src/surf/surf_routing_full.c

   1 /* Copyright (c) 2009, 2010, 2011. 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 #include "surf_routing_private.h"
   8
   9 /* Global vars */
  10 extern routing_global_t global_routing;
  11 extern routing_component_t current_routing;
  12 extern model_type_t current_routing_model;
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_full, surf, "Routing part of surf");
  15
  16 #define TO_ROUTE_FULL(i,j) routing->routing_table[(i)+(j)*table_size]
  17
  18 /* Routing model structure */
  19
  20 typedef struct s_routing_component_full {
  21   s_routing_component_t generic_routing;
  22   route_extended_t *routing_table;
  23 } s_routing_component_full_t, *routing_component_full_t;
  24
  25 /* Business methods */
  26 static xbt_dynar_t full_get_onelink_routes(routing_component_t rc)
  27 {
  28   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
  29
  30   routing_component_full_t routing = (routing_component_full_t) rc;
  31   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  32   xbt_dict_cursor_t c1 = NULL, c2 = NULL;
  33   char *k1, *d1, *k2, *d2;
  34   xbt_dict_foreach(routing->generic_routing.to_index, c1, k1, d1) {
  35     xbt_dict_foreach(routing->generic_routing.to_index, c2, k2, d2) {
  36       int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k1);
  37       int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k2);
  38       xbt_assert(src_id
  39                   && dst_id,
  40                   "Ask for route \"from\"(%s)  or \"to\"(%s) no found in the local table",
  41                   k1, k2);
  42       route_extended_t route = TO_ROUTE_FULL(*src_id, *dst_id);
  43       if (route) {
  44         if (xbt_dynar_length(route->generic_route.link_list) == 1) {
  45           void *link =
  46               *(void **) xbt_dynar_get_ptr(route->generic_route.link_list,
  47                                            0);
  48           onelink_t onelink = xbt_new0(s_onelink_t, 1);
  49           onelink->link_ptr = link;
  50           if (routing->generic_routing.hierarchy == SURF_ROUTING_BASE) {
  51             onelink->src = xbt_strdup(k1);
  52             onelink->dst = xbt_strdup(k2);
  53           } else if (routing->generic_routing.hierarchy ==
  54                      SURF_ROUTING_RECURSIVE) {
  55             onelink->src = xbt_strdup(route->src_gateway);
  56             onelink->dst = xbt_strdup(route->dst_gateway);
  57           }
  58           xbt_dynar_push(ret, &onelink);
  59         }
  60       }
  61     }
  62   }
  63   return ret;
  64 }
  65
  66 static route_extended_t full_get_route(routing_component_t rc,
  67                                        const char *src, const char *dst)
  68 {
  69   xbt_assert(rc && src
  70               && dst,
  71               "Invalid params for \"get_route\" function at AS \"%s\"",
  72               rc->name);
  73
  74   /* set utils vars */
  75   routing_component_full_t routing = (routing_component_full_t) rc;
  76   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  77
  78   int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, src);
  79   int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, dst);
  80   xbt_assert(src_id
  81               && dst_id,
  82               "Ask for route \"from\"(%s)  or \"to\"(%s) no found in the local table",
  83               src, dst);
  84
  85   route_extended_t e_route = NULL;
  86   route_extended_t new_e_route = NULL;
  87   void *link;
  88   unsigned int cpt = 0;
  89
  90   e_route = TO_ROUTE_FULL(*src_id, *dst_id);
  91
  92   if (e_route) {
  93     new_e_route = xbt_new0(s_route_extended_t, 1);
  94     new_e_route->src_gateway = xbt_strdup(e_route->src_gateway);
  95     new_e_route->dst_gateway = xbt_strdup(e_route->dst_gateway);
  96     new_e_route->generic_route.link_list =
  97         xbt_dynar_new(global_routing->size_of_link, NULL);
  98     xbt_dynar_foreach(e_route->generic_route.link_list, cpt, link) {
  99       xbt_dynar_push(new_e_route->generic_route.link_list, &link);
 100     }
 101   }
 102   return new_e_route;
 103 }
 104
 105 static void full_finalize(routing_component_t rc)
 106 {
 107   routing_component_full_t routing = (routing_component_full_t) rc;
 108   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 109   int i, j;
 110   if (routing) {
 111     /* Delete routing table */
 112     for (i = 0; i < table_size; i++)
 113       for (j = 0; j < table_size; j++)
 114         generic_free_extended_route(TO_ROUTE_FULL(i, j));
 115     xbt_free(routing->routing_table);
 116     /* Delete bypass dict */
 117     xbt_dict_free(&rc->bypassRoutes);
 118     /* Delete index dict */
 119     xbt_dict_free(&rc->to_index);
 120     /* Delete structure */
 121     xbt_free(rc);
 122   }
 123 }
 124
 125 /* Creation routing model functions */
 126
 127 routing_component_t model_full_create(void)
 128 {
 129   routing_component_full_t new_component = (routing_component_full_t)
 130       routmod_generic_create(sizeof(s_routing_component_full_t));
 131
 132   new_component->generic_routing.parse_route = model_full_set_route;
 133   new_component->generic_routing.parse_ASroute = model_full_set_route;
 134   new_component->generic_routing.get_route = full_get_route;
 135   new_component->generic_routing.get_onelink_routes =
 136       full_get_onelink_routes;
 137   new_component->generic_routing.finalize = full_finalize;
 138
 139   return (routing_component_t) new_component;
 140 }
 141
 142 void model_full_end(void)
 143 {
 144   unsigned int i;
 145   route_extended_t e_route;
 146
 147   /* set utils vars */
 148   routing_component_full_t routing =
 149       ((routing_component_full_t) current_routing);
 150   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 151
 152   /* Create table if necessary */
 153   if(!routing->routing_table)
 154           routing->routing_table = xbt_new0(route_extended_t, table_size * table_size);
 155
 156   /* Add the loopback if needed */
 157   if (current_routing->hierarchy == SURF_ROUTING_BASE) {
 158     for (i = 0; i < table_size; i++) {
 159       e_route = TO_ROUTE_FULL(i, i);
 160       if (!e_route) {
 161         e_route = xbt_new0(s_route_extended_t, 1);
 162         e_route->src_gateway = NULL;
 163         e_route->dst_gateway = NULL;
 164         e_route->generic_route.link_list =
 165             xbt_dynar_new(global_routing->size_of_link, NULL);
 166         xbt_dynar_push(e_route->generic_route.link_list,
 167                        &global_routing->loopback);
 168         TO_ROUTE_FULL(i, i) = e_route;
 169       }
 170     }
 171   }
 172 }
 173
 174 static int surf_pointer_resource_cmp(const void *a, const void *b) {
 175   return a != b;
 176 }
 177
 178 void model_full_set_route(routing_component_t rc, const char *src,
 179                 const char *dst, name_route_extended_t route)
 180 {
 181         int *src_id, *dst_id;
 182         src_id = xbt_dict_get_or_null(rc->to_index, src);
 183         dst_id = xbt_dict_get_or_null(rc->to_index, dst);
 184         routing_component_full_t routing = ((routing_component_full_t) rc);
 185         size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 186
 187         xbt_assert(src_id, "Network elements %s not found", src);
 188         xbt_assert(dst_id, "Network elements %s not found", dst);
 189
 190         xbt_assert(xbt_dynar_length(route->generic_route.link_list) > 0,
 191                           "Invalid count of links, must be greater than zero (%s,%s)",
 192                           src, dst);
 193
 194         if(!routing->routing_table)
 195                 routing->routing_table = xbt_new0(route_extended_t, table_size * table_size);
 196
 197         if(TO_ROUTE_FULL(*src_id, *dst_id))
 198         {
 199                 char * link_name;
 200                 unsigned int i;
 201                 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 202                 xbt_dynar_foreach(route->generic_route.link_list,i,link_name)
 203                 {
 204                         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 205                         xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 206                         xbt_dynar_push(link_route_to_test,&link);
 207                 }
 208                 xbt_assert(!xbt_dynar_compare(
 209                           (void*)TO_ROUTE_FULL(*src_id, *dst_id)->generic_route.link_list,
 210                           (void*)link_route_to_test,
 211                           (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 212                           "The route between \"%s\" and \"%s\" already exists. If you are trying to define a reverse route, you must set the symmetrical=no attribute to your routes tags.", src,dst);
 213         }
 214         else
 215         {
 216                   if(!route->dst_gateway && !route->src_gateway)
 217                           XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 218                   else{
 219                           XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
 220                                  route->src_gateway, dst, route->dst_gateway);
 221                           if(global_routing->get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
 222                                   xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
 223                           if(global_routing->get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
 224                                   xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
 225                   }
 226               TO_ROUTE_FULL(*src_id, *dst_id) = generic_new_extended_route(rc->hierarchy,route,1);
 227               xbt_dynar_shrink(TO_ROUTE_FULL(*src_id, *dst_id)->generic_route.link_list, 0);
 228         }
 229
 230         if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 231                 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
 232         {
 233                 if(route->dst_gateway && route->src_gateway)
 234                 {
 235                   char *gw_tmp ;
 236                   gw_tmp = route->src_gateway;
 237                   route->src_gateway = route->dst_gateway;
 238                   route->dst_gateway = gw_tmp;
 239                 }
 240                 if(TO_ROUTE_FULL(*dst_id, *src_id))
 241                 {
 242                         char * link_name;
 243                         unsigned int i;
 244                         xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 245                         for(i=xbt_dynar_length(route->generic_route.link_list) ;i>0 ;i--)
 246                         {
 247                                 link_name = xbt_dynar_get_as(route->generic_route.link_list,i-1,void *);
 248                                 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 249                                 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 250                                 xbt_dynar_push(link_route_to_test,&link);
 251                         }
 252                         xbt_assert(!xbt_dynar_compare(
 253                                   (void*)TO_ROUTE_FULL(*dst_id, *src_id)->generic_route.link_list,
 254                               (void*)link_route_to_test,
 255                                   (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 256                                   "The route between \"%s\" and \"%s\" already exists", src,dst);
 257                 }
 258                 else
 259                 {
 260                           if(!route->dst_gateway && !route->src_gateway)
 261                                   XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 262                           else
 263                                   XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
 264                                          route->src_gateway, src, route->dst_gateway);
 265                       TO_ROUTE_FULL(*dst_id, *src_id) = generic_new_extended_route(rc->hierarchy,route,0);
 266                       xbt_dynar_shrink(TO_ROUTE_FULL(*dst_id, *src_id)->generic_route.link_list, 0);
 267                 }
 268         }
 269
 270         if (rc->hierarchy == SURF_ROUTING_BASE) generic_free_route((route_t)route) ;
 271         else generic_free_extended_route((route_extended_t)route);
 272 }