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                                  int core,
  53                                  e_surf_resource_state_t state_initial,
  54                                  tmgr_trace_t state_trace,
  55                                  xbt_dict_t cpu_properties)
  56 {
  57   cpu_Cas01_im_t cpu = NULL;
  58   s_surf_action_cpu_Cas01_im_t action;
  59   cpu = xbt_new0(s_cpu_Cas01_im_t, 1);
  60
  61   xbt_assert0(core==1,"Multi-core not handled with this model yet");
  62 #ifdef HAVE_TRACING
  63   TRACE_surf_host_declaration(name, power_scale * power_peak);
  64 #endif
  65
  66   xbt_assert1(!surf_model_resource_by_name(surf_cpu_model, name),
  67               "Host '%s' declared several times in the platform file",
  68               name);
  69   cpu->generic_resource.model = surf_cpu_model;
  70   cpu->generic_resource.name = name;
  71   cpu->generic_resource.properties = cpu_properties;
  72   cpu->power_peak = power_peak;
  73   xbt_assert0(cpu->power_peak > 0, "Power has to be >0");
  74   cpu->power_scale = power_scale;
  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->power_scale * cpu->power_peak);
  87
  88   xbt_dict_set(surf_model_resource_set(surf_cpu_model), name, cpu,
  89                surf_resource_free);
  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(void)
  97 {
  98   double power_peak = 0.0;
  99   double power_scale = 0.0;
 100   int core = 0;
 101   tmgr_trace_t power_trace = NULL;
 102   e_surf_resource_state_t state_initial = SURF_RESOURCE_OFF;
 103   tmgr_trace_t state_trace = NULL;
 104
 105   power_peak = get_cpu_power(A_surfxml_host_power);
 106   surf_parse_get_double(&power_scale, A_surfxml_host_availability);
 107   power_trace = tmgr_trace_new(A_surfxml_host_availability_file);
 108   surf_parse_get_int(&core, A_surfxml_host_core);
 109
 110   xbt_assert0((A_surfxml_host_state == A_surfxml_host_state_ON) ||
 111               (A_surfxml_host_state == A_surfxml_host_state_OFF),
 112               "Invalid state");
 113   if (A_surfxml_host_state == A_surfxml_host_state_ON)
 114     state_initial = SURF_RESOURCE_ON;
 115   if (A_surfxml_host_state == A_surfxml_host_state_OFF)
 116     state_initial = SURF_RESOURCE_OFF;
 117   state_trace = tmgr_trace_new(A_surfxml_host_state_file);
 118
 119   current_property_set = xbt_dict_new();
 120   cpu_im_new(xbt_strdup(A_surfxml_host_id), power_peak, power_scale,
 121              power_trace, core, state_initial, state_trace,
 122              current_property_set);
 123
 124 }
 125
 126 static void cpu_im_add_traces_cpu(void)
 127 {
 128   xbt_dict_cursor_t cursor = NULL;
 129   char *trace_name, *elm;
 130   static int called = 0;
 131   if (called)
 132     return;
 133   called = 1;
 134
 135   /* connect all traces relative to hosts */
 136   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 137     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 138     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 139
 140     xbt_assert1(host, "Host %s undefined", elm);
 141     xbt_assert1(trace, "Trace %s undefined", trace_name);
 142
 143     host->state_event =
 144         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 145   }
 146
 147   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 148     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 149     cpu_Cas01_im_t host = surf_model_resource_by_name(surf_cpu_model, elm);
 150
 151     xbt_assert1(host, "Host %s undefined", elm);
 152     xbt_assert1(trace, "Trace %s undefined", trace_name);
 153
 154     host->power_event =
 155         tmgr_history_add_trace(history, trace, 0.0, 0, host);
 156   }
 157 }
 158
 159 static void cpu_im_define_callbacks(const char *file)
 160 {
 161
 162   surf_parse_reset_parser();
 163   surfxml_add_callback(STag_surfxml_host_cb_list, parse_cpu_im_init);
 164   surfxml_add_callback(ETag_surfxml_platform_cb_list,
 165                        &cpu_im_add_traces_cpu);
 166 }
 167
 168 static int cpu_im_resource_used(void *resource_id)
 169 {
 170   return lmm_constraint_used(cpu_im_maxmin_system,
 171                              ((cpu_Cas01_im_t) resource_id)->constraint);
 172 }
 173
 174 static int cpu_im_action_unref(surf_action_t action)
 175 {
 176   action->refcount--;
 177   if (!action->refcount) {
 178     xbt_swag_remove(action, action->state_set);
 179     if (((surf_action_lmm_t) action)->variable)
 180       lmm_variable_free(cpu_im_maxmin_system,
 181                         ((surf_action_lmm_t) action)->variable);
 182     /* remove from heap */
 183     xbt_heap_remove(cpu_im_action_heap,
 184                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 185     xbt_swag_remove(action,
 186                     ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 187     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 188 #ifdef HAVE_TRACING
 189     if (action->category)
 190       xbt_free(action->category);
 191 #endif
 192     free(action);
 193     return 1;
 194   }
 195   return 0;
 196 }
 197
 198 static void cpu_im_action_cancel(surf_action_t action)
 199 {
 200   surf_action_state_set(action, SURF_ACTION_FAILED);
 201   xbt_heap_remove(cpu_im_action_heap,
 202                   ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 203   xbt_swag_remove(action,
 204                   ((cpu_Cas01_im_t) ACTION_GET_CPU(action))->action_set);
 205   return;
 206 }
 207
 208 static void cpu_im_cpu_action_state_set(surf_action_t action,
 209                                         e_surf_action_state_t state)
 210 {
 211 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 212 /*     if(((surf_action_lmm_t)action)->variable) { */
 213 /*       lmm_variable_disable(cpu_im_maxmin_system, ((surf_action_lmm_t)action)->variable); */
 214 /*       ((surf_action_lmm_t)action)->variable = NULL; */
 215 /*     } */
 216
 217   surf_action_state_set(action, state);
 218   return;
 219 }
 220
 221 static void cpu_im_update_remains(cpu_Cas01_im_t cpu, double now)
 222 {
 223   surf_action_cpu_Cas01_im_t action;
 224
 225   if (cpu->last_update >= now)
 226     return;
 227   xbt_swag_foreach(action, cpu->action_set) {
 228     if (GENERIC_ACTION(action).state_set !=
 229         surf_cpu_model->states.running_action_set)
 230       continue;
 231
 232     /* bogus priority, skip it */
 233     if (GENERIC_ACTION(action).priority <= 0)
 234       continue;
 235
 236     if (GENERIC_ACTION(action).remains > 0) {
 237       double_update(&(GENERIC_ACTION(action).remains),
 238                     lmm_variable_getvalue(GENERIC_LMM_ACTION
 239                                           (action).variable) * (now -
 240                                                                 cpu->last_update));
 241 #ifdef HAVE_TRACING
 242       TRACE_surf_host_set_utilization(cpu->generic_resource.name,
 243                                       action->
 244                                       generic_lmm_action.generic_action.
 245                                       data, (surf_action_t) action,
 246                                       lmm_variable_getvalue
 247                                       (GENERIC_LMM_ACTION
 248                                        (action).variable),
 249                                       cpu->last_update,
 250                                       now - cpu->last_update);
 251 #endif
 252       DEBUG2("Update action(%p) remains %lf", action,
 253              GENERIC_ACTION(action).remains);
 254     }
 255   }
 256   cpu->last_update = now;
 257 }
 258
 259 static double cpu_im_share_resources(double now)
 260 {
 261   surf_action_cpu_Cas01_im_t action;
 262   double min;
 263   double value;
 264   cpu_Cas01_im_t cpu, cpu_next;
 265
 266   xbt_swag_foreach(cpu, cpu_im_modified_cpu)
 267       cpu_im_update_remains(cpu, now);
 268
 269   lmm_solve(cpu_im_maxmin_system);
 270
 271   xbt_swag_foreach_safe(cpu, cpu_next, cpu_im_modified_cpu) {
 272     xbt_swag_foreach(action, cpu->action_set) {
 273       if (GENERIC_ACTION(action).state_set !=
 274           surf_cpu_model->states.running_action_set)
 275         continue;
 276
 277       /* bogus priority, skip it */
 278       if (GENERIC_ACTION(action).priority <= 0)
 279         continue;
 280
 281       min = -1;
 282       value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
 283       if (value > 0) {
 284         if (GENERIC_ACTION(action).remains > 0) {
 285           value = GENERIC_ACTION(action).remains / value;
 286           min = now + value;
 287         } else {
 288           value = 0.0;
 289           min = now;
 290         }
 291       }
 292
 293       if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 294           && (min == -1
 295               || GENERIC_ACTION(action).start +
 296               GENERIC_ACTION(action).max_duration < min))
 297         min =
 298             GENERIC_ACTION(action).start +
 299             GENERIC_ACTION(action).max_duration;
 300
 301       DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 302              GENERIC_ACTION(action).start, now + value,
 303              GENERIC_ACTION(action).max_duration);
 304
 305       if (action->index_heap >= 0) {
 306         surf_action_cpu_Cas01_im_t heap_act =
 307             xbt_heap_remove(cpu_im_action_heap, action->index_heap);
 308         if (heap_act != action)
 309           DIE_IMPOSSIBLE;
 310       }
 311       if (min != -1) {
 312         xbt_heap_push(cpu_im_action_heap, action, min);
 313         DEBUG2("Insert at heap action(%p) min %lf", action, min);
 314       }
 315     }
 316     xbt_swag_remove(cpu, cpu_im_modified_cpu);
 317   }
 318   return xbt_heap_size(cpu_im_action_heap) >
 319       0 ? xbt_heap_maxkey(cpu_im_action_heap) - now : -1;
 320 }
 321
 322 static void cpu_im_update_actions_state(double now, double delta)
 323 {
 324   surf_action_cpu_Cas01_im_t action;
 325
 326   while ((xbt_heap_size(cpu_im_action_heap) > 0)
 327          && (double_equals(xbt_heap_maxkey(cpu_im_action_heap), now))) {
 328     action = xbt_heap_pop(cpu_im_action_heap);
 329     DEBUG1("Action %p: finish", action);
 330     GENERIC_ACTION(action).finish = surf_get_clock();
 331     /* set the remains to 0 due to precision problems when updating the remaining amount */
 332 #ifdef HAVE_TRACING
 333     TRACE_surf_host_set_utilization(((cpu_Cas01_im_t)
 334                                      (action->cpu))->generic_resource.name,
 335                                     action->
 336                                     generic_lmm_action.generic_action.data,
 337                                     (surf_action_t) action,
 338                                     lmm_variable_getvalue
 339                                     (GENERIC_LMM_ACTION(action).variable),
 340                                     ((cpu_Cas01_im_t)
 341                                      (action->cpu))->last_update,
 342                                     now -
 343                                     ((cpu_Cas01_im_t)
 344                                      (action->cpu))->last_update);
 345 #endif
 346     GENERIC_ACTION(action).remains = 0;
 347     cpu_im_cpu_action_state_set((surf_action_t) action, SURF_ACTION_DONE);
 348     cpu_im_update_remains(action->cpu, surf_get_clock());
 349   }
 350   return;
 351 }
 352
 353 static void cpu_im_update_resource_state(void *id,
 354                                          tmgr_trace_event_t event_type,
 355                                          double value, double date)
 356 {
 357   cpu_Cas01_im_t cpu = id;
 358   if (event_type == cpu->power_event) {
 359     cpu->power_scale = value;
 360     lmm_update_constraint_bound(cpu_im_maxmin_system, cpu->constraint,
 361                                 cpu->power_scale * cpu->power_peak);
 362 #ifdef HAVE_TRACING
 363     TRACE_surf_host_set_power(date, cpu->generic_resource.name,
 364                               cpu->power_scale * cpu->power_peak);
 365 #endif
 366     xbt_swag_insert(cpu, cpu_im_modified_cpu);
 367     if (tmgr_trace_event_free(event_type))
 368       cpu->power_event = NULL;
 369   } else if (event_type == cpu->state_event) {
 370     if (value > 0)
 371       cpu->state_current = SURF_RESOURCE_ON;
 372     else {
 373       lmm_constraint_t cnst = cpu->constraint;
 374       lmm_variable_t var = NULL;
 375       lmm_element_t elem = NULL;
 376
 377       cpu->state_current = SURF_RESOURCE_OFF;
 378
 379       while ((var =
 380               lmm_get_var_from_cnst(cpu_im_maxmin_system, cnst, &elem))) {
 381         surf_action_t action = lmm_variable_id(var);
 382
 383         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 384             surf_action_state_get(action) == SURF_ACTION_READY ||
 385             surf_action_state_get(action) ==
 386             SURF_ACTION_NOT_IN_THE_SYSTEM) {
 387           action->finish = date;
 388           cpu_im_cpu_action_state_set(action, SURF_ACTION_FAILED);
 389         }
 390       }
 391     }
 392     if (tmgr_trace_event_free(event_type))
 393       cpu->state_event = NULL;
 394   } else {
 395     CRITICAL0("Unknown event ! \n");
 396     xbt_abort();
 397   }
 398
 399   return;
 400 }
 401
 402 static surf_action_t cpu_im_execute(void *cpu, double size)
 403 {
 404   surf_action_cpu_Cas01_im_t action = NULL;
 405   cpu_Cas01_im_t CPU = cpu;
 406
 407   XBT_IN2("(%s,%g)", surf_resource_name(CPU), size);
 408   action =
 409       surf_action_new(sizeof(s_surf_action_cpu_Cas01_im_t), size,
 410                       surf_cpu_model,
 411                       CPU->state_current != SURF_RESOURCE_ON);
 412
 413   GENERIC_LMM_ACTION(action).suspended = 0;     /* Should be useless because of the
 414                                                    calloc but it seems to help valgrind... */
 415
 416   GENERIC_LMM_ACTION(action).variable =
 417       lmm_variable_new(cpu_im_maxmin_system, action,
 418                        GENERIC_ACTION(action).priority, -1.0, 1);
 419   action->index_heap = -1;
 420   action->cpu = CPU;
 421   xbt_swag_insert(CPU, cpu_im_modified_cpu);
 422   xbt_swag_insert(action, CPU->action_set);
 423   lmm_expand(cpu_im_maxmin_system, CPU->constraint,
 424              GENERIC_LMM_ACTION(action).variable, 1.0);
 425   XBT_OUT;
 426   return (surf_action_t) action;
 427 }
 428
 429 static surf_action_t cpu_im_action_sleep(void *cpu, double duration)
 430 {
 431   surf_action_cpu_Cas01_im_t action = NULL;
 432
 433   if (duration > 0)
 434     duration = MAX(duration, MAXMIN_PRECISION);
 435
 436   XBT_IN2("(%s,%g)", surf_resource_name(cpu), duration);
 437   action = (surf_action_cpu_Cas01_im_t) cpu_im_execute(cpu, 1.0);
 438   GENERIC_ACTION(action).max_duration = duration;
 439   GENERIC_LMM_ACTION(action).suspended = 2;
 440   if (duration == NO_MAX_DURATION) {
 441     /* Move to the *end* of the corresponding action set. This convention
 442        is used to speed up update_resource_state  */
 443     xbt_swag_remove(action, ((surf_action_t) action)->state_set);
 444     ((surf_action_t) action)->state_set =
 445         cpu_im_running_action_set_that_does_not_need_being_checked;
 446     xbt_swag_insert(action, ((surf_action_t) action)->state_set);
 447   }
 448
 449   lmm_update_variable_weight(cpu_im_maxmin_system,
 450                              GENERIC_LMM_ACTION(action).variable, 0.0);
 451   xbt_swag_insert(cpu, cpu_im_modified_cpu);
 452   XBT_OUT;
 453   return (surf_action_t) action;
 454 }
 455
 456 static void cpu_im_action_suspend(surf_action_t action)
 457 {
 458   XBT_IN1("(%p)", action);
 459   if (((surf_action_lmm_t) action)->suspended != 2) {
 460     lmm_update_variable_weight(cpu_im_maxmin_system,
 461                                ((surf_action_lmm_t) action)->variable,
 462                                0.0);
 463     ((surf_action_lmm_t) action)->suspended = 1;
 464     xbt_heap_remove(cpu_im_action_heap,
 465                     ((surf_action_cpu_Cas01_im_t) action)->index_heap);
 466     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 467   }
 468   XBT_OUT;
 469 }
 470
 471 static void cpu_im_action_resume(surf_action_t action)
 472 {
 473
 474   XBT_IN1("(%p)", action);
 475   if (((surf_action_lmm_t) action)->suspended != 2) {
 476     lmm_update_variable_weight(cpu_im_maxmin_system,
 477                                ((surf_action_lmm_t) action)->variable,
 478                                action->priority);
 479     ((surf_action_lmm_t) action)->suspended = 0;
 480     xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 481   }
 482   XBT_OUT;
 483 }
 484
 485 static int cpu_im_action_is_suspended(surf_action_t action)
 486 {
 487   return (((surf_action_lmm_t) action)->suspended == 1);
 488 }
 489
 490 static void cpu_im_action_set_max_duration(surf_action_t action,
 491                                            double duration)
 492 {
 493   XBT_IN2("(%p,%g)", action, duration);
 494
 495   action->max_duration = duration;
 496   /* insert cpu in modified_cpu set to notice the max duration change */
 497   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 498   XBT_OUT;
 499 }
 500
 501 static void cpu_im_action_set_priority(surf_action_t action,
 502                                        double priority)
 503 {
 504   XBT_IN2("(%p,%g)", action, priority);
 505   action->priority = priority;
 506   lmm_update_variable_weight(cpu_im_maxmin_system,
 507                              ((surf_action_lmm_t) action)->variable,
 508                              priority);
 509
 510   xbt_swag_insert(ACTION_GET_CPU(action), cpu_im_modified_cpu);
 511   XBT_OUT;
 512 }
 513
 514 static double cpu_im_action_get_remains(surf_action_t action)
 515 {
 516   XBT_IN1("(%p)", action);
 517   /* update remains before return it */
 518   cpu_im_update_remains(ACTION_GET_CPU(action), surf_get_clock());
 519   return action->remains;
 520   XBT_OUT;
 521 }
 522
 523 static e_surf_resource_state_t cpu_im_get_state(void *cpu)
 524 {
 525   return ((cpu_Cas01_im_t) cpu)->state_current;
 526 }
 527
 528 static double cpu_im_get_speed(void *cpu, double load)
 529 {
 530   return load * (((cpu_Cas01_im_t) cpu)->power_peak);
 531 }
 532
 533 static double cpu_im_get_available_speed(void *cpu)
 534 {
 535   /* number between 0 and 1 */
 536   return ((cpu_Cas01_im_t) cpu)->power_scale;
 537 }
 538
 539 static void cpu_im_action_update_index_heap(void *action, int i)
 540 {
 541   ((surf_action_cpu_Cas01_im_t) action)->index_heap = i;
 542 }
 543
 544 static void cpu_im_create_resource(char *name, double power_peak,
 545                                    double power_scale,
 546                                    tmgr_trace_t power_trace,
 547                                    int core,
 548                                    e_surf_resource_state_t state_initial,
 549                                    tmgr_trace_t state_trace,
 550                                    xbt_dict_t cpu_properties)
 551 {
 552         xbt_assert0(core==1,"Multi-core not handled with this model yet");
 553   cpu_im_new(name, power_peak, power_scale, power_trace, core,
 554              state_initial, state_trace, cpu_properties);
 555 }
 556
 557 static void cpu_im_finalize(void)
 558 {
 559   void *cpu;
 560   xbt_dict_cursor_t cursor;
 561   char *key;
 562   xbt_dict_foreach(surf_model_resource_set(surf_cpu_model), cursor, key,
 563                    cpu) {
 564     cpu_Cas01_im_t CPU = cpu;
 565     xbt_swag_free(CPU->action_set);
 566   }
 567
 568   lmm_system_free(cpu_im_maxmin_system);
 569   cpu_im_maxmin_system = NULL;
 570
 571   surf_model_exit(surf_cpu_model);
 572   surf_cpu_model = NULL;
 573
 574   xbt_swag_free
 575       (cpu_im_running_action_set_that_does_not_need_being_checked);
 576   cpu_im_running_action_set_that_does_not_need_being_checked = NULL;
 577   xbt_heap_free(cpu_im_action_heap);
 578   xbt_swag_free(cpu_im_modified_cpu);
 579 }
 580
 581 static void surf_cpu_im_model_init_internal(void)
 582 {
 583   s_surf_action_t action;
 584   s_cpu_Cas01_im_t cpu;
 585
 586   surf_cpu_model = surf_model_init();
 587
 588   cpu_im_running_action_set_that_does_not_need_being_checked =
 589       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 590
 591   surf_cpu_model->name = "CPU_IM";
 592
 593   surf_cpu_model->action_unref = cpu_im_action_unref;
 594   surf_cpu_model->action_cancel = cpu_im_action_cancel;
 595   surf_cpu_model->action_state_set = cpu_im_cpu_action_state_set;
 596
 597   surf_cpu_model->model_private->resource_used = cpu_im_resource_used;
 598   surf_cpu_model->model_private->share_resources = cpu_im_share_resources;
 599   surf_cpu_model->model_private->update_actions_state =
 600       cpu_im_update_actions_state;
 601   surf_cpu_model->model_private->update_resource_state =
 602       cpu_im_update_resource_state;
 603   surf_cpu_model->model_private->finalize = cpu_im_finalize;
 604
 605   surf_cpu_model->suspend = cpu_im_action_suspend;
 606   surf_cpu_model->resume = cpu_im_action_resume;
 607   surf_cpu_model->is_suspended = cpu_im_action_is_suspended;
 608   surf_cpu_model->set_max_duration = cpu_im_action_set_max_duration;
 609   surf_cpu_model->set_priority = cpu_im_action_set_priority;
 610   surf_cpu_model->get_remains = cpu_im_action_get_remains;
 611
 612   surf_cpu_model->extension.cpu.execute = cpu_im_execute;
 613   surf_cpu_model->extension.cpu.sleep = cpu_im_action_sleep;
 614
 615   surf_cpu_model->extension.cpu.get_state = cpu_im_get_state;
 616   surf_cpu_model->extension.cpu.get_speed = cpu_im_get_speed;
 617   surf_cpu_model->extension.cpu.get_available_speed =
 618       cpu_im_get_available_speed;
 619   surf_cpu_model->extension.cpu.create_resource = cpu_im_create_resource;
 620   surf_cpu_model->extension.cpu.add_traces = cpu_im_add_traces_cpu;
 621
 622   if (!cpu_im_maxmin_system) {
 623     sg_maxmin_selective_update = 1;
 624     cpu_im_maxmin_system = lmm_system_new();
 625   }
 626   cpu_im_action_heap = xbt_heap_new(8, NULL);
 627   xbt_heap_set_update_callback(cpu_im_action_heap,
 628                                cpu_im_action_update_index_heap);
 629   cpu_im_modified_cpu =
 630       xbt_swag_new(xbt_swag_offset(cpu, modified_cpu_hookup));
 631 }
 632
 633 /*********************************************************************/
 634 /* Basic sharing model for CPU: that is where all this started... ;) */
 635 /*********************************************************************/
 636 /* @InProceedings{casanova01simgrid, */
 637 /*   author =       "H. Casanova", */
 638 /*   booktitle =    "Proceedings of the IEEE Symposium on Cluster Computing */
 639 /*                  and the Grid (CCGrid'01)", */
 640 /*   publisher =    "IEEE Computer Society", */
 641 /*   title =        "Simgrid: {A} Toolkit for the Simulation of Application */
 642 /*                  Scheduling", */
 643 /*   year =         "2001", */
 644 /*   month =        may, */
 645 /*   note =         "Available at */
 646 /*                  \url{http://grail.sdsc.edu/papers/simgrid_ccgrid01.ps.gz}." */
 647 /* } */
 648 void surf_cpu_model_init_Cas01_im(const char *filename)
 649 {
 650   if (surf_cpu_model)
 651     return;
 652   surf_cpu_im_model_init_internal();
 653   cpu_im_define_callbacks(filename);
 654   xbt_dynar_push(model_list, &surf_cpu_model);
 655 }