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"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network_gtnets);
12 /* surf_network_resource_t surf_network_resource = NULL; */
13 static xbt_dict_t network_link_set = NULL;
15 /* xbt_dict_t network_card_set = NULL; */
18 static int card_number = 0;
19 static network_link_GTNETS_t **routing_table = NULL;
20 static int *routing_table_size = NULL;
22 #define ROUTE(i,j) routing_table[(i)+(j)*card_number]
23 #define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
26 /** QUESTIONS for GTNetS integration
27 ** 1. Check that we did the right thing with name_service and get_resource_name
28 ** 2. Right now there is no "kill flow" in our GTNetS implementation. Do we
29 ** need to do something about this?
30 ** 3. We ignore the fact there is some max_duration on flows (see #2 above)
31 ** 4. share_resources() returns a duration, not a date, right?
32 ** 5. We don't suppoer "rates"
33 ** 6. We don't update "remaining" for ongoing flows. Is it bad?
36 /* Free memory for a network link: REMOVED BY KF */
37 static void network_link_free(void *nw_link)
39 free(((network_link_GTNETS_t)nw_link)->name);
43 /* Instantiate a new network link: UNMODIFIED BY HC */
44 /* name: some name for the link, from the XML */
45 /* bw_initial: The bandwidth value */
46 /* bw_trace: unused here */
47 /* lat_initial: The latency value */
48 /* lat_trace: not used here */
49 /* state_initial: SURF_NETWORK_LINK_ON */
50 /* state_trace: not used here */
51 static void network_link_new(char *name,
55 static int link_count=-1;
56 network_link_GTNETS_t gtnets_link;
58 /* KF: Check that the link wasn't added before */
59 if (xbt_dict_get_or_null(network_link_set, name)) {
63 /* KF: Increment the link counter for GTNetS */
67 nw_link->resource = (surf_resource_t) surf_network_resource;
69 nw_link->bw_current = bw_initial;
72 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
73 nw_link->lat_current = lat_initial;
76 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
77 nw_link->state_current = state_initial;
79 nw_link->state_event =
80 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
83 /* KF: Add the link to the GTNetS simulation */
84 if (GTNetS_add_link(link_count, bw, lat)) {
85 xbt_assert0(0,"Cannot create GTNetS link");
88 /* KF: Insert entry in the dictionary */
89 gtnets_link = xbt_new0(s_network_link_GTNETS_t,1);
90 gtnets_link->name = strcpy(name);
91 gtnets_link->bw_current = bw;
92 gtnets_link->lat_current = lat;
93 gtnets_link->id = link_count;
94 xbt_dict_set(network_link_set, name, gtnets_link, network_link_free);
99 /* free the network card: REMOVED by KF */
100 static void network_card_free(void *nw_card)
102 free(((network_card_GTNETS_t)nw_card)->name);
106 /* Instantiate a new network card: MODIFYED BY KF */
107 static int network_card_new(const char *name)
109 static int card_count=-1;
111 /* KF: Check that we haven't seen the network card before */
112 if (xbt_dict_get_or_null(network_card_set, name))
115 /* KF: Increment the card counter for GTNetS */
118 /* KF: just use the dictionary to map link names to link indices */
119 gtnets_network_card = xbt_new0(s_network_card_GTNETS_t,1);
120 gtnets_network_card->name = strcpy(name);
121 gtnets_network_card->id = card_count;
122 xbt_dict_set(network_card_set, name, gtnets_network_card, network_card_free);
124 /* KF: just return the GTNetS ID as the SURF ID */
128 /* Instantiate a new route: MODIFY BY KF */
129 static void route_new(int src_id, int dst_id, char **links, int nb_link)
132 network_link_GTNETS_t *link_list = NULL;
135 ROUTE_SIZE(src_id, dst_id) = nb_link;
136 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_GTNETS_t, nb_link));
137 for (i = 0; i < nb_link; i++) {
138 link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
146 /* KF: Build the list of gtnets link IDs */
147 gtnets_links = (int *)calloc(nb_link, sizeof(int));
148 for (i=0; i<nb_link; i++) {
149 gtnets_links[i]=(int)(xbt_dict_get(network_link_set, links[i]))
152 /* KF: Create the GTNets route */
153 if (GTNetS_add_route(src_id, dst_id, gtnets_links, nb_link)) {
154 xbt_assert0(0,"Cannot create GTNetS route");
158 /* Parse the XML for a network link */
159 static void parse_network_link(void)
164 e_surf_network_link_state_t state;
166 name = xbt_strdup(A_surfxml_network_link_name);
167 surf_parse_get_double(&bw,A_surfxml_network_link_bandwidth);
168 surf_parse_get_double(&lat,A_surfxml_network_link_latency);
169 state = SURF_NETWORK_LINK_ON;
171 /* Print values when no traces are specified */
173 tmgr_trace_t bw_trace;
175 tmgr_trace_t lat_trace;
177 surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
178 surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
179 surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
182 WARNING0("The GTNetS network model doesn't support bandwidth state traces");
184 WARNING0("The GTNetS network model doesn't support latency state traces");
186 WARNING0("The GTNetS network model doesn't support link state traces");
189 /* KF: remove several arguments to network_link_new */
190 network_link_new(name, bw, lat);
193 static int nb_link = 0;
194 static char **link_name = NULL;
195 static int src_id = -1;
196 static int dst_id = -1;
198 /* Parses a route from the XML: UNMODIFIED BY HC */
199 static void parse_route_set_endpoints(void)
201 src_id = network_card_new(A_surfxml_route_src);
202 dst_id = network_card_new(A_surfxml_route_dst);
207 /* Parses a route element from the XML: UNMODIFIED BY HC */
208 static void parse_route_elem(void)
211 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
212 link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
215 /* Create the route: UNMODIFIED BY HC */
216 static void parse_route_set_route(void)
218 route_new(src_id, dst_id, link_name, nb_link);
221 /* Main XML parsing */
222 static void parse_file(const char *file)
224 /* Figuring out the network links */
225 surf_parse_reset_parser();
226 ETag_surfxml_network_link_fun=parse_network_link;
227 surf_parse_open(file);
228 xbt_assert1((!surf_parse()),"Parse error in %s",file);
231 /* Figuring out the network cards used */
232 surf_parse_reset_parser();
233 STag_surfxml_route_fun=parse_route_set_endpoints;
234 surf_parse_open(file);
235 xbt_assert1((!surf_parse()),"Parse error in %s",file);
238 /* Building the routes */
239 surf_parse_reset_parser();
240 STag_surfxml_route_fun=parse_route_set_endpoints;
241 ETag_surfxml_route_element_fun=parse_route_elem;
242 ETag_surfxml_route_fun=parse_route_set_route;
243 surf_parse_open(file);
244 xbt_assert1((!surf_parse()),"Parse error in %s",file);
248 static void *name_service(const char *name)
250 return xbt_dict_get_or_null(network_card_set, name);
253 static const char *get_resource_name(void *resource_id)
255 return ((network_card_GTNETS_t) resource_id)->name;
258 /* We do not care about this: only used for traces */
259 static int resource_used(void *resource_id)
261 return 0; /* We don't care */
264 static int action_free(surf_action_t action)
268 xbt_swag_remove(action, action->state_set);
269 /* KF: No explicit freeing needed for GTNeTS here */
275 static void action_use(surf_action_t action)
280 static void action_cancel(surf_action_t action)
285 static void action_recycle(surf_action_t action)
290 static void action_change_state(surf_action_t action,
291 e_surf_action_state_t state)
293 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
294 /* if(((surf_action_network_GTNETS_t)action)->variable) { */
295 /* lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
296 /* ((surf_action_network_GTNETS_t)action)->variable = NULL; */
299 surf_action_change_state(action, state);
304 /* share_resources() */
305 static double share_resources(double now)
308 s_surf_action_network_GTNETS_t s_action;
309 surf_action_network_GTNETS_t action = NULL;
310 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
313 return GTNetS_get_time_to_next_flow_completion();
316 /* delta: by how many time units the simulation must advance */
317 /* In this function: change the state of actions that terminate */
318 /* The delta may not come from the network, and thus may be different (smaller)
319 than the one returned by the function above */
320 /* If the delta is a network-caused min, then do not emulate any timer in the
321 network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
323 static void update_actions_state(double now, double delta)
325 surf_action_network_GTNETS_t action = NULL;
326 surf_action_network_GTNETS_t next_action = NULL;
327 xbt_swag_t running_actions =
328 surf_network_resource->common_public->states.running_action_set;
330 double time_to_next_flow_completion = GTNetS_get_time_to_next_flow_completion();
332 if (time_to_next_flow_completion < delta) {
334 surf_action_t action;
336 if (GTNetS_run_until_next_flow_completion(&metadata)) {
337 xbt_assert0(0,"Cannot run GTNetS simulation until next flow completion");
340 action = (surf_action_t)metadata;
342 action->generic_action.remains = 0;
343 action->generic_action.finish = now + time_to_next_flow_completion;
344 action->generic_action.finish = SURF_ACTION_DONE;
345 /* TODO: Anything else here? */
347 if (GTNetS_run(delta)) {
348 xbt_assert0(0,"Cannot run GTNetS simulation");
355 /* UNUSED HERE: no traces */
356 static void update_resource_state(void *id,
357 tmgr_trace_event_t event_type,
363 /* KF: Rate not supported */
364 static surf_action_t communicate(void *src, void *dst, double size, double rate)
366 surf_action_network_GTNETS_t action = NULL;
367 network_card_GTNETS_t card_src = src;
368 network_card_GTNETS_t card_dst = dst;
369 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
370 network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
373 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);
375 action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
377 action->generic_action.using = 1;
378 action->generic_action.cost = size;
379 action->generic_action.remains = size;
380 action->generic_action.max_duration = NO_MAX_DURATION;
381 action->generic_action.start = surf_get_clock();
382 action->generic_action.finish = -1.0;
383 action->generic_action.resource_type =
384 (surf_resource_t) surf_network_resource;
386 action->generic_action.state_set =
387 surf_network_resource->common_public->states.running_action_set;
389 xbt_swag_insert(action, action->generic_action.state_set);
391 /* KF: Add a flow to the GTNets Simulation, associated to this action */
392 GTNetS_create_flow(src->id, dst->id, size, (void *)action);
394 return (surf_action_t) action;
397 /* Suspend a flow() */
398 static void action_suspend(surf_action_t action)
400 xbt_assert0(0,"action_suspend() not supported for the GTNets network model");
403 /* Resume a flow() */
404 static void action_resume(surf_action_t action)
406 xbt_assert0(0,"action_resume() not supported for the GTNets network model");
409 /* Test whether a flow is suspended */
410 static int action_is_suspended(surf_action_t action)
415 static void finalize(void)
419 xbt_dict_free(&network_card_set);
420 xbt_dict_free(&network_link_set);
421 xbt_swag_free(surf_network_resource->common_public->states.
423 xbt_swag_free(surf_network_resource->common_public->states.
425 xbt_swag_free(surf_network_resource->common_public->states.
427 xbt_swag_free(surf_network_resource->common_public->states.
429 free(surf_network_resource->common_public);
430 free(surf_network_resource->common_private);
431 free(surf_network_resource->extension_public);
433 free(surf_network_resource);
434 surf_network_resource = NULL;
437 for (i = 0; i < card_number; i++)
438 for (j = 0; j < card_number; j++)
441 routing_table = NULL;
442 free(routing_table_size);
443 routing_table_size = NULL;
452 static void surf_network_resource_init_internal(void)
454 s_surf_action_t action;
456 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
458 surf_network_resource->common_private =
459 xbt_new0(s_surf_resource_private_t, 1);
460 surf_network_resource->common_public =
461 xbt_new0(s_surf_resource_public_t, 1);
462 surf_network_resource->extension_public =
463 xbt_new0(s_surf_network_resource_extension_public_t, 1);
465 surf_network_resource->common_public->states.ready_action_set =
466 xbt_swag_new(xbt_swag_offset(action, state_hookup));
467 surf_network_resource->common_public->states.running_action_set =
468 xbt_swag_new(xbt_swag_offset(action, state_hookup));
469 surf_network_resource->common_public->states.failed_action_set =
470 xbt_swag_new(xbt_swag_offset(action, state_hookup));
471 surf_network_resource->common_public->states.done_action_set =
472 xbt_swag_new(xbt_swag_offset(action, state_hookup));
474 surf_network_resource->common_public->name_service = name_service;
475 surf_network_resource->common_public->get_resource_name =
477 surf_network_resource->common_public->action_get_state =
478 surf_action_get_state;
479 surf_network_resource->common_public->action_use = action_use;
480 surf_network_resource->common_public->action_free = action_free;
481 surf_network_resource->common_public->action_cancel = action_cancel;
482 surf_network_resource->common_public->action_recycle = action_recycle;
483 surf_network_resource->common_public->action_change_state =
485 surf_network_resource->common_public->action_set_data = surf_action_set_data;
486 surf_network_resource->common_public->name = "network";
488 surf_network_resource->common_private->resource_used = resource_used;
489 surf_network_resource->common_private->share_resources = share_resources;
490 surf_network_resource->common_private->update_actions_state =
491 update_actions_state;
492 surf_network_resource->common_private->update_resource_state =
493 update_resource_state;
494 surf_network_resource->common_private->finalize = finalize;
496 surf_network_resource->common_public->suspend = action_suspend;
497 surf_network_resource->common_public->resume = action_resume;
498 surf_network_resource->common_public->is_suspended = action_is_suspended;
500 surf_network_resource->extension_public->communicate = communicate;
502 network_link_set = xbt_dict_new();
503 network_card_set = xbt_dict_new();
505 /* HC: I am assuming that this stays in for simulation of compute tasks */
506 xbt_assert0(maxmin_system, "surf_init has to be called first!");
508 /* KF: Added the initialization for GTNetS interface */
509 if (GTNetS_initialize()) {
510 xbt_assert0(0, "impossible to initialize GTNetS interface");
514 /* HC: I put this prototype here for now but it will have to go in
515 src/include/surf.h when it is functionnal. */
516 void surf_network_resource_init_GTNETS(const char *filename);
518 void surf_network_resource_init_GTNETS(const char *filename)
520 if (surf_network_resource)
522 surf_network_resource_init_internal();
523 parse_file(filename);
524 xbt_dynar_push(resource_list, &surf_network_resource);