src/engine/Executor.cxx

   1 // Copyright (C) 2006-2015  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "Executor.hxx"
  21 #include "Task.hxx"
  22 #include "AutoLocker.hxx"
  23 #include "Scheduler.hxx"
  24 #include "Dispatcher.hxx"
  25 #include "Container.hxx"
  26 #include "HomogeneousPoolContainer.hxx"
  27 #include "ComponentInstance.hxx"
  28
  29 #include "VisitorSaveState.hxx"
  30 #include "ServiceNode.hxx"
  31 #include "ComposedNode.hxx"
  32
  33 #include <iostream>
  34 #include <fstream>
  35 #include <sys/stat.h>
  36 #ifndef WIN32
  37 #include <sys/time.h>
  38 #include <unistd.h>
  39 #endif
  40
  41 #include <cstdlib>
  42 #include <algorithm>
  43
  44 #ifdef WIN32
  45 #define usleep(A) _sleep(A/1000)
  46 #if !defined(S_ISCHR) || !defined(S_ISREG)
  47 #  ifndef S_IFMT
  48 #    ifdef _S_IFMT
  49 #      define S_IFMT _S_IFMT
  50 #      define S_IFCHR _S_IFCHR
  51 #      define S_IFREG _S_IFREG
  52 #    else
  53 #    ifdef __S_IFMT
  54 #      define S_IFMT __S_IFMT
  55 #      define S_IFCHR __S_IFCHR
  56 #      define S_IFREG __S_IFREG
  57 #    endif
  58 #    endif
  59 #  endif
  60 #  define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
  61 #  define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
  62 #endif
  63 #endif
  64
  65 using namespace YACS::ENGINE;
  66 using namespace std;
  67
  68 using YACS::BASES::Mutex;
  69 using YACS::BASES::Thread;
  70 using YACS::BASES::Semaphore;
  71
  72 //#define _DEVDEBUG_
  73 #include "YacsTrace.hxx"
  74
  75 int Executor::_maxThreads(1000);
  76 size_t Executor::_threadStackSize(262144); // Default thread stack size is 256 kB == 2**18 because threads launched by YACS are lightweight
  77
  78 Executor::Executor():_nbOfConcurrentThreads(0), _semForMaxThreads(_maxThreads),_keepGoingOnFail(false),_DPLScopeSensitive(false)
  79 {
  80   _root=0;
  81   _toContinue = true;
  82   _isOKToEnd = false;
  83   _stopOnErrorRequested = false;
  84   _dumpOnErrorRequested = false;
  85   _errorDetected = false;
  86   _isRunningunderExternalControl=false;
  87   _executorState = YACS::NOTYETINITIALIZED;
  88   _execMode = YACS::CONTINUE;
  89   _semThreadCnt = _maxThreads;
  90   DEBTRACE("Executor initialized with max threads = " << _maxThreads);
  91 }
  92
  93 Executor::~Executor()
  94 {
  95   for(list<Thread *>::iterator iter=_groupOfAllThreadsCreated.begin();iter!=_groupOfAllThreadsCreated.end();iter++)
  96     delete *iter;
  97 }
  98
  99 //! Execute a graph waiting for completion
 100 /*!
 101  *  \param graph : schema to execute
 102  *  \param debug : display the graph with dot if debug == 1
 103  *  \param fromScratch : if true the graph is reinitialized
 104  *
 105  *  Calls Scheduler::getNextTasks and Scheduler::selectRunnableTasks to select tasks to execute
 106  *
 107  *  Calls Executor::launchTask to execute a selected Task.
 108  *
 109  *  Completion when graph is finished (Scheduler::isFinished)
 110  */
 111
 112 void Executor::RunA(Scheduler *graph,int debug, bool fromScratch)
 113 {
 114   DEBTRACE("Executor::RunW debug: " << debug << " fromScratch: " << fromScratch);
 115   _mainSched=graph;
 116   _root = dynamic_cast<ComposedNode *>(_mainSched);
 117   if (!_root) throw Exception("Executor::Run, Internal Error!");
 118   bool isMore;
 119   int i=0;
 120   if(debug>1)_displayDot(graph);
 121   if (fromScratch)
 122     {
 123       graph->init();
 124       graph->exUpdateState();
 125     }
 126   if(debug>1)_displayDot(graph);
 127   vector<Task *> tasks;
 128   vector<Task *>::iterator iter;
 129   _toContinue=true;
 130   _execMode = YACS::CONTINUE;
 131   _isWaitingEventsFromRunningTasks = false;
 132   _numberOfRunningTasks = 0;
 133   _runningTasks.clear();
 134   _numberOfEndedTasks=0;
 135   while(_toContinue)
 136     {
 137       sleepWhileNoEventsFromAnyRunningTask();
 138
 139       if(debug>2)_displayDot(graph);
 140
 141       {//Critical section
 142         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 143         tasks=graph->getNextTasks(isMore);
 144         graph->selectRunnableTasks(tasks);
 145       }//End of critical section
 146
 147       if(debug>2)_displayDot(graph);
 148
 149       for(iter=tasks.begin();iter!=tasks.end();iter++)
 150         loadTask(*iter,this);
 151
 152       if(debug>1)_displayDot(graph);
 153
 154       launchTasks(tasks);
 155
 156       if(debug>1)_displayDot(graph);
 157
 158       {//Critical section
 159         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 160         _toContinue=!graph->isFinished();
 161       }//End of critical section
 162       DEBTRACE("_toContinue: " << _toContinue);
 163
 164       if(debug>0)_displayDot(graph);
 165
 166       i++;
 167     }
 168 }
 169
 170 //! Execute a graph with breakpoints or step by step
 171 /*!
 172  *  To be launch in a thread (main thread controls the progression).
 173  *  \param graph : schema to execute
 174  *  \param debug : display the graph with dot if debug >0
 175  *  \param fromScratch : if false, state from a previous partial exection is already loaded
 176  *
 177  *  Calls Scheduler::getNextTasks and Scheduler::selectRunnableTasks to select tasks to execute
 178  *
 179  *  Calls Executor::checkBreakPoints to verify if a pause is requested
 180  *
 181  *  Calls Executor::launchTask to execute a selected Task
 182  *
 183  *  Completion when graph is finished (Scheduler::isFinished)
 184  *
 185  *  States of execution:
 186  *  - YACS::NOTYETINITIALIZED
 187  *  - YACS::INITIALISED
 188  *  - YACS::RUNNING            (to next breakpoint or step)
 189  *  - YACS::WAITINGTASKS       (a breakpoint or step as been reached, but there are still running tasks)
 190  *  - YACS::PAUSED             (a breakpoint or step as been reached, no more running tasks)
 191  *  - YACS::FINISHED           (no more ready tasks, nore running tasks)
 192  *  - YACS::STOPPED            (stopped by user before end)
 193  *
 194  *  Modes of Execution:
 195  *  - YACS::CONTINUE           (normal run without breakpoints)
 196  *  - YACS::STEPBYSTEP         (pause at each loop)
 197  *  - YACS::STOPBEFORENODES    (pause when a node is reached)
 198  *
 199  *  A breakpoint is defined by a node name. The breakpoint is reached when the node becomes ready.
 200  *  Step by Step means execution node by node or group of node by group of nodes.
 201  *  At a given step, the user decides to launch all the ready nodes or only a subset
 202  *  (Caution: some nodes must run in parallel).
 203  *  The next event (end of task) may give a new set of ready nodes, and define a new step.
 204  *
 205  *  The graph execution may be controled by a pilot which sends requests. Requests are asynchronous.
 206  *  Requests are taken into account only on certain states, otherwise return the status IgnoredRequest.
 207  *  - Executor::getCurrentExecMode
 208  *  - Executor::getExecutorState
 209  *  - Executor::setExecMode             : change the execution mode for next loop
 210  *  - Executor::setListOfBreakPoints    : must be set before setting YACS::STOPBEFORENODES
 211  *  - Executor::getTasksToLoad          : when paused or waiting tasks, get the list of next tasks
 212  *  - Executor::setStepsToExecute       : define a subset of the list given by Executor::getTasksToLoad
 213  *  - Executor::resumeCurrentBreakPoint : when paused or waiting tasks, resumes execution
 214  *  - Executor::isNotFinished
 215  *  - Executor::stopExecution           : stop execution asap, i.e. set STEPBYSTEP and wait PAUSED
 216  *  - Executor::saveState               : dump the current state of execution in an xml file
 217  *  - Executor::loadState               : Not yet implemented
 218  *  - Executor::getNbOfThreads
 219  *  - Executor::displayDot
 220  *  - Executor::setStopOnError          : ask to stop execution if a node is found in ERROR state
 221  *
 222  *  If the pilot wants to wait the state YACS::PAUSED or YACS::WAITINGTASKS, synchronisation is obtained with:
 223  *  - Executor::waitPause
 224  *
 225  *  TO BE VALIDATED:
 226  *  - Pilot may connect to executor during execution, or deconnect.
 227  *  - Several Pilots may be connected at the same time (for observation...)
 228  *
 229  */
 230
 231 void Executor::RunB(Scheduler *graph,int debug, bool fromScratch)
 232 {
 233   DEBTRACE("Executor::RunB debug: "<< graph->getName() <<" "<< debug<<" fromScratch: "<<fromScratch);
 234
 235   { // --- Critical section
 236     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 237     _mainSched = graph;
 238     _root = dynamic_cast<ComposedNode *>(_mainSched);
 239     if (!_root) throw Exception("Executor::Run, Internal Error!");
 240     _executorState = YACS::NOTYETINITIALIZED;
 241     sendEvent("executor");
 242     _toContinue=true;
 243     _isOKToEnd = false;
 244     _errorDetected = false;
 245     _isWaitingEventsFromRunningTasks = false;
 246     _numberOfRunningTasks = 0;
 247     _runningTasks.clear();
 248     _numberOfEndedTasks = 0;
 249     string tracefile = "traceExec_";
 250     tracefile += _mainSched->getName();
 251     _trace.open(tracefile.c_str());
 252 #ifdef WIN32
 253    _start = timeGetTime();
 254 #else
 255     gettimeofday(&_start, NULL);
 256 #endif
 257
 258   } // --- End of critical section
 259
 260   if (debug > 1) _displayDot(graph);
 261
 262   if (fromScratch)
 263     {
 264       try
 265         {
 266           graph->init();
 267           graph->exUpdateState();
 268         }
 269       catch(Exception& ex)
 270         {
 271           DEBTRACE("exception: "<< (ex.what()));
 272           _executorState = YACS::FINISHED;
 273           sendEvent("executor");
 274           throw;
 275         }
 276     }
 277   _executorState = YACS::INITIALISED;
 278   sendEvent("executor");
 279
 280   if (debug > 1) _displayDot(graph);
 281
 282   vector<Task *>::iterator iter;
 283   bool isMore;
 284   int problemCount=0;
 285   int numberAllTasks;
 286
 287   _executorState = YACS::RUNNING;
 288   sendEvent("executor");
 289   while (_toContinue)
 290     {
 291       DEBTRACE("--- executor main loop");
 292       sleepWhileNoEventsFromAnyRunningTask();
 293       DEBTRACE("--- events...");
 294       if (debug > 2) _displayDot(graph);
 295       { // --- Critical section
 296         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 297         _tasks=graph->getNextTasks(isMore);
 298         graph->selectRunnableTasks(_tasks);
 299         FilterTasksConsideringContainers(_tasks);
 300         numberAllTasks=_numberOfRunningTasks+_tasks.size();
 301       } // --- End of critical section
 302       if (debug > 2) _displayDot(graph);
 303       if (_executorState == YACS::RUNNING)
 304         {
 305           if (checkBreakPoints()) break; // end of thread requested, OK to exit at once;
 306           if (debug > 0) _displayDot(graph);
 307           DEBTRACE("---");
 308           //loadTasks(_tasks);
 309           loadParallelTasks(_tasks,this);
 310           if (debug > 1) _displayDot(graph);
 311           DEBTRACE("---");
 312           launchTasks(_tasks);
 313           DEBTRACE("---");
 314         }
 315       if (debug > 1) _displayDot(graph);
 316       { // --- Critical section
 317         DEBTRACE("---");
 318         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 319         //It is possible that the graph is finished but it remains running tasks (it's an error but we must take it into account)
 320         if(_numberOfRunningTasks == 0)
 321           _toContinue = !graph->isFinished();
 322
 323         DEBTRACE("_numberOfRunningTasks: " << _numberOfRunningTasks);
 324         DEBTRACE("_numberOfEndedTasks: " << _numberOfEndedTasks);
 325         DEBTRACE("_toContinue: " << _toContinue);
 326         if(_toContinue && numberAllTasks==0)
 327           {
 328             //Problem : no running tasks and no task to launch ??
 329             problemCount++;
 330             std::cerr << "Problem in Executor : no running tasks and no task to launch ?? problemCount=" << problemCount << std::endl;
 331             //Pause to give a chance to interrupt
 332             usleep(1000);
 333             if(problemCount > 25)
 334               {
 335                 // Too much problems encountered : stop execution
 336                 _toContinue=false;
 337               }
 338           }
 339
 340         if (! _toContinue)
 341           {
 342             _executorState = YACS::FINISHED;
 343             sendEvent("executor");
 344             _condForPilot.notify_all();
 345           }
 346       } // --- End of critical section
 347       if (debug > 0) _displayDot(graph);
 348       DEBTRACE("_toContinue: " << _toContinue);
 349     }
 350
 351   DEBTRACE("End of main Loop");
 352
 353   { // --- Critical section
 354     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 355     if ( _toContinue) // --- break while(): request to stop detected on checkBreakPoints()
 356       {
 357         DEBTRACE("stop requested: End soon");
 358         _executorState = YACS::STOPPED;
 359         _toContinue = false;
 360         sendEvent("executor");
 361       }
 362   } // --- End of critical section
 363   if ( _dumpOnErrorRequested && _errorDetected)
 364     {
 365       saveState(_dumpErrorFile);
 366     }
 367   {
 368     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForTrace);
 369     _trace.close();
 370   }
 371   DEBTRACE("End of RunB thread");
 372 }
 373
 374 YACS::ExecutionMode Executor::getCurrentExecMode()
 375 {
 376   _isRunningunderExternalControl=true;
 377   return _execMode;
 378 }
 379
 380
 381 YACS::ExecutorState Executor::getExecutorState()
 382 {
 383   _isRunningunderExternalControl=true;
 384   return _executorState;
 385 }
 386
 387
 388 bool Executor::isNotFinished()
 389 {
 390   _isRunningunderExternalControl=true;
 391   return _toContinue;
 392 }
 393
 394 //! ask to stop execution on the first node found in error
 395 /*!
 396  * \param dumpRequested   produce a state dump when an error is found
 397  * \param xmlFile         name of file used for state dump
 398  */
 399
 400 void Executor::setStopOnError(bool dumpRequested, std::string xmlFile)
 401 {
 402   { // --- Critical section
 403     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 404     _dumpErrorFile=xmlFile;
 405     _stopOnErrorRequested=true;
 406     _dumpOnErrorRequested = dumpRequested;
 407     if (dumpRequested && xmlFile.empty())
 408       throw YACS::Exception("dump on error requested and no filename given for dump");
 409     DEBTRACE("_dumpErrorFile " << _dumpErrorFile << " " << _dumpOnErrorRequested);
 410   } // --- End of critical section
 411 }
 412
 413 //! ask to do not stop execution on nodes found in error
 414 /*!
 415  */
 416
 417 void Executor::unsetStopOnError()
 418 {
 419   { // --- Critical section
 420     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 421     _stopOnErrorRequested=false;
 422   } // --- End of critical section
 423 }
 424
 425 //! Dynamically set the current mode of execution
 426 /*!
 427  * The mode can be Continue, step by step, or stop before execution of a node
 428  * defined in a list of breakpoints.
 429  */
 430
 431 void Executor::setExecMode(YACS::ExecutionMode mode)
 432 {
 433   DEBTRACE("Executor::setExecMode(YACS::ExecutionMode mode) " << mode);
 434   { // --- Critical section
 435     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 436     _isRunningunderExternalControl=true;
 437     _execMode = mode;
 438   } // --- End of critical section
 439 }
 440
 441 //! wake up executor when in pause
 442 /*!
 443  * When Executor is in state paused or waiting for task completion, the thread
 444  * running loop RunB waits on condition _condForStepByStep.
 445  * Thread RunB is waken up.
 446  * \return true when actually wakes up executor
 447  */
 448
 449 bool Executor::resumeCurrentBreakPoint()
 450 {
 451   DEBTRACE("Executor::resumeCurrentBreakPoint()");
 452   bool ret = false;
 453   //bool doDump = false;
 454   { // --- Critical section
 455     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 456     _isRunningunderExternalControl=true;
 457     DEBTRACE("_executorState: " << _executorState);
 458     switch (_executorState)
 459       {
 460       case YACS::WAITINGTASKS:
 461       case YACS::PAUSED:
 462         {
 463           _condForStepByStep.notify_all();
 464           _executorState = YACS::RUNNING;
 465           sendEvent("executor");
 466           ret = true;
 467           //if (_dumpOnErrorRequested && _errorDetected) doDump =true;
 468           break;
 469         }
 470       case YACS::FINISHED:
 471       case YACS::STOPPED:
 472         {
 473           //if (_dumpOnErrorRequested && _errorDetected) doDump =true;
 474           DEBTRACE("Graph Execution finished or stopped !");
 475           break;
 476         }
 477       default :
 478         {
 479           // debug: no easy way to verify if main loop is acutally waiting on condition
 480         }
 481       }
 482     DEBTRACE("---");
 483     //if (doDump) saveState(_dumpErrorFile);
 484   } // --- End of critical section
 485   return ret;
 486 }
 487
 488
 489 //! define a list of nodes names as breakpoints in the graph
 490
 491
 492 void Executor::setListOfBreakPoints(std::list<std::string> listOfBreakPoints)
 493 {
 494   DEBTRACE("Executor::setListOfBreakPoints(std::list<std::string> listOfBreakPoints)");
 495   { // --- Critical section
 496     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 497     _isRunningunderExternalControl=true;
 498     _listOfBreakPoints = listOfBreakPoints;
 499   } // --- End of critical section
 500 }
 501
 502
 503 //! Get the list of tasks to load, to define a subset to execute in step by step mode
 504 /*!
 505  *  If the executor is not in mode YACS::WAITINGTASKS nor YACS::PAUSED, the list is empty.
 506  *  Use Executor::waitPause to wait.
 507  */
 508 std::list<std::string> Executor::getTasksToLoad()
 509 {
 510   DEBTRACE("Executor::getTasksToLoad()");
 511   list<string> listOfNodesToLoad;
 512   listOfNodesToLoad.clear();
 513   { // --- Critical section
 514     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 515     _isRunningunderExternalControl=true;
 516     switch (_executorState)
 517       {
 518       case YACS::WAITINGTASKS:
 519       case YACS::PAUSED:
 520         {
 521           listOfNodesToLoad = _listOfTasksToLoad;
 522           break;
 523         }
 524       case YACS::NOTYETINITIALIZED:
 525       case YACS::INITIALISED:
 526       case YACS::RUNNING:
 527       case YACS::FINISHED:
 528       case YACS::STOPPED:
 529       default:
 530         {
 531           break;
 532         }
 533       }
 534   } // --- End of critical section
 535   return listOfNodesToLoad;
 536 }
 537
 538
 539 //! Define a subset of task to execute in step by step mode
 540 /*!
 541  * Behaviour is unpredictable if the list is not a subset of the list given by Executor::getTasksToLoad
 542  * in the current step.
 543  * If some nodes must run in parallel, they must stay together in the list.
 544  */
 545
 546 bool Executor::setStepsToExecute(std::list<std::string> listToExecute)
 547 {
 548   DEBTRACE("Executor::setStepsToExecute(std::list<std::string> listToExecute)");
 549   bool ret = true;
 550   vector<Task *>::iterator iter;
 551   vector<Task *> restrictedTasks;
 552   { // --- Critical section
 553     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 554     _isRunningunderExternalControl=true;
 555     switch (_executorState)
 556       {
 557       case YACS::WAITINGTASKS:
 558       case YACS::PAUSED:
 559         {
 560           for (iter=_tasksSave.begin(); iter!=_tasksSave.end(); iter++)
 561             {
 562               string readyNode = _mainSched->getTaskName(*iter);
 563               if (find(listToExecute.begin(), listToExecute.end(), readyNode)
 564                   != listToExecute.end())
 565                 {
 566                   restrictedTasks.push_back(*iter);
 567                   DEBTRACE("node to execute " << readyNode);
 568                 }
 569             }
 570           _tasks.clear();
 571           for (iter=restrictedTasks.begin(); iter!=restrictedTasks.end(); iter++)
 572             {
 573               _tasks.push_back(*iter);
 574             }
 575           break;
 576         }
 577       case YACS::NOTYETINITIALIZED:
 578       case YACS::INITIALISED:
 579       case YACS::RUNNING:
 580       case YACS::FINISHED:
 581       case YACS::STOPPED:
 582       default:
 583         {
 584           break;
 585         }
 586       }
 587     } // --- End of critical section
 588
 589   _tasks.clear();
 590   for (iter=restrictedTasks.begin(); iter!=restrictedTasks.end(); iter++)
 591     {
 592       _tasks.push_back(*iter);
 593     }
 594   for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
 595     {
 596       string readyNode = _mainSched->getTaskName(*iter);
 597       DEBTRACE("selected node to execute " << readyNode);
 598     }
 599
 600   return ret;
 601 }
 602
 603 //! suspend pilot execution until Executor is in pause or waiting tasks completion mode.
 604 /*!
 605  *  Do nothing if execution is finished or in pause.
 606  *  Wait first step if Executor is running or in initialization.
 607  */
 608
 609 void Executor::waitPause()
 610 {
 611   DEBTRACE("Executor::waitPause()" << _executorState);
 612   { // --- Critical section
 613     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 614     _isRunningunderExternalControl=true;
 615     switch (_executorState)
 616       {
 617       default:
 618       case YACS::STOPPED:
 619       case YACS::FINISHED:
 620       case YACS::WAITINGTASKS:
 621       case YACS::PAUSED:
 622         {
 623           break;
 624         }
 625       case YACS::NOTYETINITIALIZED:
 626       case YACS::INITIALISED:
 627       case YACS::RUNNING:
 628         {
 629           _condForPilot.wait(_mutexForSchedulerUpdate); // wait until executor is PAUSED or WAITINGTASKS
 630           break;
 631         }
 632       }
 633   } // --- End of critical section
 634   DEBTRACE("---");
 635 }
 636
 637 //! stops the execution as soon as possible
 638
 639 void Executor::stopExecution()
 640 {
 641   setExecMode(YACS::STEPBYSTEP);
 642   //waitPause();
 643   _isOKToEnd = true;
 644   resumeCurrentBreakPoint();
 645 }
 646
 647 //! save the current state of execution in an xml file
 648
 649 bool Executor::saveState(const std::string& xmlFile)
 650 {
 651   DEBTRACE("Executor::saveState() in " << xmlFile);
 652   bool result = false;
 653   try {
 654     YACS::ENGINE::VisitorSaveState vst(_root);
 655     vst.openFileDump(xmlFile.c_str());
 656     _root->accept(&vst);
 657     vst.closeFileDump();
 658     result = true;
 659   }
 660   catch(Exception& ex) {
 661     std::cerr << ex.what() << std::endl;
 662   }
 663   return result;
 664 }
 665
 666 //! not yet implemented
 667
 668 bool Executor::loadState()
 669 {
 670   DEBTRACE("Executor::loadState()");
 671   _isRunningunderExternalControl=true;
 672   return true;
 673 }
 674
 675
 676 static int isfile(const char *filename)
 677 {
 678   struct stat buf;
 679   if (stat(filename, &buf) != 0)
 680     return 0;
 681   if (!S_ISREG(buf.st_mode))
 682     return 0;
 683   return 1;
 684 }
 685
 686 //! Display the graph state as a dot display, public method
 687
 688 void Executor::displayDot(Scheduler *graph)
 689 {
 690   _isRunningunderExternalControl=true;
 691   _displayDot(graph);
 692 }
 693
 694 //! Display the graph state as a dot display
 695 /*!
 696  *  \param graph  : the node to display
 697  */
 698
 699 void Executor::_displayDot(Scheduler *graph)
 700 {
 701    std::ofstream g("titi");
 702    ((ComposedNode*)graph)->writeDot(g);
 703    g.close();
 704    const char displayScript[]="display.sh";
 705    if(isfile(displayScript))
 706      system("sh display.sh");
 707    else
 708      system("dot -Tpng titi|display -delay 5");
 709 }
 710
 711 //! Wait reactivation in modes Step By step or with BreakPoints
 712 /*!
 713  *  Check mode of execution (set by main thread):
 714  *  - YACS::CONTINUE        : the graph execution continues.
 715  *  - YACS::STEPBYSTEP      : wait on condition (pilot thread, Executor::resumeCurrentBreakPoint)
 716  *  - YACS::STOPBEFORENODES : if there are ready nodes in a list of breakpoints,
 717  *                            wait on condition (pilot thread, Executor::resumeCurrentBreakPoint)
 718  *                            else continue the graph execution.
 719  *  \return true if end of executor thread is requested
 720  */
 721
 722 bool Executor::checkBreakPoints()
 723 {
 724   DEBTRACE("Executor::checkBreakPoints()");
 725   vector<Task *>::iterator iter;
 726   bool endRequested = false;
 727
 728   switch (_execMode)
 729     {
 730     case YACS::CONTINUE:
 731       {
 732         break;
 733       }
 734     case YACS::STOPBEFORENODES:
 735       {
 736         bool stop = false;
 737         { // --- Critical section
 738           YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 739           _tasksSave = _tasks;
 740           for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
 741             {
 742               string nodeToLoad = _mainSched->getTaskName(*iter);
 743               if (find(_listOfBreakPoints.begin(), _listOfBreakPoints.end(), nodeToLoad)
 744                   != _listOfBreakPoints.end())
 745                 {
 746                   stop = true;
 747                   break;
 748                 }
 749             }
 750           if (stop)
 751             {
 752               _listOfTasksToLoad.clear();
 753               for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
 754                 {
 755                   string nodeToLoad = _mainSched->getTaskName(*iter);
 756                   _listOfTasksToLoad.push_back(nodeToLoad);
 757                 }
 758               if (getNbOfThreads())
 759                 _executorState = YACS::WAITINGTASKS; // will be paused after completion of running tasks
 760               else
 761                 _executorState = YACS::PAUSED;
 762               sendEvent("executor");
 763               _condForPilot.notify_all();
 764             }
 765           if (stop && !_isOKToEnd) waitResume(); // wait until pilot calls resumeCurrentBreakPoint(), mutex released during wait
 766           if (_isOKToEnd) endRequested = true;
 767         } // --- End of critical section
 768           if (stop) DEBTRACE("wake up from waitResume");
 769         break;
 770       }
 771     default:
 772     case YACS::STEPBYSTEP:
 773       {
 774         { // --- Critical section
 775           YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 776           _tasksSave = _tasks;
 777           _listOfTasksToLoad.clear();
 778           for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
 779             {
 780               string nodeToLoad = _mainSched->getTaskName(*iter);
 781               _listOfTasksToLoad.push_back(nodeToLoad);
 782             }
 783           if (getNbOfThreads())
 784             _executorState = YACS::WAITINGTASKS; // will be paused after completion of running tasks
 785           else
 786             _executorState = YACS::PAUSED;
 787           sendEvent("executor");
 788           _condForPilot.notify_all();
 789           if (!_isOKToEnd)
 790             waitResume(); // wait until pilot calls resumeCurrentBreakPoint(), mutex released during wait
 791                           // or, if no pilot, wait until no more running tasks (stop on error)
 792           if (_isOKToEnd) endRequested = true;
 793         } // --- End of critical section
 794         DEBTRACE("wake up from waitResume");
 795         break;
 796       }
 797     }
 798   DEBTRACE("endRequested: " << endRequested);
 799   return endRequested;
 800 }
 801
 802
 803 //! in modes Step By step or with BreakPoint, wait until pilot resumes the execution
 804 /*!
 805  *  With the condition Mutex, the mutex is released atomically during the wait.
 806  *  Pilot calls Executor::resumeCurrentBreakPoint to resume execution.
 807  *  Must be called while mutex is locked.
 808  */
 809
 810 void Executor::waitResume()
 811 {
 812   DEBTRACE("Executor::waitResume()");
 813   _condForStepByStep.wait(_mutexForSchedulerUpdate); // wait until pilot calls resumeCurrentBreakPoint()
 814   DEBTRACE("---");
 815 }
 816
 817
 818 //! Perform loading of a Task.
 819 /*!
 820  *  \param task  : Task to load
 821  */
 822
 823 void Executor::loadTask(Task *task, const Executor *execInst)
 824 {
 825   DEBTRACE("Executor::loadTask(Task *task)");
 826   if(task->getState() != YACS::TOLOAD)
 827     return;
 828   traceExec(task, "state:TOLOAD", ComputePlacement(task));
 829   {//Critical section
 830     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 831     _mainSched->notifyFrom(task,YACS::START,execInst);
 832   }//End of critical section
 833   try
 834     {
 835       traceExec(task, "load", ComputePlacement(task));
 836       task->load();
 837       traceExec(task, "initService", ComputePlacement(task));
 838       task->initService();
 839     }
 840   catch(Exception& ex)
 841     {
 842       std::cerr << ex.what() << std::endl;
 843       {//Critical section
 844         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 845         task->aborted();
 846         _mainSched->notifyFrom(task,YACS::ABORT,execInst);
 847         traceExec(task, "state:"+Node::getStateName(task->getState()), ComputePlacement(task));
 848       }//End of critical section
 849     }
 850   catch(...)
 851     {
 852       std::cerr << "Load failed" << std::endl;
 853       {//Critical section
 854         YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 855         task->aborted();
 856         _mainSched->notifyFrom(task,YACS::ABORT,execInst);
 857         traceExec(task, "state:"+Node::getStateName(task->getState()), ComputePlacement(task));
 858       }//End of critical section
 859     }
 860 }
 861
 862 struct threadargs
 863 {
 864   Task *task;
 865   Scheduler *sched;
 866   Executor *execInst;
 867 };
 868
 869 void Executor::loadTasks(const std::vector<Task *>& tasks, const Executor *execInst)
 870 {
 871   for(std::vector<Task *>::const_iterator iter = _tasks.begin(); iter != _tasks.end(); iter++)
 872     loadTask(*iter,execInst);
 873 }
 874
 875 void Executor::loadParallelTasks(const std::vector<Task *>& tasks, const Executor *execInst)
 876 {
 877   std::vector<Thread> ths(tasks.size());
 878   std::size_t ithread(0);
 879   for(std::vector<Task *>::const_iterator iter = _tasks.begin(); iter != _tasks.end(); iter++, ithread++)
 880     {
 881       DEBTRACE("Executor::loadParallelTasks(Task *task)");
 882       struct threadargs *args(new threadargs);
 883       args->task = (*iter);
 884       args->sched = _mainSched;
 885       args->execInst = this;
 886       ths[ithread].go(functionForTaskLoad, args, _threadStackSize);
 887     }
 888   for(ithread=0;ithread<tasks.size();ithread++)
 889     ths[ithread].join();
 890 }
 891
 892 //! Execute a list of tasks possibly connected through datastream links
 893 /*!
 894  *  \param tasks  : a list of tasks to execute
 895  *
 896  */
 897 void Executor::launchTasks(const std::vector<Task *>& tasks)
 898 {
 899   //First phase, make datastream connections
 900   for(vector<Task *>::const_iterator iter=tasks.begin();iter!=tasks.end();iter++)
 901     {
 902       YACS::StatesForNode state=(*iter)->getState();
 903       if(state != YACS::TOLOAD && state != YACS::TORECONNECT)continue;
 904       try
 905         {
 906           (*iter)->connectService();
 907           traceExec(*iter, "connectService",ComputePlacement(*iter));
 908           {//Critical section
 909             YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 910             (*iter)->connected();
 911           }//End of critical section
 912         }
 913       catch(Exception& ex)
 914         {
 915           std::cerr << ex.what() << std::endl;
 916           try
 917             {
 918               (*iter)->disconnectService();
 919               traceExec(*iter, "disconnectService",ComputePlacement(*iter));
 920             }
 921           catch(...)
 922             {
 923               // Disconnect has failed
 924               traceExec(*iter, "disconnectService failed, ABORT",ComputePlacement(*iter));
 925             }
 926           {//Critical section
 927             YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 928             (*iter)->aborted();
 929             _mainSched->notifyFrom(*iter,YACS::ABORT,this);
 930           }//End of critical section
 931         }
 932       catch(...)
 933         {
 934           std::cerr << "Problem in connectService" << std::endl;
 935           try
 936             {
 937               (*iter)->disconnectService();
 938               traceExec(*iter, "disconnectService",ComputePlacement(*iter));
 939             }
 940           catch(...)
 941             {
 942               // Disconnect has failed
 943               traceExec(*iter, "disconnectService failed, ABORT",ComputePlacement(*iter));
 944             }
 945           {//Critical section
 946             YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 947             (*iter)->aborted();
 948             _mainSched->notifyFrom(*iter,YACS::ABORT,this);
 949           }//End of critical section
 950         }
 951       if((*iter)->getState() == YACS::ERROR)
 952         {
 953           //try to put all coupled tasks in error
 954           std::set<Task*> coupledSet;
 955           (*iter)->getCoupledTasks(coupledSet);
 956           for (std::set<Task*>::iterator it = coupledSet.begin(); it != coupledSet.end(); ++it)
 957             {
 958               Task* t=*it;
 959               if(t == *iter)continue;
 960               if(t->getState() == YACS::ERROR)continue;
 961               try
 962                 {
 963                   t->disconnectService();
 964                   traceExec(t, "disconnectService",ComputePlacement(*iter));
 965                 }
 966               catch(...)
 967                 {
 968                   // Disconnect has failed
 969                   traceExec(t, "disconnectService failed, ABORT",ComputePlacement(*iter));
 970                 }
 971               {//Critical section
 972                 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
 973                 t->aborted();
 974                 _mainSched->notifyFrom(t,YACS::ABORT,this);
 975               }//End of critical section
 976               traceExec(t, "state:"+Node::getStateName(t->getState()),ComputePlacement(*iter));
 977             }
 978         }
 979       traceExec(*iter, "state:"+Node::getStateName((*iter)->getState()),ComputePlacement(*iter));
 980     }
 981
 982   //Second phase, execute each task in a thread
 983   for(vector<Task *>::const_iterator iter=tasks.begin();iter!=tasks.end();iter++)
 984     {
 985       launchTask(*iter);
 986     }
 987 }
 988
 989 //! Execute a Task in a thread
 990 /*!
 991  *  \param task  : Task to execute
 992  *
 993  *  Calls Scheduler::notifyFrom of main node (_mainSched) to notify start
 994  *
 995  *  Calls Executor::functionForTaskExecution in Thread
 996  */
 997
 998 void Executor::launchTask(Task *task)
 999 {
1000   DEBTRACE("Executor::launchTask(Task *task)");
1001   struct threadargs *args;
1002   if(task->getState() != YACS::TOACTIVATE)return;
1003
1004   DEBTRACE("before _semForMaxThreads.wait " << _semThreadCnt);
1005   if(_semThreadCnt == 0)
1006     {
1007       // --- Critical section
1008       YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1009       //check if we have enough threads to run
1010       std::set<Task*> tmpSet=_runningTasks;
1011       std::set<Task*>::iterator it = tmpSet.begin();
1012       std::string status="running";
1013       std::set<Task*> coupledSet;
1014       while( it != tmpSet.end() )
1015         {
1016           Task* tt=*it;
1017           coupledSet.clear();
1018           tt->getCoupledTasks(coupledSet);
1019           status="running";
1020           for (std::set<Task*>::iterator iter = coupledSet.begin(); iter != coupledSet.end(); ++iter)
1021             {
1022               if((*iter)->getState() == YACS::TOACTIVATE)status="toactivate";
1023               tmpSet.erase(*iter);
1024             }
1025           if(status=="running")break;
1026           it = tmpSet.begin();
1027         }
1028
1029       if(status=="toactivate")
1030         {
1031           std::cerr << "WARNING: maybe you need more threads to run your schema (current value="<< _maxThreads << ")" << std::endl;
1032           std::cerr << "If it is the case, set the YACS_MAX_THREADS environment variable to a bigger value (export YACS_MAX_THREADS=xxx)" << std::endl;
1033         }
1034       // --- End of critical section
1035     }
1036
1037   _semForMaxThreads.wait();
1038   _semThreadCnt -= 1;
1039
1040   args= new threadargs;
1041   args->task = task;
1042   args->sched = _mainSched;
1043   args->execInst = this;
1044
1045   traceExec(task, "launch",ComputePlacement(task));
1046
1047   { // --- Critical section
1048     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1049     _numberOfRunningTasks++;
1050     _runningTasks.insert(task);
1051     task->begin(); //change state to ACTIVATED
1052   } // --- End of critical section
1053   Thread(functionForTaskExecution, args, _threadStackSize);
1054 }
1055
1056 //! wait until a running task ends
1057
1058 void Executor::sleepWhileNoEventsFromAnyRunningTask()
1059 {
1060   DEBTRACE("Executor::sleepWhileNoEventsFromAnyRunningTask()");
1061 //   _semForNewTasksToPerform.wait(); //----utiliser pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
1062   YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1063   if (_numberOfRunningTasks > 0 && _numberOfEndedTasks==0)
1064     {
1065       _isWaitingEventsFromRunningTasks = true;
1066       _condForNewTasksToPerform.wait(_mutexForSchedulerUpdate); // mutex released during wait
1067     }
1068   _numberOfEndedTasks=0;
1069   DEBTRACE("---");
1070 }
1071
1072 //! not implemented
1073
1074 void Executor::notifyEndOfThread(YACS::BASES::Thread *thread)
1075 {
1076   /*_mutexForNbOfConcurrentThreads.lock();
1077   _groupOfAllThreadsCreated.remove(thread);
1078   delete thread;
1079   _mutexForNbOfConcurrentThreads.unlock();*/
1080 }
1081
1082
1083 //! must be used protected by _mutexForSchedulerUpdate!
1084
1085 void Executor::wakeUp()
1086 {
1087   DEBTRACE("Executor::wakeUp() " << _isWaitingEventsFromRunningTasks);
1088   if (_isWaitingEventsFromRunningTasks)
1089     {
1090       _isWaitingEventsFromRunningTasks = false;
1091       _condForNewTasksToPerform.notify_all();
1092     }
1093   else
1094     _numberOfEndedTasks++;
1095 }
1096
1097 //! number of running tasks
1098
1099 int Executor::getNbOfThreads()
1100 {
1101   int ret;
1102   YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForNbOfConcurrentThreads);
1103   _isRunningunderExternalControl=true;
1104   ret = _groupOfAllThreadsCreated.size();
1105   return ret;
1106 }
1107
1108 /*!
1109  * This thread is NOT supposed to be detached !
1110  */
1111 void *Executor::functionForTaskLoad(void *arg)
1112 {
1113   DEBTRACE("Executor::functionForTaskLoad(void *arg)");
1114   struct threadargs *args = (struct threadargs *) arg;
1115   Task *task=args->task;
1116   Scheduler *sched=args->sched;
1117   Executor *execInst=args->execInst;
1118   delete args;
1119   execInst->loadTask(task,execInst);// no throw of this method - all throw are catched !
1120   return 0;
1121 }
1122
1123 //! Function to perform execution of a task in a thread
1124 /*!
1125  *  \param arg  : 3 elements (a Task, a Scheduler, an Executor)
1126  *
1127  *  Calls Task::execute
1128  *
1129  *  Calls Task::finished when the task is finished
1130  *
1131  *  Calls (notify with event YACS::FINISH) Scheduler::notifyFrom when the task is finished
1132  *
1133  *  Calls Executor::wakeUp and Executor::notifyEndOfThread
1134  */
1135
1136 void *Executor::functionForTaskExecution(void *arg)
1137 {
1138   DEBTRACE("Executor::functionForTaskExecution(void *arg)");
1139
1140   struct threadargs *args = (struct threadargs *) arg;
1141   Task *task=args->task;
1142   Scheduler *sched=args->sched;
1143   Executor *execInst=args->execInst;
1144   delete args;
1145   execInst->traceExec(task, "state:"+Node::getStateName(task->getState()),ComputePlacement(task));
1146
1147   Thread::detach();
1148
1149   // Execute task
1150
1151   if(execInst->getDPLScopeSensitive())
1152     {
1153       Node *node(dynamic_cast<Node *>(task));
1154       ComposedNode *gfn(dynamic_cast<ComposedNode *>(sched));
1155       if(node!=0 && gfn!=0)
1156         node->applyDPLScope(gfn);
1157     }
1158
1159   YACS::Event ev=YACS::FINISH;
1160   try
1161     {
1162       execInst->traceExec(task, "start execution",ComputePlacement(task));
1163       task->execute();
1164       execInst->traceExec(task, "end execution OK",ComputePlacement(task));
1165     }
1166   catch(Exception& ex)
1167     {
1168       std::cerr << "YACS Exception during execute" << std::endl;
1169       std::cerr << ex.what() << std::endl;
1170       ev=YACS::ABORT;
1171       string message = "end execution ABORT, ";
1172       message += ex.what();
1173       execInst->traceExec(task, message,ComputePlacement(task));
1174     }
1175   catch(...)
1176     {
1177       // Execution has failed
1178       std::cerr << "Execution has failed: unknown reason" << std::endl;
1179       ev=YACS::ABORT;
1180       execInst->traceExec(task, "end execution ABORT, unknown reason",ComputePlacement(task));
1181     }
1182
1183   // Disconnect task
1184   try
1185     {
1186       DEBTRACE("task->disconnectService()");
1187       task->disconnectService();
1188       execInst->traceExec(task, "disconnectService",ComputePlacement(task));
1189     }
1190   catch(...)
1191     {
1192       // Disconnect has failed
1193       std::cerr << "disconnect has failed" << std::endl;
1194       ev=YACS::ABORT;
1195       execInst->traceExec(task, "disconnectService failed, ABORT",ComputePlacement(task));
1196     }
1197   //
1198
1199   std::string placement(ComputePlacement(task));
1200
1201   // container management for HomogeneousPoolOfContainer
1202
1203   HomogeneousPoolContainer *contC(dynamic_cast<HomogeneousPoolContainer *>(task->getContainer()));
1204   if(contC)
1205     {
1206       YACS::BASES::AutoLocker<Container> alckCont(contC);
1207       contC->release(task);
1208     }
1209
1210   DEBTRACE("End task->execute()");
1211   { // --- Critical section
1212     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&execInst->_mutexForSchedulerUpdate);
1213     try
1214       {
1215         if (ev == YACS::FINISH) task->finished();
1216         if (ev == YACS::ABORT)
1217           {
1218             execInst->_errorDetected = true;
1219             if (execInst->_stopOnErrorRequested)
1220               {
1221                 execInst->_execMode = YACS::STEPBYSTEP;
1222                 execInst->_isOKToEnd = true;
1223               }
1224             task->aborted();
1225           }
1226         execInst->traceExec(task, "state:"+Node::getStateName(task->getState()),placement);
1227         sched->notifyFrom(task,ev,execInst);
1228       }
1229     catch(Exception& ex)
1230       {
1231         //notify has failed : it is supposed to have set state
1232         //so no need to do anything
1233         std::cerr << "Error during notification" << std::endl;
1234         std::cerr << ex.what() << std::endl;
1235       }
1236     catch(...)
1237       {
1238         //notify has failed : it is supposed to have set state
1239         //so no need to do anything
1240         std::cerr << "Notification failed" << std::endl;
1241       }
1242     execInst->_numberOfRunningTasks--;
1243     execInst->_runningTasks.erase(task);
1244     DEBTRACE("_numberOfRunningTasks: " << execInst->_numberOfRunningTasks
1245              << " _execMode: " << execInst->_execMode
1246              << " _executorState: " << execInst->_executorState);
1247     if ((execInst->_numberOfRunningTasks == 0) && (execInst->_execMode != YACS::CONTINUE)) // no more running tasks
1248       {
1249         if (execInst->_executorState == YACS::WAITINGTASKS)
1250           {
1251             execInst->_executorState = YACS::PAUSED;
1252             execInst->sendEvent("executor");
1253             execInst->_condForPilot.notify_all();
1254             if (execInst->_errorDetected &&
1255                 execInst->_stopOnErrorRequested &&
1256                 !execInst->_isRunningunderExternalControl)
1257               execInst->_condForStepByStep.notify_all(); // exec thread may be on waitResume
1258           }
1259       }
1260     DEBTRACE("before _semForMaxThreads.post " << execInst->_semThreadCnt);
1261     execInst->_semForMaxThreads.post();
1262     execInst->_semThreadCnt += 1;
1263     DEBTRACE("after _semForMaxThreads.post " << execInst->_semThreadCnt);
1264     if (execInst->_executorState != YACS::PAUSED)  execInst->wakeUp();
1265
1266   } // --- End of critical section (change state)
1267
1268   //execInst->notifyEndOfThread(0);
1269   Thread::exit(0);
1270   return 0;
1271 }
1272
1273 void Executor::traceExec(Task *task, const std::string& message, const std::string& placement)
1274 {
1275   string nodeName = _mainSched->getTaskName(task);
1276   Container *cont = task->getContainer();
1277   string containerName = "---";
1278   if (cont)
1279     containerName = cont->getName();
1280
1281 #ifdef WIN32
1282   DWORD now = timeGetTime();
1283   double elapse = (now - _start)/1000.0;
1284 #else
1285   timeval now;
1286   gettimeofday(&now, NULL);
1287   double elapse = (now.tv_sec - _start.tv_sec) + double(now.tv_usec - _start.tv_usec)/1000000.0;
1288 #endif
1289   {
1290     YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForTrace);
1291     _trace << elapse << " " << containerName << " " << placement << " " << nodeName << " " << message << endl;
1292     _trace << flush;
1293   }
1294 }
1295
1296 //! emit notification to all observers registered with  the dispatcher
1297 /*!
1298  * The dispatcher is unique and can be obtained by getDispatcher()
1299  */
1300 void Executor::sendEvent(const std::string& event)
1301 {
1302   Dispatcher* disp=Dispatcher::getDispatcher();
1303   YASSERT(disp);
1304   YASSERT(_root);
1305   disp->dispatch(_root,event);
1306 }
1307
1308 /*!
1309  * This method takes in input a list of tasks and selects from that lists a part of it considering only the containers.
1310  * If tasks have no container instance subclass of HomogeneousPoolContainer this method will let the \a tsks untouched.
1311  *
1312  * \param [in,out] tsks - list of tasks to be
1313  */
1314 void Executor::FilterTasksConsideringContainers(std::vector<Task *>& tsks)
1315 {
1316   std::map<HomogeneousPoolContainer *, std::vector<Task *> > m;
1317   for(std::vector<Task *>::const_iterator it=tsks.begin();it!=tsks.end();it++)
1318     {
1319       Task *cur(*it);
1320       if(!cur)
1321         continue;
1322       Container *cont(cur->getContainer());
1323       if(!cont)
1324         {
1325           m[(HomogeneousPoolContainer *)NULL].push_back(cur);
1326           continue;
1327         }
1328       HomogeneousPoolContainer *contC(dynamic_cast<HomogeneousPoolContainer *>(cont));
1329       if(!contC)
1330         {
1331           m[(HomogeneousPoolContainer *)NULL].push_back(cur);
1332           continue;
1333         }
1334       m[contC].push_back(cur);
1335     }
1336   //
1337   std::vector<Task *> ret;
1338   for(std::map<HomogeneousPoolContainer *, std::vector<Task *> >::const_iterator it=m.begin();it!=m.end();it++)
1339     {
1340       HomogeneousPoolContainer *curhpc((*it).first);
1341       const std::vector<Task *>& curtsks((*it).second);
1342       if(!curhpc)
1343         {
1344           ret.insert(ret.end(),curtsks.begin(),curtsks.end());
1345         }
1346       else
1347         {
1348           // start of critical section for container curhpc
1349           YACS::BASES::AutoLocker<Container> alckForCont(curhpc);
1350           std::vector<const Task *> vecOfTaskSharingSameHPContToBeRunSimutaneously;
1351           std::size_t sz(curhpc->getNumberOfFreePlace());
1352           std::vector<Task *>::const_iterator it2(curtsks.begin());
1353           for(std::size_t i=0;i<sz && it2!=curtsks.end();i++,it2++)
1354             {
1355               vecOfTaskSharingSameHPContToBeRunSimutaneously.push_back(*it2);
1356               ret.push_back(*it2);
1357             }
1358           curhpc->allocateFor(vecOfTaskSharingSameHPContToBeRunSimutaneously);
1359           //end of critical section
1360         }
1361     }
1362   //
1363   tsks=ret;
1364 }
1365
1366 std::string Executor::ComputePlacement(Task *zeTask)
1367 {
1368   std::string placement("---");
1369   if(!zeTask)
1370     return placement;
1371   if(zeTask->getContainer())
1372     placement=zeTask->getContainer()->getFullPlacementId(zeTask);
1373   return placement;
1374 }