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   int core;
  30   e_surf_resource_state_t state_current;
  31   tmgr_trace_event_t state_event;
  32   lmm_constraint_t constraint;
  33   xbt_swag_t action_set;
  34   double last_update;
  35 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
  36
  37 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
  38                                 "Logging specific to the SURF CPU IMPROVED module");
  39
  40
  41 lmm_system_t cpu_im_maxmin_system = NULL;
  42 static xbt_swag_t cpu_im_modified_cpu = NULL;
  43 static xbt_heap_t cpu_im_action_heap = NULL;
  44 extern int sg_maxmin_selective_update;
  45
  46
  47 static xbt_swag_t
  48     cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
  49
  50 static cpu_Cas01_im_t cpu_im_new(char *name, double power_peak,
  51                                  double power_scale,
  52                                  tmgr_trace_t power_trace,
  53                                  int core,
  54                                  e_surf_resource_state_t state_initial,
  55                                  tmgr_trace_t state_trace,
  56                                  xbt_dict_t cpu_properties)
  57 {
  58   cpu_Cas01_im_t cpu = NULL;
  59   s_surf_action_cpu_Cas01_im_t action;
  60   cpu = xbt_new0(s_cpu_Cas01_im_t, 1);
  61
  62   xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
  63               "Host '%s' declared several times in the platform file",
  64               name);
  65   cpu->generic_resource.model = surf_cpu_model;
  66   cpu->generic_resource.name = name;
  67   cpu->generic_resource.properties = cpu_properties;
  68   cpu->power_peak = power_peak;
  69   xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
  70   cpu->power_scale = power_scale;
  71   if (power_trace)
  72     cpu->power_event =
  73         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  74   cpu->core = core;
  75   xbt_assert1(core>0,"Invalid number of cores %d",core);
  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->core * 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   int core = 0;
  99   tmgr_trace_t power_trace = NULL;
 100   e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
 101   tmgr_trace_t state_trace = NULL;
 102
 103   power_peak = get_cpu_power(A_surfxml_host_power);
 104   surf_parse_get_double(&power_scale, A_surfxml_host_availability);
 105   power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
 106   surf_parse_get_int(&core, A_surfxml_host_core);
 107
 108   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
 109               (A_surfxml_host_state == A_surfxml_host_state_OFF),
 110               "Invalid state");
 111   if (A_surfxml_host_state == A_surfxml_host_state_ON)
 112     state_initial = SURF_RESOURCE_ON;
 113   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
 114     state_initial = SURF_RESOURCE_OFF;
 115   state_trace = tmgr_trace_new(A_surfxml_host_state_file);
 116
 117   current_property_set = xbt_dict_new();
 118   cpu_im_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
 119              power_trace, core, state_initial, state_trace,
 120              current_property_set);
 121
 122 }
 123
 124 static void cpu_im_add_traces_cpu(void)
 125 {
 126   xbt_dict_cursor_t cursor = NULL;
 127   char *trace_name, *elm;
 128   static int called = 0;
 129   if (called)
 130     return;
 131   called = 1;
 132
 133   /* connect all traces relative to hosts */
 134   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 135     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 136     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 137
 138     xbt_assert1(host, "Host %s undefined", elm);
 139     xbt_assert1(trace, "Trace %s undefined", trace_name);
 140
 141     host->state_event =
 142         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 143   }
 144
 145   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 146     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 147     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 148
 149     xbt_assert1(host, "Host %s undefined", elm);
 150     xbt_assert1(trace, "Trace %s undefined", trace_name);
 151
 152     host->power_event =
 153         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 154   }
 155 }
 156
 157 static void cpu_im_define_callbacks(const char *file)
 158 {
 159
 160   surf_parse_reset_parser();
 161   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_im_init);
 162   surfxml_add_callback(ETag_surfxml_platform_cb_list,
 163                        &cpu_im_add_traces_cpu);
 164 }
 165
 166 static int cpu_im_resource_used(void *resource_id)
 167 {
 168   return lmm_constraint_used(cpu_im_maxmin_system,
 169                              ((cpu_Cas01_im_t) resource_id)->constraint);
 170 }
 171
 172 static int cpu_im_action_unref(surf_action_t action)
 173 {
 174   action->refcount--;
 175   if (!action->refcount) {
 176     xbt_swag_remove(action, action->state_set);
 177     if (((surf_action_lmm_t) action)->variable)
 178       lmm_variable_free(cpu_im_maxmin_system,
 179                         ((surf_action_lmm_t) action)->variable);
 180     /* remove from heap */
 181     xbt_heap_remove(cpu_im_action_heap,
 182                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 183     xbt_swag_remove(action,
 184                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 185     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 186 #ifdef HAVE_TRACING
 187     if (action->category)
 188       xbt_free(action->category);
 189 #endif
 190     free(action);
 191     return 1;
 192   }
 193   return 0;
 194 }
 195
 196 static void cpu_im_action_cancel(surf_action_t action)
 197 {
 198   surf_action_state_set(action, SURF_ACTION_FAILED);
 199   xbt_heap_remove(cpu_im_action_heap,
 200                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 201   xbt_swag_remove(action,
 202                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 203   return;
 204 }
 205
 206 static void cpu_im_cpu_action_state_set(surf_action_t action,
 207                                         e_surf_action_state_t state)
 208 {
 209 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 210 /*     if(((surf_action_lmm_t)action)->variable) { */
 211 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 212 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 213 /*     } */
 214
 215   surf_action_state_set(action, state);
 216   return;
 217 }
 218
 219 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 220 {
 221   surf_action_cpu_Cas01_im_t action;
 222
 223   if (cpu->last_update >= now)
 224     return;
 225   xbt_swag_foreach(action, cpu->action_set) {
 226     if (GENERIC_ACTION(action).state_set !=
 227         surf_cpu_model->states.running_action_set)
 228       continue;
 229
 230     /* bogus priority, skip it */
 231     if (GENERIC_ACTION(action).priority <= 0)
 232       continue;
 233
 234     if (GENERIC_ACTION(action).remains > 0) {
 235       double_update(&(GENERIC_ACTION(action).remains),
 236                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 237                                           (action).variable) * (now -
 238                                                                 cpu->last_update));
 239 #ifdef HAVE_TRACING
 240       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 241                                       action->
 242                                       generic_lmm_action.generic_action.
 243                                       data, (surf_action_t) action,
 244                                       lmm_variable_getvalue
 245                                       (GENERIC_LMM_ACTION
 246                                        (action).variable),
 247                                       cpu->last_update,
 248                                       now - cpu->last_update);
 249 #endif
 250       DEBUG2("Update action(%p) remains %lf", action,
 251              GENERIC_ACTION(action).remains);
 252     }
 253   }
 254   cpu->last_update = now;
 255 }
 256
 257 static double cpu_im_share_resources(double now)
 258 {
 259   surf_action_cpu_Cas01_im_t action;
 260   double min;
 261   double value;
 262   cpu_Cas01_im_t cpu, cpu_next;
 263
 264   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 265       cpu_im_update_remains(cpu, now);
 266
 267   lmm_solve(cpu_im_maxmin_system);
 268
 269   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 270     xbt_swag_foreach(action, cpu->action_set) {
 271       if (GENERIC_ACTION(action).state_set !=
 272           surf_cpu_model->states.running_action_set)
 273         continue;
 274
 275       /* bogus priority, skip it */
 276       if (GENERIC_ACTION(action).priority <= 0)
 277         continue;
 278
 279       min = -1;
 280       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 281       if (value > 0) {
 282         if (GENERIC_ACTION(action).remains > 0) {
 283           value = GENERIC_ACTION(action).remains / value;
 284           min = now + value;
 285         } else {
 286           value = 0.0;
 287           min = now;
 288         }
 289       }
 290
 291       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 292           && (min == -1
 293               || GENERIC_ACTION(action).start +
 294               GENERIC_ACTION(action).max_duration < min))
 295         min =
 296             GENERIC_ACTION(action).start +
 297             GENERIC_ACTION(action).max_duration;
 298
 299       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 300              GENERIC_ACTION(action).start, now + value,
 301              GENERIC_ACTION(action).max_duration);
 302
 303       if (action->index_heap >= 0) {
 304         surf_action_cpu_Cas01_im_t heap_act =
 305             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 306         if (heap_act != action)
 307           DIE_IMPOSSIBLE;
 308       }
 309       if (min != -1) {
 310         xbt_heap_push(cpu_im_action_heap, action, min);
 311         DEBUG2("Insert at heap action(%p) min %lf", action, min);
 312       }
 313     }
 314     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 315   }
 316   return xbt_heap_size(cpu_im_action_heap) >
 317       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 318 }
 319
 320 static void cpu_im_update_actions_state(double now, double delta)
 321 {
 322   surf_action_cpu_Cas01_im_t action;
 323
 324   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 325          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 326     action = xbt_heap_pop(cpu_im_action_heap);
 327     DEBUG1("Action %p: finish", action);
 328     GENERIC_ACTION(action).finish = surf_get_clock();
 329     /* set the remains to 0 due to precision problems when updating the remaining amount */
 330 #ifdef HAVE_TRACING
 331     TRACE_surf_host_set_utilization(((cpu_Cas01_im_t)
 332                                      (action->cpu))->generic_resource.name,
 333                                     action->
 334                                     generic_lmm_action.generic_action.data,
 335                                     (surf_action_t) action,
 336                                     lmm_variable_getvalue
 337                                     (GENERIC_LMM_ACTION(action).variable),
 338                                     ((cpu_Cas01_im_t)
 339                                      (action->cpu))->last_update,
 340                                     now -
 341                                     ((cpu_Cas01_im_t)
 342                                      (action->cpu))->last_update);
 343 #endif
 344     GENERIC_ACTION(action).remains = 0;
 345     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 346     cpu_im_update_remains(action->cpu, surf_get_clock());
 347   }
 348   return;
 349 }
 350
 351 static void cpu_im_update_resource_state(void *id,
 352                                          tmgr_trace_event_t event_type,
 353                                          double value, double date)
 354 {
 355   cpu_Cas01_im_t cpu = id;
 356   lmm_variable_t var = NULL;
 357   lmm_element_t elem = NULL;
 358
 359   if (event_type == cpu->power_event) {
 360     cpu->power_scale = value;
 361     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 362                                 cpu->core * cpu->power_scale * cpu->power_peak);
 363 #ifdef HAVE_TRACING
 364     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 365                               cpu->core * cpu->power_scale * cpu->power_peak);
 366 #endif
 367     while ((var = lmm_get_var_from_cnst
 368             (cpu_im_maxmin_system, cpu->constraint, &elem))) {
 369         surf_action_cpu_Cas01_im_t action = lmm_variable_id(var);
 370         lmm_update_variable_bound(cpu_im_maxmin_system, action->generic_lmm_action.variable,
 371                                   cpu->power_scale * cpu->power_peak);
 372     }
 373     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 374     if (tmgr_trace_event_free(event_type))
 375       cpu->power_event = NULL;
 376   } else if (event_type == cpu->state_event) {
 377     if (value > 0)
 378       cpu->state_current = SURF_RESOURCE_ON;
 379     else {
 380       lmm_constraint_t cnst = cpu->constraint;
 381       lmm_variable_t var = NULL;
 382       lmm_element_t elem = NULL;
 383
 384       cpu->state_current = SURF_RESOURCE_OFF;
 385
 386       while ((var =
 387               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 388         surf_action_t action = lmm_variable_id(var);
 389
 390         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 391             surf_action_state_get(action) == SURF_ACTION_READY ||
 392             surf_action_state_get(action) ==
 393             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 394           action->finish = date;
 395           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 396         }
 397       }
 398     }
 399     if (tmgr_trace_event_free(event_type))
 400       cpu->state_event = NULL;
 401   } else {
 402     CRITICAL0("Unknown event ! \n");
 403     xbt_abort();
 404   }
 405
 406   return;
 407 }
 408
 409 static surf_action_t cpu_im_execute(void *cpu, double size)
 410 {
 411   surf_action_cpu_Cas01_im_t action = NULL;
 412   cpu_Cas01_im_t CPU = cpu;
 413
 414   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
 415   action =
 416       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 417                       surf_cpu_model,
 418                       CPU->state_current != SURF_RESOURCE_ON);
 419
 420   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 421                                                    calloc but it seems to help valgrind... */
 422
 423   GENERIC_LMM_ACTION(action).variable =
 424       lmm_variable_new(cpu_im_maxmin_system, action,
 425                        GENERIC_ACTION(action).priority, CPU->power_scale * CPU->power_peak, 1);
 426   action->index_heap = -1;
 427   action->cpu = CPU;
 428   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 429   xbt_swag_insert(action, CPU->action_set);
 430   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 431              GENERIC_LMM_ACTION(action).variable, 1.0);
 432   XBT_OUT;
 433   return (surf_action_t) action;
 434 }
 435
 436 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 437 {
 438   surf_action_cpu_Cas01_im_t action = NULL;
 439
 440   if (duration > 0)
 441     duration = MAX(duration, MAXMIN_PRECISION);
 442
 443   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
 444   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 445   GENERIC_ACTION(action).max_duration = duration;
 446   GENERIC_LMM_ACTION(action).suspended = 2;
 447   if (duration == NO_MAX_DURATION) {
 448     /* Move to the *end* of the corresponding action set. This convention
 449        is used to speed up update_resource_state  */
 450     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 451     ((surf_action_t) action)->state_set =
 452         cpu_im_running_action_set_that_does_not_need_being_checked;
 453     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 454   }
 455
 456   lmm_update_variable_weight(cpu_im_maxmin_system,
 457                              GENERIC_LMM_ACTION(action).variable, 0.0);
 458   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 459   XBT_OUT;
 460   return (surf_action_t) action;
 461 }
 462
 463 static void cpu_im_action_suspend(surf_action_t action)
 464 {
 465   XBT_IN1("(%p)", action);
 466   if (((surf_action_lmm_t) action)->suspended != 2) {
 467     lmm_update_variable_weight(cpu_im_maxmin_system,
 468                                ((surf_action_lmm_t) action)->variable,
 469                                0.0);
 470     ((surf_action_lmm_t) action)->suspended = 1;
 471     xbt_heap_remove(cpu_im_action_heap,
 472                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 473     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 474   }
 475   XBT_OUT;
 476 }
 477
 478 static void cpu_im_action_resume(surf_action_t action)
 479 {
 480
 481   XBT_IN1("(%p)", action);
 482   if (((surf_action_lmm_t) action)->suspended != 2) {
 483     lmm_update_variable_weight(cpu_im_maxmin_system,
 484                                ((surf_action_lmm_t) action)->variable,
 485                                action->priority);
 486     ((surf_action_lmm_t) action)->suspended = 0;
 487     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 488   }
 489   XBT_OUT;
 490 }
 491
 492 static int cpu_im_action_is_suspended(surf_action_t action)
 493 {
 494   return (((surf_action_lmm_t) action)->suspended == 1);
 495 }
 496
 497 static void cpu_im_action_set_max_duration(surf_action_t action,
 498                                            double duration)
 499 {
 500   XBT_IN2("(%p,%g)", action, duration);
 501
 502   action->max_duration = duration;
 503   /* insert cpu in modified_cpu set to notice the max duration change */
 504   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 505   XBT_OUT;
 506 }
 507
 508 static void cpu_im_action_set_priority(surf_action_t action,
 509                                        double priority)
 510 {
 511   XBT_IN2("(%p,%g)", action, priority);
 512   action->priority = priority;
 513   lmm_update_variable_weight(cpu_im_maxmin_system,
 514                              ((surf_action_lmm_t) action)->variable,
 515                              priority);
 516
 517   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 518   XBT_OUT;
 519 }
 520
 521 #ifdef HAVE_TRACING
 522 static void cpu_im_action_set_category(surf_action_t action,
 523                                        const char *category)
 524 {
 525   XBT_IN2("(%p,%s)", action, category);
 526   action->category = xbt_strdup (category);
 527   XBT_OUT;
 528 }
 529 #endif
 530
 531 static double cpu_im_action_get_remains(surf_action_t action)
 532 {
 533   XBT_IN1("(%p)", action);
 534   /* update remains before return it */
 535   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 536   return action->remains;
 537   XBT_OUT;
 538 }
 539
 540 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 541 {
 542   return ((cpu_Cas01_im_t) cpu)->state_current;
 543 }
 544
 545 static double cpu_im_get_speed(void *cpu, double load)
 546 {
 547   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 548 }
 549
 550 static double cpu_im_get_available_speed(void *cpu)
 551 {
 552   /* number between 0 and 1 */
 553   return ((cpu_Cas01_im_t) cpu)->power_scale;
 554 }
 555
 556 static void cpu_im_action_update_index_heap(void *action, int i)
 557 {
 558   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 559 }
 560
 561 static void cpu_im_create_resource(char *name, double power_peak,
 562                                    double power_scale,
 563                                    tmgr_trace_t power_trace,
 564                                    int core,
 565                                    e_surf_resource_state_t state_initial,
 566                                    tmgr_trace_t state_trace,
 567                                    xbt_dict_t cpu_properties)
 568 {
 569   cpu_im_new(name, power_peak, power_scale, power_trace, core,
 570              state_initial, state_trace, cpu_properties);
 571 }
 572
 573 static void cpu_im_finalize(void)
 574 {
 575   void *cpu;
 576   xbt_dict_cursor_t cursor;
 577   char *key;
 578   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
 579                    cpu) {
 580     cpu_Cas01_im_t CPU = cpu;
 581     xbt_swag_free(CPU->action_set);
 582   }
 583
 584   lmm_system_free(cpu_im_maxmin_system);
 585   cpu_im_maxmin_system = NULL;
 586
 587   surf_model_exit(surf_cpu_model);
 588   surf_cpu_model = NULL;
 589
 590   xbt_swag_free
 591       (cpu_im_running_action_set_that_does_not_need_being_checked);
 592   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 593   xbt_heap_free(cpu_im_action_heap);
 594   xbt_swag_free(cpu_im_modified_cpu);
 595 }
 596
 597 static void surf_cpu_im_model_init_internal(void)
 598 {
 599   s_surf_action_t action;
 600   s_cpu_Cas01_im_t cpu;
 601
 602   surf_cpu_model = surf_model_init();
 603
 604   cpu_im_running_action_set_that_does_not_need_being_checked =
 605       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 606
 607   surf_cpu_model->name = "CPU_IM";
 608
 609   surf_cpu_model->action_unref = cpu_im_action_unref;
 610   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 611   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 612
 613   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 614   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 615   surf_cpu_model->model_private->update_actions_state =
 616       cpu_im_update_actions_state;
 617   surf_cpu_model->model_private->update_resource_state =
 618       cpu_im_update_resource_state;
 619   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 620
 621   surf_cpu_model->suspend = cpu_im_action_suspend;
 622   surf_cpu_model->resume = cpu_im_action_resume;
 623   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 624   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 625   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 626 #ifdef HAVE_TRACING
 627   surf_cpu_model->set_category = cpu_im_action_set_category;
 628 #endif
 629   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 630
 631   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 632   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 633
 634   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 635   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 636   surf_cpu_model->extension.cpu.get_available_speed =
 637       cpu_im_get_available_speed;
 638   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 639   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 640
 641   if (!cpu_im_maxmin_system) {
 642     sg_maxmin_selective_update = 1;
 643     cpu_im_maxmin_system = lmm_system_new();
 644   }
 645   cpu_im_action_heap = xbt_heap_new(8, NULL);
 646   xbt_heap_set_update_callback(cpu_im_action_heap,
 647                                cpu_im_action_update_index_heap);
 648   cpu_im_modified_cpu =
 649       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 650 }
 651
 652 /*********************************************************************/
 653 /* Basic sharing model for CPU: that is where all this started... ;) */
 654 /*********************************************************************/
 655 /* @InProceedings{casanova01simgrid, */
 656 /*   author =       "H. Casanova", */
 657 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 658 /*                  and the Grid (CCGrid'01)", */
 659 /*   publisher =    "IEEE Computer Society", */
 660 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 661 /*                  Scheduling", */
 662 /*   year =         "2001", */
 663 /*   month =        may, */
 664 /*   note =         "Available at */
 665 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 666 /* } */
 667 void surf_cpu_model_init_Cas01_im(const char *filename)
 668 {
 669   if (surf_cpu_model)
 670     return;
 671   surf_cpu_im_model_init_internal();
 672   cpu_im_define_callbacks(filename);
 673   xbt_dynar_push(model_list, &surf_cpu_model);
 674 }