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_and_latency(AS_t rc,
  65                            const char *src, const char *dst,
  66                            route_t res,double *lat)
  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       if (lat)
  91         *lat += surf_network_model->extension.network.get_link_latency(link);
  92     }
  93   }
  94 }
  95
  96 static void full_finalize(AS_t rc)
  97 {
  98   routing_component_full_t routing = (routing_component_full_t) rc;
  99   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 100   int i, j;
 101   if (routing) {
 102     /* Delete routing table */
 103     for (i = 0; i < table_size; i++)
 104       for (j = 0; j < table_size; j++)
 105         generic_free_route(TO_ROUTE_FULL(i, j));
 106     xbt_free(routing->routing_table);
 107     model_generic_finalize(rc);
 108   }
 109 }
 110
 111 /* Creation routing model functions */
 112
 113 AS_t model_full_create(void)
 114 {
 115   routing_component_full_t new_component = (routing_component_full_t)
 116       model_generic_create_sized(sizeof(s_routing_component_full_t));
 117
 118   new_component->generic_routing.parse_route = model_full_set_route;
 119   new_component->generic_routing.parse_ASroute = model_full_set_route;
 120   new_component->generic_routing.get_route_and_latency = full_get_route_and_latency;
 121   new_component->generic_routing.get_onelink_routes =
 122       full_get_onelink_routes;
 123   new_component->generic_routing.finalize = full_finalize;
 124
 125   return (AS_t) new_component;
 126 }
 127
 128 void model_full_end(AS_t current_routing)
 129 {
 130   unsigned int i;
 131   route_t e_route;
 132
 133   /* set utils vars */
 134   routing_component_full_t routing =
 135       ((routing_component_full_t) current_routing);
 136   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 137
 138   /* Create table if necessary */
 139   if(!routing->routing_table)
 140           routing->routing_table = xbt_new0(route_t, table_size * table_size);
 141
 142   /* Add the loopback if needed */
 143   if (current_routing->hierarchy == SURF_ROUTING_BASE) {
 144     for (i = 0; i < table_size; i++) {
 145       e_route = TO_ROUTE_FULL(i, i);
 146       if (!e_route) {
 147         e_route = xbt_new0(s_route_t, 1);
 148         e_route->src_gateway = NULL;
 149         e_route->dst_gateway = NULL;
 150         e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 151         xbt_dynar_push(e_route->link_list,
 152                        &global_routing->loopback);
 153         TO_ROUTE_FULL(i, i) = e_route;
 154       }
 155     }
 156   }
 157 }
 158
 159 static int surf_pointer_resource_cmp(const void *a, const void *b) {
 160   return a != b;
 161 }
 162
 163 void model_full_set_route(AS_t rc, const char *src,
 164                 const char *dst, route_t route)
 165 {
 166         int *src_id, *dst_id;
 167         src_id = xbt_dict_get_or_null(rc->to_index, src);
 168         dst_id = xbt_dict_get_or_null(rc->to_index, dst);
 169         routing_component_full_t routing = ((routing_component_full_t) rc);
 170         size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 171
 172         xbt_assert(src_id, "Network elements %s not found", src);
 173         xbt_assert(dst_id, "Network elements %s not found", dst);
 174
 175         xbt_assert(!xbt_dynar_is_empty(route->link_list),
 176                           "Invalid count of links, must be greater than zero (%s,%s)",
 177                           src, dst);
 178
 179         if(!routing->routing_table)
 180                 routing->routing_table = xbt_new0(route_t, table_size * table_size);
 181
 182         if(TO_ROUTE_FULL(*src_id, *dst_id))
 183         {
 184                 char * link_name;
 185                 unsigned int i;
 186                 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 187                 xbt_dynar_foreach(route->link_list,i,link_name)
 188                 {
 189                         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 190                         xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 191                         xbt_dynar_push(link_route_to_test,&link);
 192                 }
 193                 xbt_assert(!xbt_dynar_compare(
 194                           (void*)TO_ROUTE_FULL(*src_id, *dst_id)->link_list,
 195                           (void*)link_route_to_test,
 196                           (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 197                           "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);
 198         }
 199         else
 200         {
 201                   if(!route->dst_gateway && !route->src_gateway)
 202                           XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 203                   else{
 204                           XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
 205                                  route->src_gateway, dst, route->dst_gateway);
 206                           if(routing_get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
 207                                   xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
 208                           if(routing_get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
 209                                   xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
 210                   }
 211               TO_ROUTE_FULL(*src_id, *dst_id) = generic_new_extended_route(rc->hierarchy,route,1);
 212               xbt_dynar_shrink(TO_ROUTE_FULL(*src_id, *dst_id)->link_list, 0);
 213         }
 214
 215         if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 216                 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
 217         {
 218                 if(route->dst_gateway && route->src_gateway)
 219                 {
 220                   char *gw_tmp ;
 221                   gw_tmp = route->src_gateway;
 222                   route->src_gateway = route->dst_gateway;
 223                   route->dst_gateway = gw_tmp;
 224                 }
 225                 if(TO_ROUTE_FULL(*dst_id, *src_id))
 226                 {
 227                         char * link_name;
 228                         unsigned int i;
 229                         xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
 230                         for(i=xbt_dynar_length(route->link_list) ;i>0 ;i--)
 231                         {
 232                                 link_name = xbt_dynar_get_as(route->link_list,i-1,void *);
 233                                 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 234                                 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
 235                                 xbt_dynar_push(link_route_to_test,&link);
 236                         }
 237                         xbt_assert(!xbt_dynar_compare(
 238                                   (void*)TO_ROUTE_FULL(*dst_id, *src_id)->link_list,
 239                               (void*)link_route_to_test,
 240                                   (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
 241                                   "The route between \"%s\" and \"%s\" already exists", src,dst);
 242                 }
 243                 else
 244                 {
 245                           if(!route->dst_gateway && !route->src_gateway)
 246                                   XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 247                           else
 248                                   XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
 249                                          route->src_gateway, src, route->dst_gateway);
 250                       TO_ROUTE_FULL(*dst_id, *src_id) = generic_new_extended_route(rc->hierarchy,route,0);
 251                       xbt_dynar_shrink(TO_ROUTE_FULL(*dst_id, *src_id)->link_list, 0);
 252                 }
 253         }
 254 }