include/xbt/graph.h

   1 /* Copyright (c) 2006, 2007, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #ifndef _XBT_GRAPH_H
   8 #define _XBT_GRAPH_H
   9 #include "xbt/misc.h"           /* SG_BEGIN_DECL */
  10 #include "xbt/dynar.h"
  11 SG_BEGIN_DECL()
  12
  13   /** @addtogroup XBT_graph
  14    *  @brief A graph data type with several interesting algorithms
  15    *
  16    * @{
  17    */
  18 typedef struct xbt_node *xbt_node_t;
  19 typedef struct xbt_edge *xbt_edge_t;
  20 typedef struct xbt_graph *xbt_graph_t;
  21
  22 /* API */
  23 XBT_PUBLIC(xbt_graph_t) xbt_graph_new_graph(unsigned short int directed,
  24                                             void *data);
  25 XBT_PUBLIC(xbt_node_t) xbt_graph_new_node(xbt_graph_t g, void *data);
  26 XBT_PUBLIC(xbt_edge_t) xbt_graph_new_edge(xbt_graph_t g, xbt_node_t src,
  27                                           xbt_node_t dst, void *data);
  28 XBT_PUBLIC(void *) xbt_graph_node_get_data(xbt_node_t node);
  29 XBT_PUBLIC(void) xbt_graph_node_set_data(xbt_node_t node, void *data);
  30 XBT_PUBLIC(void *) xbt_graph_edge_get_data(xbt_edge_t edge);
  31 XBT_PUBLIC(void) xbt_graph_edge_set_data(xbt_edge_t edge, void *data);
  32
  33 XBT_PUBLIC(xbt_edge_t) xbt_graph_get_edge(xbt_graph_t g, xbt_node_t src,
  34                                           xbt_node_t dst);
  35
  36 XBT_PUBLIC(void) xbt_graph_edge_set_length(xbt_edge_t e, double length);
  37 XBT_PUBLIC(double) xbt_graph_edge_get_length(xbt_edge_t e);
  38 XBT_PUBLIC(double *) xbt_graph_get_length_matrix(xbt_graph_t g);
  39
  40 XBT_PUBLIC(void) xbt_graph_free_node(xbt_graph_t g, xbt_node_t n,
  41                                      void_f_pvoid_t node_free_function,
  42                                      void_f_pvoid_t edge_free_function);
  43 XBT_PUBLIC(void) xbt_graph_free_edge(xbt_graph_t g, xbt_edge_t e,
  44                                      void_f_pvoid_t free_function);
  45 XBT_PUBLIC(void) xbt_graph_free_graph(xbt_graph_t g,
  46                                       void_f_pvoid_t node_free_function,
  47                                       void_f_pvoid_t edge_free_function,
  48                                       void_f_pvoid_t graph_free_function);
  49
  50 XBT_PUBLIC(int) __xbt_find_in_dynar(xbt_dynar_t dynar, void *p);
  51
  52 XBT_PUBLIC(xbt_dynar_t) xbt_graph_get_nodes(xbt_graph_t g);
  53 XBT_PUBLIC(xbt_dynar_t) xbt_graph_get_edges(xbt_graph_t g);
  54 XBT_PUBLIC(xbt_dynar_t) xbt_graph_node_get_outedges(xbt_node_t n);
  55 XBT_PUBLIC(xbt_node_t) xbt_graph_edge_get_source(xbt_edge_t e);
  56 XBT_PUBLIC(xbt_node_t) xbt_graph_edge_get_target(xbt_edge_t e);
  57 XBT_PUBLIC(xbt_graph_t) xbt_graph_read(const char *filename, void
  58                                        *(node_label_and_data) (xbt_node_t,
  59                                                                const char
  60                                                                *,
  61                                                                const char
  62                                                                *), void
  63                                        *(edge_label_and_data) (xbt_edge_t,
  64                                                                const char
  65                                                                *,
  66                                                                const char
  67                                                                *)
  68     );
  69
  70 XBT_PUBLIC(void) xbt_graph_export_graphviz(xbt_graph_t g,
  71                                            const char *filename, const char
  72                                            *(node_name) (xbt_node_t), const char
  73                                            *(edge_name) (xbt_edge_t));
  74 XBT_PUBLIC(void) xbt_graph_export_graphxml(xbt_graph_t g,
  75                                            const char *filename, const char
  76                                            *(node_name) (xbt_node_t), const char
  77                                            *(edge_name) (xbt_edge_t), const char
  78                                            *(node_data_print) (void *), const char
  79                                            *(edge_data_print) (void *));
  80 XBT_PUBLIC(xbt_graph_t) xbt_graph_load (const char *filename);
  81 XBT_PUBLIC(void) xbt_graph_save (xbt_graph_t span,
  82                                  const char *filename,
  83                                  const char *(nname) (xbt_node_t),
  84                                  const char *(ename) (xbt_edge_t));
  85
  86 /* Not implemented yet ! */
  87 /* void *xbt_graph_to_array(xbt_graph_t g);  */
  88 XBT_PUBLIC(xbt_node_t *) xbt_graph_shortest_paths(xbt_graph_t g);
  89
  90
  91
  92 /** @brief transforms the network structure of a directed acyclic graph given into a linear structure
  93     @return: an array containing the nodes of the graph sorted in order reverse to the path of exploration
  94             if a cycle is detected an exception is raised
  95   */
  96
  97 XBT_PUBLIC(xbt_node_t *) xbt_graph_topo_sort(xbt_graph_t g);
  98
  99 XBT_PUBLIC(xbt_edge_t *) xbt_graph_spanning_tree_prim(xbt_graph_t g);
 100
 101
 102
 103
 104 /** Convenient for loop : g is a graph, n a node, e an edge, b a bucket and i an item **/
 105
 106 /* #define xbt_graph_foreachInNeighbor(v,n,i)            \ */
 107 /*    for(i=xbt_fifo_get_first_item((v)->in);              \ */
 108 /*      ((i)?(n=((xbt_edge_t)((xbt_fifo_get_item_content(i)) */
 109 /* )->src):(NULL));\ */
 110 /*        i=xbt_fifo_get_next_item(i)) */
 111 /* #define xbt_graph_foreachOutNeighbor(v,n,i)           \ */
 112 /*    for(i=xbt_fifo_get_first_item((v)->out);             \ */
 113 /*      ((i)?(n=((xbt_edge_t)(xbt_fifo_get_item_content(i)))->dst):(NULL));\ */
 114 /*        i=xbt_fifo_get_next_item(i)) */
 115
 116
 117
 118 SG_END_DECL()
 119 #endif                          /* _XBT_GRAPH_H */
 120 /** @} */