src/surf/cpu_im.c

   1 /* Copyright (c) 2009-2011. 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 #include "surf/surf_resource.h"
   9
  10
  11 #undef GENERIC_LMM_ACTION
  12 #undef GENERIC_ACTION
  13 #undef ACTION_GET_CPU
  14 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  15 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  16 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_im_t) action)->cpu
  17
  18 typedef struct surf_action_cpu_cas01_im {
  19   s_surf_action_lmm_t generic_lmm_action;
  20   s_xbt_swag_hookup_t cpu_list_hookup;
  21   int index_heap;
  22   void *cpu;
  23 } s_surf_action_cpu_Cas01_im_t, *surf_action_cpu_Cas01_im_t;
  24
  25 typedef struct cpu_Cas01_im {
  26   s_surf_resource_t generic_resource;
  27   s_xbt_swag_hookup_t modified_cpu_hookup;
  28   double power_peak;
  29   double power_scale;
  30   tmgr_trace_event_t power_event;
  31   int core;
  32   e_surf_resource_state_t state_current;
  33   tmgr_trace_event_t state_event;
  34   lmm_constraint_t constraint;
  35   xbt_swag_t action_set;
  36   double last_update;
  37 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
  38
  39 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
  40                                 "Logging specific to the SURF CPU IMPROVED module");
  41
  42
  43 lmm_system_t cpu_im_maxmin_system = NULL;
  44 static xbt_swag_t cpu_im_modified_cpu = NULL;
  45 static xbt_heap_t cpu_im_action_heap = NULL;
  46 extern int sg_maxmin_selective_update;
  47
  48
  49 static xbt_swag_t
  50     cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
  51
  52 static void* cpu_im_create_resource(const char *name, double power_peak,
  53                                  double power_scale,
  54                                  tmgr_trace_t power_trace,
  55                                  int core,
  56                                  e_surf_resource_state_t state_initial,
  57                                  tmgr_trace_t state_trace,
  58                                  xbt_dict_t cpu_properties)
  59 {
  60   cpu_Cas01_im_t cpu = NULL;
  61   s_surf_action_cpu_Cas01_im_t action;
  62
  63   xbt_assert(!surf_cpu_resource_by_name(name),
  64               "Host '%s' declared several times in the platform file",
  65               name);
  66   cpu = (cpu_Cas01_im_t) surf_resource_new(sizeof(s_cpu_Cas01_im_t),
  67           surf_cpu_model, name,cpu_properties);
  68   cpu->power_peak = power_peak;
  69   xbt_assert(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_assert(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_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
  87   cpu->action_set = xbt_swag_new(xbt_swag_offset(action, cpu_list_hookup));
  88
  89   return cpu;
  90 }
  91
  92
  93 static void parse_cpu_im_init(sg_platf_host_cbarg_t host)
  94 {
  95         cpu_im_create_resource(host->id,
  96                           host->power_peak,
  97                           host->power_scale,
  98                           host->power_trace,
  99                           host->core_amount,
 100                           host->initial_state,
 101                           host->state_trace,
 102                           host->properties);
 103 }
 104
 105 static void cpu_im_add_traces_cpu(void)
 106 {
 107   xbt_dict_cursor_t cursor = NULL;
 108   char *trace_name, *elm;
 109   static int called = 0;
 110   if (called)
 111     return;
 112   called = 1;
 113
 114   /* connect all traces relative to hosts */
 115   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 116     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 117     cpu_Cas01_im_t host = surf_cpu_resource_by_name(elm);
 118
 119     xbt_assert(host, "Host %s undefined", elm);
 120     xbt_assert(trace, "Trace %s undefined", trace_name);
 121
 122     host->state_event =
 123         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 124   }
 125
 126   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 127     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 128     cpu_Cas01_im_t host = surf_cpu_resource_by_name(elm);
 129
 130     xbt_assert(host, "Host %s undefined", elm);
 131     xbt_assert(trace, "Trace %s undefined", trace_name);
 132
 133     host->power_event =
 134         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 135   }
 136 }
 137
 138 static void cpu_im_define_callbacks()
 139 {
 140   sg_platf_host_add_cb(parse_cpu_im_init);
 141   sg_platf_postparse_add_cb(cpu_im_add_traces_cpu);
 142 }
 143
 144 static int cpu_im_resource_used(void *resource)
 145 {
 146   return lmm_constraint_used(cpu_im_maxmin_system,
 147                              ((cpu_Cas01_im_t) resource)->constraint);
 148 }
 149
 150 static int cpu_im_action_unref(surf_action_t action)
 151 {
 152   action->refcount--;
 153   if (!action->refcount) {
 154     xbt_swag_remove(action, action->state_set);
 155     if (((surf_action_lmm_t) action)->variable)
 156       lmm_variable_free(cpu_im_maxmin_system,
 157                         ((surf_action_lmm_t) action)->variable);
 158     /* remove from heap */
 159     xbt_heap_remove(cpu_im_action_heap,
 160                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 161     xbt_swag_remove(action,
 162                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 163     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 164 #ifdef HAVE_TRACING
 165     xbt_free(action->category);
 166 #endif
 167     surf_action_free(&action);
 168     return 1;
 169   }
 170   return 0;
 171 }
 172
 173 static void cpu_im_action_cancel(surf_action_t action)
 174 {
 175   surf_action_state_set(action, SURF_ACTION_FAILED);
 176   xbt_heap_remove(cpu_im_action_heap,
 177                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 178   xbt_swag_remove(action,
 179                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 180   return;
 181 }
 182
 183 static void cpu_im_cpu_action_state_set(surf_action_t action,
 184                                         e_surf_action_state_t state)
 185 {
 186 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 187 /*     if(((surf_action_lmm_t)action)->variable) { */
 188 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 189 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 190 /*     } */
 191
 192   surf_action_state_set(action, state);
 193   return;
 194 }
 195
 196 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 197 {
 198   surf_action_cpu_Cas01_im_t action;
 199
 200   if (cpu->last_update >= now)
 201     return;
 202   xbt_swag_foreach(action, cpu->action_set) {
 203     if (GENERIC_ACTION(action).state_set !=
 204         surf_cpu_model->states.running_action_set)
 205       continue;
 206
 207     /* bogus priority, skip it */
 208     if (GENERIC_ACTION(action).priority <= 0)
 209       continue;
 210
 211     if (GENERIC_ACTION(action).remains > 0) {
 212       double_update(&(GENERIC_ACTION(action).remains),
 213                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 214                                           (action).variable) * (now -
 215                                                                 cpu->last_update));
 216 #ifdef HAVE_TRACING
 217       if (TRACE_is_enabled()) {
 218         TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 219                                         action->
 220                                         generic_lmm_action.generic_action.
 221                                         data, (surf_action_t) action,
 222                                         lmm_variable_getvalue
 223                                         (GENERIC_LMM_ACTION
 224                                          (action).variable),
 225                                         cpu->last_update,
 226                                         now - cpu->last_update);
 227       }
 228 #endif
 229       XBT_DEBUG("Update action(%p) remains %lf", action,
 230              GENERIC_ACTION(action).remains);
 231     }
 232   }
 233   cpu->last_update = now;
 234 }
 235
 236 static double cpu_im_share_resources(double now)
 237 {
 238   surf_action_cpu_Cas01_im_t action;
 239   double min;
 240   double value;
 241   cpu_Cas01_im_t cpu, cpu_next;
 242
 243   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 244       cpu_im_update_remains(cpu, now);
 245
 246   lmm_solve(cpu_im_maxmin_system);
 247
 248   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 249     xbt_swag_foreach(action, cpu->action_set) {
 250       if (GENERIC_ACTION(action).state_set !=
 251           surf_cpu_model->states.running_action_set)
 252         continue;
 253
 254       /* bogus priority, skip it */
 255       if (GENERIC_ACTION(action).priority <= 0)
 256         continue;
 257
 258       min = -1;
 259       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 260       if (value > 0) {
 261         if (GENERIC_ACTION(action).remains > 0) {
 262           value = GENERIC_ACTION(action).remains / value;
 263           min = now + value;
 264         } else {
 265           value = 0.0;
 266           min = now;
 267         }
 268       }
 269
 270       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 271           && (min == -1
 272               || GENERIC_ACTION(action).start +
 273               GENERIC_ACTION(action).max_duration < min))
 274         min =
 275             GENERIC_ACTION(action).start +
 276             GENERIC_ACTION(action).max_duration;
 277
 278       XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 279              GENERIC_ACTION(action).start, now + value,
 280              GENERIC_ACTION(action).max_duration);
 281
 282       if (action->index_heap >= 0) {
 283         surf_action_cpu_Cas01_im_t heap_act =
 284             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 285         if (heap_act != action)
 286           DIE_IMPOSSIBLE;
 287       }
 288       if (min != -1) {
 289         xbt_heap_push(cpu_im_action_heap, action, min);
 290         XBT_DEBUG("Insert at heap action(%p) min %lf", action, min);
 291       }
 292     }
 293     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 294   }
 295   return xbt_heap_size(cpu_im_action_heap) >
 296       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 297 }
 298
 299 static void cpu_im_update_actions_state(double now, double delta)
 300 {
 301   surf_action_cpu_Cas01_im_t action;
 302
 303   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 304          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 305     action = xbt_heap_pop(cpu_im_action_heap);
 306     XBT_DEBUG("Action %p: finish", action);
 307     GENERIC_ACTION(action).finish = surf_get_clock();
 308     /* set the remains to 0 due to precision problems when updating the remaining amount */
 309 #ifdef HAVE_TRACING
 310     if (TRACE_is_enabled()) {
 311       cpu_Cas01_im_t cpu = ((cpu_Cas01_im_t)(action->cpu));
 312       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 313           action->generic_lmm_action.generic_action.data,
 314           (surf_action_t) action,
 315           lmm_variable_getvalue (GENERIC_LMM_ACTION(action).variable),
 316           cpu->last_update,
 317           now - cpu->last_update);
 318     }
 319 #endif
 320     GENERIC_ACTION(action).remains = 0;
 321     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 322     cpu_im_update_remains(action->cpu, surf_get_clock());
 323   }
 324 #ifdef HAVE_TRACING
 325   if (TRACE_is_enabled()) {
 326     //defining the last timestamp that we can safely dump to trace file
 327     //without losing the event ascending order (considering all CPU's)
 328     void **data;
 329     cpu_Cas01_im_t cpu;
 330     xbt_lib_cursor_t cursor;
 331     char *key;
 332     double smaller = -1;
 333     xbt_lib_foreach(host_lib, cursor, key, data){
 334       if(data[SURF_CPU_LEVEL]){
 335         cpu = data[SURF_CPU_LEVEL];
 336         if (smaller < 0){
 337           smaller = cpu->last_update;
 338           continue;
 339         }
 340         if (cpu->last_update < smaller){
 341           smaller = cpu->last_update;
 342         }
 343       }
 344     }
 345     if (smaller > 0) {
 346       TRACE_last_timestamp_to_dump = smaller;
 347     }
 348   }
 349 #endif
 350   return;
 351 }
 352
 353 static void cpu_im_update_resource_state(void *id,
 354                                          tmgr_trace_event_t event_type,
 355                                          double value, double date)
 356 {
 357   cpu_Cas01_im_t cpu = id;
 358   lmm_variable_t var = NULL;
 359   lmm_element_t elem = NULL;
 360
 361   if (event_type == cpu->power_event) {
 362     cpu->power_scale = value;
 363     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 364                                 cpu->core * cpu->power_scale * cpu->power_peak);
 365 #ifdef HAVE_TRACING
 366     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 367                               cpu->core * cpu->power_scale * cpu->power_peak);
 368 #endif
 369     while ((var = lmm_get_var_from_cnst
 370             (cpu_im_maxmin_system, cpu->constraint, &elem))) {
 371         surf_action_cpu_Cas01_im_t action = lmm_variable_id(var);
 372         lmm_update_variable_bound(cpu_im_maxmin_system, action->generic_lmm_action.variable,
 373                                   cpu->power_scale * cpu->power_peak);
 374     }
 375     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 376     if (tmgr_trace_event_free(event_type))
 377       cpu->power_event = NULL;
 378   } else if (event_type == cpu->state_event) {
 379     if (value > 0)
 380       cpu->state_current = SURF_RESOURCE_ON;
 381     else {
 382       lmm_constraint_t cnst = cpu->constraint;
 383       lmm_variable_t var = NULL;
 384       lmm_element_t elem = NULL;
 385
 386       cpu->state_current = SURF_RESOURCE_OFF;
 387
 388       while ((var =
 389               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 390         surf_action_t action = lmm_variable_id(var);
 391
 392         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 393             surf_action_state_get(action) == SURF_ACTION_READY ||
 394             surf_action_state_get(action) ==
 395             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 396           action->finish = date;
 397           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 398         }
 399       }
 400     }
 401     if (tmgr_trace_event_free(event_type))
 402       cpu->state_event = NULL;
 403   } else {
 404     XBT_CRITICAL("Unknown event ! \n");
 405     xbt_abort();
 406   }
 407
 408   return;
 409 }
 410
 411 static surf_action_t cpu_im_execute(void *cpu, double size)
 412 {
 413   surf_action_cpu_Cas01_im_t action = NULL;
 414   cpu_Cas01_im_t CPU = cpu;
 415
 416   XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
 417   action =
 418       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 419                       surf_cpu_model,
 420                       CPU->state_current != SURF_RESOURCE_ON);
 421
 422   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 423                                                    calloc but it seems to help valgrind... */
 424
 425   GENERIC_LMM_ACTION(action).variable =
 426       lmm_variable_new(cpu_im_maxmin_system, action,
 427                        GENERIC_ACTION(action).priority, CPU->power_scale * CPU->power_peak, 1);
 428   action->index_heap = -1;
 429   action->cpu = CPU;
 430   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 431   xbt_swag_insert(action, CPU->action_set);
 432   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 433              GENERIC_LMM_ACTION(action).variable, 1.0);
 434   XBT_OUT();
 435   return (surf_action_t) action;
 436 }
 437
 438 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 439 {
 440   surf_action_cpu_Cas01_im_t action = NULL;
 441
 442   if (duration > 0)
 443     duration = MAX(duration, MAXMIN_PRECISION);
 444
 445   XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
 446   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 447   GENERIC_ACTION(action).max_duration = duration;
 448   GENERIC_LMM_ACTION(action).suspended = 2;
 449   if (duration == NO_MAX_DURATION) {
 450     /* Move to the *end* of the corresponding action set. This convention
 451        is used to speed up update_resource_state  */
 452     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 453     ((surf_action_t) action)->state_set =
 454         cpu_im_running_action_set_that_does_not_need_being_checked;
 455     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 456   }
 457
 458   lmm_update_variable_weight(cpu_im_maxmin_system,
 459                              GENERIC_LMM_ACTION(action).variable, 0.0);
 460   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 461   XBT_OUT();
 462   return (surf_action_t) action;
 463 }
 464
 465 static void cpu_im_action_suspend(surf_action_t action)
 466 {
 467   XBT_IN("(%p)", action);
 468   if (((surf_action_lmm_t) action)->suspended != 2) {
 469     lmm_update_variable_weight(cpu_im_maxmin_system,
 470                                ((surf_action_lmm_t) action)->variable,
 471                                0.0);
 472     ((surf_action_lmm_t) action)->suspended = 1;
 473     xbt_heap_remove(cpu_im_action_heap,
 474                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 475     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 476   }
 477   XBT_OUT();
 478 }
 479
 480 static void cpu_im_action_resume(surf_action_t action)
 481 {
 482
 483   XBT_IN("(%p)", action);
 484   if (((surf_action_lmm_t) action)->suspended != 2) {
 485     lmm_update_variable_weight(cpu_im_maxmin_system,
 486                                ((surf_action_lmm_t) action)->variable,
 487                                action->priority);
 488     ((surf_action_lmm_t) action)->suspended = 0;
 489     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 490   }
 491   XBT_OUT();
 492 }
 493
 494 static int cpu_im_action_is_suspended(surf_action_t action)
 495 {
 496   return (((surf_action_lmm_t) action)->suspended == 1);
 497 }
 498
 499 static void cpu_im_action_set_max_duration(surf_action_t action,
 500                                            double duration)
 501 {
 502   XBT_IN("(%p,%g)", action, duration);
 503
 504   action->max_duration = duration;
 505   /* insert cpu in modified_cpu set to notice the max duration change */
 506   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 507   XBT_OUT();
 508 }
 509
 510 static void cpu_im_action_set_priority(surf_action_t action,
 511                                        double priority)
 512 {
 513   XBT_IN("(%p,%g)", action, priority);
 514   action->priority = priority;
 515   lmm_update_variable_weight(cpu_im_maxmin_system,
 516                              ((surf_action_lmm_t) action)->variable,
 517                              priority);
 518
 519   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 520   XBT_OUT();
 521 }
 522
 523 #ifdef HAVE_TRACING
 524 static void cpu_im_action_set_category(surf_action_t action,
 525                                        const char *category)
 526 {
 527   XBT_IN("(%p,%s)", action, category);
 528   action->category = xbt_strdup (category);
 529   XBT_OUT();
 530 }
 531 #endif
 532
 533 static double cpu_im_action_get_remains(surf_action_t action)
 534 {
 535   XBT_IN("(%p)", action);
 536   /* update remains before return it */
 537   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 538   return action->remains;
 539   XBT_OUT();
 540 }
 541
 542 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 543 {
 544   return ((cpu_Cas01_im_t) cpu)->state_current;
 545 }
 546
 547 static double cpu_im_get_speed(void *cpu, double load)
 548 {
 549   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 550 }
 551
 552 static double cpu_im_get_available_speed(void *cpu)
 553 {
 554   /* number between 0 and 1 */
 555   return ((cpu_Cas01_im_t) cpu)->power_scale;
 556 }
 557
 558 static void cpu_im_action_update_index_heap(void *action, int i)
 559 {
 560   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 561 }
 562
 563 static void cpu_im_finalize(void)
 564 {
 565   void **cpu;
 566   xbt_lib_cursor_t cursor;
 567   char *key;
 568
 569   xbt_lib_foreach(host_lib, cursor, key, cpu){
 570           if(cpu[SURF_CPU_LEVEL])
 571           {
 572                     cpu_Cas01_im_t CPU = cpu[SURF_CPU_LEVEL];
 573                     xbt_swag_free(CPU->action_set);
 574           }
 575   }
 576
 577   lmm_system_free(cpu_im_maxmin_system);
 578   cpu_im_maxmin_system = NULL;
 579
 580   surf_model_exit(surf_cpu_model);
 581   surf_cpu_model = NULL;
 582
 583   xbt_swag_free
 584       (cpu_im_running_action_set_that_does_not_need_being_checked);
 585   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 586   xbt_heap_free(cpu_im_action_heap);
 587   xbt_swag_free(cpu_im_modified_cpu);
 588 }
 589
 590 static void surf_cpu_im_model_init_internal(void)
 591 {
 592   s_surf_action_t action;
 593   s_cpu_Cas01_im_t cpu;
 594
 595   surf_cpu_model = surf_model_init();
 596
 597   cpu_im_running_action_set_that_does_not_need_being_checked =
 598       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 599
 600   surf_cpu_model->name = "CPU_IM";
 601
 602   surf_cpu_model->action_unref = cpu_im_action_unref;
 603   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 604   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 605
 606   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 607   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 608   surf_cpu_model->model_private->update_actions_state =
 609       cpu_im_update_actions_state;
 610   surf_cpu_model->model_private->update_resource_state =
 611       cpu_im_update_resource_state;
 612   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 613
 614   surf_cpu_model->suspend = cpu_im_action_suspend;
 615   surf_cpu_model->resume = cpu_im_action_resume;
 616   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 617   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 618   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 619 #ifdef HAVE_TRACING
 620   surf_cpu_model->set_category = cpu_im_action_set_category;
 621 #endif
 622   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 623
 624   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 625   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 626
 627   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 628   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 629   surf_cpu_model->extension.cpu.get_available_speed =
 630       cpu_im_get_available_speed;
 631   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 632   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 633
 634   if (!cpu_im_maxmin_system) {
 635     sg_maxmin_selective_update = 1;
 636     cpu_im_maxmin_system = lmm_system_new();
 637   }
 638   cpu_im_action_heap = xbt_heap_new(8, NULL);
 639   xbt_heap_set_update_callback(cpu_im_action_heap,
 640                                cpu_im_action_update_index_heap);
 641   cpu_im_modified_cpu =
 642       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 643 }
 644
 645 /*********************************************************************/
 646 /* Basic sharing model for CPU: that is where all this started... ;) */
 647 /*********************************************************************/
 648 /* @InProceedings{casanova01simgrid, */
 649 /*   author =       "H. Casanova", */
 650 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 651 /*                  and the Grid (CCGrid'01)", */
 652 /*   publisher =    "IEEE Computer Society", */
 653 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 654 /*                  Scheduling", */
 655 /*   year =         "2001", */
 656 /*   month =        may, */
 657 /*   note =         "Available at */
 658 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 659 /* } */
 660 void surf_cpu_model_init_Cas01_im()
 661 {
 662   if (surf_cpu_model)
 663     return;
 664   surf_cpu_im_model_init_internal();
 665   cpu_im_define_callbacks();
 666   xbt_dynar_push(model_list, &surf_cpu_model);
 667 }