messenger_proxy.hpp

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// DUNE DAQ modification notice:
// This file has been modified from the original ATLAS dbe source for the DUNE DAQ project.
// Fork baseline commit: dbe-02-12-17 (2022-05-12).
// Renamed since fork: yes (from dbe/messenger_proxy.h to include/dbe/messenger_proxy.hpp).
 
/*
 * messenger_proxy.h
 *
 *  Created on: Nov 4, 2015
 *      Author: lgeorgop
 */
 
#ifndef DBE_MESSENGER_PROXY_H_
#define DBE_MESSENGER_PROXY_H_
 
#include <QMessageBox>
#include <QObject>
#include <QString>
 
namespace dbe {
namespace interface {

class messenger_proxy : public QObject
{
  Q_OBJECT
public:
  typedef std::string t_extstr;
 
  static messenger_proxy& ref();
 
  void debug(t_extstr const&, t_extstr const&);
  void info(t_extstr const&, t_extstr const&);
  void note(t_extstr const&, t_extstr const&);
  void warn(t_extstr const&, t_extstr const&);
  void error(t_extstr const&, t_extstr const&);
  void fail(t_extstr const&, t_extstr const&);
 
  /*
   * Signals defined below are used to call across the thread boundary, e.g. from an std::thread to
   * a QThread , in order to guarantee the the strings leave in the receiver thread's memory space
   * copies have to actually be passed as an argument. Otherwise, in case of context switch the
   * value may die, as it is going to be unaware of it being held from the receiver.
   */
signals:
  void signal_debug(QString, QString);
  void signal_info(QString, QString);
  void signal_note(QString, QString);
  void signal_warn(QString, QString);
  void signal_error(QString, QString);
  void signal_fail(QString, QString);
 
private:
  messenger_proxy();
  messenger_proxy(messenger_proxy const&) = delete;
  messenger_proxy operator=(messenger_proxy const&) = delete;
};
 
}
}
 
#endif /* DBE_MESSENGER_PROXY_H_ */