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[simgrid.git] / src / surf / sg_platf.cpp
1 /* Copyright (c) 2006-2014. The SimGrid Team.
2  * All rights reserved.                                                     */
3
4 /* This program is free software; you can redistribute it and/or modify it
5  * under the terms of the license (GNU LGPL) which comes with this package. */
6
7 #include "xbt/misc.h"
8 #include "xbt/log.h"
9 #include "xbt/str.h"
10 #include "xbt/dict.h"
11 #include "xbt/RngStream.h"
12 #include <xbt/functional.hpp>
13 #include <xbt/signal.hpp>
14 #include "src/surf/HostImpl.hpp"
15 #include "surf/surf.h"
16
17 #include "simgrid/s4u/engine.hpp"
18 #include "src/kernel/EngineImpl.hpp"
19 #include "src/simix/smx_private.h"
20
21 #include "src/include/simgrid/sg_config.h"
22 #include "src/surf/xml/platf_private.hpp"
23
24 #include "src/surf/HostImpl.hpp"
25 #include "src/surf/cpu_interface.hpp"
26 #include "src/surf/network_interface.hpp"
27
28 #include "src/kernel/routing/AsCluster.hpp"
29 #include "src/kernel/routing/AsClusterDragonfly.hpp"
30 #include "src/kernel/routing/AsClusterFatTree.hpp"
31 #include "src/kernel/routing/AsClusterTorus.hpp"
32 #include "src/kernel/routing/AsDijkstra.hpp"
33 #include "src/kernel/routing/AsFloyd.hpp"
34 #include "src/kernel/routing/AsFull.hpp"
35 #include "src/kernel/routing/AsImpl.hpp"
36 #include "src/kernel/routing/AsNone.hpp"
37 #include "src/kernel/routing/AsVivaldi.hpp"
38 #include "src/kernel/routing/NetCard.hpp"
39
40 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
41
42 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
43
44 namespace simgrid {
45 namespace surf {
46
47 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
48 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
49 simgrid::xbt::signal<void(void)> on_postparse;
50
51 }
52 }
53
54 static int surf_parse_models_setup_already_called = 0;
55
56 /** The current AS in the parsing */
57 static simgrid::kernel::routing::AsImpl *current_routing = nullptr;
58 static simgrid::kernel::routing::AsImpl *routing_get_current()
59 {
60   return current_routing;
61 }
62
63 /** Module management function: creates all internal data structures */
64 void sg_platf_init() {
65 }
66
67 /** Module management function: frees all internal data structures */
68 void sg_platf_exit() {
69   simgrid::surf::on_link.disconnect_all_slots();
70   simgrid::surf::on_cluster.disconnect_all_slots();
71   simgrid::surf::on_postparse.disconnect_all_slots();
72
73   /* make sure that we will reinit the models while loading the platf once reinited */
74   surf_parse_models_setup_already_called = 0;
75   surf_parse_lex_destroy();
76 }
77
78 /** @brief Add an host to the current AS */
79 void sg_platf_new_host(sg_platf_host_cbarg_t args)
80 {
81   simgrid::s4u::Host* host = routing_get_current()->createHost(args->id, &args->speed_per_pstate, args->core_amount);
82
83   new simgrid::surf::HostImpl(host, mount_list);
84   xbt_lib_set(storage_lib, args->id, ROUTING_STORAGE_HOST_LEVEL, static_cast<void*>(mount_list));
85   mount_list = nullptr;
86
87   if (args->properties) {
88     xbt_dict_cursor_t cursor=nullptr;
89     char *key,*data;
90     xbt_dict_foreach (args->properties, cursor, key, data)
91       host->setProperty(key, data);
92     xbt_dict_free(&args->properties);
93   }
94
95   /* Change from the defaults */
96   if (args->state_trace)
97     host->pimpl_cpu->setStateTrace(args->state_trace);
98   if (args->speed_trace)
99     host->pimpl_cpu->setSpeedTrace(args->speed_trace);
100   if (args->pstate != 0)
101     host->pimpl_cpu->setPState(args->pstate);
102   if (args->coord && strcmp(args->coord, ""))
103     new simgrid::kernel::routing::vivaldi::Coords(host->pimpl_netcard, args->coord);
104
105   simgrid::s4u::Host::onCreation(*host);
106
107   if (TRACE_is_enabled() && TRACE_needs_platform())
108     sg_instr_new_host(*host);
109 }
110
111 /** @brief Add a "router" to the network element list */
112 void sg_platf_new_router(sg_platf_router_cbarg_t router)
113 {
114   simgrid::kernel::routing::AsImpl* current_routing = routing_get_current();
115
116   if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
117     current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::base;
118   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
119              "Refusing to create a router named '%s': this name already describes a node.", router->id);
120
121   simgrid::kernel::routing::NetCard* netcard =
122     new simgrid::kernel::routing::NetCard(router->id, simgrid::kernel::routing::NetCard::Type::Router, current_routing);
123   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
124   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
125
126   if (router->coord && strcmp(router->coord, ""))
127     new simgrid::kernel::routing::vivaldi::Coords(netcard, router->coord);
128
129   auto cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
130   if(cluster != nullptr)
131     cluster->router_ = static_cast<simgrid::kernel::routing::NetCard*>(xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL));
132
133   if (TRACE_is_enabled() && TRACE_needs_platform())
134     sg_instr_new_router(router);
135 }
136
137 void sg_platf_new_link(sg_platf_link_cbarg_t link){
138   std::vector<char*> names;
139
140   if (link->policy == SURF_LINK_FULLDUPLEX) {
141     names.push_back(bprintf("%s_UP", link->id));
142     names.push_back(bprintf("%s_DOWN", link->id));
143   } else {
144     names.push_back(xbt_strdup(link->id));
145   }
146   for (auto link_name : names) {
147     Link* l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy);
148
149     if (link->properties) {
150       xbt_dict_cursor_t cursor = nullptr;
151       char *key, *data;
152       xbt_dict_foreach (link->properties, cursor, key, data)
153         l->setProperty(key, data);
154       xbt_dict_free(&link->properties);
155     }
156
157     if (link->latency_trace)
158       l->setLatencyTrace(link->latency_trace);
159     if (link->bandwidth_trace)
160       l->setBandwidthTrace(link->bandwidth_trace);
161     if (link->state_trace)
162       l->setStateTrace(link->state_trace);
163
164     xbt_free(link_name);
165   }
166
167   simgrid::surf::on_link(link);
168 }
169
170 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
171 {
172   using simgrid::kernel::routing::AsCluster;
173   using simgrid::kernel::routing::AsClusterDragonfly;
174   using simgrid::kernel::routing::AsClusterFatTree;
175   using simgrid::kernel::routing::AsClusterTorus;
176
177   int rankId=0;
178
179   s_sg_platf_link_cbarg_t link;
180
181   // What an inventive way of initializing the AS that I have as ancestor :-(
182   s_sg_platf_AS_cbarg_t AS;
183   AS.id = cluster->id;
184   switch (cluster->topology) {
185   case SURF_CLUSTER_TORUS:
186     AS.routing = A_surfxml_AS_routing_ClusterTorus;
187     break;
188   case SURF_CLUSTER_DRAGONFLY:
189     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
190     break;
191   case SURF_CLUSTER_FAT_TREE:
192     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
193     break;
194   default:
195     AS.routing = A_surfxml_AS_routing_Cluster;
196     break;
197   }
198   sg_platf_new_AS_begin(&AS);
199   simgrid::kernel::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
200   current_as->parse_specific_arguments(cluster);
201
202   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
203     current_as->linkCountPerNode_++;
204     current_as->hasLoopback_ = 1;
205   }
206
207   if(cluster->limiter_link!=0){
208     current_as->linkCountPerNode_++;
209     current_as->hasLimiter_ = 1;
210   }
211
212   for (int i : *cluster->radicals) {
213     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
214     char * link_id = bprintf("%s_link_%d", cluster->id, i);
215
216     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
217
218     s_sg_platf_host_cbarg_t host;
219     memset(&host, 0, sizeof(host));
220     host.id = host_id;
221     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
222       xbt_dict_cursor_t cursor=nullptr;
223       char *key,*data;
224       host.properties = xbt_dict_new_homogeneous(free);
225
226       xbt_dict_foreach(cluster->properties,cursor,key,data) {
227         xbt_dict_set(host.properties, key, xbt_strdup(data), nullptr);
228       }
229     }
230
231     host.speed_per_pstate.push_back(cluster->speed);
232     host.pstate = 0;
233     host.core_amount = cluster->core_amount;
234     host.coord = "";
235     sg_platf_new_host(&host);
236     XBT_DEBUG("</host>");
237
238     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
239
240     s_surf_parsing_link_up_down_t info_lim;
241     s_surf_parsing_link_up_down_t info_loop;
242     // All links are saved in a matrix;
243     // every row describes a single node; every node may have multiple links.
244     // the first column may store a link from x to x if p_has_loopback is set
245     // the second column may store a limiter link if p_has_limiter is set
246     // other columns are to store one or more link for the node
247
248     //add a loopback link
249     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
250       char *tmp_link = bprintf("%s_loopback", link_id);
251       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
252
253       memset(&link, 0, sizeof(link));
254       link.id        = tmp_link;
255       link.bandwidth = cluster->loopback_bw;
256       link.latency   = cluster->loopback_lat;
257       link.policy    = SURF_LINK_FATPIPE;
258       sg_platf_new_link(&link);
259       info_loop.linkUp = Link::byName(tmp_link);
260       info_loop.linkDown = Link::byName(tmp_link);
261       free(tmp_link);
262
263       auto as_cluster = static_cast<AsCluster*>(current_as);
264       as_cluster->privateLinks_.insert({rankId*as_cluster->linkCountPerNode_, info_loop});
265     }
266
267     //add a limiter link (shared link to account for maximal bandwidth of the node)
268     if(cluster->limiter_link!=0){
269       char *tmp_link = bprintf("%s_limiter", link_id);
270       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
271
272       memset(&link, 0, sizeof(link));
273       link.id = tmp_link;
274       link.bandwidth = cluster->limiter_link;
275       link.latency = 0;
276       link.policy = SURF_LINK_SHARED;
277       sg_platf_new_link(&link);
278       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
279       free(tmp_link);
280       current_as->privateLinks_.insert(
281           {rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , info_lim});
282     }
283
284     //call the cluster function that adds the others links
285     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
286       static_cast<AsClusterFatTree*>(current_as)->addProcessingNode(i);
287     }
288     else {
289       current_as->create_links_for_node(cluster, i, rankId,
290           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
291     }
292     xbt_free(link_id);
293     xbt_free(host_id);
294     rankId++;
295   }
296
297   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
298   // and it's very useful to connect clusters together
299   XBT_DEBUG(" ");
300   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
301   char *newid = nullptr;
302   s_sg_platf_router_cbarg_t router;
303   memset(&router, 0, sizeof(router));
304   router.id = cluster->router_id;
305   if (!router.id || !strcmp(router.id, ""))
306     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
307   sg_platf_new_router(&router);
308   current_as->router_ = (simgrid::kernel::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
309   free(newid);
310
311   //Make the backbone
312   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
313
314     memset(&link, 0, sizeof(link));
315     link.id        = bprintf("%s_backbone", cluster->id);
316     link.bandwidth = cluster->bb_bw;
317     link.latency   = cluster->bb_lat;
318     link.policy    = cluster->bb_sharing_policy;
319
320     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
321     sg_platf_new_link(&link);
322
323     routing_cluster_add_backbone(Link::byName(link.id));
324     free((char*)link.id);
325   }
326
327   XBT_DEBUG("</AS>");
328   sg_platf_new_AS_seal();
329
330   simgrid::surf::on_cluster(cluster);
331   delete cluster->radicals;
332 }
333 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
334   simgrid::kernel::routing::AsCluster *cluster = dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
335
336   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
337   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
338
339   cluster->backbone_ = bb;
340   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
341 }
342
343 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
344 {
345   for (int radical : *cabinet->radicals) {
346     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
347     s_sg_platf_host_cbarg_t host;
348     memset(&host, 0, sizeof(host));
349     host.pstate           = 0;
350     host.core_amount      = 1;
351     host.id               = hostname;
352     host.speed_per_pstate.push_back(cabinet->speed);
353     sg_platf_new_host(&host);
354
355     s_sg_platf_link_cbarg_t link;
356     memset(&link, 0, sizeof(link));
357     link.policy    = SURF_LINK_FULLDUPLEX;
358     link.latency   = cabinet->lat;
359     link.bandwidth = cabinet->bw;
360     link.id        = bprintf("link_%s",hostname);
361     sg_platf_new_link(&link);
362     free((char*)link.id);
363
364     s_sg_platf_host_link_cbarg_t host_link;
365     memset(&host_link, 0, sizeof(host_link));
366     host_link.id        = hostname;
367     host_link.link_up   = bprintf("link_%s_UP",hostname);
368     host_link.link_down = bprintf("link_%s_DOWN",hostname);
369     sg_platf_new_hostlink(&host_link);
370     free((char*)host_link.link_up);
371     free((char*)host_link.link_down);
372
373     free(hostname);
374   }
375   delete cabinet->radicals;
376 }
377
378 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
379 {
380   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
381                "Refusing to add a second storage named \"%s\"", storage->id);
382
383   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
384   xbt_assert(stype,"No storage type '%s'", storage->type_id);
385
386   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
387       storage->id,
388       storage->type_id,
389       storage->content);
390
391   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
392
393   // if storage content is not specified use the content of storage_type if any
394   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
395     storage->content = ((storage_type_t) stype)->content;
396     storage->content_type = ((storage_type_t) stype)->content_type;
397     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
398         storage->id,((storage_type_t) stype)->content_type,
399         ((storage_type_t) stype)->type_id);
400   }
401
402   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
403       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
404       "\n\t\tproperties '%p''\n",
405       storage->id,
406       ((storage_type_t) stype)->model,
407       ((storage_type_t) stype)->type_id,
408       storage->content,
409       storage->content_type,
410     storage->properties);
411
412   auto s = surf_storage_model->createStorage(storage->id, ((storage_type_t)stype)->type_id, storage->content,
413                                              storage->content_type, storage->attach);
414
415   if (storage->properties) {
416     xbt_dict_cursor_t cursor = nullptr;
417     char *key, *data;
418     xbt_dict_foreach (storage->properties, cursor, key, data)
419       s->setProperty(key, data);
420     xbt_dict_free(&storage->properties);
421   }
422 }
423 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
424
425   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
426                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
427
428   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
429   stype->model = xbt_strdup(storage_type->model);
430   stype->properties = storage_type->properties;
431   stype->content = xbt_strdup(storage_type->content);
432   stype->content_type = xbt_strdup(storage_type->content_type);
433   stype->type_id = xbt_strdup(storage_type->id);
434   stype->size = storage_type->size;
435   stype->model_properties = storage_type->model_properties;
436
437   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
438       "content '%s', and content_type '%s'",
439       stype->type_id,
440       stype->model,
441       storage_type->content,
442       storage_type->content_type);
443
444   xbt_lib_set(storage_type_lib,
445       stype->type_id,
446       ROUTING_STORAGE_TYPE_LEVEL,
447       (void *) stype);
448 }
449
450 static void mount_free(void *p)
451 {
452   mount_t mnt = (mount_t) p;
453   xbt_free(mnt->name);
454 }
455
456 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
457   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
458       "Cannot mount non-existent disk \"%s\"", mount->storageId);
459
460   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
461
462   s_mount_t mnt;
463   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
464   mnt.name = xbt_strdup(mount->name);
465
466   if(!mount_list){
467     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
468     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
469   }
470   xbt_dynar_push(mount_list, &mnt);
471 }
472
473 void sg_platf_new_route(sg_platf_route_cbarg_t route)
474 {
475   routing_get_current()->addRoute(route);
476 }
477
478 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
479 {
480   routing_get_current()->addBypassRoute(bypassRoute);
481 }
482
483 void sg_platf_new_process(sg_platf_process_cbarg_t process)
484 {
485   sg_host_t host = sg_host_by_name(process->host);
486   if (!host) {
487     // The requested host does not exist. Do a nice message to the user
488     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
489     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
490     free(tmp);
491     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
492     simgrid::s4u::Host* host;
493     unsigned int cursor;
494     xbt_dynar_foreach(all_hosts,cursor, host) {
495       xbt_strbuff_append(msg,host->name().c_str());
496       xbt_strbuff_append(msg,"', '");
497       if (msg->used > 1024) {
498         msg->data[msg->used-3]='\0';
499         msg->used -= 3;
500
501         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
502         break;
503       }
504     }
505     msg->data[msg->used-3]='\0';
506     xbt_die("%s", msg->data);
507   }
508   simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(process->function);
509   xbt_assert(factory, "Function '%s' unknown", process->function);
510
511   double start_time = process->start_time;
512   double kill_time  = process->kill_time;
513   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
514
515   std::vector<std::string> args(process->argv, process->argv + process->argc);
516   std::function<void()> code = factory(std::move(args));
517
518   smx_process_arg_t arg = nullptr;
519   smx_actor_t process_created = nullptr;
520
521   arg = new simgrid::simix::ProcessArg();
522   arg->name = std::string(process->argv[0]);
523   arg->code = code;
524   arg->data = nullptr;
525   arg->host = host;
526   arg->kill_time = kill_time;
527   arg->properties = current_property_set;
528
529   sg_host_simix(host)->boot_processes.push_back(arg);
530
531   if (start_time > SIMIX_get_clock()) {
532
533     arg = new simgrid::simix::ProcessArg();
534     arg->name = std::string(process->argv[0]);
535     arg->code = std::move(code);
536     arg->data = nullptr;
537     arg->host = host;
538     arg->kill_time = kill_time;
539     arg->properties = current_property_set;
540
541     XBT_DEBUG("Process %s@%s will be started at time %f",
542       arg->name.c_str(), arg->host->name().c_str(), start_time);
543     SIMIX_timer_set(start_time, [=]() {
544       simix_global->create_process_function(
545                                             arg->name.c_str(),
546                                             std::move(arg->code),
547                                             arg->data,
548                                             arg->host,
549                                             arg->kill_time,
550                                             arg->properties,
551                                             arg->auto_restart,
552                                             nullptr);
553       delete arg;
554     });
555   } else {                      // start_time <= SIMIX_get_clock()
556     XBT_DEBUG("Starting Process %s(%s) right now", arg->name.c_str(), host->cname());
557
558     process_created = simix_global->create_process_function(
559         arg->name.c_str(), std::move(code), nullptr,
560         host, kill_time,
561         current_property_set, auto_restart, nullptr);
562
563     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
564     if (!process_created) {
565       return;
566     }
567   }
568   current_property_set = nullptr;
569 }
570
571 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
572 {
573   using simgrid::kernel::routing::AsVivaldi;
574
575   AsVivaldi* as = dynamic_cast<simgrid::kernel::routing::AsVivaldi*>(current_routing);
576   xbt_assert(as, "<peer> tag can only be used in Vivaldi ASes");
577
578   std::vector<double> speedPerPstate;
579   speedPerPstate.push_back(peer->speed);
580   simgrid::s4u::Host* host = as->createHost(peer->id, &speedPerPstate, 1);
581   as->setPeerLink(host->pimpl_netcard, peer->bw_in, peer->bw_out, peer->lat, peer->coord);
582   simgrid::s4u::Host::onCreation(*host);
583
584   /* Change from the defaults */
585   if (peer->state_trace)
586     host->pimpl_cpu->setStateTrace(peer->state_trace);
587   if (peer->speed_trace)
588     host->pimpl_cpu->setSpeedTrace(peer->speed_trace);
589 }
590
591 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
592
593 void sg_platf_end() {
594   simgrid::surf::on_postparse();
595 }
596
597 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
598 static void surf_config_models_setup()
599 {
600   const char* host_model_name    = xbt_cfg_get_string("host/model");
601   const char* network_model_name = xbt_cfg_get_string("network/model");
602   const char* cpu_model_name     = xbt_cfg_get_string("cpu/model");
603   const char* storage_model_name = xbt_cfg_get_string("storage/model");
604
605   /* The compound host model is needed when using non-default net/cpu models */
606   if ((!xbt_cfg_is_default_value("network/model") || !xbt_cfg_is_default_value("cpu/model")) &&
607       xbt_cfg_is_default_value("host/model")) {
608     host_model_name = "compound";
609     xbt_cfg_set_string("host/model", host_model_name);
610   }
611
612   XBT_DEBUG("host model: %s", host_model_name);
613   if (!strcmp(host_model_name, "compound")) {
614     xbt_assert(cpu_model_name, "Set a cpu model to use with the 'compound' host model");
615     xbt_assert(network_model_name, "Set a network model to use with the 'compound' host model");
616
617     int cpu_id = find_model_description(surf_cpu_model_description, cpu_model_name);
618     surf_cpu_model_description[cpu_id].model_init_preparse();
619
620     int network_id = find_model_description(surf_network_model_description, network_model_name);
621     surf_network_model_description[network_id].model_init_preparse();
622   }
623
624   XBT_DEBUG("Call host_model_init");
625   int host_id = find_model_description(surf_host_model_description, host_model_name);
626   surf_host_model_description[host_id].model_init_preparse();
627
628   XBT_DEBUG("Call vm_model_init");
629   surf_vm_model_init_HL13();
630
631   XBT_DEBUG("Call storage_model_init");
632   int storage_id = find_model_description(surf_storage_model_description, storage_model_name);
633   surf_storage_model_description[storage_id].model_init_preparse();
634 }
635
636 /**
637  * \brief Add an AS to the platform
638  *
639  * Add a new autonomous system to the platform. Any elements (such as host,
640  * router or sub-AS) added after this call and before the corresponding call
641  * to sg_platf_new_AS_seal() will be added to this AS.
642  *
643  * Once this function was called, the configuration concerning the used
644  * models cannot be changed anymore.
645  *
646  * @param AS the parameters defining the AS to build.
647  */
648 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
649 {
650   if (!surf_parse_models_setup_already_called) {
651     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
652      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
653      *
654      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
655      * (FIXME: check it out by creating a file beginning with one of these tags)
656      * but cluster and peer create ASes internally, so putting the code in there is ok.
657      */
658     surf_parse_models_setup_already_called = 1;
659     surf_config_models_setup();
660   }
661
662   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
663                             * any further config now that we created some real content */
664
665
666   /* search the routing model */
667   simgrid::kernel::routing::AsImpl *new_as = nullptr;
668   switch(AS->routing){
669     case A_surfxml_AS_routing_Cluster:
670       new_as = new simgrid::kernel::routing::AsCluster(current_routing, AS->id);
671       break;
672     case A_surfxml_AS_routing_ClusterDragonfly:
673       new_as = new simgrid::kernel::routing::AsClusterDragonfly(current_routing, AS->id);
674       break;
675     case A_surfxml_AS_routing_ClusterTorus:
676       new_as = new simgrid::kernel::routing::AsClusterTorus(current_routing, AS->id);
677       break;
678     case A_surfxml_AS_routing_ClusterFatTree:
679       new_as = new simgrid::kernel::routing::AsClusterFatTree(current_routing, AS->id);
680       break;
681     case A_surfxml_AS_routing_Dijkstra:
682       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 0);
683       break;
684     case A_surfxml_AS_routing_DijkstraCache:
685       new_as = new simgrid::kernel::routing::AsDijkstra(current_routing, AS->id, 1);
686       break;
687     case A_surfxml_AS_routing_Floyd:
688       new_as = new simgrid::kernel::routing::AsFloyd(current_routing, AS->id);
689       break;
690     case A_surfxml_AS_routing_Full:
691       new_as = new simgrid::kernel::routing::AsFull(current_routing, AS->id);
692       break;
693     case A_surfxml_AS_routing_None:
694       new_as = new simgrid::kernel::routing::AsNone(current_routing, AS->id);
695       break;
696     case A_surfxml_AS_routing_Vivaldi:
697       new_as = new simgrid::kernel::routing::AsVivaldi(current_routing, AS->id);
698       break;
699     default:
700       xbt_die("Not a valid model!");
701       break;
702   }
703
704   if (current_routing == nullptr) { /* it is the first one */
705     xbt_assert(simgrid::s4u::Engine::instance()->pimpl->rootAs_ == nullptr,
706                "All defined components must belong to a AS");
707     simgrid::s4u::Engine::instance()->pimpl->rootAs_ = new_as;
708
709   } else {
710     /* set the father behavior */
711     if (current_routing->hierarchy_ == simgrid::kernel::routing::AsImpl::RoutingMode::unset)
712       current_routing->hierarchy_ = simgrid::kernel::routing::AsImpl::RoutingMode::recursive;
713     /* add to the sons dictionary */
714     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
715   }
716
717   /* set the new current component of the tree */
718   current_routing = new_as;
719
720   simgrid::kernel::routing::asCreatedCallbacks(new_as);
721   if (TRACE_is_enabled())
722     sg_instr_AS_begin(AS);
723
724   return new_as;
725 }
726
727 /**
728  * \brief Specify that the description of the current AS is finished
729  *
730  * Once you've declared all the content of your AS, you have to seal
731  * it with this call. Your AS is not usable until you call this function.
732  */
733 void sg_platf_new_AS_seal()
734 {
735   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
736   current_routing->seal();
737   current_routing = static_cast<simgrid::kernel::routing::AsImpl*>(current_routing->father());
738
739   if (TRACE_is_enabled())
740     sg_instr_AS_end();
741 }
742
743 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
744 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
745 {
746   simgrid::kernel::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
747   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
748   xbt_assert(dynamic_cast<simgrid::kernel::routing::AsCluster*>(current_routing),
749       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
750
751   s_surf_parsing_link_up_down_t link_up_down;
752   link_up_down.linkUp = Link::byName(hostlink->link_up);
753   link_up_down.linkDown = Link::byName(hostlink->link_down);
754
755   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
756   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
757
758   auto as_cluster = static_cast<simgrid::kernel::routing::AsCluster*>(current_routing);
759
760   if (as_cluster->privateLinks_.find(netcard->id()) != as_cluster->privateLinks_.end())
761     surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
762
763   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name().c_str(), netcard->id());
764   as_cluster->privateLinks_.insert({netcard->id(), link_up_down});
765 }