1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
2 * All rights reserved. */
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. */
7 #include "surf_routing_private.h"
10 extern routing_global_t global_routing;
11 extern routing_component_t current_routing;
12 extern model_type_t current_routing_model;
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_floyd, surf, "Routing part of surf");
16 #define TO_FLOYD_COST(i,j) (routing->cost_table)[(i)+(j)*table_size]
17 #define TO_FLOYD_PRED(i,j) (routing->predecessor_table)[(i)+(j)*table_size]
18 #define TO_FLOYD_LINK(i,j) (routing->link_table)[(i)+(j)*table_size]
20 /* Routing model structure */
23 s_routing_component_t generic_routing;
24 /* vars for calculate the floyd algorith. */
25 int *predecessor_table;
27 route_extended_t *link_table; /* char* -> int* */
28 } s_routing_component_floyd_t, *routing_component_floyd_t;
30 static route_extended_t floyd_get_route(routing_component_t rc,
31 const char *src, const char *dst);
33 /* Business methods */
34 static xbt_dynar_t floyd_get_onelink_routes(routing_component_t rc)
36 xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
38 routing_component_floyd_t routing = (routing_component_floyd_t) rc;
39 //size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
40 xbt_dict_cursor_t c1 = NULL, c2 = NULL;
41 char *k1, *d1, *k2, *d2;
42 xbt_dict_foreach(routing->generic_routing.to_index, c1, k1, d1) {
43 xbt_dict_foreach(routing->generic_routing.to_index, c2, k2, d2) {
44 route_extended_t route = floyd_get_route(rc, k1, k2);
46 if (xbt_dynar_length(route->generic_route.link_list) == 1) {
48 *(void **) xbt_dynar_get_ptr(route->generic_route.link_list,
50 onelink_t onelink = xbt_new0(s_onelink_t, 1);
51 onelink->link_ptr = link;
52 if (routing->generic_routing.hierarchy == SURF_ROUTING_BASE) {
53 onelink->src = xbt_strdup(k1);
54 onelink->dst = xbt_strdup(k2);
55 } else if (routing->generic_routing.hierarchy ==
56 SURF_ROUTING_RECURSIVE) {
57 onelink->src = xbt_strdup(route->src_gateway);
58 onelink->dst = xbt_strdup(route->dst_gateway);
60 xbt_dynar_push(ret, &onelink);
68 static route_extended_t floyd_get_route(routing_component_t rc,
69 const char *src, const char *dst)
73 "Invalid params for \"get_route\" function at AS \"%s\"",
77 routing_component_floyd_t routing = (routing_component_floyd_t) rc;
78 size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
80 generic_src_dst_check(rc, src, dst);
81 int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, src);
82 int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, dst);
85 "Ask for route \"from\"(%s) or \"to\"(%s) no found in the local table",
88 /* create a result route */
89 route_extended_t new_e_route = xbt_new0(s_route_extended_t, 1);
90 new_e_route->generic_route.link_list =
91 xbt_dynar_new(global_routing->size_of_link, NULL);
92 new_e_route->src_gateway = NULL;
93 new_e_route->dst_gateway = NULL;
98 char *gw_src = NULL, *gw_dst = NULL, *prev_gw_src, *first_gw = NULL;
105 pred = TO_FLOYD_PRED(*src_id, pred);
106 if (pred == -1) /* if no pred in route -> no route to host */
108 xbt_assert(TO_FLOYD_LINK(pred, prev_pred),
109 "Invalid link for the route between \"%s\" or \"%s\"", src,
112 prev_gw_src = gw_src;
114 route_extended_t e_route = TO_FLOYD_LINK(pred, prev_pred);
115 gw_src = e_route->src_gateway;
116 gw_dst = e_route->dst_gateway;
121 if (rc->hierarchy == SURF_ROUTING_RECURSIVE && !first
122 && strcmp(gw_dst, prev_gw_src)) {
123 xbt_dynar_t e_route_as_to_as =
124 (*(global_routing->get_route)) (gw_dst, prev_gw_src);
125 xbt_assert(e_route_as_to_as, "no route between \"%s\" and \"%s\"",
126 gw_dst, prev_gw_src);
127 links = e_route_as_to_as;
129 xbt_dynar_foreach(links, cpt, link) {
130 xbt_dynar_insert_at(new_e_route->generic_route.link_list, pos,
136 links = e_route->generic_route.link_list;
137 xbt_dynar_foreach(links, cpt, link) {
138 xbt_dynar_unshift(new_e_route->generic_route.link_list, &link);
142 } while (pred != *src_id);
143 xbt_assert(pred != -1, "no route from host %d to %d (\"%s\" to \"%s\")",
144 *src_id, *dst_id, src, dst);
146 if (rc->hierarchy == SURF_ROUTING_RECURSIVE) {
147 new_e_route->src_gateway = xbt_strdup(gw_src);
148 new_e_route->dst_gateway = xbt_strdup(first_gw);
154 static void floyd_finalize(routing_component_t rc)
156 routing_component_floyd_t routing = (routing_component_floyd_t) rc;
160 table_size = xbt_dict_length(routing->generic_routing.to_index);
161 /* Delete link_table */
162 for (i = 0; i < table_size; i++)
163 for (j = 0; j < table_size; j++)
164 generic_free_extended_route(TO_FLOYD_LINK(i, j));
165 xbt_free(routing->link_table);
166 /* Delete bypass dict */
167 xbt_dict_free(&routing->generic_routing.bypassRoutes);
168 /* Delete index dict */
169 xbt_dict_free(&(routing->generic_routing.to_index));
170 /* Delete dictionary index dict, predecessor and links table */
171 xbt_free(routing->predecessor_table);
172 /* Delete structure */
177 routing_component_t model_floyd_create(void)
179 routing_component_floyd_t new_component = (routing_component_floyd_t)routmod_generic_create(sizeof(s_routing_component_floyd_t));
180 new_component->generic_routing.set_route = model_floyd_set_route;
181 new_component->generic_routing.set_ASroute = model_floyd_set_route;
182 new_component->generic_routing.get_route = floyd_get_route;
183 new_component->generic_routing.get_onelink_routes =
184 floyd_get_onelink_routes;
185 new_component->generic_routing.finalize = floyd_finalize;
186 return (routing_component_t)new_component;
189 void model_floyd_end(void)
192 routing_component_floyd_t routing =
193 ((routing_component_floyd_t) current_routing);
195 unsigned int i, j, a, b, c;
197 /* set the size of table routing */
198 size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
200 if(!routing->link_table)
202 /* Create Cost, Predecessor and Link tables */
203 routing->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
204 routing->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
205 routing->link_table = xbt_new0(route_extended_t, table_size * table_size); /* actual link between src and dst */
207 /* Initialize costs and predecessors */
208 for (i = 0; i < table_size; i++)
209 for (j = 0; j < table_size; j++) {
210 TO_FLOYD_COST(i, j) = DBL_MAX;
211 TO_FLOYD_PRED(i, j) = -1;
212 TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
216 /* Add the loopback if needed */
217 if (current_routing->hierarchy == SURF_ROUTING_BASE) {
218 for (i = 0; i < table_size; i++) {
219 route_extended_t e_route = TO_FLOYD_LINK(i, i);
221 e_route = xbt_new0(s_route_extended_t, 1);
222 e_route->src_gateway = NULL;
223 e_route->dst_gateway = NULL;
224 e_route->generic_route.link_list =
225 xbt_dynar_new(global_routing->size_of_link, NULL);
226 xbt_dynar_push(e_route->generic_route.link_list,
227 &global_routing->loopback);
228 TO_FLOYD_LINK(i, i) = e_route;
229 TO_FLOYD_PRED(i, i) = i;
230 TO_FLOYD_COST(i, i) = 1;
234 /* Calculate path costs */
235 for (c = 0; c < table_size; c++) {
236 for (a = 0; a < table_size; a++) {
237 for (b = 0; b < table_size; b++) {
238 if (TO_FLOYD_COST(a, c) < DBL_MAX && TO_FLOYD_COST(c, b) < DBL_MAX) {
239 if (TO_FLOYD_COST(a, b) == DBL_MAX ||
240 (TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b) <
241 TO_FLOYD_COST(a, b))) {
242 TO_FLOYD_COST(a, b) =
243 TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b);
244 TO_FLOYD_PRED(a, b) = TO_FLOYD_PRED(c, b);
252 static int surf_pointer_resource_cmp(const void *a, const void *b) {
256 //FIXME: kill dupplicates in next function with full routing
258 void model_floyd_set_route(routing_component_t rc, const char *src,
259 const char *dst, name_route_extended_t route)
261 routing_component_floyd_t routing = (routing_component_floyd_t) rc;
263 /* set the size of table routing */
264 size_t table_size = xbt_dict_length(rc->to_index);
265 int *src_id, *dst_id;
268 src_id = xbt_dict_get_or_null(rc->to_index, src);
269 dst_id = xbt_dict_get_or_null(rc->to_index, dst);
271 xbt_assert(src_id, "Network elements %s not found", src);
272 xbt_assert(dst_id, "Network elements %s not found", dst);
274 if(!routing->link_table)
276 /* Create Cost, Predecessor and Link tables */
277 routing->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
278 routing->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
279 routing->link_table = xbt_new0(route_extended_t, table_size * table_size); /* actual link between src and dst */
281 /* Initialize costs and predecessors */
282 for (i = 0; i < table_size; i++)
283 for (j = 0; j < table_size; j++) {
284 TO_FLOYD_COST(i, j) = DBL_MAX;
285 TO_FLOYD_PRED(i, j) = -1;
286 TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
290 if(TO_FLOYD_LINK(*src_id, *dst_id))
292 if(!route->dst_gateway && !route->src_gateway)
293 XBT_DEBUG("See Route from \"%s\" to \"%s\"", src, dst);
295 XBT_DEBUG("See ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
296 route->src_gateway, dst, route->dst_gateway);
299 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
300 xbt_dynar_foreach(route->generic_route.link_list,cpt,link_name)
302 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
303 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
304 xbt_dynar_push(link_route_to_test,&link);
306 xbt_assert(!xbt_dynar_compare(
307 (void*)TO_FLOYD_LINK(*src_id, *dst_id)->generic_route.link_list,
308 (void*)link_route_to_test,
309 (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
310 "The route between \"%s\" and \"%s\" already exists", src,dst);
314 if(!route->dst_gateway && !route->src_gateway)
315 XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
317 XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
318 route->src_gateway, dst, route->dst_gateway);
319 if(global_routing->get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
320 xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
321 if(global_routing->get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
322 xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
324 TO_FLOYD_LINK(*src_id, *dst_id) =
325 generic_new_extended_route(rc->hierarchy, route, 1);
326 TO_FLOYD_PRED(*src_id, *dst_id) = *src_id;
327 TO_FLOYD_COST(*src_id, *dst_id) =
328 ((TO_FLOYD_LINK(*src_id, *dst_id))->generic_route.link_list)->used; /* count of links, old model assume 1 */
331 if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
332 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
334 if(TO_FLOYD_LINK(*dst_id, *src_id))
336 if(!route->dst_gateway && !route->src_gateway)
337 XBT_DEBUG("See Route from \"%s\" to \"%s\"", dst, src);
339 XBT_DEBUG("See ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
340 route->src_gateway, src, route->dst_gateway);
343 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
344 for(i=xbt_dynar_length(route->generic_route.link_list) ;i>0 ;i--)
346 link_name = xbt_dynar_get_as(route->generic_route.link_list,i-1,void *);
347 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
348 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
349 xbt_dynar_push(link_route_to_test,&link);
351 xbt_assert(!xbt_dynar_compare(
352 (void*)TO_FLOYD_LINK(*dst_id, *src_id)->generic_route.link_list,
353 (void*)link_route_to_test,
354 (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
355 "The route between \"%s\" and \"%s\" already exists", src,dst);
359 if(route->dst_gateway && route->src_gateway)
361 char *gw_src = xbt_strdup(route->src_gateway);
362 char *gw_dst = xbt_strdup(route->dst_gateway);
363 route->src_gateway = gw_dst;
364 route->dst_gateway = gw_src;
367 if(!route->dst_gateway && !route->src_gateway)
368 XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
370 XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
371 route->src_gateway, src, route->dst_gateway);
373 TO_FLOYD_LINK(*dst_id, *src_id) =
374 generic_new_extended_route(rc->hierarchy, route, 0);
375 TO_FLOYD_PRED(*dst_id, *src_id) = *dst_id;
376 TO_FLOYD_COST(*dst_id, *src_id) =
377 ((TO_FLOYD_LINK(*dst_id, *src_id))->generic_route.link_list)->used; /* count of links, old model assume 1 */