T, execution::mapping_t::thread_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::mapping_t::thread_t>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return traits::static_query<T, execution::mapping_t::thread_t>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t,
typename enable_if<
!execution::detail::mapping_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::mapping_t<0>::
query_member<T>::is_valid
&& !traits::static_query<T, execution::mapping_t::thread_t>::is_valid
&& traits::static_query<T, execution::mapping_t::new_thread_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::mapping_t::new_thread_t>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return traits::static_query<T, execution::mapping_t::new_thread_t>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t,
typename enable_if<
!execution::detail::mapping_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::mapping_t<0>::
query_member<T>::is_valid
&& !traits::static_query<T, execution::mapping_t::thread_t>::is_valid
&& !traits::static_query<T, execution::mapping_t::new_thread_t>::is_valid
&& traits::static_query<T, execution::mapping_t::other_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::mapping_t::other_t>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return traits::static_query<T, execution::mapping_t::other_t>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t::thread_t,
typename enable_if<
execution::detail::mapping::thread_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::mapping::thread_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::mapping::thread_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t::thread_t,
typename enable_if<
!execution::detail::mapping::thread_t<0>::
query_static_constexpr_member<T>::is_valid
&& !execution::detail::mapping::thread_t<0>::
query_member<T>::is_valid
&& !traits::query_free<T, execution::mapping_t::thread_t>::is_valid
&& !can_query<T, execution::mapping_t::new_thread_t>::value
&& !can_query<T, execution::mapping_t::other_t>::value
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef execution::mapping_t::thread_t result_type;
static ASIO_CONSTEXPR result_type value()
{
return result_type();
}
};
template <typename T>
struct static_query<T, execution::mapping_t::new_thread_t,
typename enable_if<
execution::detail::mapping::new_thread_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::mapping::new_thread_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::mapping::new_thread_t<0>::
query_static_constexpr_member<T>::value();
}
};
template <typename T>
struct static_query<T, execution::mapping_t::other_t,
typename enable_if<
execution::detail::mapping::other_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::mapping::other_t<0>::
query_static_constexpr_member<T>::result_type result_type;
static ASIO_CONSTEXPR result_type value()
{
return execution::detail::mapping::other_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::mapping_t::thread_t,
typename enable_if<
static_query<T, execution::mapping_t::thread_t>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid =
(is_same<typename static_query<T,
execution::mapping_t::thread_t>::result_type,
execution::mapping_t::thread_t>::value));
};
template <typename T>
struct static_require<T, execution::mapping_t::new_thread_t,
typename enable_if<
static_query<T, execution::mapping_t::new_thread_t>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid =
(is_same<typename static_query<T,
execution::mapping_t::new_thread_t>::result_type,
execution::mapping_t::new_thread_t>::value));
};
template <typename T>
struct static_require<T, execution::mapping_t::other_t,
typename enable_if<
static_query<T, execution::mapping_t::other_t>::is_valid
>::type>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid =
(is_same<typename static_query<T,
execution::mapping_t::other_t>::result_type,
execution::mapping_t::other_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_MAPPING_HPP