add missing file

diff --git a/include/deal.II/base/mpi_tags.h b/include/deal.II/base/mpi_tags.h
new file mode 100644 (file)
index 0000000..728d75e
--- /dev/null
+++ b/include/deal.II/base/mpi_tags.h
@@ -0,0 +1,99 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2019 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE.md at
+// the top level directory of deal.II.
+//
+// ---------------------------------------------------------------------
+
+#ifndef dealii_mpi_tags_h
+#define dealii_mpi_tags_h
+
+#include <deal.II/base/config.h>
+
+DEAL_II_NAMESPACE_OPEN
+
+
+namespace Utilities
+{
+  namespace MPI
+  {
+    namespace internal
+    {
+      /**
+       * This enum holds all MPI tags used in collective MPI communications with
+       * using MPI_ANY_SOURCE inside the deal.II library.
+       *
+       * We keep these tags in a central location so that they are unique within
+       * the library. Otherwise, communication that receives packages with
+       * MPI_ANY_SOURCE might pick up packets from a different algorithm.
+       */
+      struct Tags
+      {
+        /**
+         * The enum with the tags.
+         */
+        enum enumeration
+        {
+          /// Utilities::MPI::some_to_some()
+          mpi_some_to_some = 300,
+
+          /// Utilities::MPI::compute_point_to_point_communication_pattern()
+          compute_point_to_point_communication_pattern,
+
+          /// GridTools::exchange_cell_data_to_ghosts():
+          exchange_cell_data_to_ghosts,
+
+          /// Triangulation<dim, spacedim>::communicate_locally_moved_vertices()
+          triangulation_communicate_locally_moved_vertices,
+
+          /// dof_handler_policy.cc: communicate_mg_ghost_cells()
+          dofhandler_communicate_mg_ghost_cells,
+
+          /// dof_handler_policy.cc: communicate_mg_ghost_cells()
+          dofhandler_communicate_mg_ghost_cells_reply,
+
+          /// mg_transfer_internal.cc: fill_copy_indices()
+          mg_transfer_fill_copy_indices,
+
+          /// SparsityTools::sparsity_tools_distribute_sparsity_pattern()
+          sparsity_tools_distribute_sparsity_pattern,
+
+          /// Dictionary::reinit()
+          dictionary_reinit,
+
+          /// ConsensusAlgorithmPayload::get_requesters()
+          consensus_algorithm_payload_get_requesters,
+
+          /// FETools::extrapolate()
+          fe_tools_extrapolate,
+          /// FETools::extrapolate(), allocate space for 10 rounds:
+          fe_tools_extrapolate_end = fe_tools_extrapolate + 10,
+
+          /// ConsensusAlgorithm_NBX::process
+          consensus_algorithm_nbx_process_request,
+          /// ConsensusAlgorithm_NBX::process
+          consensus_algorithm_nbx_process_deliver,
+
+          /// ConsensusAlgorithm_PEX::process
+          consensus_algorithm_pex_process_request,
+          /// ConsensusAlgorithm_PEX::process
+          consensus_algorithm_pex_process_deliver,
+
+        };
+      };
+    } // namespace internal
+  }   // namespace MPI
+} // namespace Utilities
+
+
+DEAL_II_NAMESPACE_CLOSE
+
+#endif