src/surf/surf_routing_cluster.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 #include "surf_routing_private.h"
   7
   8 /* Global vars */
   9 extern routing_global_t global_routing;
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster, surf, "Routing part of surf");
  12
  13 /* This routing is specifically setup to represent clusters, aka homogeneous sets of machines
  14  * Note that a router is created, easing the interconnexion with the rest of the world.
  15  */
  16
  17 typedef struct {
  18   s_as_t generic_routing;
  19   void *backbone;
  20 } s_as_cluster_t, *as_cluster_t;
  21
  22
  23 static xbt_dict_t cluster_host_link = NULL;
  24
  25 /* Business methods */
  26 static void cluster_get_route_and_latency(AS_t as,
  27                                           const char *src, const char *dst,
  28                                           route_t route, double *lat) {
  29
  30           surf_parsing_link_up_down_t info;
  31
  32           info = xbt_dict_get_or_null(cluster_host_link,src);
  33           if(info) { // link up
  34             xbt_dynar_push_as(route->link_list,void*,info->link_up);
  35       if (lat)
  36         *lat += surf_network_model->extension.network.get_link_latency(info->link_up);
  37           }
  38
  39           if ( ((as_cluster_t)as)->backbone ) {
  40             xbt_dynar_push_as(route->link_list,void*, ((as_cluster_t)as)->backbone) ;
  41       if (lat)
  42         *lat += surf_network_model->extension.network.get_link_latency(((as_cluster_t)as)->backbone);
  43           }
  44
  45           info = xbt_dict_get_or_null(cluster_host_link,dst);
  46           if(info) { // link down
  47             xbt_dynar_push_as(route->link_list,void*,info->link_down);
  48       if (lat)
  49         *lat += surf_network_model->extension.network.get_link_latency(info->link_down);
  50           }
  51 }
  52
  53 static void model_cluster_finalize(AS_t as) {
  54   xbt_dict_free(&cluster_host_link);
  55   model_none_finalize(as);
  56 }
  57 /* Creation routing model functions */
  58 AS_t model_cluster_create(void)
  59 {
  60   AS_t result = model_none_create_sized(sizeof(s_as_cluster_t));
  61   result->get_route_and_latency = cluster_get_route_and_latency;
  62   result->finalize = model_cluster_finalize;
  63
  64   return (AS_t) result;
  65 }
  66
  67 void surf_routing_cluster_add_link(const char* host_id,surf_parsing_link_up_down_t info) {
  68   if(!cluster_host_link)
  69     cluster_host_link = xbt_dict_new();
  70
  71  xbt_dict_set(cluster_host_link,host_id,info,xbt_free);
  72 }
  73
  74 void surf_routing_cluster_add_backbone(AS_t as, void* bb) {
  75   ((as_cluster_t)as)->backbone = bb;
  76 }