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. What's the deal with name_service and get_resource_name
28 ** Right now our local dictionaries contain only integers
29 ** and not structures, but it seems that surf_network_resource->common_public
30 ** needs something in it, for the above.
31 ** 2. Right now there is no "kill flow" in our GTNetS implementation. Do we
32 ** need to do something about this?
33 ** 3. We didn't reall do anything with the "action" stuff, which we assume
35 ** 4. We ignore the fact there is some max_duration on flows (see #2 above)
36 ** 5. share_resources() returns a duration, not a date, right?
37 ** 6. How do we tell the user that "rates" are not supported?
38 ** 7. We don't update "remaining" for ongoing flows. Is it bad?
41 /* Free memory for a network link: REMOVED BY KF */
42 static void network_link_free(void *nw_link)
44 free(((network_link_GTNETS_t)nw_link)->name);
48 /* Instantiate a new network link: UNMODIFIED BY HC */
49 /* name: some name for the link, from the XML */
50 /* bw_initial: The bandwidth value */
51 /* bw_trace: unused here */
52 /* lat_initial: The latency value */
53 /* lat_trace: not used here */
54 /* state_initial: SURF_NETWORK_LINK_ON */
55 /* state_trace: not used here */
56 static void network_link_new(char *name,
60 static int link_count=-1;
61 network_link_GTNETS_t gtnets_link;
63 /* KF: Check that the link wasn't added before */
64 if (xbt_dict_get_or_null(network_link_set, name)) {
68 /* KF: Increment the link counter for GTNetS */
72 nw_link->resource = (surf_resource_t) surf_network_resource;
74 nw_link->bw_current = bw_initial;
77 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
78 nw_link->lat_current = lat_initial;
81 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
82 nw_link->state_current = state_initial;
84 nw_link->state_event =
85 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
88 /* KF: Add the link to the GTNetS simulation */
89 if (GTNetS_add_link(link_count, bw, lat)) {
90 xbt_assert0(0,"Cannot create GTNetS link");
93 /* KF: Insert entry in the dictionary */
94 gtnets_link = xbt_new0(s_network_link_GTNETS_t,1);
95 gtnets_link->name = strcpy(name);
96 gtnets_link->bw_current = bw;
97 gtnets_link->lat_current = lat;
98 gtnets_link->id = link_count;
99 xbt_dict_set(network_link_set, name, gtnets_link, network_link_free);
104 /* free the network card: REMOVED by KF */
105 static void network_card_free(void *nw_card)
107 free(((network_card_GTNETS_t)nw_card)->name);
111 /* Instantiate a new network card: MODIFYED BY KF */
112 static int network_card_new(const char *name)
114 static int card_count=-1;
116 /* KF: Check that we haven't seen the network card before */
117 if (xbt_dict_get_or_null(network_card_set, name))
120 /* KF: Increment the card counter for GTNetS */
123 /* KF: just use the dictionary to map link names to link indices */
124 gtnets_network_card = xbt_new0(s_network_card_GTNETS_t,1);
125 gtnets_network_card->name = strcpy(name);
126 gtnets_network_card->id = card_count;
127 xbt_dict_set(network_card_set, name, gtnets_network_card, network_card_free);
129 /* KF: just return the GTNetS ID as the SURF ID */
133 /* Instantiate a new route: MODIFY BY KF */
134 static void route_new(int src_id, int dst_id, char **links, int nb_link)
137 network_link_GTNETS_t *link_list = NULL;
140 ROUTE_SIZE(src_id, dst_id) = nb_link;
141 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_GTNETS_t, nb_link));
142 for (i = 0; i < nb_link; i++) {
143 link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
151 /* KF: Build the list of gtnets link IDs */
152 gtnets_links = (int *)calloc(nb_link, sizeof(int));
153 for (i=0; i<nb_link; i++) {
154 gtnets_links[i]=(int)(xbt_dict_get(network_link_set, links[i]))
157 /* KF: Create the GTNets route */
158 if (GTNetS_add_route(src_id, dst_id, gtnets_links, nb_link)) {
159 xbt_assert0(0,"Cannot create GTNetS route");
163 /* Parse the XML for a network link */
164 static void parse_network_link(void)
169 e_surf_network_link_state_t state;
171 name = xbt_strdup(A_surfxml_network_link_name);
172 surf_parse_get_double(&bw,A_surfxml_network_link_bandwidth);
173 surf_parse_get_double(&lat,A_surfxml_network_link_latency);
174 state = SURF_NETWORK_LINK_ON;
176 /* Print values when no traces are specified */
178 tmgr_trace_t bw_trace;
180 tmgr_trace_t lat_trace;
182 surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
183 surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
184 surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
187 WARNING0("The GTNetS network model doesn't support bandwidth state traces");
189 WARNING0("The GTNetS network model doesn't support latency state traces");
191 WARNING0("The GTNetS network model doesn't support link state traces");
194 /* KF: remove several arguments to network_link_new */
195 network_link_new(name, bw, lat);
198 static int nb_link = 0;
199 static char **link_name = NULL;
200 static int src_id = -1;
201 static int dst_id = -1;
203 /* Parses a route from the XML: UNMODIFIED BY HC */
204 static void parse_route_set_endpoints(void)
206 src_id = network_card_new(A_surfxml_route_src);
207 dst_id = network_card_new(A_surfxml_route_dst);
212 /* Parses a route element from the XML: UNMODIFIED BY HC */
213 static void parse_route_elem(void)
216 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
217 link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
220 /* Create the route: UNMODIFIED BY HC */
221 static void parse_route_set_route(void)
223 route_new(src_id, dst_id, link_name, nb_link);
226 /* Main XML parsing */
227 static void parse_file(const char *file)
229 /* Figuring out the network links */
230 surf_parse_reset_parser();
231 ETag_surfxml_network_link_fun=parse_network_link;
232 surf_parse_open(file);
233 xbt_assert1((!surf_parse()),"Parse error in %s",file);
236 /* Figuring out the network cards used */
237 surf_parse_reset_parser();
238 STag_surfxml_route_fun=parse_route_set_endpoints;
239 surf_parse_open(file);
240 xbt_assert1((!surf_parse()),"Parse error in %s",file);
243 /* Building the routes */
244 surf_parse_reset_parser();
245 STag_surfxml_route_fun=parse_route_set_endpoints;
246 ETag_surfxml_route_element_fun=parse_route_elem;
247 ETag_surfxml_route_fun=parse_route_set_route;
248 surf_parse_open(file);
249 xbt_assert1((!surf_parse()),"Parse error in %s",file);
253 static void *name_service(const char *name)
255 return xbt_dict_get_or_null(network_card_set, name);
258 static const char *get_resource_name(void *resource_id)
260 return ((network_card_GTNETS_t) resource_id)->name;
263 /* We do not care about this: only used for traces */
264 static int resource_used(void *resource_id)
266 return 0; /* We don't care */
269 static int action_free(surf_action_t action)
273 xbt_swag_remove(action, action->state_set);
274 /* KF: No explicit freeing needed for GTNeTS here */
280 static void action_use(surf_action_t action)
285 static void action_cancel(surf_action_t action)
290 static void action_recycle(surf_action_t action)
295 static void action_change_state(surf_action_t action,
296 e_surf_action_state_t state)
298 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
299 /* if(((surf_action_network_GTNETS_t)action)->variable) { */
300 /* lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
301 /* ((surf_action_network_GTNETS_t)action)->variable = NULL; */
304 surf_action_change_state(action, state);
309 /* share_resources() */
310 static double share_resources(double now)
313 s_surf_action_network_GTNETS_t s_action;
314 surf_action_network_GTNETS_t action = NULL;
315 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
318 return GTNetS_get_time_to_next_flow_completion();
321 /* delta: by how many time units the simulation must advance */
322 /* In this function: change the state of actions that terminate */
323 /* The delta may not come from the network, and thus may be different (smaller)
324 than the one returned by the function above */
325 /* If the delta is a network-caused min, then do not emulate any timer in the
326 network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
328 static void update_actions_state(double now, double delta)
330 surf_action_network_GTNETS_t action = NULL;
331 surf_action_network_GTNETS_t next_action = NULL;
332 xbt_swag_t running_actions =
333 surf_network_resource->common_public->states.running_action_set;
335 double time_to_next_flow_completion = GTNetS_get_time_to_next_flow_completion();
337 if (time_to_next_flow_completion < delta) {
339 surf_action_t action;
341 if (GTNetS_run_until_next_flow_completion(&metadata)) {
342 xbt_assert0(0,"Cannot run GTNetS simulation until next flow completion");
345 action = (surf_action_t)metadata;
347 action->generic_action.remains = 0;
348 action->generic_action.finish = now + time_to_next_flow_completion;
349 action->generic_action.finish = SURF_ACTION_DONE;
350 /* TODO: Anything else here? */
352 if (GTNetS_run(delta)) {
353 xbt_assert0(0,"Cannot run GTNetS simulation");
360 /* UNUSED HERE: no traces */
361 static void update_resource_state(void *id,
362 tmgr_trace_event_t event_type,
368 /* KF: Rate not supported */
369 static surf_action_t communicate(void *src, void *dst, double size, double rate)
371 surf_action_network_GTNETS_t action = NULL;
372 network_card_GTNETS_t card_src = src;
373 network_card_GTNETS_t card_dst = dst;
374 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
375 network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
378 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);
380 action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
382 action->generic_action.using = 1;
383 action->generic_action.cost = size;
384 action->generic_action.remains = size;
385 action->generic_action.max_duration = NO_MAX_DURATION;
386 action->generic_action.start = surf_get_clock();
387 action->generic_action.finish = -1.0;
388 action->generic_action.resource_type =
389 (surf_resource_t) surf_network_resource;
391 action->generic_action.state_set =
392 surf_network_resource->common_public->states.running_action_set;
394 xbt_swag_insert(action, action->generic_action.state_set);
396 /* KF: Add a flow to the GTNets Simulation, associated to this action */
397 GTNetS_create_flow(src->id, dst->id, size, (void *)action);
399 return (surf_action_t) action;
402 /* Suspend a flow() */
403 static void action_suspend(surf_action_t action)
405 xbt_assert0(0,"action_suspend() not supported for the GTNets network model");
408 /* Resume a flow() */
409 static void action_resume(surf_action_t action)
411 xbt_assert0(0,"action_resume() not supported for the GTNets network model");
414 /* Test whether a flow is suspended */
415 static int action_is_suspended(surf_action_t action)
420 static void finalize(void)
424 xbt_dict_free(&network_card_set);
425 xbt_dict_free(&network_link_set);
426 xbt_swag_free(surf_network_resource->common_public->states.
428 xbt_swag_free(surf_network_resource->common_public->states.
430 xbt_swag_free(surf_network_resource->common_public->states.
432 xbt_swag_free(surf_network_resource->common_public->states.
434 free(surf_network_resource->common_public);
435 free(surf_network_resource->common_private);
436 free(surf_network_resource->extension_public);
438 free(surf_network_resource);
439 surf_network_resource = NULL;
442 for (i = 0; i < card_number; i++)
443 for (j = 0; j < card_number; j++)
446 routing_table = NULL;
447 free(routing_table_size);
448 routing_table_size = NULL;
457 static void surf_network_resource_init_internal(void)
459 s_surf_action_t action;
461 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
463 surf_network_resource->common_private =
464 xbt_new0(s_surf_resource_private_t, 1);
465 surf_network_resource->common_public =
466 xbt_new0(s_surf_resource_public_t, 1);
467 surf_network_resource->extension_public =
468 xbt_new0(s_surf_network_resource_extension_public_t, 1);
470 surf_network_resource->common_public->states.ready_action_set =
471 xbt_swag_new(xbt_swag_offset(action, state_hookup));
472 surf_network_resource->common_public->states.running_action_set =
473 xbt_swag_new(xbt_swag_offset(action, state_hookup));
474 surf_network_resource->common_public->states.failed_action_set =
475 xbt_swag_new(xbt_swag_offset(action, state_hookup));
476 surf_network_resource->common_public->states.done_action_set =
477 xbt_swag_new(xbt_swag_offset(action, state_hookup));
479 surf_network_resource->common_public->name_service = name_service;
480 surf_network_resource->common_public->get_resource_name =
482 surf_network_resource->common_public->action_get_state =
483 surf_action_get_state;
484 surf_network_resource->common_public->action_use = action_use;
485 surf_network_resource->common_public->action_free = action_free;
486 surf_network_resource->common_public->action_cancel = action_cancel;
487 surf_network_resource->common_public->action_recycle = action_recycle;
488 surf_network_resource->common_public->action_change_state =
490 surf_network_resource->common_public->action_set_data = surf_action_set_data;
491 surf_network_resource->common_public->name = "network";
493 surf_network_resource->common_private->resource_used = resource_used;
494 surf_network_resource->common_private->share_resources = share_resources;
495 surf_network_resource->common_private->update_actions_state =
496 update_actions_state;
497 surf_network_resource->common_private->update_resource_state =
498 update_resource_state;
499 surf_network_resource->common_private->finalize = finalize;
501 surf_network_resource->common_public->suspend = action_suspend;
502 surf_network_resource->common_public->resume = action_resume;
503 surf_network_resource->common_public->is_suspended = action_is_suspended;
505 surf_network_resource->extension_public->communicate = communicate;
507 network_link_set = xbt_dict_new();
508 network_card_set = xbt_dict_new();
510 /* HC: I am assuming that this stays in for simulation of compute tasks */
511 xbt_assert0(maxmin_system, "surf_init has to be called first!");
513 /* KF: Added the initialization for GTNetS interface */
514 if (GTNetS_initialize()) {
515 xbt_assert0(0, "impossible to initialize GTNetS interface");
519 /* HC: I put this prototype here for now but it will have to go in
520 src/include/surf.h when it is functionnal. */
521 void surf_network_resource_init_GTNETS(const char *filename);
523 void surf_network_resource_init_GTNETS(const char *filename)
525 if (surf_network_resource)
527 surf_network_resource_init_internal();
528 parse_file(filename);
529 xbt_dynar_push(resource_list, &surf_network_resource);