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 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
  11
  12 /* surf_network_resource_t surf_network_resource = NULL; */
  13 static xbt_dict_t network_link_set = NULL;
  14 /* xbt_dict_t network_card_set = NULL; */
  15
  16 static int card_number = 0;
  17 static network_link_DASSF_t **routing_table = NULL;
  18 static int *routing_table_size = NULL;
  19
  20 #define ROUTE(i,j) routing_table[(i)+(j)*card_number]
  21 #define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
  22
  23 static void create_routing_table(void)
  24 {
  25   routing_table = xbt_new0(network_link_DASSF_t *, card_number * card_number);
  26   routing_table_size = xbt_new0(int, card_number * card_number);
  27 }
  28
  29 static void network_link_free(void *nw_link)
  30 {
  31   free(((network_link_DASSF_t)nw_link)->name);
  32   free(nw_link);
  33 }
  34
  35 static network_link_DASSF_t network_link_new(char *name,
  36                                        double bw_initial,
  37                                        tmgr_trace_t bw_trace,
  38                                        double lat_initial,
  39                                        tmgr_trace_t lat_trace,
  40                                        e_surf_network_link_state_t
  41                                        state_initial,
  42                                        tmgr_trace_t state_trace)
  43 {
  44   network_link_DASSF_t nw_link = xbt_new0(s_network_link_DASSF_t, 1);
  45
  46
  47   nw_link->resource = (surf_resource_t) surf_network_resource;
  48   nw_link->name = name;
  49   nw_link->bw_current = bw_initial;
  50   if (bw_trace)
  51     nw_link->bw_event =
  52         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  53   nw_link->lat_current = lat_initial;
  54   if (lat_trace)
  55     nw_link->lat_event =
  56         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  57   nw_link->state_current = state_initial;
  58   if (state_trace)
  59     nw_link->state_event =
  60         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  61
  62   nw_link->constraint =
  63       lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
  64
  65   xbt_dict_set(network_link_set, name, nw_link, network_link_free);
  66
  67   return nw_link;
  68 }
  69
  70 static void network_card_free(void *nw_card)
  71 {
  72   free(((network_card_DASSF_t)nw_card)->name);
  73   free(nw_card);
  74 }
  75
  76 static int network_card_new(const char *card_name)
  77 {
  78   network_card_DASSF_t card = xbt_dict_get_or_null(network_card_set, card_name);
  79
  80   if (!card) {
  81     card = xbt_new0(s_network_card_DASSF_t, 1);
  82     card->name = xbt_strdup(card_name);
  83     card->id = card_number++;
  84     xbt_dict_set(network_card_set, card_name, card, network_card_free);
  85   }
  86   return card->id;
  87 }
  88
  89 static void route_new(int src_id, int dst_id, char **links, int nb_link)
  90 {
  91   network_link_DASSF_t *link_list = NULL;
  92   int i;
  93
  94   ROUTE_SIZE(src_id, dst_id) = nb_link;
  95   link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_DASSF_t, nb_link));
  96   for (i = 0; i < nb_link; i++) {
  97     link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
  98     free(links[i]);
  99   }
 100   free(links);
 101 }
 102
 103 static void parse_network_link(void)
 104 {
 105   char *name;
 106   double bw_initial;
 107   tmgr_trace_t bw_trace;
 108   double lat_initial;
 109   tmgr_trace_t lat_trace;
 110   e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
 111   tmgr_trace_t state_trace;
 112
 113   name = xbt_strdup(A_surfxml_network_link_name);
 114   surf_parse_get_double(&bw_initial,A_surfxml_network_link_bandwidth);
 115   surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
 116   surf_parse_get_double(&lat_initial,A_surfxml_network_link_latency);
 117   surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
 118
 119   xbt_assert0((A_surfxml_network_link_state==A_surfxml_network_link_state_ON)||
 120               (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF),
 121               "Invalid state");
 122   if (A_surfxml_network_link_state==A_surfxml_network_link_state_ON)
 123     state_initial = SURF_NETWORK_LINK_ON;
 124   if (A_surfxml_network_link_state==A_surfxml_network_link_state_OFF)
 125     state_initial = SURF_NETWORK_LINK_OFF;
 126   surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
 127
 128   network_link_new(name, bw_initial, bw_trace,
 129                    lat_initial, lat_trace, state_initial, state_trace);
 130 }
 131
 132 static int nb_link = 0;
 133 static char **link_name = NULL;
 134 static int src_id = -1;
 135 static int dst_id = -1;
 136
 137 static void parse_route_set_endpoints(void)
 138 {
 139   src_id = network_card_new(A_surfxml_route_src);
 140   dst_id = network_card_new(A_surfxml_route_dst);
 141   nb_link = 0;
 142   link_name = NULL;
 143 }
 144
 145 static void parse_route_elem(void)
 146 {
 147   nb_link++;
 148   link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
 149   link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
 150 }
 151
 152 static void parse_route_set_route(void)
 153 {
 154   route_new(src_id, dst_id, link_name, nb_link);
 155 }
 156
 157 static void parse_file(const char *file)
 158 {
 159   /* Figuring out the network links */
 160   surf_parse_reset_parser();
 161   ETag_surfxml_network_link_fun=parse_network_link;
 162   surf_parse_open(file);
 163   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 164   surf_parse_close();
 165
 166   /* Figuring out the network cards used */
 167   surf_parse_reset_parser();
 168   STag_surfxml_route_fun=parse_route_set_endpoints;
 169   surf_parse_open(file);
 170   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 171   surf_parse_close();
 172
 173   create_routing_table();
 174
 175   /* Building the routes */
 176   surf_parse_reset_parser();
 177   STag_surfxml_route_fun=parse_route_set_endpoints;
 178   ETag_surfxml_route_element_fun=parse_route_elem;
 179   ETag_surfxml_route_fun=parse_route_set_route;
 180   surf_parse_open(file);
 181   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 182   surf_parse_close();
 183 }
 184
 185 static void *name_service(const char *name)
 186 {
 187   return xbt_dict_get_or_null(network_card_set, name);
 188 }
 189
 190 static const char *get_resource_name(void *resource_id)
 191 {
 192   return ((network_card_DASSF_t) resource_id)->name;
 193 }
 194
 195 static int resource_used(void *resource_id)
 196 {
 197   return lmm_constraint_used(maxmin_system,
 198                              ((network_link_DASSF_t) resource_id)->constraint);
 199 }
 200
 201 static int action_free(surf_action_t action)
 202 {
 203   action->using--;
 204   if(!action->using) {
 205     xbt_swag_remove(action, action->state_set);
 206     if(((surf_action_network_DASSF_t)action)->variable)
 207       lmm_variable_free(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
 208     free(action);
 209   }
 210   return 1;
 211 }
 212
 213 static void action_cancel(surf_action_t action)
 214 {
 215   return;
 216 }
 217
 218 static void action_recycle(surf_action_t action)
 219 {
 220   return;
 221 }
 222
 223 static void action_change_state(surf_action_t action,
 224                                 e_surf_action_state_t state)
 225 {
 226 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 227 /*     if(((surf_action_network_DASSF_t)action)->variable) { */
 228 /*       lmm_variable_disable(maxmin_system, ((surf_action_network_DASSF_t)action)->variable); */
 229 /*       ((surf_action_network_DASSF_t)action)->variable = NULL; */
 230 /*     } */
 231
 232   surf_action_change_state(action, state);
 233   return;
 234 }
 235
 236 static double share_resources(double now)
 237 {
 238   s_surf_action_network_DASSF_t s_action;
 239   surf_action_network_DASSF_t action = NULL;
 240   xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
 241   double min = generic_maxmin_share_resources(running_actions,
 242                                               xbt_swag_offset(s_action, variable));
 243
 244   xbt_swag_foreach(action, running_actions) {
 245     if(action->latency>0) {
 246       if(min<0) min = action->latency;
 247       else if (action->latency<min) min = action->latency;
 248     }
 249   }
 250
 251   return min;
 252 }
 253
 254 static void update_actions_state(double now, double delta)
 255 {
 256   double deltap = 0.0;
 257   surf_action_network_DASSF_t action = NULL;
 258   surf_action_network_DASSF_t next_action = NULL;
 259   xbt_swag_t running_actions =
 260       surf_network_resource->common_public->states.running_action_set;
 261   /* KILLME: unused
 262   xbt_swag_t failed_actions =
 263       surf_network_resource->common_public->states.failed_action_set;
 264   */
 265
 266   xbt_swag_foreach_safe(action, next_action, running_actions) {
 267     deltap = delta;
 268     if (action->latency > 0) {
 269       if (action->latency > deltap) {
 270         surf_double_update(&(action->latency),deltap);
 271         deltap = 0.0;
 272       } else {
 273         surf_double_update(&(deltap), action->latency);
 274         action->latency = 0.0;
 275       }
 276       if ((action->latency == 0.0) && !(action->suspended))
 277         lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
 278     }
 279     surf_double_update(&(action->generic_action.remains),
 280         lmm_variable_getvalue(action->variable) * deltap);
 281     if (action->generic_action.max_duration != NO_MAX_DURATION)
 282       surf_double_update(&(action->generic_action.max_duration), delta);
 283
 284     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 285
 286     if (action->generic_action.remains <= 0) {
 287       action->generic_action.finish = surf_get_clock();
 288       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 289     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 290                (action->generic_action.max_duration <= 0)) {
 291       action->generic_action.finish = surf_get_clock();
 292       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 293     } else {                    /* Need to check that none of the resource has failed */
 294       lmm_constraint_t cnst = NULL;
 295       int i = 0;
 296       network_link_DASSF_t nw_link = NULL;
 297
 298       while ((cnst =
 299               lmm_get_cnst_from_var(maxmin_system, action->variable,
 300                                     i++))) {
 301         nw_link = lmm_constraint_id(cnst);
 302         if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
 303           action->generic_action.finish = surf_get_clock();
 304           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 305           break;
 306         }
 307       }
 308     }
 309   }
 310
 311   return;
 312 }
 313
 314 static void update_resource_state(void *id,
 315                                   tmgr_trace_event_t event_type,
 316                                   double value)
 317 {
 318   network_link_DASSF_t nw_link = id;
 319   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 320   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 321   /*     value, event_type); */
 322
 323   if (event_type == nw_link->bw_event) {
 324     nw_link->bw_current = value;
 325     lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
 326                                 nw_link->bw_current);
 327   } else if (event_type == nw_link->lat_event) {
 328     double delta = value - nw_link->lat_current;
 329     lmm_variable_t var = NULL;
 330     surf_action_network_DASSF_t action = NULL;
 331
 332     nw_link->lat_current = value;
 333     while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
 334       action = lmm_variable_id(var);
 335       action->lat_current += delta;
 336       if(action->rate<0)
 337         lmm_update_variable_bound(maxmin_system, action->variable,
 338                                   SG_TCP_CTE_GAMMA / action->lat_current);
 339       else
 340         lmm_update_variable_bound(maxmin_system, action->variable,
 341                                   min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 342     }
 343   } else if (event_type == nw_link->state_event) {
 344     if (value > 0)
 345       nw_link->state_current = SURF_NETWORK_LINK_ON;
 346     else
 347       nw_link->state_current = SURF_NETWORK_LINK_OFF;
 348   } else {
 349     CRITICAL0("Unknown event ! \n");
 350     xbt_abort();
 351   }
 352
 353   return;
 354 }
 355
 356 static surf_action_t communicate(void *src, void *dst, double size, double rate)
 357 {
 358   surf_action_network_DASSF_t action = NULL;
 359   network_card_DASSF_t card_src = src;
 360   network_card_DASSF_t card_dst = dst;
 361   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 362   network_link_DASSF_t *route = ROUTE(card_src->id, card_dst->id);
 363   int i;
 364
 365   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);
 366
 367   action = xbt_new0(s_surf_action_network_DASSF_t, 1);
 368
 369   action->generic_action.using = 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;
 377
 378   action->generic_action.state_set =
 379       surf_network_resource->common_public->states.running_action_set;
 380
 381   xbt_swag_insert(action, action->generic_action.state_set);
 382   action->rate = rate;
 383
 384   action->latency = 0.0;
 385   for (i = 0; i < route_size; i++)
 386     action->latency += route[i]->lat_current;
 387   action->lat_current = action->latency;
 388
 389   if(action->latency>0)
 390     action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
 391                                         route_size);
 392   else
 393     action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
 394                                         route_size);
 395
 396   if(action->rate<0)
 397     lmm_update_variable_bound(maxmin_system, action->variable,
 398                               SG_TCP_CTE_GAMMA / action->lat_current);
 399   else
 400     lmm_update_variable_bound(maxmin_system, action->variable,
 401                               min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 402
 403   if(route_size == 0) {
 404     action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 405   }
 406
 407   for (i = 0; i < route_size; i++)
 408     lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
 409
 410   return (surf_action_t) action;
 411 }
 412
 413 static void action_suspend(surf_action_t action)
 414 {
 415   ((surf_action_network_DASSF_t) action)->suspended = 1;
 416   lmm_update_variable_weight(maxmin_system,
 417                              ((surf_action_network_DASSF_t) action)->variable, 0.0);
 418 }
 419
 420 static void action_resume(surf_action_t action)
 421 {
 422   lmm_update_variable_weight(maxmin_system,
 423                              ((surf_action_network_DASSF_t) action)->variable, 1.0);
 424   ((surf_action_network_DASSF_t) action)->suspended = 0;
 425 }
 426
 427 static int action_is_suspended(surf_action_t action)
 428 {
 429   return ((surf_action_network_DASSF_t) action)->suspended;
 430 }
 431
 432 static void finalize(void)
 433 {
 434   int i,j;
 435
 436   xbt_dict_free(&network_card_set);
 437   xbt_dict_free(&network_link_set);
 438   xbt_swag_free(surf_network_resource->common_public->states.
 439                 ready_action_set);
 440   xbt_swag_free(surf_network_resource->common_public->states.
 441                 running_action_set);
 442   xbt_swag_free(surf_network_resource->common_public->states.
 443                 failed_action_set);
 444   xbt_swag_free(surf_network_resource->common_public->states.
 445                 done_action_set);
 446   free(surf_network_resource->common_public);
 447   free(surf_network_resource->common_private);
 448   free(surf_network_resource->extension_public);
 449
 450   free(surf_network_resource);
 451   surf_network_resource = NULL;
 452
 453   for (i = 0; i < card_number; i++)
 454     for (j = 0; j < card_number; j++)
 455       free(ROUTE(i,j));
 456   free(routing_table);
 457   routing_table = NULL;
 458   free(routing_table_size);
 459   routing_table_size = NULL;
 460   card_number = 0;
 461 }
 462
 463 static void surf_network_resource_init_internal(void)
 464 {
 465   s_surf_action_t action;
 466
 467   surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
 468
 469   surf_network_resource->common_private =
 470       xbt_new0(s_surf_resource_private_t, 1);
 471   surf_network_resource->common_public =
 472       xbt_new0(s_surf_resource_public_t, 1);
 473   surf_network_resource->extension_public =
 474       xbt_new0(s_surf_network_resource_extension_public_t, 1);
 475
 476   surf_network_resource->common_public->states.ready_action_set =
 477       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 478   surf_network_resource->common_public->states.running_action_set =
 479       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 480   surf_network_resource->common_public->states.failed_action_set =
 481       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 482   surf_network_resource->common_public->states.done_action_set =
 483       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 484
 485   surf_network_resource->common_public->name_service = name_service;
 486   surf_network_resource->common_public->get_resource_name =
 487       get_resource_name;
 488   surf_network_resource->common_public->action_get_state =
 489       surf_action_get_state;
 490   surf_network_resource->common_public->action_free = action_free;
 491   surf_network_resource->common_public->action_cancel = action_cancel;
 492   surf_network_resource->common_public->action_recycle = action_recycle;
 493   surf_network_resource->common_public->action_change_state =
 494       action_change_state;
 495   surf_network_resource->common_public->action_set_data = surf_action_set_data;
 496   surf_network_resource->common_public->name = "network";
 497
 498   surf_network_resource->common_private->resource_used = resource_used;
 499   surf_network_resource->common_private->share_resources = share_resources;
 500   surf_network_resource->common_private->update_actions_state =
 501       update_actions_state;
 502   surf_network_resource->common_private->update_resource_state =
 503       update_resource_state;
 504   surf_network_resource->common_private->finalize = finalize;
 505
 506   surf_network_resource->common_public->suspend = action_suspend;
 507   surf_network_resource->common_public->resume = action_resume;
 508   surf_network_resource->common_public->is_suspended = action_is_suspended;
 509
 510   surf_network_resource->extension_public->communicate = communicate;
 511
 512   network_link_set = xbt_dict_new();
 513   network_card_set = xbt_dict_new();
 514
 515   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 516 }
 517
 518 /***************************************************************************/
 519 /* The nice Hack by Henri to use DASSF from within SURF !                  */
 520 /***************************************************************************/
 521 /* I put this prototype here for now but it will have to go in
 522    src/include/surf.h when it will be functionnal. */
 523 void surf_network_resource_init_DASSF(const char *filename);
 524
 525 void surf_network_resource_init_DASSF(const char *filename)
 526 {
 527   if (surf_network_resource)
 528     return;
 529   surf_network_resource_init_internal();
 530   parse_file(filename);
 531   xbt_dynar_push(resource_list, &surf_network_resource);
 532 }