#include <iostream>

#include "TBranch.h"
#include "TTree.h"
#include "TFile.h"

struct evt_data_t {
	ULong_t		timestamp;
	UInt_t		evcounter;
	UShort_t	samples[1024];
};

void FillTree(const char *fileName = "test.root") {
	evt_data_t	out_data = {0, 0, {}};
	TFile output_file(fileName,"RECREATE");
   output_file.cd();
   
	TTree *output_tree = new TTree("datatree","Tree di esempio");
	TBranch *branch = output_tree->Branch("evbranch", &out_data.timestamp, "time/l:counter/i:samples[1024]/s");
	for (int i=0; i<2000000; i++)
		branch->Fill();

	output_tree->Write();
}

void testFill()
{
   while (true) {
      std::cout<<"start\n";
      FillTree();
      std::cout<<"done.\n";
   }
}