LoopGuard.h

// -*- C++ -*-
//
// LoopGuard.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2019 Leif Lonnblad
//
// ThePEG is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef ThePEG_LoopGuard_H
#define ThePEG_LoopGuard_H
// This is the declaration of the LoopGuard class.

namespace ThePEG {

template <typename ExceptionT = Exception,
          typename MessageT = const char *>
class LoopGuard {

public:

  LoopGuard(const MessageT & mess, long maxc = 1000000 )
    : count(0), maxCount(maxc), message(mess) {}

  void operator()()
  {
    if ( ++count > maxCount ) throw ExceptionT(message);
  }

private:

  long count;

  long maxCount;

  const MessageT & message;

private:

  LoopGuard();

  LoopGuard(const LoopGuard &);

};

template <typename ExceptionT>
class LoopGuard<ExceptionT,void> {

public:

  LoopGuard(long maxc = 1000000 )
    : count(0), maxCount(maxc) {}

  void operator()()
  {
    if ( ++count > maxCount ) throw ExceptionT();
  }

private:

  long count;

  long maxCount;

private:

  LoopGuard();

  LoopGuard(const LoopGuard &);

};

}

#endif /* ThePEG_LoopGuard_H */