wefts_specific.h

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/*
   wefts_specific.h
   Thread Specific Data object template

   $Id: wefts_specific.h,v 1.6 2004/03/28 21:45:40 jonnymind Exp $
---------------------------------------------
   Begin      : 2003-08-15 06:05
   Author     : Giancarlo Niccolai

   Last modified because:

*/

/**************************************************************************
*   This program 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 2.1 of the  *
*   License, or (at your option) any later version.                       *
***************************************************************************/

#ifndef WT_SPECIFIC_H
#define WT_SPECIFIC_H

#include <wefts_os.h>

namespace Wefts {

template< typename _T >
class ThreadPtr
{
private:
   OSSpecificData m_specific;

protected:
   _T &deref() throw( InvalidError )
   {
      void *dt = m_specific.data();
      if ( dt == 0 ) throw InvalidError();
      return *static_cast<_T *>(dt);
   }

public:
   ThreadPtr() {}
   ThreadPtr( _T *data ) { set(data); }
   ThreadPtr( ThreadPtr<_T> &src ) { set( src ); }

   _T *get() const { return static_cast<_T *>( m_specific.data() ); }

   ThreadPtr<_T > &set( ThreadPtr<_T > &src ){
      m_specific.data( static_cast< void *>(src.m_specific.data()));
      return *this;
   }

   _T *set( _T *data ) {
      m_specific.data( static_cast< const void *>(data));
      return data;
   }

   bool equal( const ThreadPtr<_T > &src ) const {
      return equal( src.m_specific.data() );
   }

   bool equal( const _T *data) const { return (m_specific.data() == data); }

   _T &operator*() { return deref(); }
   ThreadPtr<_T > &operator=( ThreadPtr<_T > &src ) { return set( src ); }
   _T *operator=( _T *data ) { return set(data); }

   bool operator ==( const ThreadPtr<_T > &src ) const {return equal( src );}
   bool operator ==( const _T *data ) const { return equal(data); }

   bool operator !=( const ThreadPtr<_T > &src ) const { return ! equal( src ); }
   bool operator !=( const _T *data ) const { return !equal(data); }
};

} // namespace
#endif

/* end of wefts_specific.h */

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