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_cname());
 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& 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& 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& 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& host)
 236 {
 237   simgrid::instr::Container::by_name(host.get_cname())
 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* 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 =
 251         static_cast<simgrid::kernel::resource::Resource*>(action->get_variable()->get_constraint(i)->get_id());
 252     simgrid::surf::Cpu* cpu = dynamic_cast<simgrid::surf::Cpu*>(resource);
 253
 254     if (cpu != nullptr)
 255       TRACE_surf_resource_set_utilization("HOST", "speed_used", cpu->get_cname(), action->get_category(), value,
 256                                           action->get_last_update(), SIMIX_get_clock() - action->get_last_update());
 257
 258     simgrid::kernel::resource::LinkImpl* link = dynamic_cast<simgrid::kernel::resource::LinkImpl*>(resource);
 259
 260     if (link != nullptr)
 261       TRACE_surf_resource_set_utilization("LINK", "bandwidth_used", link->get_cname(), action->get_category(), value,
 262                                           action->get_last_update(), SIMIX_get_clock() - action->get_last_update());
 263   }
 264 }
 265
 266 static void instr_link_on_bandwidth_change(simgrid::s4u::Link& link)
 267 {
 268   simgrid::instr::Container::by_name(link.get_cname())
 269       ->get_variable("bandwidth")
 270       ->set_event(surf_get_clock(), sg_bandwidth_factor * link.get_bandwidth());
 271 }
 272
 273 static void instr_netpoint_on_creation(simgrid::kernel::routing::NetPoint* netpoint)
 274 {
 275   if (netpoint->is_router())
 276     new simgrid::instr::RouterContainer(netpoint->get_cname(), currentContainer.back());
 277 }
 278
 279 static void instr_on_platform_created()
 280 {
 281   currentContainer.clear();
 282   std::set<std::string>* filter = new std::set<std::string>;
 283   XBT_DEBUG("Starting graph extraction.");
 284   recursiveGraphExtraction(simgrid::s4u::Engine::get_instance()->get_netzone_root(),
 285                            simgrid::instr::Container::get_root(), filter);
 286   XBT_DEBUG("Graph extraction finished.");
 287   delete filter;
 288   TRACE_paje_dump_buffer(true);
 289 }
 290
 291 static void instr_actor_on_creation(simgrid::s4u::ActorPtr actor)
 292 {
 293   container_t root      = simgrid::instr::Container::get_root();
 294   container_t container = simgrid::instr::Container::by_name(actor->get_host()->get_name());
 295
 296   container->create_child(instr_pid(actor.get()), "ACTOR");
 297   simgrid::instr::ContainerType* actor_type =
 298       container->type_->by_name_or_create<simgrid::instr::ContainerType>("ACTOR");
 299   simgrid::instr::StateType* state = actor_type->by_name_or_create<simgrid::instr::StateType>("ACTOR_STATE");
 300   state->add_entity_value("suspend", "1 0 1");
 301   state->add_entity_value("sleep", "1 1 0");
 302   state->add_entity_value("receive", "1 0 0");
 303   state->add_entity_value("send", "0 0 1");
 304   state->add_entity_value("execute", "0 1 1");
 305   root->type_->by_name_or_create("ACTOR_LINK", actor_type, actor_type);
 306   root->type_->by_name_or_create("ACTOR_TASK_LINK", actor_type, actor_type);
 307
 308   std::string container_name = instr_pid(actor.get());
 309   actor->on_exit(
 310       [container_name](int status, void*) {
 311         if (status == SMX_EXIT_FAILURE)
 312           // kill means that this actor no longer exists, let's destroy it
 313           simgrid::instr::Container::by_name(container_name)->remove_from_parent();
 314       },
 315       actor->get_impl());
 316 }
 317
 318 static long long int counter = 0;
 319
 320 static void instr_actor_on_migration_start(simgrid::s4u::ActorPtr actor)
 321 {
 322   // start link
 323   container_t container = simgrid::instr::Container::by_name(instr_pid(actor.get()));
 324   simgrid::instr::Container::get_root()->get_link("ACTOR_LINK")->start_event(container, "M", std::to_string(counter));
 325
 326   // destroy existing container of this process
 327   container->remove_from_parent();
 328 }
 329
 330 static void instr_actor_on_migration_end(simgrid::s4u::ActorPtr actor)
 331 {
 332   // create new container on the new_host location
 333   simgrid::instr::Container::by_name(actor->get_host()->get_name())->create_child(instr_pid(actor.get()), "ACTOR");
 334   // end link
 335   simgrid::instr::Container::get_root()
 336       ->get_link("ACTOR_LINK")
 337       ->end_event(simgrid::instr::Container::by_name(instr_pid(actor.get())), "M", std::to_string(counter));
 338   counter++;
 339 }
 340
 341 static void instr_vm_on_creation(simgrid::s4u::Host& host)
 342 {
 343   container_t container             = new simgrid::instr::HostContainer(host, currentContainer.back());
 344   container_t root                  = simgrid::instr::Container::get_root();
 345   simgrid::instr::ContainerType* vm = container->type_->by_name_or_create<simgrid::instr::ContainerType>("VM");
 346   simgrid::instr::StateType* state  = vm->by_name_or_create<simgrid::instr::StateType>("VM_STATE");
 347   state->add_entity_value("suspend", "1 0 1");
 348   state->add_entity_value("sleep", "1 1 0");
 349   state->add_entity_value("receive", "1 0 0");
 350   state->add_entity_value("send", "0 0 1");
 351   state->add_entity_value("execute", "0 1 1");
 352   root->type_->by_name_or_create("VM_LINK", vm, vm);
 353   root->type_->by_name_or_create("VM_ACTOR_LINK", vm, vm);
 354 }
 355
 356 void instr_define_callbacks()
 357 {
 358   // always need the callbacks to zones (we need only the root zone), to create the rootContainer and the rootType
 359   // properly
 360   if (TRACE_needs_platform()) {
 361     simgrid::s4u::on_platform_created.connect(instr_on_platform_created);
 362     simgrid::s4u::Host::on_creation.connect(instr_host_on_creation);
 363     simgrid::s4u::Host::on_speed_change.connect(instr_host_on_speed_change);
 364     simgrid::s4u::Link::on_creation.connect(instr_link_on_creation);
 365     simgrid::s4u::Link::on_bandwidth_change.connect(instr_link_on_bandwidth_change);
 366     simgrid::s4u::NetZone::on_seal.connect([](simgrid::s4u::NetZone& /*netzone*/) { currentContainer.pop_back(); });
 367     simgrid::kernel::routing::NetPoint::on_creation.connect(instr_netpoint_on_creation);
 368   }
 369   simgrid::s4u::NetZone::on_creation.connect(instr_netzone_on_creation);
 370
 371   simgrid::surf::CpuAction::on_state_change.connect(instr_action_on_state_change);
 372   simgrid::s4u::Link::on_communication_state_change.connect(instr_action_on_state_change);
 373
 374   if (TRACE_actor_is_enabled()) {
 375     simgrid::s4u::Actor::on_creation.connect(instr_actor_on_creation);
 376     simgrid::s4u::Actor::on_destruction.connect([](simgrid::s4u::ActorPtr actor) {
 377       auto container = simgrid::instr::Container::by_name_or_null(instr_pid(actor.get()));
 378       if (container != nullptr)
 379         container->remove_from_parent();
 380     });
 381     simgrid::s4u::Actor::on_suspend.connect([](simgrid::s4u::ActorPtr actor) {
 382       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->push_event("suspend");
 383     });
 384     simgrid::s4u::Actor::on_resume.connect([](simgrid::s4u::ActorPtr actor) {
 385       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->pop_event();
 386     });
 387     simgrid::s4u::Actor::on_sleep.connect([](simgrid::s4u::ActorPtr actor) {
 388       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->push_event("sleep");
 389     });
 390     simgrid::s4u::Actor::on_wake_up.connect([](simgrid::s4u::ActorPtr actor) {
 391       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->pop_event();
 392     });
 393     simgrid::s4u::Exec::on_start.connect([](simgrid::s4u::ActorPtr actor) {
 394       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->push_event("execute");
 395     });
 396     simgrid::s4u::Exec::on_completion.connect([](simgrid::s4u::ActorPtr actor) {
 397       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->pop_event();
 398     });
 399     simgrid::s4u::Comm::on_sender_start.connect([](simgrid::s4u::ActorPtr actor) {
 400       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->push_event("send");
 401     });
 402     simgrid::s4u::Comm::on_receiver_start.connect([](simgrid::s4u::ActorPtr actor) {
 403       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->push_event("receive");
 404     });
 405     simgrid::s4u::Comm::on_completion.connect([](simgrid::s4u::ActorPtr actor) {
 406       simgrid::instr::Container::by_name(instr_pid(actor.get()))->get_state("ACTOR_STATE")->pop_event();
 407     });
 408     simgrid::s4u::Actor::on_migration_start.connect(instr_actor_on_migration_start);
 409     simgrid::s4u::Actor::on_migration_end.connect(instr_actor_on_migration_end);
 410   }
 411
 412   if (TRACE_vm_is_enabled()) {
 413     simgrid::s4u::Host::on_creation.connect(instr_vm_on_creation);
 414     simgrid::s4u::VirtualMachine::on_start.connect([](simgrid::s4u::VirtualMachine& vm) {
 415       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->push_event("start");
 416     });
 417     simgrid::s4u::VirtualMachine::on_started.connect([](simgrid::s4u::VirtualMachine& vm) {
 418       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->pop_event();
 419     });
 420     simgrid::s4u::VirtualMachine::on_suspend.connect([](simgrid::s4u::VirtualMachine& vm) {
 421       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->push_event("suspend");
 422     });
 423     simgrid::s4u::VirtualMachine::on_resume.connect([](simgrid::s4u::VirtualMachine& vm) {
 424       simgrid::instr::Container::by_name(vm.get_name())->get_state("VM_STATE")->pop_event();
 425     });
 426     simgrid::s4u::Host::on_destruction.connect(
 427         [](simgrid::s4u::Host& host) { simgrid::instr::Container::by_name(host.get_name())->remove_from_parent(); });
 428   }
 429 }
 430 /*
 431  * user categories support
 432  */
 433 static void recursiveNewVariableType(std::string new_typename, std::string color, simgrid::instr::Type* root)
 434 {
 435   if (root->get_name() == "HOST" || root->get_name() == "VM")
 436     root->by_name_or_create(std::string("p") + new_typename, color);
 437
 438   if (root->get_name() == "LINK")
 439     root->by_name_or_create(std::string("b") + new_typename, color);
 440
 441   for (auto elm : root->children_) {
 442     recursiveNewVariableType(new_typename, color, elm.second);
 443   }
 444 }
 445
 446 void instr_new_variable_type(std::string new_typename, std::string color)
 447 {
 448   recursiveNewVariableType(new_typename, color, simgrid::instr::Container::get_root()->type_);
 449 }
 450
 451 static void recursiveNewUserVariableType(std::string father_type, std::string new_typename, std::string color,
 452                                          simgrid::instr::Type* root)
 453 {
 454   if (root->get_name() == father_type) {
 455     root->by_name_or_create(new_typename, color);
 456   }
 457   for (auto elm : root->children_)
 458     recursiveNewUserVariableType(father_type, new_typename, color, elm.second);
 459 }
 460
 461 void instr_new_user_variable_type(std::string father_type, std::string new_typename, std::string color)
 462 {
 463   recursiveNewUserVariableType(father_type, new_typename, color, simgrid::instr::Container::get_root()->type_);
 464 }
 465
 466 static void recursiveNewUserStateType(std::string father_type, std::string new_typename, simgrid::instr::Type* root)
 467 {
 468   if (root->get_name() == father_type)
 469     root->by_name_or_create<simgrid::instr::StateType>(new_typename);
 470
 471   for (auto elm : root->children_)
 472     recursiveNewUserStateType(father_type, new_typename, elm.second);
 473 }
 474
 475 void instr_new_user_state_type(std::string father_type, std::string new_typename)
 476 {
 477   recursiveNewUserStateType(father_type, new_typename, simgrid::instr::Container::get_root()->type_);
 478 }
 479
 480 static void recursiveNewValueForUserStateType(std::string type_name, const char* val, std::string color,
 481                                               simgrid::instr::Type* root)
 482 {
 483   if (root->get_name() == type_name)
 484     static_cast<simgrid::instr::StateType*>(root)->add_entity_value(val, color);
 485
 486   for (auto elm : root->children_)
 487     recursiveNewValueForUserStateType(type_name, val, color, elm.second);
 488 }
 489
 490 void instr_new_value_for_user_state_type(std::string type_name, const char* value, std::string color)
 491 {
 492   recursiveNewValueForUserStateType(type_name, value, color, simgrid::instr::Container::get_root()->type_);
 493 }
 494
 495 #define GRAPHICATOR_SUPPORT_FUNCTIONS
 496
 497 static void recursiveXBTGraphExtraction(xbt_graph_t graph, std::map<std::string, xbt_node_t>* nodes,
 498                                         std::map<std::string, xbt_edge_t>* edges, sg_netzone_t netzone,
 499                                         container_t container)
 500 {
 501   if (not netzone->get_children().empty()) {
 502     // bottom-up recursion
 503     for (auto const& netzone_child : netzone->get_children()) {
 504       container_t child_container = container->children_.at(netzone_child->get_cname());
 505       recursiveXBTGraphExtraction(graph, nodes, edges, netzone_child, child_container);
 506     }
 507   }
 508
 509   netzone->get_impl()->get_graph(graph, nodes, edges);
 510 }
 511
 512 xbt_graph_t instr_routing_platform_graph()
 513 {
 514   xbt_graph_t ret                          = xbt_graph_new_graph(0, nullptr);
 515   std::map<std::string, xbt_node_t>* nodes = new std::map<std::string, xbt_node_t>;
 516   std::map<std::string, xbt_edge_t>* edges = new std::map<std::string, xbt_edge_t>;
 517   recursiveXBTGraphExtraction(ret, nodes, edges, simgrid::s4u::Engine::get_instance()->get_netzone_root(),
 518                               simgrid::instr::Container::get_root());
 519   delete nodes;
 520   delete edges;
 521   return ret;
 522 }
 523
 524 void instr_routing_platform_graph_export_graphviz(xbt_graph_t g, const char* filename)
 525 {
 526   unsigned int cursor = 0;
 527   xbt_node_t node     = nullptr;
 528   xbt_edge_t edge     = nullptr;
 529
 530   FILE* file = fopen(filename, "w");
 531   xbt_assert(file, "Failed to open %s \n", filename);
 532
 533   if (g->directed)
 534     fprintf(file, "digraph test {\n");
 535   else
 536     fprintf(file, "graph test {\n");
 537
 538   fprintf(file, "  graph [overlap=scale]\n");
 539
 540   fprintf(file, "  node [shape=box, style=filled]\n");
 541   fprintf(file, "  node [width=.3, height=.3, style=filled, color=skyblue]\n\n");
 542
 543   xbt_dynar_foreach (g->nodes, cursor, node) {
 544     fprintf(file, "  \"%s\";\n", instr_node_name(node));
 545   }
 546   xbt_dynar_foreach (g->edges, cursor, edge) {
 547     const char* src_s = instr_node_name(edge->src);
 548     const char* dst_s = instr_node_name(edge->dst);
 549     if (g->directed)
 550       fprintf(file, "  \"%s\" -> \"%s\";\n", src_s, dst_s);
 551     else
 552       fprintf(file, "  \"%s\" -- \"%s\";\n", src_s, dst_s);
 553   }
 554   fprintf(file, "}\n");
 555   fclose(file);
 556 }