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[simgrid.git] / src / surf / sg_platf.cpp
1 /* Copyright (c) 2006-2018. 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 "simgrid/kernel/routing/ClusterZone.hpp"
7 #include "simgrid/kernel/routing/DijkstraZone.hpp"
8 #include "simgrid/kernel/routing/DragonflyZone.hpp"
9 #include "simgrid/kernel/routing/EmptyZone.hpp"
10 #include "simgrid/kernel/routing/FatTreeZone.hpp"
11 #include "simgrid/kernel/routing/FloydZone.hpp"
12 #include "simgrid/kernel/routing/FullZone.hpp"
13 #include "simgrid/kernel/routing/NetPoint.hpp"
14 #include "simgrid/kernel/routing/NetZoneImpl.hpp"
15 #include "simgrid/kernel/routing/TorusZone.hpp"
16 #include "simgrid/kernel/routing/VivaldiZone.hpp"
17 #include "simgrid/s4u/Engine.hpp"
18 #include "src/include/simgrid/sg_config.hpp"
19 #include "src/kernel/EngineImpl.hpp"
20 #include "src/simix/smx_host_private.hpp"
21 #include "src/simix/smx_private.hpp"
22 #include "src/surf/HostImpl.hpp"
23 #include "src/surf/xml/platf_private.hpp"
24
25 #include <string>
26
27 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
28
29 XBT_PRIVATE std::map<std::string, simgrid::surf::StorageImpl*> mount_list;
30 XBT_PRIVATE std::vector<std::string> known_storages;
31
32 namespace simgrid {
33 namespace surf {
34
35 simgrid::xbt::signal<void(kernel::routing::ClusterCreationArgs*)> on_cluster;
36 }
37 }
38
39 static int surf_parse_models_setup_already_called = 0;
40 std::map<std::string, simgrid::surf::StorageType*> storage_types;
41
42 /** The current AS in the parsing */
43 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
44 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
45 {
46   return current_routing;
47 }
48
49 /** Module management function: creates all internal data structures */
50 void sg_platf_init()
51 { /* Do nothing: just for symmetry of user code */
52 }
53
54 /** Module management function: frees all internal data structures */
55 void sg_platf_exit() {
56   simgrid::surf::on_cluster.disconnectSlots();
57   simgrid::s4u::onPlatformCreated.disconnectSlots();
58
59   /* make sure that we will reinit the models while loading the platf once reinited */
60   surf_parse_models_setup_already_called = 0;
61   surf_parse_lex_destroy();
62 }
63
64 /** @brief Add an host to the current AS */
65 void sg_platf_new_host(simgrid::kernel::routing::HostCreationArgs* args)
66 {
67   std::map<std::string, std::string> props;
68   if (args->properties) {
69     for (auto const& elm : *args->properties)
70       props.insert({elm.first, elm.second});
71     delete args->properties;
72   }
73
74   simgrid::s4u::Host* host =
75       routing_get_current()->create_host(args->id, &args->speed_per_pstate, args->core_amount, &props);
76
77   host->pimpl_->storage_ = mount_list;
78   mount_list.clear();
79
80   /* Change from the defaults */
81   if (args->state_trace)
82     host->pimpl_cpu->setStateTrace(args->state_trace);
83   if (args->speed_trace)
84     host->pimpl_cpu->set_speed_trace(args->speed_trace);
85   if (args->pstate != 0)
86     host->pimpl_cpu->setPState(args->pstate);
87   if (args->coord && strcmp(args->coord, ""))
88     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
89 }
90
91 /** @brief Add a "router" to the network element list */
92 simgrid::kernel::routing::NetPoint* sg_platf_new_router(std::string name, const char* coords)
93 {
94   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
95
96   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
97     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
98   xbt_assert(nullptr == simgrid::s4u::Engine::getInstance()->getNetpointByNameOrNull(name),
99              "Refusing to create a router named '%s': this name already describes a node.", name.c_str());
100
101   simgrid::kernel::routing::NetPoint* netpoint =
102       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
103   XBT_DEBUG("Router '%s' has the id %u", name.c_str(), netpoint->id());
104
105   if (coords && strcmp(coords, ""))
106     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
107
108
109   return netpoint;
110 }
111
112 void sg_platf_new_link(simgrid::kernel::routing::LinkCreationArgs* link)
113 {
114   std::vector<std::string> names;
115
116   if (link->policy == SURF_LINK_SPLITDUPLEX) {
117     names.push_back(link->id+ "_UP");
118     names.push_back(link->id+ "_DOWN");
119   } else {
120     names.push_back(link->id);
121   }
122   for (auto const& link_name : names) {
123     simgrid::kernel::resource::LinkImpl* l =
124         surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
125
126     if (link->properties) {
127       for (auto const& elm : *link->properties)
128         l->setProperty(elm.first, elm.second);
129     }
130
131     if (link->latency_trace)
132       l->setLatencyTrace(link->latency_trace);
133     if (link->bandwidth_trace)
134       l->setBandwidthTrace(link->bandwidth_trace);
135     if (link->state_trace)
136       l->setStateTrace(link->state_trace);
137   }
138   delete link->properties;
139 }
140
141 void sg_platf_new_cluster(simgrid::kernel::routing::ClusterCreationArgs* cluster)
142 {
143   using simgrid::kernel::routing::ClusterZone;
144   using simgrid::kernel::routing::DragonflyZone;
145   using simgrid::kernel::routing::FatTreeZone;
146   using simgrid::kernel::routing::TorusZone;
147
148   int rankId=0;
149
150   // What an inventive way of initializing the AS that I have as ancestor :-(
151   simgrid::kernel::routing::ZoneCreationArgs zone;
152   zone.id = cluster->id;
153   switch (cluster->topology) {
154     case simgrid::kernel::routing::ClusterTopology::TORUS:
155       zone.routing = A_surfxml_AS_routing_ClusterTorus;
156       break;
157     case simgrid::kernel::routing::ClusterTopology::DRAGONFLY:
158       zone.routing = A_surfxml_AS_routing_ClusterDragonfly;
159       break;
160     case simgrid::kernel::routing::ClusterTopology::FAT_TREE:
161       zone.routing = A_surfxml_AS_routing_ClusterFatTree;
162       break;
163     default:
164       zone.routing = A_surfxml_AS_routing_Cluster;
165       break;
166   }
167   sg_platf_new_Zone_begin(&zone);
168   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
169   current_as->parse_specific_arguments(cluster);
170
171   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
172     current_as->num_links_per_node_++;
173     current_as->has_loopback_ = true;
174   }
175
176   if(cluster->limiter_link > 0){
177     current_as->num_links_per_node_++;
178     current_as->has_limiter_ = true;
179   }
180
181   for (int const& i : *cluster->radicals) {
182     std::string host_id = std::string(cluster->prefix) + std::to_string(i) + cluster->suffix;
183     std::string link_id = std::string(cluster->id) + "_link_" + std::to_string(i);
184
185     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id.c_str(), cluster->speeds.front());
186
187     simgrid::kernel::routing::HostCreationArgs host;
188     host.id = host_id.c_str();
189     if ((cluster->properties != nullptr) && (not cluster->properties->empty())) {
190       host.properties = new std::map<std::string, std::string>;
191
192       for (auto const& elm : *cluster->properties)
193         host.properties->insert({elm.first, elm.second});
194     }
195
196     host.speed_per_pstate = cluster->speeds;
197     host.pstate = 0;
198     host.core_amount = cluster->core_amount;
199     host.coord = "";
200     sg_platf_new_host(&host);
201     XBT_DEBUG("</host>");
202
203     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id.c_str(), cluster->bw, cluster->lat);
204
205     // All links are saved in a matrix;
206     // every row describes a single node; every node may have multiple links.
207     // the first column may store a link from x to x if p_has_loopback is set
208     // the second column may store a limiter link if p_has_limiter is set
209     // other columns are to store one or more link for the node
210
211     //add a loopback link
212     simgrid::kernel::resource::LinkImpl* linkUp   = nullptr;
213     simgrid::kernel::resource::LinkImpl* linkDown = nullptr;
214     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
215       std::string tmp_link = link_id + "_loopback";
216       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->loopback_bw);
217
218       simgrid::kernel::routing::LinkCreationArgs link;
219       link.id        = tmp_link;
220       link.bandwidth = cluster->loopback_bw;
221       link.latency   = cluster->loopback_lat;
222       link.policy    = SURF_LINK_FATPIPE;
223       sg_platf_new_link(&link);
224       linkUp   = simgrid::kernel::resource::LinkImpl::byName(tmp_link);
225       linkDown = simgrid::kernel::resource::LinkImpl::byName(tmp_link);
226
227       auto* as_cluster = static_cast<ClusterZone*>(current_as);
228       as_cluster->private_links_.insert({as_cluster->node_pos(rankId), {linkUp, linkDown}});
229     }
230
231     //add a limiter link (shared link to account for maximal bandwidth of the node)
232     linkUp   = nullptr;
233     linkDown = nullptr;
234     if(cluster->limiter_link > 0){
235       std::string tmp_link = std::string(link_id) + "_limiter";
236       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link.c_str(), cluster->limiter_link);
237
238       simgrid::kernel::routing::LinkCreationArgs link;
239       link.id        = tmp_link;
240       link.bandwidth = cluster->limiter_link;
241       link.latency = 0;
242       link.policy = SURF_LINK_SHARED;
243       sg_platf_new_link(&link);
244       linkDown = simgrid::kernel::resource::LinkImpl::byName(tmp_link);
245       linkUp   = linkDown;
246       current_as->private_links_.insert({current_as->node_pos_with_loopback(rankId), {linkUp, linkDown}});
247     }
248
249     //call the cluster function that adds the others links
250     if (cluster->topology == simgrid::kernel::routing::ClusterTopology::FAT_TREE) {
251       static_cast<FatTreeZone*>(current_as)->add_processing_node(i);
252     } else {
253       current_as->create_links_for_node(cluster, i, rankId, current_as->node_pos_with_loopback_limiter(rankId));
254     }
255     rankId++;
256   }
257   delete cluster->properties;
258
259   // Add a router.
260   XBT_DEBUG(" ");
261   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id.c_str());
262   if (cluster->router_id.empty()) {
263     std::string newid   = std::string(cluster->prefix) + cluster->id + "_router" + cluster->suffix;
264     current_as->router_ = sg_platf_new_router(newid, NULL);
265   } else {
266     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
267   }
268
269   //Make the backbone
270   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
271
272     simgrid::kernel::routing::LinkCreationArgs link;
273     link.id        = std::string(cluster->id)+ "_backbone";
274     link.bandwidth = cluster->bb_bw;
275     link.latency   = cluster->bb_lat;
276     link.policy    = cluster->bb_sharing_policy;
277
278     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
279     sg_platf_new_link(&link);
280
281     routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl::byName(link.id));
282   }
283
284   XBT_DEBUG("</AS>");
285   sg_platf_new_Zone_seal();
286
287   simgrid::surf::on_cluster(cluster);
288   delete cluster->radicals;
289 }
290
291 void routing_cluster_add_backbone(simgrid::kernel::resource::LinkImpl* bb)
292 {
293   simgrid::kernel::routing::ClusterZone* cluster =
294       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
295
296   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
297   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->get_cname());
298
299   cluster->backbone_ = bb;
300   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->get_cname());
301 }
302
303 void sg_platf_new_cabinet(simgrid::kernel::routing::CabinetCreationArgs* cabinet)
304 {
305   for (int const& radical : *cabinet->radicals) {
306     std::string hostname = cabinet->prefix + std::to_string(radical) + cabinet->suffix;
307     simgrid::kernel::routing::HostCreationArgs host;
308     host.pstate           = 0;
309     host.core_amount      = 1;
310     host.id               = hostname.c_str();
311     host.speed_per_pstate.push_back(cabinet->speed);
312     sg_platf_new_host(&host);
313
314     simgrid::kernel::routing::LinkCreationArgs link;
315     link.policy    = SURF_LINK_SPLITDUPLEX;
316     link.latency   = cabinet->lat;
317     link.bandwidth = cabinet->bw;
318     link.id        = "link_" + hostname;
319     sg_platf_new_link(&link);
320
321     simgrid::kernel::routing::HostLinkCreationArgs host_link;
322     host_link.id        = hostname;
323     host_link.link_up   = std::string("link_") + hostname + "_UP";
324     host_link.link_down = std::string("link_") + hostname + "_DOWN";
325     sg_platf_new_hostlink(&host_link);
326   }
327   delete cabinet->radicals;
328 }
329
330 void sg_platf_new_storage(simgrid::kernel::routing::StorageCreationArgs* storage)
331 {
332   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
333              "Refusing to add a second storage named \"%s\"", storage->id.c_str());
334
335   simgrid::surf::StorageType* stype;
336   auto st = storage_types.find(storage->type_id);
337   if (st != storage_types.end()) {
338     stype = st->second;
339   } else {
340     xbt_die("No storage type '%s'", storage->type_id.c_str());
341   }
342
343   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id.c_str(),
344             storage->type_id.c_str(), storage->content.c_str());
345
346   known_storages.push_back(storage->id);
347
348   // if storage content is not specified use the content of storage_type if any
349   if (storage->content.empty() && not stype->content.empty()) {
350     storage->content = stype->content;
351     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id.c_str(),
352               stype->id.c_str());
353   }
354
355   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
356             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
357             "\n\t\tproperties '%p''\n",
358             storage->id.c_str(), stype->model.c_str(), stype->id.c_str(), storage->content.c_str(),
359             storage->properties);
360
361   auto s = surf_storage_model->createStorage(storage->id, stype->id, storage->content, storage->attach);
362
363   if (storage->properties) {
364     for (auto const& elm : *storage->properties)
365       s->setProperty(elm.first, elm.second);
366     delete storage->properties;
367   }
368 }
369
370 void sg_platf_new_storage_type(simgrid::kernel::routing::StorageTypeCreationArgs* storage_type)
371 {
372   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
373              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id.c_str());
374
375   simgrid::surf::StorageType* stype =
376       new simgrid::surf::StorageType(storage_type->id, storage_type->model, storage_type->content,
377                                      storage_type->properties, storage_type->model_properties, storage_type->size);
378
379   XBT_DEBUG("Create a storage type id '%s' with model '%s', content '%s'", storage_type->id.c_str(),
380             storage_type->model.c_str(), storage_type->content.c_str());
381
382   storage_types[storage_type->id] = stype;
383 }
384
385 void sg_platf_new_mount(simgrid::kernel::routing::MountCreationArgs* mount)
386 {
387   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
388              "Cannot mount non-existent disk \"%s\"", mount->storageId.c_str());
389
390   XBT_DEBUG("Mount '%s' on '%s'", mount->storageId.c_str(), mount->name.c_str());
391
392   if (mount_list.empty())
393     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
394   mount_list.insert({mount->name, simgrid::s4u::Engine::getInstance()->storageByName(mount->storageId)->getImpl()});
395 }
396
397 void sg_platf_new_route(simgrid::kernel::routing::RouteCreationArgs* route)
398 {
399   routing_get_current()->add_route(route->src, route->dst, route->gw_src, route->gw_dst, route->link_list,
400                                    route->symmetrical);
401 }
402
403 void sg_platf_new_bypassRoute(simgrid::kernel::routing::RouteCreationArgs* bypassRoute)
404 {
405   routing_get_current()->add_bypass_route(bypassRoute->src, bypassRoute->dst, bypassRoute->gw_src, bypassRoute->gw_dst,
406                                           bypassRoute->link_list, bypassRoute->symmetrical);
407 }
408
409 void sg_platf_new_actor(simgrid::kernel::routing::ActorCreationArgs* actor)
410 {
411   sg_host_t host = sg_host_by_name(actor->host);
412   if (not host) {
413     // The requested host does not exist. Do a nice message to the user
414     std::string msg = std::string("Cannot create actor '") + actor->function + "': host '" + actor->host +
415                       "' does not exist\nExisting hosts: '";
416
417     std::vector<simgrid::s4u::Host*> list = simgrid::s4u::Engine::getInstance()->getAllHosts();
418
419     for (auto const& host : list) {
420       msg += host->get_name();
421       msg += "', '";
422       if (msg.length() > 1024) {
423         msg.pop_back(); // remove trailing quote
424         msg += "...(list truncated)......";
425         break;
426       }
427     }
428     xbt_die("%s", msg.c_str());
429   }
430   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(actor->function);
431   xbt_assert(factory, "Function '%s' unknown", actor->function);
432
433   double start_time = actor->start_time;
434   double kill_time  = actor->kill_time;
435   bool auto_restart = actor->on_failure != simgrid::kernel::routing::ActorOnFailure::DIE;
436
437   std::string actor_name     = actor->args[0];
438   std::function<void()> code = factory(std::move(actor->args));
439   std::shared_ptr<std::map<std::string, std::string>> properties(actor->properties);
440
441   simgrid::kernel::actor::ProcessArg* arg =
442       new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
443
444   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
445
446   if (start_time > SIMIX_get_clock()) {
447
448     arg = new simgrid::kernel::actor::ProcessArg(actor_name, code, nullptr, host, kill_time, properties, auto_restart);
449
450     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->get_cname(), start_time);
451     SIMIX_timer_set(start_time, [arg, auto_restart]() {
452       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
453                                                                 arg->host, arg->properties.get(), nullptr);
454       if (arg->kill_time >= 0)
455         simcall_process_set_kill_time(actor, arg->kill_time);
456       if (auto_restart)
457         SIMIX_process_auto_restart_set(actor, auto_restart);
458       delete arg;
459     });
460   } else {                      // start_time <= SIMIX_get_clock()
461     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->get_cname());
462
463     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
464                                                               arg->properties.get(), nullptr);
465
466     /* The actor creation will fail if the host is currently dead, but that's fine */
467     if (actor != nullptr) {
468       if (arg->kill_time >= 0)
469         simcall_process_set_kill_time(actor, arg->kill_time);
470       if (auto_restart)
471         SIMIX_process_auto_restart_set(actor, auto_restart);
472     }
473   }
474 }
475
476 void sg_platf_new_peer(simgrid::kernel::routing::PeerCreationArgs* peer)
477 {
478   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
479   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
480
481   std::vector<double> speedPerPstate;
482   speedPerPstate.push_back(peer->speed);
483   simgrid::s4u::Host* host = as->create_host(peer->id.c_str(), &speedPerPstate, 1, nullptr);
484
485   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
486
487   /* Change from the defaults */
488   if (peer->state_trace)
489     host->pimpl_cpu->setStateTrace(peer->state_trace);
490   if (peer->speed_trace)
491     host->pimpl_cpu->set_speed_trace(peer->speed_trace);
492 }
493
494 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
495
496 void sg_platf_end() {
497   simgrid::s4u::onPlatformCreated();
498 }
499
500 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
501 static void surf_config_models_setup()
502 {
503   std::string host_model_name    = xbt_cfg_get_string("host/model");
504   std::string network_model_name = xbt_cfg_get_string("network/model");
505   std::string cpu_model_name     = xbt_cfg_get_string("cpu/model");
506   std::string storage_model_name = xbt_cfg_get_string("storage/model");
507
508   /* The compound host model is needed when using non-default net/cpu models */
509   if ((not xbt_cfg_is_default_value("network/model") || not xbt_cfg_is_default_value("cpu/model")) &&
510       xbt_cfg_is_default_value("host/model")) {
511     host_model_name = "compound";
512     xbt_cfg_set_string("host/model", host_model_name.c_str());
513   }
514
515   XBT_DEBUG("host model: %s", host_model_name.c_str());
516   if (host_model_name == "compound") {
517     xbt_assert(not cpu_model_name.empty(), "Set a cpu model to use with the 'compound' host model");
518     xbt_assert(not network_model_name.empty(), "Set a network model to use with the 'compound' host model");
519
520     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
521     surf_cpu_model_description[cpu_id].model_init_preparse();
522
523     int network_id = find_model_description(surf_network_model_description, network_model_name);
524     surf_network_model_description[network_id].model_init_preparse();
525   }
526
527   XBT_DEBUG("Call host_model_init");
528   int host_id = find_model_description(surf_host_model_description, host_model_name);
529   surf_host_model_description[host_id].model_init_preparse();
530
531   XBT_DEBUG("Call vm_model_init");
532   surf_vm_model_init_HL13();
533
534   XBT_DEBUG("Call storage_model_init");
535   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
536   surf_storage_model_description[storage_id].model_init_preparse();
537 }
538
539 /**
540  * \brief Add a Zone to the platform
541  *
542  * Add a new autonomous system to the platform. Any elements (such as host, router or sub-Zone) added after this call
543  * and before the corresponding call to sg_platf_new_Zone_seal() will be added to this Zone.
544  *
545  * Once this function was called, the configuration concerning the used models cannot be changed anymore.
546  *
547  * @param zone the parameters defining the Zone to build.
548  */
549 simgrid::s4u::NetZone* sg_platf_new_Zone_begin(simgrid::kernel::routing::ZoneCreationArgs* zone)
550 {
551   if (not surf_parse_models_setup_already_called) {
552     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
553      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
554      *
555      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
556      * (FIXME: check it out by creating a file beginning with one of these tags)
557      * but cluster and peer create ASes internally, so putting the code in there is ok.
558      */
559     surf_parse_models_setup_already_called = 1;
560     surf_config_models_setup();
561   }
562
563   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
564                             * any further config now that we created some real content */
565
566   /* search the routing model */
567   simgrid::kernel::routing::NetZoneImpl* new_zone = nullptr;
568   switch (zone->routing) {
569     case A_surfxml_AS_routing_Cluster:
570       new_zone = new simgrid::kernel::routing::ClusterZone(current_routing, zone->id);
571       break;
572     case A_surfxml_AS_routing_ClusterDragonfly:
573       new_zone = new simgrid::kernel::routing::DragonflyZone(current_routing, zone->id);
574       break;
575     case A_surfxml_AS_routing_ClusterTorus:
576       new_zone = new simgrid::kernel::routing::TorusZone(current_routing, zone->id);
577       break;
578     case A_surfxml_AS_routing_ClusterFatTree:
579       new_zone = new simgrid::kernel::routing::FatTreeZone(current_routing, zone->id);
580       break;
581     case A_surfxml_AS_routing_Dijkstra:
582       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, false);
583       break;
584     case A_surfxml_AS_routing_DijkstraCache:
585       new_zone = new simgrid::kernel::routing::DijkstraZone(current_routing, zone->id, true);
586       break;
587     case A_surfxml_AS_routing_Floyd:
588       new_zone = new simgrid::kernel::routing::FloydZone(current_routing, zone->id);
589       break;
590     case A_surfxml_AS_routing_Full:
591       new_zone = new simgrid::kernel::routing::FullZone(current_routing, zone->id);
592       break;
593     case A_surfxml_AS_routing_None:
594       new_zone = new simgrid::kernel::routing::EmptyZone(current_routing, zone->id);
595       break;
596     case A_surfxml_AS_routing_Vivaldi:
597       new_zone = new simgrid::kernel::routing::VivaldiZone(current_routing, zone->id);
598       break;
599     default:
600       xbt_die("Not a valid model!");
601       break;
602   }
603
604   if (current_routing == nullptr) { /* it is the first one */
605     xbt_assert(simgrid::s4u::Engine::getInstance()->pimpl->netRoot_ == nullptr,
606                "All defined components must belong to a networking zone.");
607     simgrid::s4u::Engine::getInstance()->pimpl->netRoot_ = new_zone;
608
609   } else {
610     /* set the father behavior */
611     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
612       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
613     /* add to the sons dictionary */
614     current_routing->getChildren()->push_back(static_cast<simgrid::s4u::NetZone*>(new_zone));
615   }
616
617   /* set the new current component of the tree */
618   current_routing = new_zone;
619
620   simgrid::s4u::NetZone::onCreation(*new_zone); // notify the signal
621
622   return new_zone;
623 }
624
625 /**
626  * \brief Specify that the description of the current AS is finished
627  *
628  * Once you've declared all the content of your AS, you have to seal
629  * it with this call. Your AS is not usable until you call this function.
630  */
631 void sg_platf_new_Zone_seal()
632 {
633   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
634   current_routing->seal();
635   simgrid::s4u::NetZone::onSeal(*current_routing);
636   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->getFather());
637 }
638
639 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
640 void sg_platf_new_hostlink(simgrid::kernel::routing::HostLinkCreationArgs* hostlink)
641 {
642   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id.c_str())->pimpl_netpoint;
643   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id.c_str());
644   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
645              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
646
647   simgrid::kernel::resource::LinkImpl* linkUp   = simgrid::kernel::resource::LinkImpl::byName(hostlink->link_up);
648   simgrid::kernel::resource::LinkImpl* linkDown = simgrid::kernel::resource::LinkImpl::byName(hostlink->link_down);
649
650   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up.c_str());
651   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down.c_str());
652
653   auto* as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
654
655   if (as_cluster->private_links_.find(netpoint->id()) != as_cluster->private_links_.end())
656     surf_parse_error(std::string("Host_link for '") + hostlink->id.c_str() + "' is already defined!");
657
658   XBT_DEBUG("Push Host_link for host '%s' to position %u", netpoint->get_cname(), netpoint->id());
659   as_cluster->private_links_.insert({netpoint->id(), {linkUp, linkDown}});
660 }
661
662 void sg_platf_new_trace(simgrid::kernel::routing::TraceCreationArgs* trace)
663 {
664   tmgr_trace_t tmgr_trace;
665   if (not trace->file.empty()) {
666     tmgr_trace = tmgr_trace_new_from_file(trace->file);
667   } else {
668     xbt_assert(not trace->pc_data.empty(), "Trace '%s' must have either a content, or point to a file on disk.",
669                trace->id.c_str());
670     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
671   }
672   traces_set_list.insert({trace->id, tmgr_trace});
673 }