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_dassf_private.h"
10 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
12 /* surf_network_resource_t surf_network_resource = NULL; */
13 /*xbt_dict_t network_link_set = NULL;*/
14 /* xbt_dict_t network_card_set = NULL; */
16 static int card_number = 0;
17 static network_link_DASSF_t **routing_table = NULL;
18 static int *routing_table_size = NULL;
20 #define ROUTE(i,j) routing_table[(i)+(j)*card_number]
21 #define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
23 static void create_routing_table(void)
25 routing_table = xbt_new0(network_link_DASSF_t *, card_number * card_number);
26 routing_table_size = xbt_new0(int, card_number * card_number);
29 static void network_link_free(void *nw_link)
31 free(((network_link_DASSF_t)nw_link)->name);
35 static network_link_DASSF_t network_link_new(char *name,
37 tmgr_trace_t bw_trace,
39 tmgr_trace_t lat_trace,
40 e_surf_network_link_state_t
42 tmgr_trace_t state_trace)
44 network_link_DASSF_t nw_link = xbt_new0(s_network_link_DASSF_t, 1);
47 nw_link->resource = (surf_resource_t) surf_network_resource;
49 nw_link->bw_current = bw_initial;
52 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
53 nw_link->lat_current = lat_initial;
56 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
57 nw_link->state_current = state_initial;
59 nw_link->state_event =
60 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
63 lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
65 xbt_dict_set(network_link_set, name, nw_link, network_link_free);
70 static void network_card_free(void *nw_card)
72 free(((network_card_DASSF_t)nw_card)->name);
76 static int network_card_new(const char *card_name)
78 network_card_DASSF_t card = xbt_dict_get_or_null(network_card_set, card_name);
81 card = xbt_new0(s_network_card_DASSF_t, 1);
82 card->name = xbt_strdup(card_name);
83 card->id = card_number++;
84 xbt_dict_set(network_card_set, card_name, card, network_card_free);
89 static void route_new(int src_id, int dst_id, network_link_DASSF_t *link_list, int nb_link)
91 ROUTE_SIZE(src_id, dst_id) = nb_link;
92 ROUTE(src_id, dst_id) = link_list = xbt_realloc(link_list, sizeof(network_link_DASSF_t) * nb_link);
95 static void parse_network_link(void)
99 tmgr_trace_t bw_trace;
101 tmgr_trace_t lat_trace;
102 e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
103 tmgr_trace_t state_trace;
105 name = xbt_strdup(A_surfxml_network_link_name);
106 surf_parse_get_double(&bw_initial,A_surfxml_network_link_bandwidth);
107 surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
108 surf_parse_get_double(&lat_initial,A_surfxml_network_link_latency);
109 surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
111 xbt_assert0((A_surfxml_network_link_state==A_surfxml_network_link_state_ON)||
112 (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF),
114 if (A_surfxml_network_link_state==A_surfxml_network_link_state_ON)
115 state_initial = SURF_NETWORK_LINK_ON;
116 if (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF)
117 state_initial = SURF_NETWORK_LINK_OFF;
118 surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
120 network_link_new(name, bw_initial, bw_trace,
121 lat_initial, lat_trace, state_initial, state_trace);
125 static int link_list_capacity;
126 static network_link_DASSF_t *link_list = NULL;
127 static int src_id = -1;
128 static int dst_id = -1;
130 static void parse_route_set_endpoints(void)
132 src_id = network_card_new(A_surfxml_route_src);
133 dst_id = network_card_new(A_surfxml_route_dst);
135 link_list_capacity = 20;
136 link_list = xbt_new(network_link_DASSF_t, link_list_capacity);
139 static void parse_route_elem(void)
141 if (nb_link == link_list_capacity) {
142 link_list_capacity *= 2;
143 link_list = xbt_realloc(link_list, link_list_capacity * sizeof(network_link_DASSF_t));
145 link_list[nb_link++] = xbt_dict_get_or_null(network_link_set, A_surfxml_route_element_name);
148 static void parse_route_set_route(void)
150 route_new(src_id, dst_id, link_list, nb_link);
153 static void parse_file(const char *file)
155 /* Figuring out the network links */
156 surf_parse_reset_parser();
157 ETag_surfxml_network_link_fun=parse_network_link;
158 surf_parse_open(file);
159 xbt_assert1((!surf_parse()),"Parse error in %s",file);
162 /* Figuring out the network cards used */
163 surf_parse_reset_parser();
164 STag_surfxml_route_fun=parse_route_set_endpoints;
165 surf_parse_open(file);
166 xbt_assert1((!surf_parse()),"Parse error in %s",file);
169 create_routing_table();
171 /* Building the routes */
172 surf_parse_reset_parser();
173 STag_surfxml_route_fun=parse_route_set_endpoints;
174 ETag_surfxml_route_element_fun=parse_route_elem;
175 ETag_surfxml_route_fun=parse_route_set_route;
176 surf_parse_open(file);
177 xbt_assert1((!surf_parse()),"Parse error in %s",file);
181 static void *name_service(const char *name)
183 return xbt_dict_get_or_null(network_card_set, name);
186 static const char *get_resource_name(void *resource_id)
188 return ((network_card_DASSF_t) resource_id)->name;
191 static int resource_used(void *resource_id)
193 return lmm_constraint_used(maxmin_system,
194 ((network_link_DASSF_t) resource_id)->constraint);
197 static int action_free(surf_action_t action)
201 xbt_swag_remove(action, action->state_set);
202 if(((surf_action_network_DASSF_t)action)->variable)
203 lmm_variable_free(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
209 static void action_cancel(surf_action_t action)
214 static void action_recycle(surf_action_t action)
219 static void action_change_state(surf_action_t action,
220 e_surf_action_state_t state)
222 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
223 /* if(((surf_action_network_DASSF_t)action)->variable) { */
224 /* lmm_variable_disable(maxmin_system, ((surf_action_network_DASSF_t)action)->variable); */
225 /* ((surf_action_network_DASSF_t)action)->variable = NULL; */
228 surf_action_change_state(action, state);
232 /* I nothing more happens, return the date at which the first action that will terminate does terminate */
233 /* This returns the time for the first NETWORK action to complete */
234 /* It would be nice to store this minimum somewhere so that the next function can
235 figure out whether the min comes from the network or from something else */
236 static double share_resources(double now)
238 s_surf_action_network_DASSF_t s_action;
239 surf_action_network_DASSF_t action = NULL;
240 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
241 double min = generic_maxmin_share_resources(running_actions,
242 xbt_swag_offset(s_action, variable));
244 xbt_swag_foreach(action, running_actions) {
245 if(action->latency>0) {
246 if(min<0) min = action->latency;
247 else if (action->latency<min) min = action->latency;
254 /* delta: by how many time units the simulation must advance */
255 /* In this function: change the state of actions that terminate */
256 /* The delta may not come from the network, and thus may be different (smaller)
257 than the one returned by the function above */
258 /* If the delta is a network-caused min, then do not emulate any timer in the
259 network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
261 static void update_actions_state(double now, double delta)
264 surf_action_network_DASSF_t action = NULL;
265 surf_action_network_DASSF_t next_action = NULL;
266 xbt_swag_t running_actions =
267 surf_network_resource->common_public->states.running_action_set;
269 xbt_swag_t failed_actions =
270 surf_network_resource->common_public->states.failed_action_set;
273 xbt_swag_foreach_safe(action, next_action, running_actions) {
275 if (action->latency > 0) {
276 if (action->latency > deltap) {
277 double_update(&(action->latency),deltap);
280 double_update(&(deltap), action->latency);
281 action->latency = 0.0;
283 if ((action->latency == 0.0) && !(action->suspended))
284 lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
286 double_update(&(action->generic_action.remains),
287 lmm_variable_getvalue(action->variable) * deltap);
288 if (action->generic_action.max_duration != NO_MAX_DURATION)
289 double_update(&(action->generic_action.max_duration), delta);
291 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
293 if (action->generic_action.remains <= 0) {
294 action->generic_action.finish = surf_get_clock();
295 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
296 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
297 (action->generic_action.max_duration <= 0)) {
298 action->generic_action.finish = surf_get_clock();
299 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
300 } else { /* Need to check that none of the resource has failed */
301 /* to ignore for now */
302 lmm_constraint_t cnst = NULL;
304 network_link_DASSF_t nw_link = NULL;
307 lmm_get_cnst_from_var(maxmin_system, action->variable,
309 nw_link = lmm_constraint_id(cnst);
310 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
311 action->generic_action.finish = surf_get_clock();
312 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
322 /* Called only when there is a change in trace: Useless in packet-level simulation */
323 static void update_resource_state(void *id,
324 tmgr_trace_event_t event_type,
327 network_link_DASSF_t nw_link = id;
328 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
329 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
330 /* value, event_type); */
332 if (event_type == nw_link->bw_event) {
333 nw_link->bw_current = value;
334 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
335 nw_link->bw_current);
336 } else if (event_type == nw_link->lat_event) {
337 double delta = value - nw_link->lat_current;
338 lmm_variable_t var = NULL;
339 surf_action_network_DASSF_t action = NULL;
341 nw_link->lat_current = value;
342 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
343 action = lmm_variable_id(var);
344 action->lat_current += delta;
346 lmm_update_variable_bound(maxmin_system, action->variable,
347 SG_TCP_CTE_GAMMA / action->lat_current);
349 lmm_update_variable_bound(maxmin_system, action->variable,
350 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
352 } else if (event_type == nw_link->state_event) {
354 nw_link->state_current = SURF_NETWORK_LINK_ON;
356 nw_link->state_current = SURF_NETWORK_LINK_OFF;
358 CRITICAL0("Unknown event ! \n");
365 static surf_action_t communicate(void *src, void *dst, double size, double rate)
367 surf_action_network_DASSF_t action = NULL;
368 network_card_DASSF_t card_src = src;
369 network_card_DASSF_t card_dst = dst;
370 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
371 network_link_DASSF_t *route = ROUTE(card_src->id, card_dst->id);
374 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);
376 action = xbt_new0(s_surf_action_network_DASSF_t, 1);
378 action->generic_action.using = 1;
379 action->generic_action.cost = size;
380 action->generic_action.remains = size;
381 action->generic_action.max_duration = NO_MAX_DURATION;
382 action->generic_action.start = -1.0;
383 action->generic_action.finish = -1.0;
384 action->generic_action.resource_type =
385 (surf_resource_t) surf_network_resource;
387 action->generic_action.state_set =
388 surf_network_resource->common_public->states.running_action_set;
390 xbt_swag_insert(action, action->generic_action.state_set);
393 action->latency = 0.0;
394 for (i = 0; i < route_size; i++)
395 action->latency += route[i]->lat_current;
396 action->lat_current = action->latency;
398 if(action->latency>0)
399 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
402 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
406 lmm_update_variable_bound(maxmin_system, action->variable,
407 SG_TCP_CTE_GAMMA / action->lat_current);
409 lmm_update_variable_bound(maxmin_system, action->variable,
410 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
412 if(route_size == 0) {
413 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
416 for (i = 0; i < route_size; i++)
417 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
419 return (surf_action_t) action;
422 /* returns a NULL-terminated array of network_link_DASSF_t */
423 static const void** get_route(void *src, void *dst) {
424 network_card_DASSF_t card_src = src;
425 network_card_DASSF_t card_dst = dst;
426 return (const void**) ROUTE(card_src->id, card_dst->id);
429 static int get_route_size(void *src, void *dst) {
430 network_card_DASSF_t card_src = src;
431 network_card_DASSF_t card_dst = dst;
432 return ROUTE_SIZE(card_src->id, card_dst->id);
435 static const char *get_link_name(const void *link) {
436 return ((network_link_DASSF_t) link)->name;
439 static double get_link_bandwidth(const void *link) {
440 return ((network_link_DASSF_t) link)->bw_current;
443 static double get_link_latency(const void *link) {
444 return ((network_link_DASSF_t) link)->lat_current;
447 static void action_suspend(surf_action_t action)
449 ((surf_action_network_DASSF_t) action)->suspended = 1;
450 lmm_update_variable_weight(maxmin_system,
451 ((surf_action_network_DASSF_t) action)->variable, 0.0);
454 static void action_resume(surf_action_t action)
456 lmm_update_variable_weight(maxmin_system,
457 ((surf_action_network_DASSF_t) action)->variable, 1.0);
458 ((surf_action_network_DASSF_t) action)->suspended = 0;
461 static int action_is_suspended(surf_action_t action)
463 return ((surf_action_network_DASSF_t) action)->suspended;
466 static void finalize(void)
470 xbt_dict_free(&network_card_set);
471 xbt_dict_free(&network_link_set);
472 xbt_swag_free(surf_network_resource->common_public->states.
474 xbt_swag_free(surf_network_resource->common_public->states.
476 xbt_swag_free(surf_network_resource->common_public->states.
478 xbt_swag_free(surf_network_resource->common_public->states.
480 free(surf_network_resource->common_public);
481 free(surf_network_resource->common_private);
482 free(surf_network_resource->extension_public);
484 free(surf_network_resource);
485 surf_network_resource = NULL;
487 for (i = 0; i < card_number; i++)
488 for (j = 0; j < card_number; j++)
491 routing_table = NULL;
492 free(routing_table_size);
493 routing_table_size = NULL;
497 static void surf_network_resource_init_internal(void)
499 s_surf_action_t action;
501 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
503 surf_network_resource->common_private =
504 xbt_new0(s_surf_resource_private_t, 1);
505 surf_network_resource->common_public =
506 xbt_new0(s_surf_resource_public_t, 1);
507 surf_network_resource->extension_public =
508 xbt_new0(s_surf_network_resource_extension_public_t, 1);
510 surf_network_resource->common_public->states.ready_action_set =
511 xbt_swag_new(xbt_swag_offset(action, state_hookup));
512 surf_network_resource->common_public->states.running_action_set =
513 xbt_swag_new(xbt_swag_offset(action, state_hookup));
514 surf_network_resource->common_public->states.failed_action_set =
515 xbt_swag_new(xbt_swag_offset(action, state_hookup));
516 surf_network_resource->common_public->states.done_action_set =
517 xbt_swag_new(xbt_swag_offset(action, state_hookup));
519 surf_network_resource->common_public->name_service = name_service;
520 surf_network_resource->common_public->get_resource_name =
522 surf_network_resource->common_public->action_get_state =
523 surf_action_get_state;
524 surf_network_resource->common_public->action_get_start_time =
525 surf_action_get_start_time;
526 surf_network_resource->common_public->action_get_finish_time =
527 surf_action_get_finish_time;
528 surf_network_resource->common_public->action_free = action_free;
529 surf_network_resource->common_public->action_cancel = action_cancel;
530 surf_network_resource->common_public->action_recycle = action_recycle;
531 surf_network_resource->common_public->action_change_state =
533 surf_network_resource->common_public->action_set_data = surf_action_set_data;
534 surf_network_resource->common_public->name = "network";
536 surf_network_resource->common_private->resource_used = resource_used;
537 surf_network_resource->common_private->share_resources = share_resources;
538 surf_network_resource->common_private->update_actions_state =
539 update_actions_state;
540 surf_network_resource->common_private->update_resource_state =
541 update_resource_state;
542 surf_network_resource->common_private->finalize = finalize;
544 surf_network_resource->common_public->suspend = action_suspend;
545 surf_network_resource->common_public->resume = action_resume;
546 surf_network_resource->common_public->is_suspended = action_is_suspended;
548 surf_network_resource->extension_public->communicate = communicate;
549 surf_network_resource->extension_public->get_route = get_route;
550 surf_network_resource->extension_public->get_route_size = get_route_size;
551 surf_network_resource->extension_public->get_link_name = get_link_name;
552 surf_network_resource->extension_public->get_link_bandwidth = get_link_bandwidth;
553 surf_network_resource->extension_public->get_link_latency = get_link_latency;
555 network_link_set = xbt_dict_new();
556 network_card_set = xbt_dict_new();
558 xbt_assert0(maxmin_system, "surf_init has to be called first!");
561 /***************************************************************************/
562 /* The nice Hack by Henri to use DASSF from within SURF ! */
563 /***************************************************************************/
564 /* I put this prototype here for now but it will have to go in
565 src/include/surf.h when it will be functionnal. */
566 void surf_network_resource_init_DASSF(const char *filename);
568 void surf_network_resource_init_DASSF(const char *filename)
570 if (surf_network_resource)
572 surf_network_resource_init_internal();
573 parse_file(filename);
574 xbt_dynar_push(resource_list, &surf_network_resource);