/* Copyright (c) 2013-2015. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "surf_routing_vivaldi.hpp"
#include "network_interface.hpp"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
#define HOST_PEER(peername) bprintf("peer_%s", peername)
#define ROUTER_PEER(peername) bprintf("router_%s", peername)
#define LINK_PEER(peername) bprintf("link_%s", peername)
static XBT_INLINE double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
double src_coord, dst_coord;
src_coord = xbt_dynar_get_as(src, index, double);
dst_coord = xbt_dynar_get_as(dst, index, double);
return (src_coord-dst_coord)*(src_coord-dst_coord);
}
namespace simgrid {
namespace surf {
AsVivaldi::AsVivaldi(const char *name)
: AsGeneric(name)
{}
void AsVivaldi::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat)
{
s_surf_parsing_link_up_down_t info;
XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",
src->name(), src->id(), dst->name(), dst->id());
if(src->getRcType() == SURF_NETWORK_ELEMENT_AS) {
char *src_name = ROUTER_PEER(src->name());
char *dst_name = ROUTER_PEER(dst->name());
route->gw_src = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, src_name, ROUTING_ASR_LEVEL);
route->gw_dst = (sg_netcard_t) xbt_lib_get_or_null(as_router_lib, dst_name, ROUTING_ASR_LEVEL);
xbt_free(src_name);
xbt_free(dst_name);
}
double euclidean_dist;
xbt_dynar_t src_ctn, dst_ctn;
char *tmp_src_name, *tmp_dst_name;
if(src->getRcType() == SURF_NETWORK_ELEMENT_HOST){
tmp_src_name = HOST_PEER(src->name());
if ((int)xbt_dynar_length(upDownLinks)>src->id()) {
info = xbt_dynar_get_as(upDownLinks, src->id(), s_surf_parsing_link_up_down_t);
if(info.link_up) { // link up
xbt_dynar_push_as(route->link_list, void*, info.link_up);
if (lat)
*lat += static_cast(info.link_up)->getLatency();
}
}
src_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(tmp_src_name)->extension(COORD_HOST_LEVEL);
if (src_ctn == nullptr)
src_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(src->name())->extension(COORD_HOST_LEVEL);
}
else if(src->getRcType() == SURF_NETWORK_ELEMENT_ROUTER || src->getRcType() == SURF_NETWORK_ELEMENT_AS){
tmp_src_name = ROUTER_PEER(src->name());
src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
}
else{
THROW_IMPOSSIBLE;
}
if(dst->getRcType() == SURF_NETWORK_ELEMENT_HOST){
tmp_dst_name = HOST_PEER(dst->name());
if ((int)xbt_dynar_length(upDownLinks)>dst->id()) {
info = xbt_dynar_get_as(upDownLinks, dst->id(), s_surf_parsing_link_up_down_t);
if(info.link_down) { // link down
xbt_dynar_push_as(route->link_list,void*,info.link_down);
if (lat)
*lat += static_cast(info.link_down)->getLatency();
}
}
dst_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(tmp_dst_name)
->extension(COORD_HOST_LEVEL);
if (dst_ctn == nullptr)
dst_ctn = (xbt_dynar_t) simgrid::s4u::Host::by_name_or_create(dst->name())
->extension(COORD_HOST_LEVEL);
}
else if(dst->getRcType() == SURF_NETWORK_ELEMENT_ROUTER || dst->getRcType() == SURF_NETWORK_ELEMENT_AS){
tmp_dst_name = ROUTER_PEER(dst->name());
dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
}
else{
THROW_IMPOSSIBLE;
}
xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
free(tmp_src_name);
free(tmp_dst_name);
euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
+ fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
if (lat){
XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
*lat += euclidean_dist / 1000.0; //From .ms to .s
}
}
}
}