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 typedef enum {
  14   UM_FULL,
  15   UM_LAZY,
  16   UM_UNDEFINED,
  17 } e_UM_t;
  18
  19 e_UM_t update_mechanism = UM_LAZY;
  20
  21 #undef GENERIC_LMM_ACTION
  22 #undef GENERIC_ACTION
  23 #undef ACTION_GET_CPU
  24 #define GENERIC_LMM_ACTION(action) action->generic_lmm_action
  25 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
  26 #define ACTION_GET_CPU(action) ((surf_action_cpu_Cas01_im_t) action)->cpu
  27
  28 typedef struct surf_action_cpu_cas01_im {
  29   s_surf_action_lmm_t generic_lmm_action;
  30   s_xbt_swag_hookup_t cpu_list_hookup;
  31   int index_heap;
  32   void *cpu;
  33 } s_surf_action_cpu_Cas01_im_t, *surf_action_cpu_Cas01_im_t;
  34
  35 typedef struct cpu_Cas01_im {
  36   s_surf_resource_t generic_resource;
  37   s_xbt_swag_hookup_t modified_cpu_hookup;
  38   double power_peak;
  39   double power_scale;
  40   tmgr_trace_event_t power_event;
  41   int core;
  42   e_surf_resource_state_t state_current;
  43   tmgr_trace_event_t state_event;
  44   lmm_constraint_t constraint;
  45   xbt_swag_t action_set;
  46   double last_update;
  47 } s_cpu_Cas01_im_t, *cpu_Cas01_im_t;
  48
  49 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_im, surf,
  50                                 "Logging specific to the SURF CPU IMPROVED module");
  51
  52 lmm_system_t cpu_im_maxmin_system = NULL;
  53 static xbt_swag_t cpu_im_modified_cpu = NULL;
  54 static xbt_heap_t cpu_im_action_heap = NULL;
  55 extern int sg_maxmin_selective_update;
  56
  57
  58 static xbt_swag_t
  59     cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
  60
  61 static void* cpu_im_create_resource(const char *name, double power_peak,
  62                                  double power_scale,
  63                                  tmgr_trace_t power_trace,
  64                                  int core,
  65                                  e_surf_resource_state_t state_initial,
  66                                  tmgr_trace_t state_trace,
  67                                  xbt_dict_t cpu_properties)
  68 {
  69   cpu_Cas01_im_t cpu = NULL;
  70   s_surf_action_cpu_Cas01_im_t action;
  71
  72   xbt_assert(!surf_cpu_resource_by_name(name),
  73               "Host '%s' declared several times in the platform file",
  74               name);
  75   cpu = (cpu_Cas01_im_t) surf_resource_new(sizeof(s_cpu_Cas01_im_t),
  76           surf_cpu_model, name,cpu_properties);
  77   cpu->power_peak = power_peak;
  78   xbt_assert(cpu->power_peak > 0, "Power has to be >0");
  79   cpu->power_scale = power_scale;
  80   cpu->core = core;
  81   xbt_assert(core>0,"Invalid number of cores %d",core);
  82
  83   if (power_trace)
  84     cpu->power_event =
  85         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  86
  87   cpu->state_current = state_initial;
  88   if (state_trace)
  89     cpu->state_event =
  90         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  91
  92   cpu->constraint =
  93       lmm_constraint_new(cpu_im_maxmin_system, cpu,
  94                          cpu->core * cpu->power_scale * cpu->power_peak);
  95
  96   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
  97   if(update_mechanism == UM_FULL)
  98     cpu->action_set = xbt_swag_new(xbt_swag_offset(action, cpu_list_hookup));
  99
 100   return cpu;
 101 }
 102
 103
 104 static void parse_cpu_im_init(sg_platf_host_cbarg_t host)
 105 {
 106         cpu_im_create_resource(host->id,
 107                           host->power_peak,
 108                           host->power_scale,
 109                           host->power_trace,
 110                           host->core_amount,
 111                           host->initial_state,
 112                           host->state_trace,
 113                           host->properties);
 114 }
 115
 116 static void cpu_im_add_traces_cpu(void)
 117 {
 118   xbt_dict_cursor_t cursor = NULL;
 119   char *trace_name, *elm;
 120   static int called = 0;
 121   if (called)
 122     return;
 123   called = 1;
 124
 125   /* connect all traces relative to hosts */
 126   xbt_dict_foreach(trace_connect_list_host_avail, 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->state_event =
 134         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 135   }
 136
 137   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 138     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 139     cpu_Cas01_im_t host = surf_cpu_resource_by_name(elm);
 140
 141     xbt_assert(host, "Host %s undefined", elm);
 142     xbt_assert(trace, "Trace %s undefined", trace_name);
 143
 144     host->power_event =
 145         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 146   }
 147 }
 148
 149 static void cpu_im_define_callbacks()
 150 {
 151   sg_platf_host_add_cb(parse_cpu_im_init);
 152   sg_platf_postparse_add_cb(cpu_im_add_traces_cpu);
 153 }
 154
 155 static int cpu_im_resource_used(void *resource)
 156 {
 157   return lmm_constraint_used(cpu_im_maxmin_system,
 158                              ((cpu_Cas01_im_t) resource)->constraint);
 159 }
 160
 161 static int cpu_im_action_unref(surf_action_t action)
 162 {
 163   action->refcount--;
 164   if (!action->refcount) {
 165     xbt_swag_remove(action, action->state_set);
 166     if (((surf_action_lmm_t) action)->variable)
 167       lmm_variable_free(cpu_im_maxmin_system,
 168                         ((surf_action_lmm_t) action)->variable);
 169     if(update_mechanism == UM_FULL){
 170     /* remove from heap */
 171     xbt_heap_remove(cpu_im_action_heap,
 172                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 173     xbt_swag_remove(action,
 174                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 175     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 176     }
 177 #ifdef HAVE_TRACING
 178     xbt_free(action->category);
 179 #endif
 180     surf_action_free(&action);
 181     return 1;
 182   }
 183   return 0;
 184 }
 185
 186 static void cpu_im_action_cancel(surf_action_t action)
 187 {
 188   surf_action_state_set(action, SURF_ACTION_FAILED);
 189   if(update_mechanism == UM_FULL){
 190   xbt_heap_remove(cpu_im_action_heap,
 191                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 192   xbt_swag_remove(action,
 193                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 194   }
 195   return;
 196 }
 197
 198 static void cpu_im_cpu_action_state_set(surf_action_t action,
 199                                         e_surf_action_state_t state)
 200 {
 201 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 202 /*     if(((surf_action_lmm_t)action)->variable) { */
 203 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 204 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 205 /*     } */
 206
 207   surf_action_state_set(action, state);
 208   return;
 209 }
 210
 211 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 212 {
 213   surf_action_cpu_Cas01_im_t action;
 214
 215   if (cpu->last_update >= now)
 216     return;
 217   xbt_swag_foreach(action, cpu->action_set) {
 218     if (GENERIC_ACTION(action).state_set !=
 219         surf_cpu_model->states.running_action_set)
 220       continue;
 221
 222     /* bogus priority, skip it */
 223     if (GENERIC_ACTION(action).priority <= 0)
 224       continue;
 225
 226     if (GENERIC_ACTION(action).remains > 0) {
 227       double_update(&(GENERIC_ACTION(action).remains),
 228                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 229                                           (action).variable) * (now -
 230                                                                 cpu->last_update));
 231 #ifdef HAVE_TRACING
 232       if (TRACE_is_enabled()) {
 233         TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 234                                         action->
 235                                         generic_lmm_action.generic_action.
 236                                         data, (surf_action_t) action,
 237                                         lmm_variable_getvalue
 238                                         (GENERIC_LMM_ACTION
 239                                          (action).variable),
 240                                         cpu->last_update,
 241                                         now - cpu->last_update);
 242       }
 243 #endif
 244       XBT_DEBUG("Update action(%p) remains %lf", action,
 245              GENERIC_ACTION(action).remains);
 246     }
 247   }
 248   cpu->last_update = now;
 249 }
 250
 251 static double cpu_im_share_resources(double now)
 252 {
 253   surf_action_cpu_Cas01_im_t action;
 254   double min;
 255   double value;
 256   cpu_Cas01_im_t cpu, cpu_next;
 257
 258   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 259       cpu_im_update_remains(cpu, now);
 260
 261   lmm_solve(cpu_im_maxmin_system);
 262
 263   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 264     xbt_swag_foreach(action, cpu->action_set) {
 265       if (GENERIC_ACTION(action).state_set !=
 266           surf_cpu_model->states.running_action_set)
 267         continue;
 268
 269       /* bogus priority, skip it */
 270       if (GENERIC_ACTION(action).priority <= 0)
 271         continue;
 272
 273       min = -1;
 274       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 275       if (value > 0) {
 276         if (GENERIC_ACTION(action).remains > 0) {
 277           value = GENERIC_ACTION(action).remains / value;
 278           min = now + value;
 279         } else {
 280           value = 0.0;
 281           min = now;
 282         }
 283       }
 284
 285       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 286           && (min == -1
 287               || GENERIC_ACTION(action).start +
 288               GENERIC_ACTION(action).max_duration < min))
 289         min =
 290             GENERIC_ACTION(action).start +
 291             GENERIC_ACTION(action).max_duration;
 292
 293       XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 294              GENERIC_ACTION(action).start, now + value,
 295              GENERIC_ACTION(action).max_duration);
 296
 297       if (action->index_heap >= 0) {
 298         surf_action_cpu_Cas01_im_t heap_act =
 299             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 300         if (heap_act != action)
 301           DIE_IMPOSSIBLE;
 302       }
 303       if (min != -1) {
 304         xbt_heap_push(cpu_im_action_heap, action, min);
 305         XBT_DEBUG("Insert at heap action(%p) min %lf", action, min);
 306       }
 307     }
 308     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 309   }
 310   return xbt_heap_size(cpu_im_action_heap) >
 311       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 312 }
 313
 314 static void cpu_im_update_actions_state(double now, double delta)
 315 {
 316   surf_action_cpu_Cas01_im_t action;
 317   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 318          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 319     action = xbt_heap_pop(cpu_im_action_heap);
 320     XBT_DEBUG("Action %p: finish", action);
 321     GENERIC_ACTION(action).finish = surf_get_clock();
 322     /* set the remains to 0 due to precision problems when updating the remaining amount */
 323 #ifdef HAVE_TRACING
 324     if (TRACE_is_enabled()) {
 325       cpu_Cas01_im_t cpu = ((cpu_Cas01_im_t)(action->cpu));
 326       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 327           GENERIC_LMM_ACTION(action).generic_action.data,
 328           (surf_action_t) action,
 329           lmm_variable_getvalue (GENERIC_LMM_ACTION(action).variable),
 330           cpu->last_update,
 331           now - cpu->last_update);
 332     }
 333 #endif
 334     GENERIC_ACTION(action).remains = 0;
 335     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 336     cpu_im_update_remains(action->cpu, surf_get_clock());
 337   }
 338 #ifdef HAVE_TRACING
 339   if (TRACE_is_enabled()) {
 340     //defining the last timestamp that we can safely dump to trace file
 341     //without losing the event ascending order (considering all CPU's)
 342     void **data;
 343     cpu_Cas01_im_t cpu;
 344     xbt_lib_cursor_t cursor;
 345     char *key;
 346     double smaller = -1;
 347     xbt_lib_foreach(host_lib, cursor, key, data){
 348       if(data[SURF_CPU_LEVEL]){
 349         cpu = data[SURF_CPU_LEVEL];
 350         if (smaller < 0){
 351           smaller = cpu->last_update;
 352           continue;
 353         }
 354         if (cpu->last_update < smaller){
 355           smaller = cpu->last_update;
 356         }
 357       }
 358     }
 359     if (smaller > 0) {
 360       TRACE_last_timestamp_to_dump = smaller;
 361     }
 362   }
 363 #endif
 364   return;
 365 }
 366
 367 static void cpu_im_update_resource_state(void *id,
 368                                          tmgr_trace_event_t event_type,
 369                                          double value, double date)
 370 {
 371   cpu_Cas01_im_t cpu = id;
 372   lmm_variable_t var = NULL;
 373   lmm_element_t elem = NULL;
 374
 375   if (event_type == cpu->power_event) {
 376     cpu->power_scale = value;
 377     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 378                                 cpu->core * cpu->power_scale * cpu->power_peak);
 379 #ifdef HAVE_TRACING
 380     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 381                               cpu->core * cpu->power_scale * cpu->power_peak);
 382 #endif
 383     while ((var = lmm_get_var_from_cnst
 384             (cpu_im_maxmin_system, cpu->constraint, &elem))) {
 385         surf_action_cpu_Cas01_im_t action = lmm_variable_id(var);
 386         lmm_update_variable_bound(cpu_im_maxmin_system, GENERIC_LMM_ACTION(action).variable,
 387                                   cpu->power_scale * cpu->power_peak);
 388     }
 389     if(update_mechanism == UM_FULL)
 390       xbt_swag_insert(cpu, cpu_im_modified_cpu);
 391     if (tmgr_trace_event_free(event_type))
 392       cpu->power_event = NULL;
 393   } else if (event_type == cpu->state_event) {
 394     if (value > 0)
 395       cpu->state_current = SURF_RESOURCE_ON;
 396     else {
 397       lmm_constraint_t cnst = cpu->constraint;
 398       lmm_variable_t var = NULL;
 399       lmm_element_t elem = NULL;
 400
 401       cpu->state_current = SURF_RESOURCE_OFF;
 402
 403       while ((var =
 404               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 405         surf_action_t action = lmm_variable_id(var);
 406
 407         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 408             surf_action_state_get(action) == SURF_ACTION_READY ||
 409             surf_action_state_get(action) ==
 410             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 411           action->finish = date;
 412           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 413         }
 414       }
 415     }
 416     if (tmgr_trace_event_free(event_type))
 417       cpu->state_event = NULL;
 418   } else {
 419     XBT_CRITICAL("Unknown event ! \n");
 420     xbt_abort();
 421   }
 422
 423   return;
 424 }
 425
 426 static surf_action_t cpu_im_execute(void *cpu, double size)
 427 {
 428   surf_action_cpu_Cas01_im_t action = NULL;
 429   cpu_Cas01_im_t CPU = cpu;
 430
 431   XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
 432   action =
 433       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 434                       surf_cpu_model,
 435                       CPU->state_current != SURF_RESOURCE_ON);
 436
 437   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 438                                                    calloc but it seems to help valgrind... */
 439
 440   GENERIC_LMM_ACTION(action).variable =
 441       lmm_variable_new(cpu_im_maxmin_system, action,
 442                        GENERIC_ACTION(action).priority, CPU->power_scale * CPU->power_peak, 1);
 443   if(update_mechanism == UM_FULL){
 444     action->index_heap = -1;
 445     action->cpu = CPU;
 446     xbt_swag_insert(CPU, cpu_im_modified_cpu);
 447     xbt_swag_insert(action, CPU->action_set);
 448   }
 449   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 450              GENERIC_LMM_ACTION(action).variable, 1.0);
 451   XBT_OUT();
 452   return (surf_action_t) action;
 453 }
 454
 455 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 456 {
 457   surf_action_cpu_Cas01_im_t action = NULL;
 458
 459   if (duration > 0)
 460     duration = MAX(duration, MAXMIN_PRECISION);
 461
 462   XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
 463   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 464   GENERIC_ACTION(action).max_duration = duration;
 465   GENERIC_LMM_ACTION(action).suspended = 2;
 466   if (duration == NO_MAX_DURATION) {
 467     /* Move to the *end* of the corresponding action set. This convention
 468        is used to speed up update_resource_state  */
 469     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 470     ((surf_action_t) action)->state_set =
 471         cpu_im_running_action_set_that_does_not_need_being_checked;
 472     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 473   }
 474
 475   lmm_update_variable_weight(cpu_im_maxmin_system,
 476                              GENERIC_LMM_ACTION(action).variable, 0.0);
 477   if(update_mechanism == UM_FULL)
 478     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 479   XBT_OUT();
 480   return (surf_action_t) action;
 481 }
 482
 483 static void cpu_im_action_suspend(surf_action_t action)
 484 {
 485   XBT_IN("(%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                                0.0);
 490     ((surf_action_lmm_t) action)->suspended = 1;
 491     if(update_mechanism == UM_FULL){
 492       xbt_heap_remove(cpu_im_action_heap,
 493                       ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 494       xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 495     }
 496   }
 497   XBT_OUT();
 498 }
 499
 500 static void cpu_im_action_resume(surf_action_t action)
 501 {
 502
 503   XBT_IN("(%p)", action);
 504   if (((surf_action_lmm_t) action)->suspended != 2) {
 505     lmm_update_variable_weight(cpu_im_maxmin_system,
 506                                ((surf_action_lmm_t) action)->variable,
 507                                action->priority);
 508     ((surf_action_lmm_t) action)->suspended = 0;
 509     if(update_mechanism == UM_FULL)
 510       xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 511   }
 512   XBT_OUT();
 513 }
 514
 515 static int cpu_im_action_is_suspended(surf_action_t action)
 516 {
 517   return (((surf_action_lmm_t) action)->suspended == 1);
 518 }
 519
 520 static void cpu_im_action_set_max_duration(surf_action_t action,
 521                                            double duration)
 522 {
 523   XBT_IN("(%p,%g)", action, duration);
 524
 525   action->max_duration = duration;
 526   /* insert cpu in modified_cpu set to notice the max duration change */
 527   if(update_mechanism == UM_FULL)
 528     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 529   XBT_OUT();
 530 }
 531
 532 static void cpu_im_action_set_priority(surf_action_t action,
 533                                        double priority)
 534 {
 535   XBT_IN("(%p,%g)", action, priority);
 536   action->priority = priority;
 537   lmm_update_variable_weight(cpu_im_maxmin_system,
 538                              ((surf_action_lmm_t) action)->variable,
 539                              priority);
 540
 541   if(update_mechanism == UM_FULL)
 542     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 543   XBT_OUT();
 544 }
 545
 546 #ifdef HAVE_TRACING
 547 static void cpu_im_action_set_category(surf_action_t action,
 548                                        const char *category)
 549 {
 550   XBT_IN("(%p,%s)", action, category);
 551   action->category = xbt_strdup (category);
 552   XBT_OUT();
 553 }
 554 #endif
 555
 556 static double cpu_im_action_get_remains(surf_action_t action)
 557 {
 558   XBT_IN("(%p)", action);
 559   /* update remains before return it */
 560   if(update_mechanism == UM_FULL)
 561     cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 562   return action->remains;
 563   XBT_OUT();
 564 }
 565
 566 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 567 {
 568   return ((cpu_Cas01_im_t) cpu)->state_current;
 569 }
 570
 571 static double cpu_im_get_speed(void *cpu, double load)
 572 {
 573   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 574 }
 575
 576 static double cpu_im_get_available_speed(void *cpu)
 577 {
 578   /* number between 0 and 1 */
 579   return ((cpu_Cas01_im_t) cpu)->power_scale;
 580 }
 581
 582 static void cpu_im_action_update_index_heap(void *action, int i)
 583 {
 584   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 585 }
 586
 587 static void cpu_im_finalize(void)
 588 {
 589   void **cpu;
 590   xbt_lib_cursor_t cursor;
 591   char *key;
 592
 593   xbt_lib_foreach(host_lib, cursor, key, cpu){
 594     if(cpu[SURF_CPU_LEVEL])
 595     {
 596         cpu_Cas01_im_t CPU = cpu[SURF_CPU_LEVEL];
 597         xbt_swag_free(CPU->action_set);
 598     }
 599   }
 600
 601   lmm_system_free(cpu_im_maxmin_system);
 602   cpu_im_maxmin_system = NULL;
 603
 604   surf_model_exit(surf_cpu_model);
 605   surf_cpu_model = NULL;
 606
 607   xbt_swag_free
 608       (cpu_im_running_action_set_that_does_not_need_being_checked);
 609   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 610   if(cpu_im_action_heap)  xbt_heap_free(cpu_im_action_heap);
 611   if(cpu_im_modified_cpu) xbt_swag_free(cpu_im_modified_cpu);
 612 }
 613
 614 static void surf_cpu_im_model_init_internal(const char* name)
 615 {
 616   s_surf_action_t action;
 617   s_cpu_Cas01_im_t cpu;
 618
 619   surf_cpu_model = surf_model_init();
 620
 621   cpu_im_running_action_set_that_does_not_need_being_checked =
 622       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 623
 624   surf_cpu_model->name = name;
 625
 626   surf_cpu_model->action_unref = cpu_im_action_unref;
 627   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 628   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 629
 630   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 631   surf_cpu_model->model_private->share_resources = generic_share_resources;
 632   surf_cpu_model->model_private->update_actions_state =
 633       generic_update_actions_state;//ok
 634   surf_cpu_model->model_private->update_resource_state =
 635       cpu_im_update_resource_state;//ok
 636   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 637
 638   surf_cpu_model->suspend = cpu_im_action_suspend;
 639   surf_cpu_model->resume = cpu_im_action_resume;
 640   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 641   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 642   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 643 #ifdef HAVE_TRACING
 644   surf_cpu_model->set_category = cpu_im_action_set_category;
 645 #endif
 646   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 647
 648   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 649   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 650
 651   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 652   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 653   surf_cpu_model->extension.cpu.get_available_speed =
 654       cpu_im_get_available_speed;
 655   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 656   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 657
 658   if (!cpu_im_maxmin_system) {
 659     sg_maxmin_selective_update = 1;
 660     cpu_im_maxmin_system = lmm_system_new();
 661   }
 662   if(update_mechanism == UM_FULL){
 663     cpu_im_action_heap = xbt_heap_new(8, NULL);
 664     xbt_heap_set_update_callback(cpu_im_action_heap,
 665                                  cpu_im_action_update_index_heap);
 666     cpu_im_modified_cpu =
 667         xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 668   }
 669 }
 670
 671 /*********************************************************************/
 672 /* Basic sharing model for CPU: that is where all this started... ;) */
 673 /*********************************************************************/
 674 /* @InProceedings{casanova01simgrid, */
 675 /*   author =       "H. Casanova", */
 676 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 677 /*                  and the Grid (CCGrid'01)", */
 678 /*   publisher =    "IEEE Computer Society", */
 679 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 680 /*                  Scheduling", */
 681 /*   year =         "2001", */
 682 /*   month =        may, */
 683 /*   note =         "Available at */
 684 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 685 /* } */
 686
 687 void surf_cpu_model_init_Cas01_im()
 688 {
 689   char* name;
 690   if( strcmp(xbt_cfg_get_string(_surf_cfg_set, "cpu/model"),"Cas01"))
 691     update_mechanism = UM_FULL;
 692   else
 693     update_mechanism = UM_LAZY;
 694
 695   if (surf_cpu_model)
 696     return;
 697   surf_cpu_im_model_init_internal("CPU");
 698   cpu_im_define_callbacks();
 699   xbt_dynar_push(model_list, &surf_cpu_model);
 700 }
 701
 702 double generic_share_resources(double now)
 703 {
 704   surf_action_cpu_Cas01_im_t action;
 705   if(update_mechanism == UM_FULL)
 706     return cpu_im_share_resources(now);
 707   else if (update_mechanism == UM_LAZY)
 708   {
 709     return generic_maxmin_share_resources(surf_cpu_model->states.running_action_set,
 710         xbt_swag_offset(*action, generic_lmm_action.variable),
 711         cpu_im_maxmin_system, lmm_solve);
 712   } else {
 713     xbt_die("Invalide update mechanism!");
 714     return 0;
 715   }
 716 }
 717
 718 static void cpu_update_actions_state(double now, double delta)
 719 {
 720   surf_action_cpu_Cas01_im_t action = NULL;
 721   surf_action_cpu_Cas01_im_t next_action = NULL;
 722   xbt_swag_t running_actions = surf_cpu_model->states.running_action_set;
 723   xbt_swag_foreach_safe(action, next_action, running_actions) {
 724 #ifdef HAVE_TRACING
 725     if (TRACE_is_enabled()) {
 726       cpu_Cas01_im_t x =
 727         lmm_constraint_id(lmm_get_cnst_from_var
 728                           (cpu_maxmin_system, GENERIC_LMM_ACTION(action).variable, 0));
 729
 730       TRACE_surf_host_set_utilization(x->generic_resource.name,
 731                                       GENERIC_ACTION(action).data,
 732                                       (surf_action_t) action,
 733                                       lmm_variable_getvalue
 734                                       (GENERIC_LMM_ACTION(action).variable), now - delta,
 735                                       delta);
 736       TRACE_last_timestamp_to_dump = now-delta;
 737     }
 738 #endif
 739     double_update(&(GENERIC_ACTION(action).remains),
 740                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * delta);
 741     if (GENERIC_LMM_ACTION(action).generic_action.max_duration != NO_MAX_DURATION)
 742       double_update(&(GENERIC_ACTION(action).max_duration), delta);
 743     if ((GENERIC_ACTION(action).remains <= 0) &&
 744         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
 745       GENERIC_ACTION(action).finish = surf_get_clock();
 746       cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 747     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
 748                (GENERIC_ACTION(action).max_duration <= 0)) {
 749       GENERIC_ACTION(action).finish = surf_get_clock();
 750       cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 751     }
 752   }
 753
 754   return;
 755 }
 756
 757 void generic_update_actions_state(double now, double delta)
 758 {
 759   if(update_mechanism == UM_FULL)
 760     cpu_im_update_actions_state(now, delta);
 761   else if(update_mechanism == UM_LAZY)
 762   {
 763     cpu_update_actions_state(now, delta);
 764   }
 765   else
 766     xbt_die("Not recognized surf cpu model!");
 767 }