Share Library (C++)

#ifndef DEFAULT_REFCOUNTER_H
#define DEFAULT_REFCOUNTER_H
 
/**
 * @file DefaultRefCounter.h
 * @brief Reference counter for shared segment
 * @author Kamil Dudka, xdudka00@gmail.com
 * @date 2007-05-15
 * @ingroup backend
*/
 
#include "sharelib.h"
 
namespace Share {
 
  /**
   * @brief Reference counter for shared segment
   * @note This class can be replaced with more efficient class with equivalet interface by changing Share::TSegmentRefCounter
   * @ingroup backend
   */
  class DefaultRefCounter/*: public AbstractRefCounter*/ {
    public:
      /**
       * @throw ShareException Library-specific exception derived from std::bad_alloc
       */
      DefaultRefCounter() throw (ShareException);
      ~DefaultRefCounter();
 
      /**
       * Client attach notification. This increase reference count.
       */
      void notifyAttach();
 
      /**
       * Client detach notification. This decrease reference count.
       */
      void notifyDetach();
 
      /**
       * @return Return current count of references.
       */
      int refCount() const;
 
      /**
       * Mark segment to be destroyed.
       */
      void unlink();
 
      /**
       * @return Return true if segment is marked to be destroyed.
       */
      bool isUnlinked() const;
 
      /**
       * @return Return true if segment should be destroyed. This means, segment
       * is unlinked and references count is zero.
       */
      bool shouldBeDestroyed() const;
    private:
      int refCount_;
      bool unlinked_;
  };
 
}
 
#endif // DEFAULT_REFCOUNTER_H