Singleton.h

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// this is for emacs file handling -*- mode: c++; indent-tabs-mode: nil -*-

// -- BEGIN LICENSE BLOCK ----------------------------------------------
// This file is part of FZIs ic_workspace.
//
// This program is free software licensed under the LGPL
// (GNU LESSER GENERAL PUBLIC LICENSE Version 3).
// You can find a copy of this license in LICENSE folder in the top
// directory of the source code.
//
// © Copyright 2016 FZI Forschungszentrum Informatik, Karlsruhe, Germany
//
// -- END LICENSE BLOCK ------------------------------------------------

//----------------------------------------------------------------------
//----------------------------------------------------------------------
#ifndef ICL_CORE_SINGLETON_H_INCLUDED
#define ICL_CORE_SINGLETON_H_INCLUDED

#include "icl_core/SingletonCreationPolicies.h"
#include "icl_core/SingletonLifetimePolicies.h"
#include "icl_core/SingletonThreadingModels.h"

namespace icl_core {

template
<class T,
 template <class> class TCreationPolicy = SCPCreateUsingNew,
 template <class> class TLifetimePolicy = SLPDefaultLifetime,
 template <class> class TThreadingModel = STMSingleThreaded>
class Singleton
{
public:
  static T& instance();

private:
  Singleton();
  ~Singleton();
  Singleton(const Singleton&);
  Singleton& operator = (const Singleton&);

  static void destroySingleton();
  static T *m_instance;
  static bool m_destroyed;
  static typename TThreadingModel<T>::Lock m_lock;
};

}

#endif