graph_v2.h

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/* LIBDGL -- a Directed Graph Library implementation
 * Copyright (C) 2002 Roberto Micarelli
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/*
 * best view tabstop=4
 */

#ifndef _DGL_GRAPH_V2_H_
#define _DGL_GRAPH_V2_H_

#ifdef DGL_STATS
#include <time.h>
#endif

/*
 * Node macros - addresses in a flat node
 */
#define DGL_IN_NODEID_v2                                        0
#define DGL_IN_STATUS_v2                                        1
#define DGL_IN_EDGESET_OFFSET_v2                        2
#define DGL_IN_ATTR_v2                                  3
#define DGL_IN_SIZE_v2                                  DGL_IN_ATTR_v2

#define DGL_NODE_SIZEOF_v2( nattr  )            (sizeof( dglInt32_t ) * DGL_IN_SIZE_v2 + (nattr) )
#define DGL_NODE_WSIZE_v2( nattr )              (DGL_NODE_SIZEOF_v2( nattr ) / sizeof(dglInt32_t) )
#define DGL_NODE_ALLOC_v2( nattr )              (malloc( DGL_NODE_SIZEOF_v2( nattr ) ) )

#define DGL_NODE_ID_v2(p)                                       ((p)[DGL_IN_NODEID_v2])
#define DGL_NODE_STATUS_v2(p)                           ((p)[DGL_IN_STATUS_v2])
#define DGL_NODE_EDGESET_OFFSET_v2(p)           ((p)[DGL_IN_EDGESET_OFFSET_v2])
#define DGL_NODE_ATTR_PTR_v2(p)                         ((p) + DGL_IN_ATTR_v2)

/*
 * Edgeset macros - addresses in a flat edge-area
 */
#define DGL_ILA_TOCNT_v2                                                0
#define DGL_ILA_SIZE_v2                                         1
#define DGL_ILA_TOARR_v2                                                DGL_ILA_SIZE_v2

#define DGL_EDGESET_SIZEOF_v2(C, lattr)         (sizeof( dglInt32_t ) * ((C) + 1))
#define DGL_EDGESET_WSIZE_v2(C, lattr)          (DGL_EDGESET_SIZEOF_v2(C, lattr) / sizeof(dglInt32_t))
#define DGL_EDGESET_ALLOC_v2(C, lattr)          (malloc(DGL_EDGESET_SIZEOF_v2(C, lattr)))
#define DGL_EDGESET_REALLOC_v2(P, C, lattr)     (realloc(P , DGL_EDGESET_SIZEOF_v2(C, lattr)))

#define DGL_EDGESET_EDGECOUNT_v2(p)                     ((p)[DGL_ILA_TOCNT_v2])
#define DGL_EDGESET_EDGEARRAY_PTR_v2(p)         ((p) + DGL_ILA_TOARR_v2)
#define DGL_EDGESET_EDGE_PTR_v2(pgrp,p,i)       DGL_EDGEBUFFER_SHIFT_v2(pgrp,*((p) + DGL_ILA_TOARR_v2 + (i)))

/*
 * Edge macros - addresses in a flat edge
 */
#define DGL_IL_HEAD_OFFSET_v2                                   0
#define DGL_IL_TAIL_OFFSET_v2                                   1
#define DGL_IL_STATUS_v2                                                2
#define DGL_IL_COST_v2                                          3
#define DGL_IL_ID_v2                                                    4
#define DGL_IL_ATTR_v2                                          5
#define DGL_IL_SIZE_v2                                          DGL_IL_ATTR_v2

#define DGL_EDGE_SIZEOF_v2( lattr )                     (sizeof( dglInt32_t ) * DGL_IL_SIZE_v2 + (lattr))
#define DGL_EDGE_WSIZE_v2( lattr )                      (DGL_EDGE_SIZEOF_v2( lattr ) / sizeof( dglInt32_t ))
#define DGL_EDGE_ALLOC_v2( lattr )                      (malloc( DGL_EDGE_SIZEOF_v2( lattr ) ))

#define DGL_EDGE_HEADNODE_OFFSET_v2(p)          ((p)[DGL_IL_HEAD_OFFSET_v2])
#define DGL_EDGE_TAILNODE_OFFSET_v2(p)          ((p)[DGL_IL_TAIL_OFFSET_v2])
#define DGL_EDGE_STATUS_v2(p)                                   ((p)[DGL_IL_STATUS_v2])
#define DGL_EDGE_COST_v2(p)                                     ((p)[DGL_IL_COST_v2])
#define DGL_EDGE_ID_v2(p)                                               ((p)[DGL_IL_ID_v2])
#define DGL_EDGE_ATTR_PTR_v2(p)                         ((p) + DGL_IL_ATTR_v2)
#define DGL_EDGE_HEADNODE_ID_v2(pgrp,pl)                ((pgrp->Flags&1)?\
                                                                                                DGL_NODE_ID_v2(pgrp->pNodeBuffer+DGL_EDGE_HEADNODE_OFFSET_v2(pl)):\
                                                                                                DGL_EDGE_HEADNODE_OFFSET_v2(pl))
#define DGL_EDGE_TAILNODE_ID_v2(pgrp,pl)                ((pgrp->Flags&1)?\
                                                                                                DGL_NODE_ID_v2(pgrp->pNodeBuffer+DGL_EDGE_TAILNODE_OFFSET_v2(pl)):\
                                                                                                DGL_EDGE_TAILNODE_OFFSET_v2(pl))

/*
 * Scan a node buffer
 */
#define DGL_FOREACH_NODE_v2(pgrp,pn)                    for((pn)=(dglInt32_t*)(pgrp)->pNodeBuffer;\
                                                                                                (pgrp)->pNodeBuffer && (pn)<(dglInt32_t*)((pgrp)->pNodeBuffer+(pgrp)->iNodeBuffer);\
                                                                                                (pn)+=DGL_NODE_WSIZE_v2((pgrp)->NodeAttrSize))
/*
 * Scan a edgeset
 */
#define DGL_FOREACH_EDGE_v2(pgrp,pla,pl,il)\
                for((il)=0, (pl)=DGL_EDGESET_EDGE_PTR_v2(pgrp,pla,il);\
                        (il)<DGL_EDGESET_EDGECOUNT_v2(pla);\
                        (il)++, (pl)=DGL_EDGESET_EDGE_PTR_v2(pgrp,pla,il))
/*
 * Node Buffer Utilities
 */
#define DGL_NODEBUFFER_SHIFT_v2(pgrp,o)         ((dglInt32_t*)((pgrp)->pNodeBuffer + (o)))
#define DGL_NODEBUFFER_OFFSET_v2(pgrp,p)                ((dglInt32_t)p - (dglInt32_t)(pgrp)->pNodeBuffer)

/*
 * Edge Buffer Utilities
 */
#define DGL_EDGEBUFFER_SHIFT_v2(pgrp,o)         ((dglInt32_t*)((pgrp)->pEdgeBuffer + (o)))
#define DGL_EDGEBUFFER_OFFSET_v2(pgrp,pl)               ((dglInt32_t)pl - (dglInt32_t)(pgrp)->pEdgeBuffer)




int dgl_add_edge_V2(dglGraph_s * pgraph,
                    dglInt32_t nHead,
                    dglInt32_t nTail,
                    dglInt32_t nCost,
                    dglInt32_t nEdge,
                    void *pvHeadAttr,
                    void *pvTailAttr, void *pvEdgeAttr, dglInt32_t nFlags);

int dgl_unflatten_V2(dglGraph_s * pgraph);
int dgl_flatten_V2(dglGraph_s * pgraph);
int dgl_initialize_V2(dglGraph_s * pgraph);
int dgl_release_V2(dglGraph_s * pgraph);
int dgl_write_V2(dglGraph_s * pgraph, int fd);
int dgl_read_V2(dglGraph_s * pgraph, int fd, int version);


int dgl_sp_cache_initialize_V2(dglGraph_s * pgraph, dglSPCache_s * pCache,
                               dglInt32_t nStart);
void dgl_sp_cache_release_V2(dglGraph_s * pgraph, dglSPCache_s * pCache);

int dgl_dijkstra_V2_TREE(dglGraph_s * pgraph,
                         dglSPReport_s ** ppReport,
                         dglInt32_t * pDistance,
                         dglInt32_t nStart,
                         dglInt32_t nDestination,
                         dglSPClip_fn fnClip,
                         void *pvClipArg, dglSPCache_s * pCache);
int dgl_dijkstra_V2_FLAT(dglGraph_s * pgraph,
                         dglSPReport_s ** ppReport,
                         dglInt32_t * pDistance,
                         dglInt32_t nStart,
                         dglInt32_t nDestination,
                         dglSPClip_fn fnClip,
                         void *pvClipArg, dglSPCache_s * pCache);
int dgl_dijkstra_V2(dglGraph_s * pgraph,
                    dglSPReport_s ** ppReport,
                    dglInt32_t * pDistance,
                    dglInt32_t nStart,
                    dglInt32_t nDestination,
                    dglSPClip_fn fnClip,
                    void *pvClipArg, dglSPCache_s * pCache);


int dgl_span_depthfirst_spanning_V2_TREE(dglGraph_s * pgraphIn,
                                         dglGraph_s * pgraphOut,
                                         dglInt32_t nVertex,
                                         void *pvVisited,
                                         dglSpanClip_fn fnClip,
                                         void *pvClipArg);
int dgl_span_depthfirst_spanning_V2_FLAT(dglGraph_s * pgraphIn,
                                         dglGraph_s * pgraphOut,
                                         dglInt32_t nVertex,
                                         void *pvVisited,
                                         dglSpanClip_fn fnClip,
                                         void *pvClipArg);
int dgl_depthfirst_spanning_V2(dglGraph_s * pgraphIn,
                               dglGraph_s * pgraphOut,
                               dglInt32_t nVertex,
                               void *pvVisited,
                               dglSpanClip_fn fnClip, void *pvClipArg);


int dgl_span_minimum_spanning_V2_TREE(dglGraph_s * pgraphIn,
                                      dglGraph_s * pgraphOut,
                                      dglInt32_t nVertex,
                                      dglSpanClip_fn fnClip, void *pvClipArg);
int dgl_span_minimum_spanning_V2_FLAT(dglGraph_s * pgraphIn,
                                      dglGraph_s * pgraphOut,
                                      dglInt32_t nVertex,
                                      dglSpanClip_fn fnClip, void *pvClipArg);
int dgl_minimum_spanning_V2(dglGraph_s * pgraphIn,
                            dglGraph_s * pgraphOut,
                            dglInt32_t nVertex,
                            dglSpanClip_fn fnClip, void *pvClipArg);


int dgl_add_node_V2(dglGraph_s * pgraph,
                    dglInt32_t nId, void *pvNodeAttr, dglInt32_t nFlags);
int dgl_del_node_outedge_V2(dglGraph_s * pgraph, dglInt32_t nNode,
                            dglInt32_t nEdge);
int dgl_del_node_inedge_V2(dglGraph_s * pgraph, dglInt32_t nNode,
                           dglInt32_t nEdge);
int dgl_del_node_V2(dglGraph_s * pgraph, dglInt32_t nId);
dglInt32_t *dgl_get_node_V2(dglGraph_s * pgraph, dglInt32_t nId);

dglInt32_t *dgl_get_edge_V2(dglGraph_s * pgraph, dglInt32_t nId);
int dgl_del_edge_V2(dglGraph_s * pgraph, dglInt32_t nId);

dglInt32_t *dgl_getnode_outedgeset_V2(dglGraph_s * pgraph,
                                      dglInt32_t * pnode);
dglInt32_t *dgl_getnode_inedgeset_V2(dglGraph_s * pgraph, dglInt32_t * pnode);

/*
 * Node Traversing
 */
int dgl_node_t_initialize_V2(dglGraph_s * pGraph, dglNodeTraverser_s * pT);
void dgl_node_t_release_V2(dglNodeTraverser_s * pT);
dglInt32_t *dgl_node_t_first_V2(dglNodeTraverser_s * pT);
dglInt32_t *dgl_node_t_next_V2(dglNodeTraverser_s * pT);
dglInt32_t *dgl_node_t_find_V2(dglNodeTraverser_s * pT, dglInt32_t nId);


/*
 * Edgeset Traversing
 */
int dgl_edgeset_t_initialize_V2(dglGraph_s * pGraph,
                                dglEdgesetTraverser_s * pTraverser,
                                dglInt32_t * pnEdgeset);
void dgl_edgeset_t_release_V2(dglEdgesetTraverser_s * pTraverser);
dglInt32_t *dgl_edgeset_t_first_V2(dglEdgesetTraverser_s * pTraverser);
dglInt32_t *dgl_edgeset_t_next_V2(dglEdgesetTraverser_s * pTraverser);


int dgl_edge_t_initialize_V2(dglGraph_s * pGraph,
                             dglEdgeTraverser_s * pTraverser,
                             dglEdgePrioritizer_s * pEP);
void dgl_edge_t_release_V2(dglEdgeTraverser_s * pTraverser);
dglInt32_t *dgl_edge_t_first_V2(dglEdgeTraverser_s * pT);
dglInt32_t *dgl_edge_t_next_V2(dglEdgeTraverser_s * pT);


#endif