Line data    Source code

       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <cstddef>
       7             : #include <optional>
       8             : #include <tuple>
       9             : #include <type_traits>
      10             : #include <utility>
      11             : 
      12             : #include "DataStructures/DataBox/DataBox.hpp"
      13             : #include "DataStructures/TaggedTuple.hpp"
      14             : #include "DataStructures/VariablesTag.hpp"
      15             : #include "Evolution/DiscontinuousGalerkin/Actions/ComputeTimeDerivativeHelpers.hpp"
      16             : #include "Evolution/Initialization/InitialData.hpp"
      17             : #include "Parallel/AlgorithmExecution.hpp"
      18             : #include "Parallel/GlobalCache.hpp"
      19             : #include "ParallelAlgorithms/Initialization/MutateAssign.hpp"
      20             : #include "Utilities/TMPL.hpp"
      21             : 
      22             : /// \cond
      23             : namespace domain {
      24             : namespace Tags {
      25             : template <size_t VolumeDim>
      26             : struct Mesh;
      27             : }  // namespace Tags
      28             : }  // namespace domain
      29             : 
      30             : /// \endcond
      31             : 
      32             : namespace Initialization {
      33             : namespace Actions {
      34             : /// \ingroup InitializationGroup
      35             : /// \brief Allocate variables needed for evolution of nonconservative systems
      36             : ///
      37             : /// Uses:
      38             : /// - DataBox:
      39             : ///   * `Tags::Mesh<Dim>`
      40             : ///
      41             : /// DataBox changes:
      42             : /// - Adds:
      43             : ///   * System::variables_tag
      44             : ///   * `::Tags::Variables<System::auxiliary_variables>` (only if the system
      45             : ///     declares a non-empty `auxiliary_variables`)
      46             : ///
      47             : /// - Removes: nothing
      48             : /// - Modifies: nothing
      49             : template <typename System>
      50           1 : struct NonconservativeSystem {
      51             :   static_assert(not System::is_in_flux_conservative_form,
      52             :                 "System is in flux conservative form");
      53           0 :   static constexpr size_t dim = System::volume_dim;
      54           0 :   using variables_tag = typename System::variables_tag;
      55           0 :   using auxiliary_variables =
      56             :       evolution::dg::Actions::detail::get_auxiliary_variables_or_default_t<
      57             :           System, tmpl::list<>>;
      58           0 :   static constexpr bool has_auxiliary_variables =
      59             :       not std::is_same_v<auxiliary_variables, tmpl::list<>>;
      60           0 :   using auxiliary_variables_tag = ::Tags::Variables<auxiliary_variables>;
      61           0 :   using simple_tags = tmpl::conditional_t<
      62             :       has_auxiliary_variables,
      63             :       db::AddSimpleTags<variables_tag, auxiliary_variables_tag>,
      64             :       db::AddSimpleTags<variables_tag>>;
      65           0 :   using compute_tags = db::AddComputeTags<>;
      66             : 
      67             :   template <typename DbTagsList, typename... InboxTags, typename Metavariables,
      68             :             typename ArrayIndex, typename ActionList,
      69             :             typename ParallelComponent>
      70           0 :   static Parallel::iterable_action_return_t apply(
      71             :       db::DataBox<DbTagsList>& box,
      72             :       const tuples::TaggedTuple<InboxTags...>& /*inboxes*/,
      73             :       const Parallel::GlobalCache<Metavariables>& /*cache*/,
      74             :       const ArrayIndex& /*array_index*/, ActionList /*meta*/,
      75             :       const ParallelComponent* const /*meta*/) {
      76             :     using Vars = typename variables_tag::type;
      77             :     const size_t number_of_grid_points =
      78             :         db::get<domain::Tags::Mesh<dim>>(box).number_of_grid_points();
      79             :     if constexpr (has_auxiliary_variables) {
      80             :       using AuxVars = typename auxiliary_variables_tag::type;
      81             :       Initialization::mutate_assign<simple_tags>(
      82             :           make_not_null(&box), Vars{number_of_grid_points},
      83             :           AuxVars{number_of_grid_points});
      84             :     } else {
      85             :       Initialization::mutate_assign<simple_tags>(make_not_null(&box),
      86             :                                                  Vars{number_of_grid_points});
      87             :     }
      88             : 
      89             :     return {Parallel::AlgorithmExecution::Continue, std::nullopt};
      90             :   }
      91             : };
      92             : }  // namespace Actions
      93             : }  // namespace Initialization