gdetector_example.cc File Reference

Example: build detector geometry, load digitization routines, and run a small multi-threaded digitization loop. More...

#include "gdetectorConstruction.h"
#include "gdetector_options.h"
#include "glogger.h"
#include "event/gEventDataCollection.h"
#include "gdynamicdigitizationConventions.h"
#include "gthreads.h"
#include "G4RunManagerFactory.hh"
#include "QBBC.hh"
#include <atomic>
#include <vector>
#include <memory>

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Functions
auto	run_simulation_in_threads (int nevents, int nthreads, const std::shared_ptr< GOptions > &gopts, const std::shared_ptr< GLogger > &log, const std::shared_ptr< const GDetectorConstruction > &gdetector) -> std::vector< std::shared_ptr< GEventDataCollection > >
	Runs a digitization loop across multiple worker threads and collects event data.
int	main (int argc, char *argv[])
	Example program entry point.

Detailed Description

This example demonstrates:

• Constructing aggregated module options via gdetector::defineOptions()
• Creating GDetectorConstruction and reloading geometry from systems
• Using digitization routines to load constants/translation tables and process hits
• Collecting per-event data from multiple worker threads

Definition in file gdetector_example.cc.

Function Documentation

main()

int main	(	int	argc,
		char *	argv[] )

This program:

• Builds a GOptions instance using gdetector::defineOptions()
• Creates a module logger using the gdetector logger name
• Configures a Geant4 run manager and a reference physics list
• Constructs GDetectorConstruction and reloads geometry from system definitions
• Runs a small multi-threaded digitization loop

Parameters

argc	Standard program argument count.
argv	Standard program argument vector.

Returns

Process exit code.

Definition at line 170 of file gdetector_example.cc.

run_simulation_in_threads()

auto run_simulation_in_threads	(	int	nevents,
		int	nthreads,
		const std::shared_ptr< GOptions > &	gopts,
		const std::shared_ptr< GLogger > &	log,
		const std::shared_ptr< const GDetectorConstruction > &	gdetector ) -> std::vector<std::shared_ptr<GEventDataCollection>>

Each worker thread:

• Claims the next event number via an atomic counter
• Instantiates an event header and event data container
• Retrieves the digitization routine for the chosen sensitive detector name
• Loads constants and translation tables for the chosen (run, variation)
• Creates a fixed number of synthetic hits and digitizes them
• Optionally logs a summary of digitized hit counts

Parameters

nevents	Total number of events to process.
nthreads	Number of worker threads to run.
gopts	Shared options instance used to configure created objects.
log	Shared logger instance used for informational and debug output.
gdetector	Detector-construction object providing digitization routines.

Returns

Vector of collected event data objects.

Note

This function demonstrates the threading pattern only; the example uses a fixed sensitive detector name ("flux") and synthetic hit generation for clarity.

Definition at line 59 of file gdetector_example.cc.