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