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Merge pull request #193 from Takishipp/signals
[simgrid.git] / src / surf / sg_platf.cpp
1 /* Copyright (c) 2006-2017. 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/s4u/Engine.hpp"
7 #include "simgrid/s4u/Storage.hpp"
8
9 #include "src/kernel/EngineImpl.hpp"
10 #include "src/simix/smx_private.h"
11
12 #include "src/include/simgrid/sg_config.h"
13
14 #include "src/surf/HostImpl.hpp"
15 #include "src/surf/cpu_interface.hpp"
16 #include "src/surf/network_interface.hpp"
17
18 #include "src/kernel/routing/ClusterZone.hpp"
19 #include "src/kernel/routing/DijkstraZone.hpp"
20 #include "src/kernel/routing/DragonflyZone.hpp"
21 #include "src/kernel/routing/EmptyZone.hpp"
22 #include "src/kernel/routing/FatTreeZone.hpp"
23 #include "src/kernel/routing/FloydZone.hpp"
24 #include "src/kernel/routing/FullZone.hpp"
25 #include "src/kernel/routing/NetPoint.hpp"
26 #include "src/kernel/routing/NetZoneImpl.hpp"
27 #include "src/kernel/routing/TorusZone.hpp"
28 #include "src/kernel/routing/VivaldiZone.hpp"
29 #include <string>
30 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
31
32 XBT_PRIVATE std::map<std::string, simgrid::surf::StorageImpl*> mount_list;
33 XBT_PRIVATE std::vector<std::string> known_storages;
34
35 namespace simgrid {
36 namespace surf {
37
38 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
39
40 }
41 }
42
43 // FIXME: The following duplicates the content of s4u::Host
44 namespace simgrid {
45 namespace s4u {
46 extern std::map<std::string, simgrid::s4u::Host*> host_list;
47 }
48 }
49
50 static int surf_parse_models_setup_already_called = 0;
51 std::map<std::string, storage_type_t> storage_types;
52
53 /** The current AS in the parsing */
54 static simgrid::kernel::routing::NetZoneImpl* current_routing = nullptr;
55 static simgrid::kernel::routing::NetZoneImpl* routing_get_current()
56 {
57   return current_routing;
58 }
59
60 /** Module management function: creates all internal data structures */
61 void sg_platf_init()
62 { /* Do nothing: just for symmetry of user code */
63 }
64
65 /** Module management function: frees all internal data structures */
66 void sg_platf_exit() {
67   simgrid::surf::on_cluster.disconnect_all_slots();
68   simgrid::s4u::onPlatformCreated.disconnect_all_slots();
69
70   /* make sure that we will reinit the models while loading the platf once reinited */
71   surf_parse_models_setup_already_called = 0;
72   surf_parse_lex_destroy();
73 }
74
75 /** @brief Add an host to the current AS */
76 void sg_platf_new_host(sg_platf_host_cbarg_t args)
77 {
78   std::unordered_map<std::string, std::string> props;
79   if (args->properties) {
80     xbt_dict_cursor_t cursor=nullptr;
81     char *key;
82     char* data;
83     xbt_dict_foreach (args->properties, cursor, key, data)
84       props[key] = data;
85     xbt_dict_free(&args->properties);
86   }
87
88   simgrid::s4u::Host* host =
89       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
90
91   host->pimpl_->storage_ = mount_list;
92   mount_list.clear();
93
94   /* Change from the defaults */
95   if (args->state_trace)
96     host->pimpl_cpu->setStateTrace(args->state_trace);
97   if (args->speed_trace)
98     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
99   if (args->pstate != 0)
100     host->pimpl_cpu->setPState(args->pstate);
101   if (args->coord && strcmp(args->coord, ""))
102     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
103
104 }
105
106 /** @brief Add a "router" to the network element list */
107 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const char* name, const char* coords)
108 {
109   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
110
111   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
112     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
113   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netpointByNameOrNull(name),
114              "Refusing to create a router named '%s': this name already describes a node.", name);
115
116   simgrid::kernel::routing::NetPoint* netpoint =
117       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
118   XBT_DEBUG("Router '%s' has the id %d", name, netpoint->id());
119
120   if (coords && strcmp(coords, ""))
121     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
122
123
124   return netpoint;
125 }
126
127 void sg_platf_new_link(LinkCreationArgs* link)
128 {
129   std::vector<std::string> names;
130
131   if (link->policy == SURF_LINK_FULLDUPLEX) {
132     names.push_back(link->id+ "_UP");
133     names.push_back(link->id+ "_DOWN");
134   } else {
135     names.push_back(link->id);
136   }
137   for (auto link_name : names) {
138     simgrid::surf::LinkImpl* l =
139         surf_network_model->createLink(link_name.c_str(), link->bandwidth, link->latency, link->policy);
140
141     if (link->properties) {
142       xbt_dict_cursor_t cursor = nullptr;
143       char* key;
144       char* data;
145       xbt_dict_foreach (link->properties, cursor, key, data)
146         l->setProperty(key, data);
147       xbt_dict_free(&link->properties);
148     }
149
150     if (link->latency_trace)
151       l->setLatencyTrace(link->latency_trace);
152     if (link->bandwidth_trace)
153       l->setBandwidthTrace(link->bandwidth_trace);
154     if (link->state_trace)
155       l->setStateTrace(link->state_trace);
156   }
157 }
158
159 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
160 {
161   using simgrid::kernel::routing::ClusterZone;
162   using simgrid::kernel::routing::DragonflyZone;
163   using simgrid::kernel::routing::FatTreeZone;
164   using simgrid::kernel::routing::TorusZone;
165
166   int rankId=0;
167
168   // What an inventive way of initializing the AS that I have as ancestor :-(
169   s_sg_platf_AS_cbarg_t AS;
170   AS.id = cluster->id;
171   switch (cluster->topology) {
172   case SURF_CLUSTER_TORUS:
173     AS.routing = A_surfxml_AS_routing_ClusterTorus;
174     break;
175   case SURF_CLUSTER_DRAGONFLY:
176     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
177     break;
178   case SURF_CLUSTER_FAT_TREE:
179     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
180     break;
181   default:
182     AS.routing = A_surfxml_AS_routing_Cluster;
183     break;
184   }
185   sg_platf_new_AS_begin(&AS);
186   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
187   current_as->parse_specific_arguments(cluster);
188
189   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
190     current_as->linkCountPerNode_++;
191     current_as->hasLoopback_ = 1;
192   }
193
194   if(cluster->limiter_link > 0){
195     current_as->linkCountPerNode_++;
196     current_as->hasLimiter_ = 1;
197   }
198
199   for (int i : *cluster->radicals) {
200     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
201     char * link_id = bprintf("%s_link_%d", cluster->id, i);
202
203     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speeds.front());
204
205     s_sg_platf_host_cbarg_t host;
206     memset(&host, 0, sizeof(host));
207     host.id = host_id;
208     if ((cluster->properties != nullptr) && (not xbt_dict_is_empty(cluster->properties))) {
209       xbt_dict_cursor_t cursor=nullptr;
210       char *key;
211       char* data;
212       host.properties = xbt_dict_new_homogeneous(free);
213
214       xbt_dict_foreach(cluster->properties,cursor,key,data) {
215         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
216       }
217     }
218
219     host.speed_per_pstate = cluster->speeds;
220     host.pstate = 0;
221     host.core_amount = cluster->core_amount;
222     host.coord = "";
223     sg_platf_new_host(&host);
224     XBT_DEBUG("</host>");
225
226     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
227
228     // All links are saved in a matrix;
229     // every row describes a single node; every node may have multiple links.
230     // the first column may store a link from x to x if p_has_loopback is set
231     // the second column may store a limiter link if p_has_limiter is set
232     // other columns are to store one or more link for the node
233
234     //add a loopback link
235     simgrid::surf::LinkImpl* linkUp   = nullptr;
236     simgrid::surf::LinkImpl* linkDown = nullptr;
237     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
238       char *tmp_link = bprintf("%s_loopback", link_id);
239       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
240
241       LinkCreationArgs link;
242       link.id        = tmp_link;
243       link.bandwidth = cluster->loopback_bw;
244       link.latency   = cluster->loopback_lat;
245       link.policy    = SURF_LINK_FATPIPE;
246       sg_platf_new_link(&link);
247       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
248       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
249       free(tmp_link);
250
251       auto as_cluster = static_cast<ClusterZone*>(current_as);
252       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
253     }
254
255     //add a limiter link (shared link to account for maximal bandwidth of the node)
256     linkUp   = nullptr;
257     linkDown = nullptr;
258     if(cluster->limiter_link > 0){
259       char *tmp_link = bprintf("%s_limiter", link_id);
260       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
261
262       LinkCreationArgs link;
263       link.id = tmp_link;
264       link.bandwidth = cluster->limiter_link;
265       link.latency = 0;
266       link.policy = SURF_LINK_SHARED;
267       sg_platf_new_link(&link);
268       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
269       linkUp   = linkDown;
270       free(tmp_link);
271       current_as->privateLinks_.insert(
272           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
273     }
274
275     //call the cluster function that adds the others links
276     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
277       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
278     } else {
279       current_as->create_links_for_node(cluster, i, rankId,
280           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
281     }
282     xbt_free(link_id);
283     xbt_free(host_id);
284     rankId++;
285   }
286   xbt_dict_free(&cluster->properties);
287
288   // Add a router.
289   XBT_DEBUG(" ");
290   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
291   if (not cluster->router_id || not strcmp(cluster->router_id, "")) {
292     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
293     current_as->router_ = sg_platf_new_router(newid, NULL);
294     free(newid);
295   } else {
296     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
297   }
298
299   //Make the backbone
300   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
301
302     LinkCreationArgs link;
303     link.id        = std::string(cluster->id)+ "_backbone";
304     link.bandwidth = cluster->bb_bw;
305     link.latency   = cluster->bb_lat;
306     link.policy    = cluster->bb_sharing_policy;
307
308     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
309     sg_platf_new_link(&link);
310
311     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
312   }
313
314   XBT_DEBUG("</AS>");
315   sg_platf_new_AS_seal();
316
317   simgrid::surf::on_cluster(cluster);
318   delete cluster->radicals;
319 }
320
321 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
322 {
323   simgrid::kernel::routing::ClusterZone* cluster =
324       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
325
326   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
327   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
328
329   cluster->backbone_ = bb;
330   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
331 }
332
333 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
334 {
335   for (int radical : *cabinet->radicals) {
336     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(cabinet->suffix);
337     s_sg_platf_host_cbarg_t host;
338     memset(&host, 0, sizeof(host));
339     host.pstate           = 0;
340     host.core_amount      = 1;
341     host.id               = hostname.c_str();
342     host.speed_per_pstate.push_back(cabinet->speed);
343     sg_platf_new_host(&host);
344
345     LinkCreationArgs link;
346     link.policy    = SURF_LINK_FULLDUPLEX;
347     link.latency   = cabinet->lat;
348     link.bandwidth = cabinet->bw;
349     link.id        = "link_" + hostname;
350     sg_platf_new_link(&link);
351
352     s_sg_platf_host_link_cbarg_t host_link;
353     memset(&host_link, 0, sizeof(host_link));
354     host_link.id        = hostname.c_str();
355     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
356     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
357     sg_platf_new_hostlink(&host_link);
358     free((char*)host_link.link_up);
359     free((char*)host_link.link_down);
360   }
361   delete cabinet->radicals;
362 }
363
364 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
365 {
366   xbt_assert(std::find(known_storages.begin(), known_storages.end(), storage->id) == known_storages.end(),
367              "Refusing to add a second storage named \"%s\"", storage->id);
368
369   xbt_assert(storage_types.find(storage->type_id) != storage_types.end(), "No storage type '%s'", storage->type_id);
370   storage_type_t stype = storage_types.at(storage->type_id);
371
372   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'", storage->id, storage->type_id,
373             storage->content);
374
375   known_storages.push_back(storage->id);
376
377   // if storage content is not specified use the content of storage_type if any
378   if (not strcmp(storage->content, "") && strcmp(stype->content, "")) {
379     storage->content      = stype->content;
380     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s)", storage->id, stype->type_id);
381   }
382
383   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
384             "\n\t\tmodel '%s' \n\t\tcontent '%s' "
385             "\n\t\tproperties '%p''\n",
386             storage->id, stype->model, stype->type_id, storage->content, storage->properties);
387
388   auto s = surf_storage_model->createStorage(storage->id, stype->type_id, storage->content, storage->attach);
389
390   if (storage->properties) {
391     xbt_dict_cursor_t cursor = nullptr;
392     char *key;
393     char* data;
394     xbt_dict_foreach (storage->properties, cursor, key, data)
395       s->setProperty(key, data);
396     xbt_dict_free(&storage->properties);
397   }
398 }
399
400 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type)
401 {
402   xbt_assert(storage_types.find(storage_type->id) == storage_types.end(),
403              "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
404
405   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
406   stype->model = xbt_strdup(storage_type->model);
407   stype->properties = storage_type->properties;
408   stype->content = xbt_strdup(storage_type->content);
409   stype->type_id = xbt_strdup(storage_type->id);
410   stype->size = storage_type->size;
411   stype->model_properties = storage_type->model_properties;
412
413   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', content '%s'", stype->type_id, stype->model,
414             storage_type->content);
415
416   storage_types.insert({std::string(stype->type_id), stype});
417 }
418
419 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
420   xbt_assert(std::find(known_storages.begin(), known_storages.end(), mount->storageId) != known_storages.end(),
421              "Cannot mount non-existent disk \"%s\"", mount->storageId);
422
423   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
424
425   if (mount_list.empty())
426     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
427   mount_list.insert({std::string(mount->name), simgrid::surf::StorageImpl::byName(mount->storageId)});
428 }
429
430 void sg_platf_new_route(sg_platf_route_cbarg_t route)
431 {
432   routing_get_current()->addRoute(route);
433 }
434
435 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
436 {
437   routing_get_current()->addBypassRoute(bypassRoute);
438 }
439
440 void sg_platf_new_process(sg_platf_process_cbarg_t process)
441 {
442   sg_host_t host = sg_host_by_name(process->host);
443   if (not host) {
444     // The requested host does not exist. Do a nice message to the user
445     std::string msg = std::string("Cannot create process '") + process->function + "': host '" + process->host +
446                       "' does not exist\nExisting hosts: '";
447     for (auto kv : simgrid::s4u::host_list) {
448       simgrid::s4u::Host* host = kv.second;
449       msg += host->name();
450       msg += "', '";
451       if (msg.length() > 1024) {
452         msg.pop_back(); // remove trailing quote
453         msg += "...(list truncated)......";
454         break;
455       }
456     }
457     xbt_die("%s", msg.c_str());
458   }
459   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
460   xbt_assert(factory, "Function '%s' unknown", process->function);
461
462   double start_time = process->start_time;
463   double kill_time  = process->kill_time;
464   int auto_restart = process->on_failure == SURF_ACTOR_ON_FAILURE_DIE ? 0 : 1;
465
466   std::vector<std::string> args(process->argv, process->argv + process->argc);
467   std::function<void()> code = factory(std::move(args));
468
469   smx_process_arg_t arg = nullptr;
470
471   arg = new simgrid::simix::ProcessArg();
472   arg->name = std::string(process->argv[0]);
473   arg->code = code;
474   arg->data = nullptr;
475   arg->host = host;
476   arg->kill_time = kill_time;
477   arg->properties = current_property_set;
478
479   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
480
481   if (start_time > SIMIX_get_clock()) {
482
483     arg = new simgrid::simix::ProcessArg();
484     arg->name = std::string(process->argv[0]);
485     arg->code = std::move(code);
486     arg->data = nullptr;
487     arg->host = host;
488     arg->kill_time = kill_time;
489     arg->properties = current_property_set;
490
491     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
492     SIMIX_timer_set(start_time, [arg, auto_restart]() {
493       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
494                                                                 arg->host, arg->properties, nullptr);
495       if (arg->kill_time >= 0)
496         simcall_process_set_kill_time(actor, arg->kill_time);
497       if (auto_restart)
498         SIMIX_process_auto_restart_set(actor, auto_restart);
499       delete arg;
500     });
501   } else {                      // start_time <= SIMIX_get_clock()
502     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
503
504     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
505                                                               current_property_set, nullptr);
506
507     /* The actor creation will fail if the host is currently dead, but that's fine */
508     if (actor != nullptr) {
509       if (arg->kill_time >= 0)
510         simcall_process_set_kill_time(actor, arg->kill_time);
511       if (auto_restart)
512         SIMIX_process_auto_restart_set(actor, auto_restart);
513     }
514   }
515   current_property_set = nullptr;
516 }
517
518 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
519 {
520   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
521   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
522
523   std::vector<double> speedPerPstate;
524   speedPerPstate.push_back(peer->speed);
525   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
526
527   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
528
529   /* Change from the defaults */
530   if (peer->state_trace)
531     host->pimpl_cpu->setStateTrace(peer->state_trace);
532   if (peer->speed_trace)
533     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
534 }
535
536 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
537
538 void sg_platf_end() {
539   simgrid::s4u::onPlatformCreated();
540 }
541
542 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
543 static void surf_config_models_setup()
544 {
545   const char* host_model_name    = xbt_cfg_get_string("host/model");
546   const char* network_model_name = xbt_cfg_get_string("network/model");
547   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
548   const char* storage_model_name = xbt_cfg_get_string("storage/model");
549
550   /* The compound host model is needed when using non-default net/cpu models */
551   if ((not xbt_cfg_is_default_value("network/model") || not xbt_cfg_is_default_value("cpu/model")) &&
552       xbt_cfg_is_default_value("host/model")) {
553     host_model_name = "compound";
554     xbt_cfg_set_string("host/model", host_model_name);
555   }
556
557   XBT_DEBUG("host model: %s", host_model_name);
558   if (not strcmp(host_model_name, "compound")) {
559     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
560     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
561
562     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
563     surf_cpu_model_description[cpu_id].model_init_preparse();
564
565     int network_id = find_model_description(surf_network_model_description, network_model_name);
566     surf_network_model_description[network_id].model_init_preparse();
567   }
568
569   XBT_DEBUG("Call host_model_init");
570   int host_id = find_model_description(surf_host_model_description, host_model_name);
571   surf_host_model_description[host_id].model_init_preparse();
572
573   XBT_DEBUG("Call vm_model_init");
574   surf_vm_model_init_HL13();
575
576   XBT_DEBUG("Call storage_model_init");
577   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
578   surf_storage_model_description[storage_id].model_init_preparse();
579 }
580
581 /**
582  * \brief Add an AS to the platform
583  *
584  * Add a new autonomous system to the platform. Any elements (such as host,
585  * router or sub-AS) added after this call and before the corresponding call
586  * to sg_platf_new_AS_seal() will be added to this AS.
587  *
588  * Once this function was called, the configuration concerning the used
589  * models cannot be changed anymore.
590  *
591  * @param AS the parameters defining the AS to build.
592  */
593 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
594 {
595   if (not surf_parse_models_setup_already_called) {
596     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
597      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
598      *
599      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
600      * (FIXME: check it out by creating a file beginning with one of these tags)
601      * but cluster and peer create ASes internally, so putting the code in there is ok.
602      */
603     surf_parse_models_setup_already_called = 1;
604     surf_config_models_setup();
605   }
606
607   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
608                             * any further config now that we created some real content */
609
610   /* search the routing model */
611   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
612   switch(AS->routing){
613     case A_surfxml_AS_routing_Cluster:
614       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
615       break;
616     case A_surfxml_AS_routing_ClusterDragonfly:
617       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
618       break;
619     case A_surfxml_AS_routing_ClusterTorus:
620       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
621       break;
622     case A_surfxml_AS_routing_ClusterFatTree:
623       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
624       break;
625     case A_surfxml_AS_routing_Dijkstra:
626       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
627       break;
628     case A_surfxml_AS_routing_DijkstraCache:
629       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
630       break;
631     case A_surfxml_AS_routing_Floyd:
632       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
633       break;
634     case A_surfxml_AS_routing_Full:
635       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
636       break;
637     case A_surfxml_AS_routing_None:
638       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
639       break;
640     case A_surfxml_AS_routing_Vivaldi:
641       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
642       break;
643     default:
644       xbt_die("Not a valid model!");
645       break;
646   }
647
648   if (current_routing == nullptr) { /* it is the first one */
649     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
650                "All defined components must belong to a networking zone.");
651     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
652
653   } else {
654     /* set the father behavior */
655     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
656       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
657     /* add to the sons dictionary */
658     current_routing->children()->push_back(static_cast<simgrid::s4u::NetZone*>(new_as));
659   }
660
661   /* set the new current component of the tree */
662   current_routing = new_as;
663
664   simgrid::s4u::NetZone::onCreation(*new_as); // notify the signal
665
666   return new_as;
667 }
668
669 /**
670  * \brief Specify that the description of the current AS is finished
671  *
672  * Once you've declared all the content of your AS, you have to seal
673  * it with this call. Your AS is not usable until you call this function.
674  */
675 void sg_platf_new_AS_seal()
676 {
677   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
678   current_routing->seal();
679   simgrid::s4u::NetZone::onSeal(*current_routing);
680   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
681 }
682
683 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
684 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
685 {
686   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
687   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
688   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
689              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
690
691   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
692   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
693
694   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
695   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
696
697   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
698
699   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
700     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
701
702   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
703   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
704 }
705
706 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
707 {
708   tmgr_trace_t tmgr_trace;
709   if (trace->file && strcmp(trace->file, "") != 0) {
710     tmgr_trace = tmgr_trace_new_from_file(trace->file);
711   } else {
712     xbt_assert(strcmp(trace->pc_data, ""),
713         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
714     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
715   }
716   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
717 }