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 surf_model_t surf_cpu_model = NULL;
  11 lmm_system_t cpu_maxmin_system = NULL;
  12
  13 #undef GENERIC_LMM_ACTION
  14 #undef GENERIC_ACTION
  15 #undef ACTION_GET_CPU
  16 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  17 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  18 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_im_t) action)->cpu
  19
  20 typedef struct surf_action_cpu_cas01_im {
  21   s_surf_action_lmm_t generic_lmm_action;
  22   s_xbt_swag_hookup_t cpu_list_hookup;
  23   int index_heap;
  24   void *cpu;
  25 } s_surf_action_cpu_Cas01_im_t, *surf_action_cpu_Cas01_im_t;
  26
  27 typedef struct cpu_Cas01_im {
  28   s_surf_resource_t generic_resource;
  29   s_xbt_swag_hookup_t modified_cpu_hookup;
  30   double power_peak;
  31   double power_scale;
  32   tmgr_trace_event_t power_event;
  33   int core;
  34   e_surf_resource_state_t state_current;
  35   tmgr_trace_event_t state_event;
  36   lmm_constraint_t constraint;
  37   xbt_swag_t action_set;
  38   double last_update;
  39 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
  40
  41 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
  42                                 "Logging specific to the SURF CPU IMPROVED module");
  43
  44 lmm_system_t cpu_im_maxmin_system = NULL;
  45 static xbt_swag_t cpu_im_modified_cpu = NULL;
  46 static xbt_heap_t cpu_im_action_heap = NULL;
  47 extern int sg_maxmin_selective_update;
  48
  49
  50 static xbt_swag_t
  51     cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
  52
  53 static void* cpu_im_create_resource(const char *name, double power_peak,
  54                                  double power_scale,
  55                                  tmgr_trace_t power_trace,
  56                                  int core,
  57                                  e_surf_resource_state_t state_initial,
  58                                  tmgr_trace_t state_trace,
  59                                  xbt_dict_t cpu_properties)
  60 {
  61   cpu_Cas01_im_t cpu = NULL;
  62   s_surf_action_cpu_Cas01_im_t action;
  63
  64   xbt_assert(!surf_cpu_resource_by_name(name),
  65               "Host '%s' declared several times in the platform file",
  66               name);
  67   cpu = (cpu_Cas01_im_t) surf_resource_new(sizeof(s_cpu_Cas01_im_t),
  68           surf_cpu_model, name,cpu_properties);
  69   cpu->power_peak = power_peak;
  70   xbt_assert(cpu->power_peak > 0, "Power has to be >0");
  71   cpu->power_scale = power_scale;
  72   cpu->core = core;
  73   xbt_assert(core>0,"Invalid number of cores %d",core);
  74
  75   if (power_trace)
  76     cpu->power_event =
  77         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  78
  79   cpu->state_current = state_initial;
  80   if (state_trace)
  81     cpu->state_event =
  82         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  83
  84   cpu->constraint =
  85       lmm_constraint_new(cpu_im_maxmin_system, cpu,
  86                          cpu->core * cpu->power_scale * cpu->power_peak);
  87
  88   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
  89   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
  90     cpu->action_set = xbt_swag_new(xbt_swag_offset(action, cpu_list_hookup));
  91
  92   return cpu;
  93 }
  94
  95
  96 static void parse_cpu_im_init(sg_platf_host_cbarg_t host)
  97 {
  98         cpu_im_create_resource(host->id,
  99                           host->power_peak,
 100                           host->power_scale,
 101                           host->power_trace,
 102                           host->core_amount,
 103                           host->initial_state,
 104                           host->state_trace,
 105                           host->properties);
 106 }
 107
 108 static void cpu_im_add_traces_cpu(void)
 109 {
 110   xbt_dict_cursor_t cursor = NULL;
 111   char *trace_name, *elm;
 112   static int called = 0;
 113   if (called)
 114     return;
 115   called = 1;
 116
 117   /* connect all traces relative to hosts */
 118   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 119     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 120     cpu_Cas01_im_t host = surf_cpu_resource_by_name(elm);
 121
 122     xbt_assert(host, "Host %s undefined", elm);
 123     xbt_assert(trace, "Trace %s undefined", trace_name);
 124
 125     host->state_event =
 126         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 127   }
 128
 129   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 130     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 131     cpu_Cas01_im_t host = surf_cpu_resource_by_name(elm);
 132
 133     xbt_assert(host, "Host %s undefined", elm);
 134     xbt_assert(trace, "Trace %s undefined", trace_name);
 135
 136     host->power_event =
 137         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 138   }
 139 }
 140
 141 static void cpu_im_define_callbacks()
 142 {
 143   sg_platf_host_add_cb(parse_cpu_im_init);
 144   sg_platf_postparse_add_cb(cpu_im_add_traces_cpu);
 145 }
 146
 147 static int cpu_im_resource_used(void *resource)
 148 {
 149   return lmm_constraint_used(cpu_im_maxmin_system,
 150                              ((cpu_Cas01_im_t) resource)->constraint);
 151 }
 152
 153 static int cpu_im_action_unref(surf_action_t action)
 154 {
 155   action->refcount--;
 156   if (!action->refcount) {
 157     xbt_swag_remove(action, action->state_set);
 158     if (((surf_action_lmm_t) action)->variable)
 159       lmm_variable_free(cpu_im_maxmin_system,
 160                         ((surf_action_lmm_t) action)->variable);
 161     if(!strcmp(surf_cpu_model->name,"CPU_IM")){
 162     /* remove from heap */
 163     xbt_heap_remove(cpu_im_action_heap,
 164                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 165     xbt_swag_remove(action,
 166                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 167     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 168     }
 169 #ifdef HAVE_TRACING
 170     xbt_free(action->category);
 171 #endif
 172     surf_action_free(&action);
 173     return 1;
 174   }
 175   return 0;
 176 }
 177
 178 static void cpu_im_action_cancel(surf_action_t action)
 179 {
 180   surf_action_state_set(action, SURF_ACTION_FAILED);
 181   if(!strcmp(surf_cpu_model->name,"CPU_IM")){
 182   xbt_heap_remove(cpu_im_action_heap,
 183                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 184   xbt_swag_remove(action,
 185                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 186   }
 187   return;
 188 }
 189
 190 static void cpu_im_cpu_action_state_set(surf_action_t action,
 191                                         e_surf_action_state_t state)
 192 {
 193 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 194 /*     if(((surf_action_lmm_t)action)->variable) { */
 195 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 196 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 197 /*     } */
 198
 199   surf_action_state_set(action, state);
 200   return;
 201 }
 202
 203 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 204 {
 205   surf_action_cpu_Cas01_im_t action;
 206
 207   if (cpu->last_update >= now)
 208     return;
 209   xbt_swag_foreach(action, cpu->action_set) {
 210     if (GENERIC_ACTION(action).state_set !=
 211         surf_cpu_model->states.running_action_set)
 212       continue;
 213
 214     /* bogus priority, skip it */
 215     if (GENERIC_ACTION(action).priority <= 0)
 216       continue;
 217
 218     if (GENERIC_ACTION(action).remains > 0) {
 219       double_update(&(GENERIC_ACTION(action).remains),
 220                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 221                                           (action).variable) * (now -
 222                                                                 cpu->last_update));
 223 #ifdef HAVE_TRACING
 224       if (TRACE_is_enabled()) {
 225         TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 226                                         action->
 227                                         generic_lmm_action.generic_action.
 228                                         data, (surf_action_t) action,
 229                                         lmm_variable_getvalue
 230                                         (GENERIC_LMM_ACTION
 231                                          (action).variable),
 232                                         cpu->last_update,
 233                                         now - cpu->last_update);
 234       }
 235 #endif
 236       XBT_DEBUG("Update action(%p) remains %lf", action,
 237              GENERIC_ACTION(action).remains);
 238     }
 239   }
 240   cpu->last_update = now;
 241 }
 242
 243 static double cpu_im_share_resources(double now)
 244 {
 245   surf_action_cpu_Cas01_im_t action;
 246   double min;
 247   double value;
 248   cpu_Cas01_im_t cpu, cpu_next;
 249
 250   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 251       cpu_im_update_remains(cpu, now);
 252
 253   lmm_solve(cpu_im_maxmin_system);
 254
 255   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 256     xbt_swag_foreach(action, cpu->action_set) {
 257       if (GENERIC_ACTION(action).state_set !=
 258           surf_cpu_model->states.running_action_set)
 259         continue;
 260
 261       /* bogus priority, skip it */
 262       if (GENERIC_ACTION(action).priority <= 0)
 263         continue;
 264
 265       min = -1;
 266       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 267       if (value > 0) {
 268         if (GENERIC_ACTION(action).remains > 0) {
 269           value = GENERIC_ACTION(action).remains / value;
 270           min = now + value;
 271         } else {
 272           value = 0.0;
 273           min = now;
 274         }
 275       }
 276
 277       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 278           && (min == -1
 279               || GENERIC_ACTION(action).start +
 280               GENERIC_ACTION(action).max_duration < min))
 281         min =
 282             GENERIC_ACTION(action).start +
 283             GENERIC_ACTION(action).max_duration;
 284
 285       XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 286              GENERIC_ACTION(action).start, now + value,
 287              GENERIC_ACTION(action).max_duration);
 288
 289       if (action->index_heap >= 0) {
 290         surf_action_cpu_Cas01_im_t heap_act =
 291             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 292         if (heap_act != action)
 293           DIE_IMPOSSIBLE;
 294       }
 295       if (min != -1) {
 296         xbt_heap_push(cpu_im_action_heap, action, min);
 297         XBT_DEBUG("Insert at heap action(%p) min %lf", action, min);
 298       }
 299     }
 300     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 301   }
 302   return xbt_heap_size(cpu_im_action_heap) >
 303       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 304 }
 305
 306 static void cpu_im_update_actions_state(double now, double delta)
 307 {
 308   surf_action_cpu_Cas01_im_t action;
 309   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 310          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 311     action = xbt_heap_pop(cpu_im_action_heap);
 312     XBT_DEBUG("Action %p: finish", action);
 313     GENERIC_ACTION(action).finish = surf_get_clock();
 314     /* set the remains to 0 due to precision problems when updating the remaining amount */
 315 #ifdef HAVE_TRACING
 316     if (TRACE_is_enabled()) {
 317       cpu_Cas01_im_t cpu = ((cpu_Cas01_im_t)(action->cpu));
 318       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 319           GENERIC_LMM_ACTION(action).generic_action.data,
 320           (surf_action_t) action,
 321           lmm_variable_getvalue (GENERIC_LMM_ACTION(action).variable),
 322           cpu->last_update,
 323           now - cpu->last_update);
 324     }
 325 #endif
 326     GENERIC_ACTION(action).remains = 0;
 327     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 328     cpu_im_update_remains(action->cpu, surf_get_clock());
 329   }
 330 #ifdef HAVE_TRACING
 331   if (TRACE_is_enabled()) {
 332     //defining the last timestamp that we can safely dump to trace file
 333     //without losing the event ascending order (considering all CPU's)
 334     void **data;
 335     cpu_Cas01_im_t cpu;
 336     xbt_lib_cursor_t cursor;
 337     char *key;
 338     double smaller = -1;
 339     xbt_lib_foreach(host_lib, cursor, key, data){
 340       if(data[SURF_CPU_LEVEL]){
 341         cpu = data[SURF_CPU_LEVEL];
 342         if (smaller < 0){
 343           smaller = cpu->last_update;
 344           continue;
 345         }
 346         if (cpu->last_update < smaller){
 347           smaller = cpu->last_update;
 348         }
 349       }
 350     }
 351     if (smaller > 0) {
 352       TRACE_last_timestamp_to_dump = smaller;
 353     }
 354   }
 355 #endif
 356   return;
 357 }
 358
 359 static void cpu_im_update_resource_state(void *id,
 360                                          tmgr_trace_event_t event_type,
 361                                          double value, double date)
 362 {
 363   cpu_Cas01_im_t cpu = id;
 364   lmm_variable_t var = NULL;
 365   lmm_element_t elem = NULL;
 366
 367   if (event_type == cpu->power_event) {
 368     cpu->power_scale = value;
 369     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 370                                 cpu->core * cpu->power_scale * cpu->power_peak);
 371 #ifdef HAVE_TRACING
 372     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 373                               cpu->core * cpu->power_scale * cpu->power_peak);
 374 #endif
 375     while ((var = lmm_get_var_from_cnst
 376             (cpu_im_maxmin_system, cpu->constraint, &elem))) {
 377         surf_action_cpu_Cas01_im_t action = lmm_variable_id(var);
 378         lmm_update_variable_bound(cpu_im_maxmin_system, GENERIC_LMM_ACTION(action).variable,
 379                                   cpu->power_scale * cpu->power_peak);
 380     }
 381     if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 382       xbt_swag_insert(cpu, cpu_im_modified_cpu);
 383     if (tmgr_trace_event_free(event_type))
 384       cpu->power_event = NULL;
 385   } else if (event_type == cpu->state_event) {
 386     if (value > 0)
 387       cpu->state_current = SURF_RESOURCE_ON;
 388     else {
 389       lmm_constraint_t cnst = cpu->constraint;
 390       lmm_variable_t var = NULL;
 391       lmm_element_t elem = NULL;
 392
 393       cpu->state_current = SURF_RESOURCE_OFF;
 394
 395       while ((var =
 396               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 397         surf_action_t action = lmm_variable_id(var);
 398
 399         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 400             surf_action_state_get(action) == SURF_ACTION_READY ||
 401             surf_action_state_get(action) ==
 402             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 403           action->finish = date;
 404           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 405         }
 406       }
 407     }
 408     if (tmgr_trace_event_free(event_type))
 409       cpu->state_event = NULL;
 410   } else {
 411     XBT_CRITICAL("Unknown event ! \n");
 412     xbt_abort();
 413   }
 414
 415   return;
 416 }
 417
 418 static surf_action_t cpu_im_execute(void *cpu, double size)
 419 {
 420   surf_action_cpu_Cas01_im_t action = NULL;
 421   cpu_Cas01_im_t CPU = cpu;
 422
 423   XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
 424   action =
 425       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 426                       surf_cpu_model,
 427                       CPU->state_current != SURF_RESOURCE_ON);
 428
 429   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 430                                                    calloc but it seems to help valgrind... */
 431
 432   GENERIC_LMM_ACTION(action).variable =
 433       lmm_variable_new(cpu_im_maxmin_system, action,
 434                        GENERIC_ACTION(action).priority, CPU->power_scale * CPU->power_peak, 1);
 435   if(!strcmp(surf_cpu_model->name,"CPU_IM")){
 436     action->index_heap = -1;
 437     action->cpu = CPU;
 438     xbt_swag_insert(CPU, cpu_im_modified_cpu);
 439     xbt_swag_insert(action, CPU->action_set);
 440   }
 441   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 442              GENERIC_LMM_ACTION(action).variable, 1.0);
 443   XBT_OUT();
 444   return (surf_action_t) action;
 445 }
 446
 447 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 448 {
 449   surf_action_cpu_Cas01_im_t action = NULL;
 450
 451   if (duration > 0)
 452     duration = MAX(duration, MAXMIN_PRECISION);
 453
 454   XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
 455   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 456   GENERIC_ACTION(action).max_duration = duration;
 457   GENERIC_LMM_ACTION(action).suspended = 2;
 458   if (duration == NO_MAX_DURATION) {
 459     /* Move to the *end* of the corresponding action set. This convention
 460        is used to speed up update_resource_state  */
 461     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 462     ((surf_action_t) action)->state_set =
 463         cpu_im_running_action_set_that_does_not_need_being_checked;
 464     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 465   }
 466
 467   lmm_update_variable_weight(cpu_im_maxmin_system,
 468                              GENERIC_LMM_ACTION(action).variable, 0.0);
 469   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 470     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 471   XBT_OUT();
 472   return (surf_action_t) action;
 473 }
 474
 475 static void cpu_im_action_suspend(surf_action_t action)
 476 {
 477   XBT_IN("(%p)", action);
 478   if (((surf_action_lmm_t) action)->suspended != 2) {
 479     lmm_update_variable_weight(cpu_im_maxmin_system,
 480                                ((surf_action_lmm_t) action)->variable,
 481                                0.0);
 482     ((surf_action_lmm_t) action)->suspended = 1;
 483     if(!strcmp(surf_cpu_model->name,"CPU_IM")){
 484       xbt_heap_remove(cpu_im_action_heap,
 485                       ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 486       xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 487     }
 488   }
 489   XBT_OUT();
 490 }
 491
 492 static void cpu_im_action_resume(surf_action_t action)
 493 {
 494
 495   XBT_IN("(%p)", action);
 496   if (((surf_action_lmm_t) action)->suspended != 2) {
 497     lmm_update_variable_weight(cpu_im_maxmin_system,
 498                                ((surf_action_lmm_t) action)->variable,
 499                                action->priority);
 500     ((surf_action_lmm_t) action)->suspended = 0;
 501     if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 502       xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 503   }
 504   XBT_OUT();
 505 }
 506
 507 static int cpu_im_action_is_suspended(surf_action_t action)
 508 {
 509   return (((surf_action_lmm_t) action)->suspended == 1);
 510 }
 511
 512 static void cpu_im_action_set_max_duration(surf_action_t action,
 513                                            double duration)
 514 {
 515   XBT_IN("(%p,%g)", action, duration);
 516
 517   action->max_duration = duration;
 518   /* insert cpu in modified_cpu set to notice the max duration change */
 519   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 520     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 521   XBT_OUT();
 522 }
 523
 524 static void cpu_im_action_set_priority(surf_action_t action,
 525                                        double priority)
 526 {
 527   XBT_IN("(%p,%g)", action, priority);
 528   action->priority = priority;
 529   lmm_update_variable_weight(cpu_im_maxmin_system,
 530                              ((surf_action_lmm_t) action)->variable,
 531                              priority);
 532
 533   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 534     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 535   XBT_OUT();
 536 }
 537
 538 #ifdef HAVE_TRACING
 539 static void cpu_im_action_set_category(surf_action_t action,
 540                                        const char *category)
 541 {
 542   XBT_IN("(%p,%s)", action, category);
 543   action->category = xbt_strdup (category);
 544   XBT_OUT();
 545 }
 546 #endif
 547
 548 static double cpu_im_action_get_remains(surf_action_t action)
 549 {
 550   XBT_IN("(%p)", action);
 551   /* update remains before return it */
 552   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 553     cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 554   return action->remains;
 555   XBT_OUT();
 556 }
 557
 558 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 559 {
 560   return ((cpu_Cas01_im_t) cpu)->state_current;
 561 }
 562
 563 static double cpu_im_get_speed(void *cpu, double load)
 564 {
 565   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 566 }
 567
 568 static double cpu_im_get_available_speed(void *cpu)
 569 {
 570   /* number between 0 and 1 */
 571   return ((cpu_Cas01_im_t) cpu)->power_scale;
 572 }
 573
 574 static void cpu_im_action_update_index_heap(void *action, int i)
 575 {
 576   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 577 }
 578
 579 static void cpu_im_finalize(void)
 580 {
 581   void **cpu;
 582   xbt_lib_cursor_t cursor;
 583   char *key;
 584
 585   xbt_lib_foreach(host_lib, cursor, key, cpu){
 586     if(cpu[SURF_CPU_LEVEL])
 587     {
 588         cpu_Cas01_im_t CPU = cpu[SURF_CPU_LEVEL];
 589         xbt_swag_free(CPU->action_set);
 590     }
 591   }
 592
 593   lmm_system_free(cpu_im_maxmin_system);
 594   cpu_im_maxmin_system = NULL;
 595
 596   surf_model_exit(surf_cpu_model);
 597   surf_cpu_model = NULL;
 598
 599   xbt_swag_free
 600       (cpu_im_running_action_set_that_does_not_need_being_checked);
 601   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 602   if(cpu_im_action_heap)  xbt_heap_free(cpu_im_action_heap);
 603   if(cpu_im_modified_cpu) xbt_swag_free(cpu_im_modified_cpu);
 604 }
 605
 606 static void surf_cpu_im_model_init_internal(const char* name)
 607 {
 608   s_surf_action_t action;
 609   s_cpu_Cas01_im_t cpu;
 610
 611   surf_cpu_model = surf_model_init();
 612
 613   cpu_im_running_action_set_that_does_not_need_being_checked =
 614       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 615
 616   surf_cpu_model->name = name;
 617
 618   surf_cpu_model->action_unref = cpu_im_action_unref;
 619   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 620   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 621
 622   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 623   surf_cpu_model->model_private->share_resources = generic_share_resources;
 624   surf_cpu_model->model_private->update_actions_state =
 625       generic_update_actions_state;//ok
 626   surf_cpu_model->model_private->update_resource_state =
 627       cpu_im_update_resource_state;//ok
 628   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 629
 630   surf_cpu_model->suspend = cpu_im_action_suspend;
 631   surf_cpu_model->resume = cpu_im_action_resume;
 632   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 633   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 634   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 635 #ifdef HAVE_TRACING
 636   surf_cpu_model->set_category = cpu_im_action_set_category;
 637 #endif
 638   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 639
 640   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 641   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 642
 643   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 644   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 645   surf_cpu_model->extension.cpu.get_available_speed =
 646       cpu_im_get_available_speed;
 647   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 648   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 649
 650   if (!cpu_im_maxmin_system) {
 651     sg_maxmin_selective_update = 1;
 652     cpu_im_maxmin_system = lmm_system_new();
 653   }
 654   if(!strcmp(surf_cpu_model->name,"CPU_IM")){
 655     cpu_im_action_heap = xbt_heap_new(8, NULL);
 656     xbt_heap_set_update_callback(cpu_im_action_heap,
 657                                  cpu_im_action_update_index_heap);
 658     cpu_im_modified_cpu =
 659         xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 660   }
 661 }
 662
 663 /*********************************************************************/
 664 /* Basic sharing model for CPU: that is where all this started... ;) */
 665 /*********************************************************************/
 666 /* @InProceedings{casanova01simgrid, */
 667 /*   author =       "H. Casanova", */
 668 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 669 /*                  and the Grid (CCGrid'01)", */
 670 /*   publisher =    "IEEE Computer Society", */
 671 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 672 /*                  Scheduling", */
 673 /*   year =         "2001", */
 674 /*   month =        may, */
 675 /*   note =         "Available at */
 676 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 677 /* } */
 678
 679 void surf_cpu_model_init_Cas01_im()
 680 {
 681   char* name;
 682   if( strcmp(xbt_cfg_get_string(_surf_cfg_set, "cpu/model"),"Cas01"))
 683       name = "CPU";
 684   else
 685       name = "CPU_IM";
 686
 687 //  XBT_INFO("cpu model: %s",name);
 688
 689   if (surf_cpu_model)
 690     return;
 691   surf_cpu_im_model_init_internal(name);
 692   cpu_im_define_callbacks();
 693   xbt_dynar_push(model_list, &surf_cpu_model);
 694 }
 695
 696 double generic_share_resources(double now)
 697 {
 698   surf_action_cpu_Cas01_im_t action;
 699   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 700     return cpu_im_share_resources(now);
 701   else if(!strcmp(surf_cpu_model->name,"CPU"))
 702   {
 703     return generic_maxmin_share_resources(surf_cpu_model->states.running_action_set,
 704         xbt_swag_offset(*action, generic_lmm_action.variable),
 705         cpu_im_maxmin_system, lmm_solve);
 706   }
 707   xbt_die("Not recognized surf cpu model!");
 708   return 0;
 709 }
 710
 711 static void cpu_update_actions_state(double now, double delta)
 712 {
 713   surf_action_cpu_Cas01_im_t action = NULL;
 714   surf_action_cpu_Cas01_im_t next_action = NULL;
 715   xbt_swag_t running_actions = surf_cpu_model->states.running_action_set;
 716   xbt_swag_foreach_safe(action, next_action, running_actions) {
 717 #ifdef HAVE_TRACING
 718     if (TRACE_is_enabled()) {
 719       cpu_Cas01_t x =
 720         lmm_constraint_id(lmm_get_cnst_from_var
 721                           (cpu_maxmin_system, action->variable, 0));
 722
 723       TRACE_surf_host_set_utilization(x->generic_resource.name,
 724                                       action->generic_action.data,
 725                                       (surf_action_t) action,
 726                                       lmm_variable_getvalue
 727                                       (action->variable), now - delta,
 728                                       delta);
 729       TRACE_last_timestamp_to_dump = now-delta;
 730     }
 731 #endif
 732     double_update(&(GENERIC_ACTION(action).remains),
 733                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
 734     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
 735       double_update(&(GENERIC_ACTION(action).max_duration), delta);
 736     if ((GENERIC_ACTION(action).remains <= 0) &&
 737         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
 738       GENERIC_ACTION(action).finish = surf_get_clock();
 739       cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 740     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
 741                (GENERIC_ACTION(action).max_duration <= 0)) {
 742       GENERIC_ACTION(action).finish = surf_get_clock();
 743       cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 744     }
 745   }
 746
 747   return;
 748 }
 749
 750 void generic_update_actions_state(double now, double delta)
 751 {
 752   if(!strcmp(surf_cpu_model->name,"CPU_IM"))
 753     cpu_im_update_actions_state(now, delta);
 754   else if(!strcmp(surf_cpu_model->name,"CPU"))
 755   {
 756     cpu_update_actions_state(now, delta);
 757   }
 758   else
 759     xbt_die("Not recognized surf cpu model!");
 760 }