[pclasses-cvs] pclasses2/include/pclasses/System ThreadKey.h,NONE,1.1

[Christian P. <cp...@us...>]

Update of /cvsroot/pclasses/pclasses2/include/pclasses/System
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv14650/include/pclasses/System

Added Files:
	ThreadKey.h 
Log Message:
Added System::ThreadKey. Thread-local-storage pointer variable. 

--- NEW FILE: ThreadKey.h ---
/***************************************************************************
 *   Copyright (C) 2005 by Christian Prochnow                              *
 *   cp...@se...                                                   *
 *                                                                         *
 *   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 of the    *
 *   License, or (at your option) any later version.                       *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this program; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include <pclasses/NonCopyable.h>
#include <pclasses/System/SystemError.h>
 
#ifndef P_System_ThreadKey_h
#define P_System_ThreadKey_h

namespace P {

namespace System {

//! Thread-specific storage class
/*!
  This class should not be used directly, instead you
  should use the ThreadKey template class.
*/
class ThreadKeyImpl: public NonCopyable {
	public:
		ThreadKeyImpl() throw(SystemError);
		~ThreadKeyImpl();

		void set(void* ptr) throw();
		void* get() throw();

	private:
		unsigned long _handle;
};

//! Thread-specific storage template class
template <class Type>
class ThreadKey: private ThreadKeyImpl {
	public:
		inline ThreadKey() throw(SystemError)
		: ThreadKeyImpl() {}

		inline ThreadKey(const ThreadKey& k) throw(SystemError)
		: ThreadKeyImpl()
		{ set(k.get()); }

		inline ~ThreadKey() throw()
		{}

		inline ThreadKey& operator=(const ThreadKey& k) throw()
		{
			set(k.get());
			return *this;
		}

		inline ThreadKey& operator=(const Type* val) throw()
		{
			set(static_cast<void*>(val));
			return *this;
		}

		inline operator Type* () const throw()
		{ return (Type*)get(); }
};

} // !namespace System

} // !namespace P

#endif