.. _program_listing_file_src_pcms_field_data_simple.h:

Program Listing for File simple.h
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_pcms_field_data_simple.h>` (``src/pcms/field/data/simple.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #ifndef PCMS_SIMPLE_FIELD_DATA_H
   #define PCMS_SIMPLE_FIELD_DATA_H
   
   #include "../field_data.h"
   #include "../field_layout.h"
   #include "pcms/utility/arrays.h"
   #include "pcms/utility/assert.h"
   #include "pcms/utility/memory_spaces.h"
   #include <Kokkos_Core.hpp>
   #include <memory>
   #include <string>
   
   namespace pcms
   {
   
   // SimpleFieldData<T> is a generic concrete FieldData<T> backed by shaped
   // [dof_holder][component] Kokkos Views.
   //
   // Ownership of the layout is shared — the layout is typically held by the
   // factory that created this field data object.
   template <typename T>
   class SimpleFieldData
     : public FieldData<T>
     , public DOFAccess<T>
   {
   public:
     SimpleFieldData(std::shared_ptr<const FieldLayout> layout, ValueBasis basis)
       : layout_(std::move(layout)),
         basis_(std::move(basis)),
         device_data_("simple_field_data_device",
                      static_cast<size_t>(layout_->GetNumOwnedDofHolder()),
                      static_cast<size_t>(layout_->GetNumComponents()))
     {
     }
   
     FieldValueType GetValueType() const override
     {
       return ValueTypeOfRank(basis_.Rank());
     }
     const ValueBasis& GetValueBasis() const override { return basis_; }
   
     const DOFAccess<T>* GetDOFAccess() const noexcept override { return this; }
     DOFAccess<T>* GetDOFAccess() noexcept override { return this; }
   
     Rank2View<const T, DeviceMemorySpace> GetOwnedValues() const override
     {
       return MakeConstRank2View(device_data_);
     }
   
     void SetOwnedValues(Rank2View<const T, DeviceMemorySpace> values) override
     {
       CopyDeviceRank2ViewToDeviceView(device_data_, values);
     }
   
   private:
     std::shared_ptr<const FieldLayout> layout_;
     ValueBasis basis_;
     Kokkos::View<T**, DeviceMemorySpace> device_data_;
   };
   
   } // namespace pcms
   
   #endif // PCMS_SIMPLE_FIELD_DATA_H