src/surf/network_dassf.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2005 Henri Casanova. All rights reserved.                  */
   4
   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. */
   7
   8 #include "network_dassf_private.h"
   9
  10 #define SG_TCP_CTE_GAMMA 20000.0
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network_dassf, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 /* 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; */
  18
  19 static int card_number = 0;
  20 static network_link_DASSF_t **routing_table = NULL;
  21 static int *routing_table_size = NULL;
  22
  23 #define ROUTE(i,j) routing_table[(i)+(j)*card_number]
  24 #define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
  25
  26 static void create_routing_table(void)
  27 {
  28   routing_table = xbt_new0(network_link_DASSF_t *, card_number * card_number);
  29   routing_table_size = xbt_new0(int, card_number * card_number);
  30 }
  31
  32 static void network_link_free(void *nw_link)
  33 {
  34   free(((network_link_DASSF_t)nw_link)->name);
  35   free(nw_link);
  36 }
  37
  38 static network_link_DASSF_t network_link_new(char *name,
  39                                        double bw_initial,
  40                                        tmgr_trace_t bw_trace,
  41                                        double lat_initial,
  42                                        tmgr_trace_t lat_trace,
  43                                        e_surf_network_link_state_t
  44                                        state_initial,
  45                                        tmgr_trace_t state_trace)
  46 {
  47   network_link_DASSF_t nw_link = xbt_new0(s_network_link_DASSF_t, 1);
  48
  49
  50   nw_link->resource = (surf_resource_t) surf_network_resource;
  51   nw_link->name = name;
  52   nw_link->bw_current = bw_initial;
  53   if (bw_trace)
  54     nw_link->bw_event =
  55         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  56   nw_link->lat_current = lat_initial;
  57   if (lat_trace)
  58     nw_link->lat_event =
  59         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  60   nw_link->state_current = state_initial;
  61   if (state_trace)
  62     nw_link->state_event =
  63         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  64
  65   nw_link->constraint =
  66       lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
  67
  68   xbt_dict_set(network_link_set, name, nw_link, network_link_free);
  69
  70   return nw_link;
  71 }
  72
  73 static void network_card_free(void *nw_card)
  74 {
  75   free(((network_card_DASSF_t)nw_card)->name);
  76   free(nw_card);
  77 }
  78
  79 static int network_card_new(const char *card_name)
  80 {
  81   network_card_DASSF_t card = xbt_dict_get_or_null(network_card_set, card_name);
  82
  83   if (!card) {
  84     card = xbt_new0(s_network_card_DASSF_t, 1);
  85     card->name = xbt_strdup(card_name);
  86     card->id = card_number++;
  87     xbt_dict_set(network_card_set, card_name, card, network_card_free);
  88   }
  89   return card->id;
  90 }
  91
  92 static void route_new(int src_id, int dst_id, char **links, int nb_link)
  93 {
  94   network_link_DASSF_t *link_list = NULL;
  95   int i;
  96
  97   ROUTE_SIZE(src_id, dst_id) = nb_link;
  98   link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_DASSF_t, nb_link));
  99   for (i = 0; i < nb_link; i++) {
 100     link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
 101     free(links[i]);
 102   }
 103   free(links);
 104 }
 105
 106 static void parse_network_link(void)
 107 {
 108   char *name;
 109   double bw_initial;
 110   tmgr_trace_t bw_trace;
 111   double lat_initial;
 112   tmgr_trace_t lat_trace;
 113   e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
 114   tmgr_trace_t state_trace;
 115
 116   name = xbt_strdup(A_network_link_name);
 117   surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
 118   surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
 119   surf_parse_get_double(&lat_initial,A_network_link_latency);
 120   surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
 121
 122   xbt_assert0((A_network_link_state==A_network_link_state_ON)||
 123               (A_network_link_state==A_network_link_state_OFF),
 124               "Invalid state");
 125   if (A_network_link_state==A_network_link_state_ON)
 126     state_initial = SURF_NETWORK_LINK_ON;
 127   if (A_network_link_state==A_network_link_state_OFF)
 128     state_initial = SURF_NETWORK_LINK_OFF;
 129   surf_parse_get_trace(&state_trace,A_network_link_state_file);
 130
 131   network_link_new(name, bw_initial, bw_trace,
 132                    lat_initial, lat_trace, state_initial, state_trace);
 133 }
 134
 135 static int nb_link = 0;
 136 static char **link_name = NULL;
 137 static int src_id = -1;
 138 static int dst_id = -1;
 139
 140 static void parse_route_set_endpoints(void)
 141 {
 142   src_id = network_card_new(A_route_src);
 143   dst_id = network_card_new(A_route_dst);
 144   nb_link = 0;
 145   link_name = NULL;
 146 }
 147
 148 static void parse_route_elem(void)
 149 {
 150   nb_link++;
 151   link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
 152   link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
 153 }
 154
 155 static void parse_route_set_route(void)
 156 {
 157   route_new(src_id, dst_id, link_name, nb_link);
 158 }
 159
 160 static void parse_file(const char *file)
 161 {
 162   /* Figuring out the network links */
 163   surf_parse_reset_parser();
 164   ETag_network_link_fun=parse_network_link;
 165   surf_parse_open(file);
 166   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 167   surf_parse_close();
 168
 169   /* Figuring out the network cards used */
 170   surf_parse_reset_parser();
 171   STag_route_fun=parse_route_set_endpoints;
 172   surf_parse_open(file);
 173   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 174   surf_parse_close();
 175
 176   create_routing_table();
 177
 178   /* Building the routes */
 179   surf_parse_reset_parser();
 180   STag_route_fun=parse_route_set_endpoints;
 181   ETag_route_element_fun=parse_route_elem;
 182   ETag_route_fun=parse_route_set_route;
 183   surf_parse_open(file);
 184   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 185   surf_parse_close();
 186 }
 187
 188 static void *name_service(const char *name)
 189 {
 190   return xbt_dict_get_or_null(network_card_set, name);
 191 }
 192
 193 static const char *get_resource_name(void *resource_id)
 194 {
 195   return ((network_card_DASSF_t) resource_id)->name;
 196 }
 197
 198 static int resource_used(void *resource_id)
 199 {
 200   return lmm_constraint_used(maxmin_system,
 201                              ((network_link_DASSF_t) resource_id)->constraint);
 202 }
 203
 204 static int action_free(surf_action_t action)
 205 {
 206   action->using--;
 207   if(!action->using) {
 208     xbt_swag_remove(action, action->state_set);
 209     if(((surf_action_network_DASSF_t)action)->variable)
 210       lmm_variable_free(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
 211     free(action);
 212   }
 213   return 1;
 214 }
 215
 216 static void action_cancel(surf_action_t action)
 217 {
 218   return;
 219 }
 220
 221 static void action_recycle(surf_action_t action)
 222 {
 223   return;
 224 }
 225
 226 static void action_change_state(surf_action_t action,
 227                                 e_surf_action_state_t state)
 228 {
 229 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 230 /*     if(((surf_action_network_DASSF_t)action)->variable) { */
 231 /*       lmm_variable_disable(maxmin_system, ((surf_action_network_DASSF_t)action)->variable); */
 232 /*       ((surf_action_network_DASSF_t)action)->variable = NULL; */
 233 /*     } */
 234
 235   surf_action_change_state(action, state);
 236   return;
 237 }
 238
 239 static double share_resources(double now)
 240 {
 241   s_surf_action_network_DASSF_t s_action;
 242   surf_action_network_DASSF_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));
 246
 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;
 251     }
 252   }
 253
 254   return min;
 255 }
 256
 257 static void update_actions_state(double now, double delta)
 258 {
 259   double deltap = 0.0;
 260   surf_action_network_DASSF_t action = NULL;
 261   surf_action_network_DASSF_t next_action = NULL;
 262   xbt_swag_t running_actions =
 263       surf_network_resource->common_public->states.running_action_set;
 264   /* KILLME: unused
 265   xbt_swag_t failed_actions =
 266       surf_network_resource->common_public->states.failed_action_set;
 267   */
 268
 269   xbt_swag_foreach_safe(action, next_action, running_actions) {
 270     deltap = delta;
 271     if (action->latency > 0) {
 272       if (action->latency > deltap) {
 273         surf_double_update(&(action->latency),deltap);
 274         deltap = 0.0;
 275       } else {
 276         surf_double_update(&(deltap), action->latency);
 277         action->latency = 0.0;
 278       }
 279       if ((action->latency == 0.0) && !(action->suspended))
 280         lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
 281     }
 282     surf_double_update(&(action->generic_action.remains),
 283         lmm_variable_getvalue(action->variable) * deltap);
 284     if (action->generic_action.max_duration != NO_MAX_DURATION)
 285       surf_double_update(&(action->generic_action.max_duration), delta);
 286
 287     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 288
 289     if (action->generic_action.remains <= 0) {
 290       action->generic_action.finish = surf_get_clock();
 291       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 292     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 293                (action->generic_action.max_duration <= 0)) {
 294       action->generic_action.finish = surf_get_clock();
 295       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 296     } else {                    /* Need to check that none of the resource has failed */
 297       lmm_constraint_t cnst = NULL;
 298       int i = 0;
 299       network_link_DASSF_t nw_link = NULL;
 300
 301       while ((cnst =
 302               lmm_get_cnst_from_var(maxmin_system, action->variable,
 303                                     i++))) {
 304         nw_link = lmm_constraint_id(cnst);
 305         if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
 306           action->generic_action.finish = surf_get_clock();
 307           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 308           break;
 309         }
 310       }
 311     }
 312   }
 313
 314   return;
 315 }
 316
 317 static void update_resource_state(void *id,
 318                                   tmgr_trace_event_t event_type,
 319                                   double value)
 320 {
 321   network_link_DASSF_t nw_link = id;
 322   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 323   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 324   /*     value, event_type); */
 325
 326   if (event_type == nw_link->bw_event) {
 327     nw_link->bw_current = value;
 328     lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
 329                                 nw_link->bw_current);
 330   } else if (event_type == nw_link->lat_event) {
 331     double delta = value - nw_link->lat_current;
 332     lmm_variable_t var = NULL;
 333     surf_action_network_DASSF_t action = NULL;
 334
 335     nw_link->lat_current = value;
 336     while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
 337       action = lmm_variable_id(var);
 338       action->lat_current += delta;
 339       if(action->rate<0)
 340         lmm_update_variable_bound(maxmin_system, action->variable,
 341                                   SG_TCP_CTE_GAMMA / action->lat_current);
 342       else
 343         lmm_update_variable_bound(maxmin_system, action->variable,
 344                                   min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 345     }
 346   } else if (event_type == nw_link->state_event) {
 347     if (value > 0)
 348       nw_link->state_current = SURF_NETWORK_LINK_ON;
 349     else
 350       nw_link->state_current = SURF_NETWORK_LINK_OFF;
 351   } else {
 352     CRITICAL0("Unknown event ! \n");
 353     xbt_abort();
 354   }
 355
 356   return;
 357 }
 358
 359 static surf_action_t communicate(void *src, void *dst, double size, double rate)
 360 {
 361   surf_action_network_DASSF_t action = NULL;
 362   network_card_DASSF_t card_src = src;
 363   network_card_DASSF_t card_dst = dst;
 364   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 365   network_link_DASSF_t *route = ROUTE(card_src->id, card_dst->id);
 366   int i;
 367
 368   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);
 369
 370   action = xbt_new0(s_surf_action_network_DASSF_t, 1);
 371
 372   action->generic_action.using = 1;
 373   action->generic_action.cost = size;
 374   action->generic_action.remains = size;
 375   action->generic_action.max_duration = NO_MAX_DURATION;
 376   action->generic_action.start = -1.0;
 377   action->generic_action.finish = -1.0;
 378   action->generic_action.resource_type =
 379       (surf_resource_t) surf_network_resource;
 380
 381   action->generic_action.state_set =
 382       surf_network_resource->common_public->states.running_action_set;
 383
 384   xbt_swag_insert(action, action->generic_action.state_set);
 385   action->rate = rate;
 386
 387   action->latency = 0.0;
 388   for (i = 0; i < route_size; i++)
 389     action->latency += route[i]->lat_current;
 390   action->lat_current = action->latency;
 391
 392   if(action->latency>0)
 393     action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
 394                                         route_size);
 395   else
 396     action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
 397                                         route_size);
 398
 399   if(action->rate<0)
 400     lmm_update_variable_bound(maxmin_system, action->variable,
 401                               SG_TCP_CTE_GAMMA / action->lat_current);
 402   else
 403     lmm_update_variable_bound(maxmin_system, action->variable,
 404                               min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 405
 406   if(route_size == 0) {
 407     action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 408   }
 409
 410   for (i = 0; i < route_size; i++)
 411     lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
 412
 413   return (surf_action_t) action;
 414 }
 415
 416 static void action_suspend(surf_action_t action)
 417 {
 418   ((surf_action_network_DASSF_t) action)->suspended = 1;
 419   lmm_update_variable_weight(maxmin_system,
 420                              ((surf_action_network_DASSF_t) action)->variable, 0.0);
 421 }
 422
 423 static void action_resume(surf_action_t action)
 424 {
 425   lmm_update_variable_weight(maxmin_system,
 426                              ((surf_action_network_DASSF_t) action)->variable, 1.0);
 427   ((surf_action_network_DASSF_t) action)->suspended = 0;
 428 }
 429
 430 static int action_is_suspended(surf_action_t action)
 431 {
 432   return ((surf_action_network_DASSF_t) action)->suspended;
 433 }
 434
 435 static void finalize(void)
 436 {
 437   int i,j;
 438
 439   xbt_dict_free(&network_card_set);
 440   xbt_dict_free(&network_link_set);
 441   xbt_swag_free(surf_network_resource->common_public->states.
 442                 ready_action_set);
 443   xbt_swag_free(surf_network_resource->common_public->states.
 444                 running_action_set);
 445   xbt_swag_free(surf_network_resource->common_public->states.
 446                 failed_action_set);
 447   xbt_swag_free(surf_network_resource->common_public->states.
 448                 done_action_set);
 449   free(surf_network_resource->common_public);
 450   free(surf_network_resource->common_private);
 451   free(surf_network_resource->extension_public);
 452
 453   free(surf_network_resource);
 454   surf_network_resource = NULL;
 455
 456   for (i = 0; i < card_number; i++)
 457     for (j = 0; j < card_number; j++)
 458       free(ROUTE(i,j));
 459   free(routing_table);
 460   routing_table = NULL;
 461   free(routing_table_size);
 462   routing_table_size = NULL;
 463   card_number = 0;
 464 }
 465
 466 static void surf_network_resource_init_internal(void)
 467 {
 468   s_surf_action_t action;
 469
 470   surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
 471
 472   surf_network_resource->common_private =
 473       xbt_new0(s_surf_resource_private_t, 1);
 474   surf_network_resource->common_public =
 475       xbt_new0(s_surf_resource_public_t, 1);
 476   surf_network_resource->extension_public =
 477       xbt_new0(s_surf_network_resource_extension_public_t, 1);
 478
 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));
 487
 488   surf_network_resource->common_public->name_service = name_service;
 489   surf_network_resource->common_public->get_resource_name =
 490       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 =
 497       action_change_state;
 498   surf_network_resource->common_public->action_set_data = surf_action_set_data;
 499   surf_network_resource->common_public->name = "network";
 500
 501   surf_network_resource->common_private->resource_used = resource_used;
 502   surf_network_resource->common_private->share_resources = share_resources;
 503   surf_network_resource->common_private->update_actions_state =
 504       update_actions_state;
 505   surf_network_resource->common_private->update_resource_state =
 506       update_resource_state;
 507   surf_network_resource->common_private->finalize = finalize;
 508
 509   surf_network_resource->common_public->suspend = action_suspend;
 510   surf_network_resource->common_public->resume = action_resume;
 511   surf_network_resource->common_public->is_suspended = action_is_suspended;
 512
 513   surf_network_resource->extension_public->communicate = communicate;
 514
 515   network_link_set = xbt_dict_new();
 516   network_card_set = xbt_dict_new();
 517
 518   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 519 }
 520
 521 /***************************************************************************/
 522 /* The nice Hack by Henri to use DASSF from within SURF !                  */
 523 /***************************************************************************/
 524 /* I put this prototype here for now but it will have to go in
 525    src/include/surf.h when it will be functionnal. */
 526 void surf_network_resource_init_DASSF(const char *filename);
 527
 528 void surf_network_resource_init_DASSF(const char *filename)
 529 {
 530   if (surf_network_resource)
 531     return;
 532   surf_network_resource_init_internal();
 533   parse_file(filename);
 534   xbt_dynar_push(resource_list, &surf_network_resource);
 535 }