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 = NULL;
  82
  83   xbt_dict_get(network_card_set, card_name, (void *) &card);
  84
  85   if (!card) {
  86     card = xbt_new0(s_network_card_DASSF_t, 1);
  87     card->name = xbt_strdup(card_name);
  88     card->id = card_number++;
  89     xbt_dict_set(network_card_set, card_name, card, network_card_free);
  90   }
  91   return card->id;
  92 }
  93
  94 static void route_new(int src_id, int dst_id, char **links, int nb_link)
  95 {
  96   network_link_DASSF_t *link_list = NULL;
  97   int i;
  98
  99   ROUTE_SIZE(src_id, dst_id) = nb_link;
 100   link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_DASSF_t, nb_link));
 101   for (i = 0; i < nb_link; i++) {
 102     xbt_dict_get(network_link_set, links[i], (void *) &(link_list[i]));
 103     free(links[i]);
 104   }
 105   free(links);
 106 }
 107
 108 static void parse_network_link(void)
 109 {
 110   char *name;
 111   double bw_initial;
 112   tmgr_trace_t bw_trace;
 113   double lat_initial;
 114   tmgr_trace_t lat_trace;
 115   e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
 116   tmgr_trace_t state_trace;
 117
 118   name = xbt_strdup(A_network_link_name);
 119   surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
 120   surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
 121   surf_parse_get_double(&lat_initial,A_network_link_latency);
 122   surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
 123
 124   xbt_assert0((A_network_link_state==A_network_link_state_ON)||
 125               (A_network_link_state==A_network_link_state_OFF),
 126               "Invalid state")
 127   if (A_network_link_state==A_network_link_state_ON)
 128     state_initial = SURF_NETWORK_LINK_ON;
 129   if (A_network_link_state==A_network_link_state_OFF)
 130     state_initial = SURF_NETWORK_LINK_OFF;
 131   surf_parse_get_trace(&state_trace,A_network_link_state_file);
 132
 133   network_link_new(name, bw_initial, bw_trace,
 134                    lat_initial, lat_trace, state_initial, state_trace);
 135 }
 136
 137 static int nb_link = 0;
 138 static char **link_name = NULL;
 139 static int src_id = -1;
 140 static int dst_id = -1;
 141
 142 static void parse_route_set_endpoints(void)
 143 {
 144   src_id = network_card_new(A_route_src);
 145   dst_id = network_card_new(A_route_dst);
 146   nb_link = 0;
 147   link_name = NULL;
 148 }
 149
 150 static void parse_route_elem(void)
 151 {
 152   nb_link++;
 153   link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
 154   link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
 155 }
 156
 157 static void parse_route_set_route(void)
 158 {
 159   route_new(src_id, dst_id, link_name, nb_link);
 160 }
 161
 162 static void parse_file(const char *file)
 163 {
 164   /* Figuring out the network links */
 165   surf_parse_reset_parser();
 166   ETag_network_link_fun=parse_network_link;
 167   surf_parse_open(file);
 168   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 169   surf_parse_close();
 170
 171   /* Figuring out the network cards used */
 172   surf_parse_reset_parser();
 173   STag_route_fun=parse_route_set_endpoints;
 174   surf_parse_open(file);
 175   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 176   surf_parse_close();
 177
 178   create_routing_table();
 179
 180   /* Building the routes */
 181   surf_parse_reset_parser();
 182   STag_route_fun=parse_route_set_endpoints;
 183   ETag_route_element_fun=parse_route_elem;
 184   ETag_route_fun=parse_route_set_route;
 185   surf_parse_open(file);
 186   xbt_assert1((!surf_parse()),"Parse error in %s",file);
 187   surf_parse_close();
 188 }
 189
 190 static void *name_service(const char *name)
 191 {
 192   network_card_DASSF_t card = NULL;
 193
 194   xbt_dict_get(network_card_set, name, (void *) &card);
 195
 196   return card;
 197 }
 198
 199 static const char *get_resource_name(void *resource_id)
 200 {
 201   return ((network_card_DASSF_t) resource_id)->name;
 202 }
 203
 204 static int resource_used(void *resource_id)
 205 {
 206   return lmm_constraint_used(maxmin_system,
 207                              ((network_link_DASSF_t) resource_id)->constraint);
 208 }
 209
 210 static int action_free(surf_action_t action)
 211 {
 212   action->using--;
 213   if(!action->using) {
 214     xbt_swag_remove(action, action->state_set);
 215     if(((surf_action_network_DASSF_t)action)->variable)
 216       lmm_variable_free(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
 217     free(action);
 218   }
 219   return 1;
 220 }
 221
 222 static void action_cancel(surf_action_t action)
 223 {
 224   return;
 225 }
 226
 227 static void action_recycle(surf_action_t action)
 228 {
 229   return;
 230 }
 231
 232 static void action_change_state(surf_action_t action,
 233                                 e_surf_action_state_t state)
 234 {
 235 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 236 /*     if(((surf_action_network_DASSF_t)action)->variable) { */
 237 /*       lmm_variable_disable(maxmin_system, ((surf_action_network_DASSF_t)action)->variable); */
 238 /*       ((surf_action_network_DASSF_t)action)->variable = NULL; */
 239 /*     } */
 240
 241   surf_action_change_state(action, state);
 242   return;
 243 }
 244
 245 static double share_resources(double now)
 246 {
 247   s_surf_action_network_DASSF_t s_action;
 248   surf_action_network_DASSF_t action = NULL;
 249   xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
 250   double min = generic_maxmin_share_resources(running_actions,
 251                                               xbt_swag_offset(s_action, variable));
 252
 253   xbt_swag_foreach(action, running_actions) {
 254     if(action->latency>0) {
 255       if(min<0) min = action->latency;
 256       else if (action->latency<min) min = action->latency;
 257     }
 258   }
 259
 260   return min;
 261 }
 262
 263 static void update_actions_state(double now, double delta)
 264 {
 265   double deltap = 0.0;
 266   surf_action_network_DASSF_t action = NULL;
 267   surf_action_network_DASSF_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;
 272
 273   xbt_swag_foreach_safe(action, next_action, running_actions) {
 274     deltap = delta;
 275     if (action->latency > 0) {
 276       if (action->latency > deltap) {
 277         surf_double_update(&(action->latency),deltap);
 278         deltap = 0.0;
 279       } else {
 280         surf_double_update(&(deltap), action->latency);
 281         action->latency = 0.0;
 282       }
 283       if ((action->latency == 0.0) && !(action->suspended))
 284         lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
 285     }
 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);
 290
 291     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 292
 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;
 302       int i = 0;
 303       network_link_DASSF_t nw_link = NULL;
 304
 305       while ((cnst =
 306               lmm_get_cnst_from_var(maxmin_system, action->variable,
 307                                     i++))) {
 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);
 312           break;
 313         }
 314       }
 315     }
 316   }
 317
 318   return;
 319 }
 320
 321 static void update_resource_state(void *id,
 322                                   tmgr_trace_event_t event_type,
 323                                   double value)
 324 {
 325   network_link_DASSF_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); */
 329
 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_DASSF_t action = NULL;
 338
 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       if(action->rate<0)
 344         lmm_update_variable_bound(maxmin_system, action->variable,
 345                                   SG_TCP_CTE_GAMMA / action->lat_current);
 346       else
 347         lmm_update_variable_bound(maxmin_system, action->variable,
 348                                   min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 349     }
 350   } else if (event_type == nw_link->state_event) {
 351     if (value > 0)
 352       nw_link->state_current = SURF_NETWORK_LINK_ON;
 353     else
 354       nw_link->state_current = SURF_NETWORK_LINK_OFF;
 355   } else {
 356     CRITICAL0("Unknown event ! \n");
 357     xbt_abort();
 358   }
 359
 360   return;
 361 }
 362
 363 static surf_action_t communicate(void *src, void *dst, double size, double rate)
 364 {
 365   surf_action_network_DASSF_t action = NULL;
 366   network_card_DASSF_t card_src = src;
 367   network_card_DASSF_t card_dst = dst;
 368   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 369   network_link_DASSF_t *route = ROUTE(card_src->id, card_dst->id);
 370   int i;
 371
 372   action = xbt_new0(s_surf_action_network_DASSF_t, 1);
 373
 374   action->generic_action.using = 1;
 375   action->generic_action.cost = size;
 376   action->generic_action.remains = size;
 377   action->generic_action.max_duration = NO_MAX_DURATION;
 378   action->generic_action.start = -1.0;
 379   action->generic_action.finish = -1.0;
 380   action->generic_action.resource_type =
 381       (surf_resource_t) surf_network_resource;
 382
 383   action->generic_action.state_set =
 384       surf_network_resource->common_public->states.running_action_set;
 385
 386   xbt_swag_insert(action, action->generic_action.state_set);
 387   action->rate = rate;
 388
 389   action->latency = 0.0;
 390   for (i = 0; i < route_size; i++)
 391     action->latency += route[i]->lat_current;
 392   action->lat_current = action->latency;
 393
 394   if(action->latency>0)
 395     action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
 396                                         route_size);
 397   else
 398     action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
 399                                         route_size);
 400
 401   if(action->rate<0)
 402     lmm_update_variable_bound(maxmin_system, action->variable,
 403                               SG_TCP_CTE_GAMMA / action->lat_current);
 404   else
 405     lmm_update_variable_bound(maxmin_system, action->variable,
 406                               min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 407
 408   if(route_size == 0) {
 409     action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 410   }
 411
 412   for (i = 0; i < route_size; i++)
 413     lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
 414
 415   return (surf_action_t) action;
 416 }
 417
 418 static void action_suspend(surf_action_t action)
 419 {
 420   ((surf_action_network_DASSF_t) action)->suspended = 1;
 421   lmm_update_variable_weight(maxmin_system,
 422                              ((surf_action_network_DASSF_t) action)->variable, 0.0);
 423 }
 424
 425 static void action_resume(surf_action_t action)
 426 {
 427   lmm_update_variable_weight(maxmin_system,
 428                              ((surf_action_network_DASSF_t) action)->variable, 1.0);
 429   ((surf_action_network_DASSF_t) action)->suspended = 0;
 430 }
 431
 432 static int action_is_suspended(surf_action_t action)
 433 {
 434   return ((surf_action_network_DASSF_t) action)->suspended;
 435 }
 436
 437 static void finalize(void)
 438 {
 439   int i,j;
 440
 441   xbt_dict_free(&network_card_set);
 442   xbt_dict_free(&network_link_set);
 443   xbt_swag_free(surf_network_resource->common_public->states.
 444                 ready_action_set);
 445   xbt_swag_free(surf_network_resource->common_public->states.
 446                 running_action_set);
 447   xbt_swag_free(surf_network_resource->common_public->states.
 448                 failed_action_set);
 449   xbt_swag_free(surf_network_resource->common_public->states.
 450                 done_action_set);
 451   free(surf_network_resource->common_public);
 452   free(surf_network_resource->common_private);
 453   free(surf_network_resource->extension_public);
 454
 455   free(surf_network_resource);
 456   surf_network_resource = NULL;
 457
 458   for (i = 0; i < card_number; i++)
 459     for (j = 0; j < card_number; j++)
 460       free(ROUTE(i,j));
 461   free(routing_table);
 462   routing_table = NULL;
 463   free(routing_table_size);
 464   routing_table_size = NULL;
 465   card_number = 0;
 466 }
 467
 468 static void surf_network_resource_init_internal(void)
 469 {
 470   s_surf_action_t action;
 471
 472   surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
 473
 474   surf_network_resource->common_private =
 475       xbt_new0(s_surf_resource_private_t, 1);
 476   surf_network_resource->common_public =
 477       xbt_new0(s_surf_resource_public_t, 1);
 478   surf_network_resource->extension_public =
 479       xbt_new0(s_surf_network_resource_extension_public_t, 1);
 480
 481   surf_network_resource->common_public->states.ready_action_set =
 482       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 483   surf_network_resource->common_public->states.running_action_set =
 484       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 485   surf_network_resource->common_public->states.failed_action_set =
 486       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 487   surf_network_resource->common_public->states.done_action_set =
 488       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 489
 490   surf_network_resource->common_public->name_service = name_service;
 491   surf_network_resource->common_public->get_resource_name =
 492       get_resource_name;
 493   surf_network_resource->common_public->action_get_state =
 494       surf_action_get_state;
 495   surf_network_resource->common_public->action_free = action_free;
 496   surf_network_resource->common_public->action_cancel = action_cancel;
 497   surf_network_resource->common_public->action_recycle = action_recycle;
 498   surf_network_resource->common_public->action_change_state =
 499       action_change_state;
 500   surf_network_resource->common_public->action_set_data = surf_action_set_data;
 501   surf_network_resource->common_public->name = "network";
 502
 503   surf_network_resource->common_private->resource_used = resource_used;
 504   surf_network_resource->common_private->share_resources = share_resources;
 505   surf_network_resource->common_private->update_actions_state =
 506       update_actions_state;
 507   surf_network_resource->common_private->update_resource_state =
 508       update_resource_state;
 509   surf_network_resource->common_private->finalize = finalize;
 510
 511   surf_network_resource->common_public->suspend = action_suspend;
 512   surf_network_resource->common_public->resume = action_resume;
 513   surf_network_resource->common_public->is_suspended = action_is_suspended;
 514
 515   surf_network_resource->extension_public->communicate = communicate;
 516
 517   network_link_set = xbt_dict_new();
 518   network_card_set = xbt_dict_new();
 519
 520   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 521 }
 522
 523 /***************************************************************************/
 524 /* The nice Hack by Henri to use DASSF from within SURF !                  */
 525 /***************************************************************************/
 526 /* I put this prototype here for now but it will have to go in
 527    src/include/surf.h when it will be functionnal. */
 528 void surf_network_resource_init_DASSF(const char *filename);
 529
 530 void surf_network_resource_init_DASSF(const char *filename)
 531 {
 532   if (surf_network_resource)
 533     return;
 534   surf_network_resource_init_internal();
 535   parse_file(filename);
 536   xbt_dynar_push(resource_list, &surf_network_resource);
 537 }