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