AtomicCounter.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_AtomicCounter_hxx
#define __ccxx_AtomicCounter_hxx

#include <commonc++/Common.h++>
#include <commonc++/Mutex.h++>

namespace ccxx {

class COMMONCPP_API AtomicCounter
{
 public:

  AtomicCounter(int32_t value = 0);

  ~AtomicCounter();

  AtomicCounter(const AtomicCounter& other);

  AtomicCounter& operator=(const AtomicCounter& other);

  int32_t operator++();

  int32_t operator++(int);

  int32_t operator--();

  int32_t operator--(int);

  int32_t operator+=(int32_t delta);

  int32_t operator-=(int32_t delta);

  int32_t operator+(int32_t delta) const;

  int32_t operator-(int32_t delta) const;

  int32_t operator=(int32_t value);

  int32_t set(int32_t value);

  int32_t swap(int32_t value);

  int32_t testAndSet(int32_t value, int32_t comparand);

  int32_t get() const;

  inline operator int32_t() const
  { return(get()); }

 private:

  mutable int32_t _atomic;
};

} // namespace ccxx

#endif // __ccxx_AtomicCounter_hxx