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