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/* Copyright 2019-2020 Andrew Myers, Axel Huebl,
* Maxence Thevenet
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#ifndef SMART_UTILS_H_
#define SMART_UTILS_H_
#include "DefaultInitialization.H"
using NameMap = std::map<std::string, int>;
using PolicyVec = amrex::Gpu::DeviceVector<InitializationPolicy>;
struct SmartCopyTag
{
std::vector<std::string> common_names;
amrex::Gpu::DeviceVector<int> src_comps;
amrex::Gpu::DeviceVector<int> dst_comps;
int size () const noexcept { return common_names.size(); }
};
PolicyVec getPolicies (const NameMap& names) noexcept;
SmartCopyTag getSmartCopyTag (const NameMap& src, const NameMap& dst) noexcept;
/**
* \brief Sets the ids of newly created particles to the next values.
*
* \tparam PTile the particle tile type
*
* \param ptile the particle tile
* \param old_size the index of the first new particle
* \param num_added the number of particles to set the ids for.
*/
template <typename PTile>
void setNewParticleIDs (PTile& ptile, int old_size, int num_added)
{
amrex::Long pid;
#ifdef AMREX_USE_OMP
#pragma omp critical (ionization_nextid)
#endif
{
pid = PTile::ParticleType::NextID();
PTile::ParticleType::NextID(pid + num_added);
}
const int cpuid = amrex::ParallelDescriptor::MyProc();
auto pp = ptile.GetArrayOfStructs()().data() + old_size;
amrex::ParallelFor(num_added, [=] AMREX_GPU_DEVICE (int ip) noexcept
{
auto& p = pp[ip];
p.id() = pid+ip;
p.cpu() = cpuid;
});
}
#endif //SMART_UTILS_H_
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