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Use the function sg_platf_new_linkctn when parsing platform
[simgrid.git] / src / surf / surf_routing.c
1 /* Copyright (c) 2009, 2010, 2011. 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 <pcre.h>               /* regular expression library */
8
9 #include "simgrid/platf_interface.h"    // platform creation API internal interface
10
11 #include "surf_routing_private.h"
12 #include "surf/surf_routing.h"
13 #include "surf/surfxml_parse_values.h"
14
15 /**
16  * @ingroup SURF_build_api
17  * @brief A library containing all known workstations
18  */
19 xbt_lib_t host_lib;
20
21 int ROUTING_HOST_LEVEL;         //Routing level
22 int SURF_CPU_LEVEL;             //Surf cpu level
23 int SURF_WKS_LEVEL;             //Surf workstation level
24 int SIMIX_HOST_LEVEL;           //Simix level
25 int MSG_HOST_LEVEL;             //Msg level
26 int SD_HOST_LEVEL;              //Simdag level
27 int COORD_HOST_LEVEL=0;         //Coordinates level
28 int NS3_HOST_LEVEL;             //host node for ns3
29
30 xbt_dict_t watched_hosts_lib;
31
32 /**
33  * @ingroup SURF_build_api
34  * @brief A library containing all known links
35  */
36 xbt_lib_t link_lib;
37 int SD_LINK_LEVEL;              //Simdag level
38 int SURF_LINK_LEVEL;            //Surf level
39 int NS3_LINK_LEVEL;             //link for ns3
40
41 xbt_lib_t as_router_lib;
42 int ROUTING_ASR_LEVEL;          //Routing level
43 int COORD_ASR_LEVEL;            //Coordinates level
44 int NS3_ASR_LEVEL;              //host node for ns3
45
46 static xbt_dict_t random_value = NULL;
47
48 /** @brief Retrieve a routing edge from its name
49  *
50  * Routing edges are either CPU/workstation and routers, whatever
51  */
52 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
53     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
54     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
55   return net_elm;
56 }
57
58 /* Global vars */
59 routing_platf_t routing_platf = NULL;
60 AS_t current_routing = NULL;
61
62 /* global parse functions */
63 xbt_dynar_t parsed_link_list = NULL;   /* temporary store of current list link of a route */
64 extern xbt_dynar_t mount_list;
65
66 static const char *src = NULL;  /* temporary store the source name of a route */
67 static const char *dst = NULL;  /* temporary store the destination name of a route */
68 static char *gw_src = NULL;     /* temporary store the gateway source name of a route */
69 static char *gw_dst = NULL;     /* temporary store the gateway destination name of a route */
70
71 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
72
73 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
74 static void routing_parse_Srandom(void);        /* random bypass */
75
76 static void routing_parse_postparse(void);
77
78 /* this lines are only for replace use like index in the model table */
79 typedef enum {
80   SURF_MODEL_FULL = 0,
81   SURF_MODEL_FLOYD,
82   SURF_MODEL_DIJKSTRA,
83   SURF_MODEL_DIJKSTRACACHE,
84   SURF_MODEL_NONE,
85   SURF_MODEL_RULEBASED,
86   SURF_MODEL_VIVALDI,
87   SURF_MODEL_CLUSTER
88 } e_routing_types;
89
90 struct s_model_type routing_models[] = {
91   {"Full",
92    "Full routing data (fast, large memory requirements, fully expressive)",
93    model_full_create, model_full_end},
94   {"Floyd",
95    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
96    model_floyd_create, model_floyd_end},
97   {"Dijkstra",
98    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
99    model_dijkstra_create, model_dijkstra_both_end},
100   {"DijkstraCache",
101    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
102    model_dijkstracache_create, model_dijkstra_both_end},
103   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
104    model_none_create,  NULL},
105   {"RuleBased", "Rule-Based routing data (...)",
106    model_rulebased_create, NULL},
107   {"Vivaldi", "Vivaldi routing",
108    model_vivaldi_create, NULL},
109   {"Cluster", "Cluster routing",
110    model_cluster_create, NULL},
111   {NULL, NULL, NULL, NULL}
112 };
113
114 /**
115  * \brief Add a "host_link" to the network element list
116  */
117 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
118 {
119   sg_routing_edge_t info = NULL;
120   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
121   xbt_assert(info, "Host '%s' not found!",host->id);
122   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
123       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
124       "You have to be in model Cluster to use tag host_link!");
125
126   s_surf_parsing_link_up_down_t link_up_down;
127   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
128   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
129
130   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
131   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
132
133   if(!current_routing->link_up_down_list)
134     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
135
136   // If dynar is is greater than edge id and if the host_link is already defined
137   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
138       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
139     xbt_die("Host_link for '%s' is already defined!",host->id);
140
141   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
142   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
143 }
144
145 /**
146  * \brief Add a "host" to the network element list
147  */
148 static void parse_S_host(sg_platf_host_cbarg_t host)
149 {
150   sg_routing_edge_t info = NULL;
151   if (current_routing->hierarchy == SURF_ROUTING_NULL)
152     current_routing->hierarchy = SURF_ROUTING_BASE;
153   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
154              "Reading a host, processing unit \"%s\" already exists", host->id);
155
156   info = xbt_new0(s_network_element_t, 1);
157   info->rc_component = current_routing;
158   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
159   info->name = xbt_strdup(host->id);
160   info->id = current_routing->parse_PU(current_routing, (void *) info);
161   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
162   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
163
164   if(mount_list){
165     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
166     mount_list = NULL;
167   }
168
169   if (host->coord && strcmp(host->coord, "")) {
170     unsigned int cursor;
171     char*str;
172
173     if (!COORD_HOST_LEVEL)
174       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
175     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
176     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
177     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
178     xbt_dynar_foreach(ctn_str,cursor, str) {
179       double val = atof(str);
180       xbt_dynar_push(ctn,&val);
181     }
182     xbt_dynar_shrink(ctn, 0);
183     xbt_dynar_free(&ctn_str);
184     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
185     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
186   }
187 }
188
189 /**
190  * \brief Add a "router" to the network element list
191  */
192 static void parse_S_router(sg_platf_router_cbarg_t router)
193 {
194   sg_routing_edge_t info = NULL;
195   if (current_routing->hierarchy == SURF_ROUTING_NULL)
196     current_routing->hierarchy = SURF_ROUTING_BASE;
197   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
198              "Reading a router, processing unit \"%s\" already exists",
199              router->id);
200
201   info = xbt_new0(s_network_element_t, 1);
202   info->rc_component = current_routing;
203   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
204   info->name = xbt_strdup(router->id);
205   info->id = current_routing->parse_PU(current_routing, (void *) info);
206   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
207   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
208
209   if (router->coord && strcmp(router->coord, "")) {
210     unsigned int cursor;
211     char*str;
212
213     if (!COORD_ASR_LEVEL)
214       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
215     /* Pre-parse the host coordinates */
216     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
217     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
218     xbt_dynar_foreach(ctn_str,cursor, str) {
219       double val = atof(str);
220       xbt_dynar_push(ctn,&val);
221     }
222     xbt_dynar_shrink(ctn, 0);
223     xbt_dynar_free(&ctn_str);
224     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
225     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
226   }
227 }
228
229
230 /**
231  * \brief Set the end points for a route
232  */
233 static void routing_parse_S_route(void)
234 {
235   src = A_surfxml_route_src;
236   dst = A_surfxml_route_dst;
237   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
238              "Missing end-points while defining route \"%s\"->\"%s\"",
239              src, dst);
240   parsed_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
241 }
242
243 /**
244  * \brief Set the end points and gateways for a ASroute
245  */
246 static void routing_parse_S_ASroute(void)
247 {
248   src = A_surfxml_ASroute_src;
249   dst = A_surfxml_ASroute_dst;
250   gw_src = A_surfxml_ASroute_gw_src;
251   gw_dst = A_surfxml_ASroute_gw_dst;
252   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0 || strlen(gw_dst) > 0,
253              "Missing end-points while defining route \"%s\"->\"%s\" (with %s and %s as gateways)",
254              src, dst,gw_src,gw_dst);
255   parsed_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
256 }
257
258 /**
259  * \brief Set the end points for a bypassRoute
260  */
261 static void routing_parse_S_bypassRoute(void)
262 {
263   src = A_surfxml_bypassRoute_src;
264   dst = A_surfxml_bypassRoute_dst;
265   gw_src = NULL;
266   gw_dst = NULL;
267   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0 || strlen(gw_dst) > 0,
268              "Missing end-points while defining route \"%s\"->\"%s\" (with %s and %s as gateways)",
269              src, dst,gw_src,gw_dst);
270   parsed_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
271 }
272
273 /**
274  * \brief Set the end points for a bypassASroute
275  */
276 static void routing_parse_S_bypassASroute(void)
277 {
278   src = A_surfxml_bypassASroute_src;
279   dst = A_surfxml_bypassASroute_dst;
280   gw_src = A_surfxml_bypassASroute_gw_src;
281   gw_dst = A_surfxml_bypassASroute_gw_dst;
282   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0 || strlen(gw_dst) > 0,
283              "Missing end-points while defining route \"%s\"->\"%s\" (with %s and %s as gateways)",
284              src, dst,gw_src,gw_dst);
285   parsed_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
286 }
287
288 /**
289  * \brief Store the route by calling the set_route function of the current routing component
290  */
291 static void routing_parse_E_route(void)
292 {
293   route_t route = xbt_new0(s_route_t, 1);
294   route->link_list = parsed_link_list;
295   xbt_assert(current_routing->parse_route,
296              "no defined method \"set_route\" in \"%s\"",
297              current_routing->name);
298   current_routing->parse_route(current_routing, src, dst, route);
299   generic_free_route(route);
300   parsed_link_list = NULL;
301   src = NULL;
302   dst = NULL;
303 }
304
305 /**
306  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
307  */
308 static void routing_parse_E_ASroute(void)
309 {
310   route_t e_route = xbt_new0(s_route_t, 1);
311   e_route->link_list = parsed_link_list;
312
313   if (!strcmp(current_routing->model_desc->name,"RuleBased")) {
314     // DIRTY PERL HACK AHEAD: with the rulebased routing, the {src,dst}_gateway fields
315     // store the provided name instead of the entity directly (model_rulebased_parse_ASroute knows)
316     //
317     // This is because the user will provide something like "^AS_(.*)$" instead of the proper name of a given entity
318     e_route->src_gateway = (sg_routing_edge_t) gw_src;
319     e_route->dst_gateway = (sg_routing_edge_t) gw_dst;
320   } else {
321     e_route->src_gateway = sg_routing_edge_by_name_or_null(gw_src);
322     e_route->dst_gateway = sg_routing_edge_by_name_or_null(gw_dst);
323   }
324   xbt_assert(current_routing->parse_ASroute,
325              "no defined method \"set_ASroute\" in \"%s\"",
326              current_routing->name);
327   current_routing->parse_ASroute(current_routing, src, dst, e_route);
328   generic_free_route(e_route);
329   parsed_link_list = NULL;
330   src = NULL;
331   dst = NULL;
332   gw_src = NULL;
333   gw_dst = NULL;
334 }
335
336 /**
337  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
338  */
339 static void routing_parse_E_bypassRoute(void)
340 {
341   route_t e_route = xbt_new0(s_route_t, 1);
342   e_route->link_list = parsed_link_list;
343
344   xbt_assert(current_routing->parse_bypassroute,
345              "Bypassing mechanism not implemented by routing '%s'",
346              current_routing->name);
347
348   current_routing->parse_bypassroute(current_routing, src, dst, e_route);
349   parsed_link_list = NULL;
350   src = NULL;
351   dst = NULL;
352   gw_src = NULL;
353   gw_dst = NULL;
354 }
355
356 /**
357  * \brief Set a new link on the actual list of link for a route or ASroute from XML
358  */
359
360 static void routing_parse_link_ctn(sg_platf_linkctn_cbarg_t linkctn)
361 {
362   char *link_id;
363   switch (linkctn->direction) {
364   case SURF_LINK_DIRECTION_NONE:
365     link_id = xbt_strdup(linkctn->id);
366     break;
367   case SURF_LINK_DIRECTION_UP:
368     link_id = bprintf("%s_UP", linkctn->id);
369     break;
370   case SURF_LINK_DIRECTION_DOWN:
371     link_id = bprintf("%s_DOWN", linkctn->id);
372     break;
373   }
374   xbt_dynar_push(parsed_link_list, &link_id);
375 }
376
377 /**
378  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
379  */
380 static void routing_parse_E_bypassASroute(void)
381 {
382   route_t e_route = xbt_new0(s_route_t, 1);
383   e_route->link_list = parsed_link_list;
384   e_route->src_gateway = sg_routing_edge_by_name_or_null(gw_src);
385   e_route->dst_gateway = sg_routing_edge_by_name_or_null(gw_dst);
386   xbt_assert(current_routing->parse_bypassroute,
387              "Bypassing mechanism not implemented by routing '%s'",
388              current_routing->name);
389   current_routing->parse_bypassroute(current_routing, src, dst, e_route);
390   parsed_link_list = NULL;
391   src = NULL;
392   dst = NULL;
393   gw_src = NULL;
394   gw_dst = NULL;
395 }
396
397 /**
398  * \brief Make a new routing component to the platform
399  *
400  * Add a new autonomous system to the platform. Any elements (such as host,
401  * router or sub-AS) added after this call and before the corresponding call
402  * to sg_platf_new_AS_close() will be added to this AS.
403  *
404  * Once this function was called, the configuration concerning the used
405  * models cannot be changed anymore.
406  *
407  * @param AS_id name of this autonomous system. Must be unique in the platform
408  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
409  */
410 void routing_AS_begin(const char *AS_id, int wanted_routing_type)
411 {
412   AS_t new_as;
413   routing_model_description_t model = NULL;
414
415   xbt_assert(!xbt_lib_get_or_null
416              (as_router_lib, AS_id, ROUTING_ASR_LEVEL),
417              "The AS \"%s\" already exists", AS_id);
418
419   /* search the routing model */
420   switch(wanted_routing_type){
421     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
422     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
423     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
424     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
425     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
426     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
427     case A_surfxml_AS_routing_RuleBased:     model = &routing_models[SURF_MODEL_RULEBASED];break;
428     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
429   }
430
431   /* make a new routing component */
432   new_as = (AS_t) model->create();
433   new_as->model_desc = model;
434   new_as->hierarchy = SURF_ROUTING_NULL;
435   new_as->name = xbt_strdup(AS_id);
436
437   sg_routing_edge_t info = NULL;
438   info = xbt_new0(s_network_element_t, 1);
439
440   if (current_routing == NULL && routing_platf->root == NULL) {
441
442     /* it is the first one */
443     new_as->routing_father = NULL;
444     routing_platf->root = new_as;
445     info->id = -1;
446   } else if (current_routing != NULL && routing_platf->root != NULL) {
447
448     xbt_assert(!xbt_dict_get_or_null
449                (current_routing->routing_sons, AS_id),
450                "The AS \"%s\" already exists", AS_id);
451     /* it is a part of the tree */
452     new_as->routing_father = current_routing;
453     /* set the father behavior */
454     if (current_routing->hierarchy == SURF_ROUTING_NULL)
455       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
456     /* add to the sons dictionary */
457     xbt_dict_set(current_routing->routing_sons, AS_id,
458                  (void *) new_as, NULL);
459     /* add to the father element list */
460     info->id = current_routing->parse_AS(current_routing, (void *) info);
461   } else {
462     THROWF(arg_error, 0, "All defined components must be belong to a AS");
463   }
464
465   info->rc_component = new_as->routing_father;
466   info->rc_type = SURF_NETWORK_ELEMENT_AS;
467   info->name = new_as->name;
468
469   xbt_lib_set(as_router_lib, new_as->name, ROUTING_ASR_LEVEL,
470               (void *) info);
471   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
472
473   /* set the new current component of the tree */
474   current_routing = new_as;
475   current_routing->net_elem = info;
476
477 }
478
479 /**
480  * \brief Specify that the current description of AS is finished
481  *
482  * Once you've declared all the content of your AS, you have to close
483  * it with this call. Your AS is not usable until you call this function.
484  *
485  * @fixme: this call is not as robust as wanted: bad things WILL happen
486  * if you call it twice for the same AS, or if you forget calling it, or
487  * even if you add stuff to a closed AS
488  *
489  */
490 void routing_AS_end()
491 {
492
493   if (current_routing == NULL) {
494     THROWF(arg_error, 0, "Close an AS, but none was under construction");
495   } else {
496     if (current_routing->model_desc->end)
497       current_routing->model_desc->end(current_routing);
498     current_routing = current_routing->routing_father;
499   }
500 }
501
502 /* Aux Business methods */
503
504 /**
505  * \brief Get the AS father and the first elements of the chain
506  *
507  * \param src the source host name 
508  * \param dst the destination host name
509  * 
510  * Get the common father of the to processing units, and the first different 
511  * father in the chain
512  */
513 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
514                             AS_t * res_father,
515                             AS_t * res_src,
516                             AS_t * res_dst)
517 {
518   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
519 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
520   AS_t src_as, dst_as;
521   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
522   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
523   int index_src = 0;
524   int index_dst = 0;
525   AS_t current;
526   AS_t current_src;
527   AS_t current_dst;
528   AS_t father;
529
530   /* (1) find the as where the src and dst are located */
531   sg_routing_edge_t src_data = src;
532   sg_routing_edge_t dst_data = dst;
533   src_as = src_data->rc_component;
534   dst_as = dst_data->rc_component;
535 #ifndef NDEBUG
536   char* src_name = src_data->name;
537   char* dst_name = dst_data->name;
538 #endif
539
540   xbt_assert(src_as && dst_as,
541              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
542
543   /* (2) find the path to the root routing component */
544   for (current = src_as; current != NULL; current = current->routing_father) {
545     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
546       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
547     path_src[index_src++] = current;
548   }
549   for (current = dst_as; current != NULL; current = current->routing_father) {
550     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
551       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
552     path_dst[index_dst++] = current;
553   }
554
555   /* (3) find the common father */
556   do {
557     current_src = path_src[--index_src];
558     current_dst = path_dst[--index_dst];
559   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
560
561   /* (4) they are not in the same routing component, make the path */
562   if (current_src == current_dst)
563     father = current_src;
564   else
565     father = path_src[index_src + 1];
566
567   /* (5) result generation */
568   *res_father = father;         /* first the common father of src and dst */
569   *res_src = current_src;       /* second the first different father of src */
570   *res_dst = current_dst;       /* three  the first different father of dst */
571
572 #undef ELEMENTS_FATHER_MAXDEPTH
573 }
574
575 /* Global Business methods */
576
577 /**
578  * \brief Recursive function for get_route_latency
579  *
580  * \param src the source host name 
581  * \param dst the destination host name
582  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
583  * \param *latency the latency, if needed
584  * 
585  * This function is called by "get_route" and "get_latency". It allows to walk
586  * recursively through the ASes tree.
587  */
588 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
589                                    xbt_dynar_t * links, double *latency)
590 {
591   s_route_t route;
592   memset(&route,0,sizeof(route));
593
594   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
595   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
596
597   /* Find how src and dst are interconnected */
598   AS_t common_father, src_father, dst_father;
599   elements_father(src, dst, &common_father, &src_father, &dst_father);
600   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
601       common_father->name,src_father->name,dst_father->name);
602
603   /* Check whether a direct bypass is defined */
604   route_t e_route_bypass = NULL;
605   if (common_father->get_bypass_route)
606     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
607
608   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
609   if (e_route_bypass) {
610     xbt_dynar_merge(links, &e_route_bypass->link_list);
611     generic_free_route(e_route_bypass);
612     return;
613   }
614
615   /* If src and dst are in the same AS, life is good */
616   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
617     route.link_list = *links;
618     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
619     // if vivaldi latency+=vivaldi(src,dst)
620     return;
621   }
622
623   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
624
625   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
626   // Find the net_card corresponding to father
627   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
628   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
629
630   common_father->get_route_and_latency(common_father,
631                                        src_father_net_elm, dst_father_net_elm,
632                                        &route, latency);
633
634   xbt_assert((route.src_gateway != NULL) && (route.dst_gateway != NULL),
635       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
636
637   sg_routing_edge_t src_gateway_net_elm = route.src_gateway;
638   sg_routing_edge_t dst_gateway_net_elm = route.dst_gateway;
639
640   /* If source gateway is not our source, we have to recursively find our way up to this point */
641   if (src != src_gateway_net_elm)
642     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
643   xbt_dynar_merge(links, &route.link_list);
644
645   /* If dest gateway is not our destination, we have to recursively find our way from this point */
646   if (dst_gateway_net_elm != dst)
647     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
648
649   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
650 }
651
652 /**
653  * \brief Find a route between hosts
654  *
655  * \param src the network_element_t for src host
656  * \param dst the network_element_t for dst host
657  * \param route where to store the list of links.
658  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
659  * \param latency where to store the latency experienced on the path (or NULL if not interested)
660  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
661  * \pre route!=NULL
662  *
663  * walk through the routing components tree and find a route between hosts
664  * by calling the differents "get_route" functions in each routing component.
665  */
666 void routing_get_route_and_latency(sg_routing_edge_t src,
667                                    sg_routing_edge_t dst,
668                                    xbt_dynar_t * route, double *latency)
669 {
670   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
671   if (!*route) {
672     xbt_dynar_reset(routing_platf->last_route);
673     *route = routing_platf->last_route;
674   }
675
676   _get_route_and_latency(src, dst, route, latency);
677
678   xbt_assert(!latency || *latency >= 0.0,
679              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
680 }
681
682 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
683 {
684   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
685
686   //adding my one link routes
687   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
688   if (onelink_mine)
689     xbt_dynar_merge(&ret,&onelink_mine);
690
691   //recursing
692   char *key;
693   xbt_dict_cursor_t cursor = NULL;
694   AS_t rc_child;
695   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
696     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
697     if (onelink_child)
698       xbt_dynar_merge(&ret,&onelink_child);
699   }
700   return ret;
701 }
702
703 static xbt_dynar_t get_onelink_routes(void)
704 {
705   return recursive_get_onelink_routes(routing_platf->root);
706 }
707
708 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
709 {
710   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
711   if (rc)
712     return rc->rc_type;
713
714   return SURF_NETWORK_ELEMENT_NULL;
715 }
716
717 /**
718  * \brief Generic method: create the global routing schema
719  * 
720  * Make a global routing structure and set all the parsing functions.
721  */
722 void routing_model_create( void *loopback)
723 {
724   /* config the uniq global routing */
725   routing_platf = xbt_new0(s_routing_platf_t, 1);
726   routing_platf->root = NULL;
727   routing_platf->get_onelink_routes = get_onelink_routes;
728   routing_platf->loopback = loopback;
729   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
730   /* no current routing at moment */
731   current_routing = NULL;
732 }
733
734
735 /* ************************************************** */
736 /* ********** PATERN FOR NEW ROUTING **************** */
737
738 /* The minimal configuration of a new routing model need the next functions,
739  * also you need to set at the start of the file, the new model in the model
740  * list. Remember keep the null ending of the list.
741  */
742 /*** Routing model structure ***/
743 // typedef struct {
744 //   s_routing_component_t generic_routing;
745 //   /* things that your routing model need */
746 // } s_routing_component_NEW_t,*routing_component_NEW_t;
747
748 /*** Parse routing model functions ***/
749 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
750 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
751 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
752 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
753 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
754
755 /*** Business methods ***/
756 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
757 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
758 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
759
760 /*** Creation routing model functions ***/
761 // static void* model_NEW_create(void) {
762 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
763 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
764 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
765 //   new_component->generic_routing.set_route = model_NEW_set_route;
766 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
767 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
768 //   new_component->generic_routing.get_route = NEW_get_route;
769 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
770 //   new_component->generic_routing.finalize = NEW_finalize;
771 //   /* initialization of internal structures */
772 //   return new_component;
773 // } /* mandatory */
774 // static void  model_NEW_load(void) {}   /* mandatory */
775 // static void  model_NEW_unload(void) {} /* mandatory */
776 // static void  model_NEW_end(void) {}    /* mandatory */
777
778 /* ************************************************************************** */
779 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
780
781 void routing_cluster_add_backbone(void* bb) {
782   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
783         "You have to be in model Cluster to use tag backbone!");
784   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
785   ((as_cluster_t)current_routing)->backbone = bb;
786   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
787 }
788
789 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
790 {
791   int start, end, i;
792   char *groups , *host_id , *link_id = NULL;
793   unsigned int iter;
794   xbt_dynar_t radical_elements;
795   xbt_dynar_t radical_ends;
796
797   //Make all hosts
798   radical_elements = xbt_str_split(cabinet->radical, ",");
799   xbt_dynar_foreach(radical_elements, iter, groups) {
800
801     radical_ends = xbt_str_split(groups, "-");
802     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
803
804     switch (xbt_dynar_length(radical_ends)) {
805     case 1:
806       end = start;
807       break;
808     case 2:
809       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
810       break;
811     default:
812       surf_parse_error("Malformed radical");
813       break;
814     }
815     s_sg_platf_host_cbarg_t host;
816     memset(&host, 0, sizeof(host));
817     host.initial_state = SURF_RESOURCE_ON;
818     host.power_peak = cabinet->power;
819     host.power_scale = 1.0;
820     host.core_amount = 1;
821
822     s_sg_platf_link_cbarg_t link;
823     memset(&link, 0, sizeof(link));
824     link.state = SURF_RESOURCE_ON;
825     link.policy = SURF_LINK_FULLDUPLEX;
826     link.latency = cabinet->lat;
827     link.bandwidth = cabinet->bw;
828
829     s_sg_platf_host_link_cbarg_t host_link;
830     memset(&host_link, 0, sizeof(host_link));
831
832     for (i = start; i <= end; i++) {
833       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
834       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
835       host.id = host_id;
836       link.id = link_id;
837       sg_platf_new_host(&host);
838       sg_platf_new_link(&link);
839
840       char* link_up = bprintf("%s_UP",link_id);
841       char* link_down = bprintf("%s_DOWN",link_id);
842       host_link.id = host_id;
843       host_link.link_up = link_up;
844       host_link.link_down= link_down;
845       sg_platf_new_host_link(&host_link);
846
847       free(host_id);
848       free(link_id);
849       free(link_up);
850       free(link_down);
851     }
852
853     xbt_dynar_free(&radical_ends);
854   }
855   xbt_dynar_free(&radical_elements);
856 }
857
858 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
859 {
860   char *host_id, *groups, *link_id = NULL;
861   xbt_dict_t patterns = NULL;
862
863   s_sg_platf_host_cbarg_t host;
864   s_sg_platf_link_cbarg_t link;
865
866   unsigned int iter;
867   int start, end, i;
868   xbt_dynar_t radical_elements;
869   xbt_dynar_t radical_ends;
870
871   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
872       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
873     patterns = xbt_dict_new_homogeneous(xbt_free_f);
874     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
875     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
876     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
877   }
878
879   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
880   sg_platf_new_AS_begin(cluster->id, A_surfxml_AS_routing_Cluster);
881
882   current_routing->link_up_down_list
883             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
884
885   //Make all hosts
886   radical_elements = xbt_str_split(cluster->radical, ",");
887   xbt_dynar_foreach(radical_elements, iter, groups) {
888
889     radical_ends = xbt_str_split(groups, "-");
890     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
891
892     switch (xbt_dynar_length(radical_ends)) {
893     case 1:
894       end = start;
895       break;
896     case 2:
897       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
898       break;
899     default:
900       surf_parse_error("Malformed radical");
901       break;
902     }
903     for (i = start; i <= end; i++) {
904       host_id =
905           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
906       link_id = bprintf("%s_link_%d", cluster->id, i);
907
908       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
909
910       memset(&host, 0, sizeof(host));
911       host.id = host_id;
912       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
913         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
914         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
915         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
916         host.power_trace = tmgr_trace_new_from_file(avail_file);
917         xbt_free(avail_file);
918       } else {
919         XBT_DEBUG("\tavailability_file=\"\"");
920       }
921
922       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
923         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
924         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
925         host.state_trace = tmgr_trace_new_from_file(avail_file);
926         xbt_free(avail_file);
927       } else {
928         XBT_DEBUG("\tstate_file=\"\"");
929       }
930
931       host.power_peak = cluster->power;
932       host.power_scale = 1.0;
933       host.core_amount = cluster->core_amount;
934       host.initial_state = SURF_RESOURCE_ON;
935       host.coord = "";
936       sg_platf_new_host(&host);
937       XBT_DEBUG("</host>");
938
939       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
940                 cluster->bw, cluster->lat);
941
942       memset(&link, 0, sizeof(link));
943       link.id = link_id;
944       link.bandwidth = cluster->bw;
945       link.latency = cluster->lat;
946       link.state = SURF_RESOURCE_ON;
947       link.policy = cluster->sharing_policy;
948       sg_platf_new_link(&link);
949
950       s_surf_parsing_link_up_down_t info;
951
952       if (link.policy == SURF_LINK_FULLDUPLEX) {
953         char *tmp_link = bprintf("%s_UP", link_id);
954         info.link_up =
955             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
956         free(tmp_link);
957         tmp_link = bprintf("%s_DOWN", link_id);
958         info.link_down =
959             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
960         free(tmp_link);
961       } else {
962         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
963         info.link_down = info.link_up;
964       }
965       xbt_dynar_push(current_routing->link_up_down_list,&info);
966       xbt_free(link_id);
967       xbt_free(host_id);
968     }
969
970     xbt_dynar_free(&radical_ends);
971   }
972   xbt_dynar_free(&radical_elements);
973
974   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
975   // and it's very useful to connect clusters together
976   XBT_DEBUG(" ");
977   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
978   char *newid = NULL;
979   s_sg_platf_router_cbarg_t router;
980   memset(&router, 0, sizeof(router));
981   router.id = cluster->router_id;
982   router.coord = "";
983   if (!router.id || !strcmp(router.id, ""))
984     router.id = newid =
985         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
986                 cluster->suffix);
987   sg_platf_new_router(&router);
988   free(newid);
989
990   //Make the backbone
991   if ((cluster->bb_bw != 0) && (cluster->bb_lat != 0)) {
992     char *link_backbone = bprintf("%s_backbone", cluster->id);
993     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
994               cluster->bb_bw, cluster->bb_lat);
995
996     memset(&link, 0, sizeof(link));
997     link.id = link_backbone;
998     link.bandwidth = cluster->bb_bw;
999     link.latency = cluster->bb_lat;
1000     link.state = SURF_RESOURCE_ON;
1001     link.policy = cluster->bb_sharing_policy;
1002
1003     sg_platf_new_link(&link);
1004
1005     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
1006
1007     free(link_backbone);
1008   }
1009
1010   XBT_DEBUG("</AS>");
1011   sg_platf_new_AS_end();
1012   XBT_DEBUG(" ");
1013   xbt_dict_free(&patterns); // no op if it were never set
1014 }
1015
1016 static void routing_parse_postparse(void) {
1017   xbt_dict_free(&random_value);
1018 }
1019
1020 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1021 {
1022   char *host_id = NULL;
1023   char *link_id;
1024
1025   XBT_DEBUG(" ");
1026   host_id = HOST_PEER(peer->id);
1027   link_id = LINK_PEER(peer->id);
1028
1029   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1030   s_sg_platf_host_cbarg_t host;
1031   memset(&host, 0, sizeof(host));
1032   host.initial_state = SURF_RESOURCE_ON;
1033   host.id = host_id;
1034   host.power_peak = peer->power;
1035   host.power_scale = 1.0;
1036   host.power_trace = peer->availability_trace;
1037   host.state_trace = peer->state_trace;
1038   host.core_amount = 1;
1039   host.coord = peer->coord;
1040   sg_platf_new_host(&host);
1041
1042   s_sg_platf_link_cbarg_t link;
1043   memset(&link, 0, sizeof(link));
1044   link.state = SURF_RESOURCE_ON;
1045   link.policy = SURF_LINK_SHARED;
1046   link.latency = peer->lat;
1047
1048   char* link_up = bprintf("%s_UP",link_id);
1049   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1050             peer->bw_out, peer->lat);
1051   link.id = link_up;
1052   link.bandwidth = peer->bw_out;
1053   sg_platf_new_link(&link);
1054
1055   char* link_down = bprintf("%s_DOWN",link_id);
1056   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1057             peer->bw_in, peer->lat);
1058   link.id = link_down;
1059   link.bandwidth = peer->bw_in;
1060   sg_platf_new_link(&link);
1061
1062   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1063   s_sg_platf_host_link_cbarg_t host_link;
1064   memset(&host_link, 0, sizeof(host_link));
1065   host_link.id = host_id;
1066   host_link.link_up = link_up;
1067   host_link.link_down= link_down;
1068   sg_platf_new_host_link(&host_link);
1069
1070   XBT_DEBUG(" ");
1071
1072   //xbt_dynar_free(&tab_elements_num);
1073   free(host_id);
1074   free(link_id);
1075   free(link_up);
1076   free(link_down);
1077 }
1078
1079 static void routing_parse_Srandom(void)
1080 {
1081   double mean, std, min, max, seed;
1082   char *random_id = A_surfxml_random_id;
1083   char *random_radical = A_surfxml_random_radical;
1084   char *rd_name = NULL;
1085   char *rd_value;
1086   mean = surf_parse_get_double(A_surfxml_random_mean);
1087   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1088   min = surf_parse_get_double(A_surfxml_random_min);
1089   max = surf_parse_get_double(A_surfxml_random_max);
1090   seed = surf_parse_get_double(A_surfxml_random_seed);
1091
1092   double res = 0;
1093   int i = 0;
1094   random_data_t random = xbt_new0(s_random_data_t, 1);
1095   char *tmpbuf;
1096
1097   xbt_dynar_t radical_elements;
1098   unsigned int iter;
1099   char *groups;
1100   int start, end;
1101   xbt_dynar_t radical_ends;
1102
1103   switch (A_surfxml_random_generator) {
1104   case AU_surfxml_random_generator:
1105   case A_surfxml_random_generator_NONE:
1106     random->generator = NONE;
1107     break;
1108   case A_surfxml_random_generator_DRAND48:
1109     random->generator = DRAND48;
1110     break;
1111   case A_surfxml_random_generator_RAND:
1112     random->generator = RAND;
1113     break;
1114   case A_surfxml_random_generator_RNGSTREAM:
1115     random->generator = RNGSTREAM;
1116     break;
1117   default:
1118     surf_parse_error("Invalid random generator");
1119     break;
1120   }
1121   random->seed = seed;
1122   random->min = min;
1123   random->max = max;
1124
1125   /* Check user stupidities */
1126   if (max < min)
1127     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1128   if (mean < min)
1129     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1130   if (mean > max)
1131     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1132
1133   /* normalize the mean and standard deviation before storing */
1134   random->mean = (mean - min) / (max - min);
1135   random->std = std / (max - min);
1136
1137   if (random->mean * (1 - random->mean) < random->std * random->std)
1138     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1139            random->mean, random->std);
1140
1141   XBT_DEBUG
1142       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1143        random_id, random->min, random->max, random->mean, random->std,
1144        (int)random->generator, random->seed, random_radical);
1145
1146   if (!random_value)
1147     random_value = xbt_dict_new_homogeneous(free);
1148
1149   if (!strcmp(random_radical, "")) {
1150     res = random_generate(random);
1151     rd_value = bprintf("%f", res);
1152     xbt_dict_set(random_value, random_id, rd_value, NULL);
1153   } else {
1154     radical_elements = xbt_str_split(random_radical, ",");
1155     xbt_dynar_foreach(radical_elements, iter, groups) {
1156       radical_ends = xbt_str_split(groups, "-");
1157       switch (xbt_dynar_length(radical_ends)) {
1158       case 1:
1159         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1160                    "Custom Random '%s' already exists !", random_id);
1161         res = random_generate(random);
1162         tmpbuf =
1163             bprintf("%s%d", random_id,
1164                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1165         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1166         xbt_free(tmpbuf);
1167         break;
1168
1169       case 2:
1170         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1171         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1172         for (i = start; i <= end; i++) {
1173           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1174                      "Custom Random '%s' already exists !", bprintf("%s%d",
1175                                                                     random_id,
1176                                                                     i));
1177           res = random_generate(random);
1178           tmpbuf = bprintf("%s%d", random_id, i);
1179           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1180           xbt_free(tmpbuf);
1181         }
1182         break;
1183       default:
1184         XBT_CRITICAL("Malformed radical");
1185         break;
1186       }
1187       res = random_generate(random);
1188       rd_name = bprintf("%s_router", random_id);
1189       rd_value = bprintf("%f", res);
1190       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1191
1192       xbt_dynar_free(&radical_ends);
1193     }
1194     free(rd_name);
1195     xbt_dynar_free(&radical_elements);
1196   }
1197 }
1198
1199 void routing_register_callbacks()
1200 {
1201   sg_platf_host_add_cb(parse_S_host);
1202   sg_platf_router_add_cb(parse_S_router);
1203   sg_platf_host_link_add_cb(parse_S_host_link);
1204
1205   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1206
1207   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1208   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1209   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1210                        &routing_parse_S_bypassRoute);
1211   surfxml_add_callback(STag_surfxml_bypassASroute_cb_list,
1212                        &routing_parse_S_bypassASroute);
1213
1214   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1215   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1216   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1217                        &routing_parse_E_bypassRoute);
1218   surfxml_add_callback(ETag_surfxml_bypassASroute_cb_list,
1219                        &routing_parse_E_bypassASroute);
1220
1221   sg_platf_cluster_add_cb(routing_parse_cluster);
1222   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1223
1224   sg_platf_peer_add_cb(routing_parse_peer);
1225   sg_platf_postparse_add_cb(routing_parse_postparse);
1226
1227   sg_platf_linkctn_add_cb(routing_parse_link_ctn);
1228
1229   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1230   sg_platf_AS_end_add_cb(routing_AS_end);
1231   sg_platf_AS_begin_add_cb(routing_AS_begin);
1232
1233 #ifdef HAVE_TRACING
1234   instr_routing_define_callbacks();
1235 #endif
1236 }
1237
1238 /**
1239  * \brief Recursive function for finalize
1240  *
1241  * \param rc the source host name
1242  *
1243  * This fuction is call by "finalize". It allow to finalize the
1244  * AS or routing components. It delete all the structures.
1245  */
1246 static void finalize_rec(AS_t as) {
1247   xbt_dict_cursor_t cursor = NULL;
1248   char *key;
1249   AS_t elem;
1250
1251   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1252     finalize_rec(elem);
1253   }
1254
1255   as->finalize(as);
1256 }
1257
1258 /** \brief Frees all memory allocated by the routing module */
1259 void routing_exit(void) {
1260   if (!routing_platf)
1261     return;
1262   xbt_dynar_free(&routing_platf->last_route);
1263   finalize_rec(routing_platf->root);
1264   xbt_free(routing_platf);
1265 }