Numerical fix (A. Rossi)

[u/mrichter/AliRoot.git] / SHUTTLE / AliShuttleTrigger.cxx

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/*
 $Log$
 Revision 1.13  2006/11/16 16:16:48  jgrosseo
 introducing strict run ordering flag
 removed giving preprocessor name to preprocessor, they have to know their name themselves ;-)

 Revision 1.12  2006/10/20 15:22:59  jgrosseo
 o) Adding time out to the execution of the preprocessors: The Shuttle forks and the parent process monitors the child
 o) Merging Collect, CollectAll, CollectNew function
 o) Removing implementation of empty copy constructors (declaration still there!)

 Revision 1.11  2006/10/02 16:38:39  jgrosseo
 update (alberto):
 fixed memory leaks
 storing of objects that failed to be stored to the grid before
 interfacing of shuttle status table in daq system

 Revision 1.10  2006/08/15 10:50:00  jgrosseo
 effc++ corrections (alberto)

 Revision 1.9  2006/08/08 14:19:29  jgrosseo
 Update to shuttle classes (Alberto)

 - Possibility to set the full object's path in the Preprocessor's and
 Shuttle's  Store functions
 - Possibility to extend the object's run validity in the same classes
 ("startValidity" and "validityInfinite" parameters)
 - Implementation of the StoreReferenceData function to store reference
 data in a dedicated CDB storage.

 Revision 1.8  2006/07/21 07:37:20  jgrosseo
 last run is stored after each run

 Revision 1.7  2006/07/20 09:54:40  jgrosseo
 introducing status management: The processing per subdetector is divided into several steps,
 after each step the status is stored on disk. If the system crashes in any of the steps the Shuttle
 can keep track of the number of failures and skips further processing after a certain threshold is
 exceeded. These thresholds can be configured in LDAP.

 Revision 1.6  2006/07/19 10:09:55  jgrosseo
 new configuration, accesst to DAQ FES (Alberto)

 Revision 1.5  2006/07/10 13:01:41  jgrosseo
 enhanced storing of last sucessfully processed run (alberto)

 Revision 1.4  2006/07/04 14:59:57  jgrosseo
 revision of AliDCSValue: Removed wrapper classes, reduced storage size per value by factor 2

 Revision 1.3  2006/06/12 09:11:16  jgrosseo
 coding conventions (Alberto)

 Revision 1.2  2006/06/06 14:26:40  jgrosseo
 o) removed files that were moved to STEER
 o) shuttle updated to follow the new interface (Alberto)

 Revision 1.1  2006/03/07 07:52:34  hristov
 New version (B.Yordanov)

 Revision 1.5  2005/11/21 09:03:48  byordano
 one more print added

 Revision 1.4  2005/11/20 10:12:37  byordano
 comments added to AliShuttleTrigger

 */


// 
// This class is to deal with DAQ LogBook and DAQ "end of run" notification.
// It has severeal two modes:
// 	1) synchronized - Collect()
// 	2) asynchronized - Run() - starts listening for DAQ "end of run"
// 		notification by DIM service.
//

#include "AliShuttleTrigger.h"

#include <TSystem.h>

#include "AliLog.h"
#include "AliShuttleConfig.h"
#include "AliShuttle.h"
#include "DATENotifier.h"

ClassImp(TerminateSignalHandler)
ClassImp(AliShuttleTrigger)

//______________________________________________________________________________________________
Bool_t TerminateSignalHandler::Notify()
{
// Sentd terminate command to the Shuttle trigger

	AliInfo("Terminate signal received ...");
	fTrigger->Terminate();

	return kTRUE;
}

//______________________________________________________________________________________________
AliShuttleTrigger::AliShuttleTrigger(const AliShuttleConfig* config,
		UInt_t timeout, Int_t retries):
	fConfig(config), fShuttle(NULL),
	fNotified(kFALSE), fTerminate(kFALSE),
	fMutex(), fCondition(&fMutex),
	fQuitSignalHandler(0),
	fInterruptSignalHandler(0)
{
	//
	// config - pointer to the AliShuttleConfig object which represents
	// the configuration
	// mainStorage - pointer to AliCDBStorage for the undelying CDBStorage
	// localStorage (local) CDB storage to be used if mainStorage is unavailable
	//

	if (!fConfig->IsValid()) AliFatal("********** !!!!! Invalid configuration !!!!! **********");
	fShuttle = new AliShuttle(config, timeout, retries);

	TerminateSignalHandler* fQuitSignalHandler = new TerminateSignalHandler(this, kSigQuit);
	TerminateSignalHandler* fInterruptSignalHandler = new TerminateSignalHandler(this, kSigInterrupt);

	gSystem->AddSignalHandler(fQuitSignalHandler);
	gSystem->AddSignalHandler(fInterruptSignalHandler);

}

//______________________________________________________________________________________________
AliShuttleTrigger::~AliShuttleTrigger() 
{
  // destructor

	gSystem->RemoveSignalHandler(fQuitSignalHandler);
	gSystem->RemoveSignalHandler(fInterruptSignalHandler);

	delete fShuttle;

  delete fQuitSignalHandler;
  fQuitSignalHandler = 0;

  delete fInterruptSignalHandler;
  fInterruptSignalHandler = 0;
}

//______________________________________________________________________________________________
Bool_t AliShuttleTrigger::Notify() {
	//
	// Trigger Collect() methods in asynchronized (listen) mode.
	// Usually called automaticly by DATENotifier on "end of run" 
	// notification event.
	//

	fMutex.Lock();

	fNotified = kTRUE;
	fCondition.Signal();

	fMutex.UnLock();

	return kTRUE;
}

//______________________________________________________________________________________________
void AliShuttleTrigger::Terminate() {
	//
	// Stop triggers listen mode and exist from Run()
	// Usually called automaticly by TerminateSignalHandler.
	//

	fTerminate = kTRUE;
	fCondition.Signal();
}

//______________________________________________________________________________________________
void AliShuttleTrigger::Run() {
	//
	// AliShuttleTrigger main loop for asynchronized (listen) mode.
	// It spawns DIM service listener and waits for DAQ "end of run"
	// notification. Calls Collect() on notification.
	//

	fTerminate = kFALSE;

	DATENotifier* notifier = new DATENotifier(this, "/DATE/LOGBOOK/UPDATE");

	Int_t nTry=0;
	
	while (1) {
	
		fMutex.Lock();

		while (!(fNotified || fTerminate)) {
			if (fCondition.TimedWaitRelative(1000*fConfig->GetTriggerWait()) == 1)
				break; // 1 = timeout
		}

		fNotified = kFALSE;
		
		fMutex.UnLock();

		if (fTerminate) {
			AliInfo("Terminated.");
			break;		
		}
		
		// TODO Check this!
		//nTry++;
		//AliInfo(Form("Received %d triggers so far", nTry));
		//if(nTry>5)
		//{
		//	AliInfo("Collect() ran more than 5 times -> Exiting!");
		//	break;
		//}
	
		Collect();
	}

	delete notifier;
}

//______________________________________________________________________________________________
Bool_t AliShuttleTrigger::Collect(Int_t run)
{
	//
	// this function creates a thread that runs the shuttle
	// then it checks if the shuttle is still running by checking the monitoring functions of the shuttle
	//

  return fShuttle->Collect(run);
}