Execution.hpp

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// Copyright (c) 2019 Maikel Nadolski
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// SOFTWARE.
 
#ifndef FUB_EXECUTION_HPP
#define FUB_EXECUTION_HPP
 
#include "fub/ext/omp.hpp"
#include <optional>
 
namespace fub {
namespace execution {
 
struct SequentialTag {};
inline constexpr SequentialTag seq{};
 
struct SimdTag {};
inline constexpr SimdTag simd{};
 
struct OpenMpTag {};
inline constexpr OpenMpTag openmp{};
 
struct OpenMpSimdTag : OpenMpTag, SimdTag {};
inline constexpr OpenMpSimdTag openmp_simd{};
 
} // namespace execution
 
namespace detail {
template <typename Tag, typename T> struct LocalType {
  using type = std::optional<T>;
};
template <typename T> struct LocalType<execution::OpenMpTag, T> {
  using type = OmpLocal<T>;
};
template <typename T> struct LocalType<execution::OpenMpSimdTag, T> {
  using type = OmpLocal<T>;
};
} // namespace detail
template <typename Tag, typename T>
using Local = typename detail::LocalType<Tag, T>::type;
 
template <typename T> const T& Min(const std::optional<T>& x) { return *x; }
 
template <typename T> const T& Min(const OmpLocal<T>& x) { return x.Min(); }
 
} // namespace fub
 
#endif