Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
plug leak
[simgrid.git] / src / surf / sg_platf.cpp
1
2 /* This program is free software; you can redistribute it and/or modify it
3  * under the terms of the license (GNU LGPL) which comes with this package. */
4
5 #include "simgrid/s4u/engine.hpp"
6
7 #include "src/kernel/EngineImpl.hpp"
8 #include "src/simix/smx_private.h"
9
10 #include "src/include/simgrid/sg_config.h"
11
12 #include "src/surf/HostImpl.hpp"
13 #include "src/surf/cpu_interface.hpp"
14 #include "src/surf/network_interface.hpp"
15
16 #include "src/kernel/routing/ClusterZone.hpp"
17 #include "src/kernel/routing/DijkstraZone.hpp"
18 #include "src/kernel/routing/DragonflyZone.hpp"
19 #include "src/kernel/routing/EmptyZone.hpp"
20 #include "src/kernel/routing/FatTreeZone.hpp"
21 #include "src/kernel/routing/FloydZone.hpp"
22 #include "src/kernel/routing/FullZone.hpp"
23 #include "src/kernel/routing/NetPoint.hpp"
24 #include "src/kernel/routing/NetZoneImpl.hpp"
25 #include "src/kernel/routing/TorusZone.hpp"
26 #include "src/kernel/routing/VivaldiZone.hpp"
27 #include <string>
28 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
29
30 XBT_PRIVATE std::vector<s_mount_t> mount_list;
31
32 namespace simgrid {
33 namespace surf {
34
35 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
36
37 }
38 }
39
40 static int surf_parse_models_setup_already_called = 0;
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 }
52
53 /** Module management function: frees all internal data structures */
54 void sg_platf_exit() {
55   simgrid::surf::on_cluster.disconnect_all_slots();
56   simgrid::s4u::onPlatformCreated.disconnect_all_slots();
57
58   /* make sure that we will reinit the models while loading the platf once reinited */
59   surf_parse_models_setup_already_called = 0;
60   surf_parse_lex_destroy();
61 }
62
63 /** @brief Add an host to the current AS */
64 void sg_platf_new_host(sg_platf_host_cbarg_t args)
65 {
66   std::unordered_map<std::string, std::string> props;
67   if (args->properties) {
68     xbt_dict_cursor_t cursor=nullptr;
69     char *key;
70     char* data;
71     xbt_dict_foreach (args->properties, cursor, key, data)
72       props[key] = data;
73     xbt_dict_free(&args->properties);
74   }
75
76   simgrid::s4u::Host* host =
77       routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount, &props);
78
79   host->pimpl_->storage_ = mount_list;
80   mount_list.clear();
81
82   /* Change from the defaults */
83   if (args->state_trace)
84     host->pimpl_cpu->setStateTrace(args->state_trace);
85   if (args->speed_trace)
86     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
87   if (args->pstate != 0)
88     host->pimpl_cpu->setPState(args->pstate);
89   if (args->coord && strcmp(args->coord, ""))
90     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netpoint, args->coord);
91
92   if (TRACE_is_enabled() && TRACE_needs_platform())
93     sg_instr_new_host(*host);
94 }
95
96 /** @brief Add a "router" to the network element list */
97 simgrid::kernel::routing::NetPoint* sg_platf_new_router(const char* name, const char* coords)
98 {
99   simgrid::kernel::routing::NetZoneImpl* current_routing = routing_get_current();
100
101   if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
102     current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::base;
103   xbt_assert(nullptr == simgrid::s4u::Engine::instance()->netpointByNameOrNull(name),
104              "Refusing to create a router named '%s': this name already describes a node.", name);
105
106   simgrid::kernel::routing::NetPoint* netpoint =
107       new simgrid::kernel::routing::NetPoint(name, simgrid::kernel::routing::NetPoint::Type::Router, current_routing);
108   XBT_DEBUG("Router '%s' has the id %d", name, netpoint->id());
109
110   if (coords && strcmp(coords, ""))
111     new simgrid::kernel::routing::vivaldi::Coords(netpoint, coords);
112
113   sg_instr_new_router(name);
114
115   return netpoint;
116 }
117
118 void sg_platf_new_link(LinkCreationArgs* link)
119 {
120   std::vector<std::string> names;
121
122   if (link->policy == SURF_LINK_FULLDUPLEX) {
123     names.push_back(link->id+ "_UP");
124     names.push_back(link->id+ "_DOWN");
125   } else {
126     names.push_back(link->id);
127   }
128   for (auto link_name : names) {
129     simgrid::surf::LinkImpl* l =
130         surf_network_model->createLink(link_name.c_str(), link->bandwidth, link->latency, link->policy);
131
132     if (link->properties) {
133       xbt_dict_cursor_t cursor = nullptr;
134       char* key;
135       char* data;
136       xbt_dict_foreach (link->properties, cursor, key, data)
137         l->setProperty(key, data);
138       xbt_dict_free(&link->properties);
139     }
140
141     if (link->latency_trace)
142       l->setLatencyTrace(link->latency_trace);
143     if (link->bandwidth_trace)
144       l->setBandwidthTrace(link->bandwidth_trace);
145     if (link->state_trace)
146       l->setStateTrace(link->state_trace);
147   }
148 }
149
150 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
151 {
152   using simgrid::kernel::routing::ClusterZone;
153   using simgrid::kernel::routing::DragonflyZone;
154   using simgrid::kernel::routing::FatTreeZone;
155   using simgrid::kernel::routing::TorusZone;
156
157   int rankId=0;
158
159
160   // What an inventive way of initializing the AS that I have as ancestor :-(
161   s_sg_platf_AS_cbarg_t AS;
162   AS.id = cluster->id;
163   switch (cluster->topology) {
164   case SURF_CLUSTER_TORUS:
165     AS.routing = A_surfxml_AS_routing_ClusterTorus;
166     break;
167   case SURF_CLUSTER_DRAGONFLY:
168     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
169     break;
170   case SURF_CLUSTER_FAT_TREE:
171     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
172     break;
173   default:
174     AS.routing = A_surfxml_AS_routing_Cluster;
175     break;
176   }
177   sg_platf_new_AS_begin(&AS);
178   simgrid::kernel::routing::ClusterZone* current_as = static_cast<ClusterZone*>(routing_get_current());
179   current_as->parse_specific_arguments(cluster);
180
181   if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
182     current_as->linkCountPerNode_++;
183     current_as->hasLoopback_ = 1;
184   }
185
186   if(cluster->limiter_link > 0){
187     current_as->linkCountPerNode_++;
188     current_as->hasLimiter_ = 1;
189   }
190
191   for (int i : *cluster->radicals) {
192     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
193     char * link_id = bprintf("%s_link_%d", cluster->id, i);
194
195     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speeds.front());
196
197     s_sg_platf_host_cbarg_t host;
198     memset(&host, 0, sizeof(host));
199     host.id = host_id;
200     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
201       xbt_dict_cursor_t cursor=nullptr;
202       char *key;
203       char* data;
204       host.properties = xbt_dict_new_homogeneous(free);
205
206       xbt_dict_foreach(cluster->properties,cursor,key,data) {
207         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
208       }
209     }
210
211     host.speed_per_pstate = cluster->speeds;
212     host.pstate = 0;
213     host.core_amount = cluster->core_amount;
214     host.coord = "";
215     sg_platf_new_host(&host);
216     XBT_DEBUG("</host>");
217
218     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
219
220     // All links are saved in a matrix;
221     // every row describes a single node; every node may have multiple links.
222     // the first column may store a link from x to x if p_has_loopback is set
223     // the second column may store a limiter link if p_has_limiter is set
224     // other columns are to store one or more link for the node
225
226     //add a loopback link
227     simgrid::surf::LinkImpl* linkUp   = nullptr;
228     simgrid::surf::LinkImpl* linkDown = nullptr;
229     if(cluster->loopback_bw > 0 || cluster->loopback_lat > 0){
230       char *tmp_link = bprintf("%s_loopback", link_id);
231       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
232
233       LinkCreationArgs link;
234       link.id        = tmp_link;
235       link.bandwidth = cluster->loopback_bw;
236       link.latency   = cluster->loopback_lat;
237       link.policy    = SURF_LINK_FATPIPE;
238       sg_platf_new_link(&link);
239       linkUp   = simgrid::surf::LinkImpl::byName(tmp_link);
240       linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
241       free(tmp_link);
242
243       auto as_cluster = static_cast<ClusterZone*>(current_as);
244       as_cluster->privateLinks_.insert({rankId * as_cluster->linkCountPerNode_, {linkUp, linkDown}});
245     }
246
247     //add a limiter link (shared link to account for maximal bandwidth of the node)
248     linkUp   = nullptr;
249     linkDown = nullptr;
250     if(cluster->limiter_link > 0){
251       char *tmp_link = bprintf("%s_limiter", link_id);
252       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
253
254       LinkCreationArgs link;
255       link.id = tmp_link;
256       link.bandwidth = cluster->limiter_link;
257       link.latency = 0;
258       link.policy = SURF_LINK_SHARED;
259       sg_platf_new_link(&link);
260       linkUp = linkDown = simgrid::surf::LinkImpl::byName(tmp_link);
261       free(tmp_link);
262       current_as->privateLinks_.insert(
263           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_, {linkUp, linkDown}});
264     }
265
266     //call the cluster function that adds the others links
267     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
268       static_cast<FatTreeZone*>(current_as)->addProcessingNode(i);
269     }
270     else {
271       current_as->create_links_for_node(cluster, i, rankId,
272           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
273     }
274     xbt_free(link_id);
275     xbt_free(host_id);
276     rankId++;
277   }
278
279   // Add a router.
280   XBT_DEBUG(" ");
281   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
282   if (!cluster->router_id || !strcmp(cluster->router_id, "")) {
283     char* newid         = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
284     current_as->router_ = sg_platf_new_router(newid, NULL);
285     free(newid);
286   } else {
287     current_as->router_ = sg_platf_new_router(cluster->router_id, NULL);
288   }
289
290   //Make the backbone
291   if ((cluster->bb_bw > 0) || (cluster->bb_lat > 0)) {
292
293     LinkCreationArgs link;
294     link.id        = std::string(cluster->id)+ "_backbone";
295     link.bandwidth = cluster->bb_bw;
296     link.latency   = cluster->bb_lat;
297     link.policy    = cluster->bb_sharing_policy;
298
299     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id.c_str(), cluster->bb_bw, cluster->bb_lat);
300     sg_platf_new_link(&link);
301
302     routing_cluster_add_backbone(simgrid::surf::LinkImpl::byName(link.id.c_str()));
303   }
304
305   XBT_DEBUG("</AS>");
306   sg_platf_new_AS_seal();
307
308   simgrid::surf::on_cluster(cluster);
309   delete cluster->radicals;
310 }
311
312 void routing_cluster_add_backbone(simgrid::surf::LinkImpl* bb)
313 {
314   simgrid::kernel::routing::ClusterZone* cluster =
315       dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
316
317   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
318   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
319
320   cluster->backbone_ = bb;
321   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
322 }
323
324 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
325 {
326   for (int radical : *cabinet->radicals) {
327     std::string hostname = std::string(cabinet->prefix) + std::to_string(radical) + std::string(cabinet->suffix);
328     s_sg_platf_host_cbarg_t host;
329     memset(&host, 0, sizeof(host));
330     host.pstate           = 0;
331     host.core_amount      = 1;
332     host.id               = hostname.c_str();
333     host.speed_per_pstate.push_back(cabinet->speed);
334     sg_platf_new_host(&host);
335
336     LinkCreationArgs link;
337     link.policy    = SURF_LINK_FULLDUPLEX;
338     link.latency   = cabinet->lat;
339     link.bandwidth = cabinet->bw;
340     link.id        = "link_" + hostname;
341     sg_platf_new_link(&link);
342
343     s_sg_platf_host_link_cbarg_t host_link;
344     memset(&host_link, 0, sizeof(host_link));
345     host_link.id        = hostname.c_str();
346     host_link.link_up   = bprintf("link_%s_UP",hostname.c_str());
347     host_link.link_down = bprintf("link_%s_DOWN",hostname.c_str());
348     sg_platf_new_hostlink(&host_link);
349     free((char*)host_link.link_up);
350     free((char*)host_link.link_down);
351   }
352   delete cabinet->radicals;
353 }
354
355 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
356 {
357   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
358                "Refusing to add a second storage named \"%s\"", storage->id);
359
360   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
361   xbt_assert(stype,"No storage type '%s'", storage->type_id);
362
363   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
364       storage->id,
365       storage->type_id,
366       storage->content);
367
368   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
369
370   // if storage content is not specified use the content of storage_type if any
371   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
372     storage->content = ((storage_type_t) stype)->content;
373     storage->content_type = ((storage_type_t) stype)->content_type;
374     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
375         storage->id,((storage_type_t) stype)->content_type,
376         ((storage_type_t) stype)->type_id);
377   }
378
379   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
380       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
381       "\n\t\tproperties '%p''\n",
382       storage->id,
383       ((storage_type_t) stype)->model,
384       ((storage_type_t) stype)->type_id,
385       storage->content,
386       storage->content_type,
387     storage->properties);
388
389   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
390                                              storage->content_type, storage->attach);
391
392   if (storage->properties) {
393     xbt_dict_cursor_t cursor = nullptr;
394     char *key;
395     char* data;
396     xbt_dict_foreach (storage->properties, cursor, key, data)
397       s->setProperty(key, data);
398     xbt_dict_free(&storage->properties);
399   }
400 }
401 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
402
403   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
404                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
405
406   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
407   stype->model = xbt_strdup(storage_type->model);
408   stype->properties = storage_type->properties;
409   stype->content = xbt_strdup(storage_type->content);
410   stype->content_type = xbt_strdup(storage_type->content_type);
411   stype->type_id = xbt_strdup(storage_type->id);
412   stype->size = storage_type->size;
413   stype->model_properties = storage_type->model_properties;
414
415   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
416       "content '%s', and content_type '%s'",
417       stype->type_id,
418       stype->model,
419       storage_type->content,
420       storage_type->content_type);
421
422   xbt_lib_set(storage_type_lib,
423       stype->type_id,
424       ROUTING_STORAGE_TYPE_LEVEL,
425       (void *) stype);
426 }
427
428 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
429   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
430       "Cannot mount non-existent disk \"%s\"", mount->storageId);
431
432   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
433
434   s_mount_t mnt;
435   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
436   mnt.name = xbt_strdup(mount->name);
437
438   if (mount_list.empty())
439     XBT_DEBUG("Create a Mount list for %s", A_surfxml_host_id);
440   mount_list.push_back(mnt);
441 }
442
443 void sg_platf_new_route(sg_platf_route_cbarg_t route)
444 {
445   routing_get_current()->addRoute(route);
446 }
447
448 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
449 {
450   routing_get_current()->addBypassRoute(bypassRoute);
451 }
452
453 void sg_platf_new_process(sg_platf_process_cbarg_t process)
454 {
455   sg_host_t host = sg_host_by_name(process->host);
456   if (!host) {
457     // The requested host does not exist. Do a nice message to the user
458     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
459     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
460     free(tmp);
461     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
462     simgrid::s4u::Host* host;
463     unsigned int cursor;
464     xbt_dynar_foreach(all_hosts,cursor, host) {
465       xbt_strbuff_append(msg, host->cname());
466       xbt_strbuff_append(msg,"', '");
467       if (msg->used > 1024) {
468         msg->data[msg->used-3]='\0';
469         msg->used -= 3;
470
471         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
472         break;
473       }
474     }
475     msg->data[msg->used-3]='\0';
476     xbt_die("%s", msg->data);
477   }
478   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
479   xbt_assert(factory, "Function '%s' unknown", process->function);
480
481   double start_time = process->start_time;
482   double kill_time  = process->kill_time;
483   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
484
485   std::vector<std::string> args(process->argv, process->argv + process->argc);
486   std::function<void()> code = factory(std::move(args));
487
488   smx_process_arg_t arg = nullptr;
489
490   arg = new simgrid::simix::ProcessArg();
491   arg->name = std::string(process->argv[0]);
492   arg->code = code;
493   arg->data = nullptr;
494   arg->host = host;
495   arg->kill_time = kill_time;
496   arg->properties = current_property_set;
497
498   host->extension<simgrid::simix::Host>()->boot_processes.push_back(arg);
499
500   if (start_time > SIMIX_get_clock()) {
501
502     arg = new simgrid::simix::ProcessArg();
503     arg->name = std::string(process->argv[0]);
504     arg->code = std::move(code);
505     arg->data = nullptr;
506     arg->host = host;
507     arg->kill_time = kill_time;
508     arg->properties = current_property_set;
509
510     XBT_DEBUG("Process %s@%s will be started at time %f", arg->name.c_str(), arg->host->cname(), start_time);
511     SIMIX_timer_set(start_time, [arg, auto_restart]() {
512       smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(arg->code), arg->data,
513                                                                 arg->host, arg->properties, nullptr);
514       if (arg->kill_time >= 0)
515         simcall_process_set_kill_time(actor, arg->kill_time);
516       if (auto_restart)
517         SIMIX_process_auto_restart_set(actor, auto_restart);
518       delete arg;
519     });
520   } else {                      // start_time <= SIMIX_get_clock()
521     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
522
523     smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), std::move(code), nullptr, host,
524                                                               current_property_set, nullptr);
525
526     /* The actor creation will fail if the host is currently dead, but that's fine */
527     if (actor != nullptr) {
528       if (arg->kill_time >= 0)
529         simcall_process_set_kill_time(actor, arg->kill_time);
530       if (auto_restart)
531         SIMIX_process_auto_restart_set(actor, auto_restart);
532     }
533   }
534   current_property_set = nullptr;
535 }
536
537 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
538 {
539   simgrid::kernel::routing::VivaldiZone* as = dynamic_cast<simgrid::kernel::routing::VivaldiZone*>(current_routing);
540   xbt_assert(as, "<peer> tag can only be used in Vivaldi netzones.");
541
542   std::vector<double> speedPerPstate;
543   speedPerPstate.push_back(peer->speed);
544   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1, nullptr);
545
546   as->setPeerLink(host->pimpl_netpoint, peer->bw_in, peer->bw_out, peer->coord);
547
548   /* Change from the defaults */
549   if (peer->state_trace)
550     host->pimpl_cpu->setStateTrace(peer->state_trace);
551   if (peer->speed_trace)
552     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
553 }
554
555 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
556
557 void sg_platf_end() {
558   simgrid::s4u::onPlatformCreated();
559 }
560
561 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
562 static void surf_config_models_setup()
563 {
564   const char* host_model_name    = xbt_cfg_get_string("host/model");
565   const char* network_model_name = xbt_cfg_get_string("network/model");
566   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
567   const char* storage_model_name = xbt_cfg_get_string("storage/model");
568
569   /* The compound host model is needed when using non-default net/cpu models */
570   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
571       xbt_cfg_is_default_value("host/model")) {
572     host_model_name = "compound";
573     xbt_cfg_set_string("host/model", host_model_name);
574   }
575
576   XBT_DEBUG("host model: %s", host_model_name);
577   if (!strcmp(host_model_name, "compound")) {
578     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
579     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
580
581     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
582     surf_cpu_model_description[cpu_id].model_init_preparse();
583
584     int network_id = find_model_description(surf_network_model_description, network_model_name);
585     surf_network_model_description[network_id].model_init_preparse();
586   }
587
588   XBT_DEBUG("Call host_model_init");
589   int host_id = find_model_description(surf_host_model_description, host_model_name);
590   surf_host_model_description[host_id].model_init_preparse();
591
592   XBT_DEBUG("Call vm_model_init");
593   surf_vm_model_init_HL13();
594
595   XBT_DEBUG("Call storage_model_init");
596   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
597   surf_storage_model_description[storage_id].model_init_preparse();
598 }
599
600 /**
601  * \brief Add an AS to the platform
602  *
603  * Add a new autonomous system to the platform. Any elements (such as host,
604  * router or sub-AS) added after this call and before the corresponding call
605  * to sg_platf_new_AS_seal() will be added to this AS.
606  *
607  * Once this function was called, the configuration concerning the used
608  * models cannot be changed anymore.
609  *
610  * @param AS the parameters defining the AS to build.
611  */
612 simgrid::s4u::NetZone* sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
613 {
614   if (!surf_parse_models_setup_already_called) {
615     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
616      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
617      *
618      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
619      * (FIXME: check it out by creating a file beginning with one of these tags)
620      * but cluster and peer create ASes internally, so putting the code in there is ok.
621      */
622     surf_parse_models_setup_already_called = 1;
623     surf_config_models_setup();
624   }
625
626   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
627                             * any further config now that we created some real content */
628
629
630   /* search the routing model */
631   simgrid::kernel::routing::NetZoneImpl* new_as = nullptr;
632   switch(AS->routing){
633     case A_surfxml_AS_routing_Cluster:
634       new_as = new simgrid::kernel::routing::ClusterZone(current_routing, AS->id);
635       break;
636     case A_surfxml_AS_routing_ClusterDragonfly:
637       new_as = new simgrid::kernel::routing::DragonflyZone(current_routing, AS->id);
638       break;
639     case A_surfxml_AS_routing_ClusterTorus:
640       new_as = new simgrid::kernel::routing::TorusZone(current_routing, AS->id);
641       break;
642     case A_surfxml_AS_routing_ClusterFatTree:
643       new_as = new simgrid::kernel::routing::FatTreeZone(current_routing, AS->id);
644       break;
645     case A_surfxml_AS_routing_Dijkstra:
646       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 0);
647       break;
648     case A_surfxml_AS_routing_DijkstraCache:
649       new_as = new simgrid::kernel::routing::DijkstraZone(current_routing, AS->id, 1);
650       break;
651     case A_surfxml_AS_routing_Floyd:
652       new_as = new simgrid::kernel::routing::FloydZone(current_routing, AS->id);
653       break;
654     case A_surfxml_AS_routing_Full:
655       new_as = new simgrid::kernel::routing::FullZone(current_routing, AS->id);
656       break;
657     case A_surfxml_AS_routing_None:
658       new_as = new simgrid::kernel::routing::EmptyZone(current_routing, AS->id);
659       break;
660     case A_surfxml_AS_routing_Vivaldi:
661       new_as = new simgrid::kernel::routing::VivaldiZone(current_routing, AS->id);
662       break;
663     default:
664       xbt_die("Not a valid model!");
665       break;
666   }
667
668   if (current_routing == nullptr) { /* it is the first one */
669     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->netRoot_ == nullptr,
670                "All defined components must belong to a AS");
671     simgrid::s4u::Engine::instance()->pimpl->netRoot_ = new_as;
672
673   } else {
674     /* set the father behavior */
675     if (current_routing->hierarchy_ == simgrid::kernel::routing::NetZoneImpl::RoutingMode::unset)
676       current_routing->hierarchy_ = simgrid::kernel::routing::NetZoneImpl::RoutingMode::recursive;
677     /* add to the sons dictionary */
678     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
679   }
680
681   /* set the new current component of the tree */
682   current_routing = new_as;
683
684   if (TRACE_is_enabled())
685     sg_instr_AS_begin(AS);
686
687   return new_as;
688 }
689
690 /**
691  * \brief Specify that the description of the current AS is finished
692  *
693  * Once you've declared all the content of your AS, you have to seal
694  * it with this call. Your AS is not usable until you call this function.
695  */
696 void sg_platf_new_AS_seal()
697 {
698   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
699   current_routing->seal();
700   current_routing = static_cast<simgrid::kernel::routing::NetZoneImpl*>(current_routing->father());
701
702   if (TRACE_is_enabled())
703     sg_instr_AS_end();
704 }
705
706 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
707 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
708 {
709   simgrid::kernel::routing::NetPoint* netpoint = sg_host_by_name(hostlink->id)->pimpl_netpoint;
710   xbt_assert(netpoint, "Host '%s' not found!", hostlink->id);
711   xbt_assert(dynamic_cast<simgrid::kernel::routing::ClusterZone*>(current_routing),
712              "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
713
714   simgrid::surf::LinkImpl* linkUp   = simgrid::surf::LinkImpl::byName(hostlink->link_up);
715   simgrid::surf::LinkImpl* linkDown = simgrid::surf::LinkImpl::byName(hostlink->link_down);
716
717   xbt_assert(linkUp, "Link '%s' not found!", hostlink->link_up);
718   xbt_assert(linkDown, "Link '%s' not found!", hostlink->link_down);
719
720   auto as_cluster = static_cast<simgrid::kernel::routing::ClusterZone*>(current_routing);
721
722   if (as_cluster->privateLinks_.find(netpoint->id()) != as_cluster->privateLinks_.end())
723     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
724
725   XBT_DEBUG("Push Host_link for host '%s' to position %d", netpoint->cname(), netpoint->id());
726   as_cluster->privateLinks_.insert({netpoint->id(), {linkUp, linkDown}});
727 }
728
729 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
730 {
731   tmgr_trace_t tmgr_trace;
732   if (trace->file && strcmp(trace->file, "") != 0) {
733     tmgr_trace = tmgr_trace_new_from_file(trace->file);
734   } else {
735     xbt_assert(strcmp(trace->pc_data, ""),
736         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
737     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
738   }
739   xbt_dict_set(traces_set_list, trace->id, static_cast<void*>(tmgr_trace), nullptr);
740 }