1 /* Copyright (c) 2009-2015. 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. */
13 #include <xbt/sysdep.h>
14 #include <xbt/dynar.h>
15 #include <xbt/graph.h>
17 #include "simgrid/platf_interface.h" // platform creation API internal interface
19 #include "surf_routing_generic.hpp"
20 #include "surf_routing_private.hpp"
21 #include "network_interface.hpp"
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_routing_generic, surf_route, "Generic implementation of the surf routing");
25 static int no_bypassroute_declared = 1;
27 void routing_route_free(sg_platf_route_cbarg_t route)
30 xbt_dynar_free(&route->link_list);
38 AsGeneric::AsGeneric(const char*name)
43 AsGeneric::~AsGeneric()
45 xbt_dict_free(&bypassRoutes_);
48 void AsGeneric::parseBypassroute(sg_platf_route_cbarg_t e_route)
50 char *src = (char*)(e_route->src);
51 char *dst = (char*)(e_route->dst);
54 XBT_DEBUG("Load bypassASroute from \"%s\" to \"%s\"", src, dst);
56 XBT_DEBUG("Load bypassRoute from \"%s\" to \"%s\"", src, dst);
57 xbt_dict_t dict_bypassRoutes = bypassRoutes_;
60 route_name = bprintf("%s#%s", src, dst);
61 xbt_assert(!xbt_dynar_is_empty(e_route->link_list),
62 "Invalid count of links, must be greater than zero (%s,%s)",
64 xbt_assert(!xbt_dict_get_or_null(dict_bypassRoutes, route_name),
65 "The bypass route between \"%s\"(\"%s\") and \"%s\"(\"%s\") already exists",
66 src, e_route->gw_src->name(), dst, e_route->gw_dst->name());
68 sg_platf_route_cbarg_t new_e_route = NULL;
70 new_e_route = newExtendedRoute(SURF_ROUTING_RECURSIVE, e_route, 1);
72 new_e_route = newExtendedRoute(SURF_ROUTING_BASE, e_route, 1);
74 xbt_dynar_free(&(e_route->link_list));
76 xbt_dict_set(dict_bypassRoutes, route_name, new_e_route, NULL);
77 no_bypassroute_declared = 0;
84 /* ************************************************************************** */
85 /* *********************** GENERIC BUSINESS METHODS ************************* */
87 static const char *instr_node_name(xbt_node_t node)
89 void *data = xbt_graph_node_get_data(node);
90 char *str = (char *) data;
94 xbt_node_t new_xbt_graph_node(xbt_graph_t graph, const char *name,
97 xbt_node_t ret = (xbt_node_t) xbt_dict_get_or_null(nodes, name);
101 ret = xbt_graph_new_node(graph, xbt_strdup(name));
102 xbt_dict_set(nodes, name, ret, NULL);
106 xbt_edge_t new_xbt_graph_edge(xbt_graph_t graph, xbt_node_t s, xbt_node_t d,
111 const char *sn = instr_node_name(s);
112 const char *dn = instr_node_name(d);
113 int len = strlen(sn) + strlen(dn) + 1;
114 char *name = (char *) xbt_malloc(len * sizeof(char));
117 snprintf(name, len, "%s%s", sn, dn);
118 ret = (xbt_edge_t) xbt_dict_get_or_null(edges, name);
120 snprintf(name, len, "%s%s", dn, sn);
121 ret = (xbt_edge_t) xbt_dict_get_or_null(edges, name);
125 ret = xbt_graph_new_edge(graph, s, d, NULL);
126 xbt_dict_set(edges, name, ret, NULL);
135 void AsGeneric::getGraph(xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges)
138 int table_size = xbt_dynar_length(vertices_);
141 for (src = 0; src < table_size; src++) {
143 xbt_dynar_get_as(vertices_, src, NetCard*);
144 for (dst = 0; dst < table_size; dst++) {
148 xbt_dynar_get_as(vertices_, dst, NetCard*);
150 sg_platf_route_cbarg_t route = xbt_new0(s_sg_platf_route_cbarg_t, 1);
151 route->link_list = xbt_dynar_new(sizeof(Link*), NULL);
153 getRouteAndLatency(my_src, my_dst, route, NULL);
155 XBT_DEBUG ("get_route_and_latency %s -> %s", my_src->name(), my_dst->name());
160 xbt_node_t current, previous;
161 const char *previous_name, *current_name;
164 previous = new_xbt_graph_node(graph, route->gw_src->name(), nodes);
165 previous_name = route->gw_src->name();
167 previous = new_xbt_graph_node(graph, my_src->name(), nodes);
168 previous_name = my_src->name();
171 xbt_dynar_foreach(route->link_list, cpt, link) {
172 const char *link_name = static_cast<simgrid::surf::Resource*>(
174 current = new_xbt_graph_node(graph, link_name, nodes);
175 current_name = link_name;
176 new_xbt_graph_edge(graph, previous, current, edges);
177 XBT_DEBUG (" %s -> %s", previous_name, current_name);
179 previous_name = current_name;
183 current = new_xbt_graph_node(graph, route->gw_dst->name(), nodes);
184 current_name = route->gw_dst->name();
186 current = new_xbt_graph_node(graph, my_dst->name(), nodes);
187 current_name = my_dst->name();
189 new_xbt_graph_edge(graph, previous, current, edges);
190 XBT_DEBUG (" %s -> %s", previous_name, current_name);
192 xbt_dynar_free (&(route->link_list));
198 sg_platf_route_cbarg_t AsGeneric::getBypassRoute(NetCard *src,
202 // If never set a bypass route return NULL without any further computations
203 XBT_DEBUG("generic_get_bypassroute from %s to %s", src->name(), dst->name());
204 if (no_bypassroute_declared)
207 sg_platf_route_cbarg_t e_route_bypass = NULL;
208 xbt_dict_t dict_bypassRoutes = bypassRoutes_;
210 if(dst->containingAS() == this && src->containingAS() == this ){
211 char *route_name = bprintf("%s#%s", src->name(), dst->name());
212 e_route_bypass = (sg_platf_route_cbarg_t) xbt_dict_get_or_null(dict_bypassRoutes, route_name);
214 XBT_DEBUG("Find bypass route with %ld links",xbt_dynar_length(e_route_bypass->link_list));
219 int index_src, index_dst;
220 xbt_dynar_t path_src = NULL;
221 xbt_dynar_t path_dst = NULL;
223 As **current_src = NULL;
224 As **current_dst = NULL;
226 if (src == NULL || dst == NULL)
227 xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found at AS \"%s\"",
228 src ? src->name() : "(null)",
229 dst ? dst->name() : "(null)", name_);
231 src_as = src->containingAS();
232 dst_as = dst->containingAS();
234 /* (2) find the path to the root routing component */
235 path_src = xbt_dynar_new(sizeof(As*), NULL);
237 while (current != NULL) {
238 xbt_dynar_push(path_src, ¤t);
239 current = current->father_;
241 path_dst = xbt_dynar_new(sizeof(As*), NULL);
243 while (current != NULL) {
244 xbt_dynar_push(path_dst, ¤t);
245 current = current->father_;
248 /* (3) find the common father */
249 index_src = path_src->used - 1;
250 index_dst = path_dst->used - 1;
251 current_src = (As **) xbt_dynar_get_ptr(path_src, index_src);
252 current_dst = (As **) xbt_dynar_get_ptr(path_dst, index_dst);
253 while (index_src >= 0 && index_dst >= 0 && *current_src == *current_dst) {
254 xbt_dynar_pop_ptr(path_src);
255 xbt_dynar_pop_ptr(path_dst);
258 current_src = (As **) xbt_dynar_get_ptr(path_src, index_src);
259 current_dst = (As **) xbt_dynar_get_ptr(path_dst, index_dst);
262 int max_index_src = path_src->used - 1;
263 int max_index_dst = path_dst->used - 1;
265 int max_index = std::max(max_index_src, max_index_dst);
268 for (max = 0; max <= max_index; max++) {
269 for (i = 0; i < max; i++) {
270 if (i <= max_index_src && max <= max_index_dst) {
271 char *route_name = bprintf("%s#%s",
273 (xbt_dynar_get_ptr(path_src, i)))->name_,
275 (xbt_dynar_get_ptr(path_dst, max)))->name_);
276 e_route_bypass = (sg_platf_route_cbarg_t) xbt_dict_get_or_null(dict_bypassRoutes, route_name);
277 xbt_free(route_name);
281 if (max <= max_index_src && i <= max_index_dst) {
282 char *route_name = bprintf("%s#%s",
284 (xbt_dynar_get_ptr(path_src, max)))->name_,
286 (xbt_dynar_get_ptr(path_dst, i)))->name_);
287 e_route_bypass = (sg_platf_route_cbarg_t) xbt_dict_get_or_null(dict_bypassRoutes, route_name);
288 xbt_free(route_name);
297 if (max <= max_index_src && max <= max_index_dst) {
298 char *route_name = bprintf("%s#%s",
300 (xbt_dynar_get_ptr(path_src, max)))->name_,
302 (xbt_dynar_get_ptr(path_dst, max)))->name_);
303 e_route_bypass = (sg_platf_route_cbarg_t) xbt_dict_get_or_null(dict_bypassRoutes, route_name);
304 xbt_free(route_name);
310 xbt_dynar_free(&path_src);
311 xbt_dynar_free(&path_dst);
314 sg_platf_route_cbarg_t new_e_route = NULL;
315 if (e_route_bypass) {
317 unsigned int cpt = 0;
318 new_e_route = xbt_new0(s_sg_platf_route_cbarg_t, 1);
319 new_e_route->gw_src = e_route_bypass->gw_src;
320 new_e_route->gw_dst = e_route_bypass->gw_dst;
321 new_e_route->link_list =
322 xbt_dynar_new(sizeof(Link*), NULL);
323 xbt_dynar_foreach(e_route_bypass->link_list, cpt, link) {
324 xbt_dynar_push(new_e_route->link_list, &link);
326 *lat += link->getLatency();
333 /* ************************************************************************** */
334 /* ************************* GENERIC AUX FUNCTIONS ************************** */
335 /* change a route containing link names into a route containing link entities */
336 sg_platf_route_cbarg_t AsGeneric::newExtendedRoute(e_surf_routing_hierarchy_t hierarchy,
337 sg_platf_route_cbarg_t routearg, int change_order) {
339 sg_platf_route_cbarg_t result;
343 result = xbt_new0(s_sg_platf_route_cbarg_t, 1);
344 result->link_list = xbt_dynar_new(sizeof(Link*), NULL);
346 xbt_assert(hierarchy == SURF_ROUTING_BASE
347 || hierarchy == SURF_ROUTING_RECURSIVE,
348 "The hierarchy of this AS is neither BASIC nor RECURSIVE, I'm lost here.");
350 if (hierarchy == SURF_ROUTING_RECURSIVE) {
352 xbt_assert(routearg->gw_src && routearg->gw_dst, "NULL is obviously a deficient gateway");
354 /* remember not erase the gateway names */
355 result->gw_src = routearg->gw_src;
356 result->gw_dst = routearg->gw_dst;
359 xbt_dynar_foreach(routearg->link_list, cpt, link_name) {
361 Link *link = Link::byName(link_name);
364 xbt_dynar_push(result->link_list, &link);
366 xbt_dynar_unshift(result->link_list, &link);
368 THROWF(mismatch_error, 0, "Link '%s' not found", link_name);
374 void AsGeneric::getRouteCheckParams(NetCard *src, NetCard *dst)
376 xbt_assert(src,"Cannot find a route from NULL to %s", dst->name());
377 xbt_assert(dst,"Cannot find a route from %s to NULL", src->name());
379 As *src_as = src->containingAS();
380 As *dst_as = dst->containingAS();
382 xbt_assert(src_as == dst_as, "Internal error: %s@%s and %s@%s are not in the same AS as expected. Please report that bug.",
383 src->name(), src_as->name_, dst->name(), dst_as->name_);
385 xbt_assert(this == dst_as,
386 "Internal error: route destination %s@%s is not in AS %s as expected (route source: %s@%s). Please report that bug.",
387 src->name(), dst->name(), src_as->name_, dst_as->name_, name_);
389 void AsGeneric::addRouteCheckParams(sg_platf_route_cbarg_t route) {
390 const char *srcName = route->src;
391 const char *dstName = route->dst;
392 NetCard *src = sg_netcard_by_name_or_null(srcName);
393 NetCard *dst = sg_netcard_by_name_or_null(dstName);
395 if(!route->gw_dst && !route->gw_src) {
396 XBT_DEBUG("Load Route from \"%s\" to \"%s\"", srcName, dstName);
397 xbt_assert(src, "Cannot add a route from %s to %s: %s does not exist.", srcName, dstName, srcName);
398 xbt_assert(dst, "Cannot add a route from %s to %s: %s does not exist.", srcName, dstName, dstName);
399 xbt_assert(!xbt_dynar_is_empty(route->link_list), "Empty route (between %s and %s) forbidden.", srcName, dstName);
400 xbt_assert(src->getRcType()==SURF_NETWORK_ELEMENT_HOST || src->getRcType()==SURF_NETWORK_ELEMENT_ROUTER,
401 "When defining a route, src must be an host or a router but '%s' is not. Did you meant to have an ASroute?", srcName);
402 xbt_assert(dst->getRcType()==SURF_NETWORK_ELEMENT_HOST || dst->getRcType()==SURF_NETWORK_ELEMENT_ROUTER,
403 "When defining a route, dst must be an host or a router but '%s' is not. Did you meant to have an ASroute?", dstName);
405 XBT_DEBUG("Load ASroute from %s@%s to %s@%s", srcName, route->gw_src->name(), dstName, route->gw_dst->name());
406 xbt_assert(src->getRcType()==SURF_NETWORK_ELEMENT_AS,
407 "When defining an ASroute, src must be an AS but '%s' is not", srcName);
408 xbt_assert(dst->getRcType()==SURF_NETWORK_ELEMENT_AS,
409 "When defining an ASroute, dst must be an AS but '%s' is not", dstName);
411 xbt_assert(route->gw_src->getRcType()==SURF_NETWORK_ELEMENT_HOST || route->gw_src->getRcType()==SURF_NETWORK_ELEMENT_ROUTER,
412 "When defining an ASroute, gw_src must be an host or a router but '%s' is not.", srcName);
413 xbt_assert(route->gw_dst->getRcType()==SURF_NETWORK_ELEMENT_HOST || route->gw_dst->getRcType()==SURF_NETWORK_ELEMENT_ROUTER,
414 "When defining an ASroute, gw_dst must be an host or a router but '%s' is not.", dstName);
416 xbt_assert(route->gw_src != route->gw_dst, "Cannot define an ASroute from '%s' to itself", route->gw_src->name());
418 xbt_assert(src, "Cannot add a route from %s@%s to %s@%s: %s does not exist.",
419 srcName,route->gw_src->name(), dstName,route->gw_dst->name(), srcName);
420 xbt_assert(dst, "Cannot add a route from %s@%s to %s@%s: %s does not exist.",
421 srcName,route->gw_src->name(), dstName,route->gw_dst->name(), dstName);
422 xbt_assert(!xbt_dynar_is_empty(route->link_list), "Empty route (between %s@%s and %s@%s) forbidden.",
423 srcName,route->gw_src->name(), dstName,route->gw_dst->name());