src/surf/host_ptask_L07.cpp

   1 /* Copyright (c) 2007-2010, 2013-2015. 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 <cstdlib>
   8
   9 #include <algorithm>
  10
  11 #include "host_ptask_L07.hpp"
  12
  13 #include "cpu_interface.hpp"
  14 #include "surf_routing.hpp"
  15 #include "xbt/lib.h"
  16 #include "src/surf/platform.hpp"
  17
  18 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_host);
  19 XBT_LOG_EXTERNAL_CATEGORY(xbt_cfg);
  20
  21 /**************************************/
  22 /*** Resource Creation & Destruction **/
  23 /**************************************/
  24
  25 static void ptask_netlink_parse_init(sg_platf_link_cbarg_t link)
  26 {
  27   netlink_parse_init(link);
  28   current_property_set = NULL;
  29 }
  30
  31 void surf_host_model_init_ptask_L07(void)
  32 {
  33   XBT_CINFO(xbt_cfg,"Switching to the L07 model to handle parallel tasks.");
  34   xbt_assert(!surf_cpu_model_pm, "CPU model type already defined");
  35   xbt_assert(!surf_network_model, "network model type already defined");
  36
  37   // Define the callbacks to parse the XML
  38   simgrid::surf::on_link.connect(ptask_netlink_parse_init);
  39   simgrid::surf::on_postparse.connect([](){
  40       surf_host_model->addTraces();
  41   });
  42
  43   surf_host_model = new simgrid::surf::HostL07Model();
  44   xbt_dynar_push(all_existing_models, &surf_host_model);
  45 }
  46
  47
  48 namespace simgrid {
  49 namespace surf {
  50
  51 HostL07Model::HostL07Model() : HostModel() {
  52   p_maxminSystem = lmm_system_new(1);
  53   surf_network_model = new NetworkL07Model(this,p_maxminSystem);
  54   surf_cpu_model_pm = new CpuL07Model(this,p_maxminSystem);
  55
  56   routing_model_create(surf_network_model->createLink("__loopback__",
  57                                                           498000000, NULL,
  58                                                           0.000015, NULL,
  59                                                           1/*ON*/, NULL,
  60                                                           SURF_LINK_FATPIPE, NULL));
  61 }
  62
  63 HostL07Model::~HostL07Model() {
  64   delete surf_cpu_model_pm;
  65   delete surf_network_model;
  66 }
  67
  68 CpuL07Model::CpuL07Model(HostL07Model *hmodel,lmm_system_t sys)
  69         : CpuModel()
  70         , p_hostModel(hmodel)
  71         {
  72           p_maxminSystem = sys;
  73         }
  74 CpuL07Model::~CpuL07Model() {
  75         surf_cpu_model_pm = NULL;
  76         lmm_system_free(p_maxminSystem);
  77         p_maxminSystem = NULL;
  78 }
  79 NetworkL07Model::NetworkL07Model(HostL07Model *hmodel, lmm_system_t sys)
  80         : NetworkModel()
  81         , p_hostModel(hmodel)
  82         {
  83           p_maxminSystem = sys;
  84         }
  85 NetworkL07Model::~NetworkL07Model()
  86 {
  87         surf_network_model = NULL;
  88         p_maxminSystem = NULL; // Avoid multi-free
  89 }
  90
  91
  92 double HostL07Model::shareResources(double /*now*/)
  93 {
  94   L07Action *action;
  95
  96   ActionList *running_actions = getRunningActionSet();
  97   double min = this->shareResourcesMaxMin(running_actions,
  98                                               p_maxminSystem,
  99                                               bottleneck_solve);
 100
 101   for(ActionList::iterator it(running_actions->begin()), itend(running_actions->end())
 102          ; it != itend ; ++it) {
 103         action = static_cast<L07Action*>(&*it);
 104     if (action->m_latency > 0) {
 105       if (min < 0) {
 106         min = action->m_latency;
 107         XBT_DEBUG("Updating min (value) with %p (start %f): %f", action,
 108                action->getStartTime(), min);
 109       } else if (action->m_latency < min) {
 110         min = action->m_latency;
 111         XBT_DEBUG("Updating min (latency) with %p (start %f): %f", action,
 112                action->getStartTime(), min);
 113       }
 114     }
 115   }
 116
 117   XBT_DEBUG("min value : %f", min);
 118
 119   return min;
 120 }
 121
 122 void HostL07Model::updateActionsState(double /*now*/, double delta) {
 123
 124   L07Action *action;
 125   ActionList *actionSet = getRunningActionSet();
 126
 127   for(ActionList::iterator it = actionSet->begin(), itNext = it
 128          ; it != actionSet->end()
 129          ; it =  itNext) {
 130         ++itNext;
 131     action = static_cast<L07Action*>(&*it);
 132     if (action->m_latency > 0) {
 133       if (action->m_latency > delta) {
 134         double_update(&(action->m_latency), delta, sg_surf_precision);
 135       } else {
 136         action->m_latency = 0.0;
 137       }
 138       if ((action->m_latency == 0.0) && (action->isSuspended() == 0)) {
 139         action->updateBound();
 140         lmm_update_variable_weight(p_maxminSystem, action->getVariable(), 1.0);
 141       }
 142     }
 143     XBT_DEBUG("Action (%p) : remains (%g) updated by %g.",
 144            action, action->getRemains(), lmm_variable_getvalue(action->getVariable()) * delta);
 145     action->updateRemains(lmm_variable_getvalue(action->getVariable()) * delta);
 146
 147     if (action->getMaxDuration() != NO_MAX_DURATION)
 148       action->updateMaxDuration(delta);
 149
 150     XBT_DEBUG("Action (%p) : remains (%g).", action, action->getRemains());
 151
 152     /* In the next if cascade, the action can be finished either because:
 153      *  - The amount of remaining work reached 0
 154      *  - The max duration was reached
 155      * If it's not done, it may have failed.
 156      */
 157
 158     if ((action->getRemains() <= 0) &&
 159         (lmm_get_variable_weight(action->getVariable()) > 0)) {
 160       action->finish();
 161       action->setState(SURF_ACTION_DONE);
 162     } else if ((action->getMaxDuration() != NO_MAX_DURATION) &&
 163                (action->getMaxDuration() <= 0)) {
 164       action->finish();
 165       action->setState(SURF_ACTION_DONE);
 166     } else {
 167       /* Need to check that none of the model has failed */
 168       lmm_constraint_t cnst = NULL;
 169       int i = 0;
 170
 171       while ((cnst = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i++))) {
 172         void *constraint_id = lmm_constraint_id(cnst);
 173
 174         if (static_cast<Host*>(constraint_id)->isOff()) {
 175           XBT_DEBUG("Action (%p) Failed!!", action);
 176           action->finish();
 177           action->setState(SURF_ACTION_FAILED);
 178           break;
 179         }
 180       }
 181     }
 182   }
 183   return;
 184 }
 185
 186 Action *HostL07Model::executeParallelTask(int host_nb, sg_host_t *host_list,
 187                   double *flops_amount, double *bytes_amount,
 188                   double rate) {
 189         return new L07Action(this, host_nb, host_list, flops_amount, bytes_amount, rate);
 190 }
 191
 192
 193 L07Action::L07Action(Model *model, int host_nb,
 194                 sg_host_t*host_list,
 195                 double *flops_amount,
 196                 double *bytes_amount,
 197                 double rate)
 198         : CpuAction(model, 1, 0)
 199 {
 200   unsigned int cpt;
 201   int nb_link = 0;
 202   int nb_used_host = 0; /* Only the hosts with something to compute (>0 flops) are counted) */
 203   double latency = 0.0;
 204
 205   xbt_dict_t ptask_parallel_task_link_set = xbt_dict_new_homogeneous(NULL);
 206
 207   this->p_netcardList->reserve(host_nb);
 208   for (int i = 0; i<host_nb; i++)
 209           this->p_netcardList->push_back(host_list[i]->pimpl_netcard);
 210
 211   /* Compute the number of affected resources... */
 212   for (int i = 0; i < host_nb; i++) {
 213     for (int j = 0; j < host_nb; j++) {
 214       xbt_dynar_t route=NULL;
 215
 216       if (bytes_amount[i * host_nb + j] > 0) {
 217         double lat=0.0;
 218         unsigned int cpt;
 219         void *_link;
 220         LinkL07 *link;
 221
 222         routing_platf->getRouteAndLatency((*this->p_netcardList)[i], (*this->p_netcardList)[j],
 223                                                   &route, &lat);
 224         latency = MAX(latency, lat);
 225
 226         xbt_dynar_foreach(route, cpt, _link) {
 227            link = static_cast<LinkL07*>(_link);
 228            xbt_dict_set(ptask_parallel_task_link_set, link->getName(), link, NULL);
 229         }
 230       }
 231     }
 232   }
 233
 234   nb_link = xbt_dict_length(ptask_parallel_task_link_set);
 235   xbt_dict_free(&ptask_parallel_task_link_set);
 236
 237   for (int i = 0; i < host_nb; i++)
 238     if (flops_amount[i] > 0)
 239       nb_used_host++;
 240
 241   XBT_DEBUG("Creating a parallel task (%p) with %d cpus and %d links.",
 242          this, host_nb, nb_link);
 243   this->p_computationAmount = flops_amount;
 244   this->p_communicationAmount = bytes_amount;
 245   this->m_latency = latency;
 246   this->m_rate = rate;
 247
 248   this->p_variable = lmm_variable_new(model->getMaxminSystem(), this, 1.0,
 249                                         (rate > 0 ? rate : -1.0),
 250                                                                                 host_nb + nb_link);
 251
 252   if (this->m_latency > 0)
 253     lmm_update_variable_weight(model->getMaxminSystem(), this->getVariable(), 0.0);
 254
 255   for (int i = 0; i < host_nb; i++)
 256     lmm_expand(model->getMaxminSystem(),
 257                host_list[i]->pimpl_cpu->getConstraint(),
 258                this->getVariable(), flops_amount[i]);
 259
 260   for (int i = 0; i < host_nb; i++) {
 261     for (int j = 0; j < host_nb; j++) {
 262       void *_link;
 263
 264       xbt_dynar_t route=NULL;
 265       if (bytes_amount[i * host_nb + j] == 0.0)
 266         continue;
 267
 268       routing_platf->getRouteAndLatency((*this->p_netcardList)[i], (*this->p_netcardList)[j],
 269                                             &route, NULL);
 270
 271       xbt_dynar_foreach(route, cpt, _link) {
 272         LinkL07 *link = static_cast<LinkL07*>(_link);
 273         lmm_expand_add(model->getMaxminSystem(), link->getConstraint(),
 274                        this->getVariable(),
 275                        bytes_amount[i * host_nb + j]);
 276       }
 277     }
 278   }
 279
 280   if (nb_link + nb_used_host == 0) {
 281     this->setCost(1.0);
 282     this->setRemains(0.0);
 283   }
 284 }
 285
 286 Action *NetworkL07Model::communicate(NetCard *src, NetCard *dst,
 287                                        double size, double rate)
 288 {
 289   sg_host_t*host_list = xbt_new0(sg_host_t, 2);
 290   double *flops_amount = xbt_new0(double, 2);
 291   double *bytes_amount = xbt_new0(double, 4);
 292   Action *res = NULL;
 293
 294   host_list[0] = sg_host_by_name(src->getName());
 295   host_list[1] = sg_host_by_name(dst->getName());
 296   bytes_amount[1] = size;
 297
 298   res = p_hostModel->executeParallelTask(2, host_list,
 299                                     flops_amount,
 300                                     bytes_amount, rate);
 301
 302   return res;
 303 }
 304
 305 Cpu *CpuL07Model::createCpu(simgrid::s4u::Host *host,  xbt_dynar_t powerPeakList,
 306                           int pstate, double power_scale,
 307                           tmgr_trace_t power_trace, int core,
 308                           int initiallyOn,
 309                           tmgr_trace_t state_trace)
 310 {
 311   CpuL07 *cpu = new CpuL07(this, host, powerPeakList, pstate, power_scale, power_trace,
 312                          core, initiallyOn, state_trace);
 313   return cpu;
 314 }
 315
 316 Link* NetworkL07Model::createLink(const char *name,
 317                                  double bw_initial,
 318                                  tmgr_trace_t bw_trace,
 319                                  double lat_initial,
 320                                  tmgr_trace_t lat_trace,
 321                                  int initiallyOn,
 322                                  tmgr_trace_t state_trace,
 323                                  e_surf_link_sharing_policy_t policy,
 324                                  xbt_dict_t properties)
 325 {
 326   xbt_assert(!Link::byName(name),
 327                  "Link '%s' declared several times in the platform file.", name);
 328
 329   Link* link = new LinkL07(this, name, properties,
 330                              bw_initial, bw_trace,
 331                                          lat_initial, lat_trace,
 332                                          initiallyOn, state_trace,
 333                                          policy);
 334   Link::onCreation(link);
 335   return link;
 336 }
 337
 338 void HostL07Model::addTraces()
 339 {
 340   xbt_dict_cursor_t cursor = NULL;
 341   char *trace_name, *elm;
 342
 343   if (!trace_connect_list_host_avail)
 344     return;
 345
 346   /* Connect traces relative to cpu */
 347   xbt_dict_foreach(trace_connect_list_host_avail, cursor, trace_name, elm) {
 348     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 349     CpuL07 *host = static_cast<CpuL07*>(sg_host_by_name(elm)->pimpl_cpu);
 350
 351     xbt_assert(host, "Host %s undefined", elm);
 352     xbt_assert(trace, "Trace %s undefined", trace_name);
 353
 354     host->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 355   }
 356
 357   xbt_dict_foreach(trace_connect_list_power, cursor, trace_name, elm) {
 358     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 359     CpuL07 *host = static_cast<CpuL07*>(sg_host_by_name(elm)->pimpl_cpu);
 360
 361     xbt_assert(host, "Host %s undefined", elm);
 362     xbt_assert(trace, "Trace %s undefined", trace_name);
 363
 364     host->p_speedEvent = tmgr_history_add_trace(history, trace, 0.0, 0, host);
 365   }
 366
 367   /* Connect traces relative to network */
 368   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 369     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 370     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 371
 372     xbt_assert(link, "Link %s undefined", elm);
 373     xbt_assert(trace, "Trace %s undefined", trace_name);
 374
 375     link->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 376   }
 377
 378   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 379     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 380     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 381
 382     xbt_assert(link, "Link %s undefined", elm);
 383     xbt_assert(trace, "Trace %s undefined", trace_name);
 384
 385     link->p_bwEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 386   }
 387
 388   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 389     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
 390     LinkL07 *link = static_cast<LinkL07*>(Link::byName(elm));
 391
 392     xbt_assert(link, "Link %s undefined", elm);
 393     xbt_assert(trace, "Trace %s undefined", trace_name);
 394
 395     link->p_latEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 396   }
 397 }
 398
 399 /************
 400  * Resource *
 401  ************/
 402
 403 CpuL07::CpuL07(CpuL07Model *model, simgrid::s4u::Host *host,
 404                      xbt_dynar_t speedPeakList, int pstate,
 405                                  double speedScale, tmgr_trace_t speedTrace,
 406                          int core, int initiallyOn, tmgr_trace_t state_trace)
 407  : Cpu(model, host, speedPeakList, pstate,
 408            core, xbt_dynar_get_as(speedPeakList,pstate,double), speedScale, initiallyOn)
 409 {
 410   p_constraint = lmm_constraint_new(model->getMaxminSystem(), this, xbt_dynar_get_as(speedPeakList,pstate,double) * speedScale);
 411
 412   if (speedTrace)
 413     p_speedEvent = tmgr_history_add_trace(history, speedTrace, 0.0, 0, this);
 414   else
 415     p_speedEvent = NULL;
 416
 417   if (state_trace)
 418         p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 419 }
 420
 421 CpuL07::~CpuL07()
 422 {
 423 }
 424
 425 LinkL07::LinkL07(NetworkL07Model *model, const char* name, xbt_dict_t props,
 426                          double bw_initial,
 427                          tmgr_trace_t bw_trace,
 428                          double lat_initial,
 429                          tmgr_trace_t lat_trace,
 430                          int initiallyOn,
 431                          tmgr_trace_t state_trace,
 432                          e_surf_link_sharing_policy_t policy)
 433  : Link(model, name, props, lmm_constraint_new(model->getMaxminSystem(), this, bw_initial), history, state_trace)
 434 {
 435   m_bwCurrent = bw_initial;
 436   if (bw_trace)
 437     p_bwEvent = tmgr_history_add_trace(history, bw_trace, 0.0, 0, this);
 438
 439   if (initiallyOn)
 440     turnOn();
 441   else
 442     turnOff();
 443   m_latCurrent = lat_initial;
 444
 445   if (lat_trace)
 446         p_latEvent = tmgr_history_add_trace(history, lat_trace, 0.0, 0, this);
 447
 448   if (policy == SURF_LINK_FATPIPE)
 449         lmm_constraint_shared(getConstraint());
 450 }
 451
 452 Action *CpuL07::execute(double size)
 453 {
 454   sg_host_t*host_list = xbt_new0(sg_host_t, 1);
 455   double *flops_amount = xbt_new0(double, 1);
 456   double *bytes_amount = xbt_new0(double, 1);
 457
 458   host_list[0] = getHost();
 459   flops_amount[0] = size;
 460
 461   return static_cast<CpuL07Model*>(getModel())
 462     ->p_hostModel
 463     ->executeParallelTask( 1, host_list, flops_amount, bytes_amount, -1);
 464 }
 465
 466 Action *CpuL07::sleep(double duration)
 467 {
 468   L07Action *action = NULL;
 469
 470   XBT_IN("(%s,%g)", getName(), duration);
 471
 472   action = static_cast<L07Action*>(execute(1.0));
 473   action->m_maxDuration = duration;
 474   action->m_suspended = 2;
 475   lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), 0.0);
 476
 477   XBT_OUT();
 478   return action;
 479 }
 480
 481 bool CpuL07::isUsed(){
 482   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 483 }
 484
 485 /** @brief take into account changes of speed (either load or max) */
 486 void CpuL07::onSpeedChange() {
 487         lmm_variable_t var = NULL;
 488         lmm_element_t elem = NULL;
 489
 490     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_speedPeak * m_speedScale);
 491     while ((var = lmm_get_var_from_cnst
 492             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 493       Action *action = static_cast<Action*>(lmm_variable_id(var));
 494
 495       lmm_update_variable_bound(getModel()->getMaxminSystem(),
 496                                 action->getVariable(),
 497                                 m_speedScale * m_speedPeak);
 498     }
 499
 500         Cpu::onSpeedChange();
 501 }
 502
 503
 504 bool LinkL07::isUsed(){
 505   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 506 }
 507
 508 void CpuL07::updateState(tmgr_trace_iterator_t event_type, double value, double /*date*/){
 509   XBT_DEBUG("Updating cpu %s (%p) with value %g", getName(), this, value);
 510   if (event_type == p_speedEvent) {
 511         m_speedScale = value;
 512         onSpeedChange();
 513     if (tmgr_trace_event_free(event_type))
 514       p_speedEvent = NULL;
 515   } else if (event_type == p_stateEvent) {
 516     if (value > 0)
 517       turnOn();
 518     else
 519       turnOff();
 520     if (tmgr_trace_event_free(event_type))
 521       p_stateEvent = NULL;
 522   } else {
 523     XBT_CRITICAL("Unknown event ! \n");
 524     xbt_abort();
 525   }
 526   return;
 527 }
 528
 529 void LinkL07::updateState(tmgr_trace_iterator_t event_type, double value, double date) {
 530   XBT_DEBUG("Updating link %s (%p) with value=%f for date=%g", getName(), this, value, date);
 531   if (event_type == p_bwEvent) {
 532     updateBandwidth(value, date);
 533     if (tmgr_trace_event_free(event_type))
 534       p_bwEvent = NULL;
 535   } else if (event_type == p_latEvent) {
 536     updateLatency(value, date);
 537     if (tmgr_trace_event_free(event_type))
 538       p_latEvent = NULL;
 539   } else if (event_type == p_stateEvent) {
 540     if (value > 0)
 541       turnOn();
 542     else
 543       turnOff();
 544     if (tmgr_trace_event_free(event_type))
 545       p_stateEvent = NULL;
 546   } else {
 547     XBT_CRITICAL("Unknown event ! \n");
 548     xbt_abort();
 549   }
 550   return;
 551 }
 552
 553 double LinkL07::getBandwidth()
 554 {
 555   return m_bwCurrent;
 556 }
 557
 558 void LinkL07::updateBandwidth(double value, double date)
 559 {
 560   m_bwCurrent = value;
 561   lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(), m_bwCurrent);
 562 }
 563
 564 void LinkL07::updateLatency(double value, double date)
 565 {
 566   lmm_variable_t var = NULL;
 567   L07Action *action;
 568   lmm_element_t elem = NULL;
 569
 570   m_latCurrent = value;
 571   while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
 572     action = static_cast<L07Action*>(lmm_variable_id(var));
 573     action->updateBound();
 574   }
 575 }
 576
 577 /**********
 578  * Action *
 579  **********/
 580
 581 L07Action::~L07Action(){
 582   free(p_communicationAmount);
 583   free(p_computationAmount);
 584 }
 585
 586 void L07Action::updateBound()
 587 {
 588   double lat_current = 0.0;
 589   double lat_bound = -1.0;
 590   int i, j;
 591
 592   int hostNb = p_netcardList->size();
 593
 594   for (i = 0; i < hostNb; i++) {
 595     for (j = 0; j < hostNb; j++) {
 596       xbt_dynar_t route=NULL;
 597
 598       if (p_communicationAmount[i * hostNb + j] > 0) {
 599         double lat = 0.0;
 600         routing_platf->getRouteAndLatency((*p_netcardList)[i], (*p_netcardList)[j],
 601                                                           &route, &lat);
 602
 603         lat_current = MAX(lat_current, lat * p_communicationAmount[i * hostNb + j]);
 604       }
 605     }
 606   }
 607   lat_bound = sg_tcp_gamma / (2.0 * lat_current);
 608   XBT_DEBUG("action (%p) : lat_bound = %g", this, lat_bound);
 609   if ((m_latency == 0.0) && (m_suspended == 0)) {
 610     if (m_rate < 0)
 611       lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(), lat_bound);
 612     else
 613       lmm_update_variable_bound(getModel()->getMaxminSystem(), getVariable(),
 614         std::min(m_rate, lat_bound));
 615   }
 616 }
 617
 618 int L07Action::unref()
 619 {
 620   m_refcount--;
 621   if (!m_refcount) {
 622     if (action_hook.is_linked())
 623           p_stateSet->erase(p_stateSet->iterator_to(*this));
 624     if (getVariable())
 625       lmm_variable_free(getModel()->getMaxminSystem(), getVariable());
 626     delete this;
 627     return 1;
 628   }
 629   return 0;
 630 }
 631
 632 void L07Action::suspend()
 633 {
 634   XBT_IN("(%p))", this);
 635   if (m_suspended != 2) {
 636     m_suspended = 1;
 637     lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 0.0);
 638   }
 639   XBT_OUT();
 640 }
 641
 642 void L07Action::resume()
 643 {
 644   XBT_IN("(%p)", this);
 645   if (m_suspended != 2) {
 646     lmm_update_variable_weight(getModel()->getMaxminSystem(), getVariable(), 1.0);
 647     m_suspended = 0;
 648   }
 649   XBT_OUT();
 650 }
 651
 652 void L07Action::setMaxDuration(double duration)
 653 {                               /* FIXME: should inherit */
 654   XBT_IN("(%p,%g)", this, duration);
 655   m_maxDuration = duration;
 656   XBT_OUT();
 657 }
 658
 659 void L07Action::setPriority(double priority)
 660 {                               /* FIXME: should inherit */
 661   XBT_IN("(%p,%g)", this, priority);
 662   m_priority = priority;
 663   XBT_OUT();
 664 }
 665
 666 double L07Action::getRemains()
 667 {
 668   XBT_IN("(%p)", this);
 669   XBT_OUT();
 670   return m_remains;
 671 }
 672
 673 }
 674 }