GRASS Programmer's Manual 6.4.1(2011)
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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