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 #ifdef HAVE_TRACING
  91   TRACE_surf_host_declaration(name, core * power_scale * power_peak);
  92 #endif
  93
  94   return cpu;
  95 }
  96
  97
  98 static void parse_cpu_im_init(void)
  99 {
 100   double power_peak = 0.0;
 101   double power_scale = 0.0;
 102   int core = 0;
 103   tmgr_trace_t power_trace = NULL;
 104   e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
 105   tmgr_trace_t state_trace = NULL;
 106
 107   power_peak = get_cpu_power(A_surfxml_host_power);
 108   surf_parse_get_double(&power_scale, A_surfxml_host_availability);
 109   power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
 110   surf_parse_get_int(&core, A_surfxml_host_core);
 111
 112   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
 113               (A_surfxml_host_state == A_surfxml_host_state_OFF),
 114               "Invalid state");
 115   if (A_surfxml_host_state == A_surfxml_host_state_ON)
 116     state_initial = SURF_RESOURCE_ON;
 117   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
 118     state_initial = SURF_RESOURCE_OFF;
 119   state_trace = tmgr_trace_new(A_surfxml_host_state_file);
 120
 121   current_property_set = xbt_dict_new();
 122   cpu_im_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
 123              power_trace, core, state_initial, state_trace,
 124              current_property_set);
 125
 126 }
 127
 128 static void cpu_im_add_traces_cpu(void)
 129 {
 130   xbt_dict_cursor_t cursor = NULL;
 131   char *trace_name, *elm;
 132   static int called = 0;
 133   if (called)
 134     return;
 135   called = 1;
 136
 137   /* connect all traces relative to hosts */
 138   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 139     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 140     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 141
 142     xbt_assert1(host, "Host %s undefined", elm);
 143     xbt_assert1(trace, "Trace %s undefined", trace_name);
 144
 145     host->state_event =
 146         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 147   }
 148
 149   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 150     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 151     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 152
 153     xbt_assert1(host, "Host %s undefined", elm);
 154     xbt_assert1(trace, "Trace %s undefined", trace_name);
 155
 156     host->power_event =
 157         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 158   }
 159 }
 160
 161 static void cpu_im_define_callbacks(const char *file)
 162 {
 163
 164   surf_parse_reset_parser();
 165   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_im_init);
 166   surfxml_add_callback(ETag_surfxml_platform_cb_list,
 167                        &cpu_im_add_traces_cpu);
 168 }
 169
 170 static int cpu_im_resource_used(void *resource_id)
 171 {
 172   return lmm_constraint_used(cpu_im_maxmin_system,
 173                              ((cpu_Cas01_im_t) resource_id)->constraint);
 174 }
 175
 176 static int cpu_im_action_unref(surf_action_t action)
 177 {
 178   action->refcount--;
 179   if (!action->refcount) {
 180     xbt_swag_remove(action, action->state_set);
 181     if (((surf_action_lmm_t) action)->variable)
 182       lmm_variable_free(cpu_im_maxmin_system,
 183                         ((surf_action_lmm_t) action)->variable);
 184     /* remove from heap */
 185     xbt_heap_remove(cpu_im_action_heap,
 186                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 187     xbt_swag_remove(action,
 188                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 189     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 190 #ifdef HAVE_TRACING
 191     if (action->category)
 192       xbt_free(action->category);
 193 #endif
 194     free(action);
 195     return 1;
 196   }
 197   return 0;
 198 }
 199
 200 static void cpu_im_action_cancel(surf_action_t action)
 201 {
 202   surf_action_state_set(action, SURF_ACTION_FAILED);
 203   xbt_heap_remove(cpu_im_action_heap,
 204                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 205   xbt_swag_remove(action,
 206                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 207   return;
 208 }
 209
 210 static void cpu_im_cpu_action_state_set(surf_action_t action,
 211                                         e_surf_action_state_t state)
 212 {
 213 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 214 /*     if(((surf_action_lmm_t)action)->variable) { */
 215 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 216 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 217 /*     } */
 218
 219   surf_action_state_set(action, state);
 220   return;
 221 }
 222
 223 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 224 {
 225   surf_action_cpu_Cas01_im_t action;
 226
 227   if (cpu->last_update >= now)
 228     return;
 229   xbt_swag_foreach(action, cpu->action_set) {
 230     if (GENERIC_ACTION(action).state_set !=
 231         surf_cpu_model->states.running_action_set)
 232       continue;
 233
 234     /* bogus priority, skip it */
 235     if (GENERIC_ACTION(action).priority <= 0)
 236       continue;
 237
 238     if (GENERIC_ACTION(action).remains > 0) {
 239       double_update(&(GENERIC_ACTION(action).remains),
 240                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 241                                           (action).variable) * (now -
 242                                                                 cpu->last_update));
 243 #ifdef HAVE_TRACING
 244       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 245                                       action->
 246                                       generic_lmm_action.generic_action.
 247                                       data, (surf_action_t) action,
 248                                       lmm_variable_getvalue
 249                                       (GENERIC_LMM_ACTION
 250                                        (action).variable),
 251                                       cpu->last_update,
 252                                       now - cpu->last_update);
 253 #endif
 254       DEBUG2("Update action(%p) remains %lf", action,
 255              GENERIC_ACTION(action).remains);
 256     }
 257   }
 258   cpu->last_update = now;
 259 }
 260
 261 static double cpu_im_share_resources(double now)
 262 {
 263   surf_action_cpu_Cas01_im_t action;
 264   double min;
 265   double value;
 266   cpu_Cas01_im_t cpu, cpu_next;
 267
 268   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 269       cpu_im_update_remains(cpu, now);
 270
 271   lmm_solve(cpu_im_maxmin_system);
 272
 273   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 274     xbt_swag_foreach(action, cpu->action_set) {
 275       if (GENERIC_ACTION(action).state_set !=
 276           surf_cpu_model->states.running_action_set)
 277         continue;
 278
 279       /* bogus priority, skip it */
 280       if (GENERIC_ACTION(action).priority <= 0)
 281         continue;
 282
 283       min = -1;
 284       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 285       if (value > 0) {
 286         if (GENERIC_ACTION(action).remains > 0) {
 287           value = GENERIC_ACTION(action).remains / value;
 288           min = now + value;
 289         } else {
 290           value = 0.0;
 291           min = now;
 292         }
 293       }
 294
 295       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 296           && (min == -1
 297               || GENERIC_ACTION(action).start +
 298               GENERIC_ACTION(action).max_duration < min))
 299         min =
 300             GENERIC_ACTION(action).start +
 301             GENERIC_ACTION(action).max_duration;
 302
 303       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 304              GENERIC_ACTION(action).start, now + value,
 305              GENERIC_ACTION(action).max_duration);
 306
 307       if (action->index_heap >= 0) {
 308         surf_action_cpu_Cas01_im_t heap_act =
 309             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 310         if (heap_act != action)
 311           DIE_IMPOSSIBLE;
 312       }
 313       if (min != -1) {
 314         xbt_heap_push(cpu_im_action_heap, action, min);
 315         DEBUG2("Insert at heap action(%p) min %lf", action, min);
 316       }
 317     }
 318     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 319   }
 320   return xbt_heap_size(cpu_im_action_heap) >
 321       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 322 }
 323
 324 static void cpu_im_update_actions_state(double now, double delta)
 325 {
 326   surf_action_cpu_Cas01_im_t action;
 327
 328   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 329          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 330     action = xbt_heap_pop(cpu_im_action_heap);
 331     DEBUG1("Action %p: finish", action);
 332     GENERIC_ACTION(action).finish = surf_get_clock();
 333     /* set the remains to 0 due to precision problems when updating the remaining amount */
 334 #ifdef HAVE_TRACING
 335     TRACE_surf_host_set_utilization(((cpu_Cas01_im_t)
 336                                      (action->cpu))->generic_resource.name,
 337                                     action->
 338                                     generic_lmm_action.generic_action.data,
 339                                     (surf_action_t) action,
 340                                     lmm_variable_getvalue
 341                                     (GENERIC_LMM_ACTION(action).variable),
 342                                     ((cpu_Cas01_im_t)
 343                                      (action->cpu))->last_update,
 344                                     now -
 345                                     ((cpu_Cas01_im_t)
 346                                      (action->cpu))->last_update);
 347 #endif
 348     GENERIC_ACTION(action).remains = 0;
 349     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 350     cpu_im_update_remains(action->cpu, surf_get_clock());
 351   }
 352   return;
 353 }
 354
 355 static void cpu_im_update_resource_state(void *id,
 356                                          tmgr_trace_event_t event_type,
 357                                          double value, double date)
 358 {
 359   cpu_Cas01_im_t cpu = id;
 360   lmm_variable_t var = NULL;
 361   lmm_element_t elem = NULL;
 362
 363   if (event_type == cpu->power_event) {
 364     cpu->power_scale = value;
 365     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 366                                 cpu->core * cpu->power_scale * cpu->power_peak);
 367 #ifdef HAVE_TRACING
 368     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 369                               cpu->core * cpu->power_scale * cpu->power_peak);
 370 #endif
 371     while ((var = lmm_get_var_from_cnst
 372             (cpu_im_maxmin_system, cpu->constraint, &elem))) {
 373         surf_action_cpu_Cas01_im_t action = lmm_variable_id(var);
 374         lmm_update_variable_bound(cpu_im_maxmin_system, action->generic_lmm_action.variable,
 375                                   cpu->power_scale * cpu->power_peak);
 376     }
 377     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 378     if (tmgr_trace_event_free(event_type))
 379       cpu->power_event = NULL;
 380   } else if (event_type == cpu->state_event) {
 381     if (value > 0)
 382       cpu->state_current = SURF_RESOURCE_ON;
 383     else {
 384       lmm_constraint_t cnst = cpu->constraint;
 385       lmm_variable_t var = NULL;
 386       lmm_element_t elem = NULL;
 387
 388       cpu->state_current = SURF_RESOURCE_OFF;
 389
 390       while ((var =
 391               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 392         surf_action_t action = lmm_variable_id(var);
 393
 394         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 395             surf_action_state_get(action) == SURF_ACTION_READY ||
 396             surf_action_state_get(action) ==
 397             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 398           action->finish = date;
 399           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 400         }
 401       }
 402     }
 403     if (tmgr_trace_event_free(event_type))
 404       cpu->state_event = NULL;
 405   } else {
 406     CRITICAL0("Unknown event ! \n");
 407     xbt_abort();
 408   }
 409
 410   return;
 411 }
 412
 413 static surf_action_t cpu_im_execute(void *cpu, double size)
 414 {
 415   surf_action_cpu_Cas01_im_t action = NULL;
 416   cpu_Cas01_im_t CPU = cpu;
 417
 418   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
 419   action =
 420       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 421                       surf_cpu_model,
 422                       CPU->state_current != SURF_RESOURCE_ON);
 423
 424   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 425                                                    calloc but it seems to help valgrind... */
 426
 427   GENERIC_LMM_ACTION(action).variable =
 428       lmm_variable_new(cpu_im_maxmin_system, action,
 429                        GENERIC_ACTION(action).priority, CPU->power_scale * CPU->power_peak, 1);
 430   action->index_heap = -1;
 431   action->cpu = CPU;
 432   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 433   xbt_swag_insert(action, CPU->action_set);
 434   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 435              GENERIC_LMM_ACTION(action).variable, 1.0);
 436   XBT_OUT;
 437   return (surf_action_t) action;
 438 }
 439
 440 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 441 {
 442   surf_action_cpu_Cas01_im_t action = NULL;
 443
 444   if (duration > 0)
 445     duration = MAX(duration, MAXMIN_PRECISION);
 446
 447   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
 448   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 449   GENERIC_ACTION(action).max_duration = duration;
 450   GENERIC_LMM_ACTION(action).suspended = 2;
 451   if (duration == NO_MAX_DURATION) {
 452     /* Move to the *end* of the corresponding action set. This convention
 453        is used to speed up update_resource_state  */
 454     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 455     ((surf_action_t) action)->state_set =
 456         cpu_im_running_action_set_that_does_not_need_being_checked;
 457     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 458   }
 459
 460   lmm_update_variable_weight(cpu_im_maxmin_system,
 461                              GENERIC_LMM_ACTION(action).variable, 0.0);
 462   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 463   XBT_OUT;
 464   return (surf_action_t) action;
 465 }
 466
 467 static void cpu_im_action_suspend(surf_action_t action)
 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                                0.0);
 474     ((surf_action_lmm_t) action)->suspended = 1;
 475     xbt_heap_remove(cpu_im_action_heap,
 476                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 477     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 478   }
 479   XBT_OUT;
 480 }
 481
 482 static void cpu_im_action_resume(surf_action_t action)
 483 {
 484
 485   XBT_IN1("(%p)", action);
 486   if (((surf_action_lmm_t) action)->suspended != 2) {
 487     lmm_update_variable_weight(cpu_im_maxmin_system,
 488                                ((surf_action_lmm_t) action)->variable,
 489                                action->priority);
 490     ((surf_action_lmm_t) action)->suspended = 0;
 491     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 492   }
 493   XBT_OUT;
 494 }
 495
 496 static int cpu_im_action_is_suspended(surf_action_t action)
 497 {
 498   return (((surf_action_lmm_t) action)->suspended == 1);
 499 }
 500
 501 static void cpu_im_action_set_max_duration(surf_action_t action,
 502                                            double duration)
 503 {
 504   XBT_IN2("(%p,%g)", action, duration);
 505
 506   action->max_duration = duration;
 507   /* insert cpu in modified_cpu set to notice the max duration change */
 508   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 509   XBT_OUT;
 510 }
 511
 512 static void cpu_im_action_set_priority(surf_action_t action,
 513                                        double priority)
 514 {
 515   XBT_IN2("(%p,%g)", action, priority);
 516   action->priority = priority;
 517   lmm_update_variable_weight(cpu_im_maxmin_system,
 518                              ((surf_action_lmm_t) action)->variable,
 519                              priority);
 520
 521   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 522   XBT_OUT;
 523 }
 524
 525 #ifdef HAVE_TRACING
 526 static void cpu_im_action_set_category(surf_action_t action,
 527                                        const char *category)
 528 {
 529   XBT_IN2("(%p,%s)", action, category);
 530   action->category = xbt_strdup (category);
 531   XBT_OUT;
 532 }
 533 #endif
 534
 535 static double cpu_im_action_get_remains(surf_action_t action)
 536 {
 537   XBT_IN1("(%p)", action);
 538   /* update remains before return it */
 539   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 540   return action->remains;
 541   XBT_OUT;
 542 }
 543
 544 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 545 {
 546   return ((cpu_Cas01_im_t) cpu)->state_current;
 547 }
 548
 549 static double cpu_im_get_speed(void *cpu, double load)
 550 {
 551   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 552 }
 553
 554 static double cpu_im_get_available_speed(void *cpu)
 555 {
 556   /* number between 0 and 1 */
 557   return ((cpu_Cas01_im_t) cpu)->power_scale;
 558 }
 559
 560 static void cpu_im_action_update_index_heap(void *action, int i)
 561 {
 562   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 563 }
 564
 565 static void cpu_im_create_resource(char *name, double power_peak,
 566                                    double power_scale,
 567                                    tmgr_trace_t power_trace,
 568                                    int core,
 569                                    e_surf_resource_state_t state_initial,
 570                                    tmgr_trace_t state_trace,
 571                                    xbt_dict_t cpu_properties)
 572 {
 573   cpu_im_new(name, power_peak, power_scale, power_trace, core,
 574              state_initial, state_trace, cpu_properties);
 575 }
 576
 577 static void cpu_im_finalize(void)
 578 {
 579   void *cpu;
 580   xbt_dict_cursor_t cursor;
 581   char *key;
 582   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
 583                    cpu) {
 584     cpu_Cas01_im_t CPU = cpu;
 585     xbt_swag_free(CPU->action_set);
 586   }
 587
 588   lmm_system_free(cpu_im_maxmin_system);
 589   cpu_im_maxmin_system = NULL;
 590
 591   surf_model_exit(surf_cpu_model);
 592   surf_cpu_model = NULL;
 593
 594   xbt_swag_free
 595       (cpu_im_running_action_set_that_does_not_need_being_checked);
 596   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 597   xbt_heap_free(cpu_im_action_heap);
 598   xbt_swag_free(cpu_im_modified_cpu);
 599 }
 600
 601 static void surf_cpu_im_model_init_internal(void)
 602 {
 603   s_surf_action_t action;
 604   s_cpu_Cas01_im_t cpu;
 605
 606   surf_cpu_model = surf_model_init();
 607
 608   cpu_im_running_action_set_that_does_not_need_being_checked =
 609       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 610
 611   surf_cpu_model->name = "CPU_IM";
 612
 613   surf_cpu_model->action_unref = cpu_im_action_unref;
 614   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 615   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 616
 617   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 618   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 619   surf_cpu_model->model_private->update_actions_state =
 620       cpu_im_update_actions_state;
 621   surf_cpu_model->model_private->update_resource_state =
 622       cpu_im_update_resource_state;
 623   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 624
 625   surf_cpu_model->suspend = cpu_im_action_suspend;
 626   surf_cpu_model->resume = cpu_im_action_resume;
 627   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 628   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 629   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 630 #ifdef HAVE_TRACING
 631   surf_cpu_model->set_category = cpu_im_action_set_category;
 632 #endif
 633   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 634
 635   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 636   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 637
 638   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 639   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 640   surf_cpu_model->extension.cpu.get_available_speed =
 641       cpu_im_get_available_speed;
 642   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 643   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 644
 645   if (!cpu_im_maxmin_system) {
 646     sg_maxmin_selective_update = 1;
 647     cpu_im_maxmin_system = lmm_system_new();
 648   }
 649   cpu_im_action_heap = xbt_heap_new(8, NULL);
 650   xbt_heap_set_update_callback(cpu_im_action_heap,
 651                                cpu_im_action_update_index_heap);
 652   cpu_im_modified_cpu =
 653       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 654 }
 655
 656 /*********************************************************************/
 657 /* Basic sharing model for CPU: that is where all this started... ;) */
 658 /*********************************************************************/
 659 /* @InProceedings{casanova01simgrid, */
 660 /*   author =       "H. Casanova", */
 661 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 662 /*                  and the Grid (CCGrid'01)", */
 663 /*   publisher =    "IEEE Computer Society", */
 664 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 665 /*                  Scheduling", */
 666 /*   year =         "2001", */
 667 /*   month =        may, */
 668 /*   note =         "Available at */
 669 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 670 /* } */
 671 void surf_cpu_model_init_Cas01_im(const char *filename)
 672 {
 673   if (surf_cpu_model)
 674     return;
 675   surf_cpu_im_model_init_internal();
 676   cpu_im_define_callbacks(filename);
 677   xbt_dynar_push(model_list, &surf_cpu_model);
 678 }