GCC Code Coverage Report

Directory:	gridformat/
File:	gridformat/vtk/pvtu_writer.hpp
Date:	2026-10-12 17:50:57

	Exec	Total	Coverage
Lines:	51	53	96.2%
Functions:	115	217	53.0%
Branches:	128	428	29.9%

  
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      // SPDX-FileCopyrightText: 2022-2023 Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de>
    
      // SPDX-License-Identifier: MIT
    
      /*!
    
       * \file
    
       * \ingroup VTK
    
       * \copydoc GridFormat::PVTUWriter
    
       */
    
      #ifndef GRIDFORMAT_VTK_PVTU_WRITER_HPP_
    
      #define GRIDFORMAT_VTK_PVTU_WRITER_HPP_
    
      #include <ostream>
    
      #include <string>
    
      #include <filesystem>
    
      #include <gridformat/common/exceptions.hpp>
    
      #include <gridformat/common/lvalue_reference.hpp>
    
      #include <gridformat/common/output_file.hpp>
    
      #include <gridformat/parallel/communication.hpp>
    
      #include <gridformat/parallel/helpers.hpp>
    
      #include <gridformat/grid/grid.hpp>
    
      #include <gridformat/xml/element.hpp>
    
      #include <gridformat/vtk/vtu_writer.hpp>
    
      #include <gridformat/vtk/parallel.hpp>
    
      namespace GridFormat {
    
      /*!
    
       * \ingroup VTK
    
       * \brief Writer for parallel .pvtu files
    
       */
    
      template<Concepts::UnstructuredGrid Grid,
    
               Concepts::Communicator Communicator>
    
      class PVTUWriter : public VTK::XMLWriterBase<Grid, PVTUWriter<Grid, Communicator>> {
    
          using ParentType = VTK::XMLWriterBase<Grid, PVTUWriter<Grid, Communicator>>;
    
       public:
    
      300
          explicit PVTUWriter(LValueReferenceOf<const Grid> grid,
    
                              Communicator comm,
    
                              VTK::XMLOptions xml_opts = {})
    
      300
          : ParentType(grid.get(), ".pvtu", false, xml_opts)
    
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      900
          , _comm(comm)
    
      300
          {}
    
      180
          const Communicator& communicator() const {
    
      180
              return _comm;
    
          }
    
       private:
    
          Communicator _comm;
    
      70
          PVTUWriter _with(VTK::XMLOptions xml_opts) const override {
    
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      70
              return PVTUWriter{this->grid(), _comm, std::move(xml_opts)};
    
          }
    
      ✗
          void _write(std::ostream&) const override {
    
      ✗
              throw InvalidState(
    
                  "PVTUWriter does not support direct export into stream. "
    
                  "Use overload with filename instead!"
    
              );
    
          }
    
      423
          virtual void _write(const std::string& filename_with_ext) const override {
    
              // the collective invocations also ensure that all pieces are written before the main file,
    
              // and that the main file is written before returning
    
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      741
              Parallel::invoke_collectively(_comm, [&] () {
    
      264
                  _write_piece(filename_with_ext);
    
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      858
              }, "Writing the pieces of '" + filename_with_ext + "'");
    
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      735
              Parallel::invoke_collectively(_comm, [&] () {
    
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      258
                  if (Parallel::rank(_comm) == 0)
    
      130
                      _write_pvtu_file(filename_with_ext);
    
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      840
              }, "Writing '" + filename_with_ext + "'");
    
      414
          }
    
      423
          void _write_piece(const std::string& par_filename) const {
    
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      423
              VTUWriter writer{this->grid(), this->_xml_opts};
    
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      423
              this->copy_fields(writer);
    
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      428
              writer.write(PVTK::piece_basefilename(par_filename, Parallel::rank(_comm)));
    
      423
          }
    
      211
          void _write_pvtu_file(const std::string& filename_with_ext) const {
    
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      422
              XMLElement pvtk_xml("VTKFile");
    
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      422
              pvtk_xml.set_attribute("type", "PUnstructuredGrid");
    
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      422
              XMLElement& grid = pvtk_xml.add_child("PUnstructuredGrid");
    
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      422
              XMLElement& ppoint_data = grid.add_child("PPointData");
    
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      211
              XMLElement& pcell_data = grid.add_child("PCellData");
    
      780
              std::visit([&] (const auto& encoder) {
    
      488
                  std::visit([&] (const auto& data_format) {
    
      130
                      PVTK::PDataArrayHelper pdata_helper{encoder, data_format, ppoint_data};
    
      130
                      PVTK::PDataArrayHelper cdata_helper{encoder, data_format, pcell_data};
    
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      1596
                      std::ranges::for_each(this->_point_field_names(), [&] (const std::string& name) {
    
      492
                          pdata_helper.add(name, this->_get_point_field(name));
    
                      });
    
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      1590
                      std::ranges::for_each(this->_cell_field_names(), [&] (const std::string& name) {
    
      489
                          cdata_helper.add(name, this->_get_cell_field(name));
    
                      });
    
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      130
                  }, this->_xml_settings.data_format);
    
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      211
              }, this->_xml_settings.encoder);
    
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      633
              XMLElement& point_array = grid.add_child("PPoints").add_child("PDataArray");
    
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      422
              point_array.set_attribute("NumberOfComponents", "3");
    
      358
              std::visit([&] <typename T> (const Precision<T>& prec) {
    
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      390
                  point_array.set_attribute("type", VTK::attribute_name(prec));
    
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      211
              }, this->_xml_settings.coordinate_precision);
    
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      529
              std::ranges::for_each(Parallel::ranks(_comm), [&] (int rank) {
    
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                  grid.add_child("Piece").set_attribute("Source", std::filesystem::path{
    
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      516
                      PVTK::piece_basefilename(filename_with_ext, rank) + ".vtu"
    
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      774
                  }.filename());
    
              });
    
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      211
              this->_set_default_active_fields(pvtk_xml.get_child("PUnstructuredGrid"));
    
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      373
              write_to(filename_with_ext, [&] (std::ostream& s) {
    
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      128
                  write_xml_with_version_header(pvtk_xml, s, Indentation{{.width = 2}});
    
              });
    
      211
          }
    
      };
    
      template<typename G, Concepts::Communicator C>
    
      PVTUWriter(G&&, const C&, VTK::XMLOptions = {}) -> PVTUWriter<std::remove_cvref_t<G>, C>;
    
      }  // namespace GridFormat
    
      #endif  // GRIDFORMAT_VTK_PVTU_WRITER_HPP_

Line	Branch	Exec	Source
1			// SPDX-FileCopyrightText: 2022-2023 Dennis Gläser <dennis.glaeser@iws.uni-stuttgart.de>
2			// SPDX-License-Identifier: MIT
3			/*!
4			* \file
5			* \ingroup VTK
6			* \copydoc GridFormat::PVTUWriter
7			*/
8			#ifndef GRIDFORMAT_VTK_PVTU_WRITER_HPP_
9			#define GRIDFORMAT_VTK_PVTU_WRITER_HPP_
10
11			#include <ostream>
12			#include <string>
13			#include <filesystem>
14
15			#include <gridformat/common/exceptions.hpp>
16			#include <gridformat/common/lvalue_reference.hpp>
17			#include <gridformat/common/output_file.hpp>
18			#include <gridformat/parallel/communication.hpp>
19			#include <gridformat/parallel/helpers.hpp>
20
21			#include <gridformat/grid/grid.hpp>
22			#include <gridformat/xml/element.hpp>
23			#include <gridformat/vtk/vtu_writer.hpp>
24			#include <gridformat/vtk/parallel.hpp>
25
26			namespace GridFormat {
27
28			/*!
29			* \ingroup VTK
30			* \brief Writer for parallel .pvtu files
31			*/
32			template<Concepts::UnstructuredGrid Grid,
33			Concepts::Communicator Communicator>
34			class PVTUWriter : public VTK::XMLWriterBase<Grid, PVTUWriter<Grid, Communicator>> {
35			using ParentType = VTK::XMLWriterBase<Grid, PVTUWriter<Grid, Communicator>>;
36
37			public:
38		300	explicit PVTUWriter(LValueReferenceOf<const Grid> grid,
39			Communicator comm,
40			VTK::XMLOptions xml_opts = {})
41		300	: ParentType(grid.get(), ".pvtu", false, xml_opts)
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43		300	{}
44
45		180	const Communicator& communicator() const {
46		180	return _comm;
47			}
48
49			private:
50			Communicator _comm;
51
52		70	PVTUWriter _with(VTK::XMLOptions xml_opts) const override {
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54			}
55
56		✗	void _write(std::ostream&) const override {
57		✗	throw InvalidState(
58			"PVTUWriter does not support direct export into stream. "
59			"Use overload with filename instead!"
60			);
61			}
62
63		423	virtual void _write(const std::string& filename_with_ext) const override {
64			// the collective invocations also ensure that all pieces are written before the main file,
65			// and that the main file is written before returning
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67		264	_write_piece(filename_with_ext);
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70	8/8 ✓ Branch 1 taken 96 times. ✓ Branch 2 taken 89 times. ✓ Branch 4 taken 32 times. ✓ Branch 5 taken 37 times. ✓ Branch 7 taken 1 times. ✓ Branch 8 taken 1 times. ✓ Branch 10 taken 1 times. ✓ Branch 11 taken 1 times.	258	if (Parallel::rank(_comm) == 0)
71		130	_write_pvtu_file(filename_with_ext);
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73		414	}
74
75		423	void _write_piece(const std::string& par_filename) const {
76	1/2 ✓ Branch 3 taken 264 times. ✗ Branch 4 not taken.	423	VTUWriter writer{this->grid(), this->_xml_opts};
77	1/2 ✓ Branch 1 taken 264 times. ✗ Branch 2 not taken.	423	this->copy_fields(writer);
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79		423	}
80
81		211	void _write_pvtu_file(const std::string& filename_with_ext) const {
82	1/2 ✓ Branch 1 taken 130 times. ✗ Branch 2 not taken.	422	XMLElement pvtk_xml("VTKFile");
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84
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88		780	std::visit([&] (const auto& encoder) {
89		488	std::visit([&] (const auto& data_format) {
90		130	PVTK::PDataArrayHelper pdata_helper{encoder, data_format, ppoint_data};
91		130	PVTK::PDataArrayHelper cdata_helper{encoder, data_format, pcell_data};
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93		492	pdata_helper.add(name, this->_get_point_field(name));
94			});
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96		489	cdata_helper.add(name, this->_get_cell_field(name));
97			});
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100
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103		358	std::visit([&] <typename T> (const Precision<T>& prec) {
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106
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111			});
112
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114	2/2 ✓ Branch 1 taken 128 times. ✓ Branch 2 taken 2 times.	373	write_to(filename_with_ext, [&] (std::ostream& s) {
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116			});
117		211	}
118			};
119
120			template<typename G, Concepts::Communicator C>
121			PVTUWriter(G&&, const C&, VTK::XMLOptions = {}) -> PVTUWriter<std::remove_cvref_t<G>, C>;
122
123			} // namespace GridFormat
124
125			#endif // GRIDFORMAT_VTK_PVTU_WRITER_HPP_
126