TCMTLockable.h

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//*******************************************************************************
//
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// see http://sourceforge.net/projects/tcsystem/ for details.
// Copyright (C) 2003 - 2008 Thomas Goessler. All Rights Reserved. 
//*******************************************************************************
//
// TCSystem is the legal property of its developers.
// Please refer to the COPYRIGHT file distributed with this source distribution.
// 
// This library is free software; you can redistribute it and/or             
// modify it under the terms of the GNU Lesser General Public                
// License as published by the Free Software Foundation; either              
// version 2.1 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         
// Lesser General Public License for more details.                           
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// You should have received a copy of the GNU Lesser General Public          
// License along with this library; if not, write to the Free Software       
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
//*******************************************************************************
//  $Id: TCMTLockable.h 870 2008-07-21 14:15:33Z the_____tiger $
//*******************************************************************************

#ifndef _TC_MT_LOCKABLE_H_
#define _TC_MT_LOCKABLE_H_

#include "TCNonCopyable.h"
#include "TCMTFactory.h"

namespace TC
{
namespace MT
{
   template <class CLASS_TO_LOCK>
   class ObjectLevelLockable: protected NonCopyAble
   {
   public:
      ObjectLevelLockable()
      {
         m_mutex = Factory::CreateMutex();
      }
      ~ObjectLevelLockable()
      {
         m_mutex = MutexPtr();
      }

      bool Lock() const
      {
         return m_mutex->Lock();
      }

      bool UnLock() const
      {
         return m_mutex->UnLock();
      }

      typedef LockerPtr< const CLASS_TO_LOCK* > Locker;

   private:
      mutable MutexPtr m_mutex;
   };

   template <class CLASS_TO_LOCK>
   class ClassLevelLockable: protected NonCopyAble
   {
   public:
      class Locker: protected NonCopyAble
      {
      public:
         Locker()
         {
            m_mutex->Lock();
         }
         ~Locker()
         {
            m_mutex->UnLock();
         }
      };

      bool Lock()
      {
         return m_mutex->Lock();
      }

      bool UnLock()
      {
         return m_mutex->UnLock();
      }

   private:
      static MutexPtr m_mutex;

      friend class Locker;
   };

   template<class CLASS_TO_LOCK>
   MutexPtr ClassLevelLockable<CLASS_TO_LOCK>::m_mutex = Factory::CreateMutex();

} // namespace MT
} // namespace TC

#endif // _TC_MT_LOCKABLE_H_