Method CustomLogMessage

include/dmlc/logging.h:351–354

class CustomLogMessage {
 public:
  CustomLogMessage(const char* file, int line) {
    log_stream_ << "[" << DateLogger().HumanDate() << "] " << file << ":"
                << line << ": ";
  }
  ~CustomLogMessage() {
    Log(log_stream_.str());
  }