SPS_SABRE_EventBuilder/src/evb/OrderChecker.cpp

/*
	OrderChecker.cpp
	Very simple class designed to test whether or not a root file is time ordered.
	Meant to be used with newly converted from binary data. Only for development.

	Written by G.W. McCann Oct. 2020
*/
#include "EventBuilder.h"
#include "OrderChecker.h"

OrderChecker::OrderChecker() 
{
}

OrderChecker::~OrderChecker() 
{
}

bool OrderChecker::IsOrdered(const std::string& filename)  
{
	TFile* file = TFile::Open(filename.c_str(), "READ");
	TTree* tree = (TTree*) file->Get("Data");

	uint64_t ts;
	tree->SetBranchAddress("Timestamp", &ts);
	uint64_t prevStamp = 0;

	for(Long64_t i=0; i<tree->GetEntries(); i++) 
	{
		tree->GetEntry();
		if(prevStamp >= ts) 
		{
			std::cerr<<"Bad order at entry "<<i<<" out of "<<tree->GetEntries()<<std::endl;
			return false;
		}
	}

	file->Close();
	return true;
}