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)
38 static network_link_t network_link_new(const char *name,
39 xbt_maxmin_float_t bw_initial,
40 tmgr_trace_t bw_trace,
41 xbt_maxmin_float_t lat_initial,
42 tmgr_trace_t lat_trace,
43 e_surf_network_link_state_t
45 tmgr_trace_t state_trace)
47 network_link_t nw_link = xbt_new0(s_network_link_t, 1);
50 nw_link->resource = (surf_resource_t) surf_network_resource;
52 nw_link->bw_current = bw_initial;
55 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
56 nw_link->lat_current = lat_initial;
59 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
60 nw_link->state_current = state_initial;
62 nw_link->state_event =
63 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
66 lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
68 xbt_dict_set(network_link_set, name, nw_link, network_link_free);
73 static int network_card_new(const char *card_name)
75 network_card_t card = NULL;
77 xbt_dict_get(network_card_set, card_name, (void *) &card);
80 card = xbt_new0(s_network_card_t, 1);
81 card->name = xbt_strdup(card_name);
82 card->id = card_number++;
83 xbt_dict_set(network_card_set, card_name, card, NULL);
88 static void route_new(int src_id, int dst_id, char **links, int nb_link)
90 network_link_t *link_list = NULL;
93 ROUTE_SIZE(src_id, dst_id) = nb_link;
94 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_t, nb_link));
95 for (i = 0; i < nb_link; i++) {
96 xbt_dict_get(network_link_set, links[i], (void *) &(link_list[i]));
103 Semantic: name initial bandwidth initial latency initial state
104 bandwidth trace latency trace state trace
106 Token: TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
107 Type: string float string float string ON/OFF string
109 static void parse_network_link(void)
111 e_surf_token_t token;
113 xbt_maxmin_float_t bw_initial;
114 tmgr_trace_t bw_trace;
115 xbt_maxmin_float_t lat_initial;
116 tmgr_trace_t lat_trace;
117 e_surf_network_link_state_t state_initial;
118 tmgr_trace_t state_trace;
120 name = xbt_strdup(surf_parse_text);
122 surf_parse_float(&bw_initial);
123 surf_parse_trace(&bw_trace);
124 surf_parse_float(&lat_initial);
125 surf_parse_trace(&lat_trace);
127 token = surf_parse(); /* state_initial */
128 xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);
129 if (strcmp(surf_parse_text, "ON") == 0)
130 state_initial = SURF_NETWORK_LINK_ON;
131 else if (strcmp(surf_parse_text, "OFF") == 0)
132 state_initial = SURF_NETWORK_LINK_OFF;
134 CRITICAL2("Invalid cpu state (line %d): %s neq ON or OFF\n", line_pos,
139 surf_parse_trace(&state_trace);
141 network_link_new(name, bw_initial, bw_trace,
142 lat_initial, lat_trace, state_initial, state_trace);
146 Semantic: source destination network
149 Token: TOKEN_WORD TOKEN_WORD TOKEN_LP TOKEN_WORD* TOKEN_RP
150 Type: string string string
152 static void parse_route(int fake)
157 char **link_name = NULL;
158 e_surf_token_t token;
160 src_id = network_card_new(surf_parse_text);
162 token = surf_parse();
163 xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);
164 dst_id = network_card_new(surf_parse_text);
166 token = surf_parse();
167 xbt_assert1((token == TOKEN_LP), "Parse error line %d", line_pos);
169 while ((token = surf_parse()) == TOKEN_WORD) {
172 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
173 link_name[(nb_link) - 1] = xbt_strdup(surf_parse_text);
176 xbt_assert1((token == TOKEN_RP), "Parse error line %d", line_pos);
179 route_new(src_id, dst_id, link_name, nb_link);
182 static void parse_file(const char *file)
184 e_surf_token_t token;
186 /* Figuring out the network links in the system */
187 find_section(file, "NETWORK");
189 token = surf_parse();
191 if (token == TOKEN_END_SECTION)
193 if (token == TOKEN_NEWLINE)
196 if (token == TOKEN_WORD)
197 parse_network_link();
199 CRITICAL1("Parse error line %d\n", line_pos);
203 close_section("NETWORK");
205 /* Figuring out the network cards used */
206 find_section(file, "ROUTE");
208 token = surf_parse();
210 if (token == TOKEN_END_SECTION)
212 if (token == TOKEN_NEWLINE)
215 if (token == TOKEN_WORD)
218 CRITICAL1("Parse error line %d\n", line_pos);
222 close_section("ROUTE");
224 create_routing_table();
226 /* Building the routes */
227 find_section(file, "ROUTE");
229 token = surf_parse();
231 if (token == TOKEN_END_SECTION)
233 if (token == TOKEN_NEWLINE)
236 if (token == TOKEN_WORD)
239 CRITICAL1("Parse error line %d\n", line_pos);
243 close_section("ROUTE");
246 static void *name_service(const char *name)
248 network_card_t card = NULL;
250 xbt_dict_get(network_card_set, name, (void *) &card);
255 static const char *get_resource_name(void *resource_id)
257 return ((network_card_t) resource_id)->name;
260 static int resource_used(void *resource_id)
262 return lmm_constraint_used(maxmin_system,
263 ((network_link_t) resource_id)->constraint);
266 static void action_free(surf_action_t action)
268 surf_action_network_t Action = (surf_action_network_t) action;
270 xbt_swag_remove(action, action->state_set);
271 lmm_variable_free(maxmin_system, Action->variable);
277 static void action_cancel(surf_action_t action)
282 static void action_recycle(surf_action_t action)
287 static void action_change_state(surf_action_t action,
288 e_surf_action_state_t state)
290 surf_action_change_state(action, state);
294 static xbt_heap_float_t share_resources(xbt_heap_float_t now)
296 s_surf_action_network_t action;
297 return generic_maxmin_share_resources(surf_network_resource->
298 common_public->states.
300 xbt_swag_offset(action, variable));
304 static void update_actions_state(xbt_heap_float_t now,
305 xbt_heap_float_t delta)
307 xbt_heap_float_t deltap = 0.0;
308 surf_action_network_t action = NULL;
309 surf_action_network_t next_action = NULL;
310 xbt_swag_t running_actions =
311 surf_network_resource->common_public->states.running_action_set;
312 xbt_swag_t failed_actions =
313 surf_network_resource->common_public->states.failed_action_set;
315 xbt_swag_foreach_safe(action, next_action, running_actions) {
317 if (action->latency > 0) {
318 if (action->latency > deltap) {
319 action->latency -= deltap;
322 deltap -= action->latency;
323 action->latency = 0.0;
326 action->generic_action.remains -=
327 lmm_variable_getvalue(action->variable) * deltap;
328 if (action->generic_action.max_duration != NO_MAX_DURATION)
329 action->generic_action.max_duration -= delta;
331 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
333 if (action->generic_action.remains <= 0) {
334 action->generic_action.finish = surf_get_clock();
335 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
336 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
337 (action->generic_action.max_duration <= 0)) {
338 action->generic_action.finish = surf_get_clock();
339 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
340 } else { /* Need to check that none of the resource has failed */
341 lmm_constraint_t cnst = NULL;
343 network_link_t nw_link = NULL;
346 lmm_get_cnst_from_var(maxmin_system, action->variable,
348 nw_link = lmm_constraint_id(cnst);
349 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
350 action->generic_action.finish = surf_get_clock();
351 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
358 xbt_swag_foreach_safe(action, next_action, failed_actions) {
359 lmm_variable_disable(maxmin_system, action->variable);
365 static void update_resource_state(void *id,
366 tmgr_trace_event_t event_type,
367 xbt_maxmin_float_t value)
369 network_link_t nw_link = id;
371 /* printf("[" XBT_HEAP_FLOAT_T "] Asking to update network card \"%s\" with value " */
372 /* XBT_MAXMIN_FLOAT_T " for event %p\n", surf_get_clock(), nw_link->name, */
373 /* value, event_type); */
375 if (event_type == nw_link->bw_event) {
376 nw_link->bw_current = value;
377 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
378 nw_link->bw_current);
379 } else if (event_type == nw_link->lat_event) {
380 xbt_maxmin_float_t delta = value - nw_link->lat_current;
381 lmm_variable_t var = NULL;
382 surf_action_network_t action = NULL;
384 nw_link->lat_current = value;
385 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
386 action = lmm_variable_id(var);
387 action->lat_current += delta;
388 lmm_update_variable_bound(maxmin_system, var,
389 1 / (action->lat_current));
391 } else if (event_type == nw_link->state_event) {
393 nw_link->state_current = SURF_NETWORK_LINK_ON;
395 nw_link->state_current = SURF_NETWORK_LINK_OFF;
397 CRITICAL0("Unknown event ! \n");
404 static surf_action_t communicate(void *src, void *dst,
405 xbt_maxmin_float_t size)
407 surf_action_network_t action = NULL;
408 network_card_t card_src = src;
409 network_card_t card_dst = dst;
410 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
411 network_link_t *route = ROUTE(card_src->id, card_dst->id);
414 action = xbt_new0(s_surf_action_network_t, 1);
416 action->generic_action.cost = size;
417 action->generic_action.remains = size;
418 action->generic_action.max_duration = NO_MAX_DURATION;
419 action->generic_action.start = -1.0;
420 action->generic_action.finish = -1.0;
421 action->generic_action.callback = NULL;
422 action->generic_action.resource_type =
423 (surf_resource_t) surf_network_resource;
425 action->generic_action.state_set =
426 surf_network_resource->common_public->states.running_action_set;
428 xbt_swag_insert(action, action->generic_action.state_set);
430 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
432 for (i = 0; i < route_size; i++)
433 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
435 action->latency = 0.0;
436 for (i = 0; i < route_size; i++)
437 action->latency += route[i]->lat_current;
438 action->lat_current = action->latency;
439 lmm_update_variable_bound(maxmin_system, action->variable,
440 SG_TCP_CTE_GAMMA / action->lat_current);
442 return (surf_action_t) action;
445 static void finalize(void)
447 xbt_dict_free(&network_card_set);
448 xbt_dict_free(&network_link_set);
449 xbt_swag_free(surf_network_resource->common_public->states.
451 xbt_swag_free(surf_network_resource->common_public->states.
453 xbt_swag_free(surf_network_resource->common_public->states.
455 xbt_swag_free(surf_network_resource->common_public->states.
457 xbt_free(surf_network_resource->common_public);
458 xbt_free(surf_network_resource->common_private);
459 xbt_free(surf_network_resource->extension_public);
461 xbt_free(surf_network_resource);
462 surf_network_resource = NULL;
465 static void surf_network_resource_init_internal(void)
467 s_surf_action_t action;
469 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
471 surf_network_resource->common_private =
472 xbt_new0(s_surf_resource_private_t, 1);
473 surf_network_resource->common_public =
474 xbt_new0(s_surf_resource_public_t, 1);
475 /* surf_network_resource->extension_private = xbt_new0(s_surf_network_resource_extension_private_t,1); */
476 surf_network_resource->extension_public =
477 xbt_new0(s_surf_network_resource_extension_public_t, 1);
479 surf_network_resource->common_public->states.ready_action_set =
480 xbt_swag_new(xbt_swag_offset(action, state_hookup));
481 surf_network_resource->common_public->states.running_action_set =
482 xbt_swag_new(xbt_swag_offset(action, state_hookup));
483 surf_network_resource->common_public->states.failed_action_set =
484 xbt_swag_new(xbt_swag_offset(action, state_hookup));
485 surf_network_resource->common_public->states.done_action_set =
486 xbt_swag_new(xbt_swag_offset(action, state_hookup));
488 surf_network_resource->common_public->name_service = name_service;
489 surf_network_resource->common_public->get_resource_name =
491 surf_network_resource->common_public->action_get_state =
492 surf_action_get_state;
493 surf_network_resource->common_public->action_free = action_free;
494 surf_network_resource->common_public->action_cancel = action_cancel;
495 surf_network_resource->common_public->action_recycle = action_recycle;
496 surf_network_resource->common_public->action_change_state =
498 surf_network_resource->common_public->name = "network";
500 surf_network_resource->common_private->resource_used = resource_used;
501 surf_network_resource->common_private->share_resources = share_resources;
502 surf_network_resource->common_private->update_actions_state =
503 update_actions_state;
504 surf_network_resource->common_private->update_resource_state =
505 update_resource_state;
506 surf_network_resource->common_private->finalize = finalize;
508 surf_network_resource->extension_public->communicate = communicate;
510 network_link_set = xbt_dict_new();
511 network_card_set = xbt_dict_new();
513 xbt_assert0(maxmin_system, "surf_init has to be called first!");
516 void surf_network_resource_init(const char *filename)
518 if (surf_network_resource)
520 surf_network_resource_init_internal();
521 parse_file(filename);
522 xbt_dynar_push(resource_list, &surf_network_resource);