3 /* Copyright (c) 2005 Henri Casanova. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "network_gtnets_private.h"
9 #include "gtnets/gtnets_interface.h"
13 static double time_to_next_flow_completion = -1;
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
16 "Logging specific to the SURF network module");
18 /** QUESTIONS for GTNetS integration
19 ** 1. Check that we did the right thing with name_service and get_resource_name
20 ** 2. Right now there is no "kill flow" in our GTNetS implementation. Do we
21 ** need to do something about this?
22 ** 3. We ignore the fact there is some max_duration on flows (see #2 above)
23 ** 4. share_resources() returns a duration, not a date, right?
24 ** 5. We don't suppoer "rates"
25 ** 6. We don't update "remaining" for ongoing flows. Is it bad?
28 static int src_id = -1;
29 static int dst_id = -1;
31 /* Free memory for a network link */
32 static void link_free(void *nw_link)
34 free(((network_link_GTNETS_t) nw_link)->name);
35 xbt_dict_free(&(((network_link_GTNETS_t) nw_link)->properties));
39 /* Instantiate a new network link */
40 /* name: some name for the link, from the XML */
41 /* bw: The bandwidth value */
42 /* lat: The latency value */
43 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
45 static int link_count = -1;
46 network_link_GTNETS_t gtnets_link;
48 /* If link already exists, nothing to do (FIXME: check that multiple definition match?) */
49 if (xbt_dict_get_or_null(link_set, name)) {
53 /* KF: Increment the link counter for GTNetS */
57 nw_link->model = surf_network_model;
59 nw_link->bw_current = bw_initial;
62 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
63 nw_link->lat_current = lat_initial;
66 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
67 nw_link->state_current = state_initial;
69 nw_link->state_event =
70 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
73 /* KF: Add the link to the GTNetS simulation */
74 if (gtnets_add_link(link_count, bw, lat)) {
75 xbt_assert0(0, "Cannot create GTNetS link");
78 /* KF: Insert entry in the dictionary */
79 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
80 gtnets_link->name = name;
81 gtnets_link->bw_current = bw;
82 gtnets_link->lat_current = lat;
83 gtnets_link->id = link_count;
84 /* Add the properties */
85 gtnets_link->properties = props;
87 xbt_dict_set(link_set, name, gtnets_link, link_free);
92 /* free the network card */
93 static void network_card_free(void *nw_card)
95 free(((network_card_GTNETS_t) nw_card)->name);
99 /* Instantiate a new network card: MODIFYED BY KF */
100 static int network_card_new(const char *name)
102 static int card_count = -1;
104 XBT_IN1("(%s)", name);
105 /* KF: Check that we haven't seen the network card before */
106 network_card_GTNETS_t card =
107 surf_model_resource_by_name(surf_network_model, name);
110 /* KF: Increment the card counter for GTNetS */
113 /* KF: just use the dictionary to map link names to link indices */
114 card = xbt_new0(s_network_card_GTNETS_t, 1);
115 card->name = xbt_strdup(name);
116 card->id = card_count;
117 xbt_dict_set(surf_model_resource_set(surf_network_model), name, card,
121 LOG1(xbt_log_priority_trace, " return %d", card->id);
123 /* KF: just return the GTNetS ID as the SURF ID */
127 /* Instantiate a new route: MODIFY BY KF */
128 static void route_new(int src_id, int dst_id, network_link_GTNETS_t * links,
133 XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
134 src_id, dst_id, links, nb_link);
136 /* KF: Build the list of gtnets link IDs */
137 gtnets_links = (int *) calloc(nb_link, sizeof(int));
138 for (i = 0; i < nb_link; i++) {
139 gtnets_links[i] = links[i]->id;
142 /* KF: Create the GTNets route */
143 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
144 xbt_assert0(0, "Cannot create GTNetS route");
149 /* Instantiate a new route: MODIFY BY KF */
150 static void route_onehop_new(int src_id, int dst_id,
151 network_link_GTNETS_t * links, int nb_link)
156 xbt_assert0(0, "In onehop_new, nb_link should be 1");
159 /* KF: Build the linbst of gtnets link IDs */
160 linkid = links[0]->id;
162 /* KF: Create the GTNets route */
163 if (gtnets_add_onehop_route(src_id, dst_id, linkid)) {
164 xbt_assert0(0, "Cannot create GTNetS route");
170 /* Parse the XML for a network link */
171 static void parse_link_init(void)
176 e_surf_link_state_t state;
178 name = xbt_strdup(A_surfxml_link_id);
179 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
180 surf_parse_get_double(&lat, A_surfxml_link_latency);
181 state = SURF_LINK_ON;
183 tmgr_trace_t bw_trace;
184 tmgr_trace_t state_trace;
185 tmgr_trace_t lat_trace;
187 surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
188 surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
189 surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
192 INFO0("The GTNetS network model doesn't support bandwidth state traces");
194 INFO0("The GTNetS network model doesn't support latency state traces");
196 INFO0("The GTNetS network model doesn't support link state traces");
198 current_property_set = xbt_dict_new();
199 link_new(name, bw, lat, current_property_set);
202 /* Parses a route from the XML: UNMODIFIED BY HC */
203 static void parse_route_set_endpoints(void)
205 src_id = network_card_new(A_surfxml_route_src);
206 dst_id = network_card_new(A_surfxml_route_dst);
207 route_action = A_surfxml_route_action;
211 static void parse_route_set_routers(void)
213 int id = network_card_new(A_surfxml_router_id);
215 /* KF: Create the GTNets router */
216 if (gtnets_add_router(id)) {
217 xbt_assert0(0, "Cannot add GTNetS router");
221 /* Create the route (more than one hops): MODIFIED BY KF */
222 static void parse_route_set_route(void)
225 if (src_id != -1 && dst_id != -1) {
226 name = bprintf("%x#%x", src_id, dst_id);
227 manage_route(route_table, name, route_action, 0);
232 static void add_route()
235 unsigned int cpt = 0;
236 int link_list_capacity = 0;
238 xbt_dict_cursor_t cursor = NULL;
239 char *key, *data, *end;
240 const char *sep = "#";
241 xbt_dynar_t links, keys;
242 static network_link_GTNETS_t *link_list = NULL;
246 xbt_dict_foreach(route_table, cursor, key, data) {
249 links = (xbt_dynar_t) data;
250 keys = xbt_str_split_str(key, sep);
252 link_list_capacity = xbt_dynar_length(links);
253 link_list = xbt_new(network_link_GTNETS_t, link_list_capacity);
255 src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
256 dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
257 xbt_dynar_free(&keys);
259 xbt_dynar_foreach(links, cpt, link) {
261 link_list[nb_link++] = xbt_dict_get(link_set, link);
264 RETHROW1("Link %s not found (dict raised this exception: %s)", link);
268 route_onehop_new(src_id, dst_id, link_list, nb_link);
271 xbt_dict_foreach(route_table, cursor, key, data) {
274 links = (xbt_dynar_t) data;
275 keys = xbt_str_split_str(key, sep);
277 link_list_capacity = xbt_dynar_length(links);
278 link_list = xbt_new(network_link_GTNETS_t, link_list_capacity);
280 src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
281 dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
282 xbt_dynar_free(&keys);
284 xbt_dynar_foreach(links, cpt, link) {
286 link_list[nb_link++] = xbt_dict_get(link_set, link);
289 RETHROW1("Link %s not found (dict raised this exception: %s)", link);
293 route_new(src_id, dst_id, link_list, nb_link);
296 xbt_dict_free(&route_table);
297 gtnets_print_topology();
301 /* Main XML parsing */
302 static void define_callbacks(const char *file)
304 surfxml_add_callback(STag_surfxml_router_cb_list, &parse_route_set_routers);
305 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
306 surfxml_add_callback(STag_surfxml_route_cb_list,
307 &parse_route_set_endpoints);
308 surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
309 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
312 static const char *get_resource_name(void *resource_id)
314 return ((network_card_GTNETS_t) resource_id)->name;
317 static xbt_dict_t get_properties(void *link)
319 return ((network_card_GTNETS_t) link)->properties;
323 /* We do not care about this: only used for traces */
324 static int resource_used(void *resource_id)
326 return 0; /* We don't care */
329 static int action_free(surf_action_t action)
332 if (!action->refcount) {
333 xbt_swag_remove(action, action->state_set);
334 /* KF: No explicit freeing needed for GTNeTS here */
341 static void action_use(surf_action_t action)
346 static void action_cancel(surf_action_t action)
348 xbt_assert0(0, "Cannot cancel GTNetS flow");
352 static void action_recycle(surf_action_t action)
354 xbt_assert0(0, "Cannot recycle GTNetS flow");
358 static void action_change_state(surf_action_t action,
359 e_surf_action_state_t state)
361 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
362 /* if(((surf_action_network_GTNETS_t)action)->variable) { */
363 /* lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
364 /* ((surf_action_network_GTNETS_t)action)->variable = NULL; */
367 surf_action_change_state(action, state);
372 /* share_resources() */
373 static double share_resources(double now)
375 xbt_swag_t running_actions =
376 surf_network_model->common_public.states.running_action_set;
378 //get the first relevant value from the running_actions list
379 if (!xbt_swag_size(running_actions))
382 xbt_assert0(time_to_next_flow_completion,
383 "Time to next flow completion not initialized!\n");
385 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
387 return time_to_next_flow_completion;
390 /* delta: by how many time units the simulation must advance */
391 /* In this function: change the state of actions that terminate */
392 /* The delta may not come from the network, and thus may be different (smaller)
393 than the one returned by the function above */
394 /* If the delta is a network-caused min, then do not emulate any timer in the
395 network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
397 static void update_actions_state(double now, double delta)
399 surf_action_network_GTNETS_t action = NULL;
400 // surf_action_network_GTNETS_t next_action = NULL;
401 xbt_swag_t running_actions =
402 surf_network_model->common_public.states.running_action_set;
404 /* If there are no renning flows, just return */
405 if (time_to_next_flow_completion < 0.0) {
409 /*KF: if delta == time_to_next_flow_completion, too. */
410 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
416 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
418 "Cannot run GTNetS simulation until next flow completion");
422 "GTNetS simulation couldn't find a flow that would complete");
425 xbt_swag_foreach(action, running_actions) {
426 DEBUG2("Action (%p) remains old value: %f", action,
427 action->generic_action.remains);
428 double remain = gtnets_get_flow_rx(action);
429 DEBUG1("Remain value returned by GTNetS : %f", remain);
430 //need to trust this remain value
432 action->generic_action.remains = 0;
434 action->generic_action.remains = action->generic_action.cost - remain;
436 DEBUG2("Action (%p) remains new value: %f", action,
437 action->generic_action.remains);
440 for (i = 0; i < num_flows; i++) {
441 action = (surf_action_network_GTNETS_t) (metadata[i]);
443 action->generic_action.finish = now + time_to_next_flow_completion;
444 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
445 DEBUG1("----> Action (%p) just terminated", action);
449 } else { /* run for a given number of seconds */
450 if (gtnets_run(delta)) {
451 xbt_assert0(0, "Cannot run GTNetS simulation");
458 /* UNUSED HERE: no traces */
459 static void update_resource_state(void *id,
460 tmgr_trace_event_t event_type,
461 double value, double date)
463 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
467 /* KF: Rate not supported */
468 static surf_action_t communicate(void *src, void *dst, double size,
471 surf_action_network_GTNETS_t action = NULL;
472 network_card_GTNETS_t card_src = src;
473 network_card_GTNETS_t card_dst = dst;
475 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
476 network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
480 xbt_assert2(route_size,"You're trying to send data from %s to %s but there is no connexion between these two cards.", card_src->name, card_dst->name);
483 action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
485 action->generic_action.refcount = 1;
486 action->generic_action.cost = size;
487 action->generic_action.remains = size;
488 /* Max durations are not supported */
489 action->generic_action.max_duration = NO_MAX_DURATION;
490 action->generic_action.start = surf_get_clock();
491 action->generic_action.finish = -1.0;
492 action->generic_action.model_type = surf_network_model;
494 action->generic_action.state_set =
495 surf_network_model->common_public.states.running_action_set;
497 xbt_swag_insert(action, action->generic_action.state_set);
499 /* KF: Add a flow to the GTNets Simulation, associated to this action */
500 if (gtnets_create_flow(card_src->id, card_dst->id, size, (void *) action)
502 xbt_assert2(0, "Not route between host %s and host %s", card_src->name,
506 return (surf_action_t) action;
509 /* Suspend a flow() */
510 static void action_suspend(surf_action_t action)
513 "action_suspend() not supported for the GTNets network model");
516 /* Resume a flow() */
517 static void action_resume(surf_action_t action)
520 "action_resume() not supported for the GTNets network model");
523 /* Test whether a flow is suspended */
524 static int action_is_suspended(surf_action_t action)
529 static void finalize(void)
531 xbt_dict_free(&link_set);
533 surf_model_exit(surf_network_model);
535 free(surf_network_model);
536 surf_network_model = NULL;
541 static void surf_network_model_init_internal(void)
543 s_surf_action_t action;
545 surf_network_model = xbt_new0(s_surf_network_model_t, 1);
547 surf_model_init(surf_network_model);
549 surf_network_model->common_public.name_service = name_service;
550 surf_network_model->common_public.get_resource_name = get_resource_name;
551 surf_network_model->common_public.action_get_state = surf_action_get_state;
552 surf_network_model->common_public.action_use = action_use;
553 surf_network_model->common_public.action_free = action_free;
554 surf_network_model->common_public.action_cancel = action_cancel;
555 surf_network_model->common_public.action_recycle = action_recycle;
556 surf_network_model->common_public.action_change_state = action_change_state;
557 surf_network_model->common_public.action_set_data = surf_action_set_data;
558 surf_network_model->common_public.name = "network";
560 surf_network_model->model_private->resource_used = resource_used;
561 surf_network_model->model_private->share_resources = share_resources;
562 surf_network_model->model_private->update_actions_state =
563 update_actions_state;
564 surf_network_model->model_private->update_resource_state =
565 update_resource_state;
566 surf_network_model->model_private->finalize = finalize;
568 surf_network_model->common_public.suspend = action_suspend;
569 surf_network_model->common_public.resume = action_resume;
570 surf_network_model->common_public.is_suspended = action_is_suspended;
572 surf_network_model->extension.network.communicate = communicate;
574 /*for the props of the link */
575 surf_network_model->common_public.get_properties = get_properties;
577 link_set = xbt_dict_new();
579 /* KF: Added the initialization for GTNetS interface */
580 if (gtnets_initialize()) {
581 xbt_assert0(0, "impossible to initialize GTNetS interface");
586 void surf_network_model_init_GTNETS(const char *filename)
588 if (surf_network_model)
590 surf_network_model_init_internal();
591 define_callbacks(filename);
592 xbt_dynar_push(model_list, &surf_network_model);
594 update_model_description(surf_network_model_description,
595 "GTNets", surf_network_model);