GRASS Programmer's Manual  6.4.1(2011)
graph_v1.h
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00001 /* LIBDGL -- a Directed Graph Library implementation
00002  * Copyright (C) 2002 Roberto Micarelli
00003  *
00004  * This program is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  */
00018 
00019 /*
00020  * best view tabstop=4
00021  */
00022 
00023 #ifndef _DGL_GRAPH_V1_H_
00024 #define _DGL_GRAPH_V1_H_
00025 
00026 #ifdef DGL_STATS
00027 #include <time.h>
00028 #endif
00029 
00030 /*
00031  * Node macros - addresses in a flat node
00032  */
00033 #define DGL_IN_NODEID_v1                0
00034 #define DGL_IN_STATUS_v1                1
00035 #define DGL_IN_TAIL_OFFSET_v1   2
00036 #define DGL_IN_ATTR_v1                  3
00037 #define DGL_IN_SIZE_v1                  DGL_IN_ATTR_v1
00038 
00039 #define DGL_NODE_SIZEOF_v1( nattr  )    (sizeof( dglInt32_t ) * DGL_IN_SIZE_v1 + (nattr) )
00040 #define DGL_NODE_WSIZE_v1( nattr )              (DGL_NODE_SIZEOF_v1( nattr ) / sizeof(dglInt32_t) )
00041 #define DGL_NODE_ALLOC_v1( nattr )      (malloc( DGL_NODE_SIZEOF_v1( nattr ) ) )
00042 
00043 #define DGL_NODE_ID_v1(p)                               ((p)[DGL_IN_NODEID_v1])
00044 #define DGL_NODE_STATUS_v1(p)                   ((p)[DGL_IN_STATUS_v1])
00045 #define DGL_NODE_EDGESET_OFFSET_v1(p)   ((p)[DGL_IN_TAIL_OFFSET_v1])
00046 #define DGL_NODE_ATTR_PTR_v1(p)                 ((p) + DGL_IN_ATTR_v1)
00047 
00048 /*
00049  * Edgeset macros - addresses in a flat edge-area
00050  */
00051 #define DGL_ILA_TOCNT_v1        0
00052 #define DGL_ILA_SIZE_v1         1
00053 #define DGL_ILA_TOARR_v1        DGL_ILA_SIZE_v1
00054 
00055 #define DGL_EDGESET_SIZEOF_v1(C, lattr)         (sizeof( dglInt32_t ) * (DGL_ILA_SIZE_v1) + DGL_EDGE_SIZEOF_v1(lattr) * (C))
00056 #define DGL_EDGESET_WSIZE_v1(C, lattr)          (DGL_EDGESET_SIZEOF_v1(C, lattr) / sizeof(dglInt32_t))
00057 #define DGL_EDGESET_ALLOC_v1(C, lattr)          (malloc(DGL_EDGESET_SIZEOF_v1(C, lattr)))
00058 #define DGL_EDGESET_REALLOC_v1(P, C, lattr)     (realloc(P , DGL_EDGESET_SIZEOF_v1(C, lattr)))
00059 
00060 #define DGL_EDGESET_EDGECOUNT_v1(p)                     ((p)[DGL_ILA_TOCNT_v1])
00061 #define DGL_EDGESET_EDGEARRAY_PTR_v1(p)         ((p) + DGL_ILA_TOARR_v1)
00062 #define DGL_EDGESET_EDGE_PTR_v1(p,i,C)          (((p) + DGL_ILA_TOARR_v1) + (i) * DGL_EDGE_WSIZE_v1(C))
00063 
00064 /*
00065  * Edge macros - addresses in a flat edge
00066  */
00067 #define DGL_IL_HEAD_OFFSET_v1   0
00068 #define DGL_IL_TAIL_OFFSET_v1   1
00069 #define DGL_IL_COST_v1                  2
00070 #define DGL_IL_ID_v1                    3
00071 #define DGL_IL_ATTR_v1                  4
00072 #define DGL_IL_SIZE_v1                  DGL_IL_ATTR_v1
00073 
00074 #define DGL_EDGE_SIZEOF_v1( lattr )     (sizeof( dglInt32_t ) * DGL_IL_SIZE_v1 + (lattr))
00075 #define DGL_EDGE_WSIZE_v1( lattr )              (DGL_EDGE_SIZEOF_v1( lattr ) / sizeof( dglInt32_t ))
00076 #define DGL_EDGE_ALLOC_v1( lattr )      (malloc( DGL_EDGE_SIZEOF_v1( lattr ) ))
00077 
00078 #define DGL_EDGE_HEADNODE_OFFSET_v1(p)          ((p)[DGL_IL_HEAD_OFFSET_v1])
00079 #define DGL_EDGE_TAILNODE_OFFSET_v1(p)          ((p)[DGL_IL_TAIL_OFFSET_v1])
00080 #define DGL_EDGE_COST_v1(p)                                     ((p)[DGL_IL_COST_v1])
00081 #define DGL_EDGE_ID_v1(p)                                       ((p)[DGL_IL_ID_v1])
00082 #define DGL_EDGE_ATTR_PTR_v1(p)                         ((p) + DGL_IL_ATTR_v1)
00083 #define DGL_EDGE_HEADNODE_ID_v1(pgrp,pl)        ((pgrp->Flags&1)?\
00084                                                                                                 DGL_NODE_ID_v1(pgrp->pNodeBuffer+DGL_EDGE_HEADNODE_OFFSET_v1(pl)):\
00085                                                                                                 DGL_EDGE_HEADNODE_OFFSET_v1(pl))
00086 #define DGL_EDGE_TAILNODE_ID_v1(pgrp,pl)        ((pgrp->Flags&1)?\
00087                                                                                                 DGL_NODE_ID_v1(pgrp->pNodeBuffer+DGL_EDGE_TAILNODE_OFFSET_v1(pl)):\
00088                                                                                                 DGL_EDGE_TAILNODE_OFFSET_v1(pl))
00089 
00090 /*
00091  * Scan a node buffer
00092  */
00093 #define DGL_FOREACH_NODE_v1(pgrp,pn)    for((pn)=(dglInt32_t*)(pgrp)->pNodeBuffer;\
00094                                                                                         (pgrp)->pNodeBuffer && (pn)<(dglInt32_t*)((pgrp)->pNodeBuffer+(pgrp)->iNodeBuffer);\
00095                                                                                         (pn)+=DGL_NODE_WSIZE_v1((pgrp)->NodeAttrSize))
00096 /*
00097  * Scan a edgeset
00098  */
00099 #define DGL_FOREACH_EDGE_v1(pgrp,pla,pl)        for((pl)=DGL_EDGESET_EDGEARRAY_PTR_v1(pla);\
00100                                                                                                 (pl)<(pla)+DGL_EDGE_WSIZE_v1((pgrp)->EdgeAttrSize)*DGL_EDGESET_EDGECOUNT_v1(pla);\
00101                                                                                                 (pl)+=DGL_EDGE_WSIZE_v1((pgrp)->EdgeAttrSize))
00102 /*
00103  * Node Buffer Utilities
00104  */
00105 #define DGL_NODEBUFFER_SHIFT_v1(pgrp,o)         ((dglInt32_t*)((pgrp)->pNodeBuffer + (o)))
00106 #define DGL_NODEBUFFER_OFFSET_v1(pgrp,p)        ((dglInt32_t)p - (dglInt32_t)(pgrp)->pNodeBuffer)
00107 
00108 /*
00109  * Edge Buffer Utilities
00110  */
00111 #define DGL_EDGEBUFFER_SHIFT_v1(pgrp,o)         ((dglInt32_t*)((pgrp)->pEdgeBuffer + (o)))
00112 #define DGL_EDGEBUFFER_OFFSET_v1(pgrp,pl)       ((dglInt32_t)pl - (dglInt32_t)(pgrp)->pEdgeBuffer)
00113 
00114 
00115 
00116 
00117 int dgl_add_edge_V1(dglGraph_s * pgraph,
00118                     dglInt32_t nHead,
00119                     dglInt32_t nTail,
00120                     dglInt32_t nCost,
00121                     dglInt32_t nEdge,
00122                     void *pvHeadAttr,
00123                     void *pvTailAttr, void *pvEdgeAttr, dglInt32_t nFlags);
00124 
00125 int dgl_unflatten_V1(dglGraph_s * pgraph);
00126 int dgl_flatten_V1(dglGraph_s * pgraph);
00127 int dgl_initialize_V1(dglGraph_s * pgraph);
00128 int dgl_release_V1(dglGraph_s * pgraph);
00129 int dgl_write_V1(dglGraph_s * pgraph, int fd);
00130 int dgl_read_V1(dglGraph_s * pgraph, int fd);
00131 
00132 
00133 int dgl_sp_cache_initialize_V1(dglGraph_s * pgraph, dglSPCache_s * pCache,
00134                                dglInt32_t nStart);
00135 void dgl_sp_cache_release_V1(dglGraph_s * pgraph, dglSPCache_s * pCache);
00136 
00137 int dgl_dijkstra_V1_TREE(dglGraph_s * pgraph,
00138                          dglSPReport_s ** ppReport,
00139                          dglInt32_t * pDistance,
00140                          dglInt32_t nStart,
00141                          dglInt32_t nDestination,
00142                          dglSPClip_fn fnClip,
00143                          void *pvClipArg, dglSPCache_s * pCache);
00144 int dgl_dijkstra_V1_FLAT(dglGraph_s * pgraph,
00145                          dglSPReport_s ** ppReport,
00146                          dglInt32_t * pDistance,
00147                          dglInt32_t nStart,
00148                          dglInt32_t nDestination,
00149                          dglSPClip_fn fnClip,
00150                          void *pvClipArg, dglSPCache_s * pCache);
00151 int dgl_dijkstra_V1(dglGraph_s * pgraph,
00152                     dglSPReport_s ** ppReport,
00153                     dglInt32_t * pDistance,
00154                     dglInt32_t nStart,
00155                     dglInt32_t nDestination,
00156                     dglSPClip_fn fnClip,
00157                     void *pvClipArg, dglSPCache_s * pCache);
00158 
00159 
00160 int dgl_span_depthfirst_spanning_V1_TREE(dglGraph_s * pgraphIn,
00161                                          dglGraph_s * pgraphOut,
00162                                          dglInt32_t nVertex,
00163                                          void *pvVisited,
00164                                          dglSpanClip_fn fnClip,
00165                                          void *pvClipArg);
00166 int dgl_span_depthfirst_spanning_V1_FLAT(dglGraph_s * pgraphIn,
00167                                          dglGraph_s * pgraphOut,
00168                                          dglInt32_t nVertex,
00169                                          void *pvVisited,
00170                                          dglSpanClip_fn fnClip,
00171                                          void *pvClipArg);
00172 int dgl_depthfirst_spanning_V1(dglGraph_s * pgraphIn,
00173                                dglGraph_s * pgraphOut,
00174                                dglInt32_t nVertex,
00175                                void *pvVisited,
00176                                dglSpanClip_fn fnClip, void *pvClipArg);
00177 
00178 
00179 int dgl_span_minimum_spanning_V1_TREE(dglGraph_s * pgraphIn,
00180                                       dglGraph_s * pgraphOut,
00181                                       dglInt32_t nVertex,
00182                                       dglSpanClip_fn fnClip, void *pvClipArg);
00183 int dgl_span_minimum_spanning_V1_FLAT(dglGraph_s * pgraphIn,
00184                                       dglGraph_s * pgraphOut,
00185                                       dglInt32_t nVertex,
00186                                       dglSpanClip_fn fnClip, void *pvClipArg);
00187 int dgl_minimum_spanning_V1(dglGraph_s * pgraphIn,
00188                             dglGraph_s * pgraphOut,
00189                             dglInt32_t nVertex,
00190                             dglSpanClip_fn fnClip, void *pvClipArg);
00191 
00192 
00193 int dgl_add_node_V1(dglGraph_s * pgraph,
00194                     dglInt32_t nId, void *pvNodeAttr, dglInt32_t nFlags);
00195 int dgl_del_node_V1(dglGraph_s * pgraph, dglInt32_t nId);
00196 dglInt32_t *dgl_get_node_V1(dglGraph_s * pgraph, dglInt32_t nId);
00197 
00198 dglInt32_t *dgl_get_edge_V1(dglGraph_s * pgraph, dglInt32_t nId);
00199 int dgl_del_edge_V1(dglGraph_s * pgraph, dglInt32_t nId);
00200 
00201 dglInt32_t *dgl_getnode_outedgeset_V1(dglGraph_s * pgraph,
00202                                       dglInt32_t * pnode);
00203 
00204 /*
00205  * Node Traversing
00206  */
00207 int dgl_node_t_initialize_V1(dglGraph_s * pGraph, dglNodeTraverser_s * pT);
00208 void dgl_node_t_release_V1(dglNodeTraverser_s * pT);
00209 dglInt32_t *dgl_node_t_first_V1(dglNodeTraverser_s * pT);
00210 dglInt32_t *dgl_node_t_next_V1(dglNodeTraverser_s * pT);
00211 dglInt32_t *dgl_node_t_find_V1(dglNodeTraverser_s * pT, dglInt32_t nId);
00212 
00213 
00214 /*
00215  * Edgeset Traversing
00216  */
00217 int dgl_edgeset_t_initialize_V1(dglGraph_s * pGraph,
00218                                 dglEdgesetTraverser_s * pTraverser,
00219                                 dglInt32_t * pnEdgeset);
00220 void dgl_edgeset_t_release_V1(dglEdgesetTraverser_s * pTraverser);
00221 dglInt32_t *dgl_edgeset_t_first_V1(dglEdgesetTraverser_s * pTraverser);
00222 dglInt32_t *dgl_edgeset_t_next_V1(dglEdgesetTraverser_s * pTraverser);
00223 
00224 
00225 int dgl_edge_t_initialize_V1(dglGraph_s * pGraph,
00226                              dglEdgeTraverser_s * pTraverser,
00227                              dglEdgePrioritizer_s * pEP);
00228 void dgl_edge_t_release_V1(dglEdgeTraverser_s * pTraverser);
00229 dglInt32_t *dgl_edge_t_first_V1(dglEdgeTraverser_s * pT);
00230 dglInt32_t *dgl_edge_t_next_V1(dglEdgeTraverser_s * pT);
00231 
00232 
00233 
00234 
00235 #endif
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