1 /* Copyright (c) 2013-2016. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "src/surf/AsVivaldi.hpp"
7 #include "src/surf/network_interface.hpp"
9 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
11 #define HOST_PEER(peername) bprintf("peer_%s", peername)
12 #define ROUTER_PEER(peername) bprintf("router_%s", peername)
13 #define LINK_PEER(peername) bprintf("link_%s", peername)
15 static inline double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
16 double src_coord, dst_coord;
18 src_coord = xbt_dynar_get_as(src, index, double);
19 dst_coord = xbt_dynar_get_as(dst, index, double);
21 return (src_coord-dst_coord)*(src_coord-dst_coord);
26 AsVivaldi::AsVivaldi(const char *name)
30 void AsVivaldi::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat)
32 s_surf_parsing_link_up_down_t info;
34 XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",
35 src->name(), src->id(), dst->name(), dst->id());
38 char *src_name = ROUTER_PEER(src->name());
39 char *dst_name = ROUTER_PEER(dst->name());
40 route->gw_src = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, src_name, ROUTING_ASR_LEVEL);
41 route->gw_dst = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, dst_name, ROUTING_ASR_LEVEL);
46 double euclidean_dist;
47 xbt_dynar_t src_ctn, dst_ctn;
48 char *tmp_src_name, *tmp_dst_name;
51 tmp_src_name = HOST_PEER(src->name());
53 if ((int)xbt_dynar_length(upDownLinks)>src->id()) {
54 info = xbt_dynar_get_as(upDownLinks, src->id(), s_surf_parsing_link_up_down_t);
55 if(info.link_up) { // link up
56 route->link_list->push_back(info.link_up);
58 *lat += static_cast<Link*>(info.link_up)->getLatency();
61 src_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(tmp_src_name)->extension(COORD_HOST_LEVEL);
62 if (src_ctn == nullptr)
63 src_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(src->name())->extension(COORD_HOST_LEVEL);
65 else if(src->isRouter() || src->isAS()){
66 tmp_src_name = ROUTER_PEER(src->name());
67 src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
74 tmp_dst_name = HOST_PEER(dst->name());
76 if ((int)xbt_dynar_length(upDownLinks)>dst->id()) {
77 info = xbt_dynar_get_as(upDownLinks, dst->id(), s_surf_parsing_link_up_down_t);
78 if(info.link_down) { // link down
79 route->link_list->push_back(info.link_down);
81 *lat += static_cast<Link*>(info.link_down)->getLatency();
84 dst_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(tmp_dst_name)
85 ->extension(COORD_HOST_LEVEL);
86 if (dst_ctn == nullptr)
87 dst_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(dst->name())
88 ->extension(COORD_HOST_LEVEL);
90 else if(dst->isRouter() || dst->isAS()){
91 tmp_dst_name = ROUTER_PEER(dst->name());
92 dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
98 xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
99 xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
103 euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
104 + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
107 XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
108 *lat += euclidean_dist / 1000.0; //From .ms to .s