Gabriele Cosmo
29 lines
1.2 KiB
Plaintext
29 lines
1.2 KiB
Plaintext
$Id: BUG.userStackingAction,v 1.1 2002/03/05 15:22:07 gcosmo Exp $
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-------------------------------------------------------------------
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When Geant4 4.0 sees empty event, it still calls userStackingAction.
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In the function:
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G4StackManager::PopNextTrack(G4VTrajectory**newTrajectory)
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in Geant4 4.0, one has:
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145 if(userStackingAction) userStackingAction->NewStage();
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146 #ifdef G4VERBOSE
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147 if( verboseLevel > 0 ) G4cout << " " << GetNUrgentTrack()
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148 << " urgent tracks and " << GetNWaitingTrack()
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149 << " waiting tracks." << G4endl;
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150 #endif
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151 if( ( GetNUrgentTrack()==0 ) && ( GetNWaitingTrack()==0 ) ) return 0;
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It seems to me that the call, `return 0' (line 151), should occur before
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the call to `NewStage()' (line 145). If there are no tracks to
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be stacked (neither GetNUrgentTrack() nor GetNWaitingTrack()),
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then there is no new stage. So, it's a mistake to call
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userStackingAction->NewStage().
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This affects my parallelization of Geant4, in which I need to purposely
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create a trivial event on the master, and call
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G4EventManager()::ProcessOneEvent() on it to initialize the event on the
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master. I am doing this in order to copy the hits from the slave into
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an event on the master.
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