my_ref_counted.h

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/* Copyright (c) 2016, 2024, Oracle and/or its affiliates.
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
 
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the program or referenced in the documentation.
 
This program is distributed in the hope that it will be useful,
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
 
#ifndef MY_REF_COUNTED_H
#define MY_REF_COUNTED_H
 
#include <atomic>
 
#include "my_inttypes.h"
 
/**
  Helper class for reference counting.
*/
class my_ref_counted {
 public:
  my_ref_counted();
  my_ref_counted(my_ref_counted &other);
  virtual ~my_ref_counted();
  uint64 add_reference();
  bool release_reference(uint64 *new_count = nullptr);
  uint64 get_reference_count() const;
 
 private:
  /** the reference count value */
  std::atomic<uint64> m_count;
};
 
#endif /* MY_REF_COUNTED_H */