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"
10 #define SG_TCP_CTE_GAMMA 20000.0
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
13 "Logging specific to the SURF network module");
15 surf_network_resource_t surf_network_resource = NULL;
17 static xbt_dict_t network_link_set = NULL;
18 xbt_dict_t network_card_set = NULL;
20 static int card_number = 0;
21 static network_link_t **routing_table = NULL;
22 static int *routing_table_size = NULL;
24 #define ROUTE(i,j) routing_table[(i)+(j)*card_number]
25 #define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
27 static void create_routing_table(void)
29 routing_table = xbt_new0(network_link_t *, card_number * card_number);
30 routing_table_size = xbt_new0(int, card_number * card_number);
33 static void network_link_free(void *nw_link)
35 xbt_free(((network_link_t)nw_link)->name);
39 static network_link_t network_link_new(char *name,
41 tmgr_trace_t bw_trace,
43 tmgr_trace_t lat_trace,
44 e_surf_network_link_state_t
46 tmgr_trace_t state_trace)
48 network_link_t nw_link = xbt_new0(s_network_link_t, 1);
51 nw_link->resource = (surf_resource_t) surf_network_resource;
53 nw_link->bw_current = bw_initial;
56 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
57 nw_link->lat_current = lat_initial;
60 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
61 nw_link->state_current = state_initial;
63 nw_link->state_event =
64 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
67 lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
69 xbt_dict_set(network_link_set, name, nw_link, network_link_free);
74 static void network_card_free(void *nw_card)
76 xbt_free(((network_card_t)nw_card)->name);
80 static int network_card_new(const char *card_name)
82 network_card_t card = NULL;
84 xbt_dict_get(network_card_set, card_name, (void *) &card);
87 card = xbt_new0(s_network_card_t, 1);
88 card->name = xbt_strdup(card_name);
89 card->id = card_number++;
90 xbt_dict_set(network_card_set, card_name, card, network_card_free);
95 static void route_new(int src_id, int dst_id, char **links, int nb_link)
97 network_link_t *link_list = NULL;
100 ROUTE_SIZE(src_id, dst_id) = nb_link;
101 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_t, nb_link));
102 for (i = 0; i < nb_link; i++) {
103 xbt_dict_get(network_link_set, links[i], (void *) &(link_list[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 tmgr_trace_t state_trace;
119 name = xbt_strdup(A_network_link_name);
120 surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
121 surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
122 surf_parse_get_double(&lat_initial,A_network_link_latency);
123 surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
125 xbt_assert0((A_network_link_state==A_network_link_state_ON)||
126 (A_network_link_state==A_network_link_state_OFF),
128 if (A_network_link_state==A_network_link_state_ON)
129 state_initial = SURF_NETWORK_LINK_ON;
130 if (A_network_link_state==A_network_link_state_OFF)
131 state_initial = SURF_NETWORK_LINK_OFF;
132 surf_parse_get_trace(&state_trace,A_network_link_state_file);
134 network_link_new(name, bw_initial, bw_trace,
135 lat_initial, lat_trace, state_initial, state_trace);
138 static int nb_link = 0;
139 static char **link_name = 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_route_src);
146 dst_id = network_card_new(A_route_dst);
151 static void parse_route_elem(void)
154 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
155 link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
158 static void parse_route_set_route(void)
160 route_new(src_id, dst_id, link_name, nb_link);
163 static void parse_file(const char *file)
165 /* Figuring out the network links */
166 surf_parse_reset_parser();
167 ETag_network_link_fun=parse_network_link;
168 surf_parse_open(file);
169 xbt_assert1((!surf_parse()),"Parse error in %s",file);
172 /* Figuring out the network cards used */
173 surf_parse_reset_parser();
174 STag_route_fun=parse_route_set_endpoints;
175 surf_parse_open(file);
176 xbt_assert1((!surf_parse()),"Parse error in %s",file);
179 create_routing_table();
181 /* Building the routes */
182 surf_parse_reset_parser();
183 STag_route_fun=parse_route_set_endpoints;
184 ETag_route_element_fun=parse_route_elem;
185 ETag_route_fun=parse_route_set_route;
186 surf_parse_open(file);
187 xbt_assert1((!surf_parse()),"Parse error in %s",file);
191 static void *name_service(const char *name)
193 network_card_t card = NULL;
195 xbt_dict_get(network_card_set, name, (void *) &card);
200 static const char *get_resource_name(void *resource_id)
202 return ((network_card_t) resource_id)->name;
205 static int resource_used(void *resource_id)
207 return lmm_constraint_used(maxmin_system,
208 ((network_link_t) resource_id)->constraint);
211 static void action_free(surf_action_t action)
213 xbt_swag_remove(action, action->state_set);
214 if(((surf_action_network_t)action)->variable)
215 lmm_variable_free(maxmin_system, ((surf_action_network_t)action)->variable);
221 static void action_cancel(surf_action_t action)
226 static void action_recycle(surf_action_t action)
231 static void action_change_state(surf_action_t action,
232 e_surf_action_state_t state)
234 if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED))
235 if(((surf_action_network_t)action)->variable) {
236 lmm_variable_disable(maxmin_system, ((surf_action_network_t)action)->variable);
237 ((surf_action_network_t)action)->variable = NULL;
240 surf_action_change_state(action, state);
244 static double share_resources(double now)
246 s_surf_action_network_t s_action;
247 surf_action_network_t action = NULL;
248 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
249 double min = generic_maxmin_share_resources(running_actions,
250 xbt_swag_offset(s_action, variable));
252 xbt_swag_foreach(action, running_actions) {
253 if(action->latency>0) {
254 if(min<0) min = action->latency;
255 else if (action->latency<min) min = action->latency;
263 static void update_actions_state(double now, double delta)
266 surf_action_network_t action = NULL;
267 surf_action_network_t next_action = NULL;
268 xbt_swag_t running_actions =
269 surf_network_resource->common_public->states.running_action_set;
270 xbt_swag_t failed_actions =
271 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 surf_double_update(&(action->latency),deltap);
280 surf_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 surf_double_update(&(action->generic_action.remains),
287 lmm_variable_getvalue(action->variable) * deltap);
288 if (action->generic_action.max_duration != NO_MAX_DURATION)
289 surf_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 lmm_constraint_t cnst = NULL;
303 network_link_t nw_link = NULL;
306 lmm_get_cnst_from_var(maxmin_system, action->variable,
308 nw_link = lmm_constraint_id(cnst);
309 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
310 action->generic_action.finish = surf_get_clock();
311 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
321 static void update_resource_state(void *id,
322 tmgr_trace_event_t event_type,
325 network_link_t nw_link = id;
326 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
327 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
328 /* value, event_type); */
330 if (event_type == nw_link->bw_event) {
331 nw_link->bw_current = value;
332 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
333 nw_link->bw_current);
334 } else if (event_type == nw_link->lat_event) {
335 double delta = value - nw_link->lat_current;
336 lmm_variable_t var = NULL;
337 surf_action_network_t action = NULL;
339 nw_link->lat_current = value;
340 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
341 action = lmm_variable_id(var);
342 action->lat_current += delta;
344 lmm_update_variable_bound(maxmin_system, action->variable,
345 SG_TCP_CTE_GAMMA / action->lat_current);
347 lmm_update_variable_bound(maxmin_system, action->variable,
348 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
350 } else if (event_type == nw_link->state_event) {
352 nw_link->state_current = SURF_NETWORK_LINK_ON;
354 nw_link->state_current = SURF_NETWORK_LINK_OFF;
356 CRITICAL0("Unknown event ! \n");
363 static surf_action_t communicate(void *src, void *dst, double size, double rate)
365 surf_action_network_t action = NULL;
366 network_card_t card_src = src;
367 network_card_t card_dst = dst;
368 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
369 network_link_t *route = ROUTE(card_src->id, card_dst->id);
372 action = xbt_new0(s_surf_action_network_t, 1);
374 action->generic_action.cost = size;
375 action->generic_action.remains = size;
376 action->generic_action.max_duration = NO_MAX_DURATION;
377 action->generic_action.start = -1.0;
378 action->generic_action.finish = -1.0;
379 action->generic_action.resource_type =
380 (surf_resource_t) surf_network_resource;
382 action->generic_action.state_set =
383 surf_network_resource->common_public->states.running_action_set;
385 xbt_swag_insert(action, action->generic_action.state_set);
388 action->latency = 0.0;
389 for (i = 0; i < route_size; i++)
390 action->latency += route[i]->lat_current;
391 action->lat_current = action->latency;
393 if(action->latency>0)
394 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
397 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
401 lmm_update_variable_bound(maxmin_system, action->variable,
402 SG_TCP_CTE_GAMMA / action->lat_current);
404 lmm_update_variable_bound(maxmin_system, action->variable,
405 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
407 if(route_size == 0) {
408 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
411 for (i = 0; i < route_size; i++)
412 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
414 return (surf_action_t) action;
417 static void action_suspend(surf_action_t action)
419 ((surf_action_network_t) action)->suspended = 1;
420 lmm_update_variable_weight(maxmin_system,
421 ((surf_action_network_t) action)->variable, 0.0);
424 static void action_resume(surf_action_t action)
426 lmm_update_variable_weight(maxmin_system,
427 ((surf_action_network_t) action)->variable, 1.0);
428 ((surf_action_network_t) action)->suspended = 0;
431 static int action_is_suspended(surf_action_t action)
433 return ((surf_action_network_t) action)->suspended;
436 static void finalize(void)
440 xbt_dict_free(&network_card_set);
441 xbt_dict_free(&network_link_set);
442 xbt_swag_free(surf_network_resource->common_public->states.
444 xbt_swag_free(surf_network_resource->common_public->states.
446 xbt_swag_free(surf_network_resource->common_public->states.
448 xbt_swag_free(surf_network_resource->common_public->states.
450 xbt_free(surf_network_resource->common_public);
451 xbt_free(surf_network_resource->common_private);
452 xbt_free(surf_network_resource->extension_public);
454 xbt_free(surf_network_resource);
455 surf_network_resource = NULL;
457 for (i = 0; i < card_number; i++)
458 for (j = 0; j < card_number; j++)
459 xbt_free(ROUTE(i,j));
460 xbt_free(routing_table);
461 routing_table = NULL;
462 xbt_free(routing_table_size);
463 routing_table_size = NULL;
467 static void surf_network_resource_init_internal(void)
469 s_surf_action_t action;
471 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
473 surf_network_resource->common_private =
474 xbt_new0(s_surf_resource_private_t, 1);
475 surf_network_resource->common_public =
476 xbt_new0(s_surf_resource_public_t, 1);
477 surf_network_resource->extension_public =
478 xbt_new0(s_surf_network_resource_extension_public_t, 1);
480 surf_network_resource->common_public->states.ready_action_set =
481 xbt_swag_new(xbt_swag_offset(action, state_hookup));
482 surf_network_resource->common_public->states.running_action_set =
483 xbt_swag_new(xbt_swag_offset(action, state_hookup));
484 surf_network_resource->common_public->states.failed_action_set =
485 xbt_swag_new(xbt_swag_offset(action, state_hookup));
486 surf_network_resource->common_public->states.done_action_set =
487 xbt_swag_new(xbt_swag_offset(action, state_hookup));
489 surf_network_resource->common_public->name_service = name_service;
490 surf_network_resource->common_public->get_resource_name =
492 surf_network_resource->common_public->action_get_state =
493 surf_action_get_state;
494 surf_network_resource->common_public->action_free = action_free;
495 surf_network_resource->common_public->action_cancel = action_cancel;
496 surf_network_resource->common_public->action_recycle = action_recycle;
497 surf_network_resource->common_public->action_change_state =
499 surf_network_resource->common_public->action_set_data = surf_action_set_data;
500 surf_network_resource->common_public->name = "network";
502 surf_network_resource->common_private->resource_used = resource_used;
503 surf_network_resource->common_private->share_resources = share_resources;
504 surf_network_resource->common_private->update_actions_state =
505 update_actions_state;
506 surf_network_resource->common_private->update_resource_state =
507 update_resource_state;
508 surf_network_resource->common_private->finalize = finalize;
510 surf_network_resource->common_public->suspend = action_suspend;
511 surf_network_resource->common_public->resume = action_resume;
512 surf_network_resource->common_public->is_suspended = action_is_suspended;
514 surf_network_resource->extension_public->communicate = communicate;
516 network_link_set = xbt_dict_new();
517 network_card_set = xbt_dict_new();
519 xbt_assert0(maxmin_system, "surf_init has to be called first!");
522 /***************************************************************************/
523 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
524 /***************************************************************************/
525 /* @TechReport{ rr-lip2002-40, */
526 /* author = {Henri Casanova and Loris Marchal}, */
527 /* institution = {LIP}, */
528 /* title = {A Network Model for Simulation of Grid Application}, */
529 /* number = {2002-40}, */
533 void surf_network_resource_init_CM02(const char *filename)
535 if (surf_network_resource)
537 surf_network_resource_init_internal();
538 parse_file(filename);
539 xbt_dynar_push(resource_list, &surf_network_resource);