GhostExchange.hpp

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// Copyright 2024 Sebastian Eibl
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#pragma once
 
#include "data/Atoms.hpp"
#include "data/Subdomain.hpp"
#include "datatypes.hpp"
#include "util/Kokkos_grow.hpp"
 
namespace mrmd
{
namespace communication
{
namespace impl
{
class GhostExchange
{
private:
    Kokkos::View<idx_t* [2]> atomsToCommunicateAll_;
 
    Kokkos::View<idx_t[2]> numberOfAtomsToCommunicate_;
 
    IndexView correspondingRealAtom_;
 
public:
    IndexView createGhostAtoms(data::Atoms& atoms,
                               const data::Subdomain& subdomain,
                               const AXIS& axis);
 
    IndexView createGhostAtomsXYZ(data::Atoms& atoms, const data::Subdomain& subdomain);
 
    void resetCorrespondingRealAtoms(data::Atoms& atoms);
 
    GhostExchange(const idx_t& initialSize = 100);
};
 
}  // namespace impl
}  // namespace communication
}  // namespace mrmd