libmesh_base.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; you can 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.
 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
#ifndef LIBMESH_LIBMESH_BASE_H
#define LIBMESH_LIBMESH_BASE_H
 
#include "libmesh/id_types.h"
 
namespace libMesh {
 
processor_id_type global_n_processors();
 
processor_id_type global_processor_id();
 
unsigned int n_threads();
 
unsigned int default_grainsize();
 
namespace libMeshPrivateData {
#ifdef LIBMESH_HAVE_MPI
extern processor_id_type _n_processors;
 
extern processor_id_type _processor_id;
#endif
 
extern int _n_threads;
 
extern unsigned int _default_grainsize;
}
}
 
 
 
// ------------------------------------------------------------
// libMesh inline member functions
inline
libMesh::processor_id_type libMesh::global_n_processors()
{
#ifdef LIBMESH_HAVE_MPI
  return libMeshPrivateData::_n_processors;
#else
  return 1;
#endif
}
 
inline
libMesh::processor_id_type libMesh::global_processor_id()
{
#ifdef LIBMESH_HAVE_MPI
  return libMeshPrivateData::_processor_id;
#else
  return 0;
#endif
}
 
 
inline
unsigned int libMesh::n_threads()
{
  return static_cast<unsigned int>(libMeshPrivateData::_n_threads);
}
 
 
 
inline
unsigned int libMesh::default_grainsize()
{
  return libMeshPrivateData::_default_grainsize;
}
 
 
 
// We now put everything we can into a separate libMesh namespace;
// code which forward declares libMesh classes or which specializes
// libMesh templates may want to know whether it is compiling under
// such conditions, to be backward compatible with older libMesh
// versions:
#define LIBMESH_USE_SEPARATE_NAMESPACE 1
 
 
// Unless configured otherwise, we import all of namespace libMesh,
// for backwards compatibility with pre-namespaced codes.
 
#ifndef LIBMESH_REQUIRE_SEPARATE_NAMESPACE
using namespace libMesh;
#endif
 
 
#endif // LIBMESH_LIBMESH_BASE_H