1 // Copyright (C) 2006-2015 CEA/DEN, EDF R&D
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.
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.
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
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 #include "Executor.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"
29 #include "VisitorSaveState.hxx"
30 #include "ServiceNode.hxx"
31 #include "ComposedNode.hxx"
45 #define usleep(A) _sleep(A/1000)
46 #if !defined(S_ISCHR) || !defined(S_ISREG)
49 # define S_IFMT _S_IFMT
50 # define S_IFCHR _S_IFCHR
51 # define S_IFREG _S_IFREG
54 # define S_IFMT __S_IFMT
55 # define S_IFCHR __S_IFCHR
56 # define S_IFREG __S_IFREG
60 # define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
61 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
65 using namespace YACS::ENGINE;
68 using YACS::BASES::Mutex;
69 using YACS::BASES::Thread;
70 using YACS::BASES::Semaphore;
73 #include "YacsTrace.hxx"
75 int Executor::_maxThreads(50);
76 size_t Executor::_threadStackSize(1048576); // Default thread stack size is 1MB
78 Executor::Executor():_nbOfConcurrentThreads(0), _semForMaxThreads(_maxThreads),_keepGoingOnFail(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);
95 for(list<Thread *>::iterator iter=_groupOfAllThreadsCreated.begin();iter!=_groupOfAllThreadsCreated.end();iter++)
99 //! Execute a graph waiting for completion
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
105 * Calls Scheduler::getNextTasks and Scheduler::selectRunnableTasks to select tasks to execute
107 * Calls Executor::launchTask to execute a selected Task.
109 * Completion when graph is finished (Scheduler::isFinished)
112 void Executor::RunA(Scheduler *graph,int debug, bool fromScratch)
114 DEBTRACE("Executor::RunW debug: " << debug << " fromScratch: " << fromScratch);
116 _root = dynamic_cast<ComposedNode *>(_mainSched);
117 if (!_root) throw Exception("Executor::Run, Internal Error!");
120 if(debug>1)_displayDot(graph);
124 graph->exUpdateState();
126 if(debug>1)_displayDot(graph);
127 vector<Task *> tasks;
128 vector<Task *>::iterator iter;
130 _execMode = YACS::CONTINUE;
131 _isWaitingEventsFromRunningTasks = false;
132 _numberOfRunningTasks = 0;
133 _runningTasks.clear();
134 _numberOfEndedTasks=0;
137 sleepWhileNoEventsFromAnyRunningTask();
139 if(debug>2)_displayDot(graph);
142 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
143 tasks=graph->getNextTasks(isMore);
144 graph->selectRunnableTasks(tasks);
145 }//End of critical section
147 if(debug>2)_displayDot(graph);
149 for(iter=tasks.begin();iter!=tasks.end();iter++)
150 loadTask(*iter,this);
152 if(debug>1)_displayDot(graph);
156 if(debug>1)_displayDot(graph);
159 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
160 _toContinue=!graph->isFinished();
161 }//End of critical section
162 DEBTRACE("_toContinue: " << _toContinue);
164 if(debug>0)_displayDot(graph);
170 //! Execute a graph with breakpoints or step by step
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
177 * Calls Scheduler::getNextTasks and Scheduler::selectRunnableTasks to select tasks to execute
179 * Calls Executor::checkBreakPoints to verify if a pause is requested
181 * Calls Executor::launchTask to execute a selected Task
183 * Completion when graph is finished (Scheduler::isFinished)
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)
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)
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.
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
222 * If the pilot wants to wait the state YACS::PAUSED or YACS::WAITINGTASKS, synchronisation is obtained with:
223 * - Executor::waitPause
226 * - Pilot may connect to executor during execution, or deconnect.
227 * - Several Pilots may be connected at the same time (for observation...)
231 void Executor::RunB(Scheduler *graph,int debug, bool fromScratch)
233 DEBTRACE("Executor::RunB debug: "<< graph->getName() <<" "<< debug<<" fromScratch: "<<fromScratch);
235 { // --- Critical section
236 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
238 _root = dynamic_cast<ComposedNode *>(_mainSched);
239 if (!_root) throw Exception("Executor::Run, Internal Error!");
240 _executorState = YACS::NOTYETINITIALIZED;
241 sendEvent("executor");
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());
253 _start = timeGetTime();
255 gettimeofday(&_start, NULL);
258 } // --- End of critical section
260 if (debug > 1) _displayDot(graph);
267 graph->exUpdateState();
271 DEBTRACE("exception: "<< (ex.what()));
272 _executorState = YACS::FINISHED;
273 sendEvent("executor");
277 _executorState = YACS::INITIALISED;
278 sendEvent("executor");
280 if (debug > 1) _displayDot(graph);
282 vector<Task *>::iterator iter;
287 _executorState = YACS::RUNNING;
288 sendEvent("executor");
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 numberAllTasks=_numberOfRunningTasks+_tasks.size();
299 graph->selectRunnableTasks(_tasks);
300 FilterTasksConsideringContainers(_tasks);
301 } // --- End of critical section
302 if (debug > 2) _displayDot(graph);
303 if (_executorState == YACS::RUNNING)
305 if (checkBreakPoints()) break; // end of thread requested, OK to exit at once;
306 if (debug > 0) _displayDot(graph);
309 loadParallelTasks(_tasks,this);
310 if (debug > 1) _displayDot(graph);
315 if (debug > 1) _displayDot(graph);
316 { // --- Critical section
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();
323 DEBTRACE("_numberOfRunningTasks: " << _numberOfRunningTasks);
324 DEBTRACE("_numberOfEndedTasks: " << _numberOfEndedTasks);
325 DEBTRACE("_toContinue: " << _toContinue);
326 if(_toContinue && numberAllTasks==0)
328 //Problem : no running tasks and no task to launch ??
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
333 if(problemCount > 25)
335 // Too much problems encountered : stop execution
342 _executorState = YACS::FINISHED;
343 sendEvent("executor");
344 _condForPilot.notify_all();
346 } // --- End of critical section
347 if (debug > 0) _displayDot(graph);
348 DEBTRACE("_toContinue: " << _toContinue);
351 DEBTRACE("End of main Loop");
353 { // --- Critical section
354 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
355 if ( _toContinue) // --- break while(): request to stop detected on checkBreakPoints()
357 DEBTRACE("stop requested: End soon");
358 _executorState = YACS::STOPPED;
360 sendEvent("executor");
362 } // --- End of critical section
363 if ( _dumpOnErrorRequested && _errorDetected)
365 saveState(_dumpErrorFile);
368 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForTrace);
371 DEBTRACE("End of RunB thread");
374 YACS::ExecutionMode Executor::getCurrentExecMode()
376 _isRunningunderExternalControl=true;
381 YACS::ExecutorState Executor::getExecutorState()
383 _isRunningunderExternalControl=true;
384 return _executorState;
388 bool Executor::isNotFinished()
390 _isRunningunderExternalControl=true;
394 //! ask to stop execution on the first node found in error
396 * \param dumpRequested produce a state dump when an error is found
397 * \param xmlFile name of file used for state dump
400 void Executor::setStopOnError(bool dumpRequested, std::string xmlFile)
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
413 //! ask to do not stop execution on nodes found in error
417 void Executor::unsetStopOnError()
419 { // --- Critical section
420 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
421 _stopOnErrorRequested=false;
422 } // --- End of critical section
425 //! Dynamically set the current mode of execution
427 * The mode can be Continue, step by step, or stop before execution of a node
428 * defined in a list of breakpoints.
431 void Executor::setExecMode(YACS::ExecutionMode mode)
433 DEBTRACE("Executor::setExecMode(YACS::ExecutionMode mode) " << mode);
434 { // --- Critical section
435 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
436 _isRunningunderExternalControl=true;
438 } // --- End of critical section
441 //! wake up executor when in pause
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
449 bool Executor::resumeCurrentBreakPoint()
451 DEBTRACE("Executor::resumeCurrentBreakPoint()");
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)
460 case YACS::WAITINGTASKS:
463 _condForStepByStep.notify_all();
464 _executorState = YACS::RUNNING;
465 sendEvent("executor");
467 //if (_dumpOnErrorRequested && _errorDetected) doDump =true;
473 //if (_dumpOnErrorRequested && _errorDetected) doDump =true;
474 DEBTRACE("Graph Execution finished or stopped !");
479 // debug: no easy way to verify if main loop is acutally waiting on condition
483 //if (doDump) saveState(_dumpErrorFile);
484 } // --- End of critical section
489 //! define a list of nodes names as breakpoints in the graph
492 void Executor::setListOfBreakPoints(std::list<std::string> listOfBreakPoints)
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
503 //! Get the list of tasks to load, to define a subset to execute in step by step mode
505 * If the executor is not in mode YACS::WAITINGTASKS nor YACS::PAUSED, the list is empty.
506 * Use Executor::waitPause to wait.
508 std::list<std::string> Executor::getTasksToLoad()
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)
518 case YACS::WAITINGTASKS:
521 listOfNodesToLoad = _listOfTasksToLoad;
524 case YACS::NOTYETINITIALIZED:
525 case YACS::INITIALISED:
534 } // --- End of critical section
535 return listOfNodesToLoad;
539 //! Define a subset of task to execute in step by step mode
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.
546 bool Executor::setStepsToExecute(std::list<std::string> listToExecute)
548 DEBTRACE("Executor::setStepsToExecute(std::list<std::string> listToExecute)");
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)
557 case YACS::WAITINGTASKS:
560 for (iter=_tasksSave.begin(); iter!=_tasksSave.end(); iter++)
562 string readyNode = _mainSched->getTaskName(*iter);
563 if (find(listToExecute.begin(), listToExecute.end(), readyNode)
564 != listToExecute.end())
566 restrictedTasks.push_back(*iter);
567 DEBTRACE("node to execute " << readyNode);
571 for (iter=restrictedTasks.begin(); iter!=restrictedTasks.end(); iter++)
573 _tasks.push_back(*iter);
577 case YACS::NOTYETINITIALIZED:
578 case YACS::INITIALISED:
587 } // --- End of critical section
590 for (iter=restrictedTasks.begin(); iter!=restrictedTasks.end(); iter++)
592 _tasks.push_back(*iter);
594 for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
596 string readyNode = _mainSched->getTaskName(*iter);
597 DEBTRACE("selected node to execute " << readyNode);
603 //! suspend pilot execution until Executor is in pause or waiting tasks completion mode.
605 * Do nothing if execution is finished or in pause.
606 * Wait first step if Executor is running or in initialization.
609 void Executor::waitPause()
611 DEBTRACE("Executor::waitPause()" << _executorState);
612 { // --- Critical section
613 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
614 _isRunningunderExternalControl=true;
615 switch (_executorState)
620 case YACS::WAITINGTASKS:
625 case YACS::NOTYETINITIALIZED:
626 case YACS::INITIALISED:
629 _condForPilot.wait(_mutexForSchedulerUpdate); // wait until executor is PAUSED or WAITINGTASKS
633 } // --- End of critical section
637 //! stops the execution as soon as possible
639 void Executor::stopExecution()
641 setExecMode(YACS::STEPBYSTEP);
644 resumeCurrentBreakPoint();
647 //! save the current state of execution in an xml file
649 bool Executor::saveState(const std::string& xmlFile)
651 DEBTRACE("Executor::saveState() in " << xmlFile);
652 YACS::ENGINE::VisitorSaveState vst(_root);
653 vst.openFileDump(xmlFile.c_str());
659 //! not yet implemented
661 bool Executor::loadState()
663 DEBTRACE("Executor::loadState()");
664 _isRunningunderExternalControl=true;
669 static int isfile(const char *filename)
672 if (stat(filename, &buf) != 0)
674 if (!S_ISREG(buf.st_mode))
679 //! Display the graph state as a dot display, public method
681 void Executor::displayDot(Scheduler *graph)
683 _isRunningunderExternalControl=true;
687 //! Display the graph state as a dot display
689 * \param graph : the node to display
692 void Executor::_displayDot(Scheduler *graph)
694 std::ofstream g("titi");
695 ((ComposedNode*)graph)->writeDot(g);
697 const char displayScript[]="display.sh";
698 if(isfile(displayScript))
699 system("sh display.sh");
701 system("dot -Tpng titi|display -delay 5");
704 //! Wait reactivation in modes Step By step or with BreakPoints
706 * Check mode of execution (set by main thread):
707 * - YACS::CONTINUE : the graph execution continues.
708 * - YACS::STEPBYSTEP : wait on condition (pilot thread, Executor::resumeCurrentBreakPoint)
709 * - YACS::STOPBEFORENODES : if there are ready nodes in a list of breakpoints,
710 * wait on condition (pilot thread, Executor::resumeCurrentBreakPoint)
711 * else continue the graph execution.
712 * \return true if end of executor thread is requested
715 bool Executor::checkBreakPoints()
717 DEBTRACE("Executor::checkBreakPoints()");
718 vector<Task *>::iterator iter;
719 bool endRequested = false;
727 case YACS::STOPBEFORENODES:
730 { // --- Critical section
731 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
733 for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
735 string nodeToLoad = _mainSched->getTaskName(*iter);
736 if (find(_listOfBreakPoints.begin(), _listOfBreakPoints.end(), nodeToLoad)
737 != _listOfBreakPoints.end())
745 _listOfTasksToLoad.clear();
746 for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
748 string nodeToLoad = _mainSched->getTaskName(*iter);
749 _listOfTasksToLoad.push_back(nodeToLoad);
751 if (getNbOfThreads())
752 _executorState = YACS::WAITINGTASKS; // will be paused after completion of running tasks
754 _executorState = YACS::PAUSED;
755 sendEvent("executor");
756 _condForPilot.notify_all();
758 if (stop && !_isOKToEnd) waitResume(); // wait until pilot calls resumeCurrentBreakPoint(), mutex released during wait
759 if (_isOKToEnd) endRequested = true;
760 } // --- End of critical section
761 if (stop) DEBTRACE("wake up from waitResume");
765 case YACS::STEPBYSTEP:
767 { // --- Critical section
768 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
770 _listOfTasksToLoad.clear();
771 for (iter=_tasks.begin(); iter!=_tasks.end(); iter++)
773 string nodeToLoad = _mainSched->getTaskName(*iter);
774 _listOfTasksToLoad.push_back(nodeToLoad);
776 if (getNbOfThreads())
777 _executorState = YACS::WAITINGTASKS; // will be paused after completion of running tasks
779 _executorState = YACS::PAUSED;
780 sendEvent("executor");
781 _condForPilot.notify_all();
783 waitResume(); // wait until pilot calls resumeCurrentBreakPoint(), mutex released during wait
784 // or, if no pilot, wait until no more running tasks (stop on error)
785 if (_isOKToEnd) endRequested = true;
786 } // --- End of critical section
787 DEBTRACE("wake up from waitResume");
791 DEBTRACE("endRequested: " << endRequested);
796 //! in modes Step By step or with BreakPoint, wait until pilot resumes the execution
798 * With the condition Mutex, the mutex is released atomically during the wait.
799 * Pilot calls Executor::resumeCurrentBreakPoint to resume execution.
800 * Must be called while mutex is locked.
803 void Executor::waitResume()
805 DEBTRACE("Executor::waitResume()");
806 _condForStepByStep.wait(_mutexForSchedulerUpdate); // wait until pilot calls resumeCurrentBreakPoint()
811 //! Perform loading of a Task.
813 * \param task : Task to load
816 void Executor::loadTask(Task *task, const Executor *execInst)
818 DEBTRACE("Executor::loadTask(Task *task)");
819 if(task->getState() != YACS::TOLOAD)
821 traceExec(task, "state:TOLOAD", ComputePlacement(task));
823 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
824 _mainSched->notifyFrom(task,YACS::START,execInst);
825 }//End of critical section
828 traceExec(task, "load", ComputePlacement(task));
830 traceExec(task, "initService", ComputePlacement(task));
835 std::cerr << ex.what() << std::endl;
837 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
839 _mainSched->notifyFrom(task,YACS::ABORT,execInst);
840 traceExec(task, "state:"+Node::getStateName(task->getState()), ComputePlacement(task));
841 }//End of critical section
845 std::cerr << "Load failed" << std::endl;
847 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
849 _mainSched->notifyFrom(task,YACS::ABORT,execInst);
850 traceExec(task, "state:"+Node::getStateName(task->getState()), ComputePlacement(task));
851 }//End of critical section
862 void Executor::loadTasks(const std::vector<Task *>& tasks, const Executor *execInst)
864 for(std::vector<Task *>::const_iterator iter = _tasks.begin(); iter != _tasks.end(); iter++)
865 loadTask(*iter,execInst);
868 void Executor::loadParallelTasks(const std::vector<Task *>& tasks, const Executor *execInst)
870 std::vector<Thread> ths(tasks.size());
871 std::size_t ithread(0);
872 for(std::vector<Task *>::const_iterator iter = _tasks.begin(); iter != _tasks.end(); iter++, ithread++)
874 DEBTRACE("Executor::loadParallelTasks(Task *task)");
875 struct threadargs *args(new threadargs);
876 args->task = (*iter);
877 args->sched = _mainSched;
878 args->execInst = this;
879 ths[ithread].go(functionForTaskLoad, args, _threadStackSize);
881 for(ithread=0;ithread<tasks.size();ithread++)
885 //! Execute a list of tasks possibly connected through datastream links
887 * \param tasks : a list of tasks to execute
890 void Executor::launchTasks(const std::vector<Task *>& tasks)
892 //First phase, make datastream connections
893 for(vector<Task *>::const_iterator iter=tasks.begin();iter!=tasks.end();iter++)
895 YACS::StatesForNode state=(*iter)->getState();
896 if(state != YACS::TOLOAD && state != YACS::TORECONNECT)continue;
899 (*iter)->connectService();
900 traceExec(*iter, "connectService",ComputePlacement(*iter));
902 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
903 (*iter)->connected();
904 }//End of critical section
908 std::cerr << ex.what() << std::endl;
911 (*iter)->disconnectService();
912 traceExec(*iter, "disconnectService",ComputePlacement(*iter));
916 // Disconnect has failed
917 traceExec(*iter, "disconnectService failed, ABORT",ComputePlacement(*iter));
920 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
922 _mainSched->notifyFrom(*iter,YACS::ABORT,this);
923 }//End of critical section
927 std::cerr << "Problem in connectService" << std::endl;
930 (*iter)->disconnectService();
931 traceExec(*iter, "disconnectService",ComputePlacement(*iter));
935 // Disconnect has failed
936 traceExec(*iter, "disconnectService failed, ABORT",ComputePlacement(*iter));
939 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
941 _mainSched->notifyFrom(*iter,YACS::ABORT,this);
942 }//End of critical section
944 if((*iter)->getState() == YACS::ERROR)
946 //try to put all coupled tasks in error
947 std::set<Task*> coupledSet;
948 (*iter)->getCoupledTasks(coupledSet);
949 for (std::set<Task*>::iterator it = coupledSet.begin(); it != coupledSet.end(); ++it)
952 if(t == *iter)continue;
953 if(t->getState() == YACS::ERROR)continue;
956 t->disconnectService();
957 traceExec(t, "disconnectService",ComputePlacement(*iter));
961 // Disconnect has failed
962 traceExec(t, "disconnectService failed, ABORT",ComputePlacement(*iter));
965 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
967 _mainSched->notifyFrom(t,YACS::ABORT,this);
968 }//End of critical section
969 traceExec(t, "state:"+Node::getStateName(t->getState()),ComputePlacement(*iter));
972 traceExec(*iter, "state:"+Node::getStateName((*iter)->getState()),ComputePlacement(*iter));
975 //Second phase, execute each task in a thread
976 for(vector<Task *>::const_iterator iter=tasks.begin();iter!=tasks.end();iter++)
982 //! Execute a Task in a thread
984 * \param task : Task to execute
986 * Calls Scheduler::notifyFrom of main node (_mainSched) to notify start
988 * Calls Executor::functionForTaskExecution in Thread
991 void Executor::launchTask(Task *task)
993 DEBTRACE("Executor::launchTask(Task *task)");
994 struct threadargs *args;
995 if(task->getState() != YACS::TOACTIVATE)return;
997 DEBTRACE("before _semForMaxThreads.wait " << _semThreadCnt);
998 if(_semThreadCnt == 0)
1000 // --- Critical section
1001 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1002 //check if we have enough threads to run
1003 std::set<Task*> tmpSet=_runningTasks;
1004 std::set<Task*>::iterator it = tmpSet.begin();
1005 std::string status="running";
1006 std::set<Task*> coupledSet;
1007 while( it != tmpSet.end() )
1011 tt->getCoupledTasks(coupledSet);
1013 for (std::set<Task*>::iterator iter = coupledSet.begin(); iter != coupledSet.end(); ++iter)
1015 if((*iter)->getState() == YACS::TOACTIVATE)status="toactivate";
1016 tmpSet.erase(*iter);
1018 if(status=="running")break;
1019 it = tmpSet.begin();
1022 if(status=="toactivate")
1024 std::cerr << "WARNING: maybe you need more threads to run your schema (current value="<< _maxThreads << ")" << std::endl;
1025 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;
1027 // --- End of critical section
1030 _semForMaxThreads.wait();
1033 args= new threadargs;
1035 args->sched = _mainSched;
1036 args->execInst = this;
1038 traceExec(task, "launch",ComputePlacement(task));
1040 { // --- Critical section
1041 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1042 _numberOfRunningTasks++;
1043 _runningTasks.insert(task);
1044 task->begin(); //change state to ACTIVATED
1045 } // --- End of critical section
1046 Thread(functionForTaskExecution, args, _threadStackSize);
1049 //! wait until a running task ends
1051 void Executor::sleepWhileNoEventsFromAnyRunningTask()
1053 DEBTRACE("Executor::sleepWhileNoEventsFromAnyRunningTask()");
1054 // _semForNewTasksToPerform.wait(); //----utiliser pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
1055 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForSchedulerUpdate);
1056 if (_numberOfRunningTasks > 0 && _numberOfEndedTasks==0)
1058 _isWaitingEventsFromRunningTasks = true;
1059 _condForNewTasksToPerform.wait(_mutexForSchedulerUpdate); // mutex released during wait
1061 _numberOfEndedTasks=0;
1067 void Executor::notifyEndOfThread(YACS::BASES::Thread *thread)
1069 /*_mutexForNbOfConcurrentThreads.lock();
1070 _groupOfAllThreadsCreated.remove(thread);
1072 _mutexForNbOfConcurrentThreads.unlock();*/
1076 //! must be used protected by _mutexForSchedulerUpdate!
1078 void Executor::wakeUp()
1080 DEBTRACE("Executor::wakeUp() " << _isWaitingEventsFromRunningTasks);
1081 if (_isWaitingEventsFromRunningTasks)
1083 _isWaitingEventsFromRunningTasks = false;
1084 _condForNewTasksToPerform.notify_all();
1087 _numberOfEndedTasks++;
1090 //! number of running tasks
1092 int Executor::getNbOfThreads()
1095 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForNbOfConcurrentThreads);
1096 _isRunningunderExternalControl=true;
1097 ret = _groupOfAllThreadsCreated.size();
1102 * This thread is NOT supposed to be detached !
1104 void *Executor::functionForTaskLoad(void *arg)
1106 DEBTRACE("Executor::functionForTaskLoad(void *arg)");
1107 struct threadargs *args = (struct threadargs *) arg;
1108 Task *task=args->task;
1109 Scheduler *sched=args->sched;
1110 Executor *execInst=args->execInst;
1112 execInst->loadTask(task,execInst);// no throw of this method - all throw are catched !
1116 //! Function to perform execution of a task in a thread
1118 * \param arg : 3 elements (a Task, a Scheduler, an Executor)
1120 * Calls Task::execute
1122 * Calls Task::finished when the task is finished
1124 * Calls (notify with event YACS::FINISH) Scheduler::notifyFrom when the task is finished
1126 * Calls Executor::wakeUp and Executor::notifyEndOfThread
1129 void *Executor::functionForTaskExecution(void *arg)
1131 DEBTRACE("Executor::functionForTaskExecution(void *arg)");
1133 struct threadargs *args = (struct threadargs *) arg;
1134 Task *task=args->task;
1135 Scheduler *sched=args->sched;
1136 Executor *execInst=args->execInst;
1138 execInst->traceExec(task, "state:"+Node::getStateName(task->getState()),ComputePlacement(task));
1144 YACS::Event ev=YACS::FINISH;
1147 execInst->traceExec(task, "start execution",ComputePlacement(task));
1149 execInst->traceExec(task, "end execution OK",ComputePlacement(task));
1151 catch(Exception& ex)
1153 std::cerr << "YACS Exception during execute" << std::endl;
1154 std::cerr << ex.what() << std::endl;
1156 string message = "end execution ABORT, ";
1157 message += ex.what();
1158 execInst->traceExec(task, message,ComputePlacement(task));
1162 // Execution has failed
1163 std::cerr << "Execution has failed: unknown reason" << std::endl;
1165 execInst->traceExec(task, "end execution ABORT, unknown reason",ComputePlacement(task));
1171 DEBTRACE("task->disconnectService()");
1172 task->disconnectService();
1173 execInst->traceExec(task, "disconnectService",ComputePlacement(task));
1177 // Disconnect has failed
1178 std::cerr << "disconnect has failed" << std::endl;
1180 execInst->traceExec(task, "disconnectService failed, ABORT",ComputePlacement(task));
1184 std::string placement(ComputePlacement(task));
1186 // container management for HomogeneousPoolOfContainer
1188 HomogeneousPoolContainer *contC(dynamic_cast<HomogeneousPoolContainer *>(task->getContainer()));
1191 YACS::BASES::AutoLocker<Container> alckCont(contC);
1192 contC->release(task);
1195 DEBTRACE("End task->execute()");
1196 { // --- Critical section
1197 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&execInst->_mutexForSchedulerUpdate);
1200 if (ev == YACS::FINISH) task->finished();
1201 if (ev == YACS::ABORT)
1203 execInst->_errorDetected = true;
1204 if (execInst->_stopOnErrorRequested)
1206 execInst->_execMode = YACS::STEPBYSTEP;
1207 execInst->_isOKToEnd = true;
1211 execInst->traceExec(task, "state:"+Node::getStateName(task->getState()),placement);
1212 sched->notifyFrom(task,ev,execInst);
1214 catch(Exception& ex)
1216 //notify has failed : it is supposed to have set state
1217 //so no need to do anything
1218 std::cerr << "Error during notification" << std::endl;
1219 std::cerr << ex.what() << std::endl;
1223 //notify has failed : it is supposed to have set state
1224 //so no need to do anything
1225 std::cerr << "Notification failed" << std::endl;
1227 execInst->_numberOfRunningTasks--;
1228 execInst->_runningTasks.erase(task);
1229 DEBTRACE("_numberOfRunningTasks: " << execInst->_numberOfRunningTasks
1230 << " _execMode: " << execInst->_execMode
1231 << " _executorState: " << execInst->_executorState);
1232 if ((execInst->_numberOfRunningTasks == 0) && (execInst->_execMode != YACS::CONTINUE)) // no more running tasks
1234 if (execInst->_executorState == YACS::WAITINGTASKS)
1236 execInst->_executorState = YACS::PAUSED;
1237 execInst->sendEvent("executor");
1238 execInst->_condForPilot.notify_all();
1239 if (execInst->_errorDetected &&
1240 execInst->_stopOnErrorRequested &&
1241 !execInst->_isRunningunderExternalControl)
1242 execInst->_condForStepByStep.notify_all(); // exec thread may be on waitResume
1245 DEBTRACE("before _semForMaxThreads.post " << execInst->_semThreadCnt);
1246 execInst->_semForMaxThreads.post();
1247 execInst->_semThreadCnt += 1;
1248 DEBTRACE("after _semForMaxThreads.post " << execInst->_semThreadCnt);
1249 if (execInst->_executorState != YACS::PAUSED) execInst->wakeUp();
1251 } // --- End of critical section (change state)
1253 //execInst->notifyEndOfThread(0);
1258 void Executor::traceExec(Task *task, const std::string& message, const std::string& placement)
1260 string nodeName = _mainSched->getTaskName(task);
1261 Container *cont = task->getContainer();
1262 string containerName = "---";
1264 containerName = cont->getName();
1267 DWORD now = timeGetTime();
1268 double elapse = (now - _start)/1000.0;
1271 gettimeofday(&now, NULL);
1272 double elapse = (now.tv_sec - _start.tv_sec) + double(now.tv_usec - _start.tv_usec)/1000000.0;
1275 YACS::BASES::AutoLocker<YACS::BASES::Mutex> alck(&_mutexForTrace);
1276 _trace << elapse << " " << containerName << " " << placement << " " << nodeName << " " << message << endl;
1281 //! emit notification to all observers registered with the dispatcher
1283 * The dispatcher is unique and can be obtained by getDispatcher()
1285 void Executor::sendEvent(const std::string& event)
1287 Dispatcher* disp=Dispatcher::getDispatcher();
1290 disp->dispatch(_root,event);
1294 * This method takes in input a list of tasks and selects from that lists a part of it considering only the containers.
1295 * If tasks have no container instance subclass of HomogeneousPoolContainer this method will let the \a tsks untouched.
1297 * \param [in,out] tsks - list of tasks to be
1299 void Executor::FilterTasksConsideringContainers(std::vector<Task *>& tsks)
1301 std::map<HomogeneousPoolContainer *, std::vector<Task *> > m;
1302 for(std::vector<Task *>::const_iterator it=tsks.begin();it!=tsks.end();it++)
1307 Container *cont(cur->getContainer());
1310 m[(HomogeneousPoolContainer *)NULL].push_back(cur);
1313 HomogeneousPoolContainer *contC(dynamic_cast<HomogeneousPoolContainer *>(cont));
1316 m[(HomogeneousPoolContainer *)NULL].push_back(cur);
1319 m[contC].push_back(cur);
1322 std::vector<Task *> ret;
1323 for(std::map<HomogeneousPoolContainer *, std::vector<Task *> >::const_iterator it=m.begin();it!=m.end();it++)
1325 HomogeneousPoolContainer *curhpc((*it).first);
1326 const std::vector<Task *>& curtsks((*it).second);
1329 ret.insert(ret.end(),curtsks.begin(),curtsks.end());
1333 // start of critical section for container curhpc
1334 YACS::BASES::AutoLocker<Container> alckForCont(curhpc);
1335 std::vector<const Task *> vecOfTaskSharingSameHPContToBeRunSimutaneously;
1336 std::size_t sz(curhpc->getNumberOfFreePlace());
1337 std::vector<Task *>::const_iterator it2(curtsks.begin());
1338 for(std::size_t i=0;i<sz && it2!=curtsks.end();i++,it2++)
1340 vecOfTaskSharingSameHPContToBeRunSimutaneously.push_back(*it2);
1341 ret.push_back(*it2);
1343 curhpc->allocateFor(vecOfTaskSharingSameHPContToBeRunSimutaneously);
1344 //end of critical section
1351 std::string Executor::ComputePlacement(Task *zeTask)
1353 std::string placement("---");
1356 if(zeTask->getContainer())
1357 placement=zeTask->getContainer()->getFullPlacementId(zeTask);