src/surf/cpu_cas01.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 #include "maxmin_private.h"
  10
  11 surf_model_t surf_cpu_model = 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_t) action)->cpu
  19
  20 typedef struct surf_action_cpu_cas01 {
  21   s_surf_action_lmm_t generic_lmm_action;
  22 } s_surf_action_cpu_Cas01_t, *surf_action_cpu_Cas01_t;
  23
  24 typedef struct cpu_Cas01 {
  25   s_surf_resource_t generic_resource;
  26   s_xbt_swag_hookup_t modified_cpu_hookup;
  27   double power_peak;
  28   double power_scale;
  29   tmgr_trace_event_t power_event;
  30   int core;
  31   e_surf_resource_state_t state_current;
  32   tmgr_trace_event_t state_event;
  33   lmm_constraint_t constraint;
  34 } s_cpu_Cas01_t, *cpu_Cas01_t;
  35
  36 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu, surf,
  37                                 "Logging specific to the SURF CPU IMPROVED module");
  38
  39
  40
  41 static xbt_swag_t
  42     cpu_running_action_set_that_does_not_need_being_checked = NULL;
  43
  44
  45 static void *cpu_create_resource(const char *name, double power_peak,
  46                                  double power_scale,
  47                                  tmgr_trace_t power_trace,
  48                                  int core,
  49                                  e_surf_resource_state_t state_initial,
  50                                  tmgr_trace_t state_trace,
  51                                  xbt_dict_t cpu_properties)
  52 {
  53   cpu_Cas01_t cpu = NULL;
  54
  55   xbt_assert(!surf_cpu_resource_by_name(name),
  56              "Host '%s' declared several times in the platform file",
  57              name);
  58   cpu = (cpu_Cas01_t) surf_resource_new(sizeof(s_cpu_Cas01_t),
  59                                         surf_cpu_model, name,
  60                                         cpu_properties);
  61   cpu->power_peak = power_peak;
  62   xbt_assert(cpu->power_peak > 0, "Power has to be >0");
  63   cpu->power_scale = power_scale;
  64   cpu->core = core;
  65   xbt_assert(core > 0, "Invalid number of cores %d", core);
  66
  67   if (power_trace)
  68     cpu->power_event =
  69         tmgr_history_add_trace(history, power_trace, 0.0, 0, cpu);
  70
  71   cpu->state_current = state_initial;
  72   if (state_trace)
  73     cpu->state_event =
  74         tmgr_history_add_trace(history, state_trace, 0.0, 0, cpu);
  75
  76   cpu->constraint =
  77       lmm_constraint_new(surf_cpu_model->maxmin_system, cpu,
  78                          cpu->core * cpu->power_scale * cpu->power_peak);
  79
  80   xbt_lib_set(host_lib, name, SURF_CPU_LEVEL, cpu);
  81
  82   return cpu;
  83 }
  84
  85
  86 static void parse_cpu_init(sg_platf_host_cbarg_t host)
  87 {
  88   cpu_create_resource(host->id,
  89                       host->power_peak,
  90                       host->power_scale,
  91                       host->power_trace,
  92                       host->core_amount,
  93                       host->initial_state,
  94                       host->state_trace, host->properties);
  95 }
  96
  97 static void cpu_add_traces_cpu(void)
  98 {
  99   xbt_dict_cursor_t cursor = NULL;
 100   char *trace_name, *elm;
 101   static int called = 0;
 102   if (called)
 103     return;
 104   called = 1;
 105
 106   /* connect all traces relative to hosts */
 107   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 108     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 109     cpu_Cas01_t host = surf_cpu_resource_by_name(elm);
 110
 111     xbt_assert(host, "Host %s undefined", elm);
 112     xbt_assert(trace, "Trace %s undefined", trace_name);
 113
 114     host->state_event =
 115         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 116   }
 117
 118   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 119     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 120     cpu_Cas01_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->power_event =
 126         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 127   }
 128 }
 129
 130 static void cpu_define_callbacks()
 131 {
 132   sg_platf_host_add_cb(parse_cpu_init);
 133   sg_platf_postparse_add_cb(cpu_add_traces_cpu);
 134 }
 135
 136 static int cpu_resource_used(void *resource)
 137 {
 138   return lmm_constraint_used(surf_cpu_model->maxmin_system,
 139                              ((cpu_Cas01_t) resource)->constraint);
 140 }
 141
 142 static int cpu_action_unref(surf_action_t action)
 143 {
 144   action->refcount--;
 145   if (!action->refcount) {
 146     xbt_swag_remove(action, action->state_set);
 147     if (((surf_action_lmm_t) action)->variable)
 148       lmm_variable_free(surf_cpu_model->maxmin_system,
 149                         ((surf_action_lmm_t) action)->variable);
 150     if (surf_cpu_model->update_mechanism == UM_LAZY) {
 151       /* remove from heap */
 152       surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 153       xbt_swag_remove(action, surf_cpu_model->modified_set);
 154     }
 155 #ifdef HAVE_TRACING
 156     xbt_free(action->category);
 157 #endif
 158     surf_action_free(&action);
 159     return 1;
 160   }
 161   return 0;
 162 }
 163
 164 static void cpu_action_cancel(surf_action_t action)
 165 {
 166   surf_action_state_set(action, SURF_ACTION_FAILED);
 167   if (surf_cpu_model->update_mechanism == UM_LAZY) {
 168     xbt_swag_remove(action, surf_cpu_model->modified_set);
 169     surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 170   }
 171   return;
 172 }
 173
 174 static void cpu_action_state_set(surf_action_t action,
 175                                      e_surf_action_state_t state)
 176 {
 177 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 178 /*     if(((surf_action_lmm_t)action)->variable) { */
 179 /*       lmm_variable_disable(surf_cpu_model->maxmin_system, ((surf_action_lmm_t)action)->variable); */
 180 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 181 /*     } */
 182
 183   surf_action_state_set(action, state);
 184   return;
 185 }
 186
 187 static void cpu_update_action_remaining_lazy(surf_action_cpu_Cas01_t action, double now)
 188 {
 189   double delta = 0.0;
 190
 191   xbt_assert(GENERIC_ACTION(action).state_set == surf_cpu_model->states.running_action_set,
 192       "You're updating an action that is not running.");
 193
 194     /* bogus priority, skip it */
 195   xbt_assert(GENERIC_ACTION(action).priority > 0,
 196       "You're updating an action that seems suspended.");
 197
 198   delta = now - GENERIC_LMM_ACTION(action).last_update;
 199   if (GENERIC_ACTION(action).remains > 0) {
 200     XBT_DEBUG("Updating action(%p): remains was %lf, last_update was: %lf", action,
 201         GENERIC_ACTION(action).remains,
 202         GENERIC_LMM_ACTION(action).last_update);
 203     double_update(&(GENERIC_ACTION(action).remains),
 204         GENERIC_LMM_ACTION(action).last_value * delta);
 205
 206 #ifdef HAVE_TRACING
 207     if (TRACE_is_enabled()) {
 208       cpu_Cas01_t cpu =
 209           lmm_constraint_id(lmm_get_cnst_from_var
 210               (surf_cpu_model->maxmin_system,
 211                   GENERIC_LMM_ACTION(action).variable, 0));
 212       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 213           ((surf_action_t)action)->category,
 214           GENERIC_LMM_ACTION(action).last_value,
 215           GENERIC_LMM_ACTION(action).last_update,
 216           now - GENERIC_LMM_ACTION(action).last_update);
 217     }
 218 #endif
 219     XBT_DEBUG("Updating action(%p): remains is now %lf", action,
 220     GENERIC_ACTION(action).remains);
 221   }
 222   GENERIC_LMM_ACTION(action).last_update = now;
 223   GENERIC_LMM_ACTION(action).last_value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 224 }
 225
 226 static double cpu_share_resources_lazy(double now)
 227 {
 228   surf_action_cpu_Cas01_t action = NULL;
 229   double min = -1;
 230   double value;
 231
 232   XBT_DEBUG
 233       ("Before share resources, the size of modified actions set is %d",
 234        xbt_swag_size(surf_cpu_model->modified_set));
 235
 236   lmm_solve(surf_cpu_model->maxmin_system);
 237
 238   XBT_DEBUG
 239       ("After share resources, The size of modified actions set is %d",
 240        xbt_swag_size(surf_cpu_model->modified_set));
 241
 242   while((action = xbt_swag_extract(surf_cpu_model->modified_set))) {
 243     int max_dur_flag = 0;
 244
 245     if (GENERIC_ACTION(action).state_set !=
 246         surf_cpu_model->states.running_action_set)
 247       continue;
 248
 249     /* bogus priority, skip it */
 250     if (GENERIC_ACTION(action).priority <= 0)
 251       continue;
 252
 253     cpu_update_action_remaining_lazy(action,now);
 254
 255     min = -1;
 256     value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 257     if (value > 0) {
 258       if (GENERIC_ACTION(action).remains > 0) {
 259         value = GENERIC_ACTION(action).remains / value;
 260         min = now + value;
 261       } else {
 262         value = 0.0;
 263         min = now;
 264       }
 265     }
 266
 267     if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 268         && (min == -1
 269             || GENERIC_ACTION(action).start +
 270             GENERIC_ACTION(action).max_duration < min)) {
 271       min = GENERIC_ACTION(action).start +
 272           GENERIC_ACTION(action).max_duration;
 273       max_dur_flag = 1;
 274     }
 275
 276     XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 277         GENERIC_ACTION(action).start, now + value,
 278         GENERIC_ACTION(action).max_duration);
 279
 280     if (min != -1) {
 281       surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 282       surf_action_lmm_heap_insert(surf_cpu_model->action_heap,(surf_action_lmm_t)action, min, max_dur_flag ? MAX_DURATION : NORMAL);
 283       XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
 284                 now);
 285     } else DIE_IMPOSSIBLE;
 286   }
 287
 288   //hereafter must have already the min value for this resource model
 289   if (xbt_heap_size(surf_cpu_model->action_heap) > 0)
 290     min = xbt_heap_maxkey(surf_cpu_model->action_heap) - now;
 291   else
 292     min = -1;
 293
 294   XBT_DEBUG("The minimum with the HEAP %lf", min);
 295
 296   return min;
 297 }
 298
 299 static double cpu_share_resources_full(double now)
 300 {
 301   s_surf_action_cpu_Cas01_t action;
 302   return generic_maxmin_share_resources(surf_cpu_model->states.
 303                                         running_action_set,
 304                                         xbt_swag_offset(action,
 305                                                         generic_lmm_action.
 306                                                         variable),
 307                                         surf_cpu_model->maxmin_system, lmm_solve);
 308 }
 309
 310 static void cpu_update_actions_state_lazy(double now, double delta)
 311 {
 312   surf_action_cpu_Cas01_t action;
 313   while ((xbt_heap_size(surf_cpu_model->action_heap) > 0)
 314          && (double_equals(xbt_heap_maxkey(surf_cpu_model->action_heap), now))) {
 315     action = xbt_heap_pop(surf_cpu_model->action_heap);
 316     XBT_DEBUG("Action %p: finish", action);
 317     GENERIC_ACTION(action).finish = surf_get_clock();
 318 #ifdef HAVE_TRACING
 319     if (TRACE_is_enabled()) {
 320       cpu_Cas01_t cpu =
 321           lmm_constraint_id(lmm_get_cnst_from_var
 322                             (surf_cpu_model->maxmin_system,
 323                              GENERIC_LMM_ACTION(action).variable, 0));
 324       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 325                                       ((surf_action_t)action)->category,
 326                                       lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable),
 327                                       GENERIC_LMM_ACTION(action).last_update,
 328                                       now - GENERIC_LMM_ACTION(action).last_update);
 329     }
 330 #endif
 331     /* set the remains to 0 due to precision problems when updating the remaining amount */
 332     GENERIC_ACTION(action).remains = 0;
 333     cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 334     surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action); //FIXME: strange call since action was already popped
 335   }
 336 #ifdef HAVE_TRACING
 337   if (TRACE_is_enabled()) {
 338     //defining the last timestamp that we can safely dump to trace file
 339     //without losing the event ascending order (considering all CPU's)
 340     double smaller = -1;
 341     xbt_swag_t running_actions = surf_cpu_model->states.running_action_set;
 342     xbt_swag_foreach(action, running_actions) {
 343         if (smaller < 0) {
 344           smaller = GENERIC_LMM_ACTION(action).last_update;
 345           continue;
 346         }
 347         if (GENERIC_LMM_ACTION(action).last_update < smaller) {
 348           smaller = GENERIC_LMM_ACTION(action).last_update;
 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_update_actions_state_full(double now, double delta)
 360 {
 361   surf_action_cpu_Cas01_t action = NULL;
 362   surf_action_cpu_Cas01_t next_action = NULL;
 363   xbt_swag_t running_actions = surf_cpu_model->states.running_action_set;
 364   xbt_swag_foreach_safe(action, next_action, running_actions) {
 365 #ifdef HAVE_TRACING
 366     if (TRACE_is_enabled()) {
 367       cpu_Cas01_t x =
 368           lmm_constraint_id(lmm_get_cnst_from_var
 369                             (surf_cpu_model->maxmin_system,
 370                              GENERIC_LMM_ACTION(action).variable, 0));
 371
 372       TRACE_surf_host_set_utilization(x->generic_resource.name,
 373                                       ((surf_action_t)action)->category,
 374                                       lmm_variable_getvalue(GENERIC_LMM_ACTION(action).
 375                                        variable),
 376                                       now - delta,
 377                                       delta);
 378       TRACE_last_timestamp_to_dump = now - delta;
 379     }
 380 #endif
 381     double_update(&(GENERIC_ACTION(action).remains),
 382                   lmm_variable_getvalue(GENERIC_LMM_ACTION(action).
 383                                         variable) * delta);
 384     if (GENERIC_LMM_ACTION(action).generic_action.max_duration !=
 385         NO_MAX_DURATION)
 386       double_update(&(GENERIC_ACTION(action).max_duration), delta);
 387     if ((GENERIC_ACTION(action).remains <= 0) &&
 388         (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) >
 389          0)) {
 390       GENERIC_ACTION(action).finish = surf_get_clock();
 391       cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 392     } else if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION) &&
 393                (GENERIC_ACTION(action).max_duration <= 0)) {
 394       GENERIC_ACTION(action).finish = surf_get_clock();
 395       cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 396     }
 397   }
 398
 399   return;
 400 }
 401
 402 static void cpu_update_resource_state(void *id,
 403                                       tmgr_trace_event_t event_type,
 404                                       double value, double date)
 405 {
 406   cpu_Cas01_t cpu = id;
 407   lmm_variable_t var = NULL;
 408   lmm_element_t elem = NULL;
 409
 410   if (event_type == cpu->power_event) {
 411     cpu->power_scale = value;
 412     lmm_update_constraint_bound(surf_cpu_model->maxmin_system, cpu->constraint,
 413                                 cpu->core * cpu->power_scale *
 414                                 cpu->power_peak);
 415 #ifdef HAVE_TRACING
 416     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 417                               cpu->core * cpu->power_scale *
 418                               cpu->power_peak);
 419 #endif
 420     while ((var = lmm_get_var_from_cnst
 421             (surf_cpu_model->maxmin_system, cpu->constraint, &elem))) {
 422       surf_action_cpu_Cas01_t action = lmm_variable_id(var);
 423       lmm_update_variable_bound(surf_cpu_model->maxmin_system,
 424                                 GENERIC_LMM_ACTION(action).variable,
 425                                 cpu->power_scale * cpu->power_peak);
 426     }
 427     if (tmgr_trace_event_free(event_type))
 428       cpu->power_event = NULL;
 429   } else if (event_type == cpu->state_event) {
 430     if (value > 0)
 431       cpu->state_current = SURF_RESOURCE_ON;
 432     else {
 433       lmm_constraint_t cnst = cpu->constraint;
 434
 435       cpu->state_current = SURF_RESOURCE_OFF;
 436
 437       while ((var = lmm_get_var_from_cnst(surf_cpu_model->maxmin_system, cnst, &elem))) {
 438         surf_action_t action = lmm_variable_id(var);
 439
 440         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 441             surf_action_state_get(action) == SURF_ACTION_READY ||
 442             surf_action_state_get(action) ==
 443             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 444           action->finish = date;
 445           cpu_action_state_set(action, SURF_ACTION_FAILED);
 446         }
 447       }
 448     }
 449     if (tmgr_trace_event_free(event_type))
 450       cpu->state_event = NULL;
 451   } else {
 452     XBT_CRITICAL("Unknown event ! \n");
 453     xbt_abort();
 454   }
 455
 456   return;
 457 }
 458
 459 static surf_action_t cpu_execute(void *cpu, double size)
 460 {
 461   surf_action_cpu_Cas01_t action = NULL;
 462   cpu_Cas01_t CPU = cpu;
 463
 464   XBT_IN("(%s,%g)", surf_resource_name(CPU), size);
 465   action =
 466       surf_action_new(sizeof(s_surf_action_cpu_Cas01_t), size,
 467                       surf_cpu_model,
 468                       CPU->state_current != SURF_RESOURCE_ON);
 469
 470   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 471                                                    calloc but it seems to help valgrind... */
 472
 473   GENERIC_LMM_ACTION(action).variable =
 474       lmm_variable_new(surf_cpu_model->maxmin_system, action,
 475                        GENERIC_ACTION(action).priority,
 476                        CPU->power_scale * CPU->power_peak, 1);
 477   if (surf_cpu_model->update_mechanism == UM_LAZY) {
 478     GENERIC_LMM_ACTION(action).index_heap = -1;
 479     GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
 480     GENERIC_LMM_ACTION(action).last_value = 0.0;
 481   }
 482   lmm_expand(surf_cpu_model->maxmin_system, CPU->constraint,
 483              GENERIC_LMM_ACTION(action).variable, 1.0);
 484   XBT_OUT();
 485   return (surf_action_t) action;
 486 }
 487
 488 static surf_action_t cpu_action_sleep(void *cpu, double duration)
 489 {
 490   surf_action_cpu_Cas01_t action = NULL;
 491
 492   if (duration > 0)
 493     duration = MAX(duration, MAXMIN_PRECISION);
 494
 495   XBT_IN("(%s,%g)", surf_resource_name(cpu), duration);
 496   action = (surf_action_cpu_Cas01_t) cpu_execute(cpu, 1.0);
 497   // FIXME: sleep variables should not consume 1.0 in lmm_expand
 498   GENERIC_ACTION(action).max_duration = duration;
 499   GENERIC_LMM_ACTION(action).suspended = 2;
 500   if (duration == NO_MAX_DURATION) {
 501     /* Move to the *end* of the corresponding action set. This convention
 502        is used to speed up update_resource_state  */
 503     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 504     ((surf_action_t) action)->state_set =
 505         cpu_running_action_set_that_does_not_need_being_checked;
 506     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 507   }
 508
 509   lmm_update_variable_weight(surf_cpu_model->maxmin_system,
 510                              GENERIC_LMM_ACTION(action).variable, 0.0);
 511   if (surf_cpu_model->update_mechanism == UM_LAZY) {     // remove action from the heap
 512     surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 513     // this is necessary for a variable with weight 0 since such
 514     // variables are ignored in lmm and we need to set its max_duration
 515     // correctly at the next call to share_resources
 516     xbt_swag_insert_at_head(action,surf_cpu_model->modified_set);
 517   }
 518
 519   XBT_OUT();
 520   return (surf_action_t) action;
 521 }
 522
 523 static void cpu_action_suspend(surf_action_t action)
 524 {
 525   XBT_IN("(%p)", action);
 526   if (((surf_action_lmm_t) action)->suspended != 2) {
 527     lmm_update_variable_weight(surf_cpu_model->maxmin_system,
 528                                ((surf_action_lmm_t) action)->variable,
 529                                0.0);
 530     ((surf_action_lmm_t) action)->suspended = 1;
 531     if (surf_cpu_model->update_mechanism == UM_LAZY)
 532       surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 533   }
 534   XBT_OUT();
 535 }
 536
 537 static void cpu_action_resume(surf_action_t action)
 538 {
 539
 540   XBT_IN("(%p)", action);
 541   if (((surf_action_lmm_t) action)->suspended != 2) {
 542     lmm_update_variable_weight(surf_cpu_model->maxmin_system,
 543                                ((surf_action_lmm_t) action)->variable,
 544                                action->priority);
 545     ((surf_action_lmm_t) action)->suspended = 0;
 546     if (surf_cpu_model->update_mechanism == UM_LAZY)
 547       surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 548   }
 549   XBT_OUT();
 550 }
 551
 552 static int cpu_action_is_suspended(surf_action_t action)
 553 {
 554   return (((surf_action_lmm_t) action)->suspended == 1);
 555 }
 556
 557 static void cpu_action_set_max_duration(surf_action_t action,
 558                                         double duration)
 559 {
 560   XBT_IN("(%p,%g)", action, duration);
 561
 562   action->max_duration = duration;
 563   if (surf_cpu_model->update_mechanism == UM_LAZY)
 564     surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 565   XBT_OUT();
 566 }
 567
 568 static void cpu_action_set_priority(surf_action_t action, double priority)
 569 {
 570   XBT_IN("(%p,%g)", action, priority);
 571   action->priority = priority;
 572   lmm_update_variable_weight(surf_cpu_model->maxmin_system,
 573                              ((surf_action_lmm_t) action)->variable,
 574                              priority);
 575
 576   if (surf_cpu_model->update_mechanism == UM_LAZY)
 577     surf_action_lmm_heap_remove(surf_cpu_model->action_heap,(surf_action_lmm_t)action);
 578   XBT_OUT();
 579 }
 580
 581 #ifdef HAVE_TRACING
 582 static void cpu_action_set_category(surf_action_t action,
 583                                     const char *category)
 584 {
 585   XBT_IN("(%p,%s)", action, category);
 586   action->category = xbt_strdup(category);
 587   XBT_OUT();
 588 }
 589 #endif
 590
 591 static double cpu_action_get_remains(surf_action_t action)
 592 {
 593   XBT_IN("(%p)", action);
 594   /* update remains before return it */
 595   if (surf_cpu_model->update_mechanism == UM_LAZY)
 596     cpu_update_action_remaining_lazy((surf_action_cpu_Cas01_t)action,
 597         surf_get_clock());
 598   XBT_OUT();
 599   return action->remains;
 600 }
 601
 602 static e_surf_resource_state_t cpu_get_state(void *cpu)
 603 {
 604   return ((cpu_Cas01_t) cpu)->state_current;
 605 }
 606
 607 static double cpu_get_speed(void *cpu, double load)
 608 {
 609   return load * (((cpu_Cas01_t) cpu)->power_peak);
 610 }
 611
 612 static double cpu_get_available_speed(void *cpu)
 613 {
 614   /* number between 0 and 1 */
 615   return ((cpu_Cas01_t) cpu)->power_scale;
 616 }
 617
 618 static void cpu_finalize(void)
 619 {
 620   lmm_system_free(surf_cpu_model->maxmin_system);
 621   surf_cpu_model->maxmin_system = NULL;
 622
 623   if (surf_cpu_model->action_heap)
 624     xbt_heap_free(surf_cpu_model->action_heap);
 625   xbt_swag_free(surf_cpu_model->modified_set);
 626
 627   surf_model_exit(surf_cpu_model);
 628   surf_cpu_model = NULL;
 629
 630   xbt_swag_free(cpu_running_action_set_that_does_not_need_being_checked);
 631   cpu_running_action_set_that_does_not_need_being_checked = NULL;
 632 }
 633
 634 static void surf_cpu_model_init_internal()
 635 {
 636   s_surf_action_t action;
 637   s_surf_action_cpu_Cas01_t comp;
 638
 639   char *optim = xbt_cfg_get_string(_surf_cfg_set, "cpu/optim");
 640   int select =
 641       xbt_cfg_get_int(_surf_cfg_set, "cpu/maxmin_selective_update");
 642
 643   surf_cpu_model = surf_model_init();
 644
 645   if (!strcmp(optim, "Full")) {
 646     surf_cpu_model->update_mechanism = UM_FULL;
 647     surf_cpu_model->selective_update = select;
 648   } else if (!strcmp(optim, "Lazy")) {
 649     surf_cpu_model->update_mechanism = UM_LAZY;
 650     surf_cpu_model->selective_update = 1;
 651     xbt_assert((select == 1)
 652                ||
 653                (xbt_cfg_is_default_value
 654                 (_surf_cfg_set, "cpu/maxmin_selective_update")),
 655                "Disabling selective update while using the lazy update mechanism is dumb!");
 656   } else {
 657     xbt_die("Unsupported optimization (%s) for this model", optim);
 658   }
 659
 660   cpu_running_action_set_that_does_not_need_being_checked =
 661       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 662
 663   surf_cpu_model->name = "cpu";
 664
 665   surf_cpu_model->action_unref = cpu_action_unref;
 666   surf_cpu_model->action_cancel = cpu_action_cancel;
 667   surf_cpu_model->action_state_set = cpu_action_state_set;
 668
 669   surf_cpu_model->model_private->resource_used = cpu_resource_used;
 670
 671   if (surf_cpu_model->update_mechanism == UM_LAZY) {
 672     surf_cpu_model->model_private->share_resources =
 673         cpu_share_resources_lazy;
 674     surf_cpu_model->model_private->update_actions_state =
 675         cpu_update_actions_state_lazy;
 676   } else if (surf_cpu_model->update_mechanism == UM_FULL) {
 677     surf_cpu_model->model_private->share_resources =
 678         cpu_share_resources_full;
 679     surf_cpu_model->model_private->update_actions_state =
 680         cpu_update_actions_state_full;
 681   } else
 682     xbt_die("Invalid cpu update mechanism!");
 683
 684   surf_cpu_model->model_private->update_resource_state =
 685       cpu_update_resource_state;
 686   surf_cpu_model->model_private->finalize = cpu_finalize;
 687
 688   surf_cpu_model->suspend = cpu_action_suspend;
 689   surf_cpu_model->resume = cpu_action_resume;
 690   surf_cpu_model->is_suspended = cpu_action_is_suspended;
 691   surf_cpu_model->set_max_duration = cpu_action_set_max_duration;
 692   surf_cpu_model->set_priority = cpu_action_set_priority;
 693 #ifdef HAVE_TRACING
 694   surf_cpu_model->set_category = cpu_action_set_category;
 695 #endif
 696   surf_cpu_model->get_remains = cpu_action_get_remains;
 697
 698   surf_cpu_model->extension.cpu.execute = cpu_execute;
 699   surf_cpu_model->extension.cpu.sleep = cpu_action_sleep;
 700
 701   surf_cpu_model->extension.cpu.get_state = cpu_get_state;
 702   surf_cpu_model->extension.cpu.get_speed = cpu_get_speed;
 703   surf_cpu_model->extension.cpu.get_available_speed =
 704       cpu_get_available_speed;
 705   surf_cpu_model->extension.cpu.create_resource = cpu_create_resource;
 706   surf_cpu_model->extension.cpu.add_traces = cpu_add_traces_cpu;
 707
 708   if (!surf_cpu_model->maxmin_system) {
 709     surf_cpu_model->maxmin_system = lmm_system_new(surf_cpu_model->selective_update);
 710   }
 711   if (surf_cpu_model->update_mechanism == UM_LAZY) {
 712     surf_cpu_model->action_heap = xbt_heap_new(8, NULL);
 713     xbt_heap_set_update_callback(surf_cpu_model->action_heap,
 714         surf_action_lmm_update_index_heap);
 715     surf_cpu_model->modified_set =
 716         xbt_swag_new(xbt_swag_offset(comp, generic_lmm_action.action_list_hookup));
 717     surf_cpu_model->maxmin_system->keep_track = surf_cpu_model->modified_set;
 718   }
 719 }
 720
 721 /*********************************************************************/
 722 /* Basic sharing model for CPU: that is where all this started... ;) */
 723 /*********************************************************************/
 724 /* @InProceedings{casanova01simgrid, */
 725 /*   author =       "H. Casanova", */
 726 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 727 /*                  and the Grid (CCGrid'01)", */
 728 /*   publisher =    "IEEE Computer Society", */
 729 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 730 /*                  Scheduling", */
 731 /*   year =         "2001", */
 732 /*   month =        may, */
 733 /*   note =         "Available at */
 734 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 735 /* } */
 736
 737 void surf_cpu_model_init_Cas01()
 738 {
 739   char *optim = xbt_cfg_get_string(_surf_cfg_set, "cpu/optim");
 740
 741   if (surf_cpu_model)
 742     return;
 743
 744   if (!strcmp(optim, "TI")) {
 745     surf_cpu_model_init_ti();
 746     return;
 747   }
 748
 749   surf_cpu_model_init_internal();
 750   cpu_define_callbacks();
 751   xbt_dynar_push(model_list, &surf_cpu_model);
 752 }