GhostZones.hpp

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// -------------------------------------------------------//
//
// SHAMROCK code for hydrodynamics
// Copyright (c) 2021-2026 Timothée David--Cléris <tim.shamrock@proton.me>
// SPDX-License-Identifier: CeCILL Free Software License Agreement v2.1
// Shamrock is licensed under the CeCILL 2.1 License, see LICENSE for more information
//
// -------------------------------------------------------//
 
#pragma once
 
#include "shambackends/vec.hpp"
#include "shammodels/zeus/Solver.hpp"
#include "shammodels/zeus/modules/SolverStorage.hpp"
 
namespace shammodels::zeus::modules {
 
    template<class Tvec, class TgridVec>
    class GhostZones {
        public:
        using Tscal              = shambase::VecComponent<Tvec>;
        using Tgridscal          = shambase::VecComponent<TgridVec>;
        static constexpr u32 dim = shambase::VectorProperties<Tvec>::dimension;
 
        using Config  = SolverConfig<Tvec, TgridVec>;
        using Storage = SolverStorage<Tvec, TgridVec, u64>;
 
        ShamrockCtx &context;
        Config &solver_config;
        Storage &storage;
 
        GhostZones(ShamrockCtx &context, Config &solver_config, Storage &storage)
            : context(context), solver_config(solver_config), storage(storage) {}
 
        void build_ghost_cache();
 
        shambase::DistributedDataShared<shamrock::patch::PatchDataLayer> communicate_pdat(
            const std::shared_ptr<shamrock::patch::PatchDataLayerLayout> &pdl_ptr,
            shambase::DistributedDataShared<shamrock::patch::PatchDataLayer> &&interf);
 
        template<class T>
        shambase::DistributedDataShared<PatchDataField<T>> communicate_pdat_field(
            shambase::DistributedDataShared<PatchDataField<T>> &&interf);
 
        template<class T, class Tmerged>
        shambase::DistributedData<Tmerged> merge_native(
            shambase::DistributedDataShared<T> &&interfs,
            std::function<
                Tmerged(const shamrock::patch::Patch, shamrock::patch::PatchDataLayer &pdat)> init,
            std::function<void(Tmerged &, T &)> appender);
 
        void exchange_ghost();
 
        template<class T>
        shamrock::ComputeField<T> exchange_compute_field(shamrock::ComputeField<T> &in);
 
        private:
        inline PatchScheduler &scheduler() { return shambase::get_check_ref(context.sched); }
    };
} // namespace shammodels::zeus::modules