SoCache.h

#ifndef COIN_SOCACHE_H
#define COIN_SOCACHE_H
 
/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
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 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
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\**************************************************************************/
 
class SoState;
class SoElement;
class SoCacheP;
 
#include <Inventor/SbBasic.h>
#include <cstddef> // for NULL
 
class COIN_DLL_API SoCache {
public:
  SoCache(SoState * const state);
 
  void ref(void);
  void unref(SoState * state = NULL);
 
  void addElement(const SoElement * const elem);
 
  virtual void addCacheDependency(const SoState * state,
                                  SoCache * cache);
  virtual SbBool isValid(const SoState * state) const;
  const SoElement * getInvalidElement(const SoState * const state) const;
  void invalidate(void);
 
protected:
  virtual void destroy(SoState * state);
  virtual ~SoCache();
 
private:
  SoCacheP * pimpl;
};
 
#endif // !COIN_SOCACHE_H