71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
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#ifndef ALSK_ALSK_SKELETON_BONE_SERIAL_H
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#define ALSK_ALSK_SKELETON_BONE_SERIAL_H
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#include "../bonebase.h"
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namespace alsk {
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template<typename, typename...> struct Serial;
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template<typename Signature, typename... FunTypes, typename... LinksTypes>
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struct Serial<Signature, tmp::Pack<FunTypes, LinksTypes>...>: SkeletonBase {
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using Links = tmp::Pack<LinksTypes...>;
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using PackP = tmp::Parameters<Signature>;
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using PackR = Returns<Links>;
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using PackX = tmp::Pack<>;
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using Packs = arg::Placeholders<PackP, PackR, PackX>;
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using TasksP = tmp::Pack<FunTypes...>;
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using Tasks = std::tuple<FunTypes...>;
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Tasks tasks;
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template<std::size_t I>
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constexpr auto const& task() const noexcept { return std::get<I>(tasks); }
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template<std::size_t I>
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constexpr auto& task() noexcept { return std::get<I>(tasks); }
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};
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template<>
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struct SkeletonTraits<Serial> {
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static constexpr bool serial = true;
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template<typename Skeleton, typename F, typename T>
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static constexpr decltype(auto) traverse(std::size_t parDepth, Skeleton&& skeleton, F&& function, T&& init) {
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auto indices = std::make_index_sequence<std::tuple_size<decltype(skeleton.tasks)>{}>();
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return _traverse(parDepth, std::forward<Skeleton>(skeleton), std::forward<F>(function), std::forward<T>(init), std::move(indices));
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}
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template<typename Skeleton, typename F, typename T, std::size_t... Is>
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static constexpr decltype(auto) _traverse(std::size_t parDepth, Skeleton&& skeleton, F&& function, T&& init, std::index_sequence<Is...>) {
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using Traversers = tmp::Pack<
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SkeletonTraversal<std::tuple_element_t<Is, typename std::decay_t<Skeleton>::Tasks>>...
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>;
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return function(parDepth, skeleton, tmp::PackGet<Traversers, Is>::execute(parDepth, skeleton.template task<Is>(), function, init)...);
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}
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template<typename Skeleton>
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static constexpr std::size_t parallelizability(Skeleton&&) noexcept {
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return 1;
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}
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};
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namespace impl {
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template<typename Tuple, typename F, std::size_t... indices>
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void skeletonTraversalSerial(Tuple const& tasks, F f, std::index_sequence<indices...>) {
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using Expander = int[];
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static_cast<void>(Expander{(f(std::get<indices>(tasks), 1), 0)...});
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}
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}
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template<typename Signature, typename... Tasks, typename F>
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void skeletonTraversal(Serial<Signature, Tasks...> const& s, F&& f) {
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impl::skeletonTraversalSerial(s.tasks, std::forward<F>(f), std::make_index_sequence<sizeof...(Tasks)>());
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}
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}
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#endif
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