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[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 xbt_lib_t host_lib;
16 int ROUTING_HOST_LEVEL;         //Routing level
17 int SURF_CPU_LEVEL;             //Surf cpu level
18 int SURF_WKS_LEVEL;             //Surf workstation level
19 int SIMIX_HOST_LEVEL;           //Simix level
20 int MSG_HOST_LEVEL;             //Msg level
21 int SD_HOST_LEVEL;              //Simdag level
22 int COORD_HOST_LEVEL;           //Coordinates level
23 int NS3_HOST_LEVEL;             //host node for ns3
24
25 xbt_lib_t link_lib;
26 int SD_LINK_LEVEL;              //Simdag level
27 int SURF_LINK_LEVEL;            //Surf level
28 int NS3_LINK_LEVEL;             //link for ns3
29
30 xbt_lib_t as_router_lib;
31 int ROUTING_ASR_LEVEL;          //Routing level
32 int COORD_ASR_LEVEL;            //Coordinates level
33 int NS3_ASR_LEVEL;              //host node for ns3
34
35 static xbt_dict_t random_value = NULL;
36
37 /* Global vars */
38 routing_global_t global_routing = NULL;
39 AS_t current_routing = NULL;
40
41 /* global parse functions */
42 xbt_dynar_t link_list = NULL;   /* temporary store of current list link of a route */
43 static const char *src = NULL;  /* temporary store the source name of a route */
44 static const char *dst = NULL;  /* temporary store the destination name of a route */
45 static char *gw_src = NULL;     /* temporary store the gateway source name of a route */
46 static char *gw_dst = NULL;     /* temporary store the gateway destination name of a route */
47
48 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
49
50 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
51 static void routing_parse_Srandom(void);        /* random bypass */
52
53 static char *replace_random_parameter(char *chaine);
54 static void routing_parse_postparse(void);
55
56 /* this lines are only for replace use like index in the model table */
57 typedef enum {
58   SURF_MODEL_FULL = 0,
59   SURF_MODEL_FLOYD,
60   SURF_MODEL_DIJKSTRA,
61   SURF_MODEL_DIJKSTRACACHE,
62   SURF_MODEL_NONE,
63   SURF_MODEL_RULEBASED,
64   SURF_MODEL_VIVALDI,
65   SURF_MODEL_CLUSTER
66 } e_routing_types;
67
68 struct s_model_type routing_models[] = {
69   {"Full",
70    "Full routing data (fast, large memory requirements, fully expressive)",
71    model_full_create, model_full_end},
72   {"Floyd",
73    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
74    model_floyd_create, model_floyd_end},
75   {"Dijkstra",
76    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
77    model_dijkstra_create, model_dijkstra_both_end},
78   {"DijkstraCache",
79    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
80    model_dijkstracache_create, model_dijkstra_both_end},
81   {"none", "No routing (usable with Constant network only)",
82    model_none_create,  NULL},
83   {"RuleBased", "Rule-Based routing data (...)",
84    model_rulebased_create, NULL},
85   {"Vivaldi", "Vivaldi routing",
86    model_vivaldi_create, NULL},
87   {"Cluster", "Cluster routing",
88    model_cluster_create, NULL},
89   {NULL, NULL, NULL, NULL}
90 };
91
92 /**
93  * \brief Add a "host" to the network element list
94  */
95 static void parse_S_host(sg_platf_host_cbarg_t host)
96 {
97   network_element_info_t info = NULL;
98   if (current_routing->hierarchy == SURF_ROUTING_NULL)
99     current_routing->hierarchy = SURF_ROUTING_BASE;
100   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
101              "Reading a host, processing unit \"%s\" already exists", host->id);
102
103   (*(current_routing->parse_PU)) (current_routing, host->id);
104   info = xbt_new0(s_network_element_info_t, 1);
105   info->rc_component = current_routing;
106   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
107   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
108   if (host->coord && strcmp(host->coord, "")) {
109     if (!COORD_HOST_LEVEL)
110       xbt_die
111           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
112     xbt_dynar_t ctn = xbt_str_split_str(host->coord, " ");
113     xbt_dynar_shrink(ctn, 0);
114     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
115   }
116 }
117
118 /**
119  * \brief Add a "router" to the network element list
120  */
121 static void parse_S_router(sg_platf_router_cbarg_t router)
122 {
123   network_element_info_t info = NULL;
124   if (current_routing->hierarchy == SURF_ROUTING_NULL)
125     current_routing->hierarchy = SURF_ROUTING_BASE;
126   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
127              "Reading a router, processing unit \"%s\" already exists",
128              router->id);
129
130   (*(current_routing->parse_PU)) (current_routing, router->id);
131   info = xbt_new0(s_network_element_info_t, 1);
132   info->rc_component = current_routing;
133   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
134
135   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
136   if (strcmp(router->coord, "")) {
137     if (!COORD_ASR_LEVEL)
138       xbt_die
139           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
140     xbt_dynar_t ctn = xbt_str_split_str(router->coord, " ");
141     xbt_dynar_shrink(ctn, 0);
142     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
143   }
144 }
145
146
147 /**
148  * \brief Set the end points for a route
149  */
150 static void routing_parse_S_route(void)
151 {
152   if (src != NULL && dst != NULL && link_list != NULL)
153     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
154            A_surfxml_route_src, A_surfxml_route_dst);
155   src = A_surfxml_route_src;
156   dst = A_surfxml_route_dst;
157   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
158              "Some limits are null in the route between \"%s\" and \"%s\"",
159              src, dst);
160   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
161 }
162
163 /**
164  * \brief Set the end points and gateways for a ASroute
165  */
166 static void routing_parse_S_ASroute(void)
167 {
168   if (src != NULL && dst != NULL && link_list != NULL)
169     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
170            A_surfxml_ASroute_src, A_surfxml_ASroute_dst);
171   src = A_surfxml_ASroute_src;
172   dst = A_surfxml_ASroute_dst;
173   gw_src = A_surfxml_ASroute_gw_src;
174   gw_dst = A_surfxml_ASroute_gw_dst;
175   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
176              || strlen(gw_dst) > 0,
177              "Some limits are null in the route between \"%s\" and \"%s\"",
178              src, dst);
179   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
180 }
181
182 /**
183  * \brief Set the end points for a bypassRoute
184  */
185 static void routing_parse_S_bypassRoute(void)
186 {
187   if (src != NULL && dst != NULL && link_list != NULL)
188     THROWF(arg_error, 0,
189            "Bypass Route between %s to %s can not be defined",
190            A_surfxml_bypassRoute_src, A_surfxml_bypassRoute_dst);
191   src = A_surfxml_bypassRoute_src;
192   dst = A_surfxml_bypassRoute_dst;
193   gw_src = A_surfxml_bypassRoute_gw_src;
194   gw_dst = A_surfxml_bypassRoute_gw_dst;
195   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
196              || strlen(gw_dst) > 0,
197              "Some limits are null in the route between \"%s\" and \"%s\"",
198              src, dst);
199   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
200 }
201
202 /**
203  * \brief Set a new link on the actual list of link for a route or ASroute from XML
204  */
205
206 static void routing_parse_link_ctn(void)
207 {
208   char *link_id;
209   switch (A_surfxml_link_ctn_direction) {
210   case AU_surfxml_link_ctn_direction:
211   case A_surfxml_link_ctn_direction_NONE:
212     link_id = xbt_strdup(A_surfxml_link_ctn_id);
213     break;
214   case A_surfxml_link_ctn_direction_UP:
215     link_id = bprintf("%s_UP", A_surfxml_link_ctn_id);
216     break;
217   case A_surfxml_link_ctn_direction_DOWN:
218     link_id = bprintf("%s_DOWN", A_surfxml_link_ctn_id);
219     break;
220   }
221   xbt_dynar_push(link_list, &link_id);
222 }
223
224 /**
225  * \brief Store the route by calling the set_route function of the current routing component
226  */
227 static void routing_parse_E_route(void)
228 {
229   route_extended_t route = xbt_new0(s_route_extended_t, 1);
230   route->generic_route.link_list = link_list;
231   xbt_assert(current_routing->parse_route,
232              "no defined method \"set_route\" in \"%s\"",
233              current_routing->name);
234   (*(current_routing->parse_route)) (current_routing, src, dst, route);
235   link_list = NULL;
236   src = NULL;
237   dst = NULL;
238 }
239
240 /**
241  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
242  */
243 static void routing_parse_E_ASroute(void)
244 {
245   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
246   e_route->generic_route.link_list = link_list;
247   e_route->src_gateway = xbt_strdup(gw_src);
248   e_route->dst_gateway = xbt_strdup(gw_dst);
249   xbt_assert(current_routing->parse_ASroute,
250              "no defined method \"set_ASroute\" in \"%s\"",
251              current_routing->name);
252   (*(current_routing->parse_ASroute)) (current_routing, src, dst, e_route);
253   link_list = NULL;
254   src = NULL;
255   dst = NULL;
256   gw_src = NULL;
257   gw_dst = NULL;
258 }
259
260 /**
261  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
262  */
263 static void routing_parse_E_bypassRoute(void)
264 {
265   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
266   e_route->generic_route.link_list = link_list;
267   e_route->src_gateway = xbt_strdup(gw_src);
268   e_route->dst_gateway = xbt_strdup(gw_dst);
269   xbt_assert(current_routing->parse_bypassroute,
270              "Bypassing mechanism not implemented by routing '%s'",
271              current_routing->name);
272   (*(current_routing->parse_bypassroute)) (current_routing, src, dst, e_route);
273   link_list = NULL;
274   src = NULL;
275   dst = NULL;
276   gw_src = NULL;
277   gw_dst = NULL;
278 }
279
280 /**
281  * \brief Make a new routing component to the platform
282  *
283  * Add a new autonomous system to the platform. Any elements (such as host,
284  * router or sub-AS) added after this call and before the corresponding call
285  * to sg_platf_new_AS_close() will be added to this AS.
286  *
287  * Once this function was called, the configuration concerning the used
288  * models cannot be changed anymore.
289  *
290  * @param AS_id name of this autonomous system. Must be unique in the platform
291  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
292  */
293 void routing_AS_begin(const char *AS_id, const char *wanted_routing_type)
294 {
295   AS_t new_routing;
296   routing_model_description_t model = NULL;
297   int cpt;
298
299   /* search the routing model */
300   for (cpt = 0; routing_models[cpt].name; cpt++)
301     if (!strcmp(wanted_routing_type, routing_models[cpt].name))
302       model = &routing_models[cpt];
303   /* if its not exist, error */
304   if (model == NULL) {
305     fprintf(stderr, "Routing model %s not found. Existing models:\n",
306             wanted_routing_type);
307     for (cpt = 0; routing_models[cpt].name; cpt++)
308       fprintf(stderr, "   %s: %s\n", routing_models[cpt].name,
309               routing_models[cpt].desc);
310     xbt_die(NULL);
311   }
312
313   /* make a new routing component */
314   new_routing = (AS_t) (*(model->create)) ();
315   new_routing->routing = model;
316   new_routing->hierarchy = SURF_ROUTING_NULL;
317   new_routing->name = xbt_strdup(AS_id);
318   new_routing->routing_sons = xbt_dict_new();
319
320   if (current_routing == NULL && global_routing->root == NULL) {
321
322     /* it is the first one */
323     new_routing->routing_father = NULL;
324     global_routing->root = new_routing;
325
326   } else if (current_routing != NULL && global_routing->root != NULL) {
327
328     xbt_assert(!xbt_dict_get_or_null
329                (current_routing->routing_sons, AS_id),
330                "The AS \"%s\" already exists", AS_id);
331     /* it is a part of the tree */
332     new_routing->routing_father = current_routing;
333     /* set the father behavior */
334     if (current_routing->hierarchy == SURF_ROUTING_NULL)
335       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
336     /* add to the sons dictionary */
337     xbt_dict_set(current_routing->routing_sons, AS_id,
338                  (void *) new_routing, NULL);
339     /* add to the father element list */
340     (*(current_routing->parse_AS)) (current_routing, AS_id);
341   } else {
342     THROWF(arg_error, 0, "All defined components must be belong to a AS");
343   }
344   /* set the new current component of the tree */
345   current_routing = new_routing;
346 }
347
348 /**
349  * \brief Specify that the current description of AS is finished
350  *
351  * Once you've declared all the content of your AS, you have to close
352  * it with this call. Your AS is not usable until you call this function.
353  *
354  * @fixme: this call is not as robust as wanted: bad things WILL happen
355  * if you call it twice for the same AS, or if you forget calling it, or
356  * even if you add stuff to a closed AS
357  *
358  */
359 void routing_AS_end()
360 {
361
362   if (current_routing == NULL) {
363     THROWF(arg_error, 0, "Close an AS, but none was under construction");
364   } else {
365     network_element_info_t info = NULL;
366     xbt_assert(!xbt_lib_get_or_null
367                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
368                "The AS \"%s\" already exists", current_routing->name);
369     info = xbt_new0(s_network_element_info_t, 1);
370     info->rc_component = current_routing->routing_father;
371     info->rc_type = SURF_NETWORK_ELEMENT_AS;
372     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
373                 (void *) info);
374
375     if (current_routing->routing->end)
376       (*(current_routing->routing->end)) (current_routing);
377     current_routing = current_routing->routing_father;
378   }
379 }
380
381 /* Aux Business methods */
382
383 /**
384  * \brief Get the AS father and the first elements of the chain
385  *
386  * \param src the source host name 
387  * \param dst the destination host name
388  * 
389  * Get the common father of the to processing units, and the first different 
390  * father in the chain
391  */
392 static void elements_father(const char *src, const char *dst,
393                             AS_t * res_father,
394                             AS_t * res_src,
395                             AS_t * res_dst)
396 {
397   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
398 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
399   AS_t src_as, dst_as;
400   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
401   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
402   int index_src = 0;
403   int index_dst = 0;
404   AS_t current;
405   AS_t current_src;
406   AS_t current_dst;
407   AS_t father;
408
409   /* (1) find the as where the src and dst are located */
410   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
411                                                         ROUTING_HOST_LEVEL);
412   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
413                                                         ROUTING_HOST_LEVEL);
414   if (!src_data)
415     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
416   if (!dst_data)
417     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
418   src_as = src_data->rc_component;
419   dst_as = dst_data->rc_component;
420
421   xbt_assert(src_as && dst_as,
422              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
423
424   /* (2) find the path to the root routing component */
425   for (current = src_as; current != NULL; current = current->routing_father) {
426     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
427       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
428     path_src[index_src++] = current;
429   }
430   for (current = dst_as; current != NULL; current = current->routing_father) {
431     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
432       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
433     path_dst[index_dst++] = current;
434   }
435
436   /* (3) find the common father */
437   do {
438     current_src = path_src[--index_src];
439     current_dst = path_dst[--index_dst];
440   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
441
442   /* (4) they are not in the same routing component, make the path */
443   if (current_src == current_dst)
444     father = current_src;
445   else
446     father = path_src[index_src + 1];
447
448   /* (5) result generation */
449   *res_father = father;         /* first the common father of src and dst */
450   *res_src = current_src;       /* second the first different father of src */
451   *res_dst = current_dst;       /* three  the first different father of dst */
452
453 #undef ELEMENTS_FATHER_MAXDEPTH
454 }
455
456 /* Global Business methods */
457
458 /**
459  * \brief Recursive function for get_route_latency
460  *
461  * \param src the source host name 
462  * \param dst the destination host name
463  * \param *e_route the route where the links are stored
464  * \param *latency the latency, if needed
465  * 
466  * This function is called by "get_route" and "get_latency". It allows to walk
467  * recursively through the routing components tree.
468  */
469 static void _get_route_latency(const char *src, const char *dst,
470                                xbt_dynar_t * route, double *latency)
471 {
472   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
473   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
474
475   AS_t common_father;
476   AS_t src_father;
477   AS_t dst_father;
478   elements_father(src, dst, &common_father, &src_father, &dst_father);
479
480   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
481
482     route_extended_t e_route = NULL;
483     if (route) {
484       e_route = common_father->get_route(common_father, src, dst);
485       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
486       *route = e_route->generic_route.link_list;
487     }
488     if (latency) {
489       *latency = common_father->get_latency(common_father, src, dst, e_route);
490       xbt_assert(*latency >= 0.0,
491                  "latency error on route between \"%s\" and \"%s\"", src, dst);
492     }
493     if (e_route) {
494       xbt_free(e_route->src_gateway);
495       xbt_free(e_route->dst_gateway);
496       xbt_free(e_route);
497     }
498
499   } else {                      /* SURF_ROUTING_RECURSIVE */
500
501     route_extended_t e_route_bypass = NULL;
502     if (common_father->get_bypass_route)
503       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
504
505     xbt_assert(!latency || !e_route_bypass,
506                "Bypass cannot work yet with get_latency");
507
508     route_extended_t e_route_cnt = e_route_bypass
509         ? e_route_bypass : common_father->get_route(common_father,
510                                                     src_father->name,
511                                                     dst_father->name);
512
513     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
514                src_father->name, dst_father->name);
515
516     xbt_assert((e_route_cnt->src_gateway == NULL) ==
517                (e_route_cnt->dst_gateway == NULL),
518                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
519
520     if (route) {
521       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
522     }
523     if (latency) {
524       *latency = common_father->get_latency(common_father,
525                                             src_father->name, dst_father->name,
526                                             e_route_cnt);
527       xbt_assert(*latency >= 0.0,
528                  "latency error on route between \"%s\" and \"%s\"",
529                  src_father->name, dst_father->name);
530     }
531
532     void *link;
533     unsigned int cpt;
534
535     if (strcmp(src, e_route_cnt->src_gateway)) {
536       double latency_src;
537       xbt_dynar_t route_src;
538
539       _get_route_latency(src, e_route_cnt->src_gateway,
540                          (route ? &route_src : NULL),
541                          (latency ? &latency_src : NULL));
542       if (route) {
543         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
544                    src, e_route_cnt->src_gateway);
545         xbt_dynar_foreach(route_src, cpt, link) {
546           xbt_dynar_push(*route, &link);
547         }
548         xbt_dynar_free(&route_src);
549       }
550       if (latency) {
551         xbt_assert(latency_src >= 0.0,
552                    "latency error on route between \"%s\" and \"%s\"",
553                    src, e_route_cnt->src_gateway);
554         *latency += latency_src;
555       }
556     }
557
558     if (route) {
559       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
560         xbt_dynar_push(*route, &link);
561       }
562     }
563
564     if (strcmp(e_route_cnt->dst_gateway, dst)) {
565       double latency_dst;
566       xbt_dynar_t route_dst;
567
568       _get_route_latency(e_route_cnt->dst_gateway, dst,
569                          (route ? &route_dst : NULL),
570                          (latency ? &latency_dst : NULL));
571       if (route) {
572         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
573                    e_route_cnt->dst_gateway, dst);
574         xbt_dynar_foreach(route_dst, cpt, link) {
575           xbt_dynar_push(*route, &link);
576         }
577         xbt_dynar_free(&route_dst);
578       }
579       if (latency) {
580         xbt_assert(latency_dst >= 0.0,
581                    "latency error on route between \"%s\" and \"%s\"",
582                    e_route_cnt->dst_gateway, dst);
583         *latency += latency_dst;
584       }
585     }
586
587     generic_free_extended_route(e_route_cnt);
588   }
589 }
590
591 /**
592  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
593  */
594 static void get_route_latency(const char *src, const char *dst,
595                               xbt_dynar_t * route, double *latency, int cleanup)
596 {
597   _get_route_latency(src, dst, route, latency);
598   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
599   xbt_assert(!latency || *latency >= 0.0,
600              "latency error on route between \"%s\" and \"%s\"", src, dst);
601   if (route) {
602     xbt_dynar_free(&global_routing->last_route);
603     global_routing->last_route = cleanup ? *route : NULL;
604   }
605 }
606
607 /**
608  * \brief Find a route between hosts
609  *
610  * \param src the source host name 
611  * \param dst the destination host name
612  * 
613  * walk through the routing components tree and find a route between hosts
614  * by calling the differents "get_route" functions in each routing component.
615  * No need to free the returned dynar. It will be freed at the next call.
616  */
617 xbt_dynar_t routing_get_route(const char *src, const char *dst) {
618   xbt_dynar_t route = NULL;
619   get_route_latency(src, dst, &route, NULL, 1);
620   return route;
621 }
622
623 /**
624  * \brief Generic method: find a route between hosts
625  *
626  * \param src the source host name
627  * \param dst the destination host name
628  *
629  * same as get_route, but return NULL if any exception is raised.
630  */
631 static xbt_dynar_t get_route_or_null(const char *src, const char *dst)
632 {
633   xbt_dynar_t route = NULL;
634   xbt_ex_t exception;
635   TRY {
636     get_route_latency(src, dst, &route, NULL, 1);
637   } CATCH(exception) {
638     xbt_ex_free(exception);
639     return NULL;
640   }
641   return route;
642 }
643
644 /**
645  * \brief Generic method: find a route between hosts
646  *
647  * \param src the source host name
648  * \param dst the destination host name
649  *
650  * walk through the routing components tree and find a route between hosts
651  * by calling the differents "get_route" functions in each routing component.
652  * Leaves the caller the responsability to clean the returned dynar.
653  */
654 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
655 {
656   xbt_dynar_t route = NULL;
657   get_route_latency(src, dst, &route, NULL, 0);
658   return route;
659 }
660
661 static double get_latency(const char *src, const char *dst) {
662   double latency = -1.0;
663   get_route_latency(src, dst, NULL, &latency, 0);
664   return latency;
665 }
666
667
668 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
669 {
670   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
671
672   //adding my one link routes
673   unsigned int cpt;
674   void *link;
675   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
676   if (onelink_mine) {
677     xbt_dynar_foreach(onelink_mine, cpt, link) {
678       xbt_dynar_push(ret, &link);
679     }
680   }
681   //recursing
682   char *key;
683   xbt_dict_cursor_t cursor = NULL;
684   AS_t rc_child;
685   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
686     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
687     if (onelink_child) {
688       xbt_dynar_foreach(onelink_child, cpt, link) {
689         xbt_dynar_push(ret, &link);
690       }
691     }
692   }
693   return ret;
694 }
695
696 static xbt_dynar_t get_onelink_routes(void)
697 {
698   return recursive_get_onelink_routes(global_routing->root);
699 }
700
701 e_surf_network_element_type_t get_network_element_type(const char *name)
702 {
703   network_element_info_t rc = NULL;
704
705   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
706   if (rc)
707     return rc->rc_type;
708
709   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
710   if (rc)
711     return rc->rc_type;
712
713   return SURF_NETWORK_ELEMENT_NULL;
714 }
715
716 /**
717  * \brief Generic method: create the global routing schema
718  * 
719  * Make a global routing structure and set all the parsing functions.
720  */
721 void routing_model_create(size_t size_of_links, void *loopback)
722 {
723   /* config the uniq global routing */
724   global_routing = xbt_new0(s_routing_global_t, 1);
725   global_routing->root = NULL;
726   global_routing->get_route_or_null = get_route_or_null;
727   global_routing->get_latency = get_latency;
728   global_routing->get_route_no_cleanup = get_route_no_cleanup;
729   global_routing->get_onelink_routes = get_onelink_routes;
730   global_routing->get_route_latency = get_route_latency;
731   global_routing->get_network_element_type = get_network_element_type;
732   global_routing->loopback = loopback;
733   global_routing->size_of_link = size_of_links;
734   global_routing->last_route = NULL;
735   /* no current routing at moment */
736   current_routing = NULL;
737 }
738
739
740 /* ************************************************** */
741 /* ********** PATERN FOR NEW ROUTING **************** */
742
743 /* The minimal configuration of a new routing model need the next functions,
744  * also you need to set at the start of the file, the new model in the model
745  * list. Remember keep the null ending of the list.
746  */
747 /*** Routing model structure ***/
748 // typedef struct {
749 //   s_routing_component_t generic_routing;
750 //   /* things that your routing model need */
751 // } s_routing_component_NEW_t,*routing_component_NEW_t;
752
753 /*** Parse routing model functions ***/
754 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
755 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
756 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
757 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
758 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
759
760 /*** Business methods ***/
761 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
762 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
763 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
764
765 /*** Creation routing model functions ***/
766 // static void* model_NEW_create(void) {
767 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
768 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
769 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
770 //   new_component->generic_routing.set_route = model_NEW_set_route;
771 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
772 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
773 //   new_component->generic_routing.get_route = NEW_get_route;
774 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
775 //   new_component->generic_routing.finalize = NEW_finalize;
776 //   /* initialization of internal structures */
777 //   return new_component;
778 // } /* mandatory */
779 // static void  model_NEW_load(void) {}   /* mandatory */
780 // static void  model_NEW_unload(void) {} /* mandatory */
781 // static void  model_NEW_end(void) {}    /* mandatory */
782
783 /* ************************************************************************** */
784 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
785
786
787 static void routing_parse_cluster(void)
788 {
789   char *host_id, *groups, *link_id = NULL;
790   xbt_dict_t patterns = NULL;
791
792   s_sg_platf_host_cbarg_t host;
793   s_sg_platf_link_cbarg_t link;
794
795   if (strcmp(struct_cluster->availability_trace, "")
796       || strcmp(struct_cluster->state_trace, "")) {
797     patterns = xbt_dict_new();
798     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
799     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
800     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
801   }
802
803   unsigned int iter;
804   int start, end, i;
805   xbt_dynar_t radical_elements;
806   xbt_dynar_t radical_ends;
807
808   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
809   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
810
811   //Make all hosts
812   radical_elements = xbt_str_split(struct_cluster->radical, ",");
813   xbt_dynar_foreach(radical_elements, iter, groups) {
814     memset(&host, 0, sizeof(host));
815
816     radical_ends = xbt_str_split(groups, "-");
817     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
818
819     switch (xbt_dynar_length(radical_ends)) {
820     case 1:
821       end = start;
822       break;
823     case 2:
824       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
825       break;
826     default:
827       surf_parse_error("Malformed radical");
828       break;
829     }
830     for (i = start; i <= end; i++) {
831       host_id =
832           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
833       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
834
835       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
836                 struct_cluster->power);
837       host.id = host_id;
838       if (strcmp(struct_cluster->availability_trace, "")) {
839         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
840         char *tmp_availability_file =
841             xbt_str_varsubst(struct_cluster->availability_trace, patterns);
842         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
843         host.power_trace = tmgr_trace_new(tmp_availability_file);
844         xbt_free(tmp_availability_file);
845       } else {
846         XBT_DEBUG("\tavailability_file=\"\"");
847       }
848       if (strcmp(struct_cluster->state_trace, "")) {
849         char *tmp_state_file =
850             xbt_str_varsubst(struct_cluster->state_trace, patterns);
851         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
852         host.state_trace = tmgr_trace_new(tmp_state_file);
853         xbt_free(tmp_state_file);
854       } else {
855         XBT_DEBUG("\tstate_file=\"\"");
856       }
857
858       host.power_peak = struct_cluster->power;
859       host.power_scale = 1.0;
860       host.core_amount = struct_cluster->core_amount;
861       host.initial_state = SURF_RESOURCE_ON;
862       host.coord = "";
863       sg_platf_new_host(&host);
864       XBT_DEBUG("</host>");
865
866       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
867                 struct_cluster->bw, struct_cluster->lat);
868
869       memset(&link, 0, sizeof(link));
870       link.id = link_id;
871       link.bandwidth = struct_cluster->bw;
872       link.latency = struct_cluster->lat;
873       link.state = SURF_RESOURCE_ON;
874
875       switch (struct_cluster->sharing_policy) {
876       case A_surfxml_cluster_sharing_policy_SHARED:
877         link.policy = SURF_LINK_SHARED;
878         break;
879       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
880         link.policy = SURF_LINK_FULLDUPLEX;
881         break;
882       case A_surfxml_cluster_sharing_policy_FATPIPE:
883         link.policy = SURF_LINK_FATPIPE;
884         break;
885       default:
886         surf_parse_error(bprintf
887                          ("Invalid cluster sharing policy for cluster %s",
888                           struct_cluster->id));
889         break;
890       }
891       sg_platf_new_link(&link);
892
893       surf_parsing_link_up_down_t info =
894           xbt_new0(s_surf_parsing_link_up_down_t, 1);
895       if (link.policy == SURF_LINK_FULLDUPLEX) {
896         char *tmp_link = bprintf("%s_UP", link_id);
897         info->link_up =
898             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
899         free(tmp_link);
900         tmp_link = bprintf("%s_DOWN", link_id);
901         info->link_down =
902             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
903         free(tmp_link);
904       } else {
905         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
906         info->link_down = info->link_up;
907       }
908       surf_routing_cluster_add_link(host_id, info);
909
910       xbt_free(link_id);
911       xbt_free(host_id);
912     }
913
914     xbt_dynar_free(&radical_ends);
915   }
916   xbt_dynar_free(&radical_elements);
917
918   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written, and it's very useful to connect clusters together
919   XBT_DEBUG(" ");
920   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
921   s_sg_platf_router_cbarg_t router;
922   char *newid = NULL;
923   memset(&router, 0, sizeof(router));
924   router.id = struct_cluster->router_id;
925   router.coord = "";
926   if (!router.id || !strcmp(router.id, ""))
927     router.id = newid =
928         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
929                 struct_cluster->suffix);
930   sg_platf_new_router(&router);
931   free(newid);
932
933   //Make the backbone
934   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
935     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
936     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
937               struct_cluster->bb_bw, struct_cluster->bb_lat);
938
939     memset(&link, 0, sizeof(link));
940     link.id = link_backbone;
941     link.bandwidth = struct_cluster->bb_bw;
942     link.latency = struct_cluster->bb_lat;
943     link.state = SURF_RESOURCE_ON;
944
945     switch (struct_cluster->bb_sharing_policy) {
946     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
947       link.policy = SURF_LINK_FATPIPE;
948       break;
949     case A_surfxml_cluster_bb_sharing_policy_SHARED:
950       link.policy = SURF_LINK_SHARED;
951       break;
952     default:
953       surf_parse_error(bprintf
954                        ("Invalid bb sharing policy in cluster %s",
955                         struct_cluster->id));
956       break;
957     }
958
959     sg_platf_new_link(&link);
960
961     surf_parsing_link_up_down_t info =
962         xbt_new0(s_surf_parsing_link_up_down_t, 1);
963     info->link_up =
964         xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL);
965     info->link_down = info->link_up;
966     surf_routing_cluster_add_link(struct_cluster->id, info);
967
968     free(link_backbone);
969   }
970
971   XBT_DEBUG(" ");
972
973   char *new_suffix = xbt_strdup("");
974
975   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
976   xbt_dynar_foreach(radical_elements, iter, groups) {
977     if (strcmp(groups, "")) {
978       char *old_suffix = new_suffix;
979       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
980       free(old_suffix);
981     }
982   }
983
984   xbt_dynar_free(&radical_elements);
985   xbt_free(new_suffix);
986
987   XBT_DEBUG("</AS>");
988   sg_platf_new_AS_end();
989   XBT_DEBUG(" ");
990   xbt_dict_free(&patterns); // no op if it were never set
991 }
992
993 static void routing_parse_postparse(void) {
994   xbt_dict_free(&random_value);
995 }
996
997 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
998 {
999   static int AX_ptr = 0;
1000   char *host_id = NULL;
1001   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
1002
1003   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
1004   static unsigned int surfxml_buffer_stack_stack[1024];
1005
1006   surfxml_buffer_stack_stack[0] = 0;
1007
1008   surfxml_bufferstack_push(1);
1009
1010   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
1011   sg_platf_new_AS_begin(peer->id, "Full");
1012
1013   XBT_DEBUG(" ");
1014   host_id = HOST_PEER(peer->id);
1015   router_id = ROUTER_PEER(peer->id);
1016   link_id_up = LINK_UP_PEER(peer->id);
1017   link_id_down = LINK_DOWN_PEER(peer->id);
1018
1019   link_router = bprintf("%s_link_router", peer->id);
1020   link_backbone = bprintf("%s_backbone", peer->id);
1021
1022   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1023   s_sg_platf_host_cbarg_t host;
1024   memset(&host, 0, sizeof(host));
1025   host.initial_state = SURF_RESOURCE_ON;
1026   host.id = host_id;
1027   host.power_peak = peer->power;
1028   host.power_scale = 1.0;
1029   host.power_trace = peer->availability_trace;
1030   host.state_trace = peer->state_trace;
1031   host.core_amount = 1;
1032   sg_platf_new_host(&host);
1033
1034
1035   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1036   s_sg_platf_router_cbarg_t router;
1037   memset(&router, 0, sizeof(router));
1038   router.id = router_id;
1039   router.coord = peer->coord;
1040   sg_platf_new_router(&router);
1041
1042   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1043             peer->bw_in, peer->lat);
1044   s_sg_platf_link_cbarg_t link;
1045   memset(&link, 0, sizeof(link));
1046   link.state = SURF_RESOURCE_ON;
1047   link.policy = SURF_LINK_SHARED;
1048   link.id = link_id_up;
1049   link.bandwidth = peer->bw_in;
1050   link.latency = peer->lat;
1051   sg_platf_new_link(&link);
1052
1053   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1054   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1055   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1056             peer->bw_out, peer->lat);
1057   link.id = link_id_down;
1058   sg_platf_new_link(&link);
1059
1060   XBT_DEBUG(" ");
1061
1062   // begin here
1063   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1064   XBT_DEBUG("symmetrical=\"NO\">");
1065   SURFXML_BUFFER_SET(route_src, host_id);
1066   SURFXML_BUFFER_SET(route_dst, router_id);
1067   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1068   SURFXML_START_TAG(route);
1069
1070   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1071   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1072   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1073   SURFXML_START_TAG(link_ctn);
1074   SURFXML_END_TAG(link_ctn);
1075
1076   XBT_DEBUG("</route>");
1077   SURFXML_END_TAG(route);
1078
1079   //Opposite Route
1080   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1081   XBT_DEBUG("symmetrical=\"NO\">");
1082   SURFXML_BUFFER_SET(route_src, router_id);
1083   SURFXML_BUFFER_SET(route_dst, host_id);
1084   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1085   SURFXML_START_TAG(route);
1086
1087   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1088   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1089   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1090   SURFXML_START_TAG(link_ctn);
1091   SURFXML_END_TAG(link_ctn);
1092
1093   XBT_DEBUG("</route>");
1094   SURFXML_END_TAG(route);
1095
1096   XBT_DEBUG("</AS>");
1097   sg_platf_new_AS_end();
1098   XBT_DEBUG(" ");
1099
1100   //xbt_dynar_free(&tab_elements_num);
1101   free(host_id);
1102   free(router_id);
1103   free(link_router);
1104   free(link_backbone);
1105   free(link_id_up);
1106   free(link_id_down);
1107   surfxml_bufferstack_pop(1);
1108 }
1109
1110 static void routing_parse_Srandom(void)
1111 {
1112   double mean, std, min, max, seed;
1113   char *random_id = A_surfxml_random_id;
1114   char *random_radical = A_surfxml_random_radical;
1115   char *rd_name = NULL;
1116   char *rd_value;
1117   mean = surf_parse_get_double(A_surfxml_random_mean);
1118   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1119   min = surf_parse_get_double(A_surfxml_random_min);
1120   max = surf_parse_get_double(A_surfxml_random_max);
1121   seed = surf_parse_get_double(A_surfxml_random_seed);
1122
1123   double res = 0;
1124   int i = 0;
1125   random_data_t random = xbt_new0(s_random_data_t, 1);
1126   char *tmpbuf;
1127
1128   xbt_dynar_t radical_elements;
1129   unsigned int iter;
1130   char *groups;
1131   int start, end;
1132   xbt_dynar_t radical_ends;
1133
1134   random->generator = A_surfxml_random_generator;
1135   random->seed = seed;
1136   random->min = min;
1137   random->max = max;
1138
1139   /* Check user stupidities */
1140   if (max < min)
1141     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1142   if (mean < min)
1143     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1144   if (mean > max)
1145     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1146
1147   /* normalize the mean and standard deviation before storing */
1148   random->mean = (mean - min) / (max - min);
1149   random->std = std / (max - min);
1150
1151   if (random->mean * (1 - random->mean) < random->std * random->std)
1152     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1153            random->mean, random->std);
1154
1155   XBT_DEBUG
1156       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1157        random_id, random->min, random->max, random->mean, random->std,
1158        random->generator, random->seed, random_radical);
1159
1160   if (xbt_dict_size(random_value) == 0)
1161     random_value = xbt_dict_new();
1162
1163   if (!strcmp(random_radical, "")) {
1164     res = random_generate(random);
1165     rd_value = bprintf("%f", res);
1166     xbt_dict_set(random_value, random_id, rd_value, free);
1167   } else {
1168     radical_elements = xbt_str_split(random_radical, ",");
1169     xbt_dynar_foreach(radical_elements, iter, groups) {
1170       radical_ends = xbt_str_split(groups, "-");
1171       switch (xbt_dynar_length(radical_ends)) {
1172       case 1:
1173         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1174                    "Custom Random '%s' already exists !", random_id);
1175         res = random_generate(random);
1176         tmpbuf =
1177             bprintf("%s%d", random_id,
1178                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1179         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1180         xbt_free(tmpbuf);
1181         break;
1182
1183       case 2:
1184         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1185         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1186         for (i = start; i <= end; i++) {
1187           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1188                      "Custom Random '%s' already exists !", bprintf("%s%d",
1189                                                                     random_id,
1190                                                                     i));
1191           res = random_generate(random);
1192           tmpbuf = bprintf("%s%d", random_id, i);
1193           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1194           xbt_free(tmpbuf);
1195         }
1196         break;
1197       default:
1198         XBT_INFO("Malformed radical");
1199         break;
1200       }
1201       res = random_generate(random);
1202       rd_name = bprintf("%s_router", random_id);
1203       rd_value = bprintf("%f", res);
1204       xbt_dict_set(random_value, rd_name, rd_value, free);
1205
1206       xbt_dynar_free(&radical_ends);
1207     }
1208     free(rd_name);
1209     xbt_dynar_free(&radical_elements);
1210   }
1211 }
1212
1213 void routing_register_callbacks()
1214 {
1215   sg_platf_host_add_cb(parse_S_host);
1216   sg_platf_router_add_cb(parse_S_router);
1217
1218   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1219
1220   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1221   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1222   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1223                        &routing_parse_S_bypassRoute);
1224
1225   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1226
1227   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1228   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1229   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1230                        &routing_parse_E_bypassRoute);
1231
1232   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1233
1234   sg_platf_peer_add_cb(routing_parse_peer);
1235   sg_platf_postparse_add_cb(routing_parse_postparse);
1236
1237 #ifdef HAVE_TRACING
1238   instr_routing_define_callbacks();
1239 #endif
1240 }
1241
1242 /**
1243  * \brief Recursive function for finalize
1244  *
1245  * \param rc the source host name
1246  *
1247  * This fuction is call by "finalize". It allow to finalize the
1248  * AS or routing components. It delete all the structures.
1249  */
1250 static void finalize_rec(AS_t as) {
1251   xbt_dict_cursor_t cursor = NULL;
1252   char *key;
1253   AS_t elem;
1254
1255   xbt_dict_foreach(as->routing_sons, cursor, key, elem)
1256   finalize_rec(elem);
1257
1258   xbt_dict_free(&as->routing_sons);
1259   xbt_free(as->name);
1260   as->finalize(as);
1261 }
1262
1263 /** \brief Frees all memory allocated by the routing module */
1264 void routing_exit(void) {
1265   if (!global_routing)
1266     return;
1267   finalize_rec(global_routing->root);
1268   xbt_dynar_free(&global_routing->last_route);
1269   xbt_free(global_routing);
1270 }