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_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_t route = TO_ROUTE_FULL(*src_id, *dst_id);
  41       if (route) {
  42         if (xbt_dynar_length(route->link_list) == 1) {
  43           void *link =
  44               *(void **) xbt_dynar_get_ptr(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 void full_get_route(AS_t rc,
  65                            const char *src, const char *dst,
  66                            route_t res)
  67 {
  68
  69   /* set utils vars */
  70   routing_component_full_t routing = (routing_component_full_t) rc;
  71   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  72
  73   int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, src);
  74   int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, dst);
  75
  76   if (!src_id || !dst_id)
  77     THROWF(arg_error,0,"No route from '%s' to '%s'",src,dst);
  78
  79   route_t e_route = NULL;
  80   void *link;
  81   unsigned int cpt = 0;
  82
  83   e_route = TO_ROUTE_FULL(*src_id, *dst_id);
  84
  85   if (e_route) {
  86     res->src_gateway = xbt_strdup(e_route->src_gateway);
  87     res->dst_gateway = xbt_strdup(e_route->dst_gateway);
  88     xbt_dynar_foreach(e_route->link_list, cpt, link) {
  89       xbt_dynar_push(res->link_list, &link);
  90     }
  91   }
  92 }
  93
  94 static void full_finalize(AS_t rc)
  95 {
  96   routing_component_full_t routing = (routing_component_full_t) rc;
  97   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  98   int i, j;
  99   if (routing) {
 100     /* Delete routing table */
 101     for (i = 0; i < table_size; i++)
 102       for (j = 0; j < table_size; j++)
 103         generic_free_route(TO_ROUTE_FULL(i, j));
 104     xbt_free(routing->routing_table);
 105     model_generic_finalize(rc);
 106   }
 107 }
 108
 109 /* Creation routing model functions */
 110
 111 AS_t model_full_create(void)
 112 {
 113   routing_component_full_t new_component = (routing_component_full_t)
 114       model_generic_create_sized(sizeof(s_routing_component_full_t));
 115
 116   new_component->generic_routing.parse_route = model_full_set_route;
 117   new_component->generic_routing.parse_ASroute = model_full_set_route;
 118   new_component->generic_routing.get_route = full_get_route;
 119   new_component->generic_routing.get_onelink_routes =
 120       full_get_onelink_routes;
 121   new_component->generic_routing.finalize = full_finalize;
 122
 123   return (AS_t) new_component;
 124 }
 125
 126 void model_full_end(AS_t current_routing)
 127 {
 128   unsigned int i;
 129   route_t e_route;
 130
 131   /* set utils vars */
 132   routing_component_full_t routing =
 133       ((routing_component_full_t) current_routing);
 134   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 135
 136   /* Create table if necessary */
 137   if(!routing->routing_table)
 138           routing->routing_table = xbt_new0(route_t, table_size * table_size);
 139
 140   /* Add the loopback if needed */
 141   if (current_routing->hierarchy == SURF_ROUTING_BASE) {
 142     for (i = 0; i < table_size; i++) {
 143       e_route = TO_ROUTE_FULL(i, i);
 144       if (!e_route) {
 145         e_route = xbt_new0(s_route_t, 1);
 146         e_route->src_gateway = NULL;
 147         e_route->dst_gateway = NULL;
 148         e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 149         xbt_dynar_push(e_route->link_list,
 150                        &global_routing->loopback);
 151         TO_ROUTE_FULL(i, i) = e_route;
 152       }
 153     }
 154   }
 155 }
 156
 157 static int surf_pointer_resource_cmp(const void *a, const void *b) {
 158   return a != b;
 159 }
 160
 161 void model_full_set_route(AS_t rc, const char *src,
 162                 const char *dst, route_t route)
 163 {
 164         int *src_id, *dst_id;
 165         src_id = xbt_dict_get_or_null(rc->to_index, src);
 166         dst_id = xbt_dict_get_or_null(rc->to_index, dst);
 167         routing_component_full_t routing = ((routing_component_full_t) rc);
 168         size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 169
 170         xbt_assert(src_id, "Network elements %s not found", src);
 171         xbt_assert(dst_id, "Network elements %s not found", dst);
 172
 173         xbt_assert(!xbt_dynar_is_empty(route->link_list),
 174                           "Invalid count of links, must be greater than zero (%s,%s)",
 175                           src, dst);
 176
 177         if(!routing->routing_table)
 178                 routing->routing_table = xbt_new0(route_t, table_size * table_size);
 179
 180         if(TO_ROUTE_FULL(*src_id, *dst_id))
 181         {
 182                 char * link_name;
 183                 unsigned int i;
 184                 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 185                 xbt_dynar_foreach(route->link_list,i,link_name)
 186                 {
 187                         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 188                         xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 189                         xbt_dynar_push(link_route_to_test,&link);
 190                 }
 191                 xbt_assert(!xbt_dynar_compare(
 192                           (void*)TO_ROUTE_FULL(*src_id, *dst_id)->link_list,
 193                           (void*)link_route_to_test,
 194                           (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 195                           "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);
 196         }
 197         else
 198         {
 199                   if(!route->dst_gateway && !route->src_gateway)
 200                           XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 201                   else{
 202                           XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
 203                                  route->src_gateway, dst, route->dst_gateway);
 204                           if(routing_get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
 205                                   xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
 206                           if(routing_get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
 207                                   xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
 208                   }
 209               TO_ROUTE_FULL(*src_id, *dst_id) = generic_new_extended_route(rc->hierarchy,route,1);
 210               xbt_dynar_shrink(TO_ROUTE_FULL(*src_id, *dst_id)->link_list, 0);
 211         }
 212
 213         if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 214                 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
 215         {
 216                 if(route->dst_gateway && route->src_gateway)
 217                 {
 218                   char *gw_tmp ;
 219                   gw_tmp = route->src_gateway;
 220                   route->src_gateway = route->dst_gateway;
 221                   route->dst_gateway = gw_tmp;
 222                 }
 223                 if(TO_ROUTE_FULL(*dst_id, *src_id))
 224                 {
 225                         char * link_name;
 226                         unsigned int i;
 227                         xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 228                         for(i=xbt_dynar_length(route->link_list) ;i>0 ;i--)
 229                         {
 230                                 link_name = xbt_dynar_get_as(route->link_list,i-1,void *);
 231                                 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 232                                 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 233                                 xbt_dynar_push(link_route_to_test,&link);
 234                         }
 235                         xbt_assert(!xbt_dynar_compare(
 236                                   (void*)TO_ROUTE_FULL(*dst_id, *src_id)->link_list,
 237                               (void*)link_route_to_test,
 238                                   (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 239                                   "The route between \"%s\" and \"%s\" already exists", src,dst);
 240                 }
 241                 else
 242                 {
 243                           if(!route->dst_gateway && !route->src_gateway)
 244                                   XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 245                           else
 246                                   XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
 247                                          route->src_gateway, src, route->dst_gateway);
 248                       TO_ROUTE_FULL(*dst_id, *src_id) = generic_new_extended_route(rc->hierarchy,route,0);
 249                       xbt_dynar_shrink(TO_ROUTE_FULL(*dst_id, *src_id)->link_list, 0);
 250                 }
 251         }
 252
 253         generic_free_route((route_t)route) ;
 254 }