Logging

1) glog를 이용한 logging 예시
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int f3(){
  print_stacktrace();
  printf("hello f3\n");
  LOG(INFO) << "Hello" << std::endl;
  std::vector<int> vec = {1, 2, 3, 4};
  int j = vec.at(20);
  return j;
}
void f2(){
  f3();
  return;
}

void f1(){
  f2();
  return;
}

void WriteToStderr(const char* data, int size) {
  //LOG(ERROR) << __pretty_function__ << ":Error..." << std::string(data,size);
  LOG(ERROR) << __func__ << ":Error..." << std::string(data,size);
}

int main(int argc, char** argv){
  std::string log_destination = "/home/geonuk/atlas/ws/test/output/log";
  google::InstallFailureSignalHandler();
  google::InstallFailureWriter(WriteToStderr);
  google::InitGoogleLogging(argv[0]);
  google::SetLogDestination(google::GLOG_INFO, log_destination.c_str() );
  f3();
  return 0;
}

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2) subtrace를 얻는법 예시

void print_trace(void) {
  void *array[10];
  char **strings;
  size_t size = backtrace(array, 10);
  backtrace_symbols_fd(array, size, STDERR_FILENO);

}

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