3 /* Copyright (c) 2004 Arnaud Legrand. 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_private.h"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
12 "Logging specific to the SURF network module");
14 surf_network_resource_t surf_network_resource = NULL;
16 static xbt_dict_t network_link_set = NULL;
17 xbt_dict_t network_card_set = NULL;
20 network_link_CM02_t **routing_table = NULL;
21 int *routing_table_size = NULL;
22 static network_link_CM02_t loopback = NULL;
24 static void create_routing_table(void)
26 routing_table = xbt_new0(network_link_CM02_t *, card_number * card_number);
27 routing_table_size = xbt_new0(int, card_number * card_number);
30 static void network_link_free(void *nw_link)
32 free(((network_link_CM02_t)nw_link)->name);
36 static network_link_CM02_t network_link_new(char *name,
38 tmgr_trace_t bw_trace,
40 tmgr_trace_t lat_trace,
41 e_surf_network_link_state_t
43 tmgr_trace_t state_trace,
44 e_surf_network_link_sharing_policy_t policy)
46 network_link_CM02_t nw_link = xbt_new0(s_network_link_CM02_t, 1);
49 nw_link->resource = (surf_resource_t) surf_network_resource;
51 nw_link->bw_current = bw_initial;
54 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
55 nw_link->lat_current = lat_initial;
58 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
59 nw_link->state_current = state_initial;
61 nw_link->state_event =
62 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
65 lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
67 if(policy == SURF_NETWORK_LINK_FATPIPE)
68 lmm_constraint_shared(nw_link->constraint);
70 xbt_dict_set(network_link_set, name, nw_link, network_link_free);
75 static void network_card_free(void *nw_card)
77 free(((network_card_CM02_t)nw_card)->name);
81 static int network_card_new(const char *card_name)
83 network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, card_name);
86 card = xbt_new0(s_network_card_CM02_t, 1);
87 card->name = xbt_strdup(card_name);
88 card->id = card_number++;
89 xbt_dict_set(network_card_set, card_name, card, network_card_free);
94 static void route_new(int src_id, int dst_id, char **links, int nb_link)
96 network_link_CM02_t *link_list = NULL;
99 ROUTE_SIZE(src_id, dst_id) = nb_link;
100 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_CM02_t, nb_link));
101 for (i = 0; i < nb_link; i++) {
102 link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
103 xbt_assert1(link_list[i],"Invalid link name \"%s\"",links[i]);
109 static void parse_network_link(void)
113 tmgr_trace_t bw_trace;
115 tmgr_trace_t lat_trace;
116 e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
117 e_surf_network_link_sharing_policy_t policy_initial = SURF_NETWORK_LINK_SHARED;
118 tmgr_trace_t state_trace;
120 name = xbt_strdup(A_surfxml_network_link_name);
121 surf_parse_get_double(&bw_initial,A_surfxml_network_link_bandwidth);
122 surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
123 surf_parse_get_double(&lat_initial,A_surfxml_network_link_latency);
124 surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
126 xbt_assert0((A_surfxml_network_link_state==A_surfxml_network_link_state_ON)||
127 (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF),
129 if (A_surfxml_network_link_state==A_surfxml_network_link_state_ON)
130 state_initial = SURF_NETWORK_LINK_ON;
131 else if (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF)
132 state_initial = SURF_NETWORK_LINK_OFF;
134 if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_SHARED)
135 policy_initial = SURF_NETWORK_LINK_SHARED;
136 else if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_FATPIPE)
137 policy_initial = SURF_NETWORK_LINK_FATPIPE;
139 surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
141 network_link_new(name, bw_initial, bw_trace,
142 lat_initial, lat_trace, state_initial, state_trace,
146 static int nb_link = 0;
147 static char **link_name = NULL;
148 static int src_id = -1;
149 static int dst_id = -1;
151 static void parse_route_set_endpoints(void)
153 src_id = network_card_new(A_surfxml_route_src);
154 dst_id = network_card_new(A_surfxml_route_dst);
159 static void parse_route_elem(void)
162 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
163 link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
166 static void parse_route_set_route(void)
168 route_new(src_id, dst_id, link_name, nb_link);
171 static void parse_file(const char *file)
175 /* Figuring out the network links */
176 surf_parse_reset_parser();
177 ETag_surfxml_network_link_fun=parse_network_link;
178 surf_parse_open(file);
179 xbt_assert1((!surf_parse()),"Parse error in %s",file);
182 /* Figuring out the network cards used */
183 surf_parse_reset_parser();
184 STag_surfxml_route_fun=parse_route_set_endpoints;
185 surf_parse_open(file);
186 xbt_assert1((!surf_parse()),"Parse error in %s",file);
189 create_routing_table();
191 /* Building the routes */
192 surf_parse_reset_parser();
193 STag_surfxml_route_fun=parse_route_set_endpoints;
194 ETag_surfxml_route_element_fun=parse_route_elem;
195 ETag_surfxml_route_fun=parse_route_set_route;
196 surf_parse_open(file);
197 xbt_assert1((!surf_parse()),"Parse error in %s",file);
200 /* Adding loopback if needed */
202 for (i = 0; i < card_number; i++)
203 if(!ROUTE_SIZE(i,i)) {
205 loopback = network_link_new(xbt_strdup("__MSG_loopback__"),
206 498.00, NULL, 0.000015, NULL,
207 SURF_NETWORK_LINK_ON, NULL,
208 SURF_NETWORK_LINK_FATPIPE);
210 ROUTE(i,i) = xbt_new0(network_link_CM02_t, 1);
211 ROUTE(i,i)[0] = loopback;
215 static void *name_service(const char *name)
217 network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
221 static const char *get_resource_name(void *resource_id)
223 return ((network_card_CM02_t) resource_id)->name;
226 static int resource_used(void *resource_id)
228 return lmm_constraint_used(maxmin_system,
229 ((network_link_CM02_t) resource_id)->constraint);
232 static int action_free(surf_action_t action)
236 xbt_swag_remove(action, action->state_set);
237 if(((surf_action_network_CM02_t)action)->variable)
238 lmm_variable_free(maxmin_system, ((surf_action_network_CM02_t)action)->variable);
245 static void action_use(surf_action_t action)
250 static void action_cancel(surf_action_t action)
255 static void action_recycle(surf_action_t action)
260 static void action_change_state(surf_action_t action,
261 e_surf_action_state_t state)
263 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
264 /* if(((surf_action_network_CM02_t)action)->variable) { */
265 /* lmm_variable_disable(maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
266 /* ((surf_action_network_CM02_t)action)->variable = NULL; */
269 surf_action_change_state(action, state);
273 static double share_resources(double now)
275 s_surf_action_network_CM02_t s_action;
276 surf_action_network_CM02_t action = NULL;
277 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
278 double min = generic_maxmin_share_resources(running_actions,
279 xbt_swag_offset(s_action, variable));
281 xbt_swag_foreach(action, running_actions) {
282 if(action->latency>0) {
283 if(min<0) min = action->latency;
284 else if (action->latency<min) min = action->latency;
291 static void update_actions_state(double now, double delta)
294 surf_action_network_CM02_t action = NULL;
295 surf_action_network_CM02_t next_action = NULL;
296 xbt_swag_t running_actions =
297 surf_network_resource->common_public->states.running_action_set;
299 xbt_swag_t failed_actions =
300 surf_network_resource->common_public->states.failed_action_set;
303 xbt_swag_foreach_safe(action, next_action, running_actions) {
305 if (action->latency > 0) {
306 if (action->latency > deltap) {
307 surf_double_update(&(action->latency),deltap);
310 surf_double_update(&(deltap), action->latency);
311 action->latency = 0.0;
313 if ((action->latency == 0.0) && !(action->suspended))
314 lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
316 surf_double_update(&(action->generic_action.remains),
317 lmm_variable_getvalue(action->variable) * deltap);
318 if (action->generic_action.max_duration != NO_MAX_DURATION)
319 surf_double_update(&(action->generic_action.max_duration), delta);
321 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
323 if ((action->generic_action.remains <= 0) &&
324 (lmm_get_variable_weight(action->variable)>0)) {
325 action->generic_action.finish = surf_get_clock();
326 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
327 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
328 (action->generic_action.max_duration <= 0)) {
329 action->generic_action.finish = surf_get_clock();
330 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
331 } else { /* Need to check that none of the resource has failed */
332 lmm_constraint_t cnst = NULL;
334 network_link_CM02_t nw_link = NULL;
337 lmm_get_cnst_from_var(maxmin_system, action->variable,
339 nw_link = lmm_constraint_id(cnst);
340 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
341 action->generic_action.finish = surf_get_clock();
342 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
352 static void update_resource_state(void *id,
353 tmgr_trace_event_t event_type,
356 network_link_CM02_t nw_link = id;
357 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
358 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
359 /* value, event_type); */
361 if (event_type == nw_link->bw_event) {
362 nw_link->bw_current = value;
363 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
364 nw_link->bw_current);
365 } else if (event_type == nw_link->lat_event) {
366 double delta = value - nw_link->lat_current;
367 lmm_variable_t var = NULL;
368 surf_action_network_CM02_t action = NULL;
370 nw_link->lat_current = value;
371 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
372 action = lmm_variable_id(var);
373 action->lat_current += delta;
375 lmm_update_variable_bound(maxmin_system, action->variable,
376 SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
378 lmm_update_variable_bound(maxmin_system, action->variable,
379 min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
381 } else if (event_type == nw_link->state_event) {
383 nw_link->state_current = SURF_NETWORK_LINK_ON;
385 nw_link->state_current = SURF_NETWORK_LINK_OFF;
387 CRITICAL0("Unknown event ! \n");
394 static surf_action_t communicate(void *src, void *dst, double size, double rate)
396 surf_action_network_CM02_t action = NULL;
397 network_card_CM02_t card_src = src;
398 network_card_CM02_t card_dst = dst;
399 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
400 network_link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
403 XBT_IN4("(%s,%s,%g,%g)",card_src->name,card_dst->name,size,rate);
404 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);
406 action = xbt_new0(s_surf_action_network_CM02_t, 1);
408 action->generic_action.using = 1;
409 action->generic_action.cost = size;
410 action->generic_action.remains = size;
411 action->generic_action.max_duration = NO_MAX_DURATION;
412 action->generic_action.start = -1.0;
413 action->generic_action.finish = -1.0;
414 action->generic_action.resource_type =
415 (surf_resource_t) surf_network_resource;
416 action->suspended = 0; /* Should be useless because of the
417 calloc but it seems to help valgrind... */
418 action->generic_action.state_set =
419 surf_network_resource->common_public->states.running_action_set;
421 xbt_swag_insert(action, action->generic_action.state_set);
424 action->latency = 0.0;
425 for (i = 0; i < route_size; i++)
426 action->latency += route[i]->lat_current;
427 action->lat_current = action->latency;
429 if(action->latency>0)
430 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
433 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
437 if(action->lat_current>0)
438 lmm_update_variable_bound(maxmin_system, action->variable,
439 SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
441 lmm_update_variable_bound(maxmin_system, action->variable, -1.0);
443 if(action->lat_current>0)
444 lmm_update_variable_bound(maxmin_system, action->variable,
445 min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
447 lmm_update_variable_bound(maxmin_system, action->variable, action->rate);
450 for (i = 0; i < route_size; i++)
451 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
454 return (surf_action_t) action;
457 static void action_suspend(surf_action_t action)
459 ((surf_action_network_CM02_t) action)->suspended = 1;
460 lmm_update_variable_weight(maxmin_system,
461 ((surf_action_network_CM02_t) action)->variable, 0.0);
464 static void action_resume(surf_action_t action)
466 lmm_update_variable_weight(maxmin_system,
467 ((surf_action_network_CM02_t) action)->variable, 1.0);
468 ((surf_action_network_CM02_t) action)->suspended = 0;
471 static int action_is_suspended(surf_action_t action)
473 return ((surf_action_network_CM02_t) action)->suspended;
476 static void action_set_max_duration(surf_action_t action, double duration)
478 action->max_duration = duration;
481 static void finalize(void)
485 xbt_dict_free(&network_card_set);
486 xbt_dict_free(&network_link_set);
487 xbt_swag_free(surf_network_resource->common_public->states.
489 xbt_swag_free(surf_network_resource->common_public->states.
491 xbt_swag_free(surf_network_resource->common_public->states.
493 xbt_swag_free(surf_network_resource->common_public->states.
495 free(surf_network_resource->common_public);
496 free(surf_network_resource->common_private);
497 free(surf_network_resource->extension_public);
499 free(surf_network_resource);
500 surf_network_resource = NULL;
503 for (i = 0; i < card_number; i++)
504 for (j = 0; j < card_number; j++)
507 routing_table = NULL;
508 free(routing_table_size);
509 routing_table_size = NULL;
513 static void surf_network_resource_init_internal(void)
515 s_surf_action_t action;
517 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
519 surf_network_resource->common_private =
520 xbt_new0(s_surf_resource_private_t, 1);
521 surf_network_resource->common_public =
522 xbt_new0(s_surf_resource_public_t, 1);
523 surf_network_resource->extension_public =
524 xbt_new0(s_surf_network_resource_extension_public_t, 1);
526 surf_network_resource->common_public->states.ready_action_set =
527 xbt_swag_new(xbt_swag_offset(action, state_hookup));
528 surf_network_resource->common_public->states.running_action_set =
529 xbt_swag_new(xbt_swag_offset(action, state_hookup));
530 surf_network_resource->common_public->states.failed_action_set =
531 xbt_swag_new(xbt_swag_offset(action, state_hookup));
532 surf_network_resource->common_public->states.done_action_set =
533 xbt_swag_new(xbt_swag_offset(action, state_hookup));
535 surf_network_resource->common_public->name_service = name_service;
536 surf_network_resource->common_public->get_resource_name =
538 surf_network_resource->common_public->action_get_state =
539 surf_action_get_state;
540 surf_network_resource->common_public->action_free = action_free;
541 surf_network_resource->common_public->action_use = action_use;
542 surf_network_resource->common_public->action_cancel = action_cancel;
543 surf_network_resource->common_public->action_recycle = action_recycle;
544 surf_network_resource->common_public->action_change_state =
546 surf_network_resource->common_public->action_set_data = surf_action_set_data;
547 surf_network_resource->common_public->name = "network";
549 surf_network_resource->common_private->resource_used = resource_used;
550 surf_network_resource->common_private->share_resources = share_resources;
551 surf_network_resource->common_private->update_actions_state =
552 update_actions_state;
553 surf_network_resource->common_private->update_resource_state =
554 update_resource_state;
555 surf_network_resource->common_private->finalize = finalize;
557 surf_network_resource->common_public->suspend = action_suspend;
558 surf_network_resource->common_public->resume = action_resume;
559 surf_network_resource->common_public->is_suspended = action_is_suspended;
560 surf_cpu_resource->common_public->set_max_duration = action_set_max_duration;
562 surf_network_resource->extension_public->communicate = communicate;
564 network_link_set = xbt_dict_new();
565 network_card_set = xbt_dict_new();
567 xbt_assert0(maxmin_system, "surf_init has to be called first!");
570 /***************************************************************************/
571 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
572 /***************************************************************************/
573 /* @TechReport{ rr-lip2002-40, */
574 /* author = {Henri Casanova and Loris Marchal}, */
575 /* institution = {LIP}, */
576 /* title = {A Network Model for Simulation of Grid Application}, */
577 /* number = {2002-40}, */
581 void surf_network_resource_init_CM02(const char *filename)
583 if (surf_network_resource)
585 surf_network_resource_init_internal();
586 parse_file(filename);
587 xbt_dynar_push(resource_list, &surf_network_resource);