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 void *model_floyd_create(void)
179 routing_component_floyd_t new_component =
180 xbt_new0(s_routing_component_floyd_t, 1);
181 new_component->generic_routing.set_processing_unit =
182 generic_set_processing_unit;
183 new_component->generic_routing.set_autonomous_system =
184 generic_set_autonomous_system;
185 new_component->generic_routing.set_route = model_floyd_set_route;
186 new_component->generic_routing.set_ASroute = model_floyd_set_route;
187 new_component->generic_routing.set_bypassroute = generic_set_bypassroute;
188 new_component->generic_routing.get_route = floyd_get_route;
189 new_component->generic_routing.get_latency = generic_get_link_latency;
190 new_component->generic_routing.get_onelink_routes =
191 floyd_get_onelink_routes;
192 new_component->generic_routing.get_bypass_route =
193 generic_get_bypassroute;
194 new_component->generic_routing.finalize = floyd_finalize;
195 new_component->generic_routing.to_index = xbt_dict_new();
196 new_component->generic_routing.bypassRoutes = xbt_dict_new();
197 new_component->generic_routing.get_network_element_type = get_network_element_type;
198 return new_component;
201 void model_floyd_load(void)
203 /* use "surfxml_add_callback" to add a parse function call */
206 void model_floyd_unload(void)
208 /* use "surfxml_del_callback" to remove a parse function call */
211 void model_floyd_end(void)
214 routing_component_floyd_t routing =
215 ((routing_component_floyd_t) current_routing);
217 unsigned int i, j, a, b, c;
219 /* set the size of table routing */
220 size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
222 if(!routing->link_table)
224 /* Create Cost, Predecessor and Link tables */
225 routing->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
226 routing->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
227 routing->link_table = xbt_new0(route_extended_t, table_size * table_size); /* actual link between src and dst */
229 /* Initialize costs and predecessors */
230 for (i = 0; i < table_size; i++)
231 for (j = 0; j < table_size; j++) {
232 TO_FLOYD_COST(i, j) = DBL_MAX;
233 TO_FLOYD_PRED(i, j) = -1;
234 TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
238 /* Add the loopback if needed */
239 if (current_routing->hierarchy == SURF_ROUTING_BASE) {
240 for (i = 0; i < table_size; i++) {
241 route_extended_t e_route = TO_FLOYD_LINK(i, i);
243 e_route = xbt_new0(s_route_extended_t, 1);
244 e_route->src_gateway = NULL;
245 e_route->dst_gateway = NULL;
246 e_route->generic_route.link_list =
247 xbt_dynar_new(global_routing->size_of_link, NULL);
248 xbt_dynar_push(e_route->generic_route.link_list,
249 &global_routing->loopback);
250 TO_FLOYD_LINK(i, i) = e_route;
251 TO_FLOYD_PRED(i, i) = i;
252 TO_FLOYD_COST(i, i) = 1;
256 /* Calculate path costs */
257 for (c = 0; c < table_size; c++) {
258 for (a = 0; a < table_size; a++) {
259 for (b = 0; b < table_size; b++) {
260 if (TO_FLOYD_COST(a, c) < DBL_MAX && TO_FLOYD_COST(c, b) < DBL_MAX) {
261 if (TO_FLOYD_COST(a, b) == DBL_MAX ||
262 (TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b) <
263 TO_FLOYD_COST(a, b))) {
264 TO_FLOYD_COST(a, b) =
265 TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b);
266 TO_FLOYD_PRED(a, b) = TO_FLOYD_PRED(c, b);
274 void model_floyd_set_route(routing_component_t rc, const char *src,
275 const char *dst, name_route_extended_t route)
277 routing_component_floyd_t routing = (routing_component_floyd_t) rc;
279 /* set the size of table routing */
280 size_t table_size = xbt_dict_length(rc->to_index);
281 int *src_id, *dst_id;
284 src_id = xbt_dict_get_or_null(rc->to_index, src);
285 dst_id = xbt_dict_get_or_null(rc->to_index, dst);
287 xbt_assert(src_id, "Network elements %s not found", src);
288 xbt_assert(dst_id, "Network elements %s not found", dst);
290 if(!routing->link_table)
292 /* Create Cost, Predecessor and Link tables */
293 routing->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
294 routing->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
295 routing->link_table = xbt_new0(route_extended_t, table_size * table_size); /* actual link between src and dst */
297 /* Initialize costs and predecessors */
298 for (i = 0; i < table_size; i++)
299 for (j = 0; j < table_size; j++) {
300 TO_FLOYD_COST(i, j) = DBL_MAX;
301 TO_FLOYD_PRED(i, j) = -1;
302 TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
306 if(TO_FLOYD_LINK(*src_id, *dst_id))
308 if(!route->dst_gateway && !route->src_gateway)
309 XBT_DEBUG("See Route from \"%s\" to \"%s\"", src, dst);
311 XBT_DEBUG("See ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
312 route->src_gateway, dst, route->dst_gateway);
315 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
316 xbt_dynar_foreach(route->generic_route.link_list,cpt,link_name)
318 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
319 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
320 xbt_dynar_push(link_route_to_test,&link);
322 xbt_assert(!xbt_dynar_compare(
323 (void*)TO_FLOYD_LINK(*src_id, *dst_id)->generic_route.link_list,
324 (void*)link_route_to_test,
325 (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
326 "The route between \"%s\" and \"%s\" already exists", src,dst);
330 if(!route->dst_gateway && !route->src_gateway)
331 XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
333 XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
334 route->src_gateway, dst, route->dst_gateway);
335 if(global_routing->get_network_element_type((const char*)route->dst_gateway) == SURF_NETWORK_ELEMENT_NULL)
336 xbt_die("The dst_gateway '%s' does not exist!",route->dst_gateway);
337 if(global_routing->get_network_element_type((const char*)route->src_gateway) == SURF_NETWORK_ELEMENT_NULL)
338 xbt_die("The src_gateway '%s' does not exist!",route->src_gateway);
340 TO_FLOYD_LINK(*src_id, *dst_id) =
341 generic_new_extended_route(rc->hierarchy, route, 1);
342 TO_FLOYD_PRED(*src_id, *dst_id) = *src_id;
343 TO_FLOYD_COST(*src_id, *dst_id) =
344 ((TO_FLOYD_LINK(*src_id, *dst_id))->generic_route.link_list)->used; /* count of links, old model assume 1 */
347 if( A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
348 || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES )
350 if(TO_FLOYD_LINK(*dst_id, *src_id))
352 if(!route->dst_gateway && !route->src_gateway)
353 XBT_DEBUG("See Route from \"%s\" to \"%s\"", dst, src);
355 XBT_DEBUG("See ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
356 route->src_gateway, src, route->dst_gateway);
359 xbt_dynar_t link_route_to_test = xbt_dynar_new(global_routing->size_of_link, NULL);
360 for(i=xbt_dynar_length(route->generic_route.link_list) ;i>0 ;i--)
362 link_name = xbt_dynar_get_as(route->generic_route.link_list,i-1,void *);
363 void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
364 xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
365 xbt_dynar_push(link_route_to_test,&link);
367 xbt_assert(!xbt_dynar_compare(
368 (void*)TO_FLOYD_LINK(*dst_id, *src_id)->generic_route.link_list,
369 (void*)link_route_to_test,
370 (int_f_cpvoid_cpvoid_t) surf_pointer_resource_cmp),
371 "The route between \"%s\" and \"%s\" already exists", src,dst);
375 if(route->dst_gateway && route->src_gateway)
377 char *gw_src = xbt_strdup(route->src_gateway);
378 char *gw_dst = xbt_strdup(route->dst_gateway);
379 route->src_gateway = gw_dst;
380 route->dst_gateway = gw_src;
383 if(!route->dst_gateway && !route->src_gateway)
384 XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
386 XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
387 route->src_gateway, src, route->dst_gateway);
389 TO_FLOYD_LINK(*dst_id, *src_id) =
390 generic_new_extended_route(rc->hierarchy, route, 0);
391 TO_FLOYD_PRED(*dst_id, *src_id) = *dst_id;
392 TO_FLOYD_COST(*dst_id, *src_id) =
393 ((TO_FLOYD_LINK(*dst_id, *src_id))->generic_route.link_list)->used; /* count of links, old model assume 1 */