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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*! \file thrust/system/hip/hipstdpar/impl/hipstd.hpp
* \brief hipstd utilities implementation detail header for HIPSTDPAR.
*/
#ifndef THRUST_SYSTEM_HIP_HIPSTDPAR_HIPSTD_HPP
#define THRUST_SYSTEM_HIP_HIPSTDPAR_HIPSTD_HPP
#pragma once
#if defined(__HIPSTDPAR__)
#include <cstddef>
#include <iterator>
#include <type_traits>
#include <utility>
namespace hipstd
{
template <typename... Cs>
inline constexpr bool is_offloadable_callable() noexcept
{
return std::conjunction_v<std::negation<std::is_pointer<Cs>>...,
std::negation<std::is_member_function_pointer<Cs>>...>;
}
template <typename I, typename = void>
struct Is_offloadable_iterator : std::false_type
{
};
template <typename I>
struct Is_offloadable_iterator<
I,
std::void_t<decltype(std::declval<I>() < std::declval<I>()),
decltype(std::declval<I&>() += std::declval<std::ptrdiff_t>()),
decltype(std::declval<I>() + std::declval<std::ptrdiff_t>()),
decltype(std::declval<I>()[std::declval<std::ptrdiff_t>()]),
decltype(*std::declval<I>())>> : std::true_type
{
};
template <typename... Is>
inline constexpr bool is_offloadable_iterator() noexcept
{
#if defined(__cpp_lib_concepts)
return (... && std::random_access_iterator<Is>);
#else
return std::conjunction_v<Is_offloadable_iterator<Is>...>;
#endif
}
template <typename... Cs>
inline constexpr
__attribute__((diagnose_if(true,
"HIP Standard Parallelism does not support passing pointers to "
"function as callable arguments, execution will not be "
"offloaded.",
"warning"))) void
unsupported_callable_type() noexcept
{
}
template <typename... Is>
inline constexpr
__attribute__((diagnose_if(true,
"HIP Standard Parallelism requires random access iterators, "
"execution will not be offloaded.",
"warning"))) void
unsupported_iterator_category() noexcept
{
}
}
#else // __HIPSTDPAR__
# error "__HIPSTDPAR__ should be defined. Please use the '--hipstdpar' compile option."
#endif // __HIPSTDPAR__
#endif // THRUST_SYSTEM_HIP_HIPSTDPAR_HIPSTD_HPP
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