本文整理汇总了C++中TFile::GetNextEvent方法的典型用法代码示例。如果您正苦于以下问题：C++ TFile::GetNextEvent方法的具体用法？C++ TFile::GetNextEvent怎么用？C++ TFile::GetNextEvent使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TFile的用法示例。
在下文中一共展示了TFile::GetNextEvent方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int argc, char* argv[]) {
if (argc<4) { cerr << "Usage: " << argv[0] << " <board id> <run id> <trigger start> [trigger stop=-1]" << endl; exit(0); }
const unsigned int num_channels = 32;
int board_id = atoi(argv[1]);
int run_id = atoi(argv[2]);
int trigger_start = atoi(argv[3]), trigger_stop = -1;
if (argc>4) trigger_stop = atoi(argv[4]);
string output = "output_test_sorted.root";
if (argc>5) output = argv[5];
int fNumMeasurements, fNumErrors;
int fRunId, fBurstId;
int fETTT, fTriggerNumber;
int fChannelId[MAX_MEAS];
double fLeadingEdge[MAX_MEAS], fTrailingEdge[MAX_MEAS], fToT[MAX_MEAS];
TFile* f = new TFile(output.c_str(), "recreate");
TTree* t = new TTree("tdc", "List of TDC measurements");
t->Branch("num_measurements", &fNumMeasurements, "num_measurements/I");
t->Branch("num_errors", &fNumErrors, "num_errors/I");
t->Branch("run_id", &fRunId, "run_id/I");
//t->Branch("burst_id", &fBurstId, "burst_id/I"); // need to be clever for this...
t->Branch("channel_id", fChannelId, "channel_id[num_measurements]/I");
t->Branch("leading_edge", fLeadingEdge, "leading_edge[num_measurements]/D");
t->Branch("trailing_edge", fTrailingEdge, "trailing_edge[num_measurements]/D");
t->Branch("tot", fToT, "tot[num_measurements]/D");
t->Branch("ettt", &fETTT, "ettt/I");
t->Branch("trigger_number",&fTriggerNumber,"trigger_number/I");
ostringstream search1, search2, file;
search2 << "_board" << board_id << ".dat";
DIR* dir; struct dirent* ent;
cout << "Search in directory: " << getenv("PPS_DATA_PATH") << endl; //PPS_DATA_PATH = env. var., tu set in .bashrc of operating machine
VME::TDCMeasurement m; VME::TDCEvent e;
int num_triggers = 0, num_channel_measurements[num_channels];
double has_leading_per_trigger[num_channels];
for (int sp=1; sp<10000000; sp++) { // we loop over all spills
search1.str(""); search1 << "events_" << run_id << "_" << sp << "_";
bool file_found = false; string filename;
// first we search for the proper file to open
if ((dir=opendir(getenv("PPS_DATA_PATH")))==NULL) return -1;
while ((ent=readdir(dir))!=NULL) {
if (string(ent->d_name).find(search1.str())!=string::npos and
string(ent->d_name).find(search2.str())!=string::npos) {
file_found = true;
filename = ent->d_name;
break;
}
}
closedir(dir);
if (!file_found) {
cout << "Found " << sp << " files in this run" << endl;
break;
}
for (unsigned int i=0; i<num_channels; i++) {
num_channel_measurements[i] = 0;
has_leading_per_trigger[i] = 0;
}
// then we open it
file.str(""); file << getenv("PPS_DATA_PATH") << "/" << filename;
cout << "Opening file " << file.str() << endl;
try {
FileReader f(file.str());
while (true) {
if (!f.GetNextEvent(&e)) break;
if (e.GetType()==VME::TDCEvent::GlobalHeader) {
for (unsigned int i=0; i<num_channels; i++) {
num_channel_measurements[i] = 0;
has_leading_per_trigger[i] = 0;
}
num_triggers++;
fETTT = 0;
if(num_triggers % 1000 == 0)
cout << "Triggers received: " << num_triggers << endl;
fNumMeasurements = fNumErrors = 0;
if (num_triggers>trigger_stop and trigger_stop>0) break;
else if (num_triggers<trigger_start) continue;
// cout << "GlobalHeader, trigger number " << fTriggerNumber << endl;
fTriggerNumber = num_triggers;
}
else if (e.GetType()==VME::TDCEvent::TDCMeasurement) {
unsigned int ch_id = e.GetChannelId();
if (!e.IsTrailing()) {
has_leading_per_trigger[ch_id] = e.GetTime()*25./1024.;
// cout << "\tTDCMeasurement Leading edge: channel " << ch_id << ": " << has_leading_per_trigger[ch_id] << endl;
}
else {
double trailing_time = e.GetTime()*25./1024.;
// cout << "\tTDCMeasurement Trailing edge: channel " << ch_id << ": " << trailing_time << endl;
// cout << "\tTDCMeasurement Trailing edge: channel " << ch_id << ": " << trailing_time-has_leading_per_trigger[ch_id] << endl;
if (has_leading_per_trigger[ch_id]==0.) continue;
fChannelId[fNumMeasurements] = ch_id;
fLeadingEdge[fNumMeasurements] = has_leading_per_trigger[ch_id];
fTrailingEdge[fNumMeasurements] = trailing_time;
fToT[fNumMeasurements] = fTrailingEdge[fNumMeasurements]-fLeadingEdge[fNumMeasurements];
//.........这里部分代码省略.........