p4est_nodes.h

/*
  This file is part of p4est.
  p4est is a C library to manage a collection (a forest) of multiple
  connected adaptive quadtrees or octrees in parallel.
 
  Copyright (C) 2010 The University of Texas System
  Additional copyright (C) 2011 individual authors
  Written by Carsten Burstedde, Lucas C. Wilcox, and Tobin Isaac
 
  p4est is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
 
  p4est 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 General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with p4est; if not, write to the Free Software Foundation, Inc.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
 
#ifndef P4EST_NODES_H
#define P4EST_NODES_H
 
#include <p4est_ghost.h>
 
SC_EXTERN_C_BEGIN;
 
typedef struct p4est_indep
{
  p4est_qcoord_t      x, y;
  int8_t              level, pad8;
  int16_t             pad16;
  union p4est_indep_data
  {
    void               *unused;
    p4est_topidx_t      which_tree;
    struct
    {
      p4est_topidx_t      which_tree;
      int                 owner_rank;
    }
    piggy1;
    struct
    {
      p4est_topidx_t      which_tree;
      p4est_topidx_t      from_tree;
    }
    piggy_unused2;
    struct
    {
      p4est_topidx_t      which_tree;
      p4est_locidx_t      local_num;
    }
    piggy3;
  }
  p;
}
p4est_indep_t;
 
typedef struct p4est_hang2
{
  p4est_qcoord_t      x, y;
  int8_t              level, pad8;
  int16_t             pad16;
  union p4est_hang2_data
  {
    void               *unused;
    p4est_topidx_t      which_tree;
    struct
    {
      p4est_topidx_t      which_tree;
      int                 owner_rank;
    }
    piggy_unused1;
    struct
    {
      p4est_topidx_t      which_tree;
      p4est_topidx_t      from_tree;
    }
    piggy_unused2;
    struct
    {
      p4est_topidx_t      which_tree;
      p4est_locidx_t      local_num;
    }
    piggy_unused3;
    struct
    {
      p4est_topidx_t      which_tree;
      p4est_locidx_t      depends[2];
    }
    piggy;
  }
  p;
}
p4est_hang2_t;
 
typedef struct p4est_nodes
{
  p4est_locidx_t      num_local_quadrants;
  p4est_locidx_t      num_owned_indeps, num_owned_shared;
  p4est_locidx_t      offset_owned_indeps;
  sc_array_t          indep_nodes;
  sc_array_t          face_hangings;
  p4est_locidx_t     *local_nodes;
  sc_array_t          shared_indeps;
  p4est_locidx_t     *shared_offsets;
  int                *nonlocal_ranks;
  p4est_locidx_t     *global_owned_indeps;
}
p4est_nodes_t;
 
p4est_nodes_t      *p4est_nodes_new (p4est_t * p4est, p4est_ghost_t * ghost);
 
void                p4est_nodes_destroy (p4est_nodes_t * nodes);
 
int                 p4est_nodes_is_valid (p4est_t * p4est,
                                          p4est_nodes_t * nodes);
 
SC_EXTERN_C_END;
 
#endif /* !P4EST_NODES_H */