src/instr/instr_platform.cpp

   1 /* Copyright (c) 2010-2019. The SimGrid Team. All rights reserved.          */
   2
   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. */
   5
   6 #include "src/instr/instr_private.hpp"
   7
   8 #include "simgrid/kernel/routing/NetPoint.hpp"
   9 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
  10 #include "simgrid/s4u/Actor.hpp"
  11 #include "simgrid/s4u/Comm.hpp"
  12 #include "simgrid/s4u/Engine.hpp"
  13 #include "simgrid/s4u/Exec.hpp"
  14 #include "simgrid/s4u/Host.hpp"
  15 #include "simgrid/s4u/VirtualMachine.hpp"
  16 #include "src/surf/cpu_interface.hpp"
  17 #include "src/surf/network_interface.hpp"
  18 #include "src/surf/surf_interface.hpp"
  19 #include "src/surf/xml/platf_private.hpp"
  20 #include "surf/surf.hpp"
  21 #include "xbt/graph.h"
  22
  23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(instr_routing, instr, "Tracing platform hierarchy");
  24
  25 static std::vector<simgrid::instr::NetZoneContainer*> currentContainer; /* push and pop, used only in creation */
  26
  27 static const char* instr_node_name(xbt_node_t node)
  28 {
  29   return static_cast<char*>(xbt_graph_node_get_data(node));
  30 }
  31
  32 static container_t lowestCommonAncestor(container_t a1, container_t a2)
  33 {
  34   // this is only an optimization (since most of a1 and a2 share the same parent)
  35   if (a1->father_ == a2->father_)
  36     return a1->father_;
  37
  38   // create an array with all ancestors of a1
  39   std::vector<container_t> ancestors_a1;
  40   container_t p = a1->father_;
  41   while (p) {
  42     ancestors_a1.push_back(p);
  43     p = p->father_;
  44   }
  45
  46   // create an array with all ancestors of a2
  47   std::vector<container_t> ancestors_a2;
  48   p = a2->father_;
  49   while (p) {
  50     ancestors_a2.push_back(p);
  51     p = p->father_;
  52   }
  53
  54   // find the lowest ancestor
  55   p     = nullptr;
  56   int i = ancestors_a1.size() - 1;
  57   int j = ancestors_a2.size() - 1;
  58   while (i >= 0 && j >= 0) {
  59     container_t a1p = ancestors_a1.at(i);
  60     container_t a2p = ancestors_a2.at(j);
  61     if (a1p == a2p) {
  62       p = a1p;
  63     } else {
  64       break;
  65     }
  66     i--;
  67     j--;
  68   }
  69   return p;
  70 }
  71
  72 static void linkContainers(container_t src, container_t dst, std::set<std::string>* filter)
  73 {
  74   // ignore loopback
  75   if (src->get_name() == "__loopback__" || dst->get_name() == "__loopback__") {
  76     XBT_DEBUG("  linkContainers: ignoring loopback link");
  77     return;
  78   }
  79
  80   // find common father
  81   container_t father = lowestCommonAncestor(src, dst);
  82   if (not father) {
  83     xbt_die("common father unknown, this is a tracing problem");
  84   }
  85
  86   // check if we already register this pair (we only need one direction)
  87   std::string aux1 = src->get_name() + dst->get_name();
  88   std::string aux2 = dst->get_name() + src->get_name();
  89   if (filter->find(aux1) != filter->end()) {
  90     XBT_DEBUG("  linkContainers: already registered %s <-> %s (1)", src->get_cname(), dst->get_cname());
  91     return;
  92   }
  93   if (filter->find(aux2) != filter->end()) {
  94     XBT_DEBUG("  linkContainers: already registered %s <-> %s (2)", dst->get_cname(), src->get_cname());
  95     return;
  96   }
  97
  98   // ok, not found, register it
  99   filter->insert(aux1);
 100   filter->insert(aux2);
 101
 102   // declare type
 103   std::string link_typename = father->type_->get_name() + "-" + src->type_->get_name() +
 104                               std::to_string(src->type_->get_id()) + "-" + dst->type_->get_name() +
 105                               std::to_string(dst->type_->get_id());
 106   simgrid::instr::LinkType* link = father->type_->by_name_or_create(link_typename, src->type_, dst->type_);
 107   link->set_calling_container(father);
 108
 109   // register EDGE types for triva configuration
 110   trivaEdgeTypes.insert(link->get_name());
 111
 112   // create the link
 113   static long long counter = 0;
 114
 115   std::string key = std::to_string(counter);
 116   counter++;
 117
 118   link->start_event(src, "topology", key);
 119   link->end_event(dst, "topology", key);
 120
 121   XBT_DEBUG("  linkContainers %s <-> %s", src->get_cname(), dst->get_cname());
 122 }
 123
 124 static void recursiveGraphExtraction(simgrid::s4u::NetZone* netzone, container_t container,
 125                                      std::set<std::string>* filter)
 126 {
 127   if (not TRACE_platform_topology()) {
 128     XBT_DEBUG("Graph extraction disabled by user.");
 129     return;
 130   }
 131   XBT_DEBUG("Graph extraction for NetZone = %s", netzone->get_cname());
 132   if (not netzone->get_children().empty()) {
 133     // bottom-up recursion
 134     for (auto const& nz_son : netzone->get_children()) {
 135       container_t child_container = container->children_.at(nz_son->get_name());
 136       recursiveGraphExtraction(nz_son, child_container, filter);
 137     }
 138   }
 139
 140   xbt_graph_t graph                        = xbt_graph_new_graph(0, nullptr);
 141   std::map<std::string, xbt_node_t>* nodes = new std::map<std::string, xbt_node_t>;
 142   std::map<std::string, xbt_edge_t>* edges = new std::map<std::string, xbt_edge_t>;
 143
 144   netzone->get_impl()->get_graph(graph, nodes, edges);
 145   for (auto elm : *edges) {
 146     xbt_edge_t edge = elm.second;
 147     linkContainers(simgrid::instr::Container::by_name(static_cast<const char*>(edge->src->data)),
 148                    simgrid::instr::Container::by_name(static_cast<const char*>(edge->dst->data)), filter);
 149   }
 150   delete nodes;
 151   delete edges;
 152   xbt_graph_free_graph(graph, xbt_free_f, xbt_free_f, nullptr);
 153 }
 154
 155 /*
 156  * Callbacks
 157  */
 158 static void instr_netzone_on_creation(simgrid::s4u::NetZone const& netzone)
 159 {
 160   std::string id = netzone.get_name();
 161   if (simgrid::instr::Container::get_root() == nullptr) {
 162     simgrid::instr::NetZoneContainer* root = new simgrid::instr::NetZoneContainer(id, 0, nullptr);
 163     xbt_assert(simgrid::instr::Container::get_root() == root);
 164
 165     if (TRACE_smpi_is_enabled()) {
 166       simgrid::instr::ContainerType* mpi = root->type_->by_name_or_create<simgrid::instr::ContainerType>("MPI");
 167       if (not TRACE_smpi_is_grouped())
 168         mpi->by_name_or_create<simgrid::instr::StateType>("MPI_STATE");
 169       root->type_->by_name_or_create("MPI_LINK", mpi, mpi);
 170       // TODO See if we can move this to the LoadBalancer plugin
 171       root->type_->by_name_or_create("MIGRATE_LINK", mpi, mpi);
 172       mpi->by_name_or_create<simgrid::instr::StateType>("MIGRATE_STATE");
 173     }
 174
 175     if (TRACE_needs_platform()) {
 176       currentContainer.push_back(root);
 177     }
 178     return;
 179   }
 180
 181   if (TRACE_needs_platform()) {
 182     simgrid::instr::NetZoneContainer* container =
 183         new simgrid::instr::NetZoneContainer(id, currentContainer.size(), currentContainer.back());
 184     currentContainer.push_back(container);
 185   }
 186 }
 187
 188 static void instr_link_on_creation(simgrid::s4u::Link const& link)
 189 {
 190   if (currentContainer.empty()) // No ongoing parsing. Are you creating the loopback?
 191     return;
 192
 193   container_t container = new simgrid::instr::Container(link.get_name(), "LINK", currentContainer.back());
 194
 195   if ((TRACE_categorized() || TRACE_uncategorized() || TRACE_platform()) && (not TRACE_disable_link())) {
 196     simgrid::instr::VariableType* bandwidth = container->type_->by_name_or_create("bandwidth", "");
 197     bandwidth->set_calling_container(container);
 198     bandwidth->set_event(0, link.get_bandwidth());
 199     simgrid::instr::VariableType* latency = container->type_->by_name_or_create("latency", "");
 200     latency->set_calling_container(container);
 201     latency->set_event(0, link.get_latency());
 202   }
 203   if (TRACE_uncategorized()) {
 204     container->type_->by_name_or_create("bandwidth_used", "0.5 0.5 0.5");
 205   }
 206 }
 207
 208 static void instr_host_on_creation(simgrid::s4u::Host const& host)
 209 {
 210   container_t container = new simgrid::instr::HostContainer(host, currentContainer.back());
 211   container_t root      = simgrid::instr::Container::get_root();
 212
 213   if ((TRACE_categorized() || TRACE_uncategorized() || TRACE_platform()) && (not TRACE_disable_speed())) {
 214     simgrid::instr::VariableType* speed = container->type_->by_name_or_create("speed", "");
 215     speed->set_calling_container(container);
 216     speed->set_event(0, host.get_speed());
 217
 218     simgrid::instr::VariableType* cores = container->type_->by_name_or_create("core_count", "");
 219     cores->set_calling_container(container);
 220     cores->set_event(0, host.get_core_count());
 221   }
 222
 223   if (TRACE_uncategorized())
 224     container->type_->by_name_or_create("speed_used", "0.5 0.5 0.5");
 225
 226   if (TRACE_smpi_is_enabled() && TRACE_smpi_is_grouped()) {
 227     simgrid::instr::ContainerType* mpi = container->type_->by_name_or_create<simgrid::instr::ContainerType>("MPI");
 228     mpi->by_name_or_create<simgrid::instr::StateType>("MPI_STATE");
 229     // TODO See if we can move this to the LoadBalancer plugin
 230     root->type_->by_name_or_create("MIGRATE_LINK", mpi, mpi);
 231     mpi->by_name_or_create<simgrid::instr::StateType>("MIGRATE_STATE");
 232   }
 233 }
 234
 235 static void instr_host_on_speed_change(simgrid::s4u::Host const& host)
 236 {
 237   simgrid::instr::Container::by_name(host.get_name())
 238       ->get_variable("speed")
 239       ->set_event(surf_get_clock(), host.get_core_count() * host.get_available_speed());
 240 }
 241
 242 static void instr_action_on_state_change(simgrid::kernel::resource::Action const& action,
 243                                          simgrid::kernel::resource::Action::State /* previous */)
 244 {
 245   int n = action.get_variable()->get_number_of_constraint();
 246
 247   for (int i = 0; i < n; i++) {
 248     double value = action.get_variable()->get_value() * action.get_variable()->get_constraint_weight(i);
 249     /* Beware of composite actions: ptasks put links and cpus together. Extra pb: we cannot dynamic_cast from void* */
 250     simgrid::kernel::resource::Resource* resource = action.get_variable()->get_constraint(i)->get_id();
 251     simgrid::kernel::resource::Cpu* cpu = dynamic_cast<simgrid::kernel::resource::Cpu*>(resource);
 252
 253     if (cpu != nullptr)
 254       TRACE_surf_resource_set_utilization("HOST", "speed_used", cpu->get_cname(), action.get_category(), value,
 255                                           action.get_last_update(), SIMIX_get_clock() - action.get_last_update());
 256
 257     simgrid::kernel::resource::LinkImpl* link = dynamic_cast<simgrid::kernel::resource::LinkImpl*>(resource);
 258
 259     if (link != nullptr)
 260       TRACE_surf_resource_set_utilization("LINK", "bandwidth_used", link->get_cname(), action.get_category(), value,
 261                                           action.get_last_update(), SIMIX_get_clock() - action.get_last_update());
 262   }
 263 }
 264
 265 static void instr_link_on_bandwidth_change(simgrid::s4u::Link const& link)
 266 {
 267   simgrid::instr::Container::by_name(link.get_name())
 268       ->get_variable("bandwidth")
 269       ->set_event(surf_get_clock(), sg_bandwidth_factor * link.get_bandwidth());
 270 }
 271
 272 static void instr_netpoint_on_creation(simgrid::kernel::routing::NetPoint const& netpoint)
 273 {
 274   if (netpoint.is_router())
 275     new simgrid::instr::RouterContainer(netpoint.get_name(), currentContainer.back());
 276 }
 277
 278 static void instr_on_platform_created()
 279 {
 280   currentContainer.clear();
 281   std::set<std::string>* filter = new std::set<std::string>;
 282   XBT_DEBUG("Starting graph extraction.");
 283   recursiveGraphExtraction(simgrid::s4u::Engine::get_instance()->get_netzone_root(),
 284                            simgrid::instr::Container::get_root(), filter);
 285   XBT_DEBUG("Graph extraction finished.");
 286   delete filter;
 287   TRACE_paje_dump_buffer(true);
 288 }
 289
 290 static void instr_actor_on_creation(simgrid::s4u::Actor const& actor)
 291 {
 292   container_t root      = simgrid::instr::Container::get_root();
 293   container_t container = simgrid::instr::Container::by_name(actor.get_host()->get_name());
 294
 295   container->create_child(instr_pid(actor), "ACTOR");
 296   simgrid::instr::ContainerType* actor_type =
 297       container->type_->by_name_or_create<simgrid::instr::ContainerType>("ACTOR");
 298   simgrid::instr::StateType* state = actor_type->by_name_or_create<simgrid::instr::StateType>("ACTOR_STATE");
 299   state->add_entity_value("suspend", "1 0 1");
 300   state->add_entity_value("sleep", "1 1 0");
 301   state->add_entity_value("receive", "1 0 0");
 302   state->add_entity_value("send", "0 0 1");
 303   state->add_entity_value("execute", "0 1 1");
 304   root->type_->by_name_or_create("ACTOR_LINK", actor_type, actor_type);
 305   root->type_->by_name_or_create("ACTOR_TASK_LINK", actor_type, actor_type);
 306
 307   std::string container_name = instr_pid(actor);
 308   actor.on_exit([container_name](bool failed) {
 309     if (failed)
 310       // kill means that this actor no longer exists, let's destroy it
 311       simgrid::instr::Container::by_name(container_name)->remove_from_parent();
 312   });
 313 }
 314
 315 static void instr_actor_on_host_change(simgrid::s4u::Actor const& actor,
 316                                        simgrid::s4u::Host const& /*previous_location*/)
 317 {
 318   static long long int counter = 0;
 319   container_t container = simgrid::instr::Container::by_name(instr_pid(actor));
 320   simgrid::instr::LinkType* link = simgrid::instr::Container::get_root()->get_link("ACTOR_LINK");
 321
 322   // start link
 323   link->start_event(container, "M", std::to_string(counter));
 324   // destroy existing container of this process
 325   container->remove_from_parent();
 326   // create new container on the new_host location
 327   simgrid::instr::Container::by_name(actor.get_host()->get_name())->create_child(instr_pid(actor), "ACTOR");
 328   // end link
 329   link->end_event(container, "M", std::to_string(counter));
 330   counter++;
 331 }
 332
 333 static void instr_vm_on_creation(simgrid::s4u::Host const& host)
 334 {
 335   container_t container             = new simgrid::instr::HostContainer(host, currentContainer.back());
 336   container_t root                  = simgrid::instr::Container::get_root();
 337   simgrid::instr::ContainerType* vm = container->type_->by_name_or_create<simgrid::instr::ContainerType>("VM");
 338   simgrid::instr::StateType* state  = vm->by_name_or_create<simgrid::instr::StateType>("VM_STATE");
 339   state->add_entity_value("suspend", "1 0 1");
 340   state->add_entity_value("sleep", "1 1 0");
 341   state->add_entity_value("receive", "1 0 0");
 342   state->add_entity_value("send", "0 0 1");
 343   state->add_entity_value("execute", "0 1 1");
 344   root->type_->by_name_or_create("VM_LINK", vm, vm);
 345   root->type_->by_name_or_create("VM_ACTOR_LINK", vm, vm);
 346 }
 347
 348 void instr_define_callbacks()
 349 {
 350   // always need the callbacks to zones (we need only the root zone), to create the rootContainer and the rootType
 351   // properly
 352   if (TRACE_needs_platform()) {
 353     simgrid::s4u::Engine::on_platform_created.connect(instr_on_platform_created);
 354     simgrid::s4u::Host::on_creation.connect(instr_host_on_creation);
 355     simgrid::s4u::Host::on_speed_change.connect(instr_host_on_speed_change);
 356     simgrid::s4u::Link::on_creation.connect(instr_link_on_creation);
 357     simgrid::s4u::Link::on_bandwidth_change.connect(instr_link_on_bandwidth_change);
 358     simgrid::s4u::NetZone::on_seal.connect(
 359         [](simgrid::s4u::NetZone const& /*netzone*/) { currentContainer.pop_back(); });
 360     simgrid::kernel::routing::NetPoint::on_creation.connect(instr_netpoint_on_creation);
 361   }
 362   simgrid::s4u::NetZone::on_creation.connect(instr_netzone_on_creation);
 363
 364   simgrid::kernel::resource::CpuAction::on_state_change.connect(instr_action_on_state_change);
 365   simgrid::s4u::Link::on_communication_state_change.connect(instr_action_on_state_change);
 366
 367   if (TRACE_actor_is_enabled()) {
 368     simgrid::s4u::Actor::on_creation.connect(instr_actor_on_creation);
 369     simgrid::s4u::Actor::on_destruction.connect([](simgrid::s4u::Actor const& actor) {
 370       auto container = simgrid::instr::Container::by_name_or_null(instr_pid(actor));
 371       if (container != nullptr)
 372         container->remove_from_parent();
 373     });
 374     simgrid::s4u::Actor::on_suspend.connect([](simgrid::s4u::Actor const& actor) {
 375       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->push_event("suspend");
 376     });
 377     simgrid::s4u::Actor::on_resume.connect([](simgrid::s4u::Actor const& actor) {
 378       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->pop_event();
 379     });
 380     simgrid::s4u::Actor::on_sleep.connect([](simgrid::s4u::Actor const& actor) {
 381       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->push_event("sleep");
 382     });
 383     simgrid::s4u::Actor::on_wake_up.connect([](simgrid::s4u::Actor const& actor) {
 384       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->pop_event();
 385     });
 386     simgrid::s4u::Exec::on_start.connect([](simgrid::s4u::Actor const& actor, simgrid::s4u::Exec const&) {
 387       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->push_event("execute");
 388     });
 389     simgrid::s4u::Exec::on_completion.connect([](simgrid::s4u::Actor const& actor, simgrid::s4u::Exec const&) {
 390       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->pop_event();
 391     });
 392     simgrid::s4u::Comm::on_sender_start.connect([](simgrid::s4u::Actor const& actor) {
 393       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->push_event("send");
 394     });
 395     simgrid::s4u::Comm::on_receiver_start.connect([](simgrid::s4u::Actor const& actor) {
 396       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->push_event("receive");
 397     });
 398     simgrid::s4u::Comm::on_completion.connect([](simgrid::s4u::Actor const& actor) {
 399       simgrid::instr::Container::by_name(instr_pid(actor))->get_state("ACTOR_STATE")->pop_event();
 400     });
 401     simgrid::s4u::Actor::on_host_change.connect(instr_actor_on_host_change);
 402   }
 403
 404   if (TRACE_vm_is_enabled()) {
 405     simgrid::s4u::Host::on_creation.connect(instr_vm_on_creation);
 406     simgrid::s4u::VirtualMachine::on_start.connect([](simgrid::s4u::VirtualMachine const& vm) {
 407       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->push_event("start");
 408     });
 409     simgrid::s4u::VirtualMachine::on_started.connect([](simgrid::s4u::VirtualMachine const& vm) {
 410       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->pop_event();
 411     });
 412     simgrid::s4u::VirtualMachine::on_suspend.connect([](simgrid::s4u::VirtualMachine const& vm) {
 413       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->push_event("suspend");
 414     });
 415     simgrid::s4u::VirtualMachine::on_resume.connect([](simgrid::s4u::VirtualMachine const& vm) {
 416       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->pop_event();
 417     });
 418     simgrid::s4u::Host::on_destruction.connect([](simgrid::s4u::Host const& host) {
 419       simgrid::instr::Container::by_name(host.get_name())->remove_from_parent();
 420     });
 421   }
 422 }
 423 /*
 424  * user categories support
 425  */
 426 static void recursiveNewVariableType(const std::string& new_typename, const std::string& color,
 427                                      simgrid::instr::Type* root)
 428 {
 429   if (root->get_name() == "HOST" || root->get_name() == "VM")
 430     root->by_name_or_create(std::string("p") + new_typename, color);
 431
 432   if (root->get_name() == "LINK")
 433     root->by_name_or_create(std::string("b") + new_typename, color);
 434
 435   for (auto const& elm : root->children_) {
 436     recursiveNewVariableType(new_typename, color, elm.second.get());
 437   }
 438 }
 439
 440 void instr_new_variable_type(const std::string& new_typename, const std::string& color)
 441 {
 442   recursiveNewVariableType(new_typename, color, simgrid::instr::Container::get_root()->type_);
 443 }
 444
 445 static void recursiveNewUserVariableType(const std::string& father_type, const std::string& new_typename,
 446                                          const std::string& color, simgrid::instr::Type* root)
 447 {
 448   if (root->get_name() == father_type) {
 449     root->by_name_or_create(new_typename, color);
 450   }
 451   for (auto const& elm : root->children_)
 452     recursiveNewUserVariableType(father_type, new_typename, color, elm.second.get());
 453 }
 454
 455 void instr_new_user_variable_type(const std::string& father_type, const std::string& new_typename,
 456                                   const std::string& color)
 457 {
 458   recursiveNewUserVariableType(father_type, new_typename, color, simgrid::instr::Container::get_root()->type_);
 459 }
 460
 461 static void recursiveNewUserStateType(const std::string& father_type, const std::string& new_typename,
 462                                       simgrid::instr::Type* root)
 463 {
 464   if (root->get_name() == father_type)
 465     root->by_name_or_create<simgrid::instr::StateType>(new_typename);
 466
 467   for (auto const& elm : root->children_)
 468     recursiveNewUserStateType(father_type, new_typename, elm.second.get());
 469 }
 470
 471 void instr_new_user_state_type(const std::string& father_type, const std::string& new_typename)
 472 {
 473   recursiveNewUserStateType(father_type, new_typename, simgrid::instr::Container::get_root()->type_);
 474 }
 475
 476 static void recursiveNewValueForUserStateType(const std::string& type_name, const char* val, const std::string& color,
 477                                               simgrid::instr::Type* root)
 478 {
 479   if (root->get_name() == type_name)
 480     static_cast<simgrid::instr::StateType*>(root)->add_entity_value(val, color);
 481
 482   for (auto const& elm : root->children_)
 483     recursiveNewValueForUserStateType(type_name, val, color, elm.second.get());
 484 }
 485
 486 void instr_new_value_for_user_state_type(const std::string& type_name, const char* value, const std::string& color)
 487 {
 488   recursiveNewValueForUserStateType(type_name, value, color, simgrid::instr::Container::get_root()->type_);
 489 }
 490
 491 #define GRAPHICATOR_SUPPORT_FUNCTIONS
 492
 493 static void recursiveXBTGraphExtraction(xbt_graph_t graph, std::map<std::string, xbt_node_t>* nodes,
 494                                         std::map<std::string, xbt_edge_t>* edges, sg_netzone_t netzone,
 495                                         container_t container)
 496 {
 497   if (not netzone->get_children().empty()) {
 498     // bottom-up recursion
 499     for (auto const& netzone_child : netzone->get_children()) {
 500       container_t child_container = container->children_.at(netzone_child->get_name());
 501       recursiveXBTGraphExtraction(graph, nodes, edges, netzone_child, child_container);
 502     }
 503   }
 504
 505   netzone->get_impl()->get_graph(graph, nodes, edges);
 506 }
 507
 508 xbt_graph_t instr_routing_platform_graph()
 509 {
 510   xbt_graph_t ret                          = xbt_graph_new_graph(0, nullptr);
 511   std::map<std::string, xbt_node_t>* nodes = new std::map<std::string, xbt_node_t>;
 512   std::map<std::string, xbt_edge_t>* edges = new std::map<std::string, xbt_edge_t>;
 513   recursiveXBTGraphExtraction(ret, nodes, edges, simgrid::s4u::Engine::get_instance()->get_netzone_root(),
 514                               simgrid::instr::Container::get_root());
 515   delete nodes;
 516   delete edges;
 517   return ret;
 518 }
 519
 520 void instr_routing_platform_graph_export_graphviz(xbt_graph_t g, const char* filename)
 521 {
 522   unsigned int cursor = 0;
 523   xbt_node_t node     = nullptr;
 524   xbt_edge_t edge     = nullptr;
 525
 526   FILE* file = fopen(filename, "w");
 527   xbt_assert(file, "Failed to open %s \n", filename);
 528
 529   if (g->directed)
 530     fprintf(file, "digraph test {\n");
 531   else
 532     fprintf(file, "graph test {\n");
 533
 534   fprintf(file, "  graph [overlap=scale]\n");
 535
 536   fprintf(file, "  node [shape=box, style=filled]\n");
 537   fprintf(file, "  node [width=.3, height=.3, style=filled, color=skyblue]\n\n");
 538
 539   xbt_dynar_foreach (g->nodes, cursor, node) {
 540     fprintf(file, "  \"%s\";\n", instr_node_name(node));
 541   }
 542   xbt_dynar_foreach (g->edges, cursor, edge) {
 543     const char* src_s = instr_node_name(edge->src);
 544     const char* dst_s = instr_node_name(edge->dst);
 545     if (g->directed)
 546       fprintf(file, "  \"%s\" -> \"%s\";\n", src_s, dst_s);
 547     else
 548       fprintf(file, "  \"%s\" -- \"%s\";\n", src_s, dst_s);
 549   }
 550   fprintf(file, "}\n");
 551   fclose(file);
 552 }