src/surf/cpu_im.c

   1 /* Copyright (c) 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "surf_private.h"
   8
   9 #undef GENERIC_LMM_ACTION
  10 #undef GENERIC_ACTION
  11 #undef ACTION_GET_CPU
  12 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  13 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  14 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_im_t) action)->cpu
  15
  16 typedef struct surf_action_cpu_cas01_im {
  17   s_surf_action_lmm_t generic_lmm_action;
  18   s_xbt_swag_hookup_t cpu_list_hookup;
  19   int index_heap;
  20   void *cpu;
  21 } s_surf_action_cpu_Cas01_im_t, *surf_action_cpu_Cas01_im_t;
  22
  23 typedef struct cpu_Cas01_im {
  24   s_surf_resource_t generic_resource;
  25   s_xbt_swag_hookup_t modified_cpu_hookup;
  26   double power_peak;
  27   double power_scale;
  28   tmgr_trace_event_t power_event;
  29   e_surf_resource_state_t state_current;
  30   tmgr_trace_event_t state_event;
  31   lmm_constraint_t constraint;
  32   xbt_swag_t action_set;
  33   double last_update;
  34 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
  35
  36 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
  37                                 "Logging specific to the SURF CPU IMPROVED module");
  38
  39
  40 lmm_system_t cpu_im_maxmin_system = NULL;
  41 static xbt_swag_t cpu_im_modified_cpu = NULL;
  42 static xbt_heap_t cpu_im_action_heap = NULL;
  43 extern int sg_maxmin_selective_update;
  44
  45
  46 static xbt_swag_t
  47     cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
  48
  49 static cpu_Cas01_im_t cpu_im_new(char *name, double power_peak,
  50                                  double power_scale,
  51                                  tmgr_trace_t power_trace,
  52                                  e_surf_resource_state_t state_initial,
  53                                  tmgr_trace_t state_trace,
  54                                  xbt_dict_t cpu_properties)
  55 {
  56   cpu_Cas01_im_t cpu = NULL;
  57   s_surf_action_cpu_Cas01_im_t action;
  58   cpu = xbt_new0(s_cpu_Cas01_im_t, 1);
  59
  60 #ifdef HAVE_TRACING
  61   TRACE_surf_host_declaration(name, power_scale * power_peak);
  62 #endif
  63
  64   xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
  65               "Host '%s' declared several times in the platform file",
  66               name);
  67   cpu->generic_resource.model = surf_cpu_model;
  68   cpu->generic_resource.name = name;
  69   cpu->generic_resource.properties = cpu_properties;
  70   cpu->power_peak = power_peak;
  71   xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
  72   cpu->power_scale = power_scale;
  73   if (power_trace)
  74     cpu->power_event =
  75         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  76
  77   cpu->state_current = state_initial;
  78   if (state_trace)
  79     cpu->state_event =
  80         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  81
  82   cpu->constraint =
  83       lmm_constraint_new(cpu_im_maxmin_system, cpu,
  84                          cpu->power_scale * cpu->power_peak);
  85
  86   xbt_dict_set(surf_model_resource_set(surf_cpu_model), name, cpu,
  87                surf_resource_free);
  88   cpu->action_set = xbt_swag_new(xbt_swag_offset(action, cpu_list_hookup));
  89
  90   return cpu;
  91 }
  92
  93
  94 static void parse_cpu_im_init(void)
  95 {
  96   double power_peak = 0.0;
  97   double power_scale = 0.0;
  98   tmgr_trace_t power_trace = NULL;
  99   e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
 100   tmgr_trace_t state_trace = NULL;
 101
 102   power_peak = get_cpu_power(A_surfxml_host_power);
 103   surf_parse_get_double(&power_scale, A_surfxml_host_availability);
 104   power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
 105
 106   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
 107               (A_surfxml_host_state == A_surfxml_host_state_OFF),
 108               "Invalid state");
 109   if (A_surfxml_host_state == A_surfxml_host_state_ON)
 110     state_initial = SURF_RESOURCE_ON;
 111   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
 112     state_initial = SURF_RESOURCE_OFF;
 113   state_trace = tmgr_trace_new(A_surfxml_host_state_file);
 114
 115   current_property_set = xbt_dict_new();
 116   cpu_im_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
 117              power_trace, state_initial, state_trace,
 118              current_property_set);
 119
 120 }
 121
 122 static void cpu_im_add_traces_cpu(void)
 123 {
 124   xbt_dict_cursor_t cursor = NULL;
 125   char *trace_name, *elm;
 126   static int called = 0;
 127   if (called)
 128     return;
 129   called = 1;
 130
 131   /* connect all traces relative to hosts */
 132   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 133     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 134     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 135
 136     xbt_assert1(host, "Host %s undefined", elm);
 137     xbt_assert1(trace, "Trace %s undefined", trace_name);
 138
 139     host->state_event =
 140         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 141   }
 142
 143   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 144     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 145     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 146
 147     xbt_assert1(host, "Host %s undefined", elm);
 148     xbt_assert1(trace, "Trace %s undefined", trace_name);
 149
 150     host->power_event =
 151         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 152   }
 153 }
 154
 155 static void cpu_im_define_callbacks(const char *file)
 156 {
 157
 158   surf_parse_reset_parser();
 159   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_im_init);
 160   surfxml_add_callback(ETag_surfxml_platform_cb_list,
 161                        &cpu_im_add_traces_cpu);
 162 }
 163
 164 static int cpu_im_resource_used(void *resource_id)
 165 {
 166   return lmm_constraint_used(cpu_im_maxmin_system,
 167                              ((cpu_Cas01_im_t) resource_id)->constraint);
 168 }
 169
 170 static int cpu_im_action_unref(surf_action_t action)
 171 {
 172   action->refcount--;
 173   if (!action->refcount) {
 174     xbt_swag_remove(action, action->state_set);
 175     if (((surf_action_lmm_t) action)->variable)
 176       lmm_variable_free(cpu_im_maxmin_system,
 177                         ((surf_action_lmm_t) action)->variable);
 178     /* remove from heap */
 179     xbt_heap_remove(cpu_im_action_heap,
 180                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 181     xbt_swag_remove(action,
 182                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 183     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 184 #ifdef HAVE_TRACING
 185     if (action->category)
 186       xbt_free(action->category);
 187 #endif
 188     free(action);
 189     return 1;
 190   }
 191   return 0;
 192 }
 193
 194 static void cpu_im_action_cancel(surf_action_t action)
 195 {
 196   surf_action_state_set(action, SURF_ACTION_FAILED);
 197   xbt_heap_remove(cpu_im_action_heap,
 198                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 199   xbt_swag_remove(action,
 200                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 201   return;
 202 }
 203
 204 static void cpu_im_cpu_action_state_set(surf_action_t action,
 205                                         e_surf_action_state_t state)
 206 {
 207 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 208 /*     if(((surf_action_lmm_t)action)->variable) { */
 209 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 210 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 211 /*     } */
 212
 213   surf_action_state_set(action, state);
 214   return;
 215 }
 216
 217 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 218 {
 219   surf_action_cpu_Cas01_im_t action;
 220
 221   if (cpu->last_update >= now)
 222     return;
 223   xbt_swag_foreach(action, cpu->action_set) {
 224     if (GENERIC_ACTION(action).state_set !=
 225         surf_cpu_model->states.running_action_set)
 226       continue;
 227
 228     /* bogus priority, skip it */
 229     if (GENERIC_ACTION(action).priority <= 0)
 230       continue;
 231
 232     if (GENERIC_ACTION(action).remains > 0) {
 233       double_update(&(GENERIC_ACTION(action).remains),
 234                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 235                                           (action).variable) * (now -
 236                                                                 cpu->last_update));
 237 #ifdef HAVE_TRACING
 238       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 239                                       action->
 240                                       generic_lmm_action.generic_action.
 241                                       data, (surf_action_t) action,
 242                                       lmm_variable_getvalue
 243                                       (GENERIC_LMM_ACTION
 244                                        (action).variable),
 245                                       cpu->last_update,
 246                                       now - cpu->last_update);
 247 #endif
 248       DEBUG2("Update action(%p) remains %lf", action,
 249              GENERIC_ACTION(action).remains);
 250     }
 251   }
 252   cpu->last_update = now;
 253 }
 254
 255 static double cpu_im_share_resources(double now)
 256 {
 257   surf_action_cpu_Cas01_im_t action;
 258   double min;
 259   double value;
 260   cpu_Cas01_im_t cpu, cpu_next;
 261
 262   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 263       cpu_im_update_remains(cpu, now);
 264
 265   lmm_solve(cpu_im_maxmin_system);
 266
 267   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 268     xbt_swag_foreach(action, cpu->action_set) {
 269       if (GENERIC_ACTION(action).state_set !=
 270           surf_cpu_model->states.running_action_set)
 271         continue;
 272
 273       /* bogus priority, skip it */
 274       if (GENERIC_ACTION(action).priority <= 0)
 275         continue;
 276
 277       min = -1;
 278       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 279       if (value > 0) {
 280         if (GENERIC_ACTION(action).remains > 0)
 281           value = GENERIC_ACTION(action).remains / value;
 282         else
 283           value = 0.0;
 284       }
 285       if (value > 0)
 286         min = now + value;
 287
 288       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 289           && (min == -1
 290               || GENERIC_ACTION(action).start +
 291               GENERIC_ACTION(action).max_duration < min))
 292         min =
 293             GENERIC_ACTION(action).start +
 294             GENERIC_ACTION(action).max_duration;
 295
 296       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 297              GENERIC_ACTION(action).start, now + value,
 298              GENERIC_ACTION(action).max_duration);
 299
 300       if (action->index_heap >= 0) {
 301         surf_action_cpu_Cas01_im_t heap_act =
 302             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 303         if (heap_act != action)
 304           DIE_IMPOSSIBLE;
 305       }
 306       if (min != -1) {
 307         xbt_heap_push(cpu_im_action_heap, action, min);
 308         DEBUG2("Insert at heap action(%p) min %lf", action, min);
 309       }
 310     }
 311     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 312   }
 313   return xbt_heap_size(cpu_im_action_heap) >
 314       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 315 }
 316
 317 static void cpu_im_update_actions_state(double now, double delta)
 318 {
 319   surf_action_cpu_Cas01_im_t action;
 320
 321   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 322          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 323     action = xbt_heap_pop(cpu_im_action_heap);
 324     DEBUG1("Action %p: finish", action);
 325     GENERIC_ACTION(action).finish = surf_get_clock();
 326     /* set the remains to 0 due to precision problems when updating the remaining amount */
 327 #ifdef HAVE_TRACING
 328     TRACE_surf_host_set_utilization(((cpu_Cas01_im_t)
 329                                      (action->cpu))->generic_resource.name,
 330                                     action->
 331                                     generic_lmm_action.generic_action.data,
 332                                     (surf_action_t) action,
 333                                     lmm_variable_getvalue
 334                                     (GENERIC_LMM_ACTION(action).variable),
 335                                     ((cpu_Cas01_im_t)
 336                                      (action->cpu))->last_update,
 337                                     now -
 338                                     ((cpu_Cas01_im_t)
 339                                      (action->cpu))->last_update);
 340 #endif
 341     GENERIC_ACTION(action).remains = 0;
 342     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 343     cpu_im_update_remains(action->cpu, surf_get_clock());
 344   }
 345   return;
 346 }
 347
 348 static void cpu_im_update_resource_state(void *id,
 349                                          tmgr_trace_event_t event_type,
 350                                          double value, double date)
 351 {
 352   cpu_Cas01_im_t cpu = id;
 353   if (event_type == cpu->power_event) {
 354     cpu->power_scale = value;
 355     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 356                                 cpu->power_scale * cpu->power_peak);
 357 #ifdef HAVE_TRACING
 358     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 359                               cpu->power_scale * cpu->power_peak);
 360 #endif
 361     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 362     if (tmgr_trace_event_free(event_type))
 363       cpu->power_event = NULL;
 364   } else if (event_type == cpu->state_event) {
 365     if (value > 0)
 366       cpu->state_current = SURF_RESOURCE_ON;
 367     else {
 368       lmm_constraint_t cnst = cpu->constraint;
 369       lmm_variable_t var = NULL;
 370       lmm_element_t elem = NULL;
 371
 372       cpu->state_current = SURF_RESOURCE_OFF;
 373
 374       while ((var =
 375               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 376         surf_action_t action = lmm_variable_id(var);
 377
 378         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 379             surf_action_state_get(action) == SURF_ACTION_READY ||
 380             surf_action_state_get(action) ==
 381             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 382           action->finish = date;
 383           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 384         }
 385       }
 386     }
 387     if (tmgr_trace_event_free(event_type))
 388       cpu->state_event = NULL;
 389   } else {
 390     CRITICAL0("Unknown event ! \n");
 391     xbt_abort();
 392   }
 393
 394   return;
 395 }
 396
 397 static surf_action_t cpu_im_execute(void *cpu, double size)
 398 {
 399   surf_action_cpu_Cas01_im_t action = NULL;
 400   cpu_Cas01_im_t CPU = cpu;
 401
 402   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
 403   action =
 404       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 405                       surf_cpu_model,
 406                       CPU->state_current != SURF_RESOURCE_ON);
 407
 408   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 409                                                    calloc but it seems to help valgrind... */
 410
 411   GENERIC_LMM_ACTION(action).variable =
 412       lmm_variable_new(cpu_im_maxmin_system, action,
 413                        GENERIC_ACTION(action).priority, -1.0, 1);
 414   action->index_heap = -1;
 415   action->cpu = CPU;
 416   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 417   xbt_swag_insert(action, CPU->action_set);
 418   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 419              GENERIC_LMM_ACTION(action).variable, 1.0);
 420   XBT_OUT;
 421   return (surf_action_t) action;
 422 }
 423
 424 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 425 {
 426   surf_action_cpu_Cas01_im_t action = NULL;
 427
 428   if (duration > 0)
 429     duration = MAX(duration, MAXMIN_PRECISION);
 430
 431   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
 432   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 433   GENERIC_ACTION(action).max_duration = duration;
 434   GENERIC_LMM_ACTION(action).suspended = 2;
 435   if (duration == NO_MAX_DURATION) {
 436     /* Move to the *end* of the corresponding action set. This convention
 437        is used to speed up update_resource_state  */
 438     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 439     ((surf_action_t) action)->state_set =
 440         cpu_im_running_action_set_that_does_not_need_being_checked;
 441     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 442   }
 443
 444   lmm_update_variable_weight(cpu_im_maxmin_system,
 445                              GENERIC_LMM_ACTION(action).variable, 0.0);
 446   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 447   XBT_OUT;
 448   return (surf_action_t) action;
 449 }
 450
 451 static void cpu_im_action_suspend(surf_action_t action)
 452 {
 453   XBT_IN1("(%p)", action);
 454   if (((surf_action_lmm_t) action)->suspended != 2) {
 455     lmm_update_variable_weight(cpu_im_maxmin_system,
 456                                ((surf_action_lmm_t) action)->variable,
 457                                0.0);
 458     ((surf_action_lmm_t) action)->suspended = 1;
 459     xbt_heap_remove(cpu_im_action_heap,
 460                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 461     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 462   }
 463   XBT_OUT;
 464 }
 465
 466 static void cpu_im_action_resume(surf_action_t action)
 467 {
 468
 469   XBT_IN1("(%p)", action);
 470   if (((surf_action_lmm_t) action)->suspended != 2) {
 471     lmm_update_variable_weight(cpu_im_maxmin_system,
 472                                ((surf_action_lmm_t) action)->variable,
 473                                action->priority);
 474     ((surf_action_lmm_t) action)->suspended = 0;
 475     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 476   }
 477   XBT_OUT;
 478 }
 479
 480 static int cpu_im_action_is_suspended(surf_action_t action)
 481 {
 482   return (((surf_action_lmm_t) action)->suspended == 1);
 483 }
 484
 485 static void cpu_im_action_set_max_duration(surf_action_t action,
 486                                            double duration)
 487 {
 488   XBT_IN2("(%p,%g)", action, duration);
 489
 490   action->max_duration = duration;
 491   /* insert cpu in modified_cpu set to notice the max duration change */
 492   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 493   XBT_OUT;
 494 }
 495
 496 static void cpu_im_action_set_priority(surf_action_t action,
 497                                        double priority)
 498 {
 499   XBT_IN2("(%p,%g)", action, priority);
 500   action->priority = priority;
 501   lmm_update_variable_weight(cpu_im_maxmin_system,
 502                              ((surf_action_lmm_t) action)->variable,
 503                              priority);
 504
 505   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 506   XBT_OUT;
 507 }
 508
 509 static double cpu_im_action_get_remains(surf_action_t action)
 510 {
 511   XBT_IN1("(%p)", action);
 512   /* update remains before return it */
 513   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 514   return action->remains;
 515   XBT_OUT;
 516 }
 517
 518 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 519 {
 520   return ((cpu_Cas01_im_t) cpu)->state_current;
 521 }
 522
 523 static double cpu_im_get_speed(void *cpu, double load)
 524 {
 525   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 526 }
 527
 528 static double cpu_im_get_available_speed(void *cpu)
 529 {
 530   /* number between 0 and 1 */
 531   return ((cpu_Cas01_im_t) cpu)->power_scale;
 532 }
 533
 534 static void cpu_im_action_update_index_heap(void *action, int i)
 535 {
 536   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 537 }
 538
 539 static void cpu_im_create_resource(char *name, double power_peak,
 540                                    double power_scale,
 541                                    tmgr_trace_t power_trace,
 542                                    e_surf_resource_state_t state_initial,
 543                                    tmgr_trace_t state_trace,
 544                                    xbt_dict_t cpu_properties)
 545 {
 546   cpu_im_new(name, power_peak, power_scale, power_trace,
 547              state_initial, state_trace, cpu_properties);
 548 }
 549
 550 static void cpu_im_finalize(void)
 551 {
 552   void *cpu;
 553   xbt_dict_cursor_t cursor;
 554   char *key;
 555   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
 556                    cpu) {
 557     cpu_Cas01_im_t CPU = cpu;
 558     xbt_swag_free(CPU->action_set);
 559   }
 560
 561   lmm_system_free(cpu_im_maxmin_system);
 562   cpu_im_maxmin_system = NULL;
 563
 564   surf_model_exit(surf_cpu_model);
 565   surf_cpu_model = NULL;
 566
 567   xbt_swag_free
 568       (cpu_im_running_action_set_that_does_not_need_being_checked);
 569   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 570   xbt_heap_free(cpu_im_action_heap);
 571   xbt_swag_free(cpu_im_modified_cpu);
 572 }
 573
 574 static void surf_cpu_im_model_init_internal(void)
 575 {
 576   s_surf_action_t action;
 577   s_cpu_Cas01_im_t cpu;
 578
 579   surf_cpu_model = surf_model_init();
 580
 581   cpu_im_running_action_set_that_does_not_need_being_checked =
 582       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 583
 584   surf_cpu_model->name = "CPU_IM";
 585
 586   surf_cpu_model->action_unref = cpu_im_action_unref;
 587   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 588   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 589
 590   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 591   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 592   surf_cpu_model->model_private->update_actions_state =
 593       cpu_im_update_actions_state;
 594   surf_cpu_model->model_private->update_resource_state =
 595       cpu_im_update_resource_state;
 596   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 597
 598   surf_cpu_model->suspend = cpu_im_action_suspend;
 599   surf_cpu_model->resume = cpu_im_action_resume;
 600   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 601   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 602   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 603   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 604
 605   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 606   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 607
 608   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 609   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 610   surf_cpu_model->extension.cpu.get_available_speed =
 611       cpu_im_get_available_speed;
 612   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 613   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 614
 615   if (!cpu_im_maxmin_system) {
 616     sg_maxmin_selective_update = 1;
 617     cpu_im_maxmin_system = lmm_system_new();
 618   }
 619   cpu_im_action_heap = xbt_heap_new(8, NULL);
 620   xbt_heap_set_update_callback(cpu_im_action_heap,
 621                                cpu_im_action_update_index_heap);
 622   cpu_im_modified_cpu =
 623       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 624 }
 625
 626 /*********************************************************************/
 627 /* Basic sharing model for CPU: that is where all this started... ;) */
 628 /*********************************************************************/
 629 /* @InProceedings{casanova01simgrid, */
 630 /*   author =       "H. Casanova", */
 631 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 632 /*                  and the Grid (CCGrid'01)", */
 633 /*   publisher =    "IEEE Computer Society", */
 634 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 635 /*                  Scheduling", */
 636 /*   year =         "2001", */
 637 /*   month =        may, */
 638 /*   note =         "Available at */
 639 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 640 /* } */
 641 void surf_cpu_model_init_Cas01_im(const char *filename)
 642 {
 643   if (surf_cpu_model)
 644     return;
 645   surf_cpu_im_model_init_internal();
 646   cpu_im_define_callbacks(filename);
 647   xbt_dynar_push(model_list, &surf_cpu_model);
 648 }