46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License Version 2.0 with LLVM Exceptions
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* https://llvm.org/LICENSE.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <unifex/execution_policy.hpp>
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#include <unifex/tag_invoke.hpp>
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#include <unifex/detail/prologue.hpp>
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namespace unifex
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{
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namespace _get_execution_policy {
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struct _fn {
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template(typename PolicyProvider)
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(requires tag_invocable<_fn, const PolicyProvider&>)
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constexpr auto operator()(const PolicyProvider& provider) const noexcept
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-> tag_invoke_result_t<_fn, const PolicyProvider&> {
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return tag_invoke(_fn{}, provider);
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}
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template(typename PolicyProvider)
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(requires (!tag_invocable<_fn, const PolicyProvider&>))
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constexpr sequenced_policy operator()([[maybe_unused]] const PolicyProvider&) const noexcept {
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return {};
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}
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};
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}
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inline constexpr _get_execution_policy::_fn get_execution_policy{};
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}
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#include <unifex/detail/epilogue.hpp>
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