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);
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);
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);
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 surf_action_network_t Action = (surf_action_network_t) action;
215 xbt_swag_remove(action, action->state_set);
216 lmm_variable_free(maxmin_system, Action->variable);
222 static void action_cancel(surf_action_t action)
227 static void action_recycle(surf_action_t action)
232 static void action_change_state(surf_action_t action,
233 e_surf_action_state_t state)
235 surf_action_change_state(action, state);
239 static double share_resources(double now)
241 s_surf_action_network_t s_action;
242 surf_action_network_t action = NULL;
243 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
244 double min = generic_maxmin_share_resources(running_actions,
245 xbt_swag_offset(s_action, variable));
247 xbt_swag_foreach(action, running_actions) {
248 if(action->latency>0) {
249 if(min<0) min = action->latency;
250 else if (action->latency<min) min = action->latency;
258 static void update_actions_state(double now, double delta)
261 surf_action_network_t action = NULL;
262 surf_action_network_t next_action = NULL;
263 xbt_swag_t running_actions =
264 surf_network_resource->common_public->states.running_action_set;
265 xbt_swag_t failed_actions =
266 surf_network_resource->common_public->states.failed_action_set;
268 xbt_swag_foreach_safe(action, next_action, running_actions) {
270 if (action->latency > 0) {
271 if (action->latency > deltap) {
272 action->latency -= deltap;
275 deltap -= action->latency;
276 action->latency = 0.0;
278 if (action->latency == 0.0)
279 lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
281 action->generic_action.remains -=
282 lmm_variable_getvalue(action->variable) * deltap;
283 if (action->generic_action.max_duration != NO_MAX_DURATION)
284 action->generic_action.max_duration -= delta;
286 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
288 if (action->generic_action.remains <= 0) {
289 action->generic_action.finish = surf_get_clock();
290 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
291 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
292 (action->generic_action.max_duration <= 0)) {
293 action->generic_action.finish = surf_get_clock();
294 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
295 } else { /* Need to check that none of the resource has failed */
296 lmm_constraint_t cnst = NULL;
298 network_link_t nw_link = NULL;
301 lmm_get_cnst_from_var(maxmin_system, action->variable,
303 nw_link = lmm_constraint_id(cnst);
304 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
305 action->generic_action.finish = surf_get_clock();
306 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
313 xbt_swag_foreach_safe(action, next_action, failed_actions) {
314 lmm_variable_disable(maxmin_system, action->variable);
320 static void update_resource_state(void *id,
321 tmgr_trace_event_t event_type,
324 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;
343 lmm_update_variable_bound(maxmin_system, var,
344 1 / (action->lat_current));
346 } else if (event_type == nw_link->state_event) {
348 nw_link->state_current = SURF_NETWORK_LINK_ON;
350 nw_link->state_current = SURF_NETWORK_LINK_OFF;
352 CRITICAL0("Unknown event ! \n");
359 static surf_action_t communicate(void *src, void *dst, double size)
361 surf_action_network_t action = NULL;
362 network_card_t card_src = src;
363 network_card_t card_dst = dst;
364 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
365 network_link_t *route = ROUTE(card_src->id, card_dst->id);
368 action = xbt_new0(s_surf_action_network_t, 1);
370 action->generic_action.cost = size;
371 action->generic_action.remains = size;
372 action->generic_action.max_duration = NO_MAX_DURATION;
373 action->generic_action.start = -1.0;
374 action->generic_action.finish = -1.0;
375 action->generic_action.resource_type =
376 (surf_resource_t) surf_network_resource;
378 action->generic_action.state_set =
379 surf_network_resource->common_public->states.running_action_set;
381 xbt_swag_insert(action, action->generic_action.state_set);
383 action->latency = 0.0;
384 for (i = 0; i < route_size; i++)
385 action->latency += route[i]->lat_current;
386 action->lat_current = action->latency;
388 if(action->latency>0)
389 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
392 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
395 lmm_update_variable_bound(maxmin_system, action->variable,
396 SG_TCP_CTE_GAMMA / action->lat_current);
398 for (i = 0; i < route_size; i++)
399 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
401 return (surf_action_t) action;
404 static void finalize(void)
408 xbt_dict_free(&network_card_set);
409 xbt_dict_free(&network_link_set);
410 xbt_swag_free(surf_network_resource->common_public->states.
412 xbt_swag_free(surf_network_resource->common_public->states.
414 xbt_swag_free(surf_network_resource->common_public->states.
416 xbt_swag_free(surf_network_resource->common_public->states.
418 xbt_free(surf_network_resource->common_public);
419 xbt_free(surf_network_resource->common_private);
420 xbt_free(surf_network_resource->extension_public);
422 xbt_free(surf_network_resource);
423 surf_network_resource = NULL;
425 for (i = 0; i < card_number; i++)
426 for (j = 0; j < card_number; j++)
427 xbt_free(ROUTE(i,j));
428 xbt_free(routing_table);
429 routing_table = NULL;
430 xbt_free(routing_table_size);
431 routing_table_size = NULL;
435 static void surf_network_resource_init_internal(void)
437 s_surf_action_t action;
439 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
441 surf_network_resource->common_private =
442 xbt_new0(s_surf_resource_private_t, 1);
443 surf_network_resource->common_public =
444 xbt_new0(s_surf_resource_public_t, 1);
445 /* surf_network_resource->extension_private = xbt_new0(s_surf_network_resource_extension_private_t,1); */
446 surf_network_resource->extension_public =
447 xbt_new0(s_surf_network_resource_extension_public_t, 1);
449 surf_network_resource->common_public->states.ready_action_set =
450 xbt_swag_new(xbt_swag_offset(action, state_hookup));
451 surf_network_resource->common_public->states.running_action_set =
452 xbt_swag_new(xbt_swag_offset(action, state_hookup));
453 surf_network_resource->common_public->states.failed_action_set =
454 xbt_swag_new(xbt_swag_offset(action, state_hookup));
455 surf_network_resource->common_public->states.done_action_set =
456 xbt_swag_new(xbt_swag_offset(action, state_hookup));
458 surf_network_resource->common_public->name_service = name_service;
459 surf_network_resource->common_public->get_resource_name =
461 surf_network_resource->common_public->action_get_state =
462 surf_action_get_state;
463 surf_network_resource->common_public->action_free = action_free;
464 surf_network_resource->common_public->action_cancel = action_cancel;
465 surf_network_resource->common_public->action_recycle = action_recycle;
466 surf_network_resource->common_public->action_change_state =
468 surf_network_resource->common_public->action_set_data = surf_action_set_data;
469 surf_network_resource->common_public->name = "network";
471 surf_network_resource->common_private->resource_used = resource_used;
472 surf_network_resource->common_private->share_resources = share_resources;
473 surf_network_resource->common_private->update_actions_state =
474 update_actions_state;
475 surf_network_resource->common_private->update_resource_state =
476 update_resource_state;
477 surf_network_resource->common_private->finalize = finalize;
479 surf_network_resource->extension_public->communicate = communicate;
481 network_link_set = xbt_dict_new();
482 network_card_set = xbt_dict_new();
484 xbt_assert0(maxmin_system, "surf_init has to be called first!");
487 void surf_network_resource_init(const char *filename)
489 if (surf_network_resource)
491 surf_network_resource_init_internal();
492 parse_file(filename);
493 xbt_dynar_push(resource_list, &surf_network_resource);