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 {
  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 void *model_full_create(void)
 128 {
 129   routing_component_full_t new_component =
 130       xbt_new0(s_routing_component_full_t, 1);
 131   new_component->generic_routing.set_processing_unit =
 132       generic_set_processing_unit;
 133   new_component->generic_routing.set_autonomous_system =
 134       generic_set_autonomous_system;
 135   new_component->generic_routing.set_route = model_full_set_route;
 136   new_component->generic_routing.set_ASroute = model_full_set_route;
 137   new_component->generic_routing.set_bypassroute = generic_set_bypassroute;
 138   new_component->generic_routing.get_route = full_get_route;
 139   new_component->generic_routing.get_latency = generic_get_link_latency;
 140   new_component->generic_routing.get_onelink_routes =
 141       full_get_onelink_routes;
 142   new_component->generic_routing.get_bypass_route =
 143       generic_get_bypassroute;
 144   new_component->generic_routing.finalize = full_finalize;
 145   new_component->generic_routing.to_index = xbt_dict_new();
 146   new_component->generic_routing.bypassRoutes = xbt_dict_new();
 147   new_component->generic_routing.get_network_element_type = get_network_element_type;
 148   return new_component;
 149 }
 150
 151 void model_full_load(void)
 152 {
 153   /* use "surfxml_add_callback" to add a parse function call */
 154 }
 155
 156 void model_full_unload(void)
 157 {
 158   /* use "surfxml_del_callback" to remove a parse function call */
 159 }
 160
 161 void model_full_end(void)
 162 {
 163   unsigned int i;
 164   route_extended_t e_route;
 165
 166   /* set utils vars */
 167   routing_component_full_t routing =
 168       ((routing_component_full_t) current_routing);
 169   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 170
 171   /* Create table if necessary */
 172   if(!routing->routing_table)
 173           routing->routing_table = xbt_new0(route_extended_t, table_size * table_size);
 174
 175   /* Add the loopback if needed */
 176   if (current_routing->hierarchy == SURF_ROUTING_BASE) {
 177     for (i = 0; i < table_size; i++) {
 178       e_route = TO_ROUTE_FULL(i, i);
 179       if (!e_route) {
 180         e_route = xbt_new0(s_route_extended_t, 1);
 181         e_route->src_gateway = NULL;
 182         e_route->dst_gateway = NULL;
 183         e_route->generic_route.link_list =
 184             xbt_dynar_new(global_routing->size_of_link, NULL);
 185         xbt_dynar_push(e_route->generic_route.link_list,
 186                        &global_routing->loopback);
 187         TO_ROUTE_FULL(i, i) = e_route;
 188       }
 189     }
 190   }
 191 }
 192
 193 void model_full_set_route(routing_component_t rc, const char *src,
 194                 const char *dst, name_route_extended_t route)
 195 {
 196         int *src_id, *dst_id;
 197         src_id = xbt_dict_get_or_null(rc->to_index, src);
 198         dst_id = xbt_dict_get_or_null(rc->to_index, dst);
 199         routing_component_full_t routing = ((routing_component_full_t) rc);
 200         size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 201
 202         xbt_assert(src_id, "Network elements %s not found", src);
 203         xbt_assert(dst_id, "Network elements %s not found", dst);
 204
 205         xbt_assert(xbt_dynar_length(route->generic_route.link_list) > 0,
 206                           "Invalid count of links, must be greater than zero (%s,%s)",
 207                           src, dst);
 208
 209         if(!routing->routing_table)
 210                 routing->routing_table = xbt_new0(route_extended_t, table_size * table_size);
 211
 212         if(TO_ROUTE_FULL(*src_id, *dst_id))
 213         {
 214                 char * link_name;
 215                 unsigned int i;
 216                 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 217                 xbt_dynar_foreach(route->generic_route.link_list,i,link_name)
 218                 {
 219                         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 220                         xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 221                         xbt_dynar_push(link_route_to_test,&link);
 222                 }
 223                 xbt_assert(!xbt_dynar_compare(
 224                           (void*)TO_ROUTE_FULL(*src_id, *dst_id)->generic_route.link_list,
 225                           (void*)link_route_to_test,
 226                           (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 227                           "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);
 228         }
 229         else
 230         {
 231                   if(!route->dst_gateway && !route->src_gateway)
 232                           XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 233                   else{
 234                           XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
 235                                  route->src_gateway, dst, route->dst_gateway);
 236                           if(global_routing->get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
 237                                   xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
 238                           if(global_routing->get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
 239                                   xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
 240                   }
 241               TO_ROUTE_FULL(*src_id, *dst_id) = generic_new_extended_route(rc->hierarchy,route,1);
 242               xbt_dynar_shrink(TO_ROUTE_FULL(*src_id, *dst_id)->generic_route.link_list, 0);
 243         }
 244
 245         if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 246                 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
 247         {
 248                 if(route->dst_gateway && route->src_gateway)
 249                 {
 250                   char *gw_tmp ;
 251                   gw_tmp = route->src_gateway;
 252                   route->src_gateway = route->dst_gateway;
 253                   route->dst_gateway = gw_tmp;
 254                 }
 255                 if(TO_ROUTE_FULL(*dst_id, *src_id))
 256                 {
 257                         char * link_name;
 258                         unsigned int i;
 259                         xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 260                         for(i=xbt_dynar_length(route->generic_route.link_list) ;i>0 ;i--)
 261                         {
 262                                 link_name = xbt_dynar_get_as(route->generic_route.link_list,i-1,void *);
 263                                 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 264                                 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 265                                 xbt_dynar_push(link_route_to_test,&link);
 266                         }
 267                         xbt_assert(!xbt_dynar_compare(
 268                                   (void*)TO_ROUTE_FULL(*dst_id, *src_id)->generic_route.link_list,
 269                               (void*)link_route_to_test,
 270                                   (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 271                                   "The route between \"%s\" and \"%s\" already exists", src,dst);
 272                 }
 273                 else
 274                 {
 275                           if(!route->dst_gateway && !route->src_gateway)
 276                                   XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 277                           else
 278                                   XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
 279                                          route->src_gateway, src, route->dst_gateway);
 280                       TO_ROUTE_FULL(*dst_id, *src_id) = generic_new_extended_route(rc->hierarchy,route,0);
 281                       xbt_dynar_shrink(TO_ROUTE_FULL(*dst_id, *src_id)->generic_route.link_list, 0);
 282                 }
 283         }
 284
 285         if (rc->hierarchy == SURF_ROUTING_BASE) generic_free_route((route_t)route) ;
 286         else generic_free_extended_route((route_extended_t)route);
 287 }