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 void action_free(surf_action_t action)
 211 {
 212   xbt_swag_remove(action, action->state_set);
 213   if(((surf_action_network_DASSF_t)action)->variable)
 214     lmm_variable_free(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
 215   free(action);
 216
 217   return;
 218 }
 219
 220 static void action_cancel(surf_action_t action)
 221 {
 222   return;
 223 }
 224
 225 static void action_recycle(surf_action_t action)
 226 {
 227   return;
 228 }
 229
 230 static void action_change_state(surf_action_t action,
 231                                 e_surf_action_state_t state)
 232 {
 233   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED))
 234     if(((surf_action_network_DASSF_t)action)->variable) {
 235       lmm_variable_disable(maxmin_system, ((surf_action_network_DASSF_t)action)->variable);
 236       ((surf_action_network_DASSF_t)action)->variable = NULL;
 237     }
 238
 239   surf_action_change_state(action, state);
 240   return;
 241 }
 242
 243 static double share_resources(double now)
 244 {
 245   s_surf_action_network_DASSF_t s_action;
 246   surf_action_network_DASSF_t action = NULL;
 247   xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
 248   double min = generic_maxmin_share_resources(running_actions,
 249                                               xbt_swag_offset(s_action, variable));
 250
 251   xbt_swag_foreach(action, running_actions) {
 252     if(action->latency>0) {
 253       if(min<0) min = action->latency;
 254       else if (action->latency<min) min = action->latency;
 255     }
 256   }
 257
 258   return min;
 259 }
 260
 261 static void update_actions_state(double now, double delta)
 262 {
 263   double deltap = 0.0;
 264   surf_action_network_DASSF_t action = NULL;
 265   surf_action_network_DASSF_t next_action = NULL;
 266   xbt_swag_t running_actions =
 267       surf_network_resource->common_public->states.running_action_set;
 268   xbt_swag_t failed_actions =
 269       surf_network_resource->common_public->states.failed_action_set;
 270
 271   xbt_swag_foreach_safe(action, next_action, running_actions) {
 272     deltap = delta;
 273     if (action->latency > 0) {
 274       if (action->latency > deltap) {
 275         surf_double_update(&(action->latency),deltap);
 276         deltap = 0.0;
 277       } else {
 278         surf_double_update(&(deltap), action->latency);
 279         action->latency = 0.0;
 280       }
 281       if ((action->latency == 0.0) && !(action->suspended))
 282         lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
 283     }
 284     surf_double_update(&(action->generic_action.remains),
 285         lmm_variable_getvalue(action->variable) * deltap);
 286     if (action->generic_action.max_duration != NO_MAX_DURATION)
 287       surf_double_update(&(action->generic_action.max_duration), delta);
 288
 289     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 290
 291     if (action->generic_action.remains <= 0) {
 292       action->generic_action.finish = surf_get_clock();
 293       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 294     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 295                (action->generic_action.max_duration <= 0)) {
 296       action->generic_action.finish = surf_get_clock();
 297       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 298     } else {                    /* Need to check that none of the resource has failed */
 299       lmm_constraint_t cnst = NULL;
 300       int i = 0;
 301       network_link_DASSF_t nw_link = NULL;
 302
 303       while ((cnst =
 304               lmm_get_cnst_from_var(maxmin_system, action->variable,
 305                                     i++))) {
 306         nw_link = lmm_constraint_id(cnst);
 307         if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
 308           action->generic_action.finish = surf_get_clock();
 309           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 310           break;
 311         }
 312       }
 313     }
 314   }
 315
 316   return;
 317 }
 318
 319 static void update_resource_state(void *id,
 320                                   tmgr_trace_event_t event_type,
 321                                   double value)
 322 {
 323   network_link_DASSF_t nw_link = id;
 324   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 325   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 326   /*     value, event_type); */
 327
 328   if (event_type == nw_link->bw_event) {
 329     nw_link->bw_current = value;
 330     lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
 331                                 nw_link->bw_current);
 332   } else if (event_type == nw_link->lat_event) {
 333     double delta = value - nw_link->lat_current;
 334     lmm_variable_t var = NULL;
 335     surf_action_network_DASSF_t action = NULL;
 336
 337     nw_link->lat_current = value;
 338     while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
 339       action = lmm_variable_id(var);
 340       action->lat_current += delta;
 341       if(action->rate<0)
 342         lmm_update_variable_bound(maxmin_system, action->variable,
 343                                   SG_TCP_CTE_GAMMA / action->lat_current);
 344       else
 345         lmm_update_variable_bound(maxmin_system, action->variable,
 346                                   min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 347     }
 348   } else if (event_type == nw_link->state_event) {
 349     if (value > 0)
 350       nw_link->state_current = SURF_NETWORK_LINK_ON;
 351     else
 352       nw_link->state_current = SURF_NETWORK_LINK_OFF;
 353   } else {
 354     CRITICAL0("Unknown event ! \n");
 355     xbt_abort();
 356   }
 357
 358   return;
 359 }
 360
 361 static surf_action_t communicate(void *src, void *dst, double size, double rate)
 362 {
 363   surf_action_network_DASSF_t action = NULL;
 364   network_card_DASSF_t card_src = src;
 365   network_card_DASSF_t card_dst = dst;
 366   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 367   network_link_DASSF_t *route = ROUTE(card_src->id, card_dst->id);
 368   int i;
 369
 370   action = xbt_new0(s_surf_action_network_DASSF_t, 1);
 371
 372   action->generic_action.cost = size;
 373   action->generic_action.remains = size;
 374   action->generic_action.max_duration = NO_MAX_DURATION;
 375   action->generic_action.start = -1.0;
 376   action->generic_action.finish = -1.0;
 377   action->generic_action.resource_type =
 378       (surf_resource_t) surf_network_resource;
 379
 380   action->generic_action.state_set =
 381       surf_network_resource->common_public->states.running_action_set;
 382
 383   xbt_swag_insert(action, action->generic_action.state_set);
 384   action->rate = rate;
 385
 386   action->latency = 0.0;
 387   for (i = 0; i < route_size; i++)
 388     action->latency += route[i]->lat_current;
 389   action->lat_current = action->latency;
 390
 391   if(action->latency>0)
 392     action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
 393                                         route_size);
 394   else
 395     action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
 396                                         route_size);
 397
 398   if(action->rate<0)
 399     lmm_update_variable_bound(maxmin_system, action->variable,
 400                               SG_TCP_CTE_GAMMA / action->lat_current);
 401   else
 402     lmm_update_variable_bound(maxmin_system, action->variable,
 403                               min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
 404
 405   if(route_size == 0) {
 406     action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 407   }
 408
 409   for (i = 0; i < route_size; i++)
 410     lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
 411
 412   return (surf_action_t) action;
 413 }
 414
 415 static void action_suspend(surf_action_t action)
 416 {
 417   ((surf_action_network_DASSF_t) action)->suspended = 1;
 418   lmm_update_variable_weight(maxmin_system,
 419                              ((surf_action_network_DASSF_t) action)->variable, 0.0);
 420 }
 421
 422 static void action_resume(surf_action_t action)
 423 {
 424   lmm_update_variable_weight(maxmin_system,
 425                              ((surf_action_network_DASSF_t) action)->variable, 1.0);
 426   ((surf_action_network_DASSF_t) action)->suspended = 0;
 427 }
 428
 429 static int action_is_suspended(surf_action_t action)
 430 {
 431   return ((surf_action_network_DASSF_t) action)->suspended;
 432 }
 433
 434 static void finalize(void)
 435 {
 436   int i,j;
 437
 438   xbt_dict_free(&network_card_set);
 439   xbt_dict_free(&network_link_set);
 440   xbt_swag_free(surf_network_resource->common_public->states.
 441                 ready_action_set);
 442   xbt_swag_free(surf_network_resource->common_public->states.
 443                 running_action_set);
 444   xbt_swag_free(surf_network_resource->common_public->states.
 445                 failed_action_set);
 446   xbt_swag_free(surf_network_resource->common_public->states.
 447                 done_action_set);
 448   free(surf_network_resource->common_public);
 449   free(surf_network_resource->common_private);
 450   free(surf_network_resource->extension_public);
 451
 452   free(surf_network_resource);
 453   surf_network_resource = NULL;
 454
 455   for (i = 0; i < card_number; i++)
 456     for (j = 0; j < card_number; j++)
 457       free(ROUTE(i,j));
 458   free(routing_table);
 459   routing_table = NULL;
 460   free(routing_table_size);
 461   routing_table_size = NULL;
 462   card_number = 0;
 463 }
 464
 465 static void surf_network_resource_init_internal(void)
 466 {
 467   s_surf_action_t action;
 468
 469   surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
 470
 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_public =
 476       xbt_new0(s_surf_network_resource_extension_public_t, 1);
 477
 478   surf_network_resource->common_public->states.ready_action_set =
 479       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 480   surf_network_resource->common_public->states.running_action_set =
 481       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 482   surf_network_resource->common_public->states.failed_action_set =
 483       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 484   surf_network_resource->common_public->states.done_action_set =
 485       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 486
 487   surf_network_resource->common_public->name_service = name_service;
 488   surf_network_resource->common_public->get_resource_name =
 489       get_resource_name;
 490   surf_network_resource->common_public->action_get_state =
 491       surf_action_get_state;
 492   surf_network_resource->common_public->action_free = action_free;
 493   surf_network_resource->common_public->action_cancel = action_cancel;
 494   surf_network_resource->common_public->action_recycle = action_recycle;
 495   surf_network_resource->common_public->action_change_state =
 496       action_change_state;
 497   surf_network_resource->common_public->action_set_data = surf_action_set_data;
 498   surf_network_resource->common_public->name = "network";
 499
 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;
 507
 508   surf_network_resource->common_public->suspend = action_suspend;
 509   surf_network_resource->common_public->resume = action_resume;
 510   surf_network_resource->common_public->is_suspended = action_is_suspended;
 511
 512   surf_network_resource->extension_public->communicate = communicate;
 513
 514   network_link_set = xbt_dict_new();
 515   network_card_set = xbt_dict_new();
 516
 517   xbt_assert0(maxmin_system, "surf_init has to be called first!");
 518 }
 519
 520 /***************************************************************************/
 521 /* The nice Hack by Henri to use DASSF from within SURF !                  */
 522 /***************************************************************************/
 523 /* I put this prototype here for now but it will have to go in
 524    src/include/surf.h when it will be functionnal. */
 525 void surf_network_resource_init_DASSF(const char *filename);
 526
 527 void surf_network_resource_init_DASSF(const char *filename)
 528 {
 529   if (surf_network_resource)
 530     return;
 531   surf_network_resource_init_internal();
 532   parse_file(filename);
 533   xbt_dynar_push(resource_list, &surf_network_resource);
 534 }