Singleton.h

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/*
Copyright 2007-2025. Algoryx Simulation AB.
 
All AGX source code, intellectual property, documentation, sample code,
tutorials, scene files and technical white papers, are copyrighted, proprietary
and confidential material of Algoryx Simulation AB. You may not download, read,
store, distribute, publish, copy or otherwise disseminate, use or expose this
material unless having a written signed agreement with Algoryx Simulation AB, or having been
advised so by Algoryx Simulation AB for a time limited evaluation, or having purchased a
valid commercial license from Algoryx Simulation AB.
 
Algoryx Simulation AB disclaims all responsibilities for loss or damage caused
from using this software, unless otherwise stated in written agreements with
Algoryx Simulation AB.
*/
 
#ifndef AGX_SINGLETON_H
#define AGX_SINGLETON_H
 
#include <agx/agxCore_export.h>
#include <agx/agx.h>
#include <agx/Referenced.h>
#include <agxStream/ClassInformation.h>
 
 
namespace agx
{
 
  class AGXCORE_EXPORT Singleton
  {
    public:
 
      enum Priority {
        HIGHEST_PRIORITY = 2147483647, 
        LOWEST_PRIORITY = 10000,       
        DEFAULT_PRIORITY = 1073741824  
      };
 
      Singleton( int priority = DEFAULT_PRIORITY );
 
      virtual void shutdown() = 0;
 
      int getPriority() const;
 
      friend class SingletonManager;
 
      virtual std::string getClassName() const = 0;
 
#ifdef SWIG
# define SINGLETON_CLASSNAME_METHOD()
#else
# define SINGLETON_CLASSNAME_METHOD() \
  std::string getClassName() const override { agxStream::ClassInformation ci(AGX_FUNCTION); return ci.getClassType(); }
#endif
 
    protected:
 
      virtual ~Singleton();
 
      void _shutdown();
 
    private:
      int m_priority;
      bool m_shutdownCalled;
  };
 
  typedef ref_ptr<Singleton> SingletonRef;
 
}
 
#endif