| Geant4 Cross Reference |
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25 //
26 // Author: Jonathan Madsen (May 28st 2020)
27 //
28 // class description:
29 //
30 // This class is used for multi-threaded Geant4.
31 // It encapsulates the mechanism of starting/stopping threads.
32
33 #ifndef G4UserTaskThreadInitialization_hh
34 #define G4UserTaskThreadInitialization_hh
35
36 //class G4VUserPrimaryGeneratorAction;
37 //class G4UserRunAction;
38 //class G4UserEventAction;
39 //class G4UserStackingAction;
40 //class G4UserTrackingAction;
41 //class G4UserSteppingAction;
42
43 class G4WorkerThread;
44 class G4WorkerTaskRunManager;
45
46 #include "G4Threading.hh"
47 #include "G4UserWorkerThreadInitialization.hh"
48 #include "Randomize.hh"
49
50 class G4UserTaskThreadInitialization : public G4UserWorkerThreadInitialization
51 {
52 public: // with description
53 G4UserTaskThreadInitialization() = default;
54 ~G4UserTaskThreadInitialization() override = default;
55
56 // Called by the kernel to create a new thread/worker
57 // and start work.
58 // Usere should not re-implement this function (in derived class), except only
59 // if he/she wants to verwrite the default threading model (see StartThread
60 // function)
61 G4Thread* CreateAndStartWorker(G4WorkerThread* workerThreadContext) override;
62
63 // Called by worker threads to set the Random Number Generator Engine
64 // The default implementation "clones" the engine from the master thread
65 // User needs to re-implement this method if using a non-standard
66 // RNG Engine (i.e. a different one w.r.t. the one provided in the CLHEP
67 // version supported by G4.
68 // Important: this method is called by all threads at the same time
69 // if is user responsibilitiy to make it thread-safe
70 void SetupRNGEngine(const CLHEP::HepRandomEngine* aRNGEngine) const override;
71
72 // Called by the kernel when threads need to be terminated. Implements logic
73 // of joining the aThread. Calling thread will wait for aThread to end. Usere
74 // should not re-implement this function (in derived class), except only if
75 // he/she wants to verwrite the default threading model (see StartThread
76 // function)
77 void JoinWorker(G4Thread* aThread) override;
78
79 // Called by StartThread function to create a run-manager implementing worker
80 // behvior. User should re-implemtn this function in derived class to
81 // instantiate his/her user-defined WorkerRunManager. By default this method
82 // instantiates G4WorkerTaskRunManager object.
83 G4WorkerRunManager* CreateWorkerRunManager() const override;
84 };
85
86 #endif // G4UserTaskThreadInitialization_hh
87