ThreadLocal.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_ThreadLocal_hxx
#define __ccxx_ThreadLocal_hxx

#include <commonc++/Common.h++>
#include <commonc++/NullPointerException.h++>
#include <commonc++/System.h++>
#include <commonc++/SystemException.h++>

#ifdef CCXX_OS_WINDOWS
#include <commonc++/Windows.h++>
#endif

#ifdef CCXX_OS_POSIX
#include <pthread.h>
#endif

namespace ccxx {

template <typename T> class ThreadLocal
{
 public:

  ThreadLocal();

  virtual ~ThreadLocal();

  T& operator*();

  T* operator->();

  void setValue(T* value);

  T* getValue();

  static int getSlotCount();

 protected:

  virtual T* initialValue();

 private:

#ifdef CCXX_OS_WINDOWS
  int _key;
#else
  pthread_key_t _key;
#endif

  static void keyDestructor(void* arg);

  CCXX_COPY_DECLS(ThreadLocal);
};

#include <commonc++/ThreadLocalImpl.h++>

} // namespace ccxx

#endif // __ccxx_ThreadLocal_hxx