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           min = now + value;
 283         } else {
 284           value = 0.0;
 285           min = now;
 286         }
 287       }
 288
 289       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 290           && (min == -1
 291               || GENERIC_ACTION(action).start +
 292               GENERIC_ACTION(action).max_duration < min))
 293         min =
 294             GENERIC_ACTION(action).start +
 295             GENERIC_ACTION(action).max_duration;
 296
 297       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 298              GENERIC_ACTION(action).start, now + value,
 299              GENERIC_ACTION(action).max_duration);
 300
 301       if (action->index_heap >= 0) {
 302         surf_action_cpu_Cas01_im_t heap_act =
 303             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 304         if (heap_act != action)
 305           DIE_IMPOSSIBLE;
 306       }
 307       if (min != -1) {
 308         xbt_heap_push(cpu_im_action_heap, action, min);
 309         DEBUG2("Insert at heap action(%p) min %lf", action, min);
 310       }
 311     }
 312     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 313   }
 314   return xbt_heap_size(cpu_im_action_heap) >
 315       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 316 }
 317
 318 static void cpu_im_update_actions_state(double now, double delta)
 319 {
 320   surf_action_cpu_Cas01_im_t action;
 321
 322   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 323          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 324     action = xbt_heap_pop(cpu_im_action_heap);
 325     DEBUG1("Action %p: finish", action);
 326     GENERIC_ACTION(action).finish = surf_get_clock();
 327     /* set the remains to 0 due to precision problems when updating the remaining amount */
 328 #ifdef HAVE_TRACING
 329     TRACE_surf_host_set_utilization(((cpu_Cas01_im_t)
 330                                      (action->cpu))->generic_resource.name,
 331                                     action->
 332                                     generic_lmm_action.generic_action.data,
 333                                     (surf_action_t) action,
 334                                     lmm_variable_getvalue
 335                                     (GENERIC_LMM_ACTION(action).variable),
 336                                     ((cpu_Cas01_im_t)
 337                                      (action->cpu))->last_update,
 338                                     now -
 339                                     ((cpu_Cas01_im_t)
 340                                      (action->cpu))->last_update);
 341 #endif
 342     GENERIC_ACTION(action).remains = 0;
 343     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 344     cpu_im_update_remains(action->cpu, surf_get_clock());
 345   }
 346   return;
 347 }
 348
 349 static void cpu_im_update_resource_state(void *id,
 350                                          tmgr_trace_event_t event_type,
 351                                          double value, double date)
 352 {
 353   cpu_Cas01_im_t cpu = id;
 354   if (event_type == cpu->power_event) {
 355     cpu->power_scale = value;
 356     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 357                                 cpu->power_scale * cpu->power_peak);
 358 #ifdef HAVE_TRACING
 359     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 360                               cpu->power_scale * cpu->power_peak);
 361 #endif
 362     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 363     if (tmgr_trace_event_free(event_type))
 364       cpu->power_event = NULL;
 365   } else if (event_type == cpu->state_event) {
 366     if (value > 0)
 367       cpu->state_current = SURF_RESOURCE_ON;
 368     else {
 369       lmm_constraint_t cnst = cpu->constraint;
 370       lmm_variable_t var = NULL;
 371       lmm_element_t elem = NULL;
 372
 373       cpu->state_current = SURF_RESOURCE_OFF;
 374
 375       while ((var =
 376               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 377         surf_action_t action = lmm_variable_id(var);
 378
 379         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 380             surf_action_state_get(action) == SURF_ACTION_READY ||
 381             surf_action_state_get(action) ==
 382             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 383           action->finish = date;
 384           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 385         }
 386       }
 387     }
 388     if (tmgr_trace_event_free(event_type))
 389       cpu->state_event = NULL;
 390   } else {
 391     CRITICAL0("Unknown event ! \n");
 392     xbt_abort();
 393   }
 394
 395   return;
 396 }
 397
 398 static surf_action_t cpu_im_execute(void *cpu, double size)
 399 {
 400   surf_action_cpu_Cas01_im_t action = NULL;
 401   cpu_Cas01_im_t CPU = cpu;
 402
 403   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
 404   action =
 405       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 406                       surf_cpu_model,
 407                       CPU->state_current != SURF_RESOURCE_ON);
 408
 409   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 410                                                    calloc but it seems to help valgrind... */
 411
 412   GENERIC_LMM_ACTION(action).variable =
 413       lmm_variable_new(cpu_im_maxmin_system, action,
 414                        GENERIC_ACTION(action).priority, -1.0, 1);
 415   action->index_heap = -1;
 416   action->cpu = CPU;
 417   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 418   xbt_swag_insert(action, CPU->action_set);
 419   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 420              GENERIC_LMM_ACTION(action).variable, 1.0);
 421   XBT_OUT;
 422   return (surf_action_t) action;
 423 }
 424
 425 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 426 {
 427   surf_action_cpu_Cas01_im_t action = NULL;
 428
 429   if (duration > 0)
 430     duration = MAX(duration, MAXMIN_PRECISION);
 431
 432   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
 433   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 434   GENERIC_ACTION(action).max_duration = duration;
 435   GENERIC_LMM_ACTION(action).suspended = 2;
 436   if (duration == NO_MAX_DURATION) {
 437     /* Move to the *end* of the corresponding action set. This convention
 438        is used to speed up update_resource_state  */
 439     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 440     ((surf_action_t) action)->state_set =
 441         cpu_im_running_action_set_that_does_not_need_being_checked;
 442     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 443   }
 444
 445   lmm_update_variable_weight(cpu_im_maxmin_system,
 446                              GENERIC_LMM_ACTION(action).variable, 0.0);
 447   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 448   XBT_OUT;
 449   return (surf_action_t) action;
 450 }
 451
 452 static void cpu_im_action_suspend(surf_action_t action)
 453 {
 454   XBT_IN1("(%p)", action);
 455   if (((surf_action_lmm_t) action)->suspended != 2) {
 456     lmm_update_variable_weight(cpu_im_maxmin_system,
 457                                ((surf_action_lmm_t) action)->variable,
 458                                0.0);
 459     ((surf_action_lmm_t) action)->suspended = 1;
 460     xbt_heap_remove(cpu_im_action_heap,
 461                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 462     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 463   }
 464   XBT_OUT;
 465 }
 466
 467 static void cpu_im_action_resume(surf_action_t action)
 468 {
 469
 470   XBT_IN1("(%p)", action);
 471   if (((surf_action_lmm_t) action)->suspended != 2) {
 472     lmm_update_variable_weight(cpu_im_maxmin_system,
 473                                ((surf_action_lmm_t) action)->variable,
 474                                action->priority);
 475     ((surf_action_lmm_t) action)->suspended = 0;
 476     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 477   }
 478   XBT_OUT;
 479 }
 480
 481 static int cpu_im_action_is_suspended(surf_action_t action)
 482 {
 483   return (((surf_action_lmm_t) action)->suspended == 1);
 484 }
 485
 486 static void cpu_im_action_set_max_duration(surf_action_t action,
 487                                            double duration)
 488 {
 489   XBT_IN2("(%p,%g)", action, duration);
 490
 491   action->max_duration = duration;
 492   /* insert cpu in modified_cpu set to notice the max duration change */
 493   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 494   XBT_OUT;
 495 }
 496
 497 static void cpu_im_action_set_priority(surf_action_t action,
 498                                        double priority)
 499 {
 500   XBT_IN2("(%p,%g)", action, priority);
 501   action->priority = priority;
 502   lmm_update_variable_weight(cpu_im_maxmin_system,
 503                              ((surf_action_lmm_t) action)->variable,
 504                              priority);
 505
 506   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 507   XBT_OUT;
 508 }
 509
 510 static double cpu_im_action_get_remains(surf_action_t action)
 511 {
 512   XBT_IN1("(%p)", action);
 513   /* update remains before return it */
 514   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 515   return action->remains;
 516   XBT_OUT;
 517 }
 518
 519 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 520 {
 521   return ((cpu_Cas01_im_t) cpu)->state_current;
 522 }
 523
 524 static double cpu_im_get_speed(void *cpu, double load)
 525 {
 526   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 527 }
 528
 529 static double cpu_im_get_available_speed(void *cpu)
 530 {
 531   /* number between 0 and 1 */
 532   return ((cpu_Cas01_im_t) cpu)->power_scale;
 533 }
 534
 535 static void cpu_im_action_update_index_heap(void *action, int i)
 536 {
 537   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 538 }
 539
 540 static void cpu_im_create_resource(char *name, double power_peak,
 541                                    double power_scale,
 542                                    tmgr_trace_t power_trace,
 543                                    e_surf_resource_state_t state_initial,
 544                                    tmgr_trace_t state_trace,
 545                                    xbt_dict_t cpu_properties)
 546 {
 547   cpu_im_new(name, power_peak, power_scale, power_trace,
 548              state_initial, state_trace, cpu_properties);
 549 }
 550
 551 static void cpu_im_finalize(void)
 552 {
 553   void *cpu;
 554   xbt_dict_cursor_t cursor;
 555   char *key;
 556   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
 557                    cpu) {
 558     cpu_Cas01_im_t CPU = cpu;
 559     xbt_swag_free(CPU->action_set);
 560   }
 561
 562   lmm_system_free(cpu_im_maxmin_system);
 563   cpu_im_maxmin_system = NULL;
 564
 565   surf_model_exit(surf_cpu_model);
 566   surf_cpu_model = NULL;
 567
 568   xbt_swag_free
 569       (cpu_im_running_action_set_that_does_not_need_being_checked);
 570   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 571   xbt_heap_free(cpu_im_action_heap);
 572   xbt_swag_free(cpu_im_modified_cpu);
 573 }
 574
 575 static void surf_cpu_im_model_init_internal(void)
 576 {
 577   s_surf_action_t action;
 578   s_cpu_Cas01_im_t cpu;
 579
 580   surf_cpu_model = surf_model_init();
 581
 582   cpu_im_running_action_set_that_does_not_need_being_checked =
 583       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 584
 585   surf_cpu_model->name = "CPU_IM";
 586
 587   surf_cpu_model->action_unref = cpu_im_action_unref;
 588   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 589   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 590
 591   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 592   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 593   surf_cpu_model->model_private->update_actions_state =
 594       cpu_im_update_actions_state;
 595   surf_cpu_model->model_private->update_resource_state =
 596       cpu_im_update_resource_state;
 597   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 598
 599   surf_cpu_model->suspend = cpu_im_action_suspend;
 600   surf_cpu_model->resume = cpu_im_action_resume;
 601   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 602   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 603   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 604   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 605
 606   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 607   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 608
 609   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 610   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 611   surf_cpu_model->extension.cpu.get_available_speed =
 612       cpu_im_get_available_speed;
 613   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 614   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 615
 616   if (!cpu_im_maxmin_system) {
 617     sg_maxmin_selective_update = 1;
 618     cpu_im_maxmin_system = lmm_system_new();
 619   }
 620   cpu_im_action_heap = xbt_heap_new(8, NULL);
 621   xbt_heap_set_update_callback(cpu_im_action_heap,
 622                                cpu_im_action_update_index_heap);
 623   cpu_im_modified_cpu =
 624       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 625 }
 626
 627 /*********************************************************************/
 628 /* Basic sharing model for CPU: that is where all this started... ;) */
 629 /*********************************************************************/
 630 /* @InProceedings{casanova01simgrid, */
 631 /*   author =       "H. Casanova", */
 632 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 633 /*                  and the Grid (CCGrid'01)", */
 634 /*   publisher =    "IEEE Computer Society", */
 635 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 636 /*                  Scheduling", */
 637 /*   year =         "2001", */
 638 /*   month =        may, */
 639 /*   note =         "Available at */
 640 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 641 /* } */
 642 void surf_cpu_model_init_Cas01_im(const char *filename)
 643 {
 644   if (surf_cpu_model)
 645     return;
 646   surf_cpu_im_model_init_internal();
 647   cpu_im_define_callbacks(filename);
 648   xbt_dynar_push(model_list, &surf_cpu_model);
 649 }