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(surf_network, surf,
12 "Logging specific to the SURF network module");
14 surf_network_resource_t surf_network_resource = NULL;
16 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, network_link_CM02_t *link_list, int nb_link)
96 ROUTE_SIZE(src_id, dst_id) = nb_link;
97 ROUTE(src_id, dst_id) = link_list = xbt_realloc(link_list, sizeof(network_link_CM02_t) * nb_link);
100 static void parse_network_link(void)
104 tmgr_trace_t bw_trace;
106 tmgr_trace_t lat_trace;
107 e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
108 e_surf_network_link_sharing_policy_t policy_initial = SURF_NETWORK_LINK_SHARED;
109 tmgr_trace_t state_trace;
111 name = xbt_strdup(A_surfxml_network_link_name);
112 surf_parse_get_double(&bw_initial,A_surfxml_network_link_bandwidth);
113 surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
114 surf_parse_get_double(&lat_initial,A_surfxml_network_link_latency);
115 surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
117 xbt_assert0((A_surfxml_network_link_state==A_surfxml_network_link_state_ON)||
118 (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF),
120 if (A_surfxml_network_link_state==A_surfxml_network_link_state_ON)
121 state_initial = SURF_NETWORK_LINK_ON;
122 else if (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF)
123 state_initial = SURF_NETWORK_LINK_OFF;
125 if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_SHARED)
126 policy_initial = SURF_NETWORK_LINK_SHARED;
127 else if (A_surfxml_network_link_sharing_policy==A_surfxml_network_link_sharing_policy_FATPIPE)
128 policy_initial = SURF_NETWORK_LINK_FATPIPE;
130 surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
132 network_link_new(name, bw_initial, bw_trace,
133 lat_initial, lat_trace, state_initial, state_trace,
138 static int link_list_capacity;
139 static network_link_CM02_t *link_list = NULL;
140 static int src_id = -1;
141 static int dst_id = -1;
143 static void parse_route_set_endpoints(void)
145 src_id = network_card_new(A_surfxml_route_src);
146 dst_id = network_card_new(A_surfxml_route_dst);
148 link_list_capacity = 20;
149 link_list = xbt_new(network_link_CM02_t, link_list_capacity);
152 static void parse_route_elem(void)
154 if (nb_link == link_list_capacity) {
155 link_list_capacity *= 2;
156 link_list = xbt_realloc(link_list, (link_list_capacity) * sizeof(network_link_CM02_t));
158 link_list[nb_link++] = xbt_dict_get_or_null(network_link_set, A_surfxml_route_element_name);
161 static void parse_route_set_route(void)
163 route_new(src_id, dst_id, link_list, nb_link);
166 static void parse_file(const char *file)
170 /* Figuring out the network links */
171 surf_parse_reset_parser();
172 ETag_surfxml_network_link_fun=parse_network_link;
173 surf_parse_open(file);
174 xbt_assert1((!surf_parse()),"Parse error in %s",file);
177 /* Figuring out the network cards used */
178 surf_parse_reset_parser();
179 STag_surfxml_route_fun=parse_route_set_endpoints;
180 surf_parse_open(file);
181 xbt_assert1((!surf_parse()),"Parse error in %s",file);
184 create_routing_table();
186 /* Building the routes */
187 surf_parse_reset_parser();
188 STag_surfxml_route_fun=parse_route_set_endpoints;
189 ETag_surfxml_route_element_fun=parse_route_elem;
190 ETag_surfxml_route_fun=parse_route_set_route;
191 surf_parse_open(file);
192 xbt_assert1((!surf_parse()),"Parse error in %s",file);
195 /* Adding loopback if needed */
197 for (i = 0; i < card_number; i++)
198 if(!ROUTE_SIZE(i,i)) {
200 loopback = network_link_new(xbt_strdup("__MSG_loopback__"),
201 498000000, NULL, 0.000015, NULL,
202 SURF_NETWORK_LINK_ON, NULL,
203 SURF_NETWORK_LINK_FATPIPE);
205 ROUTE(i,i) = xbt_new0(network_link_CM02_t, 1);
206 ROUTE(i,i)[0] = loopback;
210 static void *name_service(const char *name)
212 network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
216 static const char *get_resource_name(void *resource_id)
218 return ((network_card_CM02_t) resource_id)->name;
221 static int resource_used(void *resource_id)
223 return lmm_constraint_used(maxmin_system,
224 ((network_link_CM02_t) resource_id)->constraint);
227 static int action_free(surf_action_t action)
231 xbt_swag_remove(action, action->state_set);
232 if(((surf_action_network_CM02_t)action)->variable)
233 lmm_variable_free(maxmin_system, ((surf_action_network_CM02_t)action)->variable);
240 static void action_use(surf_action_t action)
245 static void action_cancel(surf_action_t action)
250 static void action_recycle(surf_action_t action)
255 static void action_change_state(surf_action_t action,
256 e_surf_action_state_t state)
258 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
259 /* if(((surf_action_network_CM02_t)action)->variable) { */
260 /* lmm_variable_disable(maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
261 /* ((surf_action_network_CM02_t)action)->variable = NULL; */
264 surf_action_change_state(action, state);
268 static double share_resources(double now)
270 s_surf_action_network_CM02_t s_action;
271 surf_action_network_CM02_t action = NULL;
272 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
273 double min = generic_maxmin_share_resources(running_actions,
274 xbt_swag_offset(s_action, variable));
276 xbt_swag_foreach(action, running_actions) {
277 if(action->latency>0) {
278 if(min<0) min = action->latency;
279 else if (action->latency<min) min = action->latency;
286 static void update_actions_state(double now, double delta)
289 surf_action_network_CM02_t action = NULL;
290 surf_action_network_CM02_t next_action = NULL;
291 xbt_swag_t running_actions =
292 surf_network_resource->common_public->states.running_action_set;
294 xbt_swag_t failed_actions =
295 surf_network_resource->common_public->states.failed_action_set;
298 xbt_swag_foreach_safe(action, next_action, running_actions) {
300 if (action->latency > 0) {
301 if (action->latency > deltap) {
302 double_update(&(action->latency),deltap);
305 double_update(&(deltap), action->latency);
306 action->latency = 0.0;
308 if ((action->latency == 0.0) && !(action->suspended))
309 lmm_update_variable_weight(maxmin_system, action->variable,
310 action->lat_current);
312 double_update(&(action->generic_action.remains),
313 lmm_variable_getvalue(action->variable) * deltap);
314 if (action->generic_action.max_duration != NO_MAX_DURATION)
315 double_update(&(action->generic_action.max_duration), delta);
317 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
319 if ((action->generic_action.remains <= 0) &&
320 (lmm_get_variable_weight(action->variable)>0)) {
321 action->generic_action.finish = surf_get_clock();
322 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
323 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
324 (action->generic_action.max_duration <= 0)) {
325 action->generic_action.finish = surf_get_clock();
326 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
327 } else { /* Need to check that none of the resource has failed */
328 lmm_constraint_t cnst = NULL;
330 network_link_CM02_t nw_link = NULL;
333 lmm_get_cnst_from_var(maxmin_system, action->variable,
335 nw_link = lmm_constraint_id(cnst);
336 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
337 action->generic_action.finish = surf_get_clock();
338 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
348 static void update_resource_state(void *id,
349 tmgr_trace_event_t event_type,
352 network_link_CM02_t nw_link = id;
353 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
354 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
355 /* value, event_type); */
357 if (event_type == nw_link->bw_event) {
358 nw_link->bw_current = value;
359 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
360 nw_link->bw_current);
361 } else if (event_type == nw_link->lat_event) {
362 double delta = value - nw_link->lat_current;
363 lmm_variable_t var = NULL;
364 surf_action_network_CM02_t action = NULL;
366 nw_link->lat_current = value;
367 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
368 action = lmm_variable_id(var);
369 action->lat_current += delta;
371 lmm_update_variable_bound(maxmin_system, action->variable,
372 SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
374 lmm_update_variable_bound(maxmin_system, action->variable,
375 min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
376 if(!(action->suspended))
377 lmm_update_variable_weight(maxmin_system, action->variable,
378 action->lat_current);
380 } else if (event_type == nw_link->state_event) {
382 nw_link->state_current = SURF_NETWORK_LINK_ON;
384 nw_link->state_current = SURF_NETWORK_LINK_OFF;
386 CRITICAL0("Unknown event ! \n");
393 static surf_action_t communicate(void *src, void *dst, double size, double rate)
395 surf_action_network_CM02_t action = NULL;
396 network_card_CM02_t card_src = src;
397 network_card_CM02_t card_dst = dst;
398 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
399 network_link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
402 XBT_IN4("(%s,%s,%g,%g)",card_src->name,card_dst->name,size,rate);
403 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);
405 action = xbt_new0(s_surf_action_network_CM02_t, 1);
407 action->generic_action.using = 1;
408 action->generic_action.cost = size;
409 action->generic_action.remains = size;
410 action->generic_action.max_duration = NO_MAX_DURATION;
411 action->generic_action.start = surf_get_clock();
412 action->generic_action.finish = -1.0;
413 action->generic_action.resource_type =
414 (surf_resource_t) surf_network_resource;
415 action->suspended = 0; /* Should be useless because of the
416 calloc but it seems to help valgrind... */
417 action->generic_action.state_set =
418 surf_network_resource->common_public->states.running_action_set;
420 xbt_swag_insert(action, action->generic_action.state_set);
423 action->latency = 0.0;
424 for (i = 0; i < route_size; i++)
425 action->latency += route[i]->lat_current;
426 action->lat_current = action->latency;
428 if(action->latency>0)
429 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
432 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
436 if(action->lat_current>0)
437 lmm_update_variable_bound(maxmin_system, action->variable,
438 SG_TCP_CTE_GAMMA / (2.0 * action->lat_current));
440 lmm_update_variable_bound(maxmin_system, action->variable, -1.0);
442 if(action->lat_current>0)
443 lmm_update_variable_bound(maxmin_system, action->variable,
444 min(action->rate,SG_TCP_CTE_GAMMA / (2.0 * action->lat_current)));
446 lmm_update_variable_bound(maxmin_system, action->variable, action->rate);
449 for (i = 0; i < route_size; i++)
450 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
453 return (surf_action_t) action;
456 /* returns an array of network_link_CM02_t */
457 static const void** get_route(void *src, void *dst) {
458 network_card_CM02_t card_src = src;
459 network_card_CM02_t card_dst = dst;
460 return (const void**) ROUTE(card_src->id, card_dst->id);
463 static int get_route_size(void *src, void *dst) {
464 network_card_CM02_t card_src = src;
465 network_card_CM02_t card_dst = dst;
466 return ROUTE_SIZE(card_src->id, card_dst->id);
469 static const char *get_link_name(const void *link) {
470 return ((network_link_CM02_t) link)->name;
473 static double get_link_bandwidth(const void *link) {
474 return ((network_link_CM02_t) link)->bw_current;
477 static double get_link_latency(const void *link) {
478 return ((network_link_CM02_t) link)->lat_current;
481 static void action_suspend(surf_action_t action)
483 ((surf_action_network_CM02_t) action)->suspended = 1;
484 lmm_update_variable_weight(maxmin_system,
485 ((surf_action_network_CM02_t) action)->variable, 0.0);
488 static void action_resume(surf_action_t action)
490 lmm_update_variable_weight(maxmin_system,
491 ((surf_action_network_CM02_t) action)->variable,
492 ((surf_action_network_CM02_t) action)->lat_current);
493 ((surf_action_network_CM02_t) action)->suspended = 0;
496 static int action_is_suspended(surf_action_t action)
498 return ((surf_action_network_CM02_t) action)->suspended;
501 static void action_set_max_duration(surf_action_t action, double duration)
503 action->max_duration = duration;
506 static void finalize(void)
510 xbt_dict_free(&network_card_set);
511 xbt_dict_free(&network_link_set);
512 xbt_swag_free(surf_network_resource->common_public->states.
514 xbt_swag_free(surf_network_resource->common_public->states.
516 xbt_swag_free(surf_network_resource->common_public->states.
518 xbt_swag_free(surf_network_resource->common_public->states.
520 free(surf_network_resource->common_public);
521 free(surf_network_resource->common_private);
522 free(surf_network_resource->extension_public);
524 free(surf_network_resource);
525 surf_network_resource = NULL;
528 for (i = 0; i < card_number; i++)
529 for (j = 0; j < card_number; j++)
532 routing_table = NULL;
533 free(routing_table_size);
534 routing_table_size = NULL;
538 static void surf_network_resource_init_internal(void)
540 s_surf_action_t action;
542 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
544 surf_network_resource->common_private =
545 xbt_new0(s_surf_resource_private_t, 1);
546 surf_network_resource->common_public =
547 xbt_new0(s_surf_resource_public_t, 1);
548 surf_network_resource->extension_public =
549 xbt_new0(s_surf_network_resource_extension_public_t, 1);
551 surf_network_resource->common_public->states.ready_action_set =
552 xbt_swag_new(xbt_swag_offset(action, state_hookup));
553 surf_network_resource->common_public->states.running_action_set =
554 xbt_swag_new(xbt_swag_offset(action, state_hookup));
555 surf_network_resource->common_public->states.failed_action_set =
556 xbt_swag_new(xbt_swag_offset(action, state_hookup));
557 surf_network_resource->common_public->states.done_action_set =
558 xbt_swag_new(xbt_swag_offset(action, state_hookup));
560 surf_network_resource->common_public->name_service = name_service;
561 surf_network_resource->common_public->get_resource_name =
563 surf_network_resource->common_public->action_get_state =
564 surf_action_get_state;
565 surf_network_resource->common_public->action_get_start_time =
566 surf_action_get_start_time;
567 surf_network_resource->common_public->action_get_finish_time =
568 surf_action_get_finish_time;
569 surf_network_resource->common_public->action_free = action_free;
570 surf_network_resource->common_public->action_use = action_use;
571 surf_network_resource->common_public->action_cancel = action_cancel;
572 surf_network_resource->common_public->action_recycle = action_recycle;
573 surf_network_resource->common_public->action_change_state =
575 surf_network_resource->common_public->action_set_data = surf_action_set_data;
576 surf_network_resource->common_public->name = "network";
578 surf_network_resource->common_private->resource_used = resource_used;
579 surf_network_resource->common_private->share_resources = share_resources;
580 surf_network_resource->common_private->update_actions_state =
581 update_actions_state;
582 surf_network_resource->common_private->update_resource_state =
583 update_resource_state;
584 surf_network_resource->common_private->finalize = finalize;
586 surf_network_resource->common_public->suspend = action_suspend;
587 surf_network_resource->common_public->resume = action_resume;
588 surf_network_resource->common_public->is_suspended = action_is_suspended;
589 surf_cpu_resource->common_public->set_max_duration = action_set_max_duration;
591 surf_network_resource->extension_public->communicate = communicate;
592 surf_network_resource->extension_public->get_route = get_route;
593 surf_network_resource->extension_public->get_route_size = get_route_size;
594 surf_network_resource->extension_public->get_link_name = get_link_name;
595 surf_network_resource->extension_public->get_link_bandwidth = get_link_bandwidth;
596 surf_network_resource->extension_public->get_link_latency = get_link_latency;
598 network_link_set = xbt_dict_new();
599 network_card_set = xbt_dict_new();
601 xbt_assert0(maxmin_system, "surf_init has to be called first!");
604 /***************************************************************************/
605 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
606 /***************************************************************************/
607 /* @TechReport{ rr-lip2002-40, */
608 /* author = {Henri Casanova and Loris Marchal}, */
609 /* institution = {LIP}, */
610 /* title = {A Network Model for Simulation of Grid Application}, */
611 /* number = {2002-40}, */
615 void surf_network_resource_init_CM02(const char *filename)
617 if (surf_network_resource)
619 surf_network_resource_init_internal();
620 parse_file(filename);
621 xbt_dynar_push(resource_list, &surf_network_resource);