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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 "src/simix/smx_private.h"
18
19 #include "src/include/simgrid/sg_config.h"
20 #include "src/surf/xml/platf_private.hpp"
21
22 #include "src/surf/cpu_interface.hpp"
23 #include "src/surf/network_interface.hpp"
24 #include "surf/surf_routing.h" // FIXME: brain dead public header
25
26 #include "src/surf/AsImpl.hpp"
27 #include "src/surf/AsCluster.hpp"
28 #include "src/surf/AsClusterTorus.hpp"
29 #include "src/surf/AsClusterFatTree.hpp"
30 #include "src/surf/AsClusterDragonfly.hpp"
31 #include "src/surf/AsDijkstra.hpp"
32 #include "src/surf/AsFloyd.hpp"
33 #include "src/surf/AsFull.hpp"
34 #include "src/surf/AsNone.hpp"
35 #include "src/surf/AsVivaldi.hpp"
36
37 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
38
39 XBT_PRIVATE xbt_dynar_t mount_list = nullptr;
40
41 namespace simgrid {
42 namespace surf {
43
44 simgrid::xbt::signal<void(sg_platf_link_cbarg_t)> on_link;
45 simgrid::xbt::signal<void(sg_platf_cluster_cbarg_t)> on_cluster;
46 simgrid::xbt::signal<void(void)> on_postparse;
47
48 }
49 }
50
51 static int surf_parse_models_setup_already_called = 0;
52
53 /* Turn something like "1-4,6,9-11" into the vector {1,2,3,4,6,9,10,11} */
54 static std::vector<int> *explodesRadical(const char*radicals){
55   std::vector<int> *exploded = new std::vector<int>();
56   char *groups;
57   unsigned int iter;
58
59   //Make all hosts
60   xbt_dynar_t radical_elements = xbt_str_split(radicals, ",");
61   xbt_dynar_foreach(radical_elements, iter, groups) {
62
63     xbt_dynar_t radical_ends = xbt_str_split(groups, "-");
64     int start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
65     int end=0;
66
67     switch (xbt_dynar_length(radical_ends)) {
68     case 1:
69       end = start;
70       break;
71     case 2:
72       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
73       break;
74     default:
75       surf_parse_error("Malformed radical: %s", groups);
76       break;
77     }
78
79     for (int i = start; i <= end; i++)
80       exploded->push_back( i );
81
82     xbt_dynar_free(&radical_ends);
83   }
84   xbt_dynar_free(&radical_elements);
85
86   return exploded;
87 }
88
89
90 /** The current AS in the parsing */
91 static simgrid::routing::AsImpl *current_routing = nullptr;
92 static simgrid::routing::AsImpl* routing_get_current()
93 {
94   return current_routing;
95 }
96
97 /** Module management function: creates all internal data structures */
98 void sg_platf_init(void) {
99 }
100
101 /** Module management function: frees all internal data structures */
102 void sg_platf_exit(void) {
103   simgrid::surf::on_link.disconnect_all_slots();
104   simgrid::surf::on_cluster.disconnect_all_slots();
105   simgrid::surf::on_postparse.disconnect_all_slots();
106
107   /* make sure that we will reinit the models while loading the platf once reinited */
108   surf_parse_models_setup_already_called = 0;
109   surf_parse_lex_destroy();
110 }
111
112 /** @brief Add an "host" to the current AS */
113 void sg_platf_new_host(sg_platf_host_cbarg_t host)
114 {
115   xbt_assert(sg_host_by_name(host->id) == nullptr, "Refusing to create a second host named '%s'.", host->id);
116
117   simgrid::routing::AsImpl* current_routing = routing_get_current();
118   if (current_routing->hierarchy_ == simgrid::routing::AsImpl::RoutingMode::unset)
119     current_routing->hierarchy_ = simgrid::routing::AsImpl::RoutingMode::base;
120
121   simgrid::routing::NetCard *netcard =
122       new simgrid::routing::NetCardImpl(host->id, simgrid::routing::NetCard::Type::Host, current_routing);
123
124   sg_host_t h = simgrid::s4u::Host::by_name_or_create(host->id);
125   h->pimpl_netcard = netcard;
126
127   if(mount_list) {
128     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
129     mount_list = nullptr;
130   }
131
132   if (host->coord && strcmp(host->coord, "")) {
133     unsigned int cursor;
134     char*str;
135
136     xbt_assert(COORD_HOST_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
137     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
138     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
139     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", host->id);
140
141     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
142     xbt_dynar_foreach(ctn_str,cursor, str) {
143       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
144       xbt_dynar_push(ctn,&val);
145     }
146     xbt_dynar_free(&ctn_str);
147     xbt_dynar_shrink(ctn, 0);
148     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
149   }
150
151   simgrid::surf::Cpu *cpu = surf_cpu_model_pm->createCpu( h, host->speed_per_pstate, host->core_amount);
152   if (host->state_trace)
153     cpu->setStateTrace(host->state_trace);
154   if (host->speed_trace)
155     cpu->setSpeedTrace(host->speed_trace);
156   surf_host_model->createHost(host->id, netcard, cpu)->attach(h);
157
158   if (host->properties) {
159     xbt_dict_cursor_t cursor=nullptr;
160     char *key,*data;
161     xbt_dict_foreach(host->properties,cursor,key,data)
162       h->setProperty(key,data);
163     xbt_dict_free(&host->properties);
164   }
165
166   if (host->pstate != 0)
167     cpu->setPState(host->pstate);
168
169   simgrid::s4u::Host::onCreation(*h);
170
171   if (TRACE_is_enabled() && TRACE_needs_platform())
172     sg_instr_new_host(host);
173 }
174
175 /** @brief Add a "router" to the network element list */
176 void sg_platf_new_router(sg_platf_router_cbarg_t router)
177 {
178   simgrid::routing::AsImpl* current_routing = routing_get_current();
179
180   if (current_routing->hierarchy_ == simgrid::routing::AsImpl::RoutingMode::unset)
181     current_routing->hierarchy_ = simgrid::routing::AsImpl::RoutingMode::base;
182   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
183              "Refusing to create a router named '%s': this name already describes a node.", router->id);
184
185   simgrid::routing::NetCard* netcard =
186     new simgrid::routing::NetCardImpl(router->id, simgrid::routing::NetCard::Type::Router, current_routing);
187   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, netcard);
188   XBT_DEBUG("Router '%s' has the id %d", router->id, netcard->id());
189
190   if (router->coord && strcmp(router->coord, "")) {
191     unsigned int cursor;
192     char*str;
193
194     xbt_assert(COORD_ASR_LEVEL, "To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
195     /* Pre-parse the host coordinates */
196     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
197     xbt_assert(xbt_dynar_length(ctn_str)==3,"Coordinates of %s must have 3 dimensions", router->id);
198     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),nullptr);
199     xbt_dynar_foreach(ctn_str,cursor, str) {
200       double val = xbt_str_parse_double(str, "Invalid coordinate: %s");
201       xbt_dynar_push(ctn,&val);
202     }
203     xbt_dynar_free(&ctn_str);
204     xbt_dynar_shrink(ctn, 0);
205     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
206   }
207
208   if (TRACE_is_enabled() && TRACE_needs_platform())
209     sg_instr_new_router(router);
210 }
211
212 void sg_platf_new_link(sg_platf_link_cbarg_t link){
213   std::vector<char*> names;
214
215   if (link->policy == SURF_LINK_FULLDUPLEX) {
216     names.push_back(bprintf("%s_UP", link->id));
217     names.push_back(bprintf("%s_DOWN", link->id));
218   } else {
219     names.push_back(xbt_strdup(link->id));
220   }
221   for (auto link_name : names) {
222     Link *l = surf_network_model->createLink(link_name, link->bandwidth, link->latency, link->policy, link->properties);
223
224     if (link->latency_trace)
225       l->setLatencyTrace(link->latency_trace);
226     if (link->bandwidth_trace)
227       l->setBandwidthTrace(link->bandwidth_trace);
228     if (link->state_trace)
229       l->setStateTrace(link->state_trace);
230
231     xbt_free(link_name);
232   }
233
234   simgrid::surf::on_link(link);
235 }
236
237 void sg_platf_new_cluster(sg_platf_cluster_cbarg_t cluster)
238 {
239   using simgrid::routing::AsCluster;
240   using simgrid::routing::AsClusterDragonfly;
241   using simgrid::routing::AsClusterFatTree;
242   using simgrid::routing::AsClusterTorus;
243
244   int rankId=0;
245
246   s_sg_platf_link_cbarg_t link;
247
248   // What an inventive way of initializing the AS that I have as ancestor :-(
249   s_sg_platf_AS_cbarg_t AS;
250   AS.id = cluster->id;
251   switch (cluster->topology) {
252   case SURF_CLUSTER_TORUS:
253     AS.routing = A_surfxml_AS_routing_ClusterTorus;
254     break;
255   case SURF_CLUSTER_DRAGONFLY:
256     AS.routing = A_surfxml_AS_routing_ClusterDragonfly;
257     break;
258   case SURF_CLUSTER_FAT_TREE:
259     AS.routing = A_surfxml_AS_routing_ClusterFatTree;
260     break;
261   default:
262     AS.routing = A_surfxml_AS_routing_Cluster;
263     break;
264   }
265   sg_platf_new_AS_begin(&AS);
266   simgrid::routing::AsCluster *current_as = static_cast<AsCluster*>(routing_get_current());
267   current_as->parse_specific_arguments(cluster);
268
269   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
270     current_as->linkCountPerNode_++;
271     current_as->hasLoopback_ = 1;
272   }
273
274   if(cluster->limiter_link!=0){
275     current_as->linkCountPerNode_++;
276     current_as->hasLimiter_ = 1;
277   }
278
279   std::vector<int> *radicals = explodesRadical(cluster->radical);
280   for (int i : *radicals) {
281     char * host_id = bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
282     char * link_id = bprintf("%s_link_%d", cluster->id, i);
283
284     XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
285
286     s_sg_platf_host_cbarg_t host;
287     memset(&host, 0, sizeof(host));
288     host.id = host_id;
289     if ((cluster->properties != nullptr) && (!xbt_dict_is_empty(cluster->properties))) {
290       xbt_dict_cursor_t cursor=nullptr;
291       char *key,*data;
292       host.properties = xbt_dict_new();
293
294       xbt_dict_foreach(cluster->properties,cursor,key,data) {
295         xbt_dict_set(host.properties, key, xbt_strdup(data),free);
296       }
297     }
298
299     host.speed_per_pstate = xbt_dynar_new(sizeof(double), nullptr);
300     xbt_dynar_push(host.speed_per_pstate,&cluster->speed);
301     host.pstate = 0;
302     host.core_amount = cluster->core_amount;
303     host.coord = "";
304     sg_platf_new_host(&host);
305     xbt_dynar_free(&host.speed_per_pstate);
306     XBT_DEBUG("</host>");
307
308     XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id, cluster->bw, cluster->lat);
309
310     s_surf_parsing_link_up_down_t info_lim, info_loop;
311     // All links are saved in a matrix;
312     // every row describes a single node; every node may have multiple links.
313     // the first column may store a link from x to x if p_has_loopback is set
314     // the second column may store a limiter link if p_has_limiter is set
315     // other columns are to store one or more link for the node
316
317     //add a loopback link
318     if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
319       char *tmp_link = bprintf("%s_loopback", link_id);
320       XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->loopback_bw);
321
322       memset(&link, 0, sizeof(link));
323       link.id        = tmp_link;
324       link.bandwidth = cluster->loopback_bw;
325       link.latency   = cluster->loopback_lat;
326       link.policy    = SURF_LINK_FATPIPE;
327       sg_platf_new_link(&link);
328       info_loop.linkUp = info_loop.linkDown = Link::byName(tmp_link);
329       free(tmp_link);
330       auto as_cluster = static_cast<AsCluster*>(current_as);
331       xbt_dynar_set(as_cluster->privateLinks_, rankId*as_cluster->linkCountPerNode_, &info_loop);
332     }
333
334     //add a limiter link (shared link to account for maximal bandwidth of the node)
335     if(cluster->limiter_link!=0){
336       char *tmp_link = bprintf("%s_limiter", link_id);
337       XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link, cluster->limiter_link);
338
339       memset(&link, 0, sizeof(link));
340       link.id = tmp_link;
341       link.bandwidth = cluster->limiter_link;
342       link.latency = 0;
343       link.policy = SURF_LINK_SHARED;
344       sg_platf_new_link(&link);
345       info_lim.linkUp = info_lim.linkDown = Link::byName(tmp_link);
346       free(tmp_link);
347       xbt_dynar_set(current_as->privateLinks_, rankId * current_as->linkCountPerNode_ + current_as->hasLoopback_ , &info_lim);
348     }
349
350     //call the cluster function that adds the others links
351     if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
352       ((AsClusterFatTree*) current_as)->addProcessingNode(i);
353     }
354     else {
355       current_as->create_links_for_node(cluster, i, rankId,
356           rankId*current_as->linkCountPerNode_ + current_as->hasLoopback_ + current_as->hasLimiter_ );
357     }
358     xbt_free(link_id);
359     xbt_free(host_id);
360     rankId++;
361   }
362   delete radicals;
363
364   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
365   // and it's very useful to connect clusters together
366   XBT_DEBUG(" ");
367   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
368   char *newid = nullptr;
369   s_sg_platf_router_cbarg_t router;
370   memset(&router, 0, sizeof(router));
371   router.id = cluster->router_id;
372   if (!router.id || !strcmp(router.id, ""))
373     router.id = newid = bprintf("%s%s_router%s", cluster->prefix, cluster->id, cluster->suffix);
374   sg_platf_new_router(&router);
375   current_as->router_ = (simgrid::routing::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
376   free(newid);
377
378   //Make the backbone
379   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
380
381     memset(&link, 0, sizeof(link));
382     link.id        = bprintf("%s_backbone", cluster->id);
383     link.bandwidth = cluster->bb_bw;
384     link.latency   = cluster->bb_lat;
385     link.policy    = cluster->bb_sharing_policy;
386
387     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link.id, cluster->bb_bw, cluster->bb_lat);
388     sg_platf_new_link(&link);
389
390     routing_cluster_add_backbone(Link::byName(link.id));
391     free((char*)link.id);
392   }
393
394   XBT_DEBUG("</AS>");
395   sg_platf_new_AS_seal();
396
397   simgrid::surf::on_cluster(cluster);
398 }
399 void routing_cluster_add_backbone(simgrid::surf::Link* bb) {
400   simgrid::routing::AsCluster *cluster = dynamic_cast<simgrid::routing::AsCluster*>(current_routing);
401
402   xbt_assert(cluster, "Only hosts from Cluster can get a backbone.");
403   xbt_assert(nullptr == cluster->backbone_, "Cluster %s already has a backbone link!", cluster->name());
404
405   cluster->backbone_ = bb;
406   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->name());
407 }
408
409 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
410 {
411   std::vector<int> *radicals = explodesRadical(cabinet->radical);
412
413   for (int radical : *radicals) {
414     char *hostname = bprintf("%s%d%s", cabinet->prefix, radical, cabinet->suffix);
415     s_sg_platf_host_cbarg_t host;
416     memset(&host, 0, sizeof(host));
417     host.pstate           = 0;
418     host.core_amount      = 1;
419     host.id               = hostname;
420     host.speed_per_pstate = xbt_dynar_new(sizeof(double), nullptr);
421     xbt_dynar_push(host.speed_per_pstate,&cabinet->speed);
422     sg_platf_new_host(&host);
423     xbt_dynar_free(&host.speed_per_pstate);
424
425     s_sg_platf_link_cbarg_t link;
426     memset(&link, 0, sizeof(link));
427     link.policy    = SURF_LINK_FULLDUPLEX;
428     link.latency   = cabinet->lat;
429     link.bandwidth = cabinet->bw;
430     link.id        = bprintf("link_%s",hostname);
431     sg_platf_new_link(&link);
432     free((char*)link.id);
433
434     s_sg_platf_host_link_cbarg_t host_link;
435     memset(&host_link, 0, sizeof(host_link));
436     host_link.id        = hostname;
437     host_link.link_up   = bprintf("link_%s_UP",hostname);
438     host_link.link_down = bprintf("link_%s_DOWN",hostname);
439     sg_platf_new_hostlink(&host_link);
440     free((char*)host_link.link_up);
441     free((char*)host_link.link_down);
442
443     free(hostname);
444   }
445   delete(radicals);
446 }
447
448 void sg_platf_new_storage(sg_platf_storage_cbarg_t storage)
449 {
450   xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
451                "Refusing to add a second storage named \"%s\"", storage->id);
452
453   void* stype = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
454   xbt_assert(stype,"No storage type '%s'", storage->type_id);
455
456   XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
457       storage->id,
458       storage->type_id,
459       storage->content);
460
461   xbt_lib_set(storage_lib, storage->id, ROUTING_STORAGE_LEVEL, (void *) xbt_strdup(storage->type_id));
462
463   // if storage content is not specified use the content of storage_type if any
464   if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
465     storage->content = ((storage_type_t) stype)->content;
466     storage->content_type = ((storage_type_t) stype)->content_type;
467     XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
468         storage->id,((storage_type_t) stype)->content_type,
469         ((storage_type_t) stype)->type_id);
470   }
471
472   XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
473       "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
474       "\n\t\tproperties '%p''\n",
475       storage->id,
476       ((storage_type_t) stype)->model,
477       ((storage_type_t) stype)->type_id,
478       storage->content,
479       storage->content_type,
480     storage->properties);
481
482   surf_storage_model->createStorage(storage->id,
483                                      ((storage_type_t) stype)->type_id,
484                                      storage->content,
485                                      storage->content_type,
486                    storage->properties,
487                                      storage->attach);
488 }
489 void sg_platf_new_storage_type(sg_platf_storage_type_cbarg_t storage_type){
490
491   xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
492                "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
493
494   storage_type_t stype = xbt_new0(s_storage_type_t, 1);
495   stype->model = xbt_strdup(storage_type->model);
496   stype->properties = storage_type->properties;
497   stype->content = xbt_strdup(storage_type->content);
498   stype->content_type = xbt_strdup(storage_type->content_type);
499   stype->type_id = xbt_strdup(storage_type->id);
500   stype->size = storage_type->size;
501   stype->model_properties = storage_type->model_properties;
502
503   XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
504       "content '%s', and content_type '%s'",
505       stype->type_id,
506       stype->model,
507       storage_type->content,
508       storage_type->content_type);
509
510   xbt_lib_set(storage_type_lib,
511       stype->type_id,
512       ROUTING_STORAGE_TYPE_LEVEL,
513       (void *) stype);
514 }
515
516 static void mount_free(void *p)
517 {
518   mount_t mnt = (mount_t) p;
519   xbt_free(mnt->name);
520 }
521
522 void sg_platf_new_mount(sg_platf_mount_cbarg_t mount){
523   xbt_assert(xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL),
524       "Cannot mount non-existent disk \"%s\"", mount->storageId);
525
526   XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
527
528   s_mount_t mnt;
529   mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
530   mnt.name = xbt_strdup(mount->name);
531
532   if(!mount_list){
533     XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
534     mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
535   }
536   xbt_dynar_push(mount_list, &mnt);
537 }
538
539 void sg_platf_new_route(sg_platf_route_cbarg_t route)
540 {
541   routing_get_current()->addRoute(route);
542 }
543
544 void sg_platf_new_bypassRoute(sg_platf_route_cbarg_t bypassRoute)
545 {
546   routing_get_current()->addBypassRoute(bypassRoute);
547 }
548
549 void sg_platf_new_process(sg_platf_process_cbarg_t process)
550 {
551   sg_host_t host = sg_host_by_name(process->host);
552   if (!host) {
553     // The requested host does not exist. Do a nice message to the user
554     char *tmp = bprintf("Cannot create process '%s': host '%s' does not exist\nExisting hosts: '",process->function, process->host);
555     xbt_strbuff_t msg = xbt_strbuff_new_from(tmp);
556     free(tmp);
557     xbt_dynar_t all_hosts = xbt_dynar_sort_strings(sg_hosts_as_dynar());
558     simgrid::s4u::Host* host;
559     unsigned int cursor;
560     xbt_dynar_foreach(all_hosts,cursor, host) {
561       xbt_strbuff_append(msg,host->name().c_str());
562       xbt_strbuff_append(msg,"', '");
563       if (msg->used > 1024) {
564         msg->data[msg->used-3]='\0';
565         msg->used -= 3;
566
567         xbt_strbuff_append(msg," ...(list truncated)......");// That will be shortened by 3 chars when existing the loop
568       }
569     }
570     msg->data[msg->used-3]='\0';
571     xbt_die("%s", msg->data);
572   }
573   xbt_main_func_t parse_code = SIMIX_get_registered_function(process->function);
574   xbt_assert(parse_code, "Function '%s' unknown", process->function);
575
576   double start_time = process->start_time;
577   double kill_time  = process->kill_time;
578   int auto_restart = process->on_failure == SURF_PROCESS_ON_FAILURE_DIE ? 0 : 1;
579
580   std::function<void()> code = simgrid::xbt::wrapMain(parse_code, process->argc, process->argv);
581
582   smx_process_arg_t arg = nullptr;
583   smx_process_t process_created = nullptr;
584
585   arg = new simgrid::simix::ProcessArg();
586   arg->name = std::string(process->argv[0]);
587   arg->code = code;
588   arg->data = nullptr;
589   arg->hostname = sg_host_get_name(host);
590   arg->kill_time = kill_time;
591   arg->properties = current_property_set;
592   if (!sg_host_simix(host)->boot_processes)
593     sg_host_simix(host)->boot_processes = xbt_dynar_new(sizeof(smx_process_arg_t), _SIMIX_host_free_process_arg);
594
595   xbt_dynar_push_as(sg_host_simix(host)->boot_processes,smx_process_arg_t,arg);
596
597   if (start_time > SIMIX_get_clock()) {
598
599     arg = new simgrid::simix::ProcessArg();
600     arg->name = std::string(process->argv[0]);
601     arg->code = std::move(code);
602     arg->data = nullptr;
603     arg->hostname = sg_host_get_name(host);
604     arg->kill_time = kill_time;
605     arg->properties = current_property_set;
606
607     XBT_DEBUG("Process %s(%s) will be started at time %f",
608       arg->name.c_str(), arg->hostname, start_time);
609     SIMIX_timer_set(start_time, [=]() {
610       simix_global->create_process_function(
611                                             arg->name.c_str(),
612                                             std::move(arg->code),
613                                             arg->data,
614                                             arg->hostname,
615                                             arg->kill_time,
616                                             arg->properties,
617                                             arg->auto_restart,
618                                             nullptr);
619       delete arg;
620     });
621   } else {                      // start_time <= SIMIX_get_clock()
622     XBT_DEBUG("Starting Process %s(%s) right now",
623       arg->name.c_str(), sg_host_get_name(host));
624
625     if (simix_global->create_process_function)
626       process_created = simix_global->create_process_function(
627           arg->name.c_str(), std::move(code), nullptr,
628           sg_host_get_name(host), kill_time,
629           current_property_set, auto_restart, nullptr);
630     else
631       process_created = simcall_process_create(
632           arg->name.c_str(), std::move(code), nullptr, sg_host_get_name(host), kill_time,
633           current_property_set,auto_restart);
634
635     /* verify if process has been created (won't be the case if the host is currently dead, but that's fine) */
636     if (!process_created) {
637       return;
638     }
639   }
640   current_property_set = nullptr;
641 }
642
643 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
644 {
645   using simgrid::routing::NetCard;
646   using simgrid::routing::AsCluster;
647
648   char *host_id = bprintf("peer_%s", peer->id);
649   char *router_id = bprintf("router_%s", peer->id);
650
651   XBT_DEBUG(" ");
652
653   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
654   s_sg_platf_AS_cbarg_t AS;
655   AS.id      = peer->id;
656   AS.routing = A_surfxml_AS_routing_Cluster;
657   sg_platf_new_AS_begin(&AS);
658
659   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
660   s_sg_platf_host_cbarg_t host;
661   memset(&host, 0, sizeof(host));
662   host.id = host_id;
663
664   host.speed_per_pstate = xbt_dynar_new(sizeof(double), nullptr);
665   xbt_dynar_push(host.speed_per_pstate,&peer->speed);
666   host.pstate = 0;
667   host.speed_trace = peer->availability_trace;
668   host.state_trace = peer->state_trace;
669   host.core_amount = 1;
670   sg_platf_new_host(&host);
671   xbt_dynar_free(&host.speed_per_pstate);
672
673   s_sg_platf_link_cbarg_t link;
674   memset(&link, 0, sizeof(link));
675   link.policy  = SURF_LINK_SHARED;
676   link.latency = peer->lat;
677
678   char* link_up = bprintf("link_%s_UP",peer->id);
679   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up, peer->bw_out, peer->lat);
680   link.id = link_up;
681   link.bandwidth = peer->bw_out;
682   sg_platf_new_link(&link);
683
684   char* link_down = bprintf("link_%s_DOWN",peer->id);
685   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down, peer->bw_in, peer->lat);
686   link.id = link_down;
687   link.bandwidth = peer->bw_in;
688   sg_platf_new_link(&link);
689
690   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
691   s_sg_platf_host_link_cbarg_t host_link;
692   memset(&host_link, 0, sizeof(host_link));
693   host_link.id        = host_id;
694   host_link.link_up   = link_up;
695   host_link.link_down = link_down;
696   sg_platf_new_hostlink(&host_link);
697   free(link_up);
698   free(link_down);
699
700   XBT_DEBUG("<router id=\"%s\"/>", router_id);
701   s_sg_platf_router_cbarg_t router;
702   memset(&router, 0, sizeof(router));
703   router.id = router_id;
704   router.coord = peer->coord;
705   sg_platf_new_router(&router);
706   static_cast<AsCluster*>(current_routing)->router_ = static_cast<NetCard*>(xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL));
707
708   XBT_DEBUG("</AS>");
709   sg_platf_new_AS_seal();
710   XBT_DEBUG(" ");
711
712   free(router_id);
713   free(host_id);
714 }
715
716 void sg_platf_begin() { /* Do nothing: just for symmetry of user code */ }
717
718 void sg_platf_end() {
719   simgrid::surf::on_postparse();
720 }
721
722 /* Pick the right models for CPU, net and host, and call their model_init_preparse */
723 static void surf_config_models_setup()
724 {
725   const char *host_model_name;
726   const char *vm_model_name;
727   int host_id = -1;
728   int vm_id = -1;
729   char *network_model_name = nullptr;
730   char *cpu_model_name = nullptr;
731   int storage_id = -1;
732   char *storage_model_name = nullptr;
733
734   host_model_name    = xbt_cfg_get_string("host/model");
735   vm_model_name      = xbt_cfg_get_string("vm/model");
736   network_model_name = xbt_cfg_get_string("network/model");
737   cpu_model_name     = xbt_cfg_get_string("cpu/model");
738   storage_model_name = xbt_cfg_get_string("storage/model");
739
740   /* Check whether we use a net/cpu model differing from the default ones, in which case
741    * we should switch to the "compound" host model to correctly dispatch stuff to
742    * the right net/cpu models.
743    */
744
745   if ((!xbt_cfg_is_default_value("network/model") ||
746        !xbt_cfg_is_default_value("cpu/model")) &&
747       xbt_cfg_is_default_value("host/model")) {
748     host_model_name = "compound";
749     xbt_cfg_set_string("host/model", host_model_name);
750   }
751
752   XBT_DEBUG("host model: %s", host_model_name);
753   host_id = find_model_description(surf_host_model_description, host_model_name);
754   if (!strcmp(host_model_name, "compound")) {
755     int network_id = -1;
756     int cpu_id = -1;
757
758     xbt_assert(cpu_model_name,
759                 "Set a cpu model to use with the 'compound' host model");
760
761     xbt_assert(network_model_name,
762                 "Set a network model to use with the 'compound' host model");
763
764     if(surf_cpu_model_init_preparse){
765       surf_cpu_model_init_preparse();
766     } else {
767       cpu_id =
768           find_model_description(surf_cpu_model_description, cpu_model_name);
769       surf_cpu_model_description[cpu_id].model_init_preparse();
770     }
771
772     network_id =
773         find_model_description(surf_network_model_description,
774                                network_model_name);
775     surf_network_model_description[network_id].model_init_preparse();
776   }
777
778   XBT_DEBUG("Call host_model_init");
779   surf_host_model_description[host_id].model_init_preparse();
780
781   XBT_DEBUG("Call vm_model_init");
782   vm_id = find_model_description(surf_vm_model_description, vm_model_name);
783   surf_vm_model_description[vm_id].model_init_preparse();
784
785   XBT_DEBUG("Call storage_model_init");
786   storage_id = find_model_description(surf_storage_model_description, storage_model_name);
787   surf_storage_model_description[storage_id].model_init_preparse();
788
789 }
790
791 /**
792  * \brief Make a new routing component to the platform
793  *
794  * Add a new autonomous system to the platform. Any elements (such as host,
795  * router or sub-AS) added after this call and before the corresponding call
796  * to sg_platf_new_AS_seal() will be added to this AS.
797  *
798  * Once this function was called, the configuration concerning the used
799  * models cannot be changed anymore.
800  *
801  * @param AS the parameters defining the AS to build.
802  */
803 simgrid::s4u::As * sg_platf_new_AS_begin(sg_platf_AS_cbarg_t AS)
804 {
805   if (!surf_parse_models_setup_already_called) {
806     /* Initialize the surf models. That must be done after we got all config, and before we need the models.
807      * That is, after the last <config> tag, if any, and before the first of cluster|peer|AS|trace|trace_connect
808      *
809      * I'm not sure for <trace> and <trace_connect>, there may be a bug here
810      * (FIXME: check it out by creating a file beginning with one of these tags)
811      * but cluster and peer create ASes internally, so putting the code in there is ok.
812      */
813     surf_parse_models_setup_already_called = 1;
814     surf_config_models_setup();
815   }
816
817   xbt_assert(nullptr == xbt_lib_get_or_null(as_router_lib, AS->id, ROUTING_ASR_LEVEL),
818       "Refusing to create a second AS called \"%s\".", AS->id);
819
820   _sg_cfg_init_status = 2; /* HACK: direct access to the global controlling the level of configuration to prevent
821                             * any further config now that we created some real content */
822
823
824   /* search the routing model */
825   simgrid::routing::AsImpl *new_as = nullptr;
826   switch(AS->routing){
827     case A_surfxml_AS_routing_Cluster:        new_as = new simgrid::routing::AsCluster(AS->id);        break;
828     case A_surfxml_AS_routing_ClusterDragonfly:   new_as = new simgrid::routing::AsClusterDragonfly(AS->id);   break;
829     case A_surfxml_AS_routing_ClusterTorus:   new_as = new simgrid::routing::AsClusterTorus(AS->id);   break;
830     case A_surfxml_AS_routing_ClusterFatTree: new_as = new simgrid::routing::AsClusterFatTree(AS->id); break;
831     case A_surfxml_AS_routing_Dijkstra:       new_as = new simgrid::routing::AsDijkstra(AS->id, 0);    break;
832     case A_surfxml_AS_routing_DijkstraCache:  new_as = new simgrid::routing::AsDijkstra(AS->id, 1);    break;
833     case A_surfxml_AS_routing_Floyd:          new_as = new simgrid::routing::AsFloyd(AS->id);          break;
834     case A_surfxml_AS_routing_Full:           new_as = new simgrid::routing::AsFull(AS->id);           break;
835     case A_surfxml_AS_routing_None:           new_as = new simgrid::routing::AsNone(AS->id);           break;
836     case A_surfxml_AS_routing_Vivaldi:        new_as = new simgrid::routing::AsVivaldi(AS->id);        break;
837     default:                                  xbt_die("Not a valid model!");                        break;
838   }
839
840   /* make a new routing component */
841   simgrid::routing::NetCard *netcard = new simgrid::routing::NetCardImpl(new_as->name(), simgrid::routing::NetCard::Type::As, current_routing);
842
843   if (current_routing == nullptr && routing_platf->root_ == nullptr) { /* it is the first one */
844     routing_platf->root_ = new_as;
845   } else if (current_routing != nullptr && routing_platf->root_ != nullptr) {
846
847     xbt_assert(!xbt_dict_get_or_null(current_routing->children(), AS->id),
848                "The AS \"%s\" already exists", AS->id);
849     /* it is a part of the tree */
850     new_as->father_ = current_routing;
851     /* set the father behavior */
852     if (current_routing->hierarchy_ == simgrid::routing::AsImpl::RoutingMode::unset)
853       current_routing->hierarchy_ = simgrid::routing::AsImpl::RoutingMode::recursive;
854     /* add to the sons dictionary */
855     xbt_dict_set(current_routing->children(), AS->id, (void *) new_as, nullptr);
856   } else {
857     THROWF(arg_error, 0, "All defined components must belong to a AS");
858   }
859
860   xbt_lib_set(as_router_lib, netcard->name(), ROUTING_ASR_LEVEL, (void *) netcard);
861   XBT_DEBUG("Having set name '%s' id '%d'", new_as->name(), netcard->id());
862
863   /* set the new current component of the tree */
864   current_routing = new_as;
865   current_routing->netcard_ = netcard;
866
867   simgrid::routing::asCreatedCallbacks(new_as);
868   if (TRACE_is_enabled())
869     sg_instr_AS_begin(AS);
870
871   return new_as;
872 }
873
874 /**
875  * \brief Specify that the description of the current AS is finished
876  *
877  * Once you've declared all the content of your AS, you have to seal
878  * it with this call. Your AS is not usable until you call this function.
879  */
880 void sg_platf_new_AS_seal()
881 {
882   xbt_assert(current_routing, "Cannot seal the current AS: none under construction");
883   current_routing->seal();
884   current_routing = static_cast<simgrid::routing::AsImpl*>(current_routing->father());
885
886   if (TRACE_is_enabled())
887     sg_instr_AS_end();
888 }
889
890 /** @brief Add a link connecting an host to the rest of its AS (which must be cluster or vivaldi) */
891 void sg_platf_new_hostlink(sg_platf_host_link_cbarg_t hostlink)
892 {
893   simgrid::routing::NetCard *netcard = sg_host_by_name(hostlink->id)->pimpl_netcard;
894   xbt_assert(netcard, "Host '%s' not found!", hostlink->id);
895   xbt_assert(dynamic_cast<simgrid::routing::AsCluster*>(current_routing),
896       "Only hosts from Cluster and Vivaldi ASes can get an host_link.");
897
898   s_surf_parsing_link_up_down_t link_up_down;
899   link_up_down.linkUp = Link::byName(hostlink->link_up);
900   link_up_down.linkDown = Link::byName(hostlink->link_down);
901
902   xbt_assert(link_up_down.linkUp, "Link '%s' not found!",hostlink->link_up);
903   xbt_assert(link_up_down.linkDown, "Link '%s' not found!",hostlink->link_down);
904
905   // If dynar is is greater than netcard id and if the host_link is already defined
906   auto as_cluster = static_cast<simgrid::routing::AsCluster*>(current_routing);
907   if((int)xbt_dynar_length(as_cluster->privateLinks_) > netcard->id() &&
908       xbt_dynar_get_as(as_cluster->privateLinks_, netcard->id(), void*))
909   surf_parse_error("Host_link for '%s' is already defined!",hostlink->id);
910
911   XBT_DEBUG("Push Host_link for host '%s' to position %d", netcard->name(), netcard->id());
912   xbt_dynar_set_as(as_cluster->privateLinks_, netcard->id(), s_surf_parsing_link_up_down_t, link_up_down);
913 }