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"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
13 "Logging specific to the SURF network module");
15 /** QUESTIONS for GTNetS integration
16 ** 1. Check that we did the right thing with name_service and get_resource_name
17 ** 2. Right now there is no "kill flow" in our GTNetS implementation. Do we
18 ** need to do something about this?
19 ** 3. We ignore the fact there is some max_duration on flows (see #2 above)
20 ** 4. share_resources() returns a duration, not a date, right?
21 ** 5. We don't suppoer "rates"
22 ** 6. We don't update "remaining" for ongoing flows. Is it bad?
25 /* Free memory for a network link */
26 static void link_free(void *nw_link)
28 free(((network_link_GTNETS_t) nw_link)->name);
32 /* Instantiate a new network link */
33 /* name: some name for the link, from the XML */
34 /* bw: The bandwidth value */
35 /* lat: The latency value */
36 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
38 static int link_count = -1;
39 network_link_GTNETS_t gtnets_link;
41 /* If link already exists, nothing to do (FIXME: check that multiple definition match?) */
42 if (xbt_dict_get_or_null(link_set, name)) {
46 /* KF: Increment the link counter for GTNetS */
50 nw_link->model = (surf_model_t) surf_network_model;
52 nw_link->bw_current = bw_initial;
55 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
56 nw_link->lat_current = lat_initial;
59 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
60 nw_link->state_current = state_initial;
62 nw_link->state_event =
63 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
66 /* KF: Add the link to the GTNetS simulation */
67 if (gtnets_add_link(link_count, bw, lat)) {
68 xbt_assert0(0, "Cannot create GTNetS link");
71 /* KF: Insert entry in the dictionary */
72 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
73 gtnets_link->name = name;
74 gtnets_link->bw_current = bw;
75 gtnets_link->lat_current = lat;
76 gtnets_link->id = link_count;
77 /* Add the properties */
78 gtnets_link->properties = current_property_set;
80 xbt_dict_set(link_set, name, gtnets_link, link_free);
85 /* free the network card */
86 static void network_card_free(void *nw_card)
88 free(((network_card_GTNETS_t) nw_card)->name);
92 /* Instantiate a new network card: MODIFYED BY KF */
93 static int network_card_new(const char *name)
95 static int card_count = -1;
97 /* KF: Check that we haven't seen the network card before */
98 network_card_GTNETS_t card =
99 xbt_dict_get_or_null(network_card_set, name);
102 /* KF: Increment the card counter for GTNetS */
105 /* KF: just use the dictionary to map link names to link indices */
106 card = xbt_new0(s_network_card_GTNETS_t, 1);
107 card->name = xbt_strdup(name);
108 card->id = card_count;
109 xbt_dict_set(network_card_set, name, card, network_card_free);
112 /* KF: just return the GTNetS ID as the SURF ID */
116 /* Instantiate a new route: MODIFY BY KF */
117 static void route_new(int src_id, int dst_id, char **links, int nb_link)
120 network_link_GTNETS_t *link_list = NULL;
123 ROUTE_SIZE(src_id, dst_id) = nb_link;
124 link_list = (ROUTE(src_id, dst_id) =
125 xbt_new0(network_link_GTNETS_t, nb_link));
126 for (i = 0; i < nb_link; i++) {
127 link_list[i] = xbt_dict_get_or_null(link_set, links[i]);
135 /* KF: Build the list of gtnets link IDs */
136 gtnets_links = (int *) calloc(nb_link, sizeof(int));
137 for (i = 0; i < nb_link; i++) {
139 ((network_link_GTNETS_t)
140 (xbt_dict_get(link_set, links[i])))->id;
143 /* KF: Create the GTNets route */
144 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
145 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, char **links,
156 xbt_assert0(0, "In onehop_new, nb_link should be 1");
159 /* KF: Build the list of gtnets link IDs */
161 ((network_link_GTNETS_t)
162 (xbt_dict_get(link_set, links[0])))->id;
164 /* KF: Create the GTNets route */
165 if (gtnets_add_onehop_route(src_id, dst_id, linkid)) {
166 xbt_assert0(0, "Cannot create GTNetS route");
172 /* Parse the XML for a network link */
173 static void parse_link_init(void)
178 e_surf_link_state_t state;
180 name = xbt_strdup(A_surfxml_link_id);
181 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
182 surf_parse_get_double(&lat, A_surfxml_link_latency);
183 state = SURF_LINK_ON;
185 /* Print values when no traces are specified */
187 tmgr_trace_t bw_trace;
188 tmgr_trace_t state_trace;
189 tmgr_trace_t lat_trace;
191 surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
192 surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
193 surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
195 /*TODO Where is WARNING0 defined??? */
199 ("The GTNetS network model doesn't support bandwidth state traces");
202 ("The GTNetS network model doesn't support latency state traces");
205 ("The GTNetS network model doesn't support link state traces");
208 /* KF: remove several arguments to link_new */
209 current_property_set = xbt_dict_new();
210 link_new(name, bw, lat, current_property_set);
213 static int nb_link = 0;
214 static char **link_name = NULL;
215 static int src_id = -1;
216 static int dst_id = -1;
218 /* Parses a route from the XML: UNMODIFIED BY HC */
219 static void parse_route_set_endpoints(void)
221 src_id = network_card_new(A_surfxml_route_src);
222 dst_id = network_card_new(A_surfxml_route_dst);
227 route_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
231 static void parse_route_set_routers(void)
233 int id = network_card_new(A_surfxml_router_id);
235 /* KF: Create the GTNets router */
236 if (gtnets_add_router(id)) {
237 xbt_assert0(0, "Cannot add GTNetS router");
241 //The following is common to all and has been relocated to surfxml_parse
242 /* Parses a route element from the XML: UNMODIFIED BY HC */
243 /*static void parse_route_elem(void)
246 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
247 link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
251 /* Create the route (more than one hops): MODIFIED BY KF */
252 static void parse_route_set_route(void)
255 route_new(src_id, dst_id, link_name, nb_link);
257 char *name = bprintf("%x#%x",src_id, dst_id);
258 xbt_dict_set(route_table, name, route_link_list, NULL);
262 //This is not used anymore. one hop routes are created in add_route
263 /* Create the one-hope route: BY KF */
264 static void parse_route_set_onehop_route(void)
267 route_onehop_new(src_id, dst_id, link_name, nb_link);
270 static void add_route()
273 unsigned int cpt = 0;
275 xbt_dict_cursor_t cursor = NULL;
276 char *key,*data, *end;
277 const char *sep = "#";
278 xbt_dynar_t links, keys;
280 xbt_dict_foreach(route_table, cursor, key, data) {
282 links = (xbt_dynar_t)data;
283 keys = xbt_str_split_str(key, sep);
285 nb_link = xbt_dynar_length(links);
286 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
288 src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
289 dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
293 xbt_dynar_foreach (links, cpt, link) {
295 link_name[i++] = xbt_dict_get(link_set, link);
298 RETHROW1("Link %s not found (dict raised this exception: %s)", link);
302 route_new(src_id, dst_id, link_name, nb_link);
304 route_onehop_new(src_id, dst_id, link_name, nb_link);
307 xbt_dict_free(&route_table);
310 /* Main XML parsing */
311 static void define_callbacks(const char *file)
313 surfxml_add_callback(STag_surfxml_router_cb_list, &parse_route_set_routers);
314 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
315 surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
316 surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
317 /* surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_onehop_route);*/
318 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
321 static void *name_service(const char *name)
323 return xbt_dict_get_or_null(network_card_set, name);
326 static const char *get_resource_name(void *resource_id)
328 return ((network_card_GTNETS_t) resource_id)->name;
331 static xbt_dict_t get_properties(void *link)
333 return ((network_card_GTNETS_t) link)->properties;
337 /* We do not care about this: only used for traces */
338 static int resource_used(void *resource_id)
340 return 0; /* We don't care */
343 static int action_free(surf_action_t action)
346 if (!action->using) {
347 xbt_swag_remove(action, action->state_set);
348 /* KF: No explicit freeing needed for GTNeTS here */
355 static void action_use(surf_action_t action)
360 static void action_cancel(surf_action_t action)
362 xbt_assert0(0, "Cannot cancel GTNetS flow");
366 static void action_recycle(surf_action_t action)
368 xbt_assert0(0, "Cannot recycle GTNetS flow");
372 static void action_change_state(surf_action_t action,
373 e_surf_action_state_t state)
375 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
376 /* if(((surf_action_network_GTNETS_t)action)->variable) { */
377 /* lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
378 /* ((surf_action_network_GTNETS_t)action)->variable = NULL; */
381 surf_action_change_state(action, state);
386 /* share_resources() */
387 static double share_resources(double now)
389 xbt_swag_t running_actions = surf_network_model->common_public->states.running_action_set;
391 //get the first relevant value from the running_actions list
392 if (!xbt_swag_size(running_actions))
395 return gtnets_get_time_to_next_flow_completion();
398 /* delta: by how many time units the simulation must advance */
399 /* In this function: change the state of actions that terminate */
400 /* The delta may not come from the network, and thus may be different (smaller)
401 than the one returned by the function above */
402 /* If the delta is a network-caused min, then do not emulate any timer in the
403 network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
405 static void update_actions_state(double now, double delta)
407 surf_action_network_GTNETS_t action = NULL;
408 // surf_action_network_GTNETS_t next_action = NULL;
409 xbt_swag_t running_actions =
410 surf_network_model->common_public->states.running_action_set;
412 double time_to_next_flow_completion =
413 gtnets_get_time_to_next_flow_completion();
415 /* If there are no renning flows, just return */
416 if (time_to_next_flow_completion < 0.0) {
420 /*KF: if delta == time_to_next_flow_completion, too. */
421 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
427 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
429 "Cannot run GTNetS simulation until next flow completion");
433 "GTNetS simulation couldn't find a flow that would complete");
438 xbt_swag_foreach(action, running_actions) {
439 DEBUG1("]]]]]]]]] Action remains old value: %f", action->generic_action.remains);
440 double remain = gtnets_get_flow_rx(action);
441 //need to trust this remain value
443 action->generic_action.remains=0;
445 action->generic_action.remains-=remain;
447 DEBUG1("[[[[[[[[[ Action remains new value: %f", action->generic_action.remains);
450 for (i = 0; i < num_flows; i++) {
451 action = (surf_action_network_GTNETS_t) (metadata[i]);
453 action->generic_action.finish = now + time_to_next_flow_completion;
454 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
455 /* TODO: Anything else here? */
457 //need to map this action to the gtnets engine
458 DEBUG1("]]]]]]]]] Action remains old value: %f", action->generic_action.remains);
459 action->generic_action.remains -= gtnets_get_flow_rx(metadata[i]);
460 DEBUG1("[[[[[[[[[ Action remains new value: %f", action->generic_action.remains);
464 } else { /* run for a given number of seconds */
465 if (gtnets_run(delta)) {
466 xbt_assert0(0, "Cannot run GTNetS simulation");
473 /* UNUSED HERE: no traces */
474 static void update_resource_state(void *id,
475 tmgr_trace_event_t event_type,
476 double value, double date)
478 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
482 /* KF: Rate not supported */
483 static surf_action_t communicate(void *src, void *dst, double size,
486 surf_action_network_GTNETS_t action = NULL;
487 network_card_GTNETS_t card_src = src;
488 network_card_GTNETS_t card_dst = dst;
490 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
491 network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
495 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);
498 action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
500 action->generic_action.using = 1;
501 action->generic_action.cost = size;
502 action->generic_action.remains = size;
503 /* Max durations are not supported */
504 action->generic_action.max_duration = NO_MAX_DURATION;
505 action->generic_action.start = surf_get_clock();
506 action->generic_action.finish = -1.0;
507 action->generic_action.model_type =
508 (surf_model_t) surf_network_model;
510 action->generic_action.state_set =
511 surf_network_model->common_public->states.running_action_set;
513 xbt_swag_insert(action, action->generic_action.state_set);
515 /* KF: Add a flow to the GTNets Simulation, associated to this action */
516 if (gtnets_create_flow(card_src->id, card_dst->id, size, (void *) action)
518 xbt_assert2(0, "Not route between host %s and host %s", card_src->name,
522 return (surf_action_t) action;
525 /* Suspend a flow() */
526 static void action_suspend(surf_action_t action)
529 "action_suspend() not supported for the GTNets network model");
532 /* Resume a flow() */
533 static void action_resume(surf_action_t action)
536 "action_resume() not supported for the GTNets network model");
539 /* Test whether a flow is suspended */
540 static int action_is_suspended(surf_action_t action)
545 static void finalize(void)
550 xbt_dict_free(&network_card_set);
551 xbt_dict_free(&link_set);
552 xbt_swag_free(surf_network_model->common_public->states.
554 xbt_swag_free(surf_network_model->common_public->states.
556 xbt_swag_free(surf_network_model->common_public->states.
558 xbt_swag_free(surf_network_model->common_public->states.
560 free(surf_network_model->common_public);
561 free(surf_network_model->common_private);
562 free(surf_network_model->extension_public);
564 free(surf_network_model);
565 surf_network_model = NULL;
568 for (i = 0; i < card_number; i++)
569 for (j = 0; j < card_number; j++)
572 routing_table = NULL;
573 free(routing_table_size);
574 routing_table_size = NULL;
583 static void surf_network_model_init_internal(void)
585 s_surf_action_t action;
587 surf_network_model = xbt_new0(s_surf_network_model_t, 1);
589 surf_network_model->common_private =
590 xbt_new0(s_surf_model_private_t, 1);
591 surf_network_model->common_public =
592 xbt_new0(s_surf_model_public_t, 1);
593 surf_network_model->extension_public =
594 xbt_new0(s_surf_network_model_extension_public_t, 1);
596 surf_network_model->common_public->states.ready_action_set =
597 xbt_swag_new(xbt_swag_offset(action, state_hookup));
598 surf_network_model->common_public->states.running_action_set =
599 xbt_swag_new(xbt_swag_offset(action, state_hookup));
600 surf_network_model->common_public->states.failed_action_set =
601 xbt_swag_new(xbt_swag_offset(action, state_hookup));
602 surf_network_model->common_public->states.done_action_set =
603 xbt_swag_new(xbt_swag_offset(action, state_hookup));
605 surf_network_model->common_public->name_service = name_service;
606 surf_network_model->common_public->get_resource_name =
608 surf_network_model->common_public->action_get_state =
609 surf_action_get_state;
610 surf_network_model->common_public->action_use = action_use;
611 surf_network_model->common_public->action_free = action_free;
612 surf_network_model->common_public->action_cancel = action_cancel;
613 surf_network_model->common_public->action_recycle = action_recycle;
614 surf_network_model->common_public->action_change_state =
616 surf_network_model->common_public->action_set_data =
617 surf_action_set_data;
618 surf_network_model->common_public->name = "network";
620 surf_network_model->common_private->resource_used = resource_used;
621 surf_network_model->common_private->share_resources = share_resources;
622 surf_network_model->common_private->update_actions_state =
623 update_actions_state;
624 surf_network_model->common_private->update_resource_state = update_resource_state;
625 surf_network_model->common_private->finalize = finalize;
627 surf_network_model->common_public->suspend = action_suspend;
628 surf_network_model->common_public->resume = action_resume;
629 surf_network_model->common_public->is_suspended = action_is_suspended;
631 surf_network_model->extension_public->communicate = communicate;
633 /*for the props of the link*/
634 surf_network_model->common_public->get_properties = get_properties;
636 link_set = xbt_dict_new();
637 network_card_set = xbt_dict_new();
639 /* KF: Added the initialization for GTNetS interface */
640 if (gtnets_initialize()) {
641 xbt_assert0(0, "impossible to initialize GTNetS interface");