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